US1634487A - Machine for separating lasts and shoes - Google Patents

Description

' 1634 487 1 July 5 1927 M. F. BROGAN MACHINE FOR SEPARATING LASTSv AND SHOES I Filed may 12. 1921 4 sheets-sheet 1 :mw @e j j O` 76 //Z G f ssff' fnl 50 l ,L'O" l@ .ri iE 1 /60 I g z j 1 (D f, i ,(l il Tv-x" Y v Y Y G 06 j O\\ v r,

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' i 1.634,48 my 5 1927' M. F. BROGAN 7 i lIIAGIUNII) FOR SEPARATING LASTS AND SHOES Filed May 12. 1921 1 sheets-shew, 3

July s, 1921. 1.634.481

M. F. BROGA-N MCHINE FOR SEPARATING LASTS AND SHOES Filed May '12. 1921 4 sums-spes; 4

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Patented July 5, 1927.

'estres STATES PATENT OFFICE.

MICHAEL F. BROGAN, 0F LAWRENCE, MASSACHUSETTS, ASSIGNOR -TO UNITED SHOE MACHINERY CORPORATION, OF PATEBSON., NEW JERSEY, .A CORPORATION OF NEW JERSEY.

MACHINE FOR SEPARATING LASTS AND SHOES.

Application filed May 12, 1921,. Serial No. 469,006.

This invention relates to shoe machines, and is illustrated as embodied inv a machine for separating lastsan'd shoes.

In separating high shoes from their lasts, it is desirable to diminish the strain on the shoes by turning back the tops of the shoe uppers to permit longitudinal withdrawal of thc lasts as soon as the last heels clear the counters of the shoes. A last-pulling machine embodying means for performing this operation was first disclosed in Letters Patent of the United States No. 1,361,822, granted to me on an applica-tion tiled May 19, 1915. In this machine two gripping jaws or pincers are provided, which grasp the shoe upper, one on each side, pulling it outwardly 'and turning it back about the shoe counter.

It is an object of this invention to improve the operation of machines of this type, as will hereinafter be fully explained. In its broader aspects, however, the invention is not limited to the particular Vform of last `and shoe separating mechanism disclosed in the above-identified patent.

A feature of my invention is to be found in the provision of mechanism for operating the upper-turning means at the very beginning of the relative separat-ing mov-ement of the last and shoe, so that the upper may be turned back down to the 'counter stiffener at the beginning of said rela-tive separating movement, and for thereafter holding the upper turned back until the completion of said separating movement. As illustra-ted, this mechanism is actuated by the beginning of the separating stroke, while all lost motion is being taken up the separating mechanism, and its cycle i-s completed to turn back the upper before the actual relative movement of the last and shoe heightwiseof the -shoe has much more than begun. In this way the shoe upper is safely distended so as to relieve the shoe from strain such as it would A.otherwise be subjected to throughout the movement lof the last heightwise of the shoe. This positively insu-res against undue stretching of the counter portion of the shoe upper by the with 'drawal therefrom of the bulging rear portion `of the last and thus possible injury to the backseam is Vavoided and the sepan-ation of the last from the rear of the shoe is greatly facilitated.

As this turning back of the upper is completed while the last `heel is still strained against the counter to provide the greatest possible clearance between last and shoe at the instep, the pincer is arranged to engage the shoe at the backseam, and to fulcrum against the middle part of the counter while pulling kthe top of the counter backward. According to this novel arrangement, the length of the shoe upper is increased just at the time of maximum longitudinal strain on the shoe, and this results in ay marked decrease in the longitudinal strain necessary to obviate the possibility of the last breaking the shoe out across the instep. The pincer is supported during this operation by cams which rest on cam vplates carried by the usual shoe-gripping devices.

In order to facilitate the use of a single pincer engaging the shoe-upper at the back seam, my invention contemplates the use of an upper-spreading device, illustrated as a plate carried by the last support, to cam apart the sides of the shoe ripper when the lastedL shoe is posi-tioned en the support.

