US819718A - Paper-cutting machine. - Google Patents

Description

PATENTED MAY 8, 1906.

A. BREDENBERG. PAPER CUTTING MACHINE.

APPLICATION FILED 001 s, 1904..

2 SHEETSSHEBT 1,

\ ,f A ,1 1, MANN v11u w A '1 PATENTED MAY 8, 1906.

A. BREDENBERG.

PAPER CUTTING MACHINE.

APPLICATION FILED 0GT.8,1904.

- 2 SHEETS-SHEET 2 INVENTOR W 7 MMW ATTORNEY UNITED srairnsmrnnr canon.

ALFRED eREDhNisERc, ta CHAMPLAIN, EWYoRK, ASSIGNOR OF ONE-n "HAL'F'TO THE SHERIDAN. iRo wee s, IAcoaPoRAT oN or New;

' YORK, AND ONE-HALF *ro- T. W. & c. B. SHERIDAN coMPANY, A coa- PORAIION oF NEWXORK;

asse-CUTTING MACHINE:

To (Hawk/m, it may concern: v

Be it known that I, ALFRED BREDENBERG,

a citizen of the United States, and a resident of Champlain, Clinton county, New York,

have invented certain new and useful Improvements in Paper-Cutting Machines, of

' which the following is a specification.

My invention relates topapencuttmgmachines, and more particularly to the mechan- [o ism employed in such machines for clamping and holding the paper during the time that the cutter is operated thereon.

An object of my invention is toprovide an automatically-actuated clamp-operating mechanism which may be easily and quickly adjusted to exert different degrees ofclamp ing force to suit different sizes and characters ofstock and also to provide an automatic allyactuated clamp 7 operating mechanism which for a given adjustment will always operate to apply the same clamping force.

A further object of my invention is to provide with an automatically-actuated clampoperating mechanisnra manually-operated 2-5 clamp-actuating mechanism which is normally inoperative relation and may be operated either separately or in conjunction with the automatic clamp-actuating mechanism,

so that the clamping force exerted by the au- 0 tomatic clamp-actuating mechanism may be increased by the manually-operated clampactuating mechanism at the will of the operator and quickly'so increased without'inter-.

v 5 My invention consists in the novel parts,

improvements, and combinations herein shown and described.

In the accompanying drawings, which are referred to herein and form a part hereof, is

illustrated one embodiment of my invention,

the same serving in connection with the dethe invention.

T Patented May 8,

scription herein to a in the principles'of.

Of the drawings, Figure 1" is a front eleva tion of a paper-cutting machine constructed in accordance with 'my"'invention," certain parts of the mechanism being shown in section to illustrate more clear] the construc tion th'ereofl, 2 is a vertical central Ion-f gitudinal section of the machine shown in struction. 5 is a'trans'verse section of the same, taken on' the line 5 5 of Fig. Land looking in thedir ectio'n of the arrows; and

and 7 are side elevations illustrating- Figs. 6 details.

Referring now in detail to the particularconstruction illustrated by way of example in the drawings, the same wlll'he seen to consist of 'a pair of side frames 1 and 2, sui'tabl connected by girders 3 and {t and bya Wor supporting table 5, which parts may be of the ordinary construction. The cuttin'g'mechan lsm may be constructed-and operated in any ;6o Fig. 1. Fig. 3is' an end elevation of the same. Fig.1'4 isa vertical central section, on 'anen larg'ed scale, illustrating a detail of the 00 1- tion with a pair of cranks arranged on the opposite ends of the main shaft 7 and moved 1n the direction of ltslength to effect a shear cut a by means of a link 8,-pivotally connected at one end to the girder 4 and at the other end to thecutter-bar 6. The crank-shaft 7 may be driven in any suitable way. As shown, one'of the cranks is formed on a gear-wheel 9, which meshes with a pinion 10, fixed to one end of 'a short shaft journaled in the side frame 2 andprovided at its inner end with a gear-wheel 11, arranged to mesh with a pinion on the driving-shaft 12. The shaft 12 may be driven in any suitable way, as by means of tight and loose pulleys 13, and said shaft is preferably also pro vided with a heavy fly-wheel 14 toovercome any sudden strains to which the mechanism is subjected and insure evenness of operation.

