US1416168A - Perforating machine - Google Patents

Description

C. R. CARLETON. PERFOHATING MACHINE. APPucATmN FILED JuLYzo. 1920.

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PERFORATING MACHINE.

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C. R. CAHLETON.

PERFORATING MACHINE. APPLICATION FILED JULYZU. 1920. 94@,163 Patented May16,1922.

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PERFORATING MACHINE. APPLICATION FILED 1uLY20.192o.

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C. R. CARLETON. PERFORATING MACHINE.

APPLICATION FILED IuLYzo. 1920.

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C. R. CARLETON. PERFORATING MACHINE.

APPLICATION FILED JULI/20, 1920.

Patented May 16, 1922.

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.STATES CHARLES R. CARLETON, F BROOKLYN, NEW YORK.

PERFORATING MACHINE,

Lerares.

Specification of Letters Patent. Patented Flayg 16., 1922.

Application led July 20,-120. Serial No. 397,593.

To all whom it may concern:

, Be it known that I, CHARLES R. CARLI-rmx,

citizen of the United States, and resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Perforating Machines, of which the following is a specification.

This4 invention rela-tes to a machine for perforating mot-ion picture films, having more particular reference to a perforating machine in which t-he feeding, perforating and rewinding of the film are all mechanically accomplished.`

The invention VAhas for general objects to minimize or eliminate the chance of the oil used in lubricating the machine getting on the film; to render the operating mechanism easily accessible -for replacement or otherwise, and to provide a. machine. of generally simple, compact, and durable construction.

For further Vcomprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying draw-- ings, and to the appended claims in which the various novel features of the invention are more particularly set. forth.

Fig. 1 of the drawings is a front elevation 1of 'a perforating machine constructed according to the invention.

Fig. 2 is an enlarged partial transverse.

" whlch extends downwardly at the rear of section on the line 2-2 of Fig. 1.

Fig. Sais a detail longitudinal section on the line 3-3 of Fig. 2.

' Fig. 4 is a horizontal section on the line 4--4of Fig. 3. Fig. 5 is a transverse section on the line 5-5 of Fig. 3.

Fig. 6 is'a transverse section on the line Fig. 7 .is a fragmentary axial vertical seic- 'tion of the film roll supporting device on the feed side of the machine.

Fig. 8 is a detail longitudinal section on the line 8--8 of Fig. 2.

Fig. 9 is a detail sectional view illustrating the construction of the main drive shaft, the section being transverse to the machine but longitudinal to the shaft. f Fig. 10 is a detail plan view of the die and the means for guidingthe film kacross the same.

Fig. 11 is a fragmentary longitudinal section taken on the line 11-11 of Fig. 5.

Fig. 12`is a detail front View of the punch with the face plate removed.

As here embodied the lperforating machine comprises briefly a punch head carrying a series of punch elements for perforating the film, and pilot elements for ensuring exact positioning thereof; a stripper for removing the film from the unches and pilots, a step by step shifter i or advancing the film to the punches, and film feeding and rewinding devices.-`

As here -shown the operating mechanism for the above devices is supported by and partially enclosed within, a casing 1 which 1s bolted on top of a suction box 2, the latter being supported on legs 3. Upon the top of this casing, midway between opposite ends thereof, is supported a die 4 which is adjustably securedIl toI the casing by cap screws 5 passing through slots 6 in exten'- sions 7 formed on opposite sides of the die. The die is formed with two rows of perforations 8 spaced as required for perforating the film. An opening 1 is formed in the top of the casing 1 under the die 4, a conduit- 1a extending fromthis opening toward one end of the casing and having a pipe 9 leading downwardly therefrom to the suction box2 for the purpose vof removing the punchings Clo-operating with this die is a punch which here comprises a ram element 10 the casing 1 and has an integral' forwardly projecting head 11 which overhangs the dle 4,' further reference to t-he Aparts carried by this head, being presently made. The ram` spiral gear 16 on another shaft 17 whichextends longitudinally of the casing 1 and serves to operate the film feeding and rrewinding devices. The opposite ends of this shaft extend through and are journaled in hollow arms 18, (Fig. 8) bolted on 'opposite sides 4of the casing 1, and have each fixed thereon aY spiral gear 19.which meshes with a like gear 20 on the lower end of a.` shaft .ends, (Fig. 1), the roller 25 which is on the feeding side of the machine having a smooth periphery while the roller 2T on the re-winding or take-up side of the machine 1s toothed.

- Co-operating with the rollers 26 and 2 are usual film guiding rollers 28, while a suction cleaning device 29 of ordinary construction through which the film passes is located immediately below the roller 2T, this suction device being connected by a pipe 30 with abcoupling member 3l on the side of the suction box 2' which is adapted to have a pipe from a suitable suction fan or other device connected thereto.

