US2633587A - Machine for mounting partially completed shoes of the platform type upon lasts - Google Patents

Description

April 7, 1953 FREER MACHINE FOR MOUNTING PARTIALLY COMPLETED SHOES OF THE PLATFORM TYPE UPON LASTS Filed May 1, 1948 2 SHEETS-SHEET l mHH.

as 40 3e 4 Inventor C'cczl H Freer By Aprll 7, 1953 FREER 2,633,587

MACHINE FORMOUNTING PARTIALLY COMPLETED SHOES OF THE PLATFORM TYPE UPON LASTS Flled May 1, 1948 2 SHEETS-SHEET 2 [nve n for Cecil [7. Free;

This invention relates Ling, partially completed shoes of the platform type upon lasts, and it is disclosed as embodied in a machine of the type illustrated and described in United States Letters Patent No. 2,514,512, granted July 11, 1950, upon the appliforce lasting platform shoes.

Patented Apr. 7, 1953 MACHINE FOR MOUNTING PARTIALLY COM- PLETED SHOES OF THE PLATFORM TYPE UPON LASTS Cecil Howard Freer, Leicester, England, assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application May 1, 1948, Serial No. 24,524 In Great Britain July 8, 1947 2 Claims.

to machines for mountcation of John W. Pratt. It is a common practice to begin the manufacture of such a shoe by asse'mbling'and stitching together a shoe upper, a sock lining, and a platform cover and then to mount this assembly, which constitutes a partially completed shoe, upon a last for the purpose of imparting to it a desired shape and also for facilitating the performance of subsequent oper ations. The partially completed shoe is mounted upon the last first by placing it loosely upon the last and then by urging it rearwardly on the last with considerable force. This operation, which is analogous to the relasting of turned shoes or of McKay or Littleway shoes, is commonly known as forcelasting or slip lasting.

It is an object of the present invention to provide a simple and inexpensive machine for In accordance with this object, the machine disclosed herein is provided with means engageable with the last on which the shoe is mounted, means engageable with the platform cover, and means for exerting a force between the two first-mentioned means to effect relative movement between the last and the shoe. As shown herein, the means engageable with the platform cover fits into the heel end of the open pocket formed by the platform cover, and the force is directed heelwardly to urge the shoe further on the last. This means may conveniently consist of a block which is slidable forwardly and rearwardly on the sock lining and which has its rear portion shaped to the outline of the heel end of a shoe to enable it to engage the heel end of the pocket formed by the platform cover.

These and other novel features of the invention are illustrated in the accompanying drawings and hereinafter described and claimed.

Referring to the drawings,

Fig. 1 is a side elevation of an illustrative machine embodying the invention, the movable parts of the machine being shown in the positions which they occupy at the beginning of an operation;

Fig. 2 is a view similar to Fig. 1 showing the positions of the movable parts of the machine at the completion of an operation; and

Fig. 3 is a plan view of a block constituting a portion of the machine shown in Figs. 1 and 2.

The work-engaging instrumentalities ,of the illustrated machine consist of an upstandingstationary last pin 10 and a movable block 12. The last pin l0, which supports in inverted position a last L, is secured upon the top of a short standard 14 fixed upon a work bench IS. A partially completed shoe consisting of an upper U, a sock lining S, and a platform cover Chas been loosely mounted upon the last L by hand. .The platform cover C has already been turned to extend away from the last and to form an open pocket with the sock lining S. p

The block [2, as shown in Fig. 3, has a rear portion l8 shaped to the outline of the heel end of a shoe to enable it to engage, over a substantial area, theinterior of the heel end of the platform cover C. The forward portion of the bottom of this block may conveniently be beveled as indicated by the reference numeral 20.

