Патент USA US2405942код для вставки
Aug. 20, 1946, ‘G. CLAUSING 2,405,942 SLIP LAST Filed‘ Sept. ‘1, v1944 ~ . INVENTOR GERGE cmus/xvci WVM ' _ ATTORNEYS 2,405,942 Patentecl Aug. 20, 1946 are STATES PATENT orrics 2,405,942 SLIP LAST» George Glausing, Portsmouth, Ohio, assignor to Vulcan Corporation, Portsmouth, Ohio, a cor~ ~ poration of Ohio. Application September 1, 1944,‘ Serial No. 552,238 3 Claims. (Cl. 12_—136) 1 particularly to the type known as “slip” lasts which are inserted into'the shoe after it has been sewed up and the upper has been sewed to, the insole of the shoe. 2 gether in alignment and for limiting the rel ative movement of the heel and toe parts, the link being at an obtuse angle to said surface when the heel part is in its normal extended po This invention relates to shoe lasts and more sition. ' ' According to the present invention, the slid Expansible and contractible lasts have bee provided for use in the manufacture of shoes where the upper is substantially completed be fore. the last is inserted. However, many. of the lasts of this type, as exempli?ed by the applicant’s 10 lng surface or surfaces between the heel and, toe parts of the last may be curved or straight, and other changes made ‘within the scope of the in vention. Other objects, features and advantages of the invention will also appear from the fol lowing more detailed description thereof, taken tended position, are not solid and depend on the in connection with the accompanying drawing, use of "slides and other mechanism for their op in which; eration. The last of the present invention also Fig. l is a side elevational view of a last con differs from the usual hinged lasts which are 15 Patents Nos. 2,047,309 and 2,065,655, when in ex structed in accordance with the present inven~' tion, with parts broken away to show the link in “flexed” sothat they are more readily removable from the ?nished shoe. ‘ ' elevation and the locking means in section._ The full line drawing shows the last in extended Do sition while the dotted heel portion shows the The primary object of the present invention is to provide a “slip” last which is substantially solid and full throughout, in its extended posi last in shortened or contracted position. Fig. 2 is a View similar to that of Fig. 1, show ing a modi?ed form of last. Another object of the invention is to provide Figs. 3, 4 and 5 are broken side elevational a “slip” last which may be very. substantially shortened for insertion and removal from a shoe. 25 views of further modi?ed forms of the improved slip last of the present invention in which'the full A further object of the invention is to provide line drawing shows the last in its extended po a “slip” last which can be removed from the fin sition while the dotted lines show the contract ished shoe‘without‘marring its shape. ‘ ed arrangement. ‘ An’imp‘ortant feature of the present invention Fig; 6 is a broken view showing a modi?cation is the provision of a shoe last divided into heel of the last of Fig. 5. and" toe portions by a saw-cut which is at a sub The preferred form of the invention is illus stantial acute angle to the normal axis of the trated in Fig. 1 of the drawing which shows a last, or at a substantial acute angle to the tread shoe last comprising a toe part H3 and a heel part of the last.‘ The surfaces formed by the saw-cut l2 connected together by a relatively heavy ?at provide sliding surfaces for the relative move metal link l4 anchored to the toe and heel parts ments of. the toe and heel sections so that the by pins 16 and I8. The, toe and heel parts It last may be shortened by sliding the heel and and-l2 are separated'by a stepped transverse out toe parts toward each other along the saw-cut line l9 which extends upwardly and forwardly under control of a guiding and limiting link Another important feature of the invention is 40 from the forward portion of the heel seat through the upper portion of the instep of the lastt This to provide a slip last which can be materially tion, and'which is of. simple construction and easy to'oper‘ate. cut may be at any suitable angle with respect to . - shortened for insertion’ into the sewed upper of a shoe, and which is provided with a simple means i thetread or axis of thelast. The cut provides for locking. it in extended lasting position so‘that oppositely disposed ?at engaging surfaces which simple design and readily operated for releasing position, as shown inthe full line view. In con tracted position the toe and heel parts are moved relative to each other with the out line surfaces which the ?nal. lasting operations ‘can be carried out. 45 match each other exactly and shoulders engage each other when the last is inextended The locking means of the pre'sentinvention is of the last parts; - ‘ According to the preferred form of the inven tion, the improved slip last: comprises a‘ toe part and a heel part slidably movable relative to each other‘on a forwardly and upwardly extending sur 50 face which is at an angle to the tread‘ or bottom of the last. The last includes~ a connecting link for the toe and heel parts-for holdingjthemnto 