Dial or half-dial for single-cylinder circular hosiery knitting machines, particularly for producing tubular items closed at one longitudinal end

Description

[0001] The present invention relates to a dial or half-dial for single-cylinder circular hosiery knitting machines, particularly for producing tubular items closed at one longitudinal end.

[0002] It is known that some types of single-cylinder circular hosiery knitting machines, in order to perform particular types of knitting, are equipped with a dial which is arranged above the needle cylinder and coaxially thereto. The dial of these machines generally has a substantially disk-like body, on the upper face whereof there is a plurality of radial slots, each accommodating a hook which can be actuated along the corresponding radial slot in order to cooperate, thanks to its hooked end that protrudes from the dial body, with the needles in manufacturing the items.

[0003] A cover for closing the radial slots in an upward region and therefore retain the hooks inside the corresponding radial slots, is generally arranged above the dial body. Furthermore, the hook actuation cams are associated with the cover of the dial. Said cams form paths which can be engaged by the heels of the hooks, which protrude upwards from the radial slots, so as to produce the movement of the hooks, inside the corresponding radial slots of the dial body, towards or away from the axis of the dial in order to perform the various kinds of knitting.

[0004] The cover as an element for closing the radial slots in an upward region, in addition to significantly increasing the mass of the dial as a whole and considerably affecting production and assembly costs, causes problems during maintenance of the dial or hooks.

[0005] In these situations it is in fact often necessary to fully remove the dial from the machine and disassemble the cover in order to be able to access the hooks located in the radial slots of the dial body.

[0006] These problems are even greater in the case of single-cylinder circular hosiery knitting machines which can close a longitudinal end of the tubular knitted item during its production.

[0007] These machines are in fact generally provided with a half-dial which is located above the needle cylinder of the machine so as to overlap one half of the needle cylinder and can be turned over, substantially through an angle of 180°, about a diametrical axis of the needle cylinder in order to face one half of the needle cylinder or the other half of the needle cylinder. Inside the overturning half-dial there is a plurality of radial slots or twin radial slots, in each of which two or more hooks with mutually opposite hooked ends are arranged. The hooks of each slot or twin slot can be actuated individually in order to engage the loops formed by the needles of one half of the needle cylinder and to retain them inside the hooked ends during the overturning of the half-dial about the diametrical axis. After overturning, the hooks are actuated again so as to release the previously retained loops, which are engaged by the needles of the other half of the needle cylinder.

[0008] After transferring the loops formed by one half of the needle cylinder to the needles of the other half of the needle cylinder, one longitudinal end of the tubular item produced by the circular hosiery knitting machine is closed.

[0009] The hooks used in these machines are generally provided with a heel which protrudes upwards from the half-dial body and with a heel which protrudes downwards from the half-dial. Because of this, on the bottom of the radial slots there is an adapted slit for the passage of the heel which must protrude downwards from the half-dial.

[0010] Above the half-dial there are also cams which determine paths for said heels, so as to produce the coordinated movement of the hooks in a radial direction with respect to the axis of the needle cylinder in order to engage or release the loops of knitting.

[0011] When the half-dial is turned over about the diametrical axis, the hooks engage said cams by means of the heel which, in the non-overturned position, protruded downwards from the dial.

[0012] In these kinds of machine the cover on the half-dial, which is required in order to retain the hooks inside the corresponding radial slots of the half-dial, causes additional problems, since it significantly increases the mass of an element which must be overturned and increases the complexity of the production and assembly of the half-dial, and interventions on the hooks in case of maintenance are even more difficult indeed because it is necessary to disassemble the cover arranged on the half-dial.

[0013] US-A-3 609 998 and EP-A-0 814 186 disclose respectively a circular knitting machine with pivotable half dial and a hook for single-cylinder circular knitting machine with cylinder and circular or semicircular plate.

[0014] The aim of the present invention is to solve the above problems by providing a dial or half-dial for single-cylinder circular hosiery knitting machines, particularly for machines producing tubular items closed at one longitudinal end, whose structure is considerably simpler than conventional dials or half-dials, so as to be easy to manufacture and assemble.

[0015] Within this aim, an object of the invention is to provide a dial or half-dial which makes hook maintenance particularly simple and easy.

[0016] Another object of the invention is to provide a dial or half-dial which can ensure high precision both in loading the loops of knitting and in releasing them during the operation of the machine.

[0017] Another object of the invention is to provide a dial or half-dial in which the cams for actuating the hooks are structurally simple.

[0018] Another object of the invention is to provide a dial for single-cylinder circular machines which can be used to transfer the loops of knitting from one half of the needle cylinder to the other half of the needle cylinder or to perform knitting which requires the simultaneous use of the needles of the needle cylinder and of the hooks of the dial, such as for example the formation of double-thickness regions such as the top of socks.

[0019] This aim, these objects and others which will become apparent hereinafter are achieved by a dial or half-dial and hook assembly for single-cylinder circular hosiery knitting machines, particularly for producing tubular items closed at one longitudinal end, comprising a dial or half-dial body which is substantially shaped like a disk or half-disk and is provided, on at least one of two opposite faces thereof, with a plurality of radial slots, each of which slideably accommodates at least one hook, characterized in that the hooks have a longitudinal slit which is open in the direction of an axis of said dial or half-dial body, said slit giving a portion of the body of said hooks a bifurcated shape which engages the two opposite faces of said dial or half-dial body.

[0020] Further characteristics and advantages of the invention will become apparent from the description of a preferred but not exclusive embodiment of the dial or half-dial according to the invention, illustrated only by way of non-limitative example in the accompanying drawings, wherein:

Figure 1 is a schematic sectional view of a dial according to the invention, taken along a radial plane;

Figure 2 is a top plan view of the body of a half-dial according to the invention;

Figure 3 is a schematic top plan view of the cams for actuating the hooks of the dial according to the invention, showing only part of the hooks;

Figure 4 is an enlarged-scale perspective view of a first hook of the dial according to the invention;

Figure 5 is an enlarged-scale perspective view of a second hook of the dial according to the invention;

Figures 6 to 16 are schematic sectional views, taken along a radial plane, of an overturning portion of the dial in various operating conditions of the hooks.

