US2365288A - Apparatus for cutting strips - Google Patents

Description

Dec. 19, 1944.

s. J. PASK 2,365,288 APPARATUS FOR CUTTING STRIPS Filed Feb. 16, 1944 2 Sheets-Sheet 1 INVTOR.

.De. 19,1944.. sq. PASK- 2,365,288

APPARATUS FOR CUTTING STRIPS Filed Feb. 16, 1944 2 Sheets-Sheet 2 nyV NToR.

Patented Dec. 19, 1944 u NITE o STATES PATENT O FFICE APPARATUS FOR CUTTING STRIPS Stanley J. Pask, Long Island" N Y., ajssignor to'Grant Positype Corporation, New York, N. Y.; a corporation of New York Application February 16, 1944, Serial No. 522,644

4 Claims. (01.164-142) This invention relates to machines for severing tape-like strips'of material into uniform short lengths, with special reference to cutting moving picture photo films crosswise into individual frames.

Anobject of the invention is to provide a machine which will advance a strip of film a predetermined distance along a fiat surface, momentarily interrupt it, and, during the cessation of movement, shear the strip transversely, there after automatically resuming forward movement of the strip and completing the cycle of its operation, repeating as required.

Further features are in the provision of means for positively moving the strip, between lateral guides, uniform distances and gathering the cut portions in consecutive order progressively.

These and other objects, which will become apparent as the description proceeds, are accomplished by the novel construction, combination and. arrangement of parts hereinafter described and illustrated in the accompanying drawings, constituting a graphic component .of this disclosure, and in which:

.Figure l is a perspective View of a complete embodiment of the invention. a t

Figure 2 is a front elevational View thereof with the cover down.

Figure 3 is a rear elevational view of the same,

the cover being shown as raised.

Figure 4 is a front elevational view of the machine.

Figure 5 is a fragmentary plan view of a conventional type of film and its advancing mechanism, partially in section.

Figure 6 is a perspective view of a finished article, its leaves showing the product of the machine.

Referring in greater detail to the drawings, the numeral l5 designates one of a pair of legs and I6 the other, connected by a frame IT on which is secured a smooth surfaced, level rectangular plate constituting a table I8 extending over and past the leg l6.

A housing l9, integral with the leg'l5, forms a journal for a shaft 20, disposed transversely of the table, having a fixed collar 2| on its front end, while on its rear portion, spaced outwardly from the housing, is fixed a drive plate 22 arcuately shaped and having a recess 23 of the same radius as that of the arc; an arm 24, of reduced 28 still further out on the shaft is fixed a manually operable crank 29. Another bearing 30, higher up on the leg l5, carries a spindle 3| having fixed on its rear outer end,,a lever 32 provided with a roller 33 drawn against the cam 26 by.a tension spring 34 having itsends attached respectively tothe leg and lever. A stud 35, set in the frame n,- has revolubly mounted on it aspur gear 35, alongside of which is a disc 3'! having uniformly spaced radial recesses 38, four being shown, between each pair of which the periphery of the disc is concavely formed as at 39, to the radius of the drive plate 22 which is arranged to make contact.

The drive pin is fitted to engage in the recesses 38in timed relation, turning the disc onefourth of a revolution, rendered'possible by the recess'23' in the driver as. it is rotated, the disc at allother times being locked by the element 22 this construction being the well known Geneva movement for intermittently starting and stop-ping mechanism connected therewith.

thedisc and gear are rigidly connected,

movement is transmitted to 'a pinion 40, fixed on i a spindle 4|, journaled in the frame I1 and having secured on its end portions sprockets 42.

The teeth of the sprockets 42 extend through spaces 43 in the table I8, positioned slightly rearward of alined openings 44 adapted to guide stay pins 45 set in a bar 46 carried by the upturned terminals of a lever 41, fixed on the spindle 3| which, as has been seen, is actuated by the cam 26 in timed relation to the momentary cessations of movement of the sprockets 42.

Set in the upper surface of the table l8 are a plurality of-guide pins 48 arranged to maintain the strip from lateral movement, the strip X pass.- ing off the rear edge of the table over a fixed knife 49 supported by a reinforcing angle bar 50 attached under the table I8 at its outer edge.

