US1573903A - Press - Google Patents

Description

Feb. 23 192 1,573,903

A. BATES ET AL PRESS Filed May 19, 1920 2 Sheets-Sheet 1 I Flg 3 0 Fig.1.

//v l/E/V 7-055 4* M aw;

A. BATES ET AL Feb. 23 ,1926.

mass

Filed May 19, 1920 2 Sheets-Sheet 2 l//\/ TU Maw Patented Feb. 23, 1926.

UNITED STATEEE PATENT OFFlCE.

ARTHUR, BATES AND JOSEPH GOULDBOURN, OF LEICESTER, ENGLAND, ASSIGNORS TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A COR- POEA'IION OF NEW JERSEY.

PRESS.

Application filed May 19, 1920. Serial No. 382,550.

To all whom it may concern:

Be it known that we, ARTHUR Barns and Josnrn GoULnBoUcN, subjects of the King of England, residing at Leicester, Leicestershire, England, have invented certain Improvements in Presses, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for operating on sheet material and more particularly to presses of the class used in cutting sheet material by the employment oi freely movable dies, a typical example of which is disclosed in United States Letters Patent No. 921,503, granted May 11, 1909, on application of Arthur Bates. It is to be understood, however, that the invention is applicable to classes of machines other than that illustrated in said patent.

Characterist-ically, machines of the type referred to in the foregoin statement have been provided with a single revolution clutch mechanism, thus eliminating the possibility of injury to the work or to the operator through an unexpected repetition of the pressure applying operation. However, in operating upon certain classes of materials notably tough or thick leathers or other fabrics, it is frequently necessary to employ a plurality elf-pressure applying operations, preferably in rapid succession, in order to secure clean cutting of the material.

In view of the above, it is an object of the invention to provide an improved press which will retain all the numerous advantages of the commercial form of machines as constructed and arranged that the extent of movement of a manually'operable starting levertletermines whether one or more than one pressure applying operation is to take place.

In the illustrative machine, means is provided under the control of the ope 'ator for determining the extent of movement of the starting lever in accordance with the decision of the operator as to the number of pressure applying operations to be performed by the machine at a given time. Conveniently the means described comprises a plunger mounted in the handle oi the starting lever and readily operable by a finger of the hand which grasps the handle.

In another aspect the invention comprises a machine wherein the clutch mechanism may be so operated as to providefor a plurality of pressure applying operations upon a single unsustained actuation of the starting means, and in which there is provision for preventing that operation of the brake which normally occurs at the end of one revolution of the shaft when a plurality of revolutions is to take place, means being preferably provided for applying the brake to the shaft at the end of a predetermined plurality of revolutions of the shaft.

From this viewpoint the invention comprises means for connecting a shaft with the source of power and means for preventing the application of the brake at the end oi a single revolution of the shaft when the power has been connected for a predetermined plurality of revolutions of the shaft by a single unsustained actuation of the starting means. In the preferred construction means-is provided under the control of the operator for preventing the application of the brake under certain conditions and there is provided also other means for automatically applying the brake at the time the power means is disconnected from the shaft at the end of a predetermined number (it revolutions of the latter. Conveniently the clutch controlling means whichu'ould uormally operate to disconnect the clutch at the end of a single revolution of the shatt is locked in inoperative position by means under the control of the operator, and in order that the number of revolutions may be predetermined, means is provided for automatically withdrawing the locking means so that the clutch controlling means laccomes operative to disconnect the clutch from the shaft at the proper time.

Other features of the construction and other combii'iations of parts will be described in the following detailed description and pointed out in the claims.

In the drawings Figure 1 is a view in side elevation of one embodiment of the invention;

Fig. 2 is a side elevation partly in section of the clutch and brake mechanisms;

Fig. 3 gives two views of the handle on the starting lever, one in section and the other a side view taken from a position at right angles to that of the sectional view; and

Figs. 4, 5 and 6 are detail views of the clutch.