[0021] For the sake of simplicity in description, the invention is now described with reference to the accompanying Figures, which relate to a dial 1 provided with a portion or half-dial 2 which can be overturned about a diametrical axis 3 with respect to the remaining non-overturning portion 4; however, the concept of the invention can also be applied to dials which do not have overturning portions and to half-dials even without the portion 4. The dial 1, shown in the Figures, is a dial meant to be fitted to a single-cylinder circular hosiery knitting machine capable of producing tubular items which are closed at one of their axial ends and double-thickness knitting or tubular edges, such as for example the top of stocks.

[0022] With reference to the above Figures, the portion or half-dial 2, hereinafter referenced simply as half-dial, comprises a half-dial body 5 which is substantially shaped like a half-disk which has, on at least one of its two faces, a plurality of radial slots 6, each of which slideably accommodates at least one hook. According to the invention, the hooks have a longitudinal slit 7 which is open in the direction of the axis 8 of an imaginary disk-like body of which the body 5 constitutes substantially one half, i.e., the axis 8 of the dial 1 for the illustrated embodiment, and said slit 7 gives a portion of the body of the hooks a bifurcated shape which engages the two opposite faces of the body 5 of the half-dial.

[0023] Preferably, the body 5 of the half-dial has radial slots 6a in its upper face and radial slots 6b in its lower face. The longitudinal slit 7 formed in the body of the hooks is delimited by two mutually opposite sides 9a and 9b which are substantially mutually parallel and slideably engage respectively the bottom of the corresponding radial slot 6a formed in the upper face of the body 5 of the half-dial and the bottom of the corresponding radial slot 6b formed in the lower face of the half-dial body 5.

[0024] In the illustrated embodiment there are, for each radial slot 6 or slots 6a, 6b of the half-dial 2, respectively a first hook 15 and a second hook 16 which are arranged mutually side by side inside a same radial slot 6 or slots 6a, 6b.

[0025] More particularly, the first hook 15 has a laminar body which is arranged on a radial plane of the body 5 of the half-dial 2. One longitudinal end 17 of the first hook 15 is hook shaped, with a point which is directed upwards when the hook 15 is coupled to the body 5 of the half-dial 2 in the non-overturned position. At the opposite longitudinal end there is the inlet of the longitudinal slit 7 which, as mentioned, is meant to be engaged by the body 5 of the half-dial 2.

[0026] An upper heel 18 protrudes from the upper side of the body of the first hook 15, in an intermediate region of the longitudinal extension of the hook 15, and a second heel 19 protrudes from the lower side of the first hook 15. The heels 18 and 19 are substantially mutually aligned and protrude at right angles to the longitudinal extension of the hook 15, i.e., parallel to the axis 8.

[0027] The heels 18 and 19 also have a step-like shape on their side directed toward the hooked end 17.

[0028] The second hook 16 also has a laminar body which is meant to be arranged on a radial plane inside the corresponding radial slot 6 or slots 6a, 6b of the body 5 of the half-dial 2.

[0029] The second hook 16 also has a hooked longitudinal end 20 which has a point which is directed downwards when the hook 16 is coupled to the body 5 of the half-dial 2 in the non-overturned position. In practice, the second hook 16 is arranged inside the corresponding radial slot 6 or slots 6a, 6b of the dial that lies laterally adjacent to the first hook 15, so that its hooked end 20 lies opposite the hooked end 17 of the first hook, as will become apparent hereinafter.

[0030] The body of the second hook 16, starting from the longitudinal end that lies opposite the hooked end 20, also is provided with the slit 7, which can be engaged by the body 5 of the half-dial 2.

[0031] A heel 21 protrudes from the upper side of the second hook 16 in an intermediate region of the longitudinal extension of the hook 16, and a lower heel 22 protrudes from the lower side of the second hook 16.

[0032] In the second hook 16 also, the heels 21 and 22 are substantially mutually aligned and lie substantially at right angles to the longitudinal extension of the hook 16, i.e., parallel to the axis 8.

[0033] In this case there is a step-like region on the side of the heels 21 and 22 that is directed away from the hooked end 20 of the hook 16.

[0034] The heels 21 and 22 of the second hook 16 are arranged along the longitudinal extension of the body of the second hook 16, with respect to the arrangement of the heels 18 and 19 of the first hook 15, so that when the first hook and the second hook are placed inside a same radial slot 6 or slots 6a, 6b of the half-dial 2 they laterally overlap at least partially.

[0035] In the second hook 16, at least the portion 23 that is arranged proximale to the hooked end 20 can flex elastically toward or away from the first hook 15 arranged inside the same radial slot 6 or slots 6a, 6b of the half-dial 2.

[0036] When no forces are acting on it, the flexible portion 23 has a concave shape on the side of the second hook 16 that is meant to face the first hook 15.

[0037] Moreover, in order to facilitate the elastic flexibility of the portion 23, such portion 23 is conveniently thinner than the remaining part of the body of the second hook 16.

[0038] The first hook 15 has, on the side of the hooked end 17 that is meant to face the second hook 16, a recess 24 for receiving the hooked end 20 of the second hook 16 when it flexes toward the first hook 15.

[0039] The heels of the hooks 15 and 16 can be engaged by actuation means which are constituted by cams facing the half-dial in an upward region.

[0040] The cams form, for the heels of the first hook 15 and of the second hook 16, paths which move the hooks 15 and 16 in a radial direction with respect to the body 5 of the half-dial 2.

[0041] More particularly, as shown in particular in Figure 3, there is a retraction cam 30 which has a profile 30a which is inclined with respect to a radial plane that passes through the axis 8 and can engage the heels of the hooks 15 and 16 so as to move them toward the axis 8 along the corresponding radial slot 6 or slots 6a, 6b.

[0042] The actuation cams comprise an extraction cam 31 which has a profile 31a which is inclined, with respect to a radial plane that passes through the axis 8, in the opposite direction with respect to the inclination of the profile 30a of the cam 30, and can engage the heels of the hooks 15 and 16 in order to cause their movement, inside the corresponding slot 6 or slots 6a, 6b, in the opposite direction with respect to the axis 8.

[0043] The actuation means further comprise two mutually facing cams 32 and 33 which form, between them, a passage 34 which can be engaged by the heels of the hooks 15 and 16 in order to produce a limited movement of the hooks 15 and 16 toward the axis 8.

[0044] The actuation means also comprise an annular cam 36 which runs around the axis 8 and delimits the movement of the hooks 15 and 16 in the opposite direction with respect to the axis 8. The annular cam 36 has, in the region of the extraction cam 31, a recess to allow the movement, imparted by the extraction cam 31, of the hooks 15 and 16 in the opposite direction with respect to the axis 8.