Extending upwardly from the rear edge of the frame IT, at its ends, are two bosses 5| and 52 forming bearings for a spindle 53 having screwthreads at its front end to receive a knurled adjusting nut 54, its hub abutting the boss 5|. The opposite end of the spindle has rigidly attached to it a knife blade 55 adjustable relative to the fixed blade 49 by the nut 54; an arm 56, fixed on the spindle, adjacent the boss 5|, carries a roller 5! held against the cam 26 by a spring 58 coiled around the'spindle and anchored at its ends.

A cover plate 59 is provided with hinge trunnions B0 rotatable on the spindle 53 and having arms 6! re-enforcing the plate; the cover has openings 62 to receive the guide pins 48 when closed and apertures 63 for the teeth of the sprockets 42.

Adjusting screws 64 limit the closing of the cover 59, which is held by a snap catch 65 when closed, the catch having a beveled upper edge 66 to engage the cover when closing and a handle 61 for retracting it; this catch is disposed at the front of the machine, being supported by a bar 68 secured to the under side of the frame 11.

To complete the machine, a tray 69 is suspended at a downward inclination from the angle bar 50 at the front of the table, to catch the clippings from the strip, the tray having a central opening for convenience in removing the cut pieces.

In operation, the cover 59 is raised, leaving the table l8 clear to receive the strip of material to be cut; this strip is placed between opposed pairs of the guide pins 48 and the teeth of the sprockets entered into the marginal perforations of the strip in such manner as to bring the line of severance to the outer edge of the fixed knife 49. Upon being closed, the cover confines the strip, but permits it to move linearly; upon operating the crank 29, the strip is advanced by the gearing, actuating the sprockets a definite distance, then held stationary by the Geneva device, and further by the pins 45; thereupon the movable knife 55 descends, cutting off such portion of the strip as has been determined upon and then raised, the cut fragments dropping in consecutive order into the tray 69.

Thereafter, the pins 45 are lowered and a new cycle of operations begin, the machine being automatic in its operations so long as the shaft is rotated, either by hand, as shown, or by power,

Having thus described the invention and set,

forth the manner of its construction, application and use, what is claimed as new and desired to be secured by Letters Patent of the United States,

1. In a machine for cutting off uniform lengths of strip material, a stand having a level table, a transverse shear blade fixed at one end thereof, a hinged blade cooperative therewith, a hinged cover foldable over the table and strip thereon, means for advancing the strip therebetween at uniform intervals over the fixed blade, cam actuated means to operate the hinged blade during cessation of movement of the strip, and a tray to receive the cut portions of the strip in consecutive order.

I 2. In a machine, for cutting off uniform lengths of strip material, a stand having a level table, atransverse shear blade fixed at one end thereof, a hinged blade cooperative therewith, means for adjusting the hinged blade relative to the fixed blade, fixed guides for the strip set in said table, means to advance the strip intermittently, means to immobilize the strip during the intermission of its movement, a cover foldable over said table, said cover retaining the strip fiat upon the table, means to clamp the cover when so folded, said means being releasable, and means to receive the sheared portions of the strip in succession.

3. A machine for cutting perforated moving picture film strips into uniform frames, comprising a table having a level top, a shear blade fixed at one end of the table, sprockets having teeth extending upwardly through the table to engage the film perforations, at Geneva device geared to said sprockets, a driven shaft to actuate the Geneva device, a cam on said shaft, a hinged shear blade co-operative with the fixed blade, and means actuated by said cam to operate the hinged blade periodically.

4. A machine for cutting perforated moving picture film strips into uniform frames, comprising a table having a transverse shear blade at its rear end, a shaft at the front end of the table, a drive means therefor, a Geneva device driven by said shaft, sprockets intermittently actuated by said device, their teeth protruding through the table to engage openings in the strips, a hinged blade, a cam on said shaft to actuate the hinged blade in timed relation to said device thereby to sever the strips, a lever pivoted to the table, and actuated by said cam, and detent pins carried by said lever to immobilize the strips during the cutting operation of said shear blades,

STANLEY J. PASK.

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