Field of the Invention
[0001] The invention relates to a combined trigger mechanism of the auto-loading weapon
with a striking hammer enabling the shooting either in single action/double action
operation having the possibility to lock and activate the hammer by the controlled
manner, or in the exclusive double action operation. The invention also relates to
an auto-loading manual weapon with this combined trigger mechanism, which enables
the user to select a suitable shooting operation.
Background of the Invention
[0002] The following trigger mechanisms have been used in the auto-loading weapons:
The Single Action (SA) trigger mechanism, where pulling the trigger can result in
releasing of the striking mechanism and thus in the shot, only if the shooter himself
or via the closure movement after the previous shot firstly draws the striking mechanisms
by such a way that the striking hammer stays caught in the cocked position. This mechanism
can be also supplemented with a manual safety catch.
[0003] Double Action (DA) trigger mechanism works in such a way that the shooter draws the
striking mechanism by the pulling of the trigger until the striking hammer is released
and the projectile is initiated (fired). At the same time the striking hammer is in
the front position or on the safety cog.
The combination of single action and double action trigger mechanism, SA/DA. These
types of the trigger mechanisms in various construct variants are disclosed in
CZ 301749 B6,
EP 0 186 073 B1,
US 4,028,836,
US 7,257,918 B2,
US 6,381,892 B1,
US 6,341,442 B1. These documents do not address the safe triggering of the hammer and using in the
exclusive double action operation.
DC (decocker) trigger mechanisms with the safe triggering of the hammer without a
shot, i.e. having the controlled activation of the hammer, are described for example
in
CZ 293 435 B6,
US 6,718,680 B2,
US 6,481,139 B2,
US 6,588,136 B2. The weapons described in these documents cannot be used in the exclusive double
action operation (DAO).
The trigger mechanisms with the exclusive double action operation are described for
example in
EP 1 472 501 B1. This document, however, does not enable the use in SA/DA operation.
EP 0 730 135 B1 and
EP 2 525 185 A1 describe the weapons with the trigger mechanisms enabling both single action and
double action operations, with the possibility to adapt it for the exclusive double
action operation. However such modification of the trigger mechanism requires the
change of some parts of the trigger mechanism or their inactivation. It represents
the intervention into the weapon construction, ant it is not possible to do such modification
by any control element of the weapon.
SK 279 478 B6 describes a multifunctional trigger mechanism having the possibility to switch the
shooting regimes by the control element on the weapon. This document, however, does
not address a safe releasing of the hammer in the single action operation, which releasing
is the important safety point.
[0004] The aim of this invention is to create a mechanism enabling easy switching of the
shooting operation between single action and double action operations with the possibility
to put the safety catch on; which mechanism is supplemented with the safe release
of the drawn hammer and the exclusively double action operation (SA/DA+DC and DAO),
for the auto-loading weapons intended for professional and civil using, without the
need to disassemble the weapon.
Subject Matter of the Invention
[0005] The disadvantages of the prior art are overcome by the trigger mechanism for the
auto-loading weapon, which mechanism enables to change the shooting operation by the
single control element on the weapon to the single action/double action operation
with the safe hammer release element with the possibility to put the cocked hammer
on safety catch, and for the shooting exclusively in the double action operation.
The trigger mechanism comprises the swivel pin equipped with a groove having the edge
for controlling of the main hammer catch for setting the exclusive double action operation
and for the safe release of the striking hammer, and equipped with a depression for
inserting of the main catch, upon the deflection from the engagement with the striking
hammer and the part of the cylinder surface of the swivel pin, in order to secure
the main hammer closure.
[0006] The main hammer catch has a tooth for the catching of the striking hammer tooth,
and a projection for the controlling of the deflection from the engagement with the
striking hammer by the means of the swivel pin in DAO operation and upon the safe
lowering of the hammer. The main hammer catch has a surface for the deflection from
the engagement with the hammer by a transfer-bar and the projection for the securing
in SA/DA operation by the means of the swivel pin.
[0007] The auxiliary hammer catch has a surface, on which the hammer falls upon its safe
lowering.
[0008] The striking hammer has a tooth for the engagement with the tooth of the main hammer
catch in the single action operation and the surface, by which it sits down to the
auxiliary hammer catch upon its safe lowering.
The trigger mechanism according to the invention consist of the swivel, the main catcher
of the hammer and the auxiliary catcher of the hammer, equipped with the means for
the mutual collaboration and for the collaboration with the hammer, wherein the swivel
is placed in revolving and adjustable position, and it is controlled by the control
element on the weapon surface.