Further features of my invention are .to be found in various combinations and specitic constructions 'which' will be obvious from the following description of the embodiment of my invention shown by way .of illustration in the accompanying drawings, i-n which.

Fig. 1 is a side elevation of the machine with the casing broken away;

Fig. 2 is a perspective View of the last vsup-portl and the upper-turn`ing means:

Fig. 3 .is la perspective view -of one of the -sh-ce-gripp'ing devices carrying a cam plate; an

Figs. 4 to 7 inclusive are diagrammatic Views showing tthe oper-ation ofthe machine.

The machine is carried by a suitable cas ing 10, Iand is lactuated through a definite cycle by cams on a main shaft l2, controlled by stopping and starting mechanism 14 operated either by depression kof a treadle 16 or by an Aupward pull yon a chain 18 secured to a last support 20. The last support carries a llast pin 22, on which a 'lasted shoe is placed, and is secured toone end of a bell crank lever 24 arranged to be pulled downwardly to withdraw a last from a shoe by a link 26 and lever 28 operated by a thrustrod 30 actuated by a suitable `cam on the shaft 12. The outer .end of the bell crank 24 is supportedby a two-part spring 82, secured to the link 26 at 84.A li'ielever "o yieldingly pulled upward as far aspermitted by the thrust-rod 80, by means-vof an adjustable spi-ino' 85.

l.When a lasted shoe has been placed on the last pin 22, and the lastsupport 20 is raised to position the shoe and to trip the starting mechanism 14, the li f portion of the rotation of the shaft l2 operates, through a suitable canna bell crank lever which advances a push-rod40 against the resistance of springs 42, to actuate co-operating devices 44 to grip the shoe,whereupon the link 26 is moved downwardly to pull the last out of the shoe.

r)The above-described parts" and their method of operation may be, and are illustrated as, identical with the disclosure in my co-pending application No. 182,054, filed Sept. 24, 101i", (ll ited Etats. lyietters lfatent No. 1,888,284, granted CVely 5, i921) and no detailed: description is therefore deemed necessary. Y i

'lo facilitate the turningiof the upper, a plate 50 is secured to the last. support 20 by a screw-and-slot vconnection 52, in position to spread apart the sidesfof the upper of a lasted high shoe when it is placed on the last pin 22. y

The upper-gripping pincer rests vin idle position on an adjustable stop (52 carried by the last support 20, and comprises co-operating jaw members 60 and carried by spindles i0 supported by arnis and *i4 secured to a tl-shaped member ".70, and counterbalanced thereon by torsion springs 80, which support most` of the weight of the upper turning device, in such a manner that rearward yielding-of the arms 72 and 74 will rock the member (6 about its pivotal mounting 78 and distort the torsion springs 80. rThe extent to which member Z0 may rock is determined by an adjustable stop 82. rlhe cams 84 and88 are mounted on the ends of the spindles 70, and are ar anged to be supported by cam plates 88 and 90 carried by the shoe-gripping devices 14 and moved thereby beneath the cams 84 and 8G at the beginning of the rotation of the shaft 12.`

As shown in Figs. 2 and G, thejaw 80 is pivoted to the jaw 64 at 92, and is secured to actuating arms 98 arranged to bepulled by chains 98 to close it against the liaw 04 on the upper of a shoeagainet the resistance of a pincer-opening spring 73, and torock the entire pincer Aabout the spindles 70, turning' back the upper, as .shown .in Figs. 4 to 7. The jaw 64 iscarried bv side af n 94 secured to the spindles 70. During the Lee/4,487

rocking, the spindles are supported by theV cams 84 and 86 bea-ring on the cam plates 8 8 and 90, and are turned against the resistance of torsion springs 71. At the end ofv -mitted by the stop 82, thereby twisting the top of the counter at 102 rearwardly of the shoe. This results in a lengthening of the shoe and a considerable relief in the strain on the-shoe as the last heel is moving past the upper part ofthe shoe counter.

