US1692278A

US1692278A - Lasting machine

Info

Publication number: US1692278A
Application number: US83372A
Authority: US
Inventors: Arthur F Pym
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1924-03-10
Filing date: 1926-01-23
Publication date: 1928-11-20
Anticipated expiration: 1945-11-20

Description

Nov. 20, 1928. A i A. F. PYM

LASTING MACHINE Original Filed March 10. 1924 Patented Nov. 2o, 192s.

UNITED sT-Aras i ARTHUR r. rYMfor sWAM'PscoT'r, 'iviassiicz-insnr'rs,'assiGNoR 'ro UNITED *SHOE* MACHINERY coRPoRATioN, or PA'rnasoN, Nnw JERSEY,

JERSEY.

` LASTING rei-iiiv'r OFFICE),

A CORPORATION 0F NEW MACHNE-, l1

Original application filed March 10, 1924, Serial-No. (598,099.I Divided and this application filed January 23` 1926 This invention relates to lasting machines, and kmore particularly vto shoe-end-lasting mechanism, this application being a division ot `my co-pending application' for Letters `Patent for improvements` in the manufacture et shoes, Serial No. G98,G99, filed on March 10, 1924. The invention is hereinillustrated in its application to the lasting -of the toe ends of shoes, but it will be recognized that ity is not thus limited in its applicability.

An important object of' the present inventionis to provide improvements .in mechanism for operating end-lasting wipers, i. ef, for moving the wipers bodily lengthwise of a shoe and for swinging them toward or from cach other laterally of the shoe. `The construction herein shown comprises a simple and convenient arrangement of wiper-operating mechanism, vincluding a hand lever and separate connections between the lever and the wipers for imparting to the wipers the `different respective movements. Among other advantages, this facilitates the yprovision ot means foradjusting the wipersrtoward or from each other to adapt them to operate upon shoes of different widths, and the invention further provides novell means for thus adjusting the wipers comprising, as

herein illustrated, mechanism whereby one of the above-mentioned wiper-operating connections may be moved'independently oit the other to adjust the wipers for different widths. i o

A further feature ot the invention consists in novel means for effecting a relative variation between the extent of the bodily advancing movement of the wipers lengthwise of the shoe, and the extent of their closing or swinging movement laterally of the shoe, to adapt them to operate with the best results upon shoes of different shapes. In lasting the toes of welt shoes, for example, it is desirable that the wipers wipe the upper inwardly from the edge of the insole the same distance both at the end and at the sides of the toe. In order to produce the most accurate resultsfinthis respect, the extent'of the angular swinging movement of the Wipers, fora given extent of iseriai Nasaavz.

advancing movement, should be varied inaccordance with 4how closely the sides ofthe toe approach ka parallel relation-to the longitudinal median line of the forepart of the shoe. The invcntionprovides convenient and effective means toraccomplishing the desired result by varying relatively the ratesr of the wipers, the construction shown comprising a lever which is connected to the wiper-operat-` advancing and the closing movements of the A ing vhand lever and is adjustable in length to j vary the rate of the wiper-advancing movement.y i

The above and other features of the invention, including various novel details of construction and combinations' of parts, will o0 ment relatively to that.of:theclosinggmove-1M now'be more particularly vdescribed by reference to the accompanying drawings and pointed out in the claims.-

f VIIi the drawings, i Fig'. lis a plan view of a toe-lasting machine inwhich the invention is' embodied; A

Fig. -2 is a. section on the line II-lIy of i Fig. lgandV l i l Fig. 3 is a View in front elevation on a smallerscale of aportion'of the wiper-operating mechanism yshown Vin Fig. rl.

is tast on the frame of themachine and isl provided with a pint adapted to enter a hole toi-'med 'in the bottom of the last-L, as more Afully shownanddescribed in the co-pending `For positioning, i. e. locating or supportapplication of which this application is a di- 1 vision. It will'bel understood that'the last and. its shoematerials are thus held by the pin against pressure yot the lasting means 'thereon Ain directions lengthwise and laterallyio the shoe. The arm 2 serves as a hold down member, and the shoeis further suplported underneath and pressed lupwardly against this holddown member by' means of a toe rest not herein shown.

