US1279512A - Work-support-controlling mechanism. - Google Patents

Description

L. A. CASGRA|N. WORK SUPPORT CONTROLLING MECHANISM. 1,279,512.

APPLICATION FILED JAN.2B, I915- a f z 54 M 7 0 0 w wg L. A. CASGRAIN. WORK SUPPORT CONTROLL' ING MECHANISM.

APPLICATION FILED JAN.28| 1915.

Patented Sept. 24,1918.

3 suns-sugar a.

' tween the work Unrrnn sear LOUIS A. CASGBAIN, or BEVERLY, ma-ssaoirnsnrrs, AssIeno'a, BY inns an assiea,

MEN' IS, TO UNITED SHOE MACHINERY A CORPORATION OF NEW JERSEY.

CCRPORATION, or PATEBSO1\T,:NEW JERSEY,

wonK-surron'r-oonrno inG MECHANISM."

Application filed January 28, 1915.-

provements in li ork-SupportGontrollingi Mechanism, of which the following descrip tion, in connectionwith the accompanying drawings, is a specification, like .reference characters on the drawings indicating like parts in the several figures. f

'This invention relates to work supports and to work support controlling means which are particularly adapted for machines for use in the manufacture'of boots andshoes and 1s hereln shown herein shown as incorporated is particularly adapted for inserting slugs or fastenings 1n the top lifts of the heels of boots or shoes, an operation which requires for its successful performance substantial uniformity in the work presenting operations. In 'such machines the work is usually clamped besupport and a work abutment at the time the fastening is inserted, and between the successive fastening insert ing operations a relative releasing movement of the work support and the work abutment takes place, mechanism being generally pro-.

vided for making'this releasing movement uniform regardless of differences in the amount of separation of the work support and the work abutment as the work varies in thickness. This mechanism ordinarily comprises a spring by which the relative movements of the worksupport and its re-.

leasing mechanism that are necessary to acconnnodate'the variations in dimensions of the clamped work are effected, the spring aiding usually in moving the work support again into work work abutment. To insureuniformity o the clamping action between the'work sup abutment it is desirable port and the work Specification of Letters Patent.

ally made for an adjustment of the work as embodied in a con-v struction comprising a work support of the is connection with I frequent adjustment of the heretofore ,to make clamping relation to the f which will operate automatically and Wlll Patented Sept. 24, 1918l- Seria1No.4,936. I

that the range of compression of this spring shall not be too great, 'and', mo'reov'er,it is 5' found to be desirable not to attemptto p'r'o-- vide, in the automatic compensating adjust-'= ment of the work support releasing =mec'haf nism, for the accommodation of a very great. range of'variations in the heights or thicknesses'of the different pieces of work to be operated upon, since thereby the efficiency of the operation of this mechanism is likely to be seriously reduced;

In machines of-this kind provision is us'u-f support upon its carrier' so that. when the work is clamped theposition of the "work support carrier may be kept withinc'omparatively narrow limits. It has been necessary heretofore to effect this adjustment by hand, and, when. inserting slugs or other faste'nings in the heels or in the heel seats of'shoesi 0n the last, proper presentation of the work and proper release for feeding has required-I work support upon its carrier owing to the lack of uniformity in the positions, depths and conditions of the last pin holes in the lasts,to differenc'es in the heights of heels, to difierences in the heights of lasts and to other 'causes tending to a lack of uniformity in the work. Because of the inconvenience and undesirability of the above describedadjustment-ofr the work support, it has been the practice this adjustment only when about to operate upon shoes of a differentstyle5 or when the shoes: were upon lasts of a different type or height or were 0 a markedly different size. The operator has a usually, therefore, made this adjustment of 90 the work support only when starting upon a new case of shoes, with the result that the. slugging or fastening inserting operation has been affected in itsquality more or less by 'eason -'ofimproper support oflthe work due to the variations in the work, above pointed out. An important object ofthe present invention is to provide means for adjusting the work supportto adapt ittofthegdiffer'entc.

