US2578064A

US2578064A - Contractile reel for paper cutting machines

Info

Publication number: US2578064A
Application number: US489A
Authority: US
Inventors: John M Hammond
Original assignee: HERMAN J MINKUS
Current assignee: HERMAN J MINKUS
Priority date: 1948-01-05
Filing date: 1948-01-05
Publication date: 1951-12-11
Anticipated expiration: 1968-12-11

Description

Dec. `11, 1951 y J. M. HAMMOND 2,578,064

CONTRACTILE REEL FOR PAPER CUTTING MACHINES Flevd Jan. 5, 1948 4 Sheets-Sheet 1 a l l I g! d! i IN VEN TOR. Jam/M. kw/vm@ irren/Vey Dec. 11, 1951 J. M. HAMMOND 2,578,064

CONTRACTILE REEL FOR PAPER lCUTTTNG MACHINES Filed Jan. 5, 1948 4 Sheets-Sheet 2 V 1N VEN TOR. JEH/VM HHM/110Mo Dec. 11', 1951 1 M HAMMOND 2,578,064

CONTRACTILE REEL FOR PAPER CUTTING MACHINES Filed Jan. 5, 1948 4 Sheets-Sheet 3 Dec. 11, 1951 J, M, HAMMOND 2,578,064

CONTRACTILE REEL FOR PAPER CUTTING MACHINES Filed Jan. 5, 194e 4 sheets-sheet 4 rrafm/y ,hand lever 5.

of frames 6, whichare connected'to support a Patented Dec. 1i, 17951 OFFICE y CONTRACTILE REEL FOR PAPER CUTTING MACHINES John M. Hammond, Glendale, Calif., assignor to Herman J. Minkus, Los Angeles,l Calif.

Application January 5, 1948, Serial No. 489

3 Claims. (Cl. 242-111) paper or the like is fed from a roll of material to a reel which is manually rotatable step by step yuniformly to advance the web from the roller into the line of travel of a cutting element. y

It is the object of the present invention to v'provide improved means for so advancing a web of paper to a reel. It is a further object to provide improved means for imparting step hy step rotation to said reel. Another object is to provide improved means for adjusting the size of this reel. A still further object is'to provide additional means for very fine adjustment of the reel to overcome and rectify slight inaccuracies in the initial adjustment thereof.

These objects and the many advantageous novel features ofthe invention will become apparent upon perusal of the following detailed description and reference is invited to the accompanying drawings in which preferred forms of the invention are illustrated. l

In the drawings: v

Fig. 1 is a front elevational view of a paper cutting machine embodying the invention;

Fig. 2 is an end view of the machine taken in the direction of the arrow 2 of Fig. 1;

Fig. 3 is a cross-sectional end view taken suhstantially on line 3-3 of Fig. 1. in the direction of the arrow 3;

Fig. 4 isfa cross-sectional end view of the ma chine taken on line 4-4 of Fig. 1 in the direction of the arrow 4; y

Fig. 5 is a fragmentary view of a portion of the left end of Fig. l, taken in the direction of the arrow 5 thereof;

Fig. 6 is a detail view, in the direction of the arrow 6 in Fig. 3, of certain important adjusting mechanism thereof which is hereinafter fully described;

j Fig. 'l is a fragmentary view of the paper cutting mechanism of the machine; land Fig. 8 is a detail view, on line 8-8 in Fig. 3, of another portion of the machine, the importance of which is hereinafter fully explained.