Further subject matter of this invention represents the auto-loading weapon, particularly
a pistol having the possibility of the selection of the suitable shooting operation
by the means of the control element localized on the weapon surface, which shooting
operation can be the single action/double action operation (SA/DA operation) with
the safe lowering of the hammer or the possibility to secure the drawn hammer, or
the exclusive double action operation (DAO). The weapon according to this invention
consists of the handle, into which the container is inserted, which container is equipped
with the trigger mechanism according to this invention; the auto-safety lock; the
lever of the auto-safety lock; and the closure movable attached to the container lines.
The trigger mechanism according to this invention consists of:
- the swivel pin comprising the edge for the controlling of the main hammer catch in
DAO operation and for the safe lowering of the hammer, the depression engaging with
the main catcher upon the deflection for the release of the hammer in SA/DA operation,
and the part of the cylinder surface for the lock of the main hammer catch;
- the main hammer catcher equipped with the tooth for the catching of the hammer in
SA operation, while the main hammer catcher further comprises the projection enabling
the controlling of the deflection from the engagement with the hammer by the means
of the swivel pin in DAO operation, and upon the safe lowering of the hammer; the
surface for the deflection from the engagement with the hammer by the means of the
transfer-bar; and the projection for the locking by the means of the swivel pin in
SA/DA operation;
- the auxiliary hammer catcher equipped with the surface for the sitting down of the
hammer upon the safe lowering in DC operation; and
- the hammer equipped with the tooth for the engagement with the main hammer catcher
in the single action operation, and the surface, on which the auxiliary hammer catcher
is sat down upon the safe lowering of the hammer,
wherein these elements of the trigger mechanisms are arranged for the mutual collaboration
and the selection of the suitable shooting operation is done by the control element
localized on the surface of the weapon.
[0009] The greatest advantage of the mechanism resides in the fact that the user himself
can select the shooting operation as appropriate in the actual situation, which selection
is not possible in case of commonly used mechanisms. Thus, the appropriate selection
of the operation enables the application of all advantages provided by the individual
operations. Inappropriate selection of the shooting operation does not limit the using
of the weapon by any way. However, the user is losing comfort and particularly safety
offered by the weapon and thus is getting closer to the commonly used standards. The
caliber of the manual auto-loading weapon has no influence to the function and using
of the trigger mechanism. The switching between the individual operations is accomplished
by the means of the only control element positioned on the weapon without need to
change the grip of the weapon. The controlling is double-sided and enables the equal
control upon shooting, whether the weapon is hold in right or left hand.
Description of Drawings:
[0010]
Figure A.1.1 - view of the weapon handle
Figure A.1.2 - view of the container with the striking mechanism
Figure A.1.3 - view of the weapon closure
Figure A.1.4 - view of the fingerboard position restricter
Figure A.1.5 - view of the locking of the fingerboard position by the arresting rivets
Figure A.1.6 - view of the important construction details of the selected parts of
the mechanism
Figure A.2.1 - view of the arrangement of the mechanism parts from the right
Figure A.2.1 - view of the arrangement of the mechanism parts from the left
Figure B.1 - view of the weapon and the position of the controlling fingerboards in
SA operation - unlocked safety catch
Figure B.2.1 - view of the parts of the mechanism from the right in SA operation -
unlocked safety catch
Figure B.2.2 - view of the parts of the mechanism from the left in SA operation -
unlocked safety catch
Figure B.3.1 - section of the trigger mechanism in SA operation - unlocked safety
catch
Figure B.3.2 - section of the trigger mechanism in SA operation - unlocked safety
catch
Figure B.4 - section of the trigger mechanism in SA operation; the hammer is cocked
manually by the closure
Figure B.5 - section of the trigger mechanism in SA operation; the hammer is cocked
by the closure after the shot
Figure C.1 - view of the weapon and the position of the controlling fingerboards in
SA operation - locked safety catch
Figure C.2 - detailed view of the parts of the mechanism in SA operation - locked
safety catch
Figure C.3.1 - section of the trigger mechanism in SA operation - locked safety catch
Figure C.3.2 - section of the trigger mechanism in SA operation - locked safety catch
Figure D.1 - view of the weapon and the position of the controlling fingerboards in
SA/DA operation
Figure D.2.1 - view of the parts of the mechanism in SA/DA operation