variations inth e work, above mentioned,

effect the adjustment of the worksupport for each piece of work. g i a j 6 tion is the provision of means tlon is shaft, as more fully Another object of the invention is to provide improved work support adjusting means which will be general utility where conditions similar to those described above are present. 7 1 'An' important feature of the invention is the construction and arrangement of the work support adjusting means so that an initial adjustment of the work support upon its carrier is effected to adapt it to the par ticular piece of work to be operated upon and the work support is then locked to its carrier in this adjustment. After work clamping relationship has been established between the work support and the abutment the control of the work support is left to automatic controlling means of the general type employed in such machines while the machine is performing the series ofoperations which are to be performed upon this piece of work; Another important feature of the invenfor looking a work support thus adjusted to the machine frame, whereby an accurately adj usted,rigid support for the work is provided for each inserting operation.

Other objects and important features of the invention will appear from the followinn description and claims when considered in connection with the accompanying drawings, in which, I

Figure l is a side elevation of a slugging machine in which awork support embodying the present invention has been incorporated;

Fig. 2 is a. detached perspective of the work support and a portion of the connections by which the automatic adjustment is controlled V Fig. 3 is a longitudinal section through the locking mechanism;

Fig. 4 is a perspective detail showing the principal elements of the locking mechanism in separated relation;

1*" ig. 5 is a perspective view of the mechan sm for, intermittently depressing the work support; and

ig. 6 is a perspective view of the eccentrically mounted fulcrum for the lock operating bell-crank, said fulcrum being removed from its bearings.

The slugging machine in which this inven shown as incorporated is of'the type illustrated and described in United States etters Patent to L. A. asgrain, No. granted February 18, 1913, and comprises, as more fully set forth in said Letters Patent, a base or standard 10 which supports a head 12 in which is journaled the main driving shaft 14, from which a cross shaft 114 is driven by a worm and gear connection, not herein shown. From this cross set forth in said Letters Patent, the starting and stopping of the fastening inserting operation is controlled and above suggested, is of the pivot pin 26 having viewed in Fig. 1 a lever arm 188 is caused to I rock a rock shaft 186 which controls the movement of the awl 162 into and out of operative relation to the inserting mechanism. The awl 162, when in operative position, is swung laterally with a swinging head to feed the work Upon the cross shaft 114 is carried a cam, more fully shown and described in said Letters Patent, by which the work support carrier is raised into its operative position before the beginning of the fastening inserting operation.

The illustrated work support, as: hereinjack type, and comprises a spindle 20 in the upper'end of which is adjustably secured in a well-known manner a last pin holder 22 carrying a last pin 24-. The spindle 20 at its lower end is secured by a set screw 25 (Fig. 2) to a J hearings in cars 28 of a rocker foot 30, said rocker foot being of thetype illustrated and described in United States Letters Patent to W. H. Cuff, No. 9l9,i24,- 'ranted April 27, 1909, and being provided with teeth 32 which mesh with corresponding teeth 34 in a rocker bed 86 carried by a slide 38 arranged to slide vertically in guides 40 in a depending portion of a bracket 12 having at its upper end a sleeve 4L4: which is clamped upon the horn or jack post 46 by clamping screws A bolt 50 passing through an enlarged opening in the rocker foot 30 prevents the com plete separation of the rocker foot 30 from the bed 86. The slide 38 is provided below the bed 36 with teeth 52 with which cooperate two dogs or pawls 54, 56, the pawl 54 being wider than the pawl 56, and being slotted at 58 to receive the pawl 56, the two pawls being pivoted upon a common pivot pin 60. The teeth of the paw-ls 54T and 56 are so inclined that they; tend to operate in opposite directions so far as their locking action is concerned. The purpose of providing two pawls, which serve to lock the jack to the jack post against relative movement thereof in either direction. is to insure the movement of the jack away from the work abutment during the work releasing operation. as well as to provide .a positive connection to the jack post to receive the impact of the fastening insert ing operation. Springs 62 coiled about a pin 64 extending between the sides 66 of the slide recei ing portion of the bracket 12 act at one end uponcthe upper portion of the pawl and force its tooth toward the ratchet teeth and at their other ends upon the tail 68 of the pawl 56 to force its tooth also toward the ratchet teeth 52 upon the slide 38. The tail 68 of the pawl 56 has upon its under side abevel face 70,