I v mounted at 6 on the frame of the machine are a pair of arms 8 .which are formed as extensions of a wiper head l0. The wiper head l() supports toe-embracing wipers l2, as will be more particularly eX- plained. As more vfully shown and described in the {zo-pending application, the wiper head l0 is connected to a treadle whereby it may be swung'upwardly about its pivots 6 to cause the wipers to wipe the upper heightwise of the toe and'inay also be swung downwardly `to increase the pressure ofthe wipers on the upper after the upper has been wiped inwardly over the bottom of the last.A p

The wipers l2 are detachably secured to wiper' holders 22 which are mounted onan extension 2l of al sleeve or carrier 26 (Fig. 2), which may alsobe termed a wiper carriage, guided for lengthwise movement inthe head V10. The extension 2-l is provided withan arcuateguideway, andthe wiper holders 22 have co-op'erating `guider ribs 28, so arranged that the wipers have swinging or closing movements laterally oit the shoe about a center or Aaxis located substantially` at the meeting point ott the edges of the wipers at the end ofthe toe.. For imparting the closing move- 'j ments to the wipers the wiper holders 22 are engages at one end a shoulderonthe lunger andat the other end an adjustablebus ing 48 which isthreade'din the sleeve 38. j The bushing i8 is splined on the plunger 40, so that by turning thefplunger, as bv use of a knurled head 50, the bushing is adjusted to change as desired the 'compressionofthe spring 46. The wipers are thus permitted to yield, for example', in upwiping the toe. To limit the extent to which they may yield, in order to provide for adequate overwiping pressure, lock nuts 52,011 the :plunger l() `are arranged to engagel thebushing 452.` i

The plunger et() is operated by a hand lever l54 pivoted at 56`on the head 10, the lever being connected by a link 58to a nut 60 (Fig. 2) which is threaded on a sleeve 62 mounted on the plunger 40 between the head 50 and a iied washer 64. The threaded sleeve 62 may thusbef utilized to adjust `the plunger l0 to swing the wipers about their center without advancing them, `.and thereby to determine their `proper starting position, the sleeve being held normally from turning by means of a friction m'ember`66 l).

I The handlever 54 is utilized to advance the wwipers lengthwise of the'shoe as well as to oted at 74 on the head l0 and is connected in turn to the wiper-advancing sleeve 26. rlhe connections between the lever 72 and the sleeve 26 comprise a block T6 secured to the sleeve 26 and guided in a slot i 8 in the head l0, this blocl; having thereon a pin 80 which carries a bearing block 82 slidably mounted in a'slot in the end of the lever 72. lt will be evident that as the hand lever 5d is operated to advance the plunger l0 and thus to impartswinging movements to the wipers to close them laterally ot the toe, it also serves through the connections described to impart to the sleeve 26 wiper-advancing movement the extent of which bears a predetermined relation to the extent ot the closing movement of the wipers.

It is usually desired, particularly on welt work, to wipe the upper inwardly for thel same distance from the edge ot the shoe bottom at the sides of the toe as at the end of the toe. To yaccomplish this result in the best manner a dii'iierent extent of angular swinging movement of the wipers, for the same extent of bodily advancing movement, is required tor toes of materially different shapes, for example, for pointed toes as compared with blunt toes. It is accordingly desirable Yto vary relativelyv the rates ot the advancing and closingl movements .of the wipers, and the machine herein shown is provided with means whereby such a variation maybe conveniently effected. To this end, there is provided means for adjusting thelinh 68 lengthwise of the lever 72 to change the etifective length of this lever. lt will be seen by reference to ,Figa 'l that thelink 68 is connected by a pivot pin 88 to a blocl 84e slidingly mounted in a curved slot 86 in the lever (2. 0n the head of the pin 83 is a slide 87 (Fig 8) Vmounted in a guideway extending transversely oit a block 88 which is mounted on an adjusting screw fOswivelled in bearing members 92 on the lever 72. By turning the screw 90 the link 68 may thus be swung about its pivot "F6 and its peint of connection to the lever 'Z' 2 adjusted lengthwise of the lever. lt is desirable that such an adjustment be made without affecting the position of the wipers relatively to the shoe at the critical point in the lasting operation, that is, when the wipers are closed about the toe in position to begin their overwiping movements, accordingly the construction is so designed that with the wipers in this position the center of curvature et the slot 86 in the lever 72 coincides with. the pivotal unisi() bij' the link 68. It will be evident that this adj listing means may be utilized not only to set the parts ttor wiping the upper inwardly to the saine distance all around the toe, but also tor wiping it farther inwardly, for example, at the sides than at the end of the toe, as may beV desired on some kinds of shoes..

separatev connections between the hand'lever 54 and the wipers for advancing and retracting the wipers bodily lengthwise of the shoe 1 and for swinging them ltowaid or from each other. It will .be understood that in operation the plunger 4()` and the sleeve 38 must not only move forwardly with the wiper-advancing sleeve `26, but must move faster than Vthe sleeve 26` in order tov effect the closingi movement of `the wipers, the lever 72 being so constructed and arranged relatively tov other parts as to .provide for such relative movementbetween the wiper-advancing and lwiper-closing connections. It will also'A be seen thatthe relation between theV rate of the;y

'advancing movement ofthe wipers and the rate of their closingmovement, andconsequently the relation between the extents ofV these different movements, Amay be readily varied by'adjusting the screw 90 to'change the effective length of thelonger arm ofthe lever 72..