Figure D.2.2 - view of the parts of the mechanism in SA/DA operation
Figure D.3 - section of the trigger mechanism in DA operation, before the release
of the hammer
Figure D.4 - detailed view of the parts of the mechanism in DA operation, before the
release of the hammer
Figure E.1 - view of the weapon and the position of the controlling fingerboards in
DC operation
Figure E.2 - detailed view of the parts of the mechanism in DC operation
Figure E.3.1 - section of the trigger mechanism in DC operation
Figure E.3.2 - section of the trigger mechanism in DC operation
Figure F.1 - view of the weapon and the position of the controlling fingerboards in
DAO operation
Figure F.2 - detailed view of the parts of the mechanism in DAO operation
Figure F.3.1 - section of the trigger mechanism in DAO operation, prior starting of
the hammer drawing
Figure F.3.2 - section of the trigger mechanism in DAO operation, prior starting of
the hammer drawing
Figure F.4 - section of the trigger mechanism in DAO operation, before the release
of the hammer
Figure F.5 - detailed view of the parts of the mechanism in DAO operation, before
the release of the hammer
Examples of Invention Embodiments
[0011] In this example the trigger mechanism used in the auto-loading manual firearm, particularly
the pistol, which individual main parts are illustrated on figure A.1.1 - the handle
1, figure A.1.2 - the container
2, and figure A.1.3 - the closure
3; has in its assembled form the container
2 inserted in the handle
1, and the closure
3 with the grooves
101b is movable positioned in the lines
101a on the container
2. There is the double-sided transfer-bar
21 in the handle
1 equipped with the trigger
6, and both right and left sides are equipped with the arresting rivets
24. The trigger mechanism according to this invention is placed in the container
2 equipped with the control element
22, in this case the fingerboard, and it is controlled by the trigger
6. The container comprises the lines
101a for the sliding of the closure
3 illustrated on figure A.1.3, and comprises the grooves
101b for collaboration with the lines
101a of the container
2. Figure A.1.4 illustrates the detailed view of the inside of the handle
1. It is possible to see one of the fingerboards
22 connected with the swivel pin
23 for setting of the selected position and thus the appropriate shooting operation.
The handle
1 is equipped with the left and right arresting rivets
24 with the sprung ball
104d and the stop surfaces
103. The inner surface of both fingerboards is equipped with the stop
102 for the sitting of some of the stop surfaces
103 on the handle
1 and depressions
104a and
104b with the edge
104c for receiving of the sprung ball
104d of the arresting rivet
24. Figure A.1.5 shows the fingerboards
22 with the inserted swivel pin
23 in three different positions enabling three shooting operations. Figure A.1.5, on
the left, shows the locking of the fingerboard by the arresting rivet
24 in the position for the operation SA/DA - locked safety catch, where the sprung ball
104d leans against the edge
104c. Figure A.1.5, in the middle, shows the locking of the fingerboard
22 by the arresting rivet
24 in the position for the operation SA/DA - unlocked safety catch, where the sprung
ball
104d leans against the depression
104b. Figure A.1.5, on the right, shows the locking of the fingerboard
22 by the arresting rivet
24 in the position for the DAO operation, where the sprung ball
104d leans against the depression
104a. Figures A.1.6 show the substantial parts of the trigger mechanism in the disassembled
state in two different views, while the substantial parts comprise the swivel pin
23, the main catcher
9.
1 of the hammer, the auxiliary catcher
9.
2 of the hammer, and the hammer
7. The swivel pin
23 is equipped with the depression with the edge
122a deflecting the main catcher
9.
1. The main catcher
9.
1 of the hammer is equipped with the tooth
122b for collaboration with the edge
122a of the swivel pin
23, and the tooth
108b for the collaboration with the tooth
108a of the hammer
7, and the surface
114 for the collaboration with the transfer-bar
21. The auxiliary catcher
9.
2 of the hammer is equipped with the sitting surface 109b for collaboration with a
surface
109a on the hammer
7. Figures A.2.1 and A2.2 show the partial sections of the assembling of the individual
parts of the trigger mechanisms according to this invention with the separated sideboards
35 and the fingerboards. The sideboards comprise the openings for the placing of the
axes of the individual parts. The double-sided transfer-bar
21 with the projection
106 and the contact
107 comprises the trigger
6 connected by the means of the transfer-bar
21 with the mechanism consisting of the main catcher
9.
1 of the hammer, the auxiliary catcher
9.
2 of the hammer, the swivel pin
23, the hammer
7, the firing pin
14 with the surface
110 for collaboration with the hammer
7, the striking spring
33, the cartridge match
105, the lever
48 of the auto-safety catch, and the auto-safety catch
13.