Upon the upper ends of the standards 22 are fixed the usual guide disks 32 for the roll of the film, the standard on the takeup side-having the usual arbor 32 driven by a belt 33 from the roller shaft 25, this belt being preferably made from a coiled wire. Upon thel standard 22 on the feed side of the machinel is carried a cylindrical arbor 34, (Figs. 1 and 7) pressed by a spring 34 against' the disk 32 thereby forming a slight frictional retardation to the rotation of the arbor. The roll of ilm is held upon this arbor by a. rod 35 which projects down in front of the disk 32 from ahead 35 having an integral pin 35al supported in the upper .end of the standard 22, a coiled spring 35'J being adapted to hold a V-projection 35c on the head 35 in yielding engagement with a complementary notch in the adjacent face of the standard and so yieldingly hold` the rod in position projecting across the face of the disk V32 while permitting it to be readily swung to one side when desired.

Formed in the punch head 11 is a chamber 11 (Figs. 2 and 12) in which are disposed a pair of blocks 36 and 36 which carry the punches 37 and the pilots 37 respectively` the pilots being somewhat longer than the punches so as to enter the previously made perforations in the lm before the punches reach the latter, the ends of the pilots being tapered to accommodate and correct any slight inaccuracy in positioning of the`film.

These blocks 36, 36 are secured in position by means of a bolt 38 passing through registering slots 38 in the blocks 36 and 36 and supported at opposite ends in cheek plates 11a forming the side walls of the. chamber 11. Disposed in thechamber 11 and resting on the blocks 36 and 36 are plates 39 which are engaged on their upper sides by screws 39 which are threaded downwardly through the head 11 to provide for vertical adjustment of the punches and Idirect the film on to the die.

pilots. The front wall of the chamber 11 may be formed by a removable face plate 11b.

Carried upon the top of the casing 1 on opposite sides of the die 4 are film guiding and supporting devices which aie in the main each of similar construction and arranged to prevent contact of the emulsified central portion of the upper surface of the film therewith. These film supporting and guiding devices comprise a pair of bed plates 40, 40 the former of which is on the entering or feed side of the machine and the latter on the discharge or take-up side. These plates are of substantially similar construction and provided with centre and side rows of film supporting rollers 41 which project slightly above the top surfaces of the plates. The plate 40 is ixedly secured on the casing 1 while. the plate 40 is mounted to have transverse adjustment thereon so as to properly To this end the plate 40 is xed on a. bracket 42 which is transversely slidable on the end of the casing 1 and has swiveled therein a screw 43 taking through a block 44 fixed to the end of the casing. A set screw 45 which passes through the end of the bracket 42 and is threaded into the block 44 serves to fix the bracket in adjusted positions.

Co-operating with the plates 40, 40 are upper guide members which are in the form of blocks 46, 46 slidable in frames 4T hinged at one side, as indicated generally at 48, to the casing 1. These blocks carry two rows of side rollers 49 in juxtapositionto the corresponding rows of rollers 41. these rollers 49 projecting slidably below the bottom faces of the blocks,'the centre portions of which may be longitudinally grooved as at 50. The blocks 46, 46 are slidably suspended from the undersides of the frames 4T, having fixed projections 51 which extend upwardly through the central openings of the frames and project freely over the sides of the latter. From these projections pins 52 extend outwardly, passing freely through the outer members of the frames, these -pins being encircled by coiled expansion springs 53 which bear between the frames and the projections 51 and normally urge the blocks 46, 46 inwardly toward the die 4.

The purpose of this slidable mounting of the blocks 46, 46 is to permit of their being moved outwardly to clear the punch head 11 when it is desired to swing them away from the plates 40, 40 for insertion of the film or other purposes, and means are preferably provided to ensure of the blocks being moved outwardly to clear the punch head before being swung back. As here shown these blocks carry fixed pins 55 which engage under fixed hooked elements 56, clearing the same when moved outwardly, the projections 51 being adapted to engage behind retaining posts 57 when the frames mitting the bar 58 to yield` to accommodate itself to slight variations in the width of the film.

The mechanism of the machine is all driven from a common main shaft which has already been referred to and which is illustrated in detail in Fig. 9. being of sectional construction arranged to permit of the ready removal of the stripping and shifting devices which are arranged as a single unit removably mounted in the casing 1. This shaft comprises a sleeve 60 having an integral eccentric 61 between its ends whereby it operates the ram '10 to which latter itis connected by means of a link 62 pivotally attached at Aits upper end to a pin 63 on the ram and having a strap or collar 64 on its lower end which encloses the eccentric 61, an anti-friction bearing 65 being interposed between the eccentric and collar. This sleeve 60 extends through and is-journaled inthe offset 13 before referred to, an anti-friction bearing 66 being provided at this point, a nut 67 being screwed upon a left hand screw threaded port-ion of the sleeve just outside the bearing 66, the sleeve 'terminating in a diminished portion 68 on whichis mounted a stepped pulley 69: This pulley is connected by a belt 70 with another stepped pulley 71 on the shaft of an electric motor 72 carried in a box 73 supported by the legs 3 under the suction box 2.

