US2067257A - Ejecting die in the manufacture of shanks for shoes - Google Patents

Description

Jan. 12, 1937. M. CANTER EJECTING DIE IN THE MANUFACTURE OF SHANKS FOR SHOES 2 Sheets-Sheet 1 14 INVENTOR M ado-M Filed Jan. 16, 1936 ATTO R N EY Jan. 12, 1937. CANTER 2,067,257

EJECTING DIE IN THE MANUFACTURE OF SHANKS FOR SHOES Filed Jan. 16, 1936 2 Sheets-Sheet 2 INVENTOR ATTORNEY Patented Jan. 12, 1937 EJECTING DIE IN THE MANUFACTURE OF SHANKS FOR SHOES 4 Claims.

The invention relates to apparatus for manufacture of shanks for shoes incorporating a fibre or leather shank piece and a metallic arch secured thereto. In the embodiment illustrated, the apparatus receives an arched metallic shank piece having prongs and supports the metallic arch in a recess below the normally active face of the die, a flat fibre shank being received in the position above the metallic arch member and upon descent and elevation of the die head the prongs of the metallic arch are caused to penetrate the fibre shank and to be headed at the opposite face thereof. Also the margins of the fibre shank are bevelled, the die then automatically ejecting the finished shank.

The device will be described with reference to the accompanying drawings, in which Fig. 1 is a view in side elevation of an embodiment of the invention showing a die head in elevated position.

Fig. 2 is a view similar to- Fig. 1, partly broken away, with the die head in lowermost position.

Fig. 3 is a plan View, partly broken away, of the base member of the device.

Fig. 4 is a bottom plan view of the die head.

Fig. 5 is a vertical section on the line 55, Fig. 2, looking in the direction of the arrows.

Fig. 6 is a perspective view of the completed shank, looking toward the base thereof.

Fig. 7 is a View in front elevation of the die head and members of the die base, showing the position thereof when in use and the action of the device in ejecting the finished shanks.

Fig. 8 is an enlarged fragmentary section, showing the manner in which the prongs of the metal arch piece are embedded in the fibre member of the shank.

Referring to the drawings, it will be noted that the device comprises an upper die head I carried by a block Ix supported by main die block 2 which, in practice, is power driven for reciprocation toward and from the lower positioned die members. Below reciprocatory die head 2 is an angular base member 3 which supports 45 lower die block 4.

Rising from lower block 4 is a fixed die head 5 shaped to conform with the curvatures of metallic arch member 6, Figs. 5 and 6.

Formed with a central aperture to receive fixed die head 5 is a reciprocable die head I, the latter being normally held in uppermost position by a plurality of springs 8 seated within block 4. Each spring surrounds a guide stud 9, Fig. 5, threaded into reciprocatory die head I and passing through guide apertures formed in block 4, the lower end of each stud being formed with a head which serves as a stop to limit the rise of the said reciprocatory die head "I under the impulse of springs 8.

When the uppermost die block Ice is elevated as in the position of Fig. 1, springs 8 act to raise the lower die head I a distance above the fixed die member 5 so that a pocket is formed for ready reception of the metallic arch member 6, as indicated by dotted line a, Fig. 1, showing the upper face of die head 5 relatively to the upper wall of reciprocatory die member I.

It will be understood that the upper surface of reciprocatory die head I is shaped to conform with the fibre shank member (Fig. 6), the margins of the seat being bevelled so as to form a corresponding bevelled facing on the fibre shank. Adjacent the bevelled or exterior area of the said seat are a plurality of registry and guide pins In. These pins pass through apertures formed in the reciprocatory die head i and then extend into vertical apertures formed in base block 4, each pin having a ring-like fiange I I engaged by a spring I2 whereby the pins are normally held in position projected above the upper surface of reciprocatory die head 1.

Within the area of the seat receiving the fibre shank 6:1: is an ejection pin I3 which passes a suitable guide aperture formed in reciprocatory die head I and then extends within an aperture formed in the base block 4. Ejection pin I3 is formed with a ring-like flange I l engaged by a spring I5.

In the operation of the device, the metal arch piece 6 is placed in the seat at 5, Fig. 3, with its prongs uppermost, the seat being sufiiciently deep to hold the metal arch slightly beneath the receiving face of the above described seat for the fibre shank. The fibre shank is then placed on its seat, being guided and placed in proper registry by the pins ID. The upper reciprocatory die block is brought downward and upper die head I in its descent first depresses pins I and I3 and then comes into contact with a fibre shank piece on its seat, the latter being a part of reciprocatory die head I. Die head I is then depressed against the tension of springs 8 which will bring die head into compressive engagement with the metallic arch member 6, causing its prongs to be projected into the fibre shank and headed over at the upper surface thereof. At the same time, the margins of the fibre shank piece are bevelled on one face; the upper die head is then quickly retracted. By such retraction, ejection pin I3 rises with a quick action,

striking the completed shank and throwing it upwardly and outwardly in the manner illustrated diagrammatically in Fig. '7, as, for example, into a collection basket A, the parts thus being restored to initial position for a succeeding operation.

To free the completed shank member from the upper die head, I may form therein a suitable aperture to receive an ejection pin IE to be engaged by a spring [1. The die head may also carry a numbering die at l8.

Having described my invention, what I claim 1 and desire to secure by Letters Patent, is as follows:

1. In an ejecting die for the manufacture of shanks for shoes, a lower die block and a lower fixed die head carried thereby and shaped to conform with the curvature of a lower metal arch member, a reciprocable die head also carried by the lower die block and having an aperture receiving the fixed die head and having a seat to receive a fibre shank surmounting the fixed die head, spring means normally holding the reciprocatory die head with its seat above the fixed die head whereby the latter is normally countersunk to provide a pocket for reception of a metallic arch piece having prongs projected upwardly, a yielding ejection pin held by the said lower die block and passing through an aperture in the reciprocatory die head within the area of its seat, and an upper reciprocatory die block provided with a die head shaped to cooperate with the lower reciprocatory die head and lower fixed die head.

2. A device constructed in accordance with claim 1, in combination with a plurality of yielding registry pins carried by the lower die block and projected through apertures formed in the lower reciprocatory die head at the margins of the seat therein and adapted to be engaged and depressed by the upper die head.

3. A device constructed in accordance with claim 1, in combination with an angular support for the lower fixed die head and reciprocatory die head, an angular support for the upper reciprocatory die block and die head, whereby a downward movement of the upper die head causes downward movement of the ejection pin by the overlying pressure of a shank between the die heads and retraction of the upper block and die head releases the ejection pin, in combination with a spring acting upon the lower end of the ejection pin and serving to impart a longitudinal movement thereto against the lower face of the shank propelling it upwardly and thence laterally to a point exterior the device.

4. An ejecting die for the manufacture of shanks for shoes, constructed in accordance with claim 1, in which the seat of the upper die head is formed with a marginal bevelled face adapted to compress the margins of the shank pieceand finish the same with a bevelled face simultaneously with the action of the die heads in forcing. the prongs of the metallic arch through the fibre shank.

MORRIS CANTER.

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