In the illustrative machine there is shown a work supporting bed 4 supported on the frame 6 of the machine and designed for cooperation with a presser member 8 carried by a post 10 for swinging movement over the bed so that the presser member may operate upon work in whatever position it may be placed upon the bet. It Will understood, therefore, that the post 10 1s rotatably mounted in its bearings 12 and 14 so that the presser member 8 may be oscillated in the manner described. in addition, the post 10 is also mounted for reciprocation in its bearings so as to provide for moving the presser member toward and from work on the bed during pressure applying operations. For reciprocating the post, connections are provided between the main shaft 16 and the post comprising an eccentric strap 18 connected by a link 20 to a block 22 screw threaded into the lower end of the post, a ball bearing 24 being provided between the block 22 and a shoul er on the link 20 so that the post may be. turned with a minimum of friction. Connected to the eccentric strap 18 by means of a pivot pin 26 is a rod 28, the lower end of which is in turn pivoted to a lever 30 mounted for rockin' movement on the pivot 32 in the frame of the machine. The free arm of the lever is connected to operate a brake which, in the illustrative construction, is a brake band 34 surrounding a brake flange 36 fixedly at tached to the shaft 16., It will be understood that as the post 10, together with the press I er arm. moves upwardly the brake band is gradually applied by the operation of the lever 30 and that the bralte band is fully applied to brake the shaft when the presser member arrives at its uppermost position of rest. The machine so far described is commonly known as the clicking machineand, if desired, reference may be had to the said patent for a more complete disclosure of the construction and mode of operation of an early type of the commercial clicking ma chine.

Whereas in the clicking machine as here'- tofore constructed a single actuation of the starting mechanism results in a single revolution of the main shaft accompanied by one pressure applying operation of the presser member WdlCll descends and then returns to its position of rest, the present invention provides means under the control of the operator for causing a single pressure applying operation or a predetermined plurality of pressure applying operations at the will of the operator upon a single actuation of the starting means. In the illustrative construction the clutch mechanism for connecting the power pulley 38 to the shaft 16 comprises a wedge member 40 (Figs. 2 and 5) pivoted on a stub shaft 42 and having a wedge or cam end portion 44 designed to control a bolt or plunger 46 in such a way that upon withdrawal of the wedge 44, the plunger 46 is actuated by a spring 47 (l ig, 5) to connect the power pulley to the shaft, the said wedge portion 44 operating to move the bolt or plunger 46 in the opposite direction normally at the end of a single revolution of the pulley, thus unclutching the pulley from the shaft. As shown, the plunger 46 is connected by an arm 49 to turn the screw 51 to effect an expansion or contraction of the ring 53 carried by the stationary clutch member 55, the ring upon expansion engaging the flange 57 of the loose pulley 38. For a more complete disclosure of the clutch mechanism, reference should be had to Patent No. 1,011,903, granted December 19, 1911 upon an application filed by Arthur Bates. As shown the wedge member 40 is operated to withdraw the cam or wedge portion 44 from operative position by means of a hand lever 146 (Fig. 1) mounted at 48 on the frame of the machine and connected to the wedge member 40 by means which provides for the release of the wedge member so that it may drop back into operative position to unclutch the power pulley atthe end ofa single revolution of the latter. These connections comprise a rod I pivoted at 52 to the rear end of the lever 146 and at its lower end to a link 54 which turns freely about a stub sha t 42 and carries a latch plate 56 normally engaged under another latch plate 58 at the upper end of a latch member 60 pivoted at 62 on the wedge member 40, a spring 64 being provided to hold the two latch plates 56 and 58 yieldingly in engagement with each other. T he hand lever 14-6 is movable with the lat orally swinging presser member 8, this construction being shown also in said Patent No. 921,503. r

The operation of this part of the inecha nism may be briefly described as follows Jpon operating the startii'i'g lever 146 by depressing the handle 66 thereon, the link is lifted and carries with it the latch 60 because of the engagement of the latch plate underneath the latch plate o 3, t V i hate. It rill he understmnl of the hitch 50 opeg to lift l the parts if; such that the t 1e earn or r a is actuated in the eeond 4e W thdrawn from Contact with the 1e puller and that it. is not 46, thus permit 7 of eetirelr u, the hesrinuihe ot' the T 'pulley to th Very ea in Erohition Jet-twee the 1111mm 'ot the revolution or ofer held nlerr l an ep- 68 on the 3x he 9 time dorm ,r .flll'il the ortion 70 o. t L ees ,t es l)(--,'U11tl the roller 32 latch to more it 1- p unt l in the direction iutlieeted hr the l ateh plate is tispleeed end disenpag arrow] It he ole" that the cont 23w:- irom the let h ph e "6 lt hen the 'beek so than,