[0045] It should be noted that the cams 30, 31, 32 and 33 can move on command parallel to the axis of the needle cylinder, which coincides with the axis 8, for example by means of pneumatic, mechanical or electromechanical actuators, so that they can be moved from an active position, in which they interfere with the heels of the hooks 15 and 16, to an inactive position, in which they do not interfere with the heels of the hooks, while the cam 36 is fixed and is therefore always in a position which is adapted to interfere with the heels of the hooks 15 and 16.

[0046] The upper heels of the hooks 15 and 16 and the lower heels of the hooks 15 and 16 can selectively engage the cams that constitute the actuation means, depending on whether the half-dial 2 is overturned, as shown in Figure 1, or not about the diametrical axis 3.

[0047] In at least some of the hook actuation cams, the profile that is to be engaged by the heels of the hooks 15 and 16 is step-shaped so as to simultaneously or separately actuate the hooks along the corresponding radial slot 6 or slots 6a, 6b of the half-dial 2.

[0048] The hook actuation cams are mounted on a support 40 which is supported by the load-bearing structure of the machine independently of the half-dial 2.

[0049] The non-overturning portion 4 also has a substantially semicircular body and is rigidly associated or associable with the needle cylinder in rotating about the axis 8. The portion 4, according to the requirements, can be provided with radial slots only on its upper face and be equipped with conventional hooks, as shown in Figure 1, provided with heels which protrude upwards from the portion 4 and are adapted to be actuated by the cams 30, 31, 32, 33 and 36, or can be provided substantially like the half-dial 2 and be equipped with hooks similar to the hooks 15, i.e., with a hooked longitudinal end in which the point is directed upwards. In this case, the hooks fitted to the non-overturning portion 4 may be provided without the lower heels.

[0050] Conveniently, means are provided which are adapted to contrast or at least limit the elastic flexing of the hooks 15 and 16 in their plane of arrangement, i.e., in planes arranged radially with respect to the body 5 of the dial or half-dial 2, particularly when said hooks 15 and 16 are in the maximum extraction position with respect to the body 5 of the dial or half dial 2 and are subjected to the action of the stitch engaged by said hooks 15 and 16.

[0051] Said means adapted to contrast or limit the elastic flexing of the hooks 15 and 16 comprise at least one cover 50 which is fixed to at least one face of the body 5 of the dial or half-dial 2 and closes the side of the radial slots 6a and 6b that lies opposite the bottom of said slots 6a and 6b at least in the region occupied by the portion of the hooks 15 and 16 that protrudes from the heels 18, 19, 21, 22 toward the axis 8. In the illustrated embodiment there is a cover 50 on each one of the two faces of the body 5 of the dial or half-dial 2.

[0052] For the sake of completeness in description, it is noted that an annular blade 41 is fixed to the portion 4, is coaxial to the dial 1 and cooperates with a cutter 42 arranged above the dial 1 for cutting the threads.

[0053] The half-dial 2 can be overturned, as described in EP 0 803 599 A1, by means of a pinion 43 which is fixed to the half-dial, has an axis which coincides with the axis 3 and meshes, either directly or with an additional pinion 44 interposed, with a rack 45 which is parallel to the axis 8 and can be actuated on command parallel to said axis 8.

[0054] The operation of the dial or half-dial according to the invention is as follows.

[0055] In producing a tubular item which is closed at one of its longitudinal ends, for example according to the method disclosed in EP 0 756 029 A1, the hooks 15 and 16 are subjected to the action of the cam 31 in the working position, which causes their movement in the opposite direction with respect to the axis 8, making them protrude, with their hooked end, from the half-dial 2. The cam 31 simultaneously makes contact with the side of the upper heel 18 that is directed toward the axis 8 and the lower part of the step of the upper heel 21, causing the upper heels of the two hooks 15 and 16 to laterally overlap perfectly. In this condition, the hooked end 20 of the second hook 16 is arranged laterally adjacent to the hooked end 17 of the first hook 15. The portion 23 of the second hook 16, being extracted from the corresponding radial slot 6 or slots 6a, 6b of the dial 2, is laterally spaced from the first hook 15 (Figure 6).

[0056] The heels 18 and 21 then engage, with their side directed toward the hooked end 17 and 20, a step-shaped portion of the profile 36a of the cam 36 while they transit at a portion of the profile 31a of the cam 31 which is also step-shaped. As a consequence of this fact, the hooks 15 and 16 are moved in the direction of the axis 8 but the second hook 16 moves more than the first hook 15. Because of this, the hooked end 20 of the second hook 16 is moved backward with respect to the hooked end 17 of the first hook 15 (Figure 7). In this position, the hooked end 17 of the first hook 15 can receive the thread between the loops formed by the needles of one half of the needle cylinder, i.e., the half of the needle cylinder that lies below the overturning half-dial 2.

[0057] After the descent of the needles in order to form the loops of knitting, the upper heels of the hooks 15 and 16 transit through the passage 34 between the cams 32 and 33, being moved into the working position (Figure 8). Owing to the fact that the cam 33 engages the side of the heels that is directed away from the axis 8 at the lower part of the step of the heel 18 and the cam 32 engages the opposite side of the heels in the lower region of the step of the heel 21, the two hooks 15 and 16 are moved so as to partially retract into the corresponding slot 6 or slots 6a, 6b, but the hook 16 is retracted slightly less than the hook 15. The portion 23 of the second hook 16 engages the side of the corresponding slot 6 or slots 6a, 6b, and starts to flex toward the first hook 15, resting with its hooked end 20 in the recess 24.

[0058] The heels of the hooks 15 and 16 then engage the profile 30a of the cam 30, which is moved into the working position, causing a further retraction of the hooks 15 and 16 into the slots 6. As a consequence of this fact, the portion 23 of the hook 16, by sliding along the side of the corresponding slot 6 or slots 6a, 6b, flexes further toward the hook 15 with its point in the recess 24 (Figure 9). In these conditions, the loops of knitting are firmly retained between the hooked ends 17 and 20 of the hooks 15 and 16.

[0059] The half-dial 2 is then overturned about the diametrical axis 3 and, by means of a partial rotation of said half-dial 2 with respect to the portion 4 about the axis 8, as described in EP 0 803 599 A1, it is arranged laterally adjacent and overturned with respect to the portion 4, as shown in Figure 1.

