US1660478A - Divided last - Google Patents

Description

Feb. 28, 1928. 1,660,478

G. P. S. CROSS DIVIDED LAST I Filed May 2. 1921 Patented Feb. 28, 1928.

' (UNITED .;S:I'ATEfS PA OFFICE;

ARRET E- 3?. -'S,..' GRO,SS,' or sw mrscom, mAssAclwsnms, ssxenon :ro NITED snoz: *MAGH-INERY eonromuniomor PATERS N,-;NEW JERSEY, A'EORPORATION'OFN'E'W "DIV-IDEDcIe-AST,

sernlisetien le my .2, 19.21.. eerie: 3N0, $55,951.

te em ns lu'ndistu hesl sh e, to pee -"m l jhee ing 1. .11 fleck, e -eexemple,

ne o .the mes ed eehi e ene in rea ng :the requi te s mplie y, lehee-pnes enfl li bi i y ne e y in I ueh e lest wa gre ded by e les nvente by il am e; eer en des rib d and eleimede nUn te States Le ters 1 13 11 Ne- M 22 7, ge nted :Oet- 92%01 his eppliee ienli is e princ pal ehj eh ef the Pres n inv nt e s il e -he :to improve di ide slee -s 9f th ype dis l s d nese d Let ers B zene whil retaining the advantages thereof.

Accordin y, impeetee eatu e-le lep ng he l steemlvpeefeeeh y f ver ee u lly e Pe et-i g th Jest Peres :e e lnee den -e h m ing, by v e-"me e :relet e lete e o wi newmvemen f h lee mpert e {120 his n eh illu rated ben ing e nlp s ho k end he pee eeeh y en e iele with two oppositely facing h0Ok$,.;QI 1 8 in each last part, facing suhstgntially parallel to h la t lpe iphe y in -thetene eghhe heed, and separable by a twisting v lgvellmnl', @f em 1 ne 1erext ne Ad ent ge elyeue ndieg'meens is eted :nee t p riphy he le in o der t et :m m m twist may effect-$ e reqgieite movement in thehondlng means.- 7

I ee dneewi h en e er mp ant e f-e2 hlre e the nv nhiem eth b nd ng e ns i ied eMieey i t e uppe pee-t eth lest, end p eeh y he eseeeie ed-w eh an normallyeme n ng'epe :tie :e the nd g m enis its eeellepse eese- Efh e ti n f the b nd ng m eee, ee Wi h p in d ete ei ets eemezeimum Lei e en e e e e nie ith min mui ee bendi g s u ture lh .s en meneie d mean in :ee edenee w th z ne eher :ieetue th ntie lbe e ndeeed ainepe lh ve by e r a ve e ep ei hly epe eiz eeelemeve-e mentl f ehelest pee ts hi the i et-tom of :the

looseness of the parts when bond d l @he eh p- These and ethe i ures e ethe invention leempri ing ee t in combinations and warre gementsefi p r s willbe und rstood frem the following description of a preferred embod ment thereof selected forepurposes of iillustre ien and shown. in .the eeeompanying drewingsin whieh, r s

,1 illustratesethe lastust. after the: dis- :engegemen of th Le vp r Big 12 1 BW=Df feherhondi grand its 00- ep r t eg means, looking firom-irenteztorear,

th main moved.

zEig- 3 eh w th 1=ie eperetendehoe eep eetieh f em t e heel Per e ehligebsh wsethe h el part1.

,5 isaese tie Q'ffl' he bending rmeans e l the1il e f ig-2. I

Fig, Gillustmtgsihe angle about.