rlhe chains 98 are pulled over pulleys 104 by links 10b' .secured to a lever 108 which is operated by cam rolls 110 bearing thereagainst and carried by the connection 84. 'vlhus the lirst downward movement of the link 26 and the connection 84 in the pulling lof the last acts through a very short lever arm rapidly to operate the lever 108. As the lever arm pulling on the links 106 is relatively long, the actuation of t-he upper turning device is completed before the separation of the last and shoe has fairly begun (see Fig. 'l Thereafter the rolls 110 ride idly down the lever 108, holding the upperturning pincer 60, 64 in the position .shown in Fig. 7.

ln operation, a last L carrying a shoe S is placed on the last pin 22, with the top of the upper between the jaws 60 and 64. rlhe last support 20 is then lifted, pulling the chain 18 and starting the rotation of shaft 12. lhe grippers 44 move inwardly to seize the shoe, positioning the cam plates 88 and S0 below the cams 84 and 86. The link 2G begins to descend, and at the very beginning of its stroke it operates the lever 108 te close jaw 60-64 and turn it about the spindles i0, supported by the cam plates 88490, to turn back the upper and twist the counter rearwardly as shown in Fio. 7. The link 26 continues to descend, pulling the bell crank 24 downwardly to extract the last from the shoe as in my above-identified patents. At the conclusion of the cycle, the springs 80,

.42 and restore the various parts of the mechanism to their original positions.

ldlhile l have described in detail one embodiment of my invention, it is not my intention to limit its scope thereby, or otherwise than by the terms of the appended claims. The term shoe, as used throughout the specification and claims, refers to a finished or partly-finished shoe, as the case lmay be.

shoes, in combination, a support for a last,

a.. support for a shoe on the last, means relatively to move said supports to separate the shoe and the last, and turning means'to engage the shoe upper at the back-seam and double it back on itself. l

2. ln a machine for separating` lasts and shoes, in combination, a support tor a last, a support tor a shoe on the last, means relatively to move said supports to separate the shoe and the last, and a pincer to engage the shoe upper at the back-seam and double it baclr on itselt'.

3. ln a machine tor separating lasts and shoes, in combination, a support for a last, a support for a shoe on the last, means relatively to move said supports to separate the shoe and the last, means to spread the shoeupper, and means to turn it back out ot' the way ot the last.

a. ln a machine 'for separating lasts and shoes, in combination, a support tor a last, a support for a shoe on the last, means relatively to move `said supports to separate the shoe and the last, a member on the last support to spread the .shoe upper, and a pincer movable to turn it back.

5. ln a machine for separating lasts and shoes, in combination, a last support, and a member carried by said support to engage and cam apart the sides of the upper ot a shoe on the last.

6. ln a machine tor separating lasts and slices, in combination, a last support, a member clamped to said support for spreading the upper of a shoe on the last, and means to adjust said member relatively to the support.

7. n a machine for separating lasts and shoes, in combination, a last-pin, a bell crank leverI to move the last pin in separating a last thereon from a shoe, and an upperspreading plate mounted on said lever.

8. ln a machine for separating lasts and shoes, in combination, a last-pin, a bellcrank lever to move the last pin in separating a last thereon Yfrom a shoe, and an upperspreading plate mounted on said lever and adjustable relatively to the last-pin.

9. In a machine for separating lasts and shoes, in combination, a support for a last, a support for a shoe on the last, mean; relatively to move said supports to separate the shoe and the last, and means bodily movable to pull the shoe upper rearward relatively to the shoe bottom during the separation of the last and shoe and to double the upper back on itself.

l0. In a machine for separating lasts and shoes, in combination, a support for a last, a support for a shoe on the last, means relatively to move said supports to separate the shoe and tl e last, means cooperating therewith to pull rearwardly on the shoe to relieve strain on the shoe and effective in amaaimnm degree during the early portion or the separating movement, and a connection through which the separating means actuates the strain-relieving means to double thex upper back on itself.

1l. In a machine for separating lasts and shoes, in combination, a supportfor a last, a support tor a shoe on the last, means relatively to move said supports to separate the shoe and the last, and means to double baclr the top of the shoe upper out ot the way of the last and` to stretch the entire upper lengthwise to relieve the strain on the shoe counter by the last heel during the separating movement.