The forward end of the sleeve 60 engages, b means of transverse tongue and groove e ements 60', the worm pinion 15 which latter is supported on a front shaft section 75 which has formed integral thereon a series of cams for operating the stripper and shifter devices, the pinion 15 being connected to this shaft sectiony 75 for rotationv by transverse tongue and groove elements 75. The sleeve 60, shaft section 75, and pinion 15, are all locked together by means of a headed screw 75 which 1s entered from the rear end of the sleeve and is screwed into a tapped recess in the rear end of the section 75, the forward end of which is journaled in a removable plate 77 closing an opening vin the frontof the casing 1 and carrying the shifter and stripper de- VlCeS.

This block is fixed on the upper end of a vertically movable slide 82 having a dovetail engagement, as shown in Fig. 4. with a horizontally movable slide 83 guided in a guide 811 fixed on the plate 7 7 The slide 83 receives horizontal motion from a cam 85 on the shaft section 75 which engages between a pair of vertically faced projection 86 and 87 on the face of the slide 83, the latter projection serving as a guide for the slide 82. The slide 82 receives vertical motion from a second. cam 88 on the shaft section 75 which engages a roller 89 mounted near one end of a rocker lever 90 fulcrumed at itsopposite end as at 91 on a projection 92 from the plate 77. This lever is connected as at 93 to a block 91 slidable in a horizontal groove 95 in the slide 82. The cam' 88 bears upwardly against the roller 89- and thus moves the slide 82 upwardly, the latter being returned lor moved downwardly by a coiled expansion spring 96 bearing between the two elements 97 and 98 of a compound or telescopic link pivotally connected at its upper end to the free end of the lever 90 and at its lower end to the plate 77. As will be apparent from the foregoing the block 80 will have both a horizontal and a vertical movement imparted thereto, the cams 85 and 88 being so arranged as to have the two movements occur in'rotation. The ins 81, or claws as they are preferably deslgnated. are accommodated in longitudinal slots 99 of the bed plate 40', thevblock 46 being also grooved on its underside as at 100 to accommodate the upper ends of the claws which in their upper position project, as will be apparent. above the meetlng points of the lower and upper sets of rollers 41 and 49. It will also be understood of course that the parts will be, so arranged as to have the claws 81 register exactly with the perforations which have just been made in the film.

The film is stripped from the punches and pilots when the latter are raised, by means of a stripper comprising a plate having perforations 106 corresponding in arrangement to those of the die 4. this plate having an integral extension 107 fixed on the upper end of a slide-block 108 guided in a suitable recess 108 in the plate 77 The slideblock 108 is formed near its lower end with a projecting finger 109 which is engaged on its underside by a cam 110 on the shaft section 75, an ,expansion 'spring 111 which bears on the upper side of the finger 109 normally urgingV the stripper downward. Downward movement of the stripper is limited by means of an adjustment screw 112 which is threaded upwardly through the plate 77 into the recess 108', the screw 112 being preferably adjusted so as to prevent the weight ofthe stripper bearing down onl the lm. v

In the operation of the machine the unperforated roll of film is placed on the arbor 34, the film, which is indicated in dotted lines at X'in Fig. 1 is suitably led around the roller 28 and betweenv the bedplates 40, 40 `and blocks 46, 46', passing over the die 4, the end of the film being passed upwardly through the suction cleaner 29, around the roller 27, to the arbor .32. Upon the motor being started and the main shaft operated the rollers 26 and 27 and arbor 32 will be rotated causing the film to be unwound from-the arbor 34 and wound on the arbor 32. As-the punch head reciprocates the punches 37 will perforate the film, the pilots 37 entering the previous p erforations and accurately positioning the lm. While the punch head is raising the Acam 110 allows the stripper 105 to descend,

the claws 81 at the same time rising to engage in previously made perforations and when the punches and pilots have cleared the film the claws are moved horizontally I the proper distance, bringin the last made perforations under the pi ots, the claws dropping down as the punch head descends.

As will be apparent in this improved perforator the operating mechanism is located below the path of travel of the film so that danger of oil dropping on the latter is obviated. Also the operating mechanism is substantially all enclosed and out of the way while at the same time it is easily accessible,-

the stripper and shifting mechanism being readily removed as a unit by loosenlngscrew 76 and removing the bolts holding the plate 77 in place, the removal of this plate eX- posing the gears and shaft for operating the feed and take-up rollers 26 and 27. Also the punchings from the film are carried away so that danger of these punchings catching on fire is eliminated.