and the tail portions 72 of the pawl 54- have upon their rear faces bevel portions 74,;the bevels 70 and 74 being so related to each other that they may be engaged substantially simultaneously by the pawl disengaging member adjustably connected to the front end of a lever .7 y

bolt 80 having a shouldered nut 82 received in a slot 84 insaid member 7 6. At its rear end the lever 7 8 is connected by alink 86 to anarm 90 upon therock shaft 186 of' the awl controlling mechanism hereinabove pins 96 on thebracket42. It will benoted that in this figure the pawl disengaging 7 member 76 is located between the tails of the pawls, and the pawls are disengaged from the ratchet teeth'52. When the machine is to be rendered op rative to insert the fastenings, as morefully described in the Letters Patent above referred to, the shaft 114 has imparted to it a half turn and as it turns it operates to raise the jack post .46, thereby through the bracket 42 raising the pawls 54 and 56 until theirtails 68 and 72 are moved out of releasing relation to the member 76, when "the pawls will.

engage the ratchet teeth 52, thus locking the ack in the position of adjustment with respect to the jack post 46 in which it has been held by the springs 92 and causing the jack to partakethereafterof the movements of the jack post. v V

Inthis machine, as in the machine of the Letters Patent above referred to, the work supportis automatically depressed between the successive fastening inserting operations to permit the work to be fed easily into position to receive the succeedingfastening, and

means is provided for automatically bringing to bear upon the work support thc clamping pressure of a strong spring before the fastening inserting mechanism is ren- "dered operative to insert fastenings and for removing this pressure and lowering the post 46 after the inserting mechanism has been rendered inoperative. The mechanism for effecting the initial raising and final depression of the post 46 is substantially identical with that of the Letters Patent hereinabove referred'to, and comprises a cam upon'the end of the shaft 114 remote from that shown in Fig. 1, which cam is given a half turn .to

V raise the post 46 when the inserting'mech anismf is :irendered operative-as "more fully described in' said Letters :Patent}. Themechanism for intermittently depressing the work support to release the Work for feed ing is ofthe type of that. shown in Letters Patent No. 1,108,133, August 25,1914, L. A.

Casgrain, and is illustrated sufliciently for theapurposes of the present disclosure in Figswo and 6 of the drawings.

"Referring. to Figs. land 5, the ack post '46 restsfupona support 460 towhich the upper link 462' of a toggle is pivotally connected, the support 460 comprising a-studor spindle1464 which projectsup into the hollow interior of the post 46. The lower link 47 0 oftheztoggle is pivotally connected to a slide 440. To lower and raise the work support, means is provided for breaking and straightening-the toggle, the illustrated means comprising a rod 47 2 pivotally connected atone end to the knee joint 4740f the. toggle andat its other end pivotally against movement by the spring 268', more fully shown and described in said Letters Patent No. 1,108,133, when the toggleis broken, and also for locking the slide 440,

when the" toggle is straightened, to'provide a.

rigid support for'the work during the fasten ing inserting operation. The illustrated means comprises a plurality of locking plates 480spaced from eachother and attached by the rivet-482 to the'slide 440,the

plates 480 alternating with'a second set of locking plates 484 attached to andcarried by the casing 442. The illustrated means for pressing the respective sets of plates into locking engagement with each other differs slightly from" that shown in said Letters Patent No. 1108,1355, and comprises a slid-' ing bolt 492 having in its rear end-a notch 498 wider at itsopen'end than atits bottom, a tooth 494 upon the upper end of a bell crank 495, fulcrumed upon an eccentrically mounted fulcrum 491,- being arranged to be moved into engagement with said notch 493, whereby said'bolt 492 may be moved into and out of operative locking relation to the plates as saidbellicrank is rocked upon its fulcrum. Thebell crankmovement of the lever 497 is transmitted by) the rod 496 to the bell crank 495; and the belt 492 is thus moved in proper time relation to the straightening and breaking of the toggle 462, 470.