illu trate ee iselivided by Lfl subes e ie ly plane u ex ending :preferably upward and fQDWard,aI1d llQh :that the last pe tien :Qf "the xforepart being ireaifter il 1 .lel gjthen somewha t as .the g'pa-rts are; slid WflWfiQhflt rlIl 0 op ve ipesiitieneleng lg het plalney Tlj he seczynt faces are advantage us y ee e d with m tallic plates to se- :Qu i st ength en :eese 01? Operation, and "to :Q- th as p r-te- 1, 116 .91 ipill rl 10 s ie ecl with he 21 211 lillusteeted Rlet is -pre-v ded wi h a, woun Lme e e 20-e 1e d as e e eml y extending heeh, This heek i :eeeeh re in the hee hy :eny eeeve e but strong m e eseeh e 2 fienge serew- 22, and is pe efe e ly peew d d wi h sheuldee he hol th pl-ee e 2 the hee part. A spot 0, lemes ieh shown at h pp P the 'seeele eere es eempl teyie desi edy n th finish flfhe. i lzepeet 2e i previded with e'e'inli- Jerp e zffi. fi steee en'W- thuit ble/screw 2%, The p et pe u d d: with. hole .30

eeee e eene-w eh an fit iilgi'thg b ss 18, and e ey hel p l peete e32,- the lower elne l e e f Whi eh .regiet ie with. and fits the. "bee when th pa m are in oper ti e llewila ee sees; g-e12, The Wood; oi

andengages the hook when the last parts are inoperative position, and is provided with a flange 10 which anchors the plate 26 and a shoulder 42 engaged by a screw 4A to anchor the hook. The hook36 occupies only parts is the two hooks in thecone, which last-parts are disengaged by a relativeroone side of the hole 88, the hook 20 having ample clearance to enter and engage the hook 36. A spring pressed plunger 46in a hole 48 in'the plateQG registers with the spot 25. y 5 i As shown in Fig.6, the cut is preferably not perpendicular to a vertical longitudinal plane in the last, but is canted considerably to one side soas to be perpendicular to the instep ridge. This structure enables the screw 44 to be driven perpendicular to the plate 26 straight into thecenter of the instep ridge to anydistanee requisite for strength.

i The onlyhondingmeans between the last are amply strong to hold the lastparts in positionwhen-inverted on ajack supporting it at its ends, in which position it receives the severest machine shoemaking, stresses, which aretherefore only such "as =toplace the bottom o f the last in compression. The

tation or twist about t-hepivot l6 in the end of the hole 32. This twisting movement is normally prevented bythe interfitting boss 18 andhole 30, the'plunger fcGhOlClll'lQ' the low-er parts of the plates in contact and accordingly the bossan-d hole inengagement, when no shoe is on the last. The plunger 4 -6 and recess 25 also cooperate to prevent twisting and separation of the last parts'in case the boss-18 accidentally comes out oftlie hol'e'30, as might occur if the last were dropped when it hadno shoe on it. There is enough looseness in theconne'etion, however, to permit the boss 18 and. hole 30 to be d1sengaged by the application of a bending stress in a. vertical plane. hen the last is in the shoeQthe tension of the upper, which may have been previously formed, normally "keeps the bottom of the joint between the last parts tightlygclosed. When the last and shoe are inverted and placed on a jack pin (see Fig. 1), the bending stress mentioned is easily applied by pressing clown on the toe. This releases the boss 18', the thickness pf which need not "be over 0030 or 0.040 inch, and pushes in the plunger 46," bringing the upper edges of the plates Band 26 together. The operator canthen, without re leasing his grip on the shoe, twist the forepart' around the pivot '16 until the hooks 20 and 36 disengage, This position is shown in Fig.2, in which the wooden part of the removed leaving only the -.clearance in the broader part of the hole 32,

which, in the reverse operation of inserting theheel part, serves as a guide for the boss 16 to locateit properly at the small end of the hole 32. The fore/part of the last is not disturbed in the shoe bytheremoval. There is a considerable advantage in this type of relative n oveinent between the shoe and the heel-part, since the lower and widest portion of the heel part-passes through the shoe by a forward and upward or a backward and downward movement; and thus does not have to force itsway through the upper rear "counter portion of the shoe, where the counter is narrowest and stiffest. The heel'part may be replaced by a reverse operation, as suggested. This reverse operation, owing to the shape of the out between the last parts,

will effect stretching action on the upper due to thefactthat the last extends in length somewhatas itspa'rtsmove into operative position. I

