US1133533A

US1133533A - Work-support.

Info

Publication number: US1133533A
Application number: US69695312A
Authority: US
Inventors: Ira C Buckminster
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB; Massachusetts Institute of Technology
Priority date: 1912-05-13
Filing date: 1912-05-13
Publication date: 1915-03-30
Anticipated expiration: 1932-03-30

Description

I. G. BUCKMINSTER. WORK SUPPORT.

APPLICATION 11.51) MAY 13,1912.

1 133,533, Patented Mar. 30, 1915.

2 fiHEETS-SHEBT l.

' JML 4% V I. G. BUGKMINSTER.

WORK SUPPORT.

APPLICATION FILED MAY 13, 1912.

1,133,533. Patented Ma1130, 1915.

2 SHEETSSHEET 2.

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Man/25555; I W g/ um M KZWM 4 v A 4% To all whom it may concern:

UNITED STATES PATENT UTEFT@E.

# ma 9. nucimmsrnn, or BEvniiLY, MAssAonnsEr'r's Assienoie 'ro UNI'1ED srion' mcnmnmr comm-1w, or PATTERSON, new JERSEY, A conroaa rron or new WORK-SUPPORT.

. Specification of Letters Patent.

lPatenteol Mar. so, was.

Application filed May 13, 1912. Serial No. 693,953.

Be it known that I, IRA C. B-UCKMINSTER,

a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain lm-Q provements in Work-Supports, of which the tion, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to work supports,

' and more particularly to a support for a last such as is used to hold a shoe while various operations are performed upon it during the process of its; manufacture. In a type of heel attaching machine in common I use the last, upon which the shoe is held while a heel is being attached to it, is carried by a swinging jack post which moves, longitudinally of the shoe, from an inoperative position, Where the shoe is jacked, to a definite operative position, where theheel is attached to the shoe. The heel is supported separately with its top lift or tread face in a definite, fixed position. When attaching heels of various heights and pitches it becomes necessary to adjust relatively the heel and shoe, longitudinally of the shoe, in

order to secure proper register between the seat face of the heel and the heel seat of the shoe.

It is the purpose of the'present invention to provide a'work support with means movable relatively to the support for permitting vided with a heel pin to receive a wood last and freely movablerelatively to the jack through a limited distance longitudinally of the last. An adjustable back stop is provided against which the rear end of the shoe is placed to assist in locating it properly when the jack is moved into its operative position. The last plate may be mounted upon the jack post in any suitable manner to permit the required relative movement between the parts without allowing them to become separated, but it has been found convenient to employ a T-shaped tongue and slot connection with a stop pin to limit the extent of the movement. following description, in connection with the accompanying drawings, is a spec1fica--- A further feature of the invention consists in mounting the last ,plate for free movement in a plurality of directions in a single plane, so that the shoe may easily take a positiondetermined by suitable gages 7 or stops, without the necessity of making adjustments of the jack. It is found convenient to provide for universal movement of the last plate in a single plane by using between it and the jack post a connecting member having two tongue and slot connections with the jack post and last plate respectively at right angles to each other.

In the drawings and the detailed description to follow the invention is illustrated and described as embodied in a work support for wooden lasts to be used in a heel attaching machine but it should be understood that this is merely for the purpose of illustration and that the invention may be embodied in other specific forms and used in other machines without departing from its spirit and intent, as defined by the claims.

In the drawings,-Figure 1 is a perspective view of a work support embodying one form of the invention; and Fig. 2 is a central, vertical longitudinal View, partly in section, of the parts shown in Fig. 1.

Referring to the drawings, a jack post 10 is pivoted at 12 to swing in a vertical plane. The lower end of the jack post is split at 14 and a corrugated block 16 is secured permanently within the split portion. A block 18 fitting loosely in the lower end of the jack post has its curved upper edge corrugated to cooperate with the block- 16. A curved slot 20 is provided through which a screw 22 passes. The screw 22 passes throughpne side of the lower portion of the jack post verse undercut groove adapted to receive the dovetail 24 formed upon the last supporting member or last bed piece 26. A transverse recess 28 in the upper face of the last bed piece receives the end of a spring-pressed pin 30 which is provided with a button 32 located for convenient hand operation. The

recess 28 is long enough to allow considerable sidewise movement of the last bed piece 26 while preventing the latter from dropping out of its supporting block accidentally. A T slot 34 is formed in the lower face of the last bed piece 26 and a last plate 36 having an upwardly pro ecting T-shaped portion is supported in the last bed piece for longitudinal sliding movement, the extent of which is limited by a'pin 38 secured in the last bed piece and projecting into an elon gated recess 40 in the upper face of the last plate. A pin 42 secured in the plate 36 re ceives the last 44 carrying the shoe 46 to be operated upon. I