[0012] Functions of the individual parts of the trigger mechanism:
The closure 3 draws the hammer 7 by the backward movement after the shooting or manually before the shooting and by
the transfer-bar 21 disrupts the contact of the trigger 6 with the main catcher 9.1 of the hammer through the projection 106 after the shooting.
[0013] The trigger
6 in the single action trigger operation (SA) controls the main catcher
9.1 of the hammer and the auxiliary catcher
9.
2 of the hammer by the means of the transfer-bar
21. In double action trigger operation (DA) the trigger
6 controls the main catcher
9.
1 of the hammer and the auxiliary catcher
9.2 of the hammer by the means of the transfer-bar
21. In the exclusive double action operation (DAO) the trigger control the hammer
7 by the means of the transfer-bar
21.
[0014] In all operations the trigger controls the auto-safety catch
13 through the transfer-bar
21 and the lever
48 of the auto-safety catch.
[0015] The hammer
7 together with the striking spring
33 provides the source of kinetic energy for putting the firing pin
14 into movement by the hit on the surface
110 of the firing pin
14.
[0016] The main catcher
9.
1 of the hammer in the single operation (SA) - catches the hammer
7 on the tooth
108b by the tooth
108a in cocked position in the single action operation (SA).
[0017] In the regime of safe hammer release (DC) - the auxiliary catcher
9.
2 of the hammer catches the hammer
7 by the hit on the surface
109b upon the controlled lowering of the hammer
7 in the position, where the hammer
7 does not contact the firing pin
14, and simultaneously it serves as the safety catch in case of the spontaneous (uncontrolled)
release of the hammer
7 in SA/DA operations, when the trigger
6 is not pulled.
[0018] The auto-safety catch
13 - (the falling safety catch) is the safety element blocking the movement of the firing
pin
14 and prevents its contact with the projectile until the trigger 6 is pulled to the
firing position.
[0019] Upon the hit of the hammer
7 on the surface
110 of the firing pin
14 the firing pin is put into movement and the projectile is fired by the hit on the
primer
105 surface.
[0020] The transfer-bar
21 transfers the movement of the trigger 6 to the main catcher
9.
1 of the hammer and the auxiliary catcher
9.
2 of the hammer.
[0021] In the double action operation (DA) and exclusive double action operation (DAO) the
transfer-bar
21 transfers the movement of the trigger
6 to the hammer
7. The transfer-bar
21 transfers the movement of the trigger
6 to the auto-safety catch
13 through the lever
48 of the auto-safety catch. The transfer-bar
21 interrupts the contact of the trigger
6 with the main catcher
9.
1 of the hammer in the single action operation (SA) by the contact of the projection
106 with the closure
3 after the shot. The transfer-bar
21 disrupts the contact of the trigger
6 with the hammer
7 by the contact
107 of the transfer-bar 21 with the swivel pin
23 in DA and DAO operations.
[0022] The fingerboard
22 is the control element of the mechanism, which element switches between the SA/DA,
SA locked safety catch, DAO operations by the means of the swivel pin
23 and launches the controlled lowering of the hammer
7.
[0023] The swivel pin
23 is controlled by the movement of the finger boards
22 and by the movement of the main catcher
9.1 of the hammer and locks the mechanism in SA operation against the shot upon the cocked
hammer
7 by stopping of the movement by the part
118a of the cylinder surface of the swivel pin
23 by the projection
118b of the main catcher of the hammer. In SA operation, when the hammer 7 is drawn, upon
the downward movement of the finger boards
22 the hammer
7 is released by the pulling through the edge
122a of the swivel pin
23 by the projection
122b of the main catcher
9.
1 of the hammer from the tooth
108b of the main catcher
9.
1 of the hammer and thus lowering the hammer
7 safely. Upon the downward moving of the fingerboards the edge
122a of the swivel pin
23 presses the projection
122b of the main catcher
9.
1 of the hammer and thus the main catcher
9.
1 of the hammer is inactivated and the mechanism is switched to DAO operation.
[0024] The arresting rivet
24 - fixes the position of the finger boards
22 by the sprung ball
104d against the spontaneous movement.
[0025] The striking spring
33 - together with the hammer
7 serves as the source of the kinetic energy for the actuation of the firing pin
14.
[0026] Other parts of the trigger mechanism provide the securing of the individual main
parts in the container and handle. They include the container
2, the ejector
10, the sideboard
35, and the pegs used for hanging of the individual parts, and the spring for the enforcement
of the position and directing of the movement, which function is obvious from the
representation on other figures.