5,5. substantially in alignment to the dotted line po sition which very substantially shortens the last and permits its insertion into a sewed upper of a shoe. This shortening also permits its ready re moval from a lasted shoe without marring its share 2,405,942 3 4 The link M is a heavy ?at piece of metal which is mounted in respective vertical slots of the toe and heel portions of the last, theslots being cut to the thickness of the link so that the toe and heel parts of the last are kept in proper align Cl ment. The pins l6 and 18 are located so that a line through them extends at7 approximately the obtuse angle shown with respect to the angle of the cut [9 between the toe and heel portions of the last. This angle which is a substantial obtuse‘ angle permits the movement of the link to the dotted line position and a substantial reduction line which terminates at or near the top of the instep of the last. In this form of the invention a substantially greater amount of the instep of the last is retained on the toe portion than in Fig. 1. In operation, the last of Fig. 2 is similar to that of Fig. l, but when the heel portion is released and moved forward, it follows the curve of the out line to the dotted line position as in dicated. In making a shoe, the toe portion H] is 10' inserted in the sewed upper with the heel portion ,_ l2 in the dotted line position, and then the heel portion is slid down the slope of the cut 82 into in the length of the last. The link limits the ex tension of the last so that the cutsurfaces exactly match each other and a solid full last is provided 15 for the lasting and forming of the shoe. The heel part I2 of the last is IOckedwVit'h're-J ' spect to the toe part when the last is inv its ex—' tended position by means of a locking mechanism which operates between the surfaces o'fthe cut 20 l9 above the link M. The locking means com prises a cylindrical member 20 mounted in the toe part which carries a plunger 22. The cylin drical member 20 is tightly ?tted'in a hole while the plunger 22 is forced outward from the cut surfaces of the toe part by means of a spring, as shown. The plunger 22 extends substantially into a cylindrical member 24 inthe heel part to lock the parts of the last in their normal extended 25 position. The plunger 22 is disposed so as to be released from the heel part by means of a plunger 253 mounted in the heel part and extendinginto the cylindrical member 24. The plunger 26 is keyed to the heel part of the last by means of a pin set through a recess 28 in the side of the the heel of. the shoe, the heel portion l2 there fore follows the arc of the out line 32 into the bottom of the shoe,'and forces the shoe into the desired shape. _ _ > The modi?ed form of the slip last shown in Fig. '3 comprises a toe portion 34 which includes all of the instep portion of the last and a heel portion 36 attached by a link 14 and anchor pins i6 and H8. The toe and heel parts of the last in this instance does not include the entire volume of the original last, but a certain portion is‘ cutv away to provide for the relative movement of the. heel and toe sections. The toe section has atransverse surface 38 extending downward from the; top of the instep, a. curved surface All, a shoulder. 42, and a lower curved surface 44, all transverse. to the last. The heel part of the last includes an. upper transverse surface 46,3, curved surface en... gaging the surface 40, and acu'rved'surface'en gaging the surface 44. The heel section also has. a shoulder surface 48 engaging the shoulder sur-~ face 42 of the toe section when the last is in ex tended position. The cut out portion in the upper portion of the last leaves a transverse space plunger 26. The heel portion of the last is re leased by depressing the plunger 26 and forcing between the surfaces 38, 49 and 46. _When the: the plunger 22 into the toe part in so that the cut surface of the heel part is slidable along the “cut surface of the toe part to the dotted line posi by the dotted line position of the heel part, while tion. _ The pin in'the recess 28 and they shoulder the curved surfaces of the heel part slide along last is shifted to contracted position, the. surface 46 is moved up toward the surface 38 as indicated construction of the plunger 26 prevents'its'entry the surfaces 40 and 44. into the cylindrical member 29. ‘ When the heel part 12 is moved into extended position the spring-operated plunger 22 snaps the plunger '26 1 to its outward positio . » In making a last such as described in connec tion with Fig. 1 of the drawing, the solid. last may be turned to the desired shape, froma block toe part. The round head of the catch 5.01pm jects into a ferrule 52 mounted in the surface of the heel part, so that the heel and toe parts of the last are held in extended position unless su?icient force is applied to overcome the spring in the snap catch 50. Instead of having the surfaces 40, 44, of maple or any other suitablematerial andtoe and heel ?nished. The holes for‘ the pins I 6 and 18 are then drilled and the last sawed in. two along the line I9 as indicated, to provide