When the tooth 494 upon the bell crank 495 i inthe position shown in Fig. 5 of the drawings, the movement of the bell crank is not transmitted to the bolt 492, although the bell crank is constantly rocked by reason of its connection with the constantly rotating main shaft 14. To move the tooth 494 into operative relation to the notch 493 at the proper time in the operation of the machine, means is providedfor turning the eccentrically mounted fulcrum 491 in its bearings, the illustrated means comprising a crank arm 500 clamped upon the extension 501 of the concentric portion of the fulcrum member 491, said crank arm being provided at its outer end with a wrist pin 502 which is connected by a link 503 to an arm 504 rigidly clamped upon the rod 264 by which.

t e work support is automatically raised mtowork supporting position when the machine is started, as more fully set forth in said Letters Patent No. 1,108,138, above re ferred to. When. the machine is to be rendered operative for inserting fastenings, the rod 264 is automatically depressed to rock the lever224 and raise the work support, bringing to bear upon the Work support the clamping pressure of the spring 268, and this downward movement of the rod 264 turns the crank 500 in a counter-clockwise direction in Fig. 5, and raises the eccentrically mounted fulcrum of the bell crank 495 so that the tooth 494 comes into operative relation to thenotch 498.

The springs 92, which effect the'automatic adjustment of the jack with respect to the jack post, are preferably of such length and of such strength that, when the jack post 46 is in its lowered position, these springs will press the work against the foot plate or Work abutment 851 with a light yielding pressure, sufficient, however, to insure the quick adjustment of the jack to the thicknes of the work. As the jack post is raised before the inserting mechanism is rendered operative, the tension on the springs 92 will be increased, thus insuring the maintenance of the work against the foot plate 351 until 7 initial the pawl disengaging member 76 has been moved out of engagement with the tails of the pawls and has thus permitted the pawls 'to lock the slide 38 to the bracket 42. The

spring 268 is preferably of'such strength compared with the springs 92 that, in the work support adjusting operation, substantiallv no compression of the spring 266 takes place before the work support is locked to its carrier. r

The operations of the various elements of the work support controlling and adjusting mechanism have been described in connection with a detail description of these .ele-.

ments, but for the sake of clearness the op eration of the mechanism as a whole will now be described. The parts being in the position shown in Figs. 1 and 2, the operator places the last upon the last pin 24 thereby depressing the jack against the tension of the spring 92, these springs, as hereinabove set forth, be ing strong enough to hold the top lift lightly against the foot plate 351 so that. the operator can easily locate the shoe in proper relation to the gage or gages usually provided in machines of this type. The op-v erator now manipulates the manual control of the actuating mechanism, more fully described in Letters Patent No. 1,053,479, hereinabove referred to, thereby causing the haft 114 to be connected to the constantly rotating shaft 14. Turning of the shaft. 114 through a half rotation operates, through connections to the lever 224, to raise the jack post 46, said connections comprising the rod 264 and the spring 268 which is compressed to place spring pressure upon the jack post as soon as the upward movement of the jack post is prevented by the locking of the jack to the jack post and the clamping of the work, the rod 264 then moving relatively to the lever 224. As the jack post moves upward it carries with it the thus moved out of engagement with the pawl releasing member 76 shortly after the upward movement of the jack post begins. In the illustrated machine substantially a quarter of the total movement which would be imparted to the jack post, were it entirely free to move, is utilized in moving the pawls out of engagement with the releasing mem-. ber 76, so that the balance of said movement of the jack post raising mechanism is utilized in compressing the spring 268 to clamp, the work under spring pressure. After the pawls are permitted to move into engage ment with the ratchet plate to lock the jack to the jack post and after the clamping pressure has been placed upon the work, the sliding bolt 492 is moved in the direction to cause the plates 480 to be locked to the plates 484, the eccentric fulcrum 491 for the bell crank 495 having been. turned during the jack post raising operation by the connections to the rod 264, comprising the arm 500, the link 503 and the arm 504. At this time the toggle 462, 470 is substantially in straightened condition, a slight straightening movement following the clamping to gether of the plates 480 and 484 to apply to the work a further clamping pressure.