12. ln a machine for separating lasts and shoes, in combination, a support :tor a last, a support for a shoe on the last, means. relatively to move said supports to separate the shoe and the last, a pincer to grasp the shoe upper at the back seam, and mechanism to move the pincer to stretch the shoe upper lengthwise to relieve the strain on the shoe counter by the last heel during the separating movement.

i3. ln a machine tor separating lasts and slices, in combination, a support for a last, a support for a` shoe on the last, means relatively to move said supports to separate the shoe and the last, and means to double the shoe upper bacl; out of the way of the last rapidly during the iirst part ot the separation ot the last and shoe, and thereafter to hold it bach until the separation is completed. i

la. In a machine for separating lasts and shoes, in combination, a support for a last, a support for a shoe on the last, means relatively to move said supports to separate the shoe and the last, a pincer to grasp the shoe upper, and a member movable to move the pincer to turn back the shoe upper rapidly during the first part of the separating movement and to remain stationary to hold the shoe upper turned bacl; during the remainder ot' the separating movement.

l5. ln a machine for separating lasts and shoes, in combination, a support ior a last, a support for a` shoe on the last, means relatively to move said supports to separate the shoe and the last by movements iirst heightwise and later lengthwise of the shoe, av member to engage the shoe upper, and mechanism to move said member to turn the shoe upper outwardly and baclnvardly toward the last bottom, said mechanism being constructed and arranged to complete said upper turning movement substantially at the beginning of said relative separating movement heightwise ot the shoe.

16. in a machine for separating lasts and slices, in combination, a support for a last, a support for a shoe on the last, means relatively to move said supports to separate the shoe and the last by movements lirst lie-ightwise and later lengthwise of the shoe, and means to double the shoe upper back on itselil and to stretch it lengthwise of the shoe, said means being constructed and arranged to complete said doubling and stretching movements before any substantial amount o1" relative separating movement of the last and the shoe height-wise or the shoe has occurred.

17. ln a machine for separating lasts and shoes, in combination, a support tor a last, a support tor a shoe on the last, means relatively to move said supports to separate the shoe and the last by movements lirst heightwise and later lengthwise ot the shoe, a pincer to engage the shoe vupper at the back seam to turn the shoe upper back on itself, and means 'lor operating said pincer to complete said turning back ot the upper substantially at the beginning et the relative separating movement ot the shoe and the last heightwise olf the shoe to facilitate said relative heightwise movement.

18. In a machine igor separating lasts and shoes, in combination, a support for a last, a support for a shoe on the last, means relatively to move said supports to separate the shoe and the lait, a member to engage the shoe upper, and means to move said member bodily toward the shoebottom and to twist it to double the upper back on itselt.

lt). ln a machine lor separating lasts and shoes, in combination, a support for a. last, a support for a shoe on the last, means relativelyxto move said supports to separate the shoe and the last, a member to turn back the shoe upper, and a cam bodily to move said member.

20. ln machine for separatinf lasts and shoes, in combination, a support for a last, a support l'or a shoe on the last, means relatively to move said supports to separate the shoe and the last, means to grasp the shoeupper, and means carried by the shoe support to co-operatc with the shoe upper grasping means in turning the shoe upper backwardly about the counter.

2l. ln a machine lor separating lasts and shoes, in combination, a support for a last, a support for a shoe on the last, means relatively to move said supports to separate the shoe and the last, a pincer to grasp the shoe upper, means to turn the pincer including a cam, and a cam plate to co-operate therewith to move the pincer toward the bottom of the shoe.

22. ln a machine tor separating lasts and shoes, in combination, a. support for a last, a support 'lfor a shoe on 'the last, means relatively to move said supports to separate the shoe antL the last, pincer to grasp the shoe upper, a cam to move the pincer toward the bottom olf the shoe, and a cam plate carried by the shoe support to coope ite therewith.