separate toe and heel positions. The slots for the link are then cut in the toe and heel portions, preferably to one side of the center, so that they do not interfere with the hole for the locking mechanism. The last is then assembled by anchoring the link in the slots by means of the‘ anchor pins it} and |8.' It is then drilled centrally from the upper portion of the‘ last to make thehole for'receiving the locking mechanism and that for the metal liner 38, which is provided for receiving 'a jack , ~ When the last of Fig. 3 is in extended position, the shoulder 48 is in engagement with the shoul der 42 and. the toe and heel parts of the last are held in this position by means of a round-headed snap catch 50, mounted in the surface 44'of the and the corresponding surfaces on the heel part, curved as shown, they may be straight, as in Fig. l, and the intervening shoulder. also be present, or the surfaces may be curved in the reverse di rection, as in Fig. 2, and-the shoulder included. 60 A further modification ‘of the slip last as shown in Fig. 4 includes three parts, a toe part 54, a cen tral part 56, and a heel part 58. vIn the normal position of the last, these parts ‘fit together to form a complete last without any cut ‘out, por tions, as clearly indicated by‘ the full line 1new. 65 The central section has the general shapetof a keystone, and when it is moved up to the dotted line position, the heel part moves in towardthe toe part to very substantially reduce 'the'length . , of the last,‘ as shown by its dotted line‘position. The keystone section 56 isanchored to the toe part by means of a link Bll'and anchor pins 62 pin. The liner Silis then pressed into place and p the various parts “of the locking‘ mechanism‘are mounted inthe toe and heel portions. _ ' ~ The modi?ed form of the slip last shownin Fig. 2 includes the same link and lock constructionl‘as that of the last'shown in Fig.1, andidiffe‘r‘s" only in the shape of the'cut separating the toe andheel portions I79 and I2. In Fig. 2, the ‘cut 32' is‘. a transverse out having astep or shoulderedstop 33 as in Fig. l, which begins at about the same tion with respect to the heel seat as in Fig__l,.,but it extends upwardly and forwardly in a curved and $4. ‘It is also anchored to the heel part'by a linky-n??sa'ndzanchor pins 68 and T9; ' Whenthe last_‘off->Fig..:4;is in extended position, thekeyi a stone section 56 completely intervenes“ between 2,405,942 5 f6 the toe and heelfparts 54 and 58 and'is provided tion 10f: the .heel 1 part- T‘ill, downwardly ’ and for with front and/rear shoulders'which engage cor 'respondingly stop shoulders of the‘toe and heel saw-rout lineBll is brokento provide a step hav parts of the'last so‘that the parts are exactly po sitioned vertically. In this position the pins .65 ing engaging shoulders for the parts ‘[2 and ~74 which determine ‘theposition of the parts of. the last in its extended position, and which ‘provide and 68 are below theline between the pins 62 and '18, so that when the last is in a shoe, the key stone section will be ?rmly held between the toe and heel parts of the last. This will be appar ent from the fact that in order to have the pins 84 and 68 move above the line of the pins ‘52 and lo, there would have to be some additional sep aration between the toe and heel parts 54 and 58. The tension of the shoe upper holds the last parts in normal position. The links 63 and 66 are preferably relatively heav'y ?at pieces of metal similar to links l4, and wardlytoand through the instep of the last. The means .by which the toe and heel parts are caused to match each other exactly. The locking means may :be the same as in. Fig. 5. ' Instead of having a single curved saw-cut line 80, as in Fig. 6, the improved last may include two curved shouldered cuts, extending in substan tially opposite direction-s, somewhat like the saw cuts in Fig. 4, so that an intermediate part of the last is provided. Such an intermediate sec tion may be pivoted by links to the toe and heel sections as in Fig. 4, and functions in the same manner as the keystone-shaped part 56. are set in vertical slots which maintain the align It is to be understood that in all the forms of ment of the respective parts of the last. When it is desired to insert or remove the last from a J the slip last, as shown and described, the saw cut lines may be unbroken and other stop means shoe upper, the keystone section 56 is simply ' used for insuring the proper matching of the re pulled up (by any suitable means) to the dotted spective parts of the last in its full or extended line position shown in Fig. 4, thereby shortening position. In certain instances, such as for ex the last. The last of Fig. 4 is similar in function ample in Figs. 1 and 2, the locking means in con to the last of Fig. 1, because it is provided with nection with the link l4 would be suf?cient to a transverse out line between parts 54 and 56 insure the matching of the toe and heel parts which extends at an acute angle to the longitu of the last if the saw-cut l9 were a straight out dinal axis of the last. The use of the keystone or the curved