The boss 18 is preferably designed strong enough to carry not only any twisting stress but any shearing stress occurringin the i'shoemaking, tending. to slide one last part on the other. The hooks or other similarly situated bonding members therefore have only to carry the tension due to the action of the last as a beam, and accordinglyrun a minimum risk-of becomingrramped or jammed. V y

The boss '16 is not indispensable. The boss'18 and its closely fitting hole 30 are entirely capable of hold ng the last firmly againstthe twisting movement which propares it for collapse. The boss or pin '16is a convenience in eli'ecting the twisting and unho oking movement, providing a definite pivot removed from the hooks, so that the operator merelyhas to twist the parts relatively and the hooksmust disengage, The

last could, however, beworked without it,

somewhat less conveniently.

The secant face on one of the last parts is a smooth metal surface except forthe pro ection 46, which is not unyielding. This fea- 'turefgreatly facilitates the movement of the forepart and heel part over each other as there is nothing'which can catch and lock lUU lli)

on the projections of the other last part ex 'cept the holes into which the projections are intended to fall operatively. The element 46 has herefbeen placed in the forepart because of the scantiness of material in thelocality marked 10 in Fig. 1.

The location of the bonding means near the periphery secures the maximum looseness at the opposite part of the out between the last parts for agiven closeness of fit between them. This looseness is here utilized as a characteristic of .a locking means. The peripheral location otthe bonding meansalso secures .the maximum relative movement of the bending elements for a given relative disturbance of the heel part and the forepart, and the formation of the bonding members integral with the last parts makes .th'emirelatively disengageable by amere relative movement ofthe lastparts, the operator not being obligedto grope afterand to adjust movable parts. Further, the locationof the bonding means in the upper part of the last places it just where it is needed to take the bending stresses impressed on the'last'by machine shoe-making most economically with bonding members of minimum size;

where the looseness in a lasted 01' formed upper as compared with conditions nearer the bottom .can be utilized to efiect easily relativemovement of the-bondingmember s when desired ,and where any accidental failure to operateis most'ea'sily ascertained through the open 'top of the shoe and remedied.

A valuable feature of the invention con sists in therelative locations of the bosses :18

and 16, in connection with "the direction of relative twist required "to operate the bonding'mechanisin. The boss 16 isnear oneend of the boss 18,-and the direction of twist is such as relatively to displace the boss 18 and its slot 30 in the same direction as they tend to move during "the heel part removing or replacing movement. Fig. 2 illustrates this point. Inthisfigure the twisthas' been'per- It the twist were in the other directiohythe far ends of 18 and 30 "would be relatively displaced oppositely and the upward movement of the plate 26 would carry the far ends of the boss and slot backover one another, where they would tend to catch, and impede the heel part removing operation. The same advantage is found in the reverse operation. The twist lock or rotary shearing move ment used in operating the last parts has a distinct advantage in that the relative move-' ment of the last parts does not require so great a relative displacement of the last parts and the stiff parts of theshoe asdothe movements of a last which collapses about a horizontal hinge or whose bonding mechanism has-to be thrown by an initial relative sliding movement of the last parts. 1

Further, the relative ."twisting movement is one which is unlikely to be impressed-on the last by accident.

Having described my invention,- what I claim as new and desire to secure by Letters Patent of the United States is r 1. A'divided lastih-aving .a-heel-part and "forepart, the former of which is removable in collapse leaving the latter in the shoe,

and bonding mechanism normally-holding 1 a tive twisting :movementof said forepart and heel part about a longitudinal axis.

3. A divided last having a heel part and forepart constructed to permit =relative movement for collapsing thevlas't, and means for holding said parts'together, constructed and arranged tolbe disengaged by a rotary shearing movement of said forepart and heel part about a longitudinalaxis.

4. A last having a' heel part'and a torepart and a bonding meansoining them 0011- structed and arranged to permitthe heel part and forepart to be sep'arated' as 2111111- cident oi shoemaking, said means compris-- ing a hook directed'to'ward the side of the last and integrally mounted on one of d last parts.