The device illustrated in the drawings includes a base I on which are mounted

end frames

2, 3 and a shaft 4 is hung for rotation in these frames. This shaft is, in a manner which will be described presently, connected for rotation by-a On the shaft is mounted a pair 2 plurality of bars Bparallel with and in spaced relation to the axis of the shaft. The frames 6 may be exactly alike and description of one pertains. for this reason, equally to the other. The bars 8 also may be identical and description thereof is, for this reason, limited to one of the bars. Each frame 6 is stelliform, including a hub from which extend three radially directed equidistantly spaced arms l. These arms are shaped to receive links 9, which latter are pivotally mounted on the bar 8 as indicated at ID, Il. A rod l5 extends through the frame 6 and it is noticed that this rod is provided with right and left screw threads engaging threaded perforations of the frames. A hub I6 is secured to this rod intermediate the frames and it is made with sockets IBa for receiving a tool by means of which rotation is imparted to the hub and the rod thereby to move the frames axially on the rod l5. A grooved sleeve I1 is secured to the shaft 4 and it is noticed that the groove of this sleeve is engaged by the huh i5, of the rod to maintain the latter axially in xed position relative to the shaft during the adjustment of the frames. It is furthermore to be noted that the axial adjustment of the frames is by the links- 9 translated into a radial movement of the bars 8 and it is important to note that the bars are during this radial movement, rigidly held against movement lengthwise thereof. This finely adjusted and rigidly held frame construction forms the most important feature of the invention.

The

end frames

2, 3 are shown grooved at the top to receive a shaft 20 to which are secured a pair of shouldered sleeves 2| for lengthwise adjustment thereon. These sleeves are designed to receive a roll of paper 22 or other material to be cut and the web 22a is extended over a roller 23 and then folded over the bars 8 substantially as indicated in Fig. 3.

It is'now noticed that rows 0f pins 24 project radially from the outer surfaces of the bars for the purpose of maintaining the web of material in position thereon during the operation of the machine. The bar assembly on the shaft 4 is here- 'to permit the pins freely to pass therethrough during rotations of the reel.

The mechanism by means of which the reel is rotated, includes anvarm 25, forming the inner end of the lever 5, is seated and this arm is roi tatably secured to a stub shaft`26 which extends attacca through the side frame 3 and is within the frame fitted with a relatively large gear wheel 21 in mesh with the gear pinion 28 of the shaft 4'. To the stub shaft 26 is rigidly secured a ratchet wheel 25a and a pawl 2Gb is hung on the arm 25 in position to engage and rotate the ratchet wheel and shaft each time the arm 25 is swuner downward. A relatively slow movement of the arm 25 is, in this manner, translated into a faster movement of the reel shaft.

