US969244A - Last. - Google Patents

Description

` R. CARL.

LAST.-

AQPLIOATION FILED mn. 1e, 1910.

969,244, l Patented sept. @1910.

2 SHEETS-SHEET l.

R. CARL.

LAST.

Patented Sept 6, 1910.

2 SHEETS-SHEET 2.

mresses RUDOLF CARL, or BUrrALo, NEW Yonnj l specificeren-of Letters rateiit. ,Patented Sept.

Application nied'riarch 1e; .1910; serial N b; 549,686.

To all wwm it m-ay'lconcern: f

Be it known that I, RUDOLRCARL, aciti- ,zen ofthe United States, residing .at Buf falo, in the county ofErie andjStateof New. York, have invented new and luseful Imrovements in Lasts, of which the. followd ingis a specification. This intention relates -to that class o'f lastswhich are capable of folding to permit of thereof. v

lGreat ,difficulty vhas .been-experier'iced heretofore in keepiiifr'thefront or toe'sec-4 llieel section'of the last 1n alinemeut inasmuchas the pressure -toinserting -the sameinto a shoe and'removnig the same therefrom during tlie manufacture tion and the rear-'rorwhich tlieshoe and the'last is subjected by the lex-'elingmachine which tends to wear the connections between the. last sections'. vei"y rapidly; lVhen this wear becomesV p ronounced 'it is necessary to "discard j thela-st if accurate workmanshipis desired.

When cutting v'the front 'and rear sections of therlast from thesanie piecelof' wood in sucli manner that one pa-rter' section has an integral curvedknuckle .Which'turnsin correspondingly shaped socketin the other Apart orsection, these parte, -when assembled iiithe manner hereto a filling pieceor shim to `be inserted in the joint betweenthe knuckle'and'socketto comv pensate for the material which is removed ytlie"'kerf or cut offthe saw which sepa',- rates. thev two sectionsof the last from each other; "This not.1oiily"cinvolves. 'additional cost' in the manufacture of thela'st but also renders it practcal'lyimpossib'le to secure -a perfect bearii'igkofA the knuckle in the can bear vf i'rrnlyagainst each other without' One ofthe.j objects of .this invention is' to produce Yaklast" of this cha'racter in which the'front-aiid'rear sections are-separated in suchmaiinerthat'the knuckle and socket the necessity of employing any filling pieces .Anotherobject of'tliis invention is to .ie-

' inforce the last: sections while .in an iin-- -.--foldedf,conditionso'as to. more efectu'ally reSistlthe-strains or pressurestowhich theyA A ;,n'etsubjected by the leveling ;or other maiiiinesduring the operatioiiof building a the' same.

invention has, the: further obieet to orejpracticed, require f folded fpositiona'nd aids in' resisting the de? l struct'ive action of .the leveling Amachine,

which can be readily unlocked tol "permit of folding' the last and removing the slioe therefrom land- 'which is automatically 'shiftedint'o its operativev position for holding'the last 'sections in an unfolded position. In 'the accompanying drawings consisting of 2 sheets Figure l isa 'side elevation. show 'ing one form'of my improvements embodied 'in' a folding 'la-st. Fig'. 2 is a vertical longi-v 1 tudinalsection thereof.- Fig. 3 is .ahorizontal section takenxin linev3-3, Fig-f1. Fig. 4 1s 'avert1cal transverse section taken 1n side elevationjshowing amodification of my y improvements. Fig. 64 is a vertical transverse section in line 6-6, Fig. 5.' Similar letters ofreference indicatecorf responding parts throughout the several views: A 'and' B represent the 'front-ion toe sec' tion and therearA or heel section, respec-f tively, of the last.- Tliesetwo sections are *cut from a single piece of wood and piv.- yotally connected with each other, so that they may be folded relatively to each other yfor inserting the same into a shoe or removing the saine therefrom kand unfolded while.