ot the shaft may take PlfiCQ or d, therefore,

end a at e tion and arrei'lgement o t the de:-;erihez place the Wedge member 40 promptly t op is such that one or u plur litv .L l q the Wedge or com portio "ingr operations will to low rests in 2L position to engage the bolt to m ned operation of the shut wrthdrz-l v the same at the end of one reroluhine di'ters in t '5 to tion of the pulley. wel l'rz or In order that more than one reroiution I ope "e,- in the lllitfi'ltiTtQr-i to w de, ti unstained operary to obtain 1 machine the write is held deto the nei'u- 90 a pluraiit; I

s provided means for locking the er it) in raised posit-ion so that. used at the end of one revolution. This means in the illustrative eonstruetion comprises it look lllGllllJGl pivoted on at a carried by the e; o machine frame at eetion 76 hrzzlg: designed to en; i r e of an arm prior illiltfllliltn;

:diy secured to the Wedge member end oi eat-h r It will he clear that it the sfltrtin lerer 1&6 e'i'eix the shaft is more than one pressure applying operation,

11:; of til 9 ted at the it, howu pi l is depressed for enough he lint: will he of revolutions it h brake oar *ied up to suel it I :nee that. the arm should not of the first 78 will be displaced to tile left in 2 to revel. ition. totaled for a position which Will permit the projection jrerentin; hruim un- 76 drop from the upper end of the arm til film UHQlP-t l A P W471 1 100 cngngg id surface of the arm near the shaft. In the iliustrrtive oomt and thus i'-ek the {1211 '28 th s means for contro=. the

IDBHlQQl $0 with the latter under t e eontroi of the operator in inoperetir posi ion, or 11 if the earn. 68 the i tht rrh iu zinothe should continue to contact with t e tail po it may 1' tion 70 otthe lath it cannot on reer trolled l the Weoge member 4!). Means is mines the clutch provided for unlockin the wedge member power pulley with rem 1 20 at the end of a predetermined plurality shown the brake ban. of revolutions of the heft, the construction mod to its ends at th in the present ineoenee being such that the being secured to one e shaft is carried with the puller throughout and it somewhat siiniln pa 0 to two rerohrtions of the i aft. Preferably end of the hr e hen: (En: of" these plates;

for unlocking the Wedge member 05 5 pivot ti its oper n and comprises, re 0 V ire 11m piece i? th oizite fl tit and urthe QC ml Y "Ir:- plate 0:). peratm to re heed t i earn plate 1' "van tlzut 4 to urfoek l =rom reuzher it! (5! loft th L;-

Fret l i t i is provided hevin )1 mud arhed to 1 l Mded t a, stud 86 on the frame of the meehine to l e hiuhe bend hold the roller in position to if on. oil the pu operated by the can and to aetuat tie meehenism has; been lock member 72 promptl; the roiler drops rahty 1 -erolut onsof tl e at are to take place. [is shown, the means for actuating the hook for the purpose set .r'orth comprises two spring plates 102 which enon opposite sides of the upper end of the hook 96 and are fixedly attached to a rocking sleeve 10?) int gral with member 1-0 and located on the stub sl af 412. The construction and arrangement such that when the starting lever is depressed its full distance to permit the lock member 72 to operate and lock the wedge member 40 in inoperative position the plates 102 also operate to release the hook and thus free the ends oi. the brake band for movement relatively to each other. Hence, although the lever 30 is operated as usual, it fails to effect a braking action, movement of the brake lever under these conditions serving simply to separate the ends of the brake band. For the purpose of roturn the ends of the brake band to engagi g relation to each other and in such. a position that the hook may again engage the recess and. shoulder 100 in the plate 90 there is provided spring means tending always to keep the ends of the brake band together and to return them after any separation. \Vhilc several diii erent constructions oi? spring means may be used, that preferred comprises a bolt 10% threaded into plate 92 and extending loosely through an opening in plate 90 and upon which there is positioned a spring 1.06 confinedbetween a surface on the plate 90 and a nutand washer 108 on the free end of the bolt 10 1. The tension 01 this spring can be so adjusted that it serves to return the ends of the brake band into contact with each other so that the hook 98 may engage as above described to lock the two ends of the bi e banzl in such cng ojement that the band is to all intents and puiposcs a single bl-11:6 member. When starting lever 1 16 is depressed only sui'iiciently to release the cam or wedge 4 1- and thus permit clutching of the power pulley to the shalt unaccompanied by operation of the la cl: member 72, the spring plates 102 do not move far enough to unhook the hook member 98 and hence the brake is operative at the end of a single revolution of the shaft. Shou d the hook member 96 be in .ved to unlatchl. position temporarily it ium'iediatcly rot is to operative position unless prei 'ontedas is the case when the wedge member 10 is locked in inoperative position, the spring fingers 102 being then held also in position to hold the latch out.