A disk 38 is secured to the outer end of the shaft 4 and it is made with series of radial projections 3| corresponding in number tc the bars of the reel and equidistantly spaced about the periphery of the disk. A lever 32 is pivotally mounted on the side frame 3, at 3,3, and it is provided with a shoulder 322L which is engaged by one of the projections 3| to bring the reel to a stop in correct position at the end of each rotation thereof. A spring 34 urges this stop into position of engagement by the projection of the disc. A plate 3E is pivotally hlllg 0n the .side frame 3 in iront of the disk 3.0 and thisI plate is made with a perforation 36a within which a stud 31 of the arm 25 is mOllnted to ride thereby to control the extent of movement of the' arm. It is important to note that the perforation of this plate is so shaped that the plate is caused, to swine on. its Divot inte the position shown in dotted line in Fie- .2 at the end of each reciprocating movement of the arm 25, lt is also important to note that when the plate is lmoved into the elevated position shown in dotted outline, it engages the front end of the lever 32 thereby to swing this lever on its pivot suilieiently to diseneage'the stop `32a from the projection 3l of the disc against the tension of the spring 34. Oscillating movement of the lever is controlled and .limited by a stud 39 of the end frame seated in an elongated perforation 32c of the lever. As shown in Figs. l and 5, a sleeve 40 is made with an extension 40a and a stud 4| of the side frame 2 engages a perforation of this extension to lock the sleeve against rotation with the shaft 4. The portion of the sleeve opposite :the .extension 40a is shown slotted and .aseiew 42 extends through this slotted portion .for .the purpose o f drawing the sleeve tightly about the ,shaft thereby to provide sufficient frietion to maintain the shaft in the position it attains et the end of each hand lever operation The arm `25 is urged into elevated position by a Aspring 423 engaging a collar 4.4 of a rod 4.5, the upper end .of which is :seated `in a perforation l5.a of the .arm .and it is noticed that .the upward movement of the arm is limited by .the Plate .3.6 ins the end 32P of the lever y32.- AS the arm is manually lowered to rotate the reel. it is found that. the loer 8 at the front of the Inachine is caused to move upward and to pass directly under the Y.roller 2.3 during which move- .ment the eins 2.4 of ,the bar 'are caused to nene- .t-rate the web of material and so to maintain .this web .in -eonzeet relation to the yreel .during .the oper-,ation of the machine- As above ,stated andas best shown in Fig. l, the roller 23 is `nrovided with a series of grooves 2,3ll alignment with the pins 2.4 and .these grOOVes are deep enough to 'permit ,the pins freely -to pass through the grooves of the roller. A bar 4B is secured to rods 4'! which are seated vfor axial adjustment within lugs 48 of the side frames and .this bar as indieated in Fie, 3. positioned .directly in front of the bar ,8 to form a guard for protesti.on .or the operators ,hands Plate 5D is fitted with lugs 5I which are mounted for axial adjustment on rods 52 and the inner ends of the latter are rigidly seated in lugs 53 of the end plates. The rods 52 and plate 58 are, as best shown in Fig. 3, set at an angle parallel with a radial line through the pins 24 of the adjacent bar 8 a short distance below these Pinse lsnife 5.4 is plaeed on this plate and it is pivotally secured to one end thereof as indicated at 55. A stud 56 is secured to and freely rotatable relative to the knife and this stud is perforated to receive a rod 5l, the inner end of 'which is bent downward to ride in the perforation of an arm 58. The latter is mounted for rotation on and projects forward from a lug 59 of the end plate A pawl 60 is pivotally hung on the arm 25 as indicated at 6l and it is perforated at lla to ride on a stud 62 of the end frame. This pawl is made with a stop shoulder 601 which, while the operating handle is in elevated position, takes a position in front of the arm 58 butit' is to be noted that the pawl during the downwardmove rnent of the operating handle passes underthis arm causing the stop shoulder 6|)b to take a position behind and to clear the arm whereupon a spring 83 swings the pawl yupward into the position shown in Fig. 2 of engagement with the arm. When thereupon, the Yhand lever is returned to its elevated position, it is foundthat the arm is by its stop Bub swung on its pivot to draw the knife 54 past the underside of the pins 25, thereby to sever the web of material at this point. Attention is, at this time, directed to a slot 8a which is recessed into the bar 8 in the line of movement of the knife and which is provided for the purpose of affordingthe knife of freedom of movement without danger of colliding with the bar. Theslot 6|)it of the pawl is so shaped as to cause the stop llb to move downward during the return movement of the operating lever sufficiently to clear the arm 58 Vand so to permit a spring of the knife to return the knife and the arm to their original positions. The end of the web which has been severed from the body portion thereof, swings by vgravity downward to the position indicated at"22P in Fig. 3, in which it is held by the pins of the bar 8 at the -front of the machine in position to be manually removed by the operator. v

As above stated, theframes of the reel are axially -movable to increase or decreasethe size thereof to correspond to the size of the material to be cut and it is to be noted that it becomes necessary to move the roller 23 correspondingly. The roller is for this purpose., in Figs. l and 8, shown seated for rotation within bosses S1 which are secured to the end walls by means of screws 66 and the latter extend through vertically directed slots .of the end frames for vertical adljustment of the roller therein. It is important to note that the plate 5U is mounted for axial adjustment on the rods r52 in order correctly to adjust the position thereof in relation to the bars i 8 to correspond with the adjustmentI of the reel and .of ,the roller 23- roll of .material ,to be eilt 9.11 the machine oit-en .Carries advertising' metter printed'tlireon .and while stelo printed matter .is eaiiidistartly seated er1 .the material it may'soirletiries be felino difficult .donna the operation or Ythe msehine to maintain .the out in eorretrelatieo -.to the sheets. Qorreetion may, of estarse, be fnade by rotation Yof `.the roti 1.5 to .adinst'the site' of the reel `hat steh .assisteert .is 'not only 4las@rions but it may be found rather difficult to obtain a very fine adjustment for this purpose. In order to simplify such adjustment and so as to be able to maintain the machine in operation without serious delays, I have, as indicated in Fig. 6, shown a gauging strip placed on one of the bars 8. The strip is fastened to the bar by means vof screws or studs Il which ride in cam-shaped perforations 'IllEL of the strip and these perforations are shaped to advance the strip radially relative to the bar when it is lengthwise moved thereon sufficiently slightly to increase the size of the reel as may be required for adjustment thereof relative to the length of web to be cut. The strip is, for the purpose of facilitating lengthwise movement thereon at one end bent to form a lip 72b and the latter is conveniently placed for engagement by the fingers of the operator.