5. A last having a heel part and a forepart separated on a cut'running completely through the last, and a bonding means joining them constructed and arranged to permit theheel part and forepart' to be separated as anincident of shoemaking, said means comprising a horizontally directed hooln 6. A last-having a heel part and a torep'art and a bonding means oining them-constructed'and arranged to permit the heelpart'and forepar t to be separated as an incident of shoemak'ing, said means comprising a hook integrally mounted on one of said lastparts and facing substantially parallel to the last periphery in the neighborhood of the hook.

7. A last having a heel part and aforepart and a bonding means joining them constructed and arranged to permit the heel part and forepart to be separated as an incident of shoemaking, said meanspcomprising a hook near the periphery of the last and facing substantially parallelto' the last periphery'in theneighborhood of the hook.

8. A lasthaving a heel part and a forepartand a bonding means joining them constructed and arranged to permit the heel part andtorepar't to he-separated as an incident of shoemaking, saidmeans being located at least substantially one half' oi' the them in extended position in a shoe V1688 being constructed to release said last 9. A last having a heel part,a torepart,

"and a pair of hooks located one on each last part at least substantially one half of the distance from the main longitudinal axis of the last to its periphery and operable to permit collapse ofithe last by a, relative twisting :movement or the last parts about a longitudinal axis.

10. Adivided last having a heel part and forepart and a separable bonding mechanism comprising a pair of oppositely directed hooks, one integrally mounted on each last part, said hooks being directed toward the sides of the last, respectively.

11. A divided last having a forepart and heel part and bonding devices for holding said. de-

parts for collapsing movement bya relative twisting movement of the saidparts about a longitudinal axis, and positively acting means for normally preventing said relative twisting movement. r a

12. A divided last having forepartand heel part and bonding devices for holding them in extended position in a shoe, said devices being constructed to release said last parts for collapsing movement by a relative twisting movement of the said parts, and rigid inter-fitting means on "said last parts for normally preventing said relative twisting movement. 1

13. A divided last having a forepart and heel part and bonding devices integrally mounted upon them for holding them in extended position in a shoe, said devices being constructed to release said last parts for eollapsing movement by a relative twisting movement of the said parts about a longitudinal axis, and interh'tting means on said last parts for normally preventing said relative twisting movement, said interfitting means being disengageable by a relative movement of said forepart and heel part about a transverse axis.

14. A divided last having a torepart and heel part andbonding devices for holding them in extended position in a shoe. s: id devices being constructed to release said last parts for collapsing movement by a rotary shearingmovement of the said parts, and interfitting means on said last parts for normally preventing said relative twisting movement, said interiitting means being disengageable by virtue of the ordinary looseness of the parts.

15, A divided lasthaving a torepart and.

heel part and bonding devices-for holding them in extended position in a shoe, said devices beingeonstructed to release said last parts for collapsing movement by a relative twisting movement of the said partsabout a longitudinalaxis, a pivot for guiding said movementyinterfitting means on said last parts for normallypreventing said relative m twisting movement, said inter-fitting means being disengageable by a relative movement of said iforepart and heel part about a transverse axis, and a member for normally imeding said lastdescribed relative move-I7 ment. i

16. A divided last having a iorepa-rt and heel part and bondingdevices for holding them in extended. position in a shoe, said devices being constructed toreleaso saidlast no parts for collapsing movement by a. relative twisting movement ojt the said parts, interfitting means onsaid last parts for normally preventing said relative twisting movement,

said interfitting means being disengageable by a relative movement of said forepart and heel part about a transverse axis,'and a resilient mechanism for normally preventing said last described relative movement.

17. A separable last comprising a foreea part, a heel part and bonding means for holding said partsin extended position in a shoe, constructed and arrangedto' release' said parts for'relative movement, and separable by a relative lateral movement of the localities containing the bonding means.

18. Adivided last comprising. a forepart and a heel 'part,'a bonding-mechanism located wholly in the cone of the last to hold the last in extended position in the shoe,

said mechanism comprising a laterally directed hook on one last partarranged'to engage the other and to disengage it upon a lateral movement of one last part relatively to the other, and one of said last parts 10.3

having a boss and the other having a depression arranged to interengage to prevent said lateral movement.