[0060] At this point, the lower heels 19 and 22 of the hooks 15 and 16 engage the cam 31 in the working position and said cam again moves the hooks away from the axis 8 (Figure 10), thus also spacing the portion 23 of the second hook 16 from the side of the first hook 15, so that a needle of the cylinder can enter the space between the hooks 15 and 16.

[0061] Then the heels 19 and 22 of the hooks 15 and 16 pass between the cam 31 and the profile 36a of the annular cam 36 in step-shaped regions which cause the movement of the hooks 15 and 16 toward the axis 8. In this case the hook 16 is moved toward the axis 8 more than the hook 15 (Figure 11); the hooked end 20 of the second hook 16 is thus retracted with respect to the hooked end 17 of the first hook 15.

[0062] In this manner, the loop of knitting is transferred to the needle of the needle cylinder inserted previously between the hooks 15 and 16.

[0063] The heels 19 and 22 of the hooks 15 and 16 then engage the cam 30, in the working position, causing the retraction of the hooks 15 and 16 into the slots 6 or 6a, 6b and preparing the half-dial 2 for subsequent overturning about the axis 3 (Figure 12).

[0064] The machine then continues to knit the item in a per se known manner.

[0065] If the half-dial 2 is used together with the portion 4 as a conventional half-dial, in order to engage the loops formed by the needles of the needle cylinder the hooks 15 and 16 are moved toward the outside of the half-dial, i.e., away from the axis 8, by using the cam 31 and then toward the axis 8 by using the cam 36 (Figures 13 and 14). It should be noted that in the position shown in Figure 14 the hooked end of the hook 16 is slightly retracted with respect to the hooked end 17 of the hook 15 and therefore does not hinder the engagement of the thread by the hook 15.

[0066] The upper heels of the hooks 15 and 16 then pass through the passage 34 of the cams 32 and 33, in the working position; said cams cause the movement of the hooks 15 and 16 toward the axis 8 with an elastic flexing of the portion 23 of the second hook 16 toward the first hook 15. The hooked end of the second hook 16 engages the recess 24 of the hooked end 17 of the first hook 15 and the thread engaged by the hooks 15 is firmly locked on them by the hooks 16 which move, with their hooked end 20, toward the hooked end 17 of the hooks 15, closing it (Figure 15).

[0067] The subsequent release of the loops of the knitting is performed by way of the retraction of the hooks 15 and 16 into the corresponding slot 6 or slots 6a, 6b, which is performed by the cam 30, which is moved into the working position (Figure 16).

[0068] It should be noted that in this position also, like the position shown in Figure 14, the hooked end of the second hook 16 is retracted with respect to the hooked end 17 of the first hook 15 and therefore does not hinder at all the release of the loop of knitting, thus obtaining, for the hook 15, the same behavior as a conventional single hook.

[0069] If it is necessary to replace the hooks it is sufficient to lower the dial or half-dial according to the invention with respect to the cam support 40. In this position, the hooks can be easily extracted from the radial slots in which they are inserted.

[0070] It should be noted that during the overturning of the half-dial 2 about the diametrical axis 3 the hooks 15 and 16 are retained in the radial slots 6 by the friction between said hooks 15 and 16 and the slots. The friction can optionally be increased by providing lateral folds in the laminar body of the hooks, in a per se known manner.

[0071] In practice it has been observed that the dial or half-dial according to the invention fully achieves the intended aim, since it is considerably simpler, from a structural point of view, than conventional dials or half-dials and is therefore simpler to manufacture and assemble and furthermore makes hook maintenance particularly easy and simple.

[0072] Although the present invention has been conceived particularly for a dial with an overturning portion or for a half-dial meant to be installed in circular hosiery knitting machines for manufacturing tubular items closed at one longitudinal end, it can also be used advantageously for dials which do not have an overturning portion. In this case, the dial can be entirely executed like the half-dial 2 and the radial slots 6 or 6a, 6b optionally accommodate a single hook, provided only with the upper heel.

[0073] The dial or half-dial thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may furthermore be replaced with other technically equivalent elements.

[0074] In practice, the materials used, as well as the dimensions, may be any according to requirements and the state of the art.

Claims

1. A dial (1) or half-dial (2) and hook assembly for single-cylinder circular hosiery knitting machines, for producing tubular items closed at one longitudinal end, comprising a dial or half-dial body (5) which is substantially shaped like a disk or half-disk and is provided, on at least one of two opposite faces thereof, with a plurality of radial slots (6), each of which slideably accommodates at least one hook (15, 16), characterized in that the hooks have a longitudinal slit (7) which is open in the direction of the axis of said dial or half-dial body (5), said slit (7) giving a portion of the body of said hooks a bifurcated shape which engages the two opposite faces of said dial or half-dial body (5).

2. The dial or half-dial and hook assembly according to claim 1, characterized in that said body (5) of the dial or half-dial has radial slots (6a, 6b) on both of its faces, the two mutually opposite parallel sides of said longitudinal slit (7) slideably engaging the bottom of the corresponding radial slots (6a, 6b) formed in the two faces of the dial or half-dial body (5).

3. The dial or half-dial and hook assembly according to claim 1, characterized in that each one of said hooks (15, 16) has a laminar body which is arranged on a radial plane (5) of the dial or half-dial body and in which the opposite end (17) with respect to the axis of said dial or half-dial body is hook shaped and has at least one heel (18, 19) which protrudes, in an intermediate region of the extension of the body of the hook (15), so as to be parallel to the axis of said dial or half-dial body, said heel protruding from one of the two faces of said dial or half-dial body and being engageable by actuation means (30, 31, 32, 33, 36) which face one face of said dial or half-dial body for the movement of said hook in a radial direction with respect to the body of the dial or half-dial.

4. The dial or half-dial and hook assembly according to claim 1, characterized in that each one of said hooks (15, 16) is provided with a first heel (18) which protrudes from one face of the dial or half-dial body and with a second heel (19) which protrudes from the opposite face of the dial or half-dial body, said heels being engageable by actuation means which face one face of said dial or half-dial body for the movement of said hook in a radial direction with respect to the dial or half-dial body (5).