In the operation ofthe wipers it is intended that the spring 46 inthe wiper-closing connections shall yield as the wipers. are closed about the toe preparatory to. the upwiping operation, so as to insure ,that .during the upwiping operationthe wipers .will bear with effective pressure on the sides `of the toe while they are heldy by the wipereadvancing connections against theend ofthe toe. VIn

the operation of wiping the upper inwardly over the feather of the insole of agwelt shoe the spring 46l will yield until oneH of the nuts 52 engages the bushing 42, so that the final applic-ationI of the overwiping pressure against the rib of the insole will be positive at the sides of the toe as Vwell as at the .end of the toe. By turning the plunger 40 the f tension of the spring k46 may be readily varied without affecting the posit-ion of the wipers; and. by turning thesleeve 62 the plunger 40 may be adjusted lengthwise to swingthe wipers about the-axis of" their closey "ing movement and thus to adjust them for v power-operated machines.

shoes of different widths-without affecting the connections whereby they are advanced lengtli'wiseof` theshoe and vwithout affecting the tension of the spring 46. lhile the "nvention isherein illustrated in its application to a machine in which the various movements are effected manually, lit will be understood that in various novel aspects the invention is likewise applicable to Having .described my invention, whatwI claim as new and desireto secure by Letters Patent of the United States is 1. In a lasting machine, the combination with shoefpositioningmeans, ofA end-embracing wipers, a. hand lever, and'separate connections between said lever andthe wipers for advancing and. closing the` `wipers .respecv tively. Y f It will thusbe seen that/there [are provided l 2.'In axlasting machine, the combination with shoespositioningmeans, of end-embracing Wipers, members for: ini-parting to saidy wipers advancing and closing lmovements re` spectively, a hand lever, an operatingconnec-k tion between said hand lever and one ofsaid members, asecond lever connected to 4the yother of said members, andan operating connection between thehandlever andsaid sec ond lever.

. 3. In -a lasting machine, the combination with shoe-positioning means, ofV end-embracrespectively, and a handlever separately con- 'j ynected to said sleeve and plunger. v j

y5. In a lasting machine, the combination with shoe-positioning means, of end-embracing wipers, a hand lever yieldingly connected tosad Wipers for closing them, and separatev connectionsbetween Vsaid hand lever and the., wipers for impartingtoj them positivelyadvancing movement.

6. In a lastingpmachine, thek combination Y with shoe-positioning* means, of end-embracing wipers, a handlever, and separate connections operatedby said hand lever for imparting tothe wipers advancing ,and closing movements respectively, one of said connections including a .member` yieldable` in response to pressure of the wipers against the lslice and having means for limiting its yield.

, 7. Ina lastingmachine, the combination lwith shoe-positioning means, of end-embracing wipers, a hand lever,`and`separate connections between said hand` lever and the wipers for advancing and closing thewipers `respectively including means for adjusting the wipers in the direction oftheir closing movement without advancingthem.

8. Ina lasting machine, the combination 'with shoe-positioning means, of end-emb-racn ing wipers, a hand lever, connections between said handlever and the wipers for imparting to the wipers advancing and closing movements, and means for adjustingsaid connections to vary'v rela-tively the rates of said movements.

9. In aflasting'machine, `the .combinationV with shoe-positionig means, of end-embracing wipers, a hand lever, andseparate-trains of I mechanism operatedl by saidrhand lever for Vsaid lever..` .Y u