iii the shoe'so. as to properly support the In forming the last a substantially V- shaped gap is first cut into thetop part of the wooden block from which the last is made -so as'tofform a clearance'space which permits the l-ast-sectionsto fold toward each other o n their oppositesides. The two last sections are then separated from. each other so as to form a pair of forwardly projecting' integral curved. knuckles I) on the vfront end of the rear section between the top and bot` tom thereof, and apair of curved socketsc which are arranged en -thev rear end of thefro'nt section between the top and bottom 'thereofand wliich receive the 'knuckles of the rear section. 'The front and rear sections of the lastarey preferably -pivotally connected .with eachother'- by means of" a .same while the s0le\is beingapplied to'the pivot screw 'liayinga` vertical flattened eircular eye d-'arranged centrally 'betweenthe sockets fof the-.frent last section and the .knuckles of thefrearglast vsection and provided with laforwardly projecting screw hreaded'shank D 'which-1s secured iii-thev fx-ear end' of the front 1ast.sec tion, 'and ifo ` pint-le or ivot pin e 'extending' transversely 'is then made from a poi-nt adjacent to the lower front corner of the gap a, to a point a short distance in rear of the hole f. Alower n'iodilied, assliown in Fig. 5.

curved saw cut 71, is now produced which extends frointhehole f downwardly and rearwardly below the. pivotal connection between the lastsections, this cut being produced by irst passing a Saw through tlieliole f and Working from thence downwardly and rearwardly to apoint below thelast pivot. A`sb'stantially upright saw-cut a' is now produced4 which beginsat the underside of the last and 'terminates at its upper end in rear of tie lower curved saw out h. After the blo'ckhasbeen thuscut the same is sub` jected to sufficient pressure to produce a .break or fracture j between the hole f and the lower end of the upper curved cut g and another break or fracture -c between the rear end of the lower curved cut h and the upper end of the straight-or upright cut i. It follows from this construction that when-the two last sect-ions after being pivotally conlnected and assembled and straightened or unfolded into their normal osition the broken joints j, c engage direct y with each other and form ositive stops which fit each other perfectly, inasmuch as no material has 'en removed at these pointsand the two arts'of the last are united exactly along the vline of fracture which was produced upon breaking' apart the two sections of the last. By this means'the two sections of the last when fullyv unfolded assume a relative position whichis absolutely accurate and-these parts of the last are held in this position during the operation of .building a shoe thereon, thereby insuring perfect workmanship. In other words by producing the cooperating shoulders j, c by breaking the last.

sections apalt, these sections tit each other accurately and the bottoin of the sections are always kept even or flush in the unfolded position of the same.

Instead-of employing a hole f in the last fondividiug the curved cut of the joint between .the knuckles Aand sockets into two pai-ts and forming two pairs'of integral stop shoulders ou each side of the last, as shown i ii 4Fig. l, this cutting operation inay be In this last mentioned figure only a single curved cut l iseinployed, the sanie extending'in a curve corner of the gap forwardly, downwardly and rearwardly to a pointI below the last pivot and terminating short of the upper end of the upright saw cutm. In this 'case the two sections of the last are broken apart only-on the line 'n between the curved saw cut l and the straight sawc ut mandwlien the lastsections arestra-iglitened the saine engageleach other directly bythe stop faces at -the single broken joint n..y

The bottom 0 of the gap a is cutionfa curve of smaller radius than ,the other curved parts of the cut between the two last'sections so as to fornil a rearwardly facing shoulder!l 01. between the curve .0 and the adjacent curved `cut `g ofl larger diameter. :This shoulder o1. is in line with the upper -reai' 'face of the front last section and in the' unfolded condition 'of the last, is engaged by tliel wereiidof a platef P which is secuitd radi. lly or substantially s0 to the upper part of the rear end of the front last section by screws p, shownor otherwise. The plate P and shoiildero1 therefore serve as an additional stop orfsupport which prevents'the toe part of the last Afrointip-v ping up and the opposing bottom ,portions of the last from being pressed out of line Vwhen the leveling machine rolls over: .the

bottoni ofthe last during the operation of building a shoe thereoii. This plate vmay he set in a recess f/ iii the iippeiupart o f the rear end of the 'front last section so that its rear side is flush with this end ofthe. last, as shown in Figs. l and 2,-. or Ythe, front last section inay'be iinrecessed'andl the plate secured thereto with its front'side flush with the rear end of the front last section, as shown in Fig. 5. l

The lower or inner edge of the plate P bears against the upper side of the knuckles, thereby su porting the knuckles and preventing splitting of the saine., This plate also takes up the slack between the upper parts of the knuckles and the sockets due .to the upper part of the' sawcut g between the saine, thereby holding. the. last 'sections rigidly iny place relatively to each other and relieving the pivot pin e of'undue strain.