What I claim is as follows 1. Ina film perforat-or, a casing, a pair of vertically slidable elements located respectively at the rear and front of the casing, the rear element having a forwardly projecting' punch head formed onits upper end and the front element having a stripper member projecting rearwardlyfrom the vtop thereof under the said punch head, film advancing means carried by the casing between the said slidable elements, and aV shaft eX- tending through said casing from front to rear and operatively engaged with said slidable elements and said film advancing means.

2." In a film perforator, a casing, a pair of vertically slidable elements located respectively at the rear and front of said casing, a removable plate supporting the front element, a punch head and a Stripper member carried respectively by the rear and front elements, a shaft formed in two sections operatively engaged with the said slide elements, onesection of the shaft being mounted in the said removable plate and the other section being mounted in the main body of the casing.

3. In a film perforator, a casing, a-pair of vertically slidable elements located respectively at the rear and front 4of said casing, a

removable plate supporting the front element, a punch head and a stripper member carried respectively by the rear and front elements, a shaft formed in two sections lateral projection from said slide block, a-

cam engaging said projection and adapted to raise said slide block, and a spring bearing downwardly-on said projection to cause the stripper member to engage with the film.

5. In a film perforator, a casing, a removable plate on one side of said casing, a punch, film stripping and shifting devices mounted on said removable plate, a shaft for operating said punch and stripping and shifting devices, said shaft being formed in separable sections one of which is journaled in the said removable plate.

6. In a film perforator, a casing, a removable plate on one side of said casing, a punch, film stripping and shifting devices mounted on said removable` plate, a sha-ft for operating said punch and strip ing and Yshifting devices, said shaft being ormed in separable sections one of which is journaled in the said removable plate, the other section being hollow, and a screw inserted through the hollow section and engaging the first mentioned section to hold the two shaft sections together.

7. In a film perforator, a punch, and means for intermittently advancing the film under the punch comprising a shaft, a pair of cams on said shaft, a horizontally movable slide, a second slide adapted to move horizontally with the jrst slide and to have vertical movement independently thereof, and operative connections between the said slides and the respective cams.

8. In a film perforator, a punch, and means for intermittently advancing the film under the punch comprising a shaft, a pair of cams on said shaft, a horizontally movable slide, a second slide adapted to move' horizontally with the first slide and to have vertical movement independently thereof, and operative connections between the said slides and the respective cams, the operative connect-ion between theA rst slide and its cam comprising a pair of vertically faced projections on said slide projecting on opposite sides of said cam.

9. In a film erforator, a punch, and means for intermittently advancing the film under the punch comprising atshaft. a pair of cams on said shaft` a. horizontally movable slide, a second slide adapted to move horizontally with the hist slide and to have vertical movement independently thereof, and operative connections between the said slides and the respective cams, the operative v connection between the second slide and its cam including a rocker lever, and a. block carried by said lever engaging in al horizontal lgroove in said slide.

10. In a film perforator, a casing, a punch, film advancing means comprising a sectional shaft, a. pair of cams on said shaft, a horizontally movable. slide, a. second slide adapted to move horizont-ally with the first fslide and to have vert-ical movement independently thereof, means operatively connecting said slides and'` the respective cams, and a removable pla-te forming apart of said casing upon which said film advancing means is mounted.

11. In a film perforator, a punch, a die, a device for supporting and guiding the film while being. fed to the die, a casing on which 'said device is mounted, and means for adjusting said device transversely to the path of movement of the film, comprising abracket to which said device is fixed, and an adjusting screw swiveled in said bracket and threaded through a fixed part on the said casing.

12. In a film perforator, a punch, a die, a device for supporting and guiding the film while being fed to the die, said device including separate members adapted to engage the upper and lower surfaces of the 1m,-

and means hingedly mounting the upper members whereby they may be swung back from operative position.

13. In a film perforator, a die, a. punch, a

punch head, separate film' guiding members adapted to engage the upper and lower surfaces of the film', the upper members normally projecting under the said punch head, hinged frames in which said upper members are slidablyv mounted, and means locking said frames against swinging movement when the said upper members are in normal position.

14. In alm perforator, a die, a punch, a punch head, separate film guiding members adapted to engage the upper and lower surfaces of the film, the 1upper members normally projecting under the said punch head, hinged frames in which said upper members are slidably mounted, and means locking said frames against swinging movement when the said upper members are in normal position, said means being automatically releasable by sliding the said members in the said frames.

15. In a film perforator, a die, a punch, a punch/v head, separate film guiding members adapted to engage the upper and lower surfaces of the film, hinged frames in which the CHARLES R. CARLETON.

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