The clamp by which the paper is firmly held on the table during the cutting operation maybe of any suitable construction. As

I oo

1 'tion. Preferably an /clamp bar is provided at or near each end with a depending rod 16, each of said rods being provided at its lower end with a rack, as shown in Fig. 2, which is arranged to mesh with a pinion on a clamp-actuating shaft '17. suitably journaled at its opposite ends in the side frames 1 and 2. So far as some of the features 'of my invention are concerned the clamp {actuating shaft 17 maybe driven from the power-shaft 12 by any suitable'mechanism, permitting the'shaft to'be" connected and disconnected intermittently or temporarily at will and permitting a slip or lost motion'between the clamp-shaft and the driving-shaft when theclamp-bar shall have been brought down upon the paper to be cut with a suitable force. Preferably, however, and in accordance with one feature of my invention a friction-operated driving o mechanism is mounted. directly on the shaft 17. In accordance with the "construction shown a driving-gear 18 is loosely journaled on the shaft 17, and on the] opposite sides of this gear is arranged a pair of is'ks 19 and. 20, the former being rigidly fixed on :the shaft 17 and the latter being splined'thereon, so as to rotate therewith, but capable of slight longi tudinal movement thereon, Preferably and as shown these disks areiconstructed to make frictional contact with the opposite sides of the web ofthe driving-gear 18, suitable friction material being arran ed between the nee-- tallic surfaces to provi e a mor e effective and uniform frictional engagement thereofj thereof.

So far as some of thefeatures of my inven 'tion are concerned any suitable driving connection may be provided between the gear 18 and the drivingshaft v12. Preferably,

however, and as shown'the gear 18 is arranged to mesh directly with the pinion '10, by which the crank driving-gear 9 is actuated. So far as some of the features of my invention are concerned, moreover, any suitable .means 5 may be provided for actuating the slidin friction-disk 20 so as to effect a frictiona driving connection between the gear 18 and e the shaft whenever it is desired to operate the paper-clamp by power. In accordance with one feature of my invention, however, the

frictional connection between the driving mechanism and the shaft 17 is effected by connections includinga spring which serves to appl y a predetermined amount of force .to sa d frictional connections, and preferably as shown, however, the

' earned by a collar fixed on the shaft 17,

said connections include also means whereby the'force of the spring may be readily adjusted to vary the amount of force w th which the said frictional engagement 1s effected. In accordance with the particular construct on illustrated in the drawings the friction dlsk 2Oisforced v into engagement- ;W1i7h the gear 18, so'as to clamp t e web of'the latter \between the disks 19 and20 by means'of a air of oppositely-arranged cam-levers 21' an 2% erably by means permitting longitudina adjustment of the levers to make provision for wear that may occur between the gear an the friction-disks. construction shown also the cam ldvers 21' and 22 are actuated by means of a conesha ed collar 23, arranged to slide longitudi n al y on the shaft 17 and having operative connection with a lever 24, fixedvat one end to a stud 25,projecting from the side frame 2, and connected at its opposite-end to a rod 26, mounted to, slide longitudinally in the side frames 1 and'2; In accordance with the conalongliillie shaft,f'so as the ta 'n u 0 any 3 g p d 80' In accordance with the struction shown also the rod 26 is moved in the direction required to move the disk 20 into frictional engagement with the gear 18 by means rounding the rod-26 and confine between of a compression-sprin 27 surthe side frame 2 and a collar 28 on the rod I 26. For the purplose of varying readily the compression of t e spring 27, and thereby varying. the

disk 20 is brought into contact with the gear "18,-the collar 28 is threaded onto the rod 26 and is provided, when desired, with means to facilitate its being turned on the rod, such as a series of pin-holes adapted to receive a pin-wrench.