Centrally on the loweredge of the plate cess r which receives the upper peripheral pai-t of the eye of the pivot screw. .By this ineaiis this plate isy causedI to straddlefthe screw eye and hug the saine tightly, whereby out of place and the front andrear sections of the last are held tightly in' place and pri-.vented iioiu wiggling, relatively to each other@ r f Various iueaiis may be provided for lockthe pivot screw is prevented'froin turninging.v the last sections in tlicir unfolded position. Figs. i4 comprise a ,vertically swinging from a' point adjacent to the lower front latch S pivoted at its rear end to the rear Theineaiis foi-'this purpose shown in n 1 last-nse'c'tioninear 'the top thereof while its 'front end projects into a cavity s formedl in underside the y -u which isadapted to receive the plate P, at

raiding@ the plate, and shouldersfol, j, lc, in' lresisting-the tendency. of thezlevelin'g ma?. .-chine'to crush,'b 'reak' ordistort `the last l.while ,-the latter is against the bottoinof the saine.'

' l time of the Workman'which would otherwise opposite sides of the .plate P, thereby 'not only-holding the last section sin their un- 'against `further movement-in the direction ment with the same -both when'the latch or unlocked therefrom, thereby maintaining 'tively to .the Plate fOI .interlocking'.there- '\vith. Y A

`by 1a spring" device which preferably con- Aof a'gui'de way'or socket'V formed' in the the resilience of the spring/w1 acting against the follower o causes the latch to be de-4 e :pressed so. that lts notch engag'eawith the 'ducing the cost of manufacturing shoes acoperative position in engagement with the 'ated catchor detent device w ,which is pivthe -opposing partA of the front -"last ',section. The front end of the latch 'is :adapted to' engage with anotch t. formed centrally inf the upper 'ed e ofthe plate P and on its atch is provided with a notch the bottom of the notchft. .'VVhen. the last sections are unfolded fully the .latch maybe depressed -so that its notchl engages "with folded position but also holdingthe same in which thesectionsare unfolded, thus andthe last is supported at, the heeliand toe part.- Thenotch in the'` plater` which re#- ceives the latch isvpreferably of such depth that the la'tchalways remains iirengage is interlocked by its' notch' u' with' the plate the latch always in the proper position rela- For the-purpose of permitting the last-.to he folded the latch is raised so that its notch fuy isl disengaged 'from 'the plate P. :After the ylast `sections are unfolded the'latch may be rengaged with theiplate P for holding.v

the sectionsinlthis conditionzlby sim lly however, is preferably effected automatically sists of afolloweruguided'in the lower. partupper rear part-of the front last section 'and bearing .against the. upper side of the latch at thevfront end t-'he're'oh a plug/w closing the outer end ofsaid guide-way and a springA 101- arranged in -said guide-way and bearing` at itsupperend against the .plu while its lower end bears 'against a flower. `The instant the notch of the latch is ar-' ranged inline-with theupper edge" oft-he plate P upon unfolding the'latch' sections locking plate, thereby effecting t e locking of thelatch automatically and ving the be required for this purpose, therbby .facili-l tating th'e manipulation of the last and l1e cordingly. e

If .desired the latch may be held in its locking plate by means of a manually operv comprisin :part whicis roken. '2;.A lastcomprising front andrea'rlpiv- -otall-y connected sections,one of 'said sections.

oted to .swing transversel at its :upper end on the u per rearpart o the front last sec;-

tion whi e itslow'er end maybe moved lat'- 'erally 'into-*a position over the latch forholdlngthe'- same'in place, as'shown in full.

llines inv Fig.- 6, or to.' one side of the latch,

as shown by dotted lines in the same figure.

-My mprovedlast is verymuch stronger thanthelasts heretofore in use, it is not liable to break down and become useless vunder thesevere strains to which-the same is subjected, it can be produced at compara-` tivelylo'w' costaud can. be manipulated very quickly, 'thereby effecting' a considerable savin -in the-maintenance of lasts, and also elfectln a material saving in the time of `.1;A,last comprising front-and-rear pivotally connected sections, one of said sections having-.a circular knuckle and the other. a circular socket which receivesfsaid knuckle 4said sections-being constructed `from a single block and the jointbetween said sections art which is cut- -and another havingla circular knuckle-and the other a circular; socket which I receives said" knuckle v said sections being construct'drrom a single -block 'and said .sections-having 4some parts `thereof in the jointbetween the same' engaging with eachfotherf; whileother. parts in said joint. are outjof engagement witheach other.