The pivot pin 12 is mounted 1n two wings 48 projecting downwardly from a plate 50 "which supports the jack post and all the mechanism which has been hereinbefore described. The upper end of the jack post 10 is formed with a fiat portion 52 which engages the lower side of the plate 50 when the post is in its innermost position ready for operation, as illustrated in Fig. 2.

It is usually desirable to clamp or hold the shoe firmly while it is being operated upon, and this is well illustrated in the case of the heel attaching machine which has been selected for the purpose of illustrating a specific embodiment of the invention. such a machine a nail block 54 is so located that when the shoe is in position to be operated upon, as shown in the drawings, movement of either the jack or the nail block toward the other will clamp and hold the work firmly. When a pivoted jack is employed it is desirable that the line of application of pressure to the work should be such as not to have a tendency to cause the Work to be thrown out of position. The stop surface 52 is therefore so arranged that when the jack is pushed in as far as possible its center line will be somewhat back of the line AB of relative movement of the parts. \Vith this construction the tendency when pressure is applied to the work, is to force the work more firmly into the machine rather than to cause it to be kicked out forwardly. 4

It is customary to hold a heel 56 upon the nail block 54 by means of a holder having a normally fixed rear gage 58 and a yielding 'justment of the shoe and heel front gage 60. This arrangement holds the rear portion of the heel near its tread face in a predetermined fixed operative pos1tion.

It is necessary that the heel jseat portlon of the sole of the shoe be brought properly into register with the heel seat face of the heel before the heel is attached orbefore any other operation is performed. upon the work.

This location of the shoe in the machine illustrated is effected by; a band clamp comprising a flexible mem or 62 of thin sheet metal supported atits sides by links 64 carried by adjustable brackets 66. The central portion of the flexible member 62 is supported in a block 68 which, in turn, is carried upon the end of a pin 70. The pin 70 is freely slidable in a bushing 72 which screws into a suitable bracket or supporting member 74. The front end of the bushing 72 serves as an adjustable stop to limit rearward movement of the block 68 and therefore serves to determine the rearmost position to which the shoe may be pushed.

Heels vary greatly in size, height and pitch. Since the nail block is immovable longitudinally of the shoe and since the tread face of the heel must be located in a predetermined relation to thenail block, it is apparent that the position of the rear edge of the heel seat surface of the heel will vary considerably with different sizes and styles of heels. It is therefore necessary to provide means for adjusting the rearward limit of movement of the shoe as described in order to make it possible to secure perfect register between the shoe and heel. Since, for reasons previously stated, the jack must always move to the same position, provision must be made for relative movement, longitudinal of the shoe, between the shoe and the jack post. This is further necessitated by the fact that the pin holes in different lasts frequently vary considerably in location so that in using two successive lasts of the same size and style it may be necessary to move the last pin 42 into different positions. The variation in the location of the pin hole in the last not only occurs longitudinally of the last but also transversely. Furthermore, there are many styles of'lasts inwhich the pin hole purposely is not centrally located transversely of the last. Under such circum-" stances, it is necessary that the relative adboth laterally and longitudinally be effected by gages which are arranged for contact with the surface of the work, and that the work support or .jack be constructed for self adjustment to any size or style of last which it may be necessary to handle. From these considerations it will be seen that a limited universal movement of the heel pin in a horizontal plane is requisite in order to secure perfect results when operating the machine, and the construction should be such that this self menses adjusting movement may take place autumatically, since the location of the heel pin may vary with every shoe to be operated upon.

While the invention has been illustrated and described as embodied in a heel attaching machine, it should be understood that it may be adapted to other machines in whlch a shoe is supported in a similar manner for operations to be performed upon it, and that the invention is not limited in its application to the specific machine referred to in the detailed description.