Any suitable means may be provided to move the rod 26 outwardly against the force of the spring 27,so as to release the frictional connection between the clamp actuating shaft 17 and its driving-gear 18. In accordance with the preferred construction and as shown the crank-shaft 7 is provided with a cam 29, arranged to make contact with one end of a bell-crank lever 30, pivotally mounted on a suitable bracket fixed to the side force with which the frictionframe 2. The opposite arm of the lever 30 is connected by a link 31 (clearly shown in Fig. 7) with a pivot-block 32, fixed on the rod 26. As is usual iIlPOWgT-(ll'iVQh cutting-machines, a clutch. mechanism is provided between the driving-shaft 12 and the gearing by which the cutter-bar, i riven, as indicated at 33 in Fig. 1, and, as usual, also this clutch mechanism is operated to connect the gearing with the power-shaft by a handle 34 and is automaticallyv disconnected by a suitable trip device '35, mounted on the cutter-operatmg crank-shaft 7 in such position as to stop the machine when the cutter-bar is at the upward limit of its stroke. Thecam 29, which starts controls the clamp-actuating mechanism, is so adjusted on the shaft 7 that when the latter is at rest the drivinggear 18 is discon nected from the clamp-actuating shaft 17 but as soon as the shaft 7 starts to rotate the moved at the grailually-accelerating speed.

resulting from the curved paths of the cutteractuating cranks. The clamp-bar will continue to move down until it meets the pile of paper and compresses the same with such force as to cause the gear 18 to slip between the friction-disks 19 and 20, and as the ear 18 continues to rotate the clamping force will be maintained until the cutter-bar completes its downward movement. The formof the cam 29 is such that at this instant the lever 30 will be operated to release the frictional connection between. the gear 18 and the clamp actuating shaft 17. Any suitable means may be provided for returning the clamp to its normal inoperative position. 'As shown, the shaft 17 is provided near the center of the machine with a drum 36, which is connected by a flexible strap 37 with a Weight 38.

It has been found that stock of certain classes requires a greater clamping force than can readily be applied by a friction-operatedclamp-actuating mechanism or that can be applied by a power-driven clamp without putting an undue strain upon the driving mechanism or otherwise interfering with the proper or efficient operation of the machine. In accordance with one feature of my inventi'on, therefore, I have provided in the machine means whereby the clamping force applied by the automatically-operated orpowerdriven clamp-actuating mechanism may be effectively augmented or increased manually and at the will of the operator. The mechanism whereby this is accomplished may be varied widely in construction and arrangement without departing from the main principles of this feature of the invention. In accordance with the preferred construction, however, the manually-imcratml clamp-actuating mechanism so constructed that it may be used either in conjunction with the automatically-operated clamp-actuating mechamsm or separately, and preferably also the manually-opcrated clampactua.ting mechanism 1s so constriuJ-tcd that no special manipulation of the mcchanismsuch for exampie, as the operation of a clutch-is required to bring the said mechanism into operation. In accordance with the particular embodiment of this feature of the invention illus trated a worm-wheel 39 is loosely mounted in the clanip-actuating shaft 17 and preferably at the opposite endfrom that on which the driving-gear and friction-disks are located. For the purpose of driving the wormgear 39 a worm 40 is employed, the same being fixed on a shaft 41, suitably 1ourmtled in bearings fixed on the side frame 1 and provided with a hand-wheel 42. As shown, a wheel 43, having internal ratchet-teeth, is fixed on the shaft 17 adjacent to the wormwheel 39, and the worm-wheel is provided with a spring-held pawl 44,- which is so located as to cause the wheel 43 and the shaft 17 to turn with the worm 39 when the latter is moved in a direction to move the clamp 15 downwardly. By reason of this construction it will be seen that the clamp-bin is free to be moved downwardly at any time by means of the automatically-operate:l clamp-actuating mechanism, and that by simply turning the hand-wheel 42 in the proper direction the shaft 17 may be driven with great force in the same direetion as it is driven by the automatically-operated mechanism, and that the force of the manually-actuatedworm-gear may be thus added. to that of the automatically-operated mechanism almost instantly or as soon as the pawl +14 may be brought into engagement with one of the ratchet-- teeth of the wheel 43.