The machine now tening and, after the awl has entered the work to form an opening to receive the next fastening and before it starts to move in the direction to feed the work, the rod 472 is moved in the direction to break the toggle 462, 470 to lowerthe jack post, the plates e80, see being maintained at this time in looking relation to each other whereby they prevent the spring 268 from acting upon the jackpost during the Work releasing operation. As the toggle is again moved toward straightened position the sliding bolt 492 is drawn back to unlock the plates 4:80, dSd' to permit the spring 268 to cooperate in adjusting the work support to the work in the event that the thickness of the work at the point at which the succeeding fastening is to be inserted is greater or less than that previously clamped. In the event that the thickness of the work should increase con siderably, thus tending to bring the jack post into such position that the pawls 54, 56, during the work releasing movement of the jack post, might move into engagement with the pawl releasing member 76, thus causing a new adjustment of the j ack upon the jack post, means has been provided for moving the pawl releasing member 7 6 out of the range of movement of the pawls as the machine is rendered operative to insert fastenings in order to prevent unnecessary adjustments oi the jack upon the jack post while the machine is operating upon the piece oi? work for which it has been initially adjusted. Although such adjustments would not effect the quality of the work, they are objectionable in that they tend to wear the parts needlessly. The means :for moving the member 76 out of the path of movement of the pawls at this time has been 'hereinabove described, and comprises the lever '78, link 86 and arm 90 upon the rock shaft 186. As the awl 162 is moved into operative position by the rocking of the rock shaft 186 the arm 90, through its connections tothe lever 7 8, moves the member 76'out of the path of movement of the pawls5d, 56.

Having fully described my invention, what I claimas new and desire to secure by Letters Patent of the United Statesis:

1. In a machine of the class described, which comprises mechanism for performing aseries of operations upon work, and means for efiecting a relative feeding movement of the 'workand said mechanism between successive operations, the combination with a-work support comprising members relatively movable to adjust the support to different work thicknesses, of means for automatically effecting such relative movement adjustment for saidseries of operations betore said operating mechanismbegins to op- V v ably -mounted sprlng connections between to mamtam'saad parts normally in extended erate upon the work.

2. In amachine of the' class described,

the combination with a work support and 'means, including work thickness compensating mechanism, for depressing the work support to permit the work tobe :t'ed freely, of means for automatieally,eitecting an initial adjustment of said work support to the thickness or the work before the operating mechanism is rendered operative, and means for maintaining said adjustment whilethe machine continues to operate upon a piece of worktor which the adjustment has been effected," I j v V 3. In a machine of the class described, a work support, a work abutment, means op-j erating to cause said work support normally to clamp'thework against said work abut ment when the machine is operative, means comprising work thickness compensating successive operations of the machine thereon,

and means for automatically effecting an ini tial relative adjustment of" the work support and its operating means to the'thi'ck ness of the work tosecure substantial um formity 0t clamping pressure upon different pieces of work.

t. In a. machineof the class described, the combination with a work abutment, a work supportand controlling means operating between successive operations of a series performed upon a single piece of work to effect relative work releasing and work clamping movements of said support and said abutment, of means, governed in its operation by the clamping of the work for the initial operation of the series, for automatically effecting a relative, adjustment of of work.

5. In a ma'chine'of the class-described, a"

work support, a carrierfor saidwork support, conuectlons between said parts whereby they are normally yieldingly maintained in extended relation a means acting uponsaid carrier for automatically bringing said carrier into predetermined relation to said abutment whereby a yielding relative movement of said; work support and said carrier is effected, means :for automatically locking said work support. to said carrier in the relation which said parts assume at the end of said relative movement, and means for thereafter effecting final work clamping the work support and the abutment.

, relationship between .120 v 6. In a machine" of the classdescribed, work support, a carrier for said Work su-pwork abutment, i

port iupon which -s'aid work support is slid-"'- said work'support and said carrier tending said carrier in the adj ustcd relation to which said parts are thus moved, and means for thereafter moving said parts together while a series of operations is being performed upon the work for which they have been ini tially adjusted.