19. A divided last comprising a forepart and a heel part, a bonding mechanism lo- 11a cated in the-cone otthe last to-hold the last in extended position in the shoe, said mechanism comprising a laterally directed hook on one last part arranged to engage the other, and to disengage itupon a lateral 11a movementoit one last part relatively to the other, the last comprising also a pivot for guiding said lateral movement, and a boss on. one last part and a depression in the other arranged. to interengage to prevent said lateral movemenhsaid boss and depression beinglocated' below the longitudinal axis of the last so that they are held in en gagement by the lastingtension of the shoe.

20. A divided last comprising a :lorepart and a heel part, a. bonding mechanism located in the cone of the last to hold. the last in extended position in the shoe, said mechanism comprising a laterally directed hook .on one last part arranged to engage the other and to disengage it upon a. lateral movement of one last part relatively to the other, and one of said last parts having a boss and the other having a depression arranged to interengage to prevent said lateral movement, said boss and depression being located below the longitudinal axis of the last so that they are held in engagement by the lasting tension of the shoe, there being sufficient looseness of the parts to permit disengagement of said boss and depression against the shoe tension, to permit the saidrelative lateral movement of the last parts.

21. A separable last comprising a forepart, a heel part and a bonding means consisting ofa laterally facing hook on one last part and a co-operating member on the forepart, the hook and member being disengageable by a relative twisting movement of the last parts, whereupon the heel part may be moved relatively upwardly over the forepart to remove it from the shoe without disturbance of the forepart.

22. A separable last having a heel part and a forepart divided by a substantially plane transverse cut and a bonding mechanism for holding them in extended position constructed and arranged to permit separation and connection of said parts upon a relative twisting movement about an axis perpendicular to the plane of the cut.

23. A divided last having a transverse substantially plane out between the heel part and forepart, a longitudinal pivot extending from one of said parts into the other, and

a bonding mechanism for connecting said last parts constructed and arranged to come into engagement or disengagement by a relative rotation of the last parts about the pivot.

24. A divided last having its bonding means located solely in the cone thereof, and means on the heel part and forepart constructed and arranged normally to prevent movement of the bonding means to permit collapse of the last.

25. A divided last having its bonding means located in the cone thereof, and means located between the longitudinal axis of the last and its bottom on the heel part and fore part constructed and arranged normally to prevent operating the bonding means to permit collapse of the last.

26. A divided last having its bonding means located in the cone thereof, and means located below the longitudinal axis of the last on the heel part and forepart constructed and arranged to prevent operation of the bonding means to permit collapse of the last, said lower means being rendered inoperative by a slight movement of separation between the lower portions of the last parts, whereby the bonding mechanism is rendered operable to permit collapse of the last.

27. divided last having its bonding generally transverse-to the last, that partof i the cut at the top of the cone being substantially out of perpendicular to a vertical longitudinal .median plane of the, last in order to bring it into substantial perpendicularity to the instep ridge.

29. A separable last comprising a. heel part and a forep-art with their secant faces in contact, one of saidparts having its secant face free from unyielding projections of any kind, a hook projecting from the upper portion of the sccant face of the other last part, 7

and the first-named last part having an aphook projects, and also having an engaging face in the aperture below the surface of its secant face arranged to engage the hook to hold thelast parts together. 7

30. A separable last having a bonding means operable by a relative rotation of the last parts, a rib on one part and a cooperating slot on the other for locking the bonding means, and a pivot means at one end of the rib and slot structure about which to effect relative displacement of the rib and slot to cause engagement or disengagement of the bonding means, the last parts being constructed for junction or separation by a further relative movement in the same direction.

31. A separable last having a bonding means and a riband slot structure for holding said bonding means in operative position, said bonding means being disengageable by a relative movement of the rib and slot over each other, and the last parts being then separable by a continued movement in the same direction.

32.. A separable last having "a bonding meansand a rib and slot structure for holding said bonding means in operative posi-' tially relatively approachable by a relative movement in the same direction.

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

GARRETT r. 's. onoss,

90 f erture in its secant face into which the said 4

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