The roll of material should be held under slight pressure during the operation of the machine and a brake drum 'I3 is for this purpose secured to one end of the shaft 29. A lever 74 is pivotally hung on the end frame 3 adjacent this brake drum. The lever is shown fitted with a brake shoe contacting the periphery of the drum and a screw 18 is seated in threads at the opposite end of the lever for engagement with a stop of the end plate. Adjustment of this screw serves to apply friction to the brake drum as may be required for the proper operation of the machine, and it-is locked in adjusted position by means of a wing nut 11.

It is seen from the foregoing description that I have provided improved means for adjustably supporting and rigidly maintaining the pin bars of the device in adjusted position on the machine. It is also important to note that the reel rotating mechanism is designed to advance the reel with great precision so as to cause the end of the web to be correctly positioned relative to the knife. Also that sufficient friction is applied to the roll of material to maintain the web taut at all times.

Another important feature is the means for ne adjustment of the size of the reel by movement of the plate 10 on one of the bars 8 thereof. But While I have described a preferred form of the invention, I may embody modifications of the various features thereof within the scope of the claims hereto appended.

I claim:

1. In a device for cutting the web from a roll of material into sheets of predetermined uniform length, a shaft, a reel on said shaft including a series of equidistant bars in parallel relation to the shaft, means for imparting step by step movement to the shaft and reel, means for uniformly adjusting the bars of said reel radially relative to the shaft, vertically disposed guides, a roller mounted in said guides for vertical adjustment c therein to position the roller adjacent the path of travel of said bars, the web of material from said material roll being bent over said roller and over the said bars, pins radially projecting from the bars, and grooves in said roller in alignment with said pins providing clearance for free passage of the pins therethrough, the pins penetrating the web as they pass through said grooves thereby to retain the web in position on the reel.

2. In a device for cutting the web from a roll of material into sheets of predetermined uniform length, a shaft, a reel on said shaft including a series of equidistant bars in parallel relation to the shaft, means for imparting step by step movement to the shaft and reel, means for uniformly adjusting the bars of said reel radially relative to the shaft, and means movable on one of said bars to project beyond the peripheral surface thereof for very fine adjustment of the reel to correct inaccuracies in the initial adjustment thereof.

3. In a device for cutting the web from a roll of material into sheets of predetermined uniform length, a shaft, a reel on said shaft including a series of equidistant bars in parallel relation to the shaft, means for imparting step by step movement to the shaft and reel, means for uniformly adjusting the bars of said reel radially relative to the shaft, studs on one side of one of said bars, and a strip of material having cam slots therein receiving said studs, the strip being lengthwise movable on said studs along the bar to cause the outer edge thereof slightly to project beyond the peripheral surface of the bar thereby to provide more perfect adjustment of the reel.

JOHN M. HAMMOND.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 167,788 Richmond et al. Sept. 14, 1875 307,372 Atherton Oct. 28, 1884 442,309 Diamond et al Dec. 9, 1890 '771,405 Whittington Q.-- Oct. 4, 1904 1,443,450 Yurcich Jan. 30, 1923 1,534,496 Biggar Apr. 21, 1925 1,652,093 Coombes Dec. 6, 1927 1,668,545 Boraks May 8, 1928 1,741,635 Krause et al Dec. 31, 1929 2,087,673 'Lisberg July 20, 1937 2,202,883 Yoder June 4, 1940 2,298,360 Fitch Oct. 13, 1942 2,487,396 Summers Nov. 8, 1949