Having described my invention, what i. claim as new and desire to secure by Letters Patent of the United States is 1. In a healing machine, the combination of. a jack post movable from an inoperative position to a fixed operative position, means for locating a shoe for operation thereon, and a last plate carried by said jack post constructed and arranged for free and unobstructed movements in a plurality of directions in a single plane responsive to said locating means as the jack is moved to its fixed operative position to automatically position the shoe.

2. In a healing machine, the combination of a jack ost movable longitudinally of the machine fiom an inoperative position to a fixed o erative position, a last plate carried by sai jack post, a pin on said last plate adapted to receive a last, and a back stop arranged to be engaged by a shoe upon said last when the jack is in operative position, said last plate being constructed and arranged for free longitudinalmovement in dependently of the jack, whereby the shoe may be brought automatically into position responsive to the'demands of the back stop irrespective of variations in the last.

3. In a machine of the class described, the combination of a jack pivoted to swing between a shoe receiving position and a fixed operative position, a last engaging and sup porting member on the ack constructed and arranged for free and unobstructed movement in all directions in a plane transverse to the longitudinal axis of the jack, and a member having longitudinall and laterally adjustable portions for locating a last supported by said freely movable member as the jack is moved to its fixed operative position.

4t. In a heeling machine, the combination of a nail block and a jack relatively movable in a right line toward and from each other, the jack being mounted for pivotal movement between a work receiving position at an angle to said right line upon one side thereof and a fixed operative position at an angle to said line upon the opposite side thereof, independently mounted, adjustable means for locating the work relatively to the nail block, and a last engaging member upon the jack mounted to permit the work to adof directions in a single plane by contact of the shoe with said flexible band as the-jack ismoved to its fixed operative position. v

.6. In a healing machine, the combination of a jack post movable from an inoperative to afined operative position, a last'plate having. a last pin to engage the last pin socket in a last and a pressure bearing portion to engage the top or crown of the'last and take the pressure transmitted thereto, an independently mounted back stop, and connec tionsbetween the last plate and jack post constructed and arranged to permit free.

movement of thh last plate in a plurality of directions in a single plane as the jack post is moved to place the shoe against the back stop.

7. In a heeling machine, the combination 7 of a jack post movable from an inoperative to a fixed operative position, a last plate tiltable in a plane passing through the longitudinal axis of the jack post and having a last pin and a pressure bearing portion to engage the top or crown of a last positioned on said last pin, means independent of the jack post to position a shoe thereon, and connections between the jack post and last plate constructed and arranged to permit free movement of said plate in a plurality of directions in a single plane as the jack is moved to its fixed position to place the shoe in contact with the positioning means.

8. In a heeling machine, the combination of a jack post, a last bed piece having a flush surface bearing upon the end portion of the jack post and freely movable in a plane transversely of the jack post, and a last plate having a flush surface bearing upon the last bed piece and movable in a plane parallel to the plane of movement of the last bed piece and in a direction at an angle to the direc tion of last bed piece movement, said last plate being provided with a last pin and a bearing surface to engage the top or crown of a last,

9. In a healing machine, the combination of a jack post movable from an inoperative to a fixed operative position, means for do eating a shoe for operation thereon, a last bed piece having a flat bearing surface en gagement with the jack post, and a last plate having on one face a fiat bearing surface engagement with the last bed piece, said fiat bearing surface engagements being constructed and arranged to permit the last plate to move in a plurality of directions in a single plane as the shoe is placed in contact with the said locating means.

10. In. a heeling machine, the combina tion of 'a jack post movable from an inoperative to a fixed operative position, means for locating a shoe for operation thereon, a last bed piece having a flat bearing surface engagement with the jack post, and a last plate having on one" face a flat bearing surface engagement with the last bed piece, said flat bearing surface engagements being constructed and arranged to permit the last or crown of a last.

Copies 0! this patent maybe obtained for 11. In a heeling machine, the combination of a jack post movable from an inoperative to an operative position, a means for locating a shoe thereon as the jack is moved to operative position, and a last plate carried by said jack post constructed and arranged to tilt and movable in a plurality of directions in the same plane responsive to the said locating means as the jack is moved to its operative position to automatically position the shoe.

In' testimony whereof I have signed my nameto this specification in the presence of two subscribing Witnesses.

IRA C. BUGKMINSTER.

Witnesses: 1

CHESTER E. Rooms, LAURA M. Goonnmcn.

five cents each, by addressing the "Gommissioner of ratentw Washington, D. G.