saw-cut 32 were a continuous section 56 which moves upwardly, however, per mits a substantially horizontal movement of the 30 curve. A slip last made in accordance with the fea heel part 58, so that it may be pushed directly tures of the present invention in any of the var back into the heel of the sewed shoe upper which ious modi?cations'may be used for the manu is to be stretched to shape. The line or cut be facture of shoes in the conventional way, but the tween parts 56 and 58 is also at an acute angle to the axis of the last and therefore contributes 35 slip last is particularly useful and preferably used where the upper is previously sewed to the inner to the shortening of the last. Means other than sole, or sock-lining, and then pulled over the the steps or engaging shoulders may be used for last and the last extended. The outer sole as correctly positioning the parts of the last. well as the heel may be attached to the shoe Fig. 5 shows a slip last which is a modi?cation of the last shown in Fig. 1 and comprises a toe 40 upper while it is still on the last, after which the last may be readily shortened by putting it part ‘l2 and a heel part 74 separated by a trans on a jack post, unlatching or unlocking the two verse broken saw-cut line ‘it. The upper and sections, collapsing the last to substantially lower straight portions of the saw-cut line l'ii shorten it, and then pull the last out of the shoe. run in the same direction and are connected by It will be apparent from the foregoing de a'step comprising a shoulder on the heel part 14 scription that ‘the slip last of the present inven and a shoulder on the toe part 12 which engage tion may be used in various way, and may be each other and determine the proper position of modi?ed in certain respects. Other modi?ed the toe and heel parts of the last when the last forms may be made. These changes are con is in extended position. It will be noted that templated as coming within the spirit and scope the saw-cut line 16 runs at an acute angle to the of the present invention, as de?ned by the claims. axis of the last but in the opposite direction to Having described the invention in its preferred that of the line I!) in ‘Fig. l. A locking means form, what is claimed as new is: comprising a ?at plate or bar 18 is pivoted to 1. A collapsible slip last adapted to be inserted the top of the heel part 74 and when in looking into a sewed shoe upper and used in the forming position one end overlies a portion of the toe and lasting of the shoe, comprising in combina part adjacent the line ‘Hi. When the ?at bar or tion a toe part and. a heel part separated from plate It is turned crosswise of the last, the toe each other by an intermediate keystone-shaped and heel parts may be moved relative to each part having matching engaging surfaces respec other, that is, the heel part may be pushed down with respect to the toe part, or the toe part may 60 tively with the toe and heel parts of the last, said, surfaces being substantially transverse to the be pulled up with respect to the heel part, and last and at an acute angle to the longitudinal thereby shorten the last for insertion into or re moval from the upper of a shoe. axis of the last, a link connecting the toe part to . said intermediate keystone-shaped part, a link In Fig. 5, the saw-cut line ‘56 extends through connecting the heel part with said keystone the portion of the heel normally mounting the 65 shaped part, the ends of the links connected to thimble for the jack pin, and therefore this ele the keystone-shaped part being below a line ment of the last is shown as set in the toe part 12. through the opposite ends of the links when the Fig. 6 shows a modi?cation of the last of Fig. 5 surfaces of the parts are in their normal engag in which the saw-cut is curved. In this ?gure, ing position. 70 the saw-cut is opposite to that in Fig. 2, and it will 2. A collapsible slip last a de?ned by claim 1 in be noted that the toe and heel parts 12 and T4 which said matching engaging surfaces include a are pivoted together by the same means, as in shouldered step for exactly positioning the toe Figs. 1, 2 and 5, and that a broken curved trans and heel parts with respect to the keystone verse saw-cut line 80 extends from the upper por 75 shaped part, 2,405,942 7 3. A shoe last, oomprisingin combination ‘a toe part'and a heel part separated from each other by an intermediate upright keystone shaped part having shouldered surfaces respec tively matching and engaging corr'espondingsur faces on the toe and heel parts of thelast, said surfaces being generally transverse to the last and at an acute angle to the longitudinal axis of the last, a link connecting the toe part to . 8 said intermediate Keystone-shaped part, a link connecting the heel part to said keystone-shaped part; the ends of the links connected to the key stone-shaped part being below a line through the opposite ends of the links when the surfaces of the parts are in their normal engaging position, whereby the ,parts of the last are looked in ex tended position ‘by end compression of the last. GEORGE CLAUSING.