In order that the nmrmally-operated clamp-actuating mechanism may not interfere with the automatic return of the clampbar after the cutting operation is complete, means are preferably provided for effecting a normal disengagement between the hand operated clamp-actuating mechanism and the clamp. This may be effected in various ways. In accordance with the construction shown means are provided for holding the pawl 44 normally out of engagement-with the teeth of the wheel .43. This is accomplished by connecting the pawl 44 with an arm 45, arranged to project in an outward direction at the-sideicf the wheel 39,:1nd a step 4.6 is fixed on the side frame 1 in the path of said arm 45. It follows from this construction that when the worm-wheel 39 is brought to a certain position the wheel 43 and shaft 17 will be free to turn in either direction independently of the worm-wheel. The same act of turning the hand-wheel 42, luiwevcr, in a direction to move the clamp 15 ('lmvnwa-rd will serve to effect innmdiately a ennecti'on between the worm-wheel 39 and the clamp. It will be seen, moreover, that -to release the clamp from the manually-operated mechanism it will be only necessary to turn the hand-wheel 4-2 back the short distance through which it was turned forward. or in a direction to increase the clamping nipulation of any part of the machine other than the mere actuation of the said mechanism itself. There is no time lost in connecting and disconnecting the manually-operated mechanism, and there is no danger of breaking or disarranging-the parts by reason of neglect on the part of the operator in not disconnecting, as there might be if he were required to connect or disconnect such mechanism.

For the purpose of quickly bringing the clamp-bar down into contact with the surface of the pa or" to aid in properly locating the latter undbr the cutter means maybe provided, as is usual in this class of machines, whereby the clamp may be actuated by a foot-lever. In the particular machine shown in the drawings the lower ends of the rod 16 are connected, by means of suitable links and arms, to a rock-shaft 47, having a centrally arranged foot lever 48 projecting therefrom to a convenient point near the front of the machine. It is to be noted that this mechanism is provided to efiect a quick movement of the clamp and aimovement,

. therefore, which is necessarily accompanied by a little force and not sufficient force to increase the effective clamping force.mate

rially, except possibly under extreme conditions, where little clamping force is required, under which conditions the clamping force produced by the automatically -operated mechanism Will be ample and will not require augmentation. It is to be understood, therefore, that such clamp-actuating mechanism as that exemplified by the treadle 48 and connections described is not included in the expression manuallyoperated clamp ac tuating mechanism as herein used.

The operation of. the machine having been fullyset forth in connection with the description of the construction thereof will require no further description.

My invention in its broader aspects is not limited to the particular construction shown in the drawings and herein described, as many chan es may be made in the details thereof witlicut departing from the main principles of the invention and without sac rificing its chief advantages,

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is I 1. In a paper-cutting machine, the combination of a clamp,'connections'including a shaft for operating said clamp, a driving- Wheel loosely journaled on said shaft and forming one member of a friction driving connection, means forming another member of said friction driving connection confined to rotate with said shaft, a springforforcing' said friction driving connections into operative engagement, and means for dlsengaglng said friction driving connections.

2. In a paper-cutting machine, the combination of a clam means including a shaft foroperating sai loosely journaled on said shaft, a friction driving connection between said wheel and said shaft, a springfor forcing said friction driving connections into operativeengagement, means whereby the force of sald s r1ng maybe readily varied, and means for mengagin said driving connections.

3'; n a paper cutting machine, the combination of a clamp, means including a shaft for operating said clamp, a driving-wheel loosely journaled on said shaft, a friction driving connection between said wheel and said shaft, :1. spring for forcing said friction driving connections into operative engagement, means whereby the force of said spring maybe readily varied, means for disengaging said driving connections, and means independent of said gear-and friction driving connections for returning the clamp. v

4. In apa er-cutting machine, the combination of a 0 amp, rack-bars carried by said clamp, a shaft having pinions meshing with said rack-bars, a gear loosely journal'ed on said shaft, a friction driving'connection be-- tween said gear and said shaft, a spring for forcing said friction driving connection intooperative "engagement, and means for automatically controlling the action of said springi 5. n a paper-cutting machine, the combination of a clamp, means including a shaft for o crating said clamp, a driving-wheel loose yj ournaled on'v said shaft, friction driving connections between said wheel and'said shaft, a plurality of oppositely-arranged levers adjustably mounted on said shaft .for actuating said friction driving connections, a spring for actuating said levers, and means for automatically controlling the action of said spring. Y

6. In a paper-cutting machine, the combination of a clamp, means includin a shaft for operating said clamp, a driving-w eel loosely journaled on said shaft, friction driving connections between said wheel and said shaft, a plurality of oppositelyarranged levers adjustably mounted on said shaft for actuating said friction driving connections, a spring for actuating said levers, means for automatically controlling the action of said spring, and means independent of said driving-wheel and friction driving connections for returning the clamp.

