US2068694A

US2068694A - Heel fastening means

Info

Publication number: US2068694A
Application number: US701176A
Authority: US
Inventors: Parker Malcolm William
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1933-01-20
Filing date: 1933-12-06
Publication date: 1937-01-26
Anticipated expiration: 1954-01-26
Also published as: GB432037A

Description

Jan. 26, 1937. I w PARKER 2,068,694

HEEL FASTENING MEANS Filed Dec. 6, 1933 Wks w Patented Jan. 26, 1937 6 UNITED STATES PATENT OFFIQE HEEL FASTENING lVIEAN S New Jersey Application December 6, 1933, Serial No. 701,176 In Australia January 20, 1933 2 Claims.

This invention relates to means for securing heels to shoes during manufacture, especially in the manufacture of womens shoes of the type in which the heel is finally attached to the shoe by 5 nails or other fasteners driven from the inside of the shoe through the heel-seat into the heel.

In the manufacture of shoes of this type it is customary to fit the heel and the heel-seat of the shoe to each other, apply a suitable adhesive, po-

sition the heel upon the shoe, clamp the heel and shoe together while the shoe is still on the last, and hold them clamped for several hours while the adhesive dries. This is a temporary heel attaching operation which is preliminary to the final attachment of the heel to the shoe referred to above.

The method of preliminary heel attachment which is described and claimed in United States Letters Patent No. 1,615,258, granted January 25,

19-27, upon application of Maurice V. Bresnahan,

has proved very successful and has gone into extensive commercial use. The practice of that method involves the use of a screw fastener, which is shown in the patent as having a head in the form of a loop or eye. It is an object of the present invention to provide an improved form of screw fastener for temporary heel attaching which is adapted for use in the practice of the Bresnahan method and which under certain circumstances will afiord substantial advantages over the form of fastener illustrated in the said patent.

In mechanical shoemaking it is sometimes desired to jack a lasted shoe for one or more operations to be performed upon it subsequently to the preliminary heel attaching operation and while the temporary heel attaching screw is still in the work. The present invention provides a heel attaching screw or like fastener which not only facilitates the jacking of the shoe but also makes it unnecessary to drill a separate hole through the last, in addition to the normal jack pin hole with which every last is provided, thus avoiding weakening of the last in its cone portion in which there is, at best, none too much material for adequate strength and durability.

With the foregoing in view, the illustrated embodiment of the invention comprises a heel attaching screw which may be inserted through the pin hole in the last to clamp a heel upon a lasted shoe and which has at its head end an extension, formed preferably approximately like a jack pin, to cooperate with a jack upon which the assembly thus formed may be mounted and solidly held to permit the shoe to be operated upon while the i5 heel is held clamped to it.

As illustrated in the accompanying drawing, the head end of the screw fastener comprises an extension pin which will fit in the hole in the top of a jack from which the jack pin has been removed. By reason of the fact that the screw is engaged with the heel through the normal pin hole of the last the heel is held firmly in position during subsequent manipulation of the shoe while on the last without interference with factory methods of holding the last on a jack, and furthermore the screw may thus be applied in the most effective position to draw the heel squarely, and hold it firmly, to the heel-seat of the shoe.

A fuller understanding of the invention and its advantages may be derived from the following detailed description of one embodiment thereof, taken in connection with the accompanying drawing in which,

Fig. l is a side elevation, partly in longitudinal section, of a shoe assembly including the novel fastener; and

Fig. 2 is a perspective view of the fastener and a washer which may be used in connection therewith.

In the drawing, Ill represents a last which has opening through the top of its cone a jack pin hole containing a thimble l2 and which may, in other respects, be of any suitable type but which has a hole [4, coaxial with and of less diameter than the thimble l2, extending from the bottom of said thimble through the heel seat portion of the last and providing for the passage of a fastener.

A screw fastener, embodying the present invention, is illustrated in the drawing. This fastener has a tapered, threaded, tip portion or point [6 adapted to be screwed into a previously drilled hole in the attaching face of a wooden or other heel i8 positioned upon the heel-seat of a shoe 26 which has been made upon the last it]. The shank portion 22 of the fastener is sufiiciently long to reach the top of the cone of the last when the fastener has been screwed firmly into the heel. Above the shank portion of the fastener is an integral polygonal head portion or member 24 adapted to engage the top of the last and shaped for engagement with a wrench or other fastener turning device.

Beyond the polygonal portion 24 is an integral extension pin 26 having a smooth cylindrical exterior of proper length and diameter to enter and fit in the hole 28 in the top 36 of a jack post upon which it may be desired to jack the shoe. This extension pin may be approximately one and onehalf inches long and should be sturdy enough to support and maintain the shoe and last firmly in position upon the jack. One or more rubber or leather washers 32 may be interposed between the head portion 2d of the screw and the top of the last to provide for a firm but yielding clamping action against the last and also to guard against injury to the last or shoe resulting from the turning and tightening of the fastener when it is screwed into the heel.

After the screw fastener has been inserted and turned home into the heel, the assembly will be clamped with such security that there will be no danger of the heel being moved relatively to the heel-seat of the shoe by any treatment to which the partially completed shoe might ordinarily be subjected. This is particularly true since the axis of the screw is approximately at right angles to the contacting surfaces of the heel and shoe and the screw does not tend to slide the heel upon the shoe when it is tightened.

Weakening of the last by the drilling of extra holes through it