The operating instrumentalities of the block l2 comprise a treadle 22 fulcrumed upon a stationary pin 24 mounted in a bracket 26 secured to the floor. A rod 28 pivotally connected atits lower end to the treadle 22 and at its upper end to one arm of a bell crank 30 transmits motion from the treadle to the bell crank. The bell crank Si] is fulcrumed upon a stationary pin 32 carried by a bracket 34 secured upon the work bench [6. The other arm of the bell crank 30 extends upwardly and carries a pivot pin 36 upon which is mounted for heightwise swinging movement one end of a short link 38, the pin 36 being approximately on a level with the turned platform cover C. Pivotally connected to the other end of the link 38 by a pin 40 for swinging movement laterally of the shoe is one end of a bar 42. The link 38 and the pins 36 and 40 thus constitute a universal pivot. The other end of the bar 42 is rigidly secured by screws 44 to the upper surface of the block l2. A spring 46 normally holds the treadle 22 in raised position as shown in Fig. 1. Adjustable treadle stops 48 and 50 are provided to prevent excessive movement in either direction.

The operation of the above-described machine upon the partially completed shoe will now be explained. The operator moves the block l2 laterally or heightwise (or both) to an out-of-the- Way position and then loosely mounts the partially completed shoe by hand upon the last L, preferably after placing the last upon the last pin l 0, and he manipulates the shoe to draw it as far rearwardly on the last as he conveniently can by hand. He then replaces the block i2 in its operative position and depresses the treadle 22,

causing the block l2, which rests by its own weight on the sock lining S, to slide rearwardly into engagement with the interior of the rear end of the pocket formed by the platform cover The block 12, being free to swing about the pin 40, will automatically adjust itself laterally of the shoe. Further downward pressure upon the treadle 22 causes the block 12 to exert positively a considerable rearward force, which'issubstantially hori-- zontal or lengthwise of the shoe, upon theiplatform cover and therefore the sock lining. thus urging the shoe further upon the last, from the position shown in Fig. 1 to that shown in Fig. 2. While depressing the treadle the operator may, if desired, use both hands to assist in urging the forepart of the shoe into proper relation to the last and smooth it thereagainst. After the shoe has been drawn rearwardly by the treadle mechanism as far as desired, with the heel end of the -sock lining in register with .the heel end of the "Iast, the operator may turn the heel end of the upstanding platform cover down around the heel endof the last to prevent undesirable contraction {of the sock lining and creeping of the heel end of the shoe forward of the heel end of the last.

The shoe shown in the drawings may be provided with a heel strap H which, if provision is jmade iorbuck-ling'it, may conveniently be left unibuckled. In shoes having continuous heel straps with no provision for buckling, it is often convenient to draw the heel strap over the .heel of the last by hand; but if the heel strap is too tight, it may be raised above the last. Likewise, shoes having continuous heel slingsin place of the strap H and secured only to the sock lining S may,

too tight, beraised in a similar manner.

Having described myinvention, what I claim as new and desire to secure by LettersPatent of the United States is:

;1. In a force lasting machine, a support for an inverted last on which is loosely mounted a partially completed shoe having .a platform cover turned right side out to form an .open pocket, a member shaped to the outline of the heel end of a shoe and having a working surface which extends heightwise of the shoe and which is engageable with the interior surface of the open pocket, and means for exerting between the last support and the pocket-engageable member a horizontal heelwardly directed. force to urge the shoe heelwardly on the last.

.2. A force lasting machine comprising an upstanding last pin for supporting in inverted position a last on which is loosely mounted a partially completedshoe having a platform cover stitched to its sock lining and turned away from the last tonform a pocket at the heel portion, a block slid- .able .torwardly and rearwardly on the sock lining and engageable, when slid rearwardly, with the pocket at the heel end of the shoe, said block having its rear portion shaped to the outline of the heel end of a shoe, an arm secured to said block and extending rearwardly therefrom, means constituting a universal pivot connected to the rear end of said arm and about which the arm and the block are free to swing heightwise and laterally, and treadle operated mechanism connected to said universal pivot whereby the block can he slid rearwardly into engagement Withthe pocket of the platform cover and pressed rearwardly against the pocket to urge the shoe further on the last CECIL HOWARD FREER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,678,165 Pym July 24, 1928 2,420,948 Greenhalgh May 20, 1947 2,427,179 Ayers Sept. 9, 19.47 2,427,356 Knowlton -Sept. 16, 1947 2,514,512 Pratt July 11, 1950 FOREIGN PATENTS Number Country 'Date 582,500 France Oct. 16, 1924

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