7. In a paper-cutting machine, the combination, of a clamp, a pair of racks connected with the opposite ends of said clamp, ashaft having pinions meshing with said racks, a gear loosely journaled on said shaft, a pair of clamp, a driving-wheel I disks adapted to engage the opposite sides of said gear to form a friction driving connection between said gear and the shaft, a plurality of oppositely-arranged levers adjustablv mountedon said shaft for operating said friction-disks, and means for operating 's'aidlevera said ear to form a friction (rivmg connection-be-tween said gear and the shaft, a plu rality of oppositely-arranged levers ad ustably mounted on said shaft for oper'atm said friction-disks, automatically-controlle means for operating said levers, and means independent of said gear and friction driving connections for returning the clamp.

9; In a pa er-cutting machine, the combination of a c amp, a plurality of clam -ac tuating devices adapted to apply e ective clamping force, and means w ereby two of said devices may be operated independently of each other or both of them operated together.

IOI In a paper-cutting machine, thecombination of automatically-operated clamp actuating devices, manually-operated clampactuating devices operative independent y of said autoniatically-operated clam actuating devices and adapted to apply e ective clamping force, and means whereby the manually-operated clamp-actuating devices may be operated in conjunction with the poweroperatedclamp-actuating devices.

11. In a paper-cuttim machine, the combination of automatica lly-operated clampactuating devices, manually-operated clam actuating devices operative independenty of said automatically-operated clam -actuating devices and adapted to appjy e ective clamping force, and means where y the manually-operated clamp-actuating devices may be operated either singly or in conjunction with the automatically-operated clamp-actuating devices.

12. In a paper-cutting machine, the combination of a clamp, automatically-operated clamp-actuating devices, manually-operated clamp-actuating devices adapted to apply effective clamping force, and means whereby either of said clamp-actuating devices may be operated either singly or in conjunction With the other clamp-actuating device.

13. In a aper-cuttin machine, the combination o automatic ily-operated clampactua-ting devices, manually-operated clam actuating devices operative independently ofsaid automatically-operated clamp-actuating devices and including a worm and worm-wheel and connections between the operated in conjunction with the said auto matic clamp-actuating devices, said means being constructed so as not to interfere with the return movement of the clamp when the manually-operated clamp-actuating devices are not operated.

15. In a paper-cutting machine, the combination of a clamp, means including a shaft for operating said clamp, automatically-0perated clamp-actuating devices connected with said shaft, manually-operated clampactuating devices operative independent y of said automatically-operating clamp-actuating devices, said manually-operated clampactuating devices including a worm-wheel loosely mounted on said shaft, a hand-wheel and worm for driving said worm-wheel, and connections between said worm-wheel and said shaft, permitting free movement of the shaft in one direction independent of said worm-wheel but preventing movement of the shaft in the op osite direction with relation to the worm-w eel.

16. In a paper-cutting machine, the combination of a clamp, means including a shaft for operating said clamp, automatically-operated clamp-actuating devices connected with said shaft, manually-operated clam actuating devices operative independent y of said automatically-operating clamp-actuating devices, said manually-opeiated clampactuating devices including a worm-Wheel loosely mounted on said shaft,-a hand-wheel and worm for driving said worm-wheel, and connections between said worm-Wheel and said shaft, permitting free movement of the shaft in one direction independent of said Worm-wheel but preventing movement of the shaft in the op osite direction with relation to the worm-w ieel, and means whereby the shaft is permitted to turn freely in either direction with relation to the worm-Wheel in one position of the latter.

In testimony whereofl have signed my name to this specification in the presence. of

two subscribing witnesses.

ALFRED BREDEN B ERG.

YVitnesses:

JAS. WERIN, Jr., GEO. H. CLARK.

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