Description of the function in the individual operations:
[0027] SA (Single Action) - single action mechanism - figure B.1 shows the overall view
of the weapon with the fingerboards in horizontal position. In this case it corresponds
with the operation of the unlocked single action trigger mechanism (SA operation -
unlocked safety catch). Figures B.2.1 and B.2.2 show the positions of the individual
elements in SA operation - unlocked safety catch, from the right and from the left,
respectively. In SA operation the trigger
6 controls the main catcher
9.1 of the hammer by the means of the transfer-bar
21, and the auto-safety catch
13 by the means of the lever
48 of the auto-safety catch. In SA operation the tooth
108b of the main catcher
9.
1 of the hammer is fixed by the tooth
108a of the hammer
7 wherein the hammer
7 is always in the cocked position in SA operation before the shooting. In SA operation,
there are three ways of the hammer
7 drawing: manual direct drawing of the hammer
7, manual drawing by the means of the closure
3, and self-drawing with the closure 3 after the shot. On figures B.3.1 and B.3.2 the
hammer
7 is cocked directly manually by the pressure on the hammer
7 in the direction of arrow
111, where it is caught by the tooth
108b of the main catcher
9.
1 of the hammer. Figure B.4 shows the drawing of the hammer
7 by manual backward movement of the closure
3 in direction of the arrow
112, wherein the closure 3 pressing on the surface
113 of the hammer
7 presses the hammer
7, which is - by the means of the tooth
108a of the hammer
7, caught on the tooth
108b of the main catcher
9.
1 of the hammer. The closure
3 comes back to the position illustrated on figure B.3.1 and the mechanism is thus
prepared for the shot. Upon the pulling of the trigger
6 in the direction of the arrow
115 and the it is afterwards turned about the point
116 and by the moving of the transfer-bar
21 presses on the surface
114 of the main catcher
9.
1 of the hammer, which catcher deflects into the depression
123 on the swivel pin
23 and thus releases the hammer
7, which hits on the firing pin
14 and fires the projectile. After the shot (see figure B.5) the closure
3 draws the hammer
7 by the backward movement in the direction of the arrow
117 on the surface
113 of the hammer
7, which hammer remains cocked and caught by its tooth
108a on the tooth
108b of the main catcher
9.
1 of the hammer, and simultaneously the pressure of the closure
3 on the transfer-bar
21 in the position of the projection
106 interrupts the contact of the trigger 6 with the main catcher
9.
1 of the hammer. After the shot the closure
3 returns to the position illustrated on figure B.3.1 and the released trigger
6 resets the mechanism to the original configuration, and the next shot follows by
the pulling of the trigger
6 in SA operation. If the projectile is in the projectile chamber before the first
shot, it is necessary to cock the hammer
7. The shot in SA operation is characterized by lower resistance and shorter pace of
the trigger
6 in comparison with DA and DAO operations, as well as by the substantially shorter
reset of the mechanism in comparison with DAO operation.
[0028] SA locked by the manual safety catch - figure C.1 shows the overall view of the weapon,
when the finger boards
22 are levered in position SA/DA- locked, the hammer
7 is drawn. The position of the fingerboards
22 is locked against the self-movement by the arresting rivets
24. Figure C.2 shows the detailed view (for better representation the left finger board
22 is pushed away) illustrating the principle of the locking performed by the turning
movement of the finger boards
22 upwards in the direction of the arrow
124, which finger boards turn slightly the swivel pin
23 to the position, where the cylindrical surface
118a blocks the movement of the main catcher
9.
1 of the hammer in the projection
118b against the release of the hammer
7. The situation is illustrated on figure C.3.1, where the swivel pin
23 blocks the movement of the main catcher
9.
1 of the hammer in positions
118a and
118b, and does not enable its release from the tooth
108a on the hammer
7. Figure C.3.2 shows the position and arrangement of the auxiliary catcher
9.
2 of the hammer, which catcher serves as the secondary safety element in the locked
SA operation, in case of eventual spontaneous release of the hammer
7.