7. In a machine of the class described, which comprises mechanism for performing a series of operations upon work and means for effecting a relative feeding movement of the work and said mechanism between suc cessive operations, a work support, a carrier for said work support, connections between said work support and said carrier whereby said parts are normally yieldingly main tained inextended relation, a work abutment, means for bringing said carrier into predetermined relation to said work abut ment whereby a relative movement oi. said carrier and said Work support is effected, means for locking said work support rigidly to said carrier in the relation which these parts assume at the end of said relative movement, and means for automatically ef tecting a movement of depression of said carrier and work support, of uniform extent, between the successive operations upon the work. 7

8. In a machine of the class described, which comprises mechanism for performing a series of operations upon work and means for efl ecting a relatii e feeding movement of the work and said mechanism between succe sive operations, a work support, a carrier for said work support upon which said work support is adj ustably mounted, a work abutment, means operating automatically before the series of operations upon the work begins for effecting an adjustment of said work 'supportupon its carrier with respect to the work gaged between said support and said abutment and for lockmg said work support rlgldlyto said carrier after said ad ustment hasbe'eneiiected, and means operating automatically to eii'ect an adjustment of said rigidly connected work support and carrier with respect to said abutment after each operation upon the work and for locking said carrier against movement for the succeeding operationupon the work.

9. In a machine of the class described, which comprises mechanism for performing a series of operations upon work, a work abutment, a work support comprising relatively movable members, means for effecting I a movement of said worksupport into operative work su nortin relation to said abutment, constructed to cause a relative movement of said members wherebysaid work i support is adjusted to the thickness of the 7 work, means for locking saidmembers together after such adjustment and means for locking said work support against bodily movement before each operatlon upon the i work. ,7 c

10. I11 a machine of the class described, which comprises mechanism for performing a series of operations upon work, a work abutment, a work support comprising relatively movable members, means for efiecting a movement of said work support into operative work supporting relation to said abutment, constructed to cause a relative movement of said members whereby said work support is adjusted to the thickness of the work, means for locking said members together after such adjustment, means for effecting a bodily movement of said work support to release the work and again clamp it after each operation upon the work constructed to effect always the same-amount of movement of said work support, and means for locking said work support against bodily oration upon the work.

11. In a machine of the class described, the combination with a work support, comprising relatively movable members, and work support releasing mechanism constructed to eliect a uniform releasing movement of the work'after each operation there. on, of means for effecting automatically :1

relative movement of adjustment of the members of said work support before the initial operation upon the work and for locking said members in their position of ad ustment.

movement before the succeeding op- 12. In a machine of the class described,

ment of said carrier to move said work support into work supporting position and causing an adjustment of said work support upon said carrier in proportion to the thickness of the work, means for locking said work support to said carrier in the adjusted relation, and means for locking said carrier to the machine frame.

13. In a machineof the class described, the combination with the machine frame, a work abutment, and a work support, of a carrier for said work support upon which said work support may be adjustedto suit it to the thickness of the work, means for imparting a predetermined movement to said carrier and for simultaneously effect ing the adjustment of said work support upon said carrier, means for locking said work support to said carrier in the ad support is caused to clamp the work against the work abutment, and means for locking said support'in work clamping relation.

1%. In a machine of the class described, thecombination with the machine frame, a work abutment and work supporting means, said abutment and said work supporting means being relatively for movable into Ja elle work caliperingrelation .to each other, and said work supporting means comprising members relatively movable to ad ust said -support to the thickness of the work, of

work abutment and work supporting means,

said work supporting means comprising members normally yieldingly maintained in extended relation, of means acting ,automatically to efiect a relative work clamping and work calipering movement ,of said abutment and said work supporting means, constructed to effect, by reason of the interposition of the work, a relative movement of said members to adjust said supporting means to'the thickness of the work, and means acting automatically to lock said members together in their adjustedrelation and to'lock said work support to the machine frame.