5. The dial or half-dial and hook assembly according to claim 1, characterized in that each one of said slots (6, 6a, 6b) accommodates two hooks, respectively a first hook (15) and a second hook (16), which lie mutually side by side and in which ends that are directed away from the axis of said body of the dial or half-dial are hook shaped and mutually opposite, at least the portion (23) of said second hook (16) that is proximate to the hooked end (20) being flexible toward or away from said first hook (15), one side of said radial slots forming a lateral support for said flexible portion (23) of said second hook for its flexing toward the first hook (15) following the movement of said second hook (16) toward the axis of said dial or half-dial body (5) thanks to the action of said actuation means (30, 31, 32, 33, 36).

6. The dial or half-dial and hook assembly, according to claim 5, characterized in that the flexible portion (23) of said second hook (16) is thinner than a remaining part of said second hook (16).

7. The dial or half-dial and hook assembly, according to claim 5, characterized in that the point of the hooked end (17) of said first hook (15) has, on its side directed toward said second hook (16), a recess (24) for accommodating the point of the hooked end (20) of said second hook (16) following the elastic flexing of said flexible portion of said second hook toward said first hook.

8. The dial or half-dial and hook assembly according to claim 5, characterized in that if there are no forces acting on said flexible portion (23) of said second hook (16), it has an arc-like shape in which the concavity is directed toward one side of said first hook (15).

9. The dial or half-dial and hook assembly according to claim 1, characterized in that a portion of the body of the dial or the body (5) of the half-dial can be overturned about a diametrical axis of the dial or half-dial.

10. The dial or half-dial and hook assembly according to claim 3, characterized in that said actuation means comprise actuation cams (30-33, 36) which face one face of said dial or half-dial body and form paths which can be engaged by the heels of said hooks (15, 16), said paths being shaped so as to produce a movement of said hooks in a radial direction of the dial or half-dial body (5).

11. The dial or half-dial and hook assembly according to claim 10, characterized in that an upper heel and a lower heel of said hooks (15, 16) can selectively engage said cams following the overturning of said portion of the dial or half-dial body (5) about said diametrical axis.

12. The dial or half-dial and hook assembly according to claim 10, characterized in that the heels of the pair of hooks (15, 16) arranged in a same radial slot of the dial or half-dial body (5) are arranged side by side and partially overlap laterally, the heels (18, 19, 21, 22) of said first hook (15) and of said second hook (16) having regions which extend differently in a radial direction of the dial or half-dial body (5) with respect to corresponding regions of the heels of the second hook (16) for a different movement, along the corresponding radial slot, of said first hook with respect to said second hook.

13. The dial or half-dial and hook assembly according to claim 12, characterized in that the heels (18, 19) of said first hook (15) have a step-shaped region on their side that is directed toward the hooked end (17) of the first hook (15) and in that the heels (21, 22) of said second hook have a step-shaped region on their side that is directed toward the end that lies opposite with respect to the hooked end (20) of the second hook (16).

14. The dial or half-dial and hook assembly according to claim 12, characterized in that in at least some of said actuation cams (30, 31, 32, 33) the profile that can be engaged by one of the two sides of the heels of the hooks (15, 16) is step-shaped so as to match the shape of the side of the heel of the hooks.

15. The dial or half-dial and hook assembly according to claim 5, characterized in that it comprises means (50) adapted to contrast or limit the elastic flexing of said hooks (15, 16) in a corresponding plane of arrangement that lies radially with respect to the body (5) of the dial or half-dial.

16. The dial or half-dial and hook assembly according to claim 15, characterized in that said means adapted to contrast or limit the elastic flexing of said hooks comprise at least one cover (50) which is applied to at least one of the two opposite faces of the body (5) of the dial or half-dial, said at least one cover closing at least the side of said radial slots (6a, 6b) that lies opposite the bottom in the region occupied by the portion of said hooks (15, 16) that protrudes from said heels (15, 16) toward the axis (8) of said dial.

17. A hook (15) for single-cylinder circular hosiery knitting machines, comprising a laminar body which has a hooked end (17), characterized in that it has a longitudinal slit (7) which is open at the end that lies opposite with respect to said hooked end, said slit giving a portion of the body of the hook a bifurcated shape, suitable to engage two opposite faces of the body dial or half-dial of a knitting machine.

18. The hook according to claim 17, characterized in that said longitudinal slit (7) is delimited by two mutually parallel opposite sides.

19. The hook according to claim 18, characterized in that at least the portion (23) of said hook body that lies proximate to the hooked end (17) is laterally flexible.

20. The hook according to claim 17, characterized in that said flexible portion (23) is thinner than the remaining part of the hook body.

21. The hook according to claim 20, characterized in that if no forces act on said flexible portion (23), said flexible portion is arc-shaped and concave on one side of the hook.

22. The hook according to claim 17, characterized in that the point of said hooked end (17) has, on one side of the hook, a recess (24) for accommodating the point of the hooked end of a contiguous hook.

23. The hook according to claim 17, characterized in that the body of the hook is provided with a first heel, which protrudes transversely and is meant to protrude from an upper face of the body of the dial or half-dial that is meant to receive the hook, and with a second heel, which protrudes transversely from the side of the body of the hook that lies opposite with respect to the one that supports said first heel and is meant to protrude from the opposite face of the dial or half-dial body.

Ansprüche

1. Teller- (1) oder Halbteller- (2) und Hakenanordnung für Monozylinder-Strumpfrundstrickmaschinen zum Erzeugen schlauchförmiger Artikel, die an einem longitudinalen Ende geschlossen sind, mit einem Teller- oder Halbtellerkörper (5), der im Wesentlichen wie eine Scheibe oder Halbscheibe geformt ist und an zumindest einer von zwei gegenüberliegenden Flächen desselben mit einer Vielzahl radialer Einschnitte (6) versehen ist, von denen jeder zumindest einen Haken (15, 16) gleitbar aufnimmt, dadurch gekennzeichnet, dass die Haken einen longitudinalen Schlitz (7) aufweisen, der in die Richtung der Achse des Teller- oder Halbtellerkörpers (5) offen ist, wobei der Schlitz (7) einem Abschnitt des Körpers der Haken eine gabelartige Form verleiht, die mit den beiden gegenüberliegenden Flächen des Teller- oder Halbtellerkörpers (5) im Eingriff ist.

2. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass der Körper (5) des Tellers oder Halbtellers radiale Einschnitte (6a, 6b) auf beiden Seiten seiner Flächen aufweist, und dass die zwei zueinander gegenüberliegenden parallelen Seiten des longitudinalen Schlitzes (7) gleitbar mit dem Boden des entsprechenden radialen Einschnitte (6a, 6b) im Eingriff ist, die in den zwei Flächen des Teller- oder Halbtellerkörpers (5) ausgebildet sind.

3. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass jeder der Haken (15, 16) einen flächigen Körper aufweist, der in einer Radialebene (5) des Teller- oder Halbtellerkörpers angeordnet ist, und bei dem das gegenüberliegende Ende (17) in Bezug auf die Achse des Teller- oder Halbtellerkörpers hakenförmig ausgebildet ist und der zumindest einen Absatz (18, 19) aufweist, der in einem mittleren Bereich der Erstreckung des Körpers des Hakens (15) hervorsteht, um parallel zu der Achse des Teller- oder Halbtellerkörpers zu sein, wobei der Absatz von einer der beiden Flächen des Teller- oder Halbtellerkörpers hervorsteht und durch Betätigungseinrichtungen (30, 31, 32, 33, 36), die einer Fläche des Teller- oder Halbtellerkörpers zugewandt sind, für die Bewegung der Haken in einer Radialrichtung in Bezug auf den Körper des Tellers oder Halbtellers eingreifbar ist.

4. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass jeder der Haken (15, 16) mit einem ersten Absatz (18), der von einer Fläche des Teller- oder Halbtellerkörpers hervorsteht, und mit einem zweiten Absatz (19) versehen ist, der von der gegenüberliegenden Fläche des Teller- oder Halbtellerkörpers hervorsteht, wobei die Absätze durch die Betätigungseinrichtungen, die einer Fläche des Tellers- oder Halbtellerkörpers zugewandt sind, für die Bewegung der Haken in eine Radialrichtung in Bezug auf den Teller- oder Halbtellerkörper (5) eingreifbar sind.

5. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass jeder der Einschnitte (6, 6a, 6b) zwei Haken aufnimmt, einen ersten Haken (15) bzw. einen zweiten Haken (16), die seitlich zueinander liegen und an deren Enden, die von der Achse des Körpers des Tellers oder Halbtellers fortgerichtet sind, hakenförmig ausgebildet sind und zueinander gegenüberliegend sind, wobei zumindest der Abschnitt (23) des zweiten Hakens (16), der sich nahe zu dem hakenförmigen Ende (20) befindet, flexibel zu oder fort von dem ersten Haken (15) ausgebildet ist, wobei eine Seite der radialen Einschnitte einen lateralen Träger für den flexiblen Bereich (23) des zweiten Hakens für seine Biegung zu dem ersten Haken (15) hin bildet, welche auf die Bewegung des zweiten Hakens (16) zu der Achse des Tellers- oder Halbtellerkörpers (5) Dank der Wirkung der Betätigungseinrichtungen (30, 31, 32, 33, 36) folgt.

6. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 5, dadurch gekennzeichnet, dass der flexible Abschnitt (23) des zweiten Hakens (16) dünner als der übrige Teil des zweiten Hakens (16) ist.

7. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 5, dadurch gekennzeichnet, dass die Stelle des hakenförmigen Endes (17) des ersten Hakens (15) auf seiner Seite, die dem zweiten Haken (16) zugerichtet ist, eine Aussparung (24) zum Aufnehmen der Stelle des hakenförmigen Endes (20) des zweiten Hakens (16) aufweist, das dem elastischen Biegen des flexiblen Bereiches des zweiten Hakens zu dem ersten Haken folgt.

8. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 5, dadurch gekennzeichnet, dass wenn keine Kräfte auf dem flexiblen Abschnitt (23) des zweiten Hakens (16) einwirken, dieser eine bogenförmige Form aufweist, in der die Konkavität zu einer Seite des ersten Hakens (15) gerichtet ist.

9. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass ein Abschnitt des Körpers des Tellers oder des Körpers (5) des Halbtellers um eine diametrische Achse des Tellers oder Halbtellers umgekippt werden kann.

10. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 3, dadurch gekennzeichnet, dass die Betätigungseinrichtungen Betätigungsexzenter (30 bis 33, 36) aufweisen, die einer Fläche des Tellers oder Halbtellerkörpers zugewandt sind und Wege bilden, in die die Absätze der Haken (15, 16) in Eingriff kommen können, wobei die Wege geformt sind, eine Bewegung der Haken in eine Radialrichtung des Tellers oder Halbtellerkörpers (5) zu erzeugen.

11. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 10, dadurch gekennzeichnet, dass ein oberer Absatz und ein unterer Absatz der Haken (15, 16) selektiv mit den Exzentern in Eingriff kommen können, das dem Umkippen des Abschnitts des Tellers oder Halbtellerkörpers (5) um die diametrische Achse folgt.

12. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 10, dadurch gekennzeichnet, dass die Absätze des Paares der Haken (15, 16), die in einem selben radialen Einschnitt des Tellers oder Halbtellerkörpers (5) angeordnet sind, Seite an Seite und teilweise lateral überlappend angeordnet sind, wobei die Absätze (18, 19, 21, 22) des ersten Hakens (15) und des zweiten Hakens (16) Bereiche aufweisen, die sich in einer Radialrichtung des Teller- oder Halbtellerkörpers (5) in Bezug auf die entsprechenden Bereiche der Absätze des zweiten Hakens (16) für eine unterschiedliche Bewegung entlang der entsprechenden Radialeinschnitte des ersten Hakens in Bezug auf den zweiten Haken unterschiedlich erstrecken.

13. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 12, dadurch gekennzeichnet, dass die Absätze (18, 19) der ersten Hakens (15) einen stufenförmigen Bereich auf ihrer Seite aufweisen, die zu dem hakenförmigen Ende (17) des ersten Hakens (15) gerichtet ist, und dass die Absätze (21, 22) des zweiten Hakens einen stufenförmigen Bereich auf ihrer Seite aufweisen, die dem Ende zugerichtet ist, das in Bezug auf das hakenförmige Ende (20) des zweiten Hakens (16) gegenüberliegt.

14. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 12, dadurch gekennzeichnet, dass bei zumindest einigen der Betätigungsexzenter (30, 31, 32, 33) das Profil stufenförmig ausgebildet ist, das mit einem der zwei Seiten der Absätze der Haken (15, 16) in Eingriff kommen kann, um zu der Form der Seite der Absätze der Haken zu passen.

15. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 5, dadurch gekennzeichnet, dass die Anordnung eine Einrichtung (50) aufweist, die eingerichtet ist, sich dem elastischen Biegen der Haken (15, 16) in einer entsprechenden Ebene der Anordnung entgegenzusetzen oder dieses zu beschränken, die radial in Bezug auf den Körper (5) des Tellers oder Halbtellers liegt.

16. Teller- oder Halbteller- und Hakenanordnung nach Anspruch 15, dadurch gekennzeichnet, dass die Einrichtung, die eingerichtet ist, sich dem elastischen Biegen der Haken entgegenzusetzen oder dieses zu beschränken, zumindest eine Abdeckung (50) aufweist, die an zumindest einer der beiden gegenüberliegenden Flächen des Körpers (5) des Tellers oder Halbtellers angebracht ist, wobei die zumindest eine Abdeckung zumindest die Seite der radialen Einschnitte (6a, 6b) schließt, die dem Boden in dem Bereich gegenüberliegt, der von dem Abschnitt der Haken (15, 16) besetzt ist, der von den Absätzen (15, 16) zu der Achse (8) des Tellers hervorsteht.

17. Haken (15) für Monozylinder-Strumpfrundstrickmaschinen mit einem flächigen Körper, der ein hakenförmiges Ende (17) aufweist, dadurch gekennzeichnet, dass dieser einen longitudinalen Schlitz (7) aufweist, der an dem Ende offen ist, dass in Bezug auf das hakenförmige Ende gegenüberliegt, wobei der Schlitz einem Abschnitt des Körpers des Hakens eine gabelartige Form verleiht, die geeignet ist, mit zwei gegenüberliegende Flächen des Körpers des Tellers oder Halbtellers einer Strickmaschine in Eingriff zu kommen.

18. Haken nach Anspruch 17, dadurch gekennzeichnet, dass der longitudinale Schlitz (7) durch zwei zueinander parallel gegenüberliegende Seiten begrenzt ist.

19. Haken nach Anspruch 18, dadurch gekennzeichnet, dass zumindest der Abschnitt (23) des Hakenkörpers lateral flexibel ist, der nahe dem hakenförmigen Ende (17) liegt.

20. Haken nach Anspruch 17, dadurch gekennzeichnet, dass der flexible Abschnitt (23) dünner als der übrige Teil des Hakenkörpers ist.

21. Haken nach Anspruch 20, dadurch gekennzeichnet, dass der flexible Abschnitt bogenförmig und konkav auf einer Seite des Haken ist, wenn keine Kraft auf den flexiblen Abschnitt (23) einwirkt.

22. Haken nach Anspruch 17, dadurch gekennzeichnet, dass der Punkt des hakenförmigen Endes (17) auf einer Seite des Hakens eine Aussparung (24) zum Aufnehmen der Stelle des hakenförmigen Endes eines benachbarten Hakens aufweist.

23. Haken nach Anspruch 17, dadurch gekennzeichnet, dass der Körper des Hakens mit einem ersten Absatz, der transversal vorsteht und bestimmt ist, von einer oberen Fläche des Körpers des Tellers oder Halbtellers hervorzustehen, der bestimmt, den Haken aufzunehmen, und einen zweiten Absatz aufweist, der transversal von der Seite des Körpers des Hakens hervorsteht, die in Bezug auf die Seite gegenüberliegt, die den ersten Absatz trägt, und bestimmt ist, von der gegenüberliegenden Fläche des Teller- oder Halbtellerkörpers hervorzustehen.

Revendications

1. Ensemble de cadran (1) ou demi-cadran (2) et de crochet pour des métiers à tricoter circulaires à cylindre unique, pour produire des articles tubulaires fermés à une extrémité longitudinale, comprenant un corps de cadran ou demi-cadran (5) qui est sensiblement en forme de disque ou demi-disque et est pourvu, sur au moins une de deux faces opposées de celui-ci, d'une pluralité de rainures radiales (6), dont chacune loge de façon coulissante au moins un crochet (15, 16), caractérisé en ce que les crochets comportent une fente longitudinale (7) qui est ouverte dans la direction de l'axe dudit corps de cadran ou demi-cadran (5), ladite fente (7) donnant à une partie du corps des crochets une forme bifurquée qui vient en prise avec les deux faces opposées dudit corps de cadran ou demi-cadran (5).

2. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 1, caractérisé en ce que ledit corps (5) du cadran ou demi-cadran comporte des rainures radiales (6a, 6b) sur ses deux faces, les deux côtés parallèles mutuellement opposés de ladite fente longitudinale (7) venant en prise de façon coulissante avec le fond des rainures radiales correspondantes (6a, 6b) formées dans les deux faces du corps de cadran ou demi-cadran (5).

3. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 1, caractérisé en ce que chacun des crochets (15, 16) comporte un corps laminaire qui est agencé sur un plan radial (5) du corps de cadran ou demi-cadran et dans lequel l'extrémité opposée (17) par rapport à l'axe dudit corps de cadran ou demi-cadran présente une forme de crochet et comporte au moins un talon (18, 19) qui fait saillie, dans une région intermédiaire du prolongement du corps du crochet (15), de manière à être parallèle à l'axe dudit corps de cadran ou demi-cadran, ledit talon faisant saillie d'une des deux faces dudit corps de cadran ou demi-cadran et pouvant être mis en prise par des moyens d'actionnement (30, 31, 32, 33, 36) qui font face à une face dudit corps de cadran ou demi-cadran pour le mouvement dudit crochet dans une direction radiale par rapport au corps du cadran ou demi-cadran.

4. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 1, caractérisé en ce que chacun des crochets (15, 16) est pourvu d'un premier talon (18) qui fait saillie d'une face du corps de cadran ou demi-cadran et d'un second talon (19) qui fait saillie de la face opposée du corps de cadran ou demi-cadran, lesdits talons pouvant être mis en prise par des moyens d'actionnement qui font face à une face dudit corps de cadran ou demi-cadran pour le mouvement dudit crochet dans une direction radiale par rapport au corps de cadran ou demi-cadran (5).

5. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 1, caractérisé en ce que chacune desdites rainures (6, 6a, 6b) loge deux crochets, respectivement un premier crochet (15) et un second crochet (16), qui se trouvent mutuellement côte à côte et dans lequel des extrémités qui sont dirigées dans une direction opposée à l'axe dudit corps du cadran ou demi-cadran ont une forme de crochet et sont opposées mutuellement, au moins la partie (23) dudit second crochet (16) qui est proximale à l'extrémité en crochet (20) étant flexible pour se rapprocher ou s'éloigner dudit premier crochet (15), un côté desdites rainures radiales formant un support latéral pour ladite partie flexible (23) dudit second crochet pour sa flexion vers le premier crochet (15) suivant le mouvement dudit second crochet (16) vers l'axe dudit corps de cadran ou demi-cadran (5) grâce à l'action desdits moyens d'actionnement (30, 31, 32, 33, 36).

6. Ensemble de cadran ou demi-cadran et de crochet, selon la revendication 5, caractérisé en ce que la partie flexible (23) dudit second crochet (16) est plus mince qu'une partie restante dudit second crochet (16).

7. Ensemble de cadran ou demi-cadran et de crochet, selon la revendication 5, caractérisé en ce que la pointe de l'extrémité en crochet (17) dudit premier crochet (15) comporte, sur son côté dirigé vers ledit second crochet (16), un évidement (24) pour loger la pointe de l'extrémité en crochet (20) dudit second crochet (16) suivant la flexion élastique de ladite partie flexible dudit second crochet vers ledit premier crochet.

8. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 5, caractérisé en ce que s'il n'y a aucune force agissant sur ladite partie flexible (23) dudit second crochet (16), il a une forme arquée dans laquelle la concavité est dirigée vers un côté dudit premier crochet (15).

9. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 1, caractérisé en ce qu'une partie du corps du cadran ou du corps (5) du demi-cadran peut être retournée autour d'un axe diamétral du cadran ou demi-cadran.

10. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 3, caractérisé en ce que lesdits moyens d'actionnement comprennent des cames d'actionnement (30 à 33, 36) qui font face à une face dudit corps de cadran ou demi-cadran et forment des passages qui peuvent être mis en prise par les talons des crochets (15, 16), lesdits passages étant conformés de manière à produire un mouvement des crochets dans une direction radiale du corps de cadran ou demi-cadran (5).

11. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 10, caractérisé en ce qu'un talon supérieur et un talon inférieur des crochets (15, 16) peuvent venir en prise sélectivement avec lesdites cames suivant le retournement de ladite partie du corps de cadran ou demi-cadran (5) autour dudit axe diamétral.

12. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 10, caractérisé en ce que les talons de la paire de crochets (15, 16) agencée dans une même rainure radiale du corps de cadran ou demi-cadran (5) sont agencés côte à côte et se chevauchent partiellement latéralement, les talons (18, 19, 21, 22) dudit premier crochet (15) et dudit second crochet (16) comportant des régions qui s'étendent différemment dans une direction radiale du corps de cadran ou demi-cadran (5) par rapport à des régions correspondantes des talons du second crochet (16) pour un mouvement différent, le long de la rainure radiale correspondante, dudit premier crochet par rapport audit second crochet.

13. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 12, caractérisé en ce que les talons (18, 19) dudit premier crochet (15) possèdent une région de forme échelonnée sur leur côté qui est dirigée vers l'extrémité en crochet (17) du premier crochet (15) et en ce que les talons (21, 22) dudit second crochet possèdent une région de forme échelonnée sur leur côté qui est dirigée vers l'extrémité qui se trouve en face par rapport à l'extrémité en crochet (20) du second crochet (16).

14. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 12, caractérisé en ce que dans au moins certaines desdites cames d'actionnement (30, 31, 32, 33) le profil qui peut être mis en prise par un des deux côtés des talons des crochets (15, 16) présente une forme échelonnée pour correspondre à la forme du côté du talon des crochets.

15. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 5, caractérisé en ce qu'il comprend des moyens (50) adaptés pour contraster ou limiter la flexion élastique des crochets (15, 16) dans un plan correspondant d'agencement qui se trouve de façon radiale par rapport au corps (5) du cadran ou demi-cadran.

16. Ensemble de cadran ou demi-cadran et de crochet selon la revendication 15, caractérisé en ce que lesdits moyens adaptés pour contraster ou limiter la flexion élastique des crochets comprennent au moins un couvercle (50) qui est appliqué sur au moins une des deux faces opposées du corps (5) du cadran ou demi-cadran, ledit au moins un couvercle fermant au moins le côté desdites rainures radiales (6a, 6b) qui se trouve en face du fond dans la région occupée par la partie des crochets (15, 16) qui fait saillie desdits talons (15, 16) vers l'axe (8) dudit cadran.

17. Crochet (15) pour métiers à tricoter circulaire à cylindre unique, comprenant un corps laminaire qui comporte une extrémité en crochet (17), caractérisé en ce qu'il possède une fente longitudinale (7) qui est ouverte à l'extrémité qui se trouve en face par rapport à ladite extrémité en crochet, ladite fente donnant à une partie du corps du crochet une forme bifurquée appropriée pour venir en prise avec deux faces opposées du cadran ou demi-cadran de corps d'une machine à tricoter.

18. Crochet selon la revendication 17, caractérisé en ce que ladite fente longitudinale (7) est délimitée par deux côtés opposés mutuellement parallèles.

19. Crochet selon la revendication 18, caractérisé en ce qu'au moins la partie (23) dudit corps de crochet qui se trouve proximale à l'extrémité en crochet (17) est flexible latéralement.

20. Crochet selon la revendication 17, caractérisé en ce que ladite partie flexible (23) est plus mince que la partie restante du corps de crochet.

21. Crochet selon la revendication 20, caractérisé en ce que si aucune force n'agit sur ladite partie flexible (23), ladite partie flexible est arquée et concave sur un côté du crochet.

22. Crochet selon la revendication 17, caractérisé en ce que la pointe de ladite extrémité en crochet (17) comporte, sur un côté du crochet, un évidement (24) pour loger la pointe de l'extrémité en crochet d'un crochet contigu.

23. Crochet selon la revendication 17, caractérisé en ce que le corps du crochet est pourvu d'un premier talon, qui fait saillie transversalement et est prévu pour faire saillie d'une face supérieure du corps du cadran ou demi-cadran qui est prévue pour recevoir le crochet, et d'un second talon, qui fait saillie transversalement du côté du corps du crochet qui se trouve en face par rapport à celui qui supporte ledit premier talon et est prévu pour faire saillie de la face opposée du corps de cadran ou demi-cadran.

Drawing