[0029] DA (Double Action) - double action mechanism referred also as single action/double
action - SA/DA mechanism. Figure D.1 shows the overall view of the weapon, where the
finger boards
22 are in SA/DA position (horizontally), and the hammer
7 is lowered. Figure D.2.1 and figure D.2.2 show the arrangement of the parts. Further
to the method of SA operation the hammer
7 can be cocked also through the transfer-bar
21 by the pulling of the trigger
6 in the direction of arrow
115, when it engages in the position of teeth
119 on the hammer
7 and draws the hammer
7 into the position shown in figure D.3 and figure D.4, where the gradual press, up
to the position defined by the mechanism, releases the teeth
119 of the hammer
7 from the transfer-bar
21 by pushing the transfer-bar
21 in the place of the surface
120 away from the swivel pin
23 and the released hammer
7 fires the projectile by the hit on the firing pin
14. Simultaneously the transfer-bar
21 pushes the auto-safety catch
13 through the lever
48 of the auto-safety lock and thus releases the blocked firing pin
14. After the shot the hammer
7 stays cocked by the closure 3 on the main catcher
9.
1 of hammer as shown on figure B.5. After the reset the mechanism is prepared for the
next shot in SA operation with the arrangement of the parts illustrated on figure
B.3.1. DA mechanism is always in combination with SA mechanism and when the projectile
is in the projectile chamber, it is not necessary have the hammer
7 cocked before the first shot.
[0030] DC (DeCocker) - deactivation of the cocked hammer is the supplement of SA/DA mechanism
with the controlled lowering of the hammer
7 without the shot, even when the projectile is in the projectile chamber. We start
from the state illustrated on figures B.3.1 and B.3.2, where the hammer
7 is cocked. Figure E.1 shows the view of the weapon illustrating the situation of
the controlled lowering of the hammer
7 without the shot by the pushing of the finger boards
22 downwards in the direction
121 and the hammer
7 is lowered into the state according to figure E.1. Figure E.2 provides the detailed
illustration of the arrangements of the parts of the mechanism. The finger boards
22 slightly turns the swivel pin
23, which pushes the main catcher
9.
1 of the hammer away by the edge
122a in the point of the projection
122b and lowers the hammer
7, which is stopped by the impact of the surface
109a on the surface
109b of the auxiliary catcher
9.
2 of the hammer. Figures E.3.1 and E.3.2 show the mechanism after the controlled lowering
of the hammer
7, where you can see that the hammer
7 remains caught in the safe distance from the firing pin
14. Even in the case of failure, e.g. due to the mechanical damage of the auxiliary
catcher
9.
2 of the hammer or the hammer
7 the firing pin
14 is locked against the movement of the auto-safety catch
13 and no shot is fired.
[0031] DAO (Double Action Only) mechanism - the overall view of the weapon is shown on figure
F.1, where the finger boards
22 are in DAO position, while the hammer
7 is lowered. The position of the fingerboards is locked against the self-movement
by the arresting rivets
24. Figure F.2 shows the arrangement of the parts, where the switch to DAO shooting
operation is carried out by the pushing of the finger boards downward and thus turning
slightly the swivel pin
23, which pulls away the main catcher
9.
1 of the hammer by the edge
122a by the pressing of the main catcher on the projection
122b and thus inactivates it. Figure F.3.1 and figure F.3.2 show the mechanism prepared
for the shooting in DAO operation. The pulling of the trigger
6 in the direction
115 results in the drawing of the hammer
7 by the means of the transfer-bar
21 through teeth
119 and by the continuing pulling up to the position defined by the mechanism according
to figures F.4 and F.5 the hammer
7 is released by the pushing of the transfer-bar
21 away from the swivel pin
23 in the place of the surface
120 and by the hit on the firing pin
14 the projectile is fired. Simultaneously the transfer-bar
21 pressing the lever
48 of the auto-safety catch lifts the auto-safety catch
13 and releases the firing match
14 before the shot. After the shot the hammer
7 remains decocked and returns together with the closure
3 to the position before the shot as shown on figures F.3.1 and F.3.2. The hammer
7 is slowed by the surface
125 of the closure
3 to prevent the firing upon the hit on the firing pin. After the reset of the mechanism
the next shot is again in DAO operation. Drawing of the hammer
7 is characterized by the higher resistance and the long pace of the trigger
6, as well as by the long reset of the trigger mechanism.
[0032] Reset of the trigger mechanism - it is the act needed for the re-preparation of the
mechanism for the shooting after the interruption of the contact of the trigger
6 and the main catcher
9.
1 of the hammer after the shot as shown on figure B.5, where the closure
3 in the point of the projection
106 pushes the transfer-bar
21. Reset is performed by the forward movement of the trigger
6 against the movement
115, spontaneously by the pressure of the expansion spring
30 to the trigger
6 position before the shot as shown on figure B.3.1, in SA operation, or on figure
F.3.1, in DAO operation.