A lastcomprising lfront 'and rear piv-' .otally connected' sections, said-sectionsubeing -separated atfthe top 'by a gap and said ,rear

sections having "a curved knuckle and the prising acurvedeut terminating. below the .pivotal c'onnectionjbetween' said sections, an ,upright cut extending. upwardly from. the bottom of the last, and a brokenpart .extending from 'the curvedcut to said upright i cut.

otally connected'sections, said sections lbeing separated at thet'op by a lgap and "said rear sections havin 1f acurved .'knuckle and the front ajcurve socket which receives said knuckle, the joint betweeifs'aidsections comprisi'n an. opening arranged infront of the 4. Alastcomprising front and rear piv-V 'front a curved'socket which receivcssaid y knuckle, the joint-between said sections compivota connection between Said Sections, an

upper curved cut extendin fromthe'front side -of said gap' downwar y and -terminatf ing in rearjof said opening, a broken4 part extendingfitomthe lower end of said upper curved cut to said opening,'a lower curved cut extending downwardly from said opening toaoint below the pivotal connection between t e last sections, an upright cut extending-,from the bgtto'm of the last uplac wardly, and a broken part extending from the rear end of salid'lower cut to the upper end of said upright cut.

. 5. A last comprlsingy two pivotally connected sections which are 'separated at the top by a gap andone of said sections having acurved knuckle which' is provided with a shoulder adjacent to said gap, and the other section having a curved socket which rec'eives said knuckle, and a plate 'secured to the last section having the socket andv adapted to lie-engaged by the'shoulder of the knuckle in the unfolded position of the last' top by-a gap and one of said sections having a curved knuckle which is provided with a .shoulder adjacent to said gap, and the other section having a curved socket which rej ceives said knuckle, fand a radial plate securedtofthe last section having the socket and engaging with the periphery of the knuckle vand adapted to be engaged by the shoulder of th'e knuckle in the unfolded position of the last sections. v

' 8. A last comprising two pivotally connected sections which are separated4 at the top by a gap and one of said sections having a curved knuckle which is provided with a I shoulder'adjacent to said gap, and the'other section having La curved socket which receives said knuckle, a pivot screw having an eyearran ed axially in line with said socket and knuc le and. having a screw shank which is secured in last section having the socket, a pivot pin 4extending through said eye and knuckle, and .a plate secured to one of the last sections andhaving a recess in its edge whereby the same engages with the peripheral part of said screw eye.

9. A last comprising two pivotally'connected sections which are separated at the top by a' gap and one of said sections having a curved knuckle which is .provided witha shoulder adjacent to said gap, and the other section having Va curved socket which receives said knuckle, -a plate securedtm one of; said last sections, and a latch pivoted on adapted to engage with said plate.

10. A lastcomprising two pivotally connected sections which-are separated at the top by a gap and one of said sections having a curved knuckle which is provided with a slibulder adjacent to said gap, and the other section having a curved socketwhich receives said knuckle, a plate secured to one of said last 'sections and having a notch and a latch pivotedpn the other last section and arranged in the notch of said-plate and having a notch which receives the plate at the bottom of said notch.

11. A last comprising two pivotally connected sections Which are separated at the top by a gap and one of said sections having a curved knuckle which is provided witha the lother last section and; having a notch l shoulder adjacent to said gap, -and the other section having a curved socket which receives said knuckle, a' latch for holding said last sections in anunfolded position, and a pressing device which tends to constantly move said latch into its operative position.

12. A last comprising two .pivot'ally connected sections which are separated at the top by a gap and one of said sections having a curved knuckle which is provided with a shoulder adjacent to said gap, andthe other' section having a curved vsocket which receives said knuckle, a plate secured to one of said sections, a latch provided on the other section, and a pressing device for holding said latch in engagement with said plate comprising a follower b'ear'ing a ainst said latch and arranged in a ide soc et in the adjacent last section, a p ug closing the outer cn'dof said socket, and a spring arranged in said guide socket and bearing at its opposite ends against said plug and follower. l

Witness my-hand this 12th day of March,

RUDOLF .CARIl lVitnesses THEO. L. Porr, ANNA Hitlers.

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