23. ln a machine lor separating lasts and shoes, in combination, a support for a last, a support t'or a shoe on the last, means relatively to move said supports to separate the shoe and the last, means including a cam to co-operate therewith in separating the shoe and the last, and a cam plate carried by the shoe support to provide a bearing for the cam. v

24%. In a machine for separating lasts and shoes, in combination, a support for a last and shoe arranged to be lifted manually to position the shoe in the machine, .shoe-engaging members removable to grip the shoe, a spindle moved into position by the last support, a jaw eccentrically mounted on the spindle to turn back the shoe upper, cams on the spindle yto litt the jaw, and cam plates carried by the shoe-engaging members and moved thereby to furnish bearing surfaces for said cams.

25. Pincer mechanism comprising a spindle, a pincer jaw carried thereby and terminating approximately in the line ot' the axis ot the spindle, a co-operating pincer jaw in the form of a bell crank lever pivoted thereto at a point eccentric to the line of said axis, and a member to pull on said bell crank lever, to close the pincer jaws and turn them about the axis, the bell-crank lever having an arm connected to the pull` ing member which is curved about said axis to give an effective lever arm of substantially constant length.

26. Pincer mechanism comprising a spindle, a pincer jaw carried thereby and having its gripping portion approximately in line with the axis of the spindle, means to turn the jaw about the axis ot the spindle, a cam plate, anda cam on the spindle to engage the cam plate to litt the spindle.

27. In a machine for separating lasts and shoes, in combination, a support for a last,

a support for a shoe on the last, means relatively to move said supports to separate the shoe and the last, an upper yturning member arranged to engage the rear extremity ofthe shoe, and means for actuating said member to force the top of the shoe counter backward to facilitate clearance of the last heel. f

28. In a machine for separating lasts and shoes, in combination, a support tor alast, a support for a shoe on the last, means ,relatively to move said supports to separate the shoe and the last, and a pincer to bear against a central portion of the shoe counter and twist the upper portion of the counter backward to facilitate withdrawal of the last heel. Y

29. ln a machine for separating lasts and shoes, in combination, a support for a last, a support for a shoe on the last, means relatively to move said supports to separate the shoe and the last, oscillating arms, a pincer jaw to turn back the shoe upper, a .spring connection between said jaw and said arms, and a stop to limit the oscillation of the arms.

30. For use in a machine for separating lasts and shoes which has a movable shoe gripping member, means to extract a last from a shoe gripped thereby, and a cooperating strain-relieving device con'iprising a cani, a cam-plate to be carried by the shoegripping member and moved thereby into position t0 be engaged by said cam.

31. Operating mechanism for a turning device comprising, in combination, a vertically movable plunger, roller means carried thereby, and a pivoted lever arranged to be connected t0 said device at its outer' end and to be engaged by said roller means adjacent its pivoted end in such a manner that the lever is turned rapidly .during the rst part of the motion of the plunger and is held during Ithe rest of said motion by said means rolling on the surface of the lever as described.

32. n a machine for separating lasts and shoes, in combination, a support :tor a last,

a support for a shoe on the last, means relatively to move said supports to separate the shoe and the last, a pineer to enUage the shoe upper at the bach seam, and means for operating the pineer to turn back the shoe upper and to twist the top of the counter backivardly aivay from the last7 said pincer being arranged te iuleruin against the iniddle part oit' the counter While pulling the top of the counter backyvardly.

n testimony whereof l have signed my name to this specification.

Mioriann i?. BROGAN.

CAR

CERTIFICATE F CBRECTlON.

ramt No. 1,634,487. Granted July s, 1927, to

MICHAEL F. BRGAN.

lt is hereby certified that errot` appears in the printed specification of the above numbered patent requiring oorreotott as follows: Page 4, line 75, claim 24, for the word "removable" road "movablg and that the said Letters Patent should be road with this correction tho-reir@ that the same may conform to the record ol the case ir the Patent (lloe.

Signed and sealed this 8th day of November, A. D. 1927.

M. J. Moore,

Seal. Acting Commissioner of Patents.

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