`imparting 'to .the `wipers advancing and closing movements respectively, one of said trains of mechanism comprising a second lever with provision tor varying its eective length lto yaryrelatively the fratesof advancing and `closing movementfoffthe Wipers.. i 10. In a lasting machine, the combination c with sliee-positioning means, of endfembracing Wipers,` a hand lever, separate trains-of iii-echanism operated by saidv hand level' for imparting tothe Wipers advancingand ,closing movements respectively, one of said trains of mechanism comprising a second leverand a link connecting it to said hand `lever,and Vmeans toi adlusting said `link relativelytothe second lever to vary the effective length of 11.- In a lasting machine, the combination with shoe-positioning means, oit endemb acing Wipers, and operating means for imparting to said Wipers advancing and closing movements, said operating Vmeans` being justable to vary relatively the rates of said Vadvancing and closing movements of the wipers ivithoiitaffecting theirelation of the edges of the Wipers to the shoe at the point Where said edges begin to Wipe the upper inwardly over the/shoe bottom. f i 1 l2. In a lasting zinachine, the combination with shoe-positioning means,of end-embracing Wipers, and operatin'gineans or'imparting to said Wipers advancing and closing movements in predetermined relation, said operating means comprising parts relatively adjustable to vary relatively the rates of the advancing and closing movements of the Vvwipers including a member pivoted `for fad respectively, one'ot'said trains ot mechanism comprising parts relatively'adjustable to vary relatively the rates oi' the advancing aiidclosing movements oi' the Wipers and constructed to ei'iect such change ofi-ate Without altering' the relation of the Wipers to the shoe at the point vrlieie the Wipers begin to Wipe the iipper inwardly overtheedge of theslioe bottom.

le. In a lasting machine, the combination with shoe-positioningmeans, of end-embracing Wipers, a hand lever, separate trains of mechanism operated'by said Vhand level' for imparting to the Wipers advancing and closing movements respectively, one ofi saidtrains of mechanism comprising a second lever. and a linlrconnecting it to the hand lever, the con- 4nection betiveensaid second ylever and link being adjustable in an arc the center of'ivhich meaaavs coincides with the pivotal connection of the link to the hand lever Vwhen the Wipers are sii'bstantiallfyzatthe point Wlieiethey begin to Wipe the `upper inwardly ove'rtlie edge ofthe i shoe bottom.

T175. Ina lasting machine, the combination I"ith shoepositioning means, of ciid-einbracn ing Wipers,and-meansfor eiecting advancing and closing movements otsaid wipers coinpnisinga lever for efecting both oit said movevnients,fa second lever arranged to bo utilised in efecting one .of saidmovementsand an operating-connection between said levers.

16'., In a lasting machine, the combination -iv'ith shoe-positioning means, oi' end-embracA `ing lwipersand means for eiiecting advanciiig and closing movements oi said Wipers comprisinga lever for effecting both ot said movements, a second lever arranged to be operatedby the first lever to el'leetone of said yn'iovements, and means for relatively varying the .efect-ive lengthsot saidlevers to change the relation between .the rates oi" the advancvingand closingmovements of the iviper 17. In a lasting machine, the combination with shoe-positioning means, ot end-embracing wipers, and wiper-operating means coinvprisingmembers vmovable lengthwise oi'l the shoe for advancing and closing the Wipers respectively, an operating lever, and separate operating connections between said lever and the diiierent members.

18. In a lasting machine, the combination with shoe-positioning meansof end-embracing wipers, an operating lever, and separatel u connections between said lever and the ivip- Y ers Vfor advancing and closing the Wipers respectively, one of saidconnections,being posiwipers. i

y 19. Ina lasting machine, the combination withshoe-positioning means, of end-embracing wipers,V anV operating lever, and separate connections between 'said lever and the Wip ers for advancing and closing the Wipers respectively, one of said connections being positive and the other yielding in its action on the Wipers, and means for rendering said tive and the-other yielding in its action on the 'other connection positive in the iinal application of the wiper pressure. i

20. In a lasting machine, the combination With shoe-positioning means, of end-embracing Wipers, and means for imparting closing `movement to said Wipers including spring means arranged to transmit movement te the Wipers and to yield in response to resistance of the shoe, and members' arranged 'for positive engagement with each other to lii. it said yield While said spring means continues its `action on the Wipers.

2l. In a lasting machine shoe holding means and wiping mechanism,the latter com- "prising Wiper plates movable as a whole to-V ward andfrom the shoe and simiiltaneoiisly sivingable toward and from each other, and

lll)

connections for actuating said plates comprising a carriage supporting the wiper plates, an operating member or handle, a connection from the handle to the carriage, and a connection from the handle to the wiper plates adapted to eeet their swinging movements.

22. A lasting machine as in'claim 21 and wherein the operating lever has sloW actuating connections to the carriage, and faster 1U moving connections to the wiper plates.

23. A lasting machine as in claim 21 and wherein the operating member has actuating connections to the carriage and other connections to the wiper plates, and means for initially adjusting one of such connections to set the plates toward or from each other according to the shape or size of the shoe.

In testimony whereof I have signed my Y name to this specification.

ARTHUR F. PYM,