In order that the operator of the machine may be enabled to depress the starting lever M6 the desired distance to cause one revolution of the shaft and thus a single pressure applying operation or alternatively to cause a plurality of revolutions of the shaft and more than one operation of the presser menu her, there is provided means for controlling the movement of the handle 66 as to the QXT tent or" its movement whereby the operator 1s able to perform the operations above de scribed with certainty and dispatch. In the illustrative construction, the means for controlling the movement of the handle 66 com prises a manually operable latch member 110 (Fig. pivotally mounted at 112 in-the upper end ofthe handle 66 and'designed to engage the upper end of a guide red 1141, fixedly carried by the presser member 8, to limit the downward movement of the handle on the guide rod when only one revolution of the main shaft is desired. When a plurality of pressure applying operations is desired, the latch member 110 is arranged to pass into a recess 116 m the upper end of the guide 1141 and thus olier no obstruction to the downward movement of the handle 66 on its guide rod 1141. Hence it the operator wishes a plurality of 3-16SS111G applying operations he grasps the handle 66 and depresses it as tar as it will go. H but one pressure applying operation is desired he presses with his linger or thumb upon the end of a plunger 118 which is movable downwardly into the handle against the resistance of a light spring 120 which operates to return the plunger to its upperposition of rest. Carried by the plunger 118 is a pin 122 arranged to pass through a slot- 124 in the upper end of the latch member 110, the long axis of the slot being at an acute angle to the long axis of the latch member 116. Hence, if the plunger 118 be depressed the latch member 110 will be swung on its pivot 112 and its lower end will be engaged with the upper end of the guide 11d, thus limiting the downward movement of the handle 66 on its guide rod 11d. As shown the plunger 118 is provided with slots 126 on opposite sides which are open ended and permit the plunger 118 to move downwardly, although the pin 112 which supports the latch member 110 passes entirely across the chamber which receives the plunger.

T he operation 01 the machine it is thought will be clear from the detailed description but may be briefly re'capitulutixl as follows :'.lhe operator places a piece or worl; on the supporting bed 41- and determines whether a single or a plurality oi operations of the presser member is desired. It the former, the handle 66 is gasped and the plunger 11S depressed heroic depressing the handle. Under these conditions the starting lever is operated to such an extent that only one revolution of the shaft takes place and the presser member returns to its upper position of rest after a single operation of the work. On the other hand, it a plurality of pressure applying operations is desired, the handle 66 is grasped and. do pressed the full distance, the latch member 110 being inoperative as long as the plunger 118 is not actuated, and under these condimechanism operable upon a single unsustained actuation thereof t'or'causing one or a plurality of revolutions of the shaft, a brake for the shaft, and means for controlling the operation ofthe brake so that it Will not be applied at the end of one revolution when the control mechanism has been so operated as to cause a plurality of revolutions of the shaft. v

2. In a machine of the class described a shaft, a. power pulley on the shaft, a clutch for conn' cting the pulley to the shaft, a brake hand for stopping the shaft when the pulley has been unclutched therefrom, the brake band being divided to present end portions adjacent each other, a latch operative to connect the end portions'of the band, clutch conend portions yieldingly connected to.

trolling means, and connections between the clutch controlling means and said latch by which tee latter is operated to un'latch or release the ends of the brake hand When the controlling means has been operated to clutch the pulley to the shafttor more than one revolution.