16; In a machine for performing a series of operations upon a piece of work'which is moved relatively thereto, a work support, a carrier upon which said work support is self-positioning to suit it to the general characteristics of the work, means operating initially to move the carrier relatively to the work support, means operating automatieally to lock said support to the carrier in adjusted position before said series of operations begins, and means operating automatically to move the carrier to release the work for feeding movement thereof between the successive operations. I

17. In a machine for performing a series of operations upon a piece of work which is moved relatively thereto, a Work abutment, a work support, a carrier'upon which said work support is self-positioning to suit it to the thickness of the work, saidwork support being movable to present the'work' to the machine, means operating automatically to lock said support to said .carrier in adjusted relation and means for thereafter bringing said parts into work clamping relation to said abutment. v

18. In a machine for performing a series of operations upon a piece of work which is moved relatively thereto, a work support, I a said work support adjustable to suit it to the general 'chars.

a carrier upon which acteristics of the work, means operating automatically to cause said work support to present the work to the machine and to effect thefladjustment of said work support upon said carrier, and means operating automatically to lo k said work support to the carrier before said series of operations begins, said last named means being con- "interposed said support to structed and arran 'edto. maintain said work supportglooke tojthe carrier during the series of operations.

V 19'. In a machine for performing aseries of operations upon a piece of work which is moved relatively thereto, a work support, a

carrier for said Work support, yielding connections between said carrierand said work support whereby said work support may ad-l just itself to the thickness of the work as the work ispresented to the machine, and means operating automatically to lock said work support to said carrier before the series. of operations begins, constructed to maintain said parts in the adjusted, relation during the series'of operations.

20. In a machine for performinga. series of operations upon apiece of work whichisfl a a work support, a,

moved relatively thereto, carrier for said work support, yielding. con

port to permit initial, relative adjusting movement of the work'support-and,the'care rier, means operated by movement of said carrier relatively'to said work-support before said series of operations begins to lock said work support automatically to the carrier, and means for thereafter movingsaid work support and carriertogetherf during said series of operations.

21. In a machine for'performing a series of operations upon a piece of work which is moved relatively thereto, a work abutment, a work support yieldingly held normally substantially in work presenting relation'to said abutment, a movable carrier for said work support upon which said work support is yieldingly adjustable as the work is between saidaabutmentv and said support, and meansrendered operative by initial movement of said carrier 7 said carrier in adjusted position, said means being constructedand arranged to maintain said GillIlGE-iifllld said work support lockedin adjusted relation during the series of operations. 1 I

, 22. Ina machine ofthe' class worki'abutment a work support, a movable carrier for said work support-upon which SillCtWOIfk support is yieldingly adjustable as the work isinterposed between said abut ment and said support, means'rendered -op-- erative by the movement of said carrier for for locking.

described, a

'85 nections between saidcarrier and said. suplocking said support to said carrier, and; I

means, comprising a spring, for effecting such movement and brlngmgclamplng pressure to bear upon the work.

9 In a machine of the class described, in

combination with the machine frame, a work support, a carr er for Bald work support,

yielding connections between said carrier and said work support whereby said work support may by the presentation of the work, means renderedoperative by a relative movement of be adjusted uponjsai'd carrier said carrier and said. support for locking said support to said carrier, and means cooperating with the machine frame for thereafter looking said support rigidly against movement. v

24, In a machine ofthe class described, a work abutment, a work support, a movable carrier for said work support upon which said support is yieldingly movableinto different positions of adjustmentby the interposition of the work between said abutment and said support, means operated by a relative movement of said support and said carrier for locking said support to said carrier, and means for thereafter moving said sup port and said carrier together,

' 25. In a machine of the class described, a work abutment, a work support, a movable carrier forsaid work support upon which said work support yieldingly adjustable as the work is interposed between said abutment and said support, means rendered operative by the movement of said carrier for locking said support to said carrier, and means. operating through said carrier for placing a predetermined clamping pressure upon the work after said locking operation.

26. In a machine of the class described, a work abutment, a'work support, a movable carrier for said work support upon which said work supportis yieldingly adjustable as the work is interposed bet-ween said abutment and said support, means rendered operative by the movement 01" said carrier for locking said support to said carrier, means operating through said carrier for placing a predetermined clamping pressure upon the work after said locking operation, and means for locking said carrier rigidly against move-v ment after said predetermined clamping pressure has been applied.

