[0001] The present invention concerns a telescopic container for carrying about rolled up
drawings, that may be adapted with a blocking device for the components thereof to
the length of the roll that is to be contained.
[0002] Actually, no container for drawings is known in the art able to prevent, during transport,
undesired movements of the contained roll.
[0003] Infact, sometimes plastic or paperboard tubes are used for said purpose, said tubes
being placed one inside the other and kept in position due to the friction between
the surfaces into contact, but in case of eventual shocks or due to other reasons
said tubes may reciprocally slide thus causing a considerable deterioration of the
inner rolls.
[0004] It is the aim of the present invention to realize a container of easy realization
and low cost for carrying about drawings rolls of different dimensions, little en-
cumbersome and of sure functionality.
[0005] According to the present invention, said aim is reached by means of a container consisting
in at least two prismatic tubes preferably having a square section, with a telescopic
connection such as to enter one into the other for carrying about drawing rolls of
minimum dimensions placed inside or, following to the partial extraction of the inner
tube, able to reach different dimensions according to those of the contained rolls,
said dimensions being kept fixed without any possibility of sliding, by a blocking
device consisting in two toothed pins that may be distanced by means of a pushbutton
sliding inside a slit, being out of one piece and provided nearby the open end of
the outer te- lescoptelement, so that it may get introduced into the toothing of a
rack, said rack being of the same thickness cf the inner element, thus preventing
the reciprocal movement of said elements.
[0006] Said sliding pushbutton shows, on the two sides thereof, one or more projections,
which determine the distancing of said toothed pins, as well as a cavity allowing
the elastic return of said pins when said elements get disengaged, said elements now
being no longer constrained and therefore reciprocally sliding again so as to provide
for the opening of the container or for the variation of the total length thereof.
[0007] The present invention will be described more in detail hereinbelow according to the
attached drawings showing one preferred embodiment.
Figure 1 shows a perspective view in partial transparence of a container for rolled
up drawings consisting in telescopic elements according to the present invention.
Figure 2 shows a detail of an axonometric, exploded view of the blocking device.
[0008] The figures show a container for rolled up drawings comprising element 1 of prismatic
structure and square section being telescopically inserted into outer element 2, of
similar shape, characterized in the blocking device consisting in pushbutton 3 provided
with end lateral projections 4 and 5 being separated by cavities 6, said pushbutton
being sliding on resting plane 7 of the same shape of element 2 and projecting, with
upper edge 8, from slit 9 provided in plate 10 that becomes out of one piece by means
of the gain of pins 15 to the outer end of element 2 and by toothed pins 11 out of
one piece with small elastic bars 12 which, together with small end plates 13, provided
with holes 14 for the gain of small pins 15 of plate 10, form a rectangular continuous
structure, so that the sliding, caused by the pressure performed onto said pushbutton
3, leads said projections 4 and 5 against shapes 14 of pins 11 and the introduction
of small teeth 16 into corresponding housings 17, laterally realized in the shape
of a rack out of the same thickness of inner element 1, preventing, according to the
aim set forth, any movement of said two telescopic elements 1 and 2.
[0009] A further blocking of the free movement of elements 1 and 2 is realized by means
of the rack with large steps or teeth 18 placed in groove 19 laterally realized in
inner container 1, against which plane 7 rests every time it is forced to move, so
as to vary the total length of the telescopic container.
[0010] One ot both said elements 1 and 2 may show, in a preferred embodiment, openings that
may also be circular, provided at the ends thereof and closed by taps 20, for introducing
and taking off the drawings without disengaging the axial blocking.
1. A portable container for rolled up drawings consisting in telescopic elements (1
and 2) and in a blocking device, characterized in that said elements (1 and 2) are
of pris- matic shape and square section and characterized in a pushbutton (3) sliding in slit
(9) out of one piece with the outer end of element (2) that will distance, by means
of projections (4 and 5) thereof, toothed pins (11) leading said pins to gain in housings
(17) of a rack out of the same thickness of inner element (1), thus preventing the
sliding of elements (1 and 2) and causing the blocking thereof in different positions
according to the length of the contained rolls.
2. A container for rolled up drawings with telescopic elements and blocking device,
with variable length, according to claim 1, characterized in that said toothed pins
(11) are out of one piece with small elastic bars (12) which will form, together with
small end plates (13) a continuous rectangular structure, so that the sliding of pushbutton
(3) causes projections (4 and 5) to push against shapes (14) of pins (11) determining
the introduction of small teeth (16) into the housings of rack (17).
3. A container for rolled up drawings with telescopic elements and blocking device,
with variable length, according to claim 1, characterized in the large rack with steps
or teeth (18) placed in groove (19) laterally realized in inner container (1), against
which plane (7) rests after each forced movement, for varying the total length of
the telescopic container.
4. A container for rolled up drawings with telescopic elements and blocking device,
with variable length, according to claim 1, characterized in end openings on elements
(1 and 2) closed by taps (20) for introducing and taking off the drawings without
disengaging the axial blocking means.