8. In a machine of the class described, a shaft, a power pulley on the shaft, a clutch for connecting the pulley to the shaft for a single or for a plurality of I QVClUtlODS, a brake hand for operating on the shatt to stop the latter, the said brake band having ether so that the bake band can expand instead of acting as a brake, a latch normally opera tive to hold. the ends of the bl'nli hand together. clutch operating means under the control of the operator, and connections oetiveen the clutch operating means and the latch for unlatching and thus releasing the ends of the brake so that when the clutch operating means is actuated to cause a plurality 0t revolutions the brake is not applied at the end of single r'evolution'but becomes lifting the wed e member so that the clutch is thrown into operation, means for locking the Wedge member in inoperative position for a plurality of revolutions of the power pulley, braking means normally operative to brake the shaft at the end of a single revolution, and connections between the locking means and the bluking means for preventing eli'ective application of the latter until the pulley is unclutched from the shaft.

In a machine of the class described, a shaft, a power pulley loosely mounted on the shaft, a clutch for connecting the pulley to the shaft, means under the control of the op erator for controlling the clutch comprising a Wedge member Which when operated is followed by a clutching of the pulley to the shaft, a memher for locking' the wedge member in inoperative position for a plurality of re volutions of the power pulley, automatic means for unlocking or releasing the locking member, a latch, a braking means compris- .ing a brake hand having encs connected by said latch, and connections between the latch and the locking member so constructed and arranged that when the lock moves to operative position the latch is released thus preventing e'liectiye application ot' the h 'altino;

means until: the pulley is unclutched troni the shaft at the end of the plurality of revolutions of the latter.

6. In a machine of the class described, a shaft, a power pulley looselv mounted on the shaft. a clutch for connecting the pulley to the shaft, means under the control of the operator for controlling the clutch conlprismg a Wedge member which when manually operated is followed by clutching oi" the power pullevto the shaft, a meniher to: lock ing the wedge member in iiioperative position so that the clutch remains operative to connect the pulleyto the shaft during a plurality of revolutions of the pulley, and means for automatically releash he ucclg'e member so as to unclutch the pulley at the end of the predetermined numlcr of Te?!)- lutions.

T. In a machine of the class described, a shaft, a power pulley on the shaft, a clutch lo connect 9; the pulley to the shaft, a hralce for s lppn the shatt when the pul ley is unclutcheal. means comprising a lever normally operable at each revolution of the shaft to cause the application of the brake, means under the control of the (JPOIzllOl' for o' xerating the clutch and connections be tween the last mentioned means and the brake for preventing the operation of the brake if more than on revolution of the shaft is to occur.

8. In a machine of the class described. a shaft, a power pulley loosely mounted on the shaft, a clutch for connecting; the pulley to the shaft, a starting" lever for controlling the clutch so arranged that the extent of movement of the starting lever detern'lines lit) whether one or more than one revolution of the shaft is to take place, a braking means for stoppin the shaft when the pulley is unclutched from the shaft, a lever for opcrating the braking means normally at the end of each revolution of the shaft, and means under the control of the operator for preventing the applicationof the braking means at the end of a single revolution when the starting lever has been operated in such manner as to cause a plurality of revolutions of the shaft. 7

9. In a machine of the class described, a

hwork supporting bed, a presser member movable toward and. from the bed inpressure applying operations, power means for moving the presser member in the manner described, manually controllable'means for causing at the will of the operator one or more than one pressure applying operation of the presser member upon a single unsustained operation of the manually controllable means, braking means for operating on the power means normally at the end of each cycle of operations, and means for controlling the braking means so that it is not. applied at the end of the first cycle when the machine is to continue through a second cycle of operations.

10. In amachine of the class described, a work supporting bed, a presser member, power means comprising a shaft for moving the presser member toward and from the bed in pressure applying operations, a

" power pulley rotatable on the shaft, means associated with the shaft and the pulley and under the control of the operator for conneeting the shaft to the power pulley for one or more pressure applying operations, a braking means normally operative to brake the shaft at the end of a single revolution of the latter, and means automatically operative to prevent the action of the braking means at the end of one revolution when the machine is to continue through two revolutions of the shaft.

11. In a machine of the class described, a work supporting bed, a presser member, power means comprising a shaft for moving the presser member toward and from the work supporting bed in pressure applying operations, a power pulley on the shaft, means under the control of the operator for connecting the pulley to the shaft, a braking means normally operative to stop the rotation of the shaft at the end of a single revolution of the latter, and means asso ciated with the means for connecting the pulley to the shaft for controlling the operation of said braking means so that the latter will not be operative until the end of the second revolution of the shaft when two pressure applying operations of the presser member are to take place at the will of the operator.

12. In a machine of the class described, a work supporting bed, a presser member, power means for moving the presser member toward and from the work supporting bed, manually operable means for controlling said power means and movable to initiateone or a plurality of pressure applying operations, and means under the control of the operator for determining the extent of movement of the manually operable means so that the number of pressure applying operations of the pressure member may. be predetermined at the will of the operator.

ill. in a machine of the class described, a work supporting bed, a pro;v power means for moving the presser member toward and from the work supporting bed, manually operable means comprising a lever forrontrolling said power means and movable to iniiate one or a pluralit-y of or member,

pressure applying operations, and means under the control of the operator for determining the extent of movement of the lever so that the number of pressure applying operations of the presser member may be predetermined at the will of the operator.

7 i l-i In a machine of the class described, a work supporting bed, a presser member, powerm ans for moving the presser member toward and from the worlr supporting bed, manually operable means for controlling said. power means comprising a lever, handle associated with the lever, and means in the handle comprising a stop for limiting the movement of the handle when only one pressure applying operation of the presser member is desired.

15. In a machine of the class described, a work supporting bed, a presser member, power means for moving the presser member toward and from the work supporting bed, manually operable means for controlsaid power means comprising a lever, handle associated with the lever and movable to an extent to cause a plmalitv of pressure. applying operations of the presser member, means in the handle and. under the control of the operator for locking the handle against suei movement as will cause a plurality Y turning the position.

16. In a machine of the class described,a shaft, a power. pulley on the shaft, a clutch for connecting the pulley to the shaft, a brake band for stopping the shaft when the pulley has been unclutched therefrom, the ends of the brake band being connected by a latch, clutch controlling means, and connections between the chit-ca controlling means and said latch by which the latter operated to unlatch or release the ends of the brake band when the clutch controlling means has been operated to cause more than one revolution of the shaft.

operations, and means for re-- locking means to inoperative 17. In a machine of the class described. a work supporting bed, a presser member, power means for moving the presser member toward and from the work supporting bed, manually operable means for controlling said power means comprising a lever, a handle associated with the lever and movable to cause a plurality oi pressure applying operations of the presser member, and means movablevin the same direction as the handle for locking the handle against such movement will eii'ect a plurality of operations of the presser member and at the same time permitting the handle to move a distance sufiicient to initiate a single pressure applying operation.

' 18. In a machine of the class described, a work supporting bed, a presser member, power means for moving the presser member toward and from the bed in pressure applying operations, starting means for controlling said power means, a handle associat ed with said starting means, the handle be 7 ing movable to initiate normally a plurality of operations of the presser member, and means under the control of the operator for limiting the movement of the handle so as to prevent such movement of the handle as will initiate a plurality of operations of the presser member.

19, In a machine of the class described, a

work supporting bed, a presser member,

power means for moving the presser member toward and from the work supporting bed, manually operable means for controlling said power means comprising a lever operative to initiate one or a plurality of pressure applying operations, and means under the control of the operator for limiting the movement of the lever when only one pressure applying operation of the pressure member is desired.

20. In a machine of the class described, a work supporting bed, a presser member, power means l orimoving the presser member toward and from the work supporting bed, manually operable m ans for controlling said power means comprising a lever operative to initiate one or a plurality of pressure applying operations, a handle associated with the lever, and means in the handle for limiting the movement thereof when-it is desired to eiiect only one pressure applying operation of the presser member.

21. In a machine of the class described, a worl: supporting bed, a presser member, power means for moving the presser member toward and from the work supporting bed, manually operable means for controlling said power means comprising a lever, a handle associated with the lever and movable to cause a plurality of pi ssure applying operations of t ne presser member, and means movable in thesame direction as the handle for locking the handle and lever against such movement as will ellect a plurality oi operations of the pre r member and at the same time permittin the handle to more a distance sullicient to initiate a si gle pressure applying operation.

22. In a machine oi the class described, a work supporting bed, a presser member, power means for moving the presser member toward and from the bed in pressure applying operations, starting means for controlling said power means, a handle 21$;F;C ('i:'ited with said starting means, a guide on which the handle is movable to initiate nor-- mully a plurality of operations oi? the pres-:- cr member, and means under the cont? oi. the opce'ator for limiting the movement of the handle on the guide so as to prevent such movement 01 the handle as will initiate a plurality of operations of the press t member.

23. In a machine of the class described, a work supporting bed, a prcsser member, power neans including a shaft for moving the presser member toward and from the bed in pressure applying operations, starting means comprising a lever for controlling said power means, a handle associated with said starting means, a guide on which the handle is movable, and a finger piece movable in the same direction as the handle for limiting the movement oi? the handle.

24;. In a machine of the class described, a work supporting bed, a presser member, power means including a shaft for moving the presser member toward and from the bed in pressure applying operations, star ing means comprising a lever for controlling said power meai a handle associated with said starting means, a guide on which the handle is movable and finger piece movable in the same direc ion as e handle for controlling the mo ncnt o1? hiehandlc.

'25. In a machine of the class (.lescribml, a work supporting bed, a pre seimember, power means including a shaft for moving the presser IllQll'liJQl toward and from the bed in' pressure applying operations, starh ing means comprising a lever for controlline; 'd power means, a handle asoc with said starti g means, a guide on which the handle movable, and means: in the handle and under the control of the operator for locking the handle against movement on the guide.

26. In a machine of the class described, a work supporting bed, a pro :er member, power means including a shaft for moving the presser member toward and from the bed in pressure applying operations, starting means comprising a lever for controlling .aid power means, a handle associated with said starting means, a guide on which the handle is movable, and means compris- Ill) ing a member slidable in the direction of movement of the handle for contacting with the end of the guide and thus preventing further movement of the handle on the guide.

27. In a machine of the class described, a work supporting bed, a Jresser member, power means including a shaft for moving the presser member toward and from the bed in pressure applying operations, starting means comprising a lever for controlling said power means, a handle associated with said starting means, a guide on which the handle is movable, and a member slidable in the end of the handle so to be operable by a linger of the hand which grasps the handle for locking the handle to the guide.

28. In a machine or the class described, a work supporting bed, a presser member, power means including a shaft for moving the presser member toward and from the bed in pressure applying operations, starting means comprising a lever for controlling said power means, a handle associated with said starting means, a .ide on which the handle is movable, nd member movhandle by a finger able into the end 01" the ot' the hand which grasps the handle for locking the handle against mover on}; on the guide. p

29. In a machine of the class described, a vvorlr supporting bed, a presser member, power means including a shattfor moving the presser member toward and from the bed in pressure applying operations, starting means comprising a lever for controlling said power means, a handle associated with said starting means, a guide mounted on the presser member and on which the handle is movable, and a member movable into the handle by a finger of the hand which grasps the handle and comprising a latch which is operated by the movement of the member to loclr the handle on the guide.

30. In a machine of the class described, a worlz supporting bed, presser m i movable over the bed, power means comprising a shaft for moving the presser member toward and from the bed in pressure applying operations, a power pulley on the shaft, means under the control of the operator for clutching the pulley to the shaft, a braking means independent of the clutching means and normally operable to stop the shaft after a single revolution, control member, and means operable upon a single unsustained actuation of the control member for preventing the operation of the braking means at the end of a single revolution of tee shaft when it is desired that the machine continue in a plurality of cycles of operation.

31. In a machine of the class descril'ied,

a work supporting bed, a presser member movable over the bed, power means comprising a shaft for moving the presser member toward and from the bed in pressure applying operations, a power pulley on the shaft, means for controlling the connection of the pulley to the shaft for one or for a predetermined plurality of revolutions of the power pulley, braking means operable to bralre the shaft at the end of a single revolution thereof, and means for preventing the application of the braking means at the end of a single revolution of the sl'ialt when said controlling means has been operated to initiate said predetermined plurality of revolutions of the shalt.

ln s macl'iine of the class described,

a work supporting bed, a presser member movable over the bed, power means com prising a shaft for moving the presser member toward and from the bed in pressure applying operations, a power pulley on the shaft, means under the control of the operator to connect the power pulley to the shaft for predetermined plurality of revolutions of the power pulley, a bralring means normally operative for braking the shaft at the end of a single revolution thereof, under the control of the operator for prventing such normal operation of the braking means, and means for automatlclly causing the operation of the braking means at the end of said predetermined number of revolutions of the shalt.

In a machine of the class described, a worl: supporting bed, a presscr member movable laterally over the bed and also toward antfrom the bed, power means cemprising a shaft for causing movement of the presscr member toward and from the i bet in pressure applying operations, a power pulley on the shaft, a. braking means normally operative to brake the sl the end of a smglc revolut on thereor, and

s for can we; the the power pun y to the shalt and for controlling the ac ion of said braking mains, said last-mentumed means coringrising a manually operable lever movable with the press-e member in lateral directions over the bed.

3%, In a mach l? "he class described, a draft, a power pulley n a aft, a clutch for connecting the power to the shaft, means for controlling the c i con'iprising a cam member, means compi. sing a lever under the con rol of the oper for for lifting the cam member so that the clutch is thrown into operation, means normally operative to release the cam member to elfi'ect a siugl revolution of the shaft, and me, 15; for lo l ing the cam member in inoperative position for effecting a plurality of revolutions of the power pulley.

In a machine of the class described, a

clutching oi.

IOU

shaft, a power pulley loosely mounted on the shaft, a clutch for connecting the pulley to the shaft, means under the control of the operator forcontrolling the clutch comprising a wedge member which when operated is followed by a clutching of the pulley to the shaft, a member for locking the wedge member in inoperative position for effecting a plurality of revolutions of the power pulley, and automatic means for unlocking or releasing the locking member.

36. In a machine of the class described, a shaft, a power pulley loosely mounted on the shaft, a clutch for connecting the pulley to the shaft, a lever manually operable for controlling the clutch comprising a wedge member which when operated is followed by clutching of the power pulley to the shaft, and a member controlled by said lever for locking the wedge member in inoperative position so that the clutch remains operative to connect the pulley to the shaft during a plurality of revolutions of the pulley.

37. In a machine of the class described, a work supporting bed, a presser member, power means including a shaft for moving the presser member toward and from the bed in pressure applying operations, starting means for controlling sald power means and operable through predetermined distances selectively determinable by the operator for causing one or more than one operation of the presser member, and means, ar-

' ranged to be manipulated by the operator,

for setting limits to the movements of the starting means.

38. In a machine of the class described, a work supporting bed, a presser member, power means including a shaft for moving the presser member toward and from the bed in pressure applying operations, starting means comprising a lever movable through predetermined distances for controlling said power means, and means under the control of the operator for determining selectively the limits of movement of the starting lever whereby one or more than one operation of the presser member takes place.

89. In a machine of the class described, a work supporting bed, a presser member, power means comprising a shaft for moving the presser member toward and from the work supporting bed in pressure applying operations, a clutch on the shaft for connecting the latter to the source of power, manually operable means comprising a lever for initiating operation of the machine and for selectively determining the number of pressure applying operations upon a single unsustained actuation of the manually operable means, and means for controlling the lever and thu. assisting the operator in selectively determining the number of pressure applying opera tions.

40. In a machine of the class described, a shaft, a circular member fixedly secured to the shaft, a brake band arranged to embrace the circular member, the said brake band being divided and provided intermediate of its ends with a latch for releasably connecting the divided portions, and manually operable means for controlling the latch.

41. In a machine of the class describe-.1, a shaft, a brake for the shaft, power means for operating the brake, means under the control of the operator for rendering the brake inoperable, and automatic means for restoring the brake to operative condition.

In a machine of the class described, a shaft, a brake for the shaft, power means for applying and releasing the brake in normal operations of the machine, and manually operated means for rendering the brake inoperable by said power means.

In testimony whereof we have signed our names to this specification.

ARTHUR BATES. JOSEPH GOULDBOURN.

Images