'27; In amachin'e of the class described, a work support, a carrier-upon which said work support is self-positioning to accommodate itsposition to the thickness of the work, connections between said parts tendingnormally to maintain those parts yieldingly in extended relation, a work abutment, means for automatically locking said work support to said carrier in the relation which said parts assume as determined by the thickness of the work, and means for thereafter effecting final work clamping relationship between the work supportand said abutment.

. In a machine of the class described which comprises mechanism for performing a ser es or operations upon work and means for effecting a relative feeding movementof the work and said mechanism betweenrsucces'sive operations, work support comprisingmembers relatively movable to adjust the support to different work thicknesses, of means comprising interlooking parts carried by said members for tionot adjustment for said operating mechanism be the combination with a automatically effecting such relative move ment and locking said members in the posi- Said series of operations before gins to operate upon the work.

In a machine of the'class described which comprises mechanism for-"performing a series of operations upon work and means for effecting a relative feeding movement of the work and said mechanism between successive operations, a work support, a carrier for said work support, means for moving said carrier from work-receiving to work-clamping position, and'connections between the work'support and carrier permitting movement of the work support relatively tothe carrier to adjust the work support to different thicknesses of work and comprising means'to lock to the carrier in adjusted position for said series of operations upon the movement of the carrier from work receivingposition.

30. In a machine of the class described which comprises mechanism for performing a series of operations upon work and means for effecting a relative feeding movement of the work and said mechanism between successive operations, a carrier, a work support mounted on said carrier for movement relatively thereto, means for intermittently lowering the carrier to release the work for feeding between successive operations of said mechanism, means for eliecting a final lowering movement of the carrier of greater extent than the wor releasing movement to permit the removal of the workfrom the work support, connections between the work support and carrier constructed and arranged to maintain the work support in interlocked engagement with said carrier dur-' ing the work releasing n'iovements of the carrier, and means'to release the work support from locked engagement with the carrier upon the final movement of the carrier to work removing position; V

31. In a machine of. the class described, which comprises mechanism for performing a series or" operations upon workand means for effecting a relative feeding movement of the work and said mechanism between successive operations, a carrier, a work sup port mounted on said carrier for movement relatively thereto, means for raising said carrier from work receiving position, means for locking the work support to the carrier upon the Work support c mg said locking means,

the cart er and work support intermittently to permit relative feeding movement of the work and said mechanismfbetween successive operations of said mechanism for automatically moving said releasing means to a position 'outof the path of movement of the locking means and maintaining the releasing means in such 'position during and means means for lowering the performance of a series of operations by said mechanism.

32. In a machine of the class described, a

carrier, a work support slidably mounted on said carrier, means mounted on said carrier and work support for locking the work support to said carrier, means for moving said carrier to and from work receiving position, and means engaged by said locking means upon movement of the work support to Work receiving position and operating to unlock the work support from the carrier.

33. In a machine of the class described, a carrier, a work support slidably mounted on the carrier, means for locking the work support to the carrier comprising interlocking parts carried by the work support and carrier constructed and. arranged to be normally in locked engagement with each other, means for moving said carrier to and from work receiving position, and means operating upon movement of said carrier to work receiving position to unlock the work support from the carrier. 25 34. In a machine of the class described, a carrier member, a work supporting member slidably mounted on said carrier member, means for locking the work supporting member to the carrier member comprising coop- 30 erating parts carried by said members, and

Copies of this patent may be obtained for five cents each, by addressing the means mounted on one of said members for maintaining said parts normally in looking relation to each other, means for moving 7 said carrier member to and from Work receiving position, and means operating upon 35, movement of said carrier member to Work receiving position to unlock the Work supporting member from the carrier member.

35. In a machine ofthe class described, a carrier member, a work supporting member 40 slidably mounted on said carrier member, means for locking the work supporting member to the carrier member comprising teeth formed on one of said members and a pawl carried by the other of said members normally maintained in looking relation with said teeth, means for moving said carrier member to and from work receiving position, and means operating upon movement of said carrier member to work receiving position to disengage the pawl from said teeth and unlock the work supporting member from the carrier member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' LOUIS A. CASGRAIN.

Witnesses: IRA C. BUoKMINsTnR, RAYMOND A. KNAPP.

"Commissioner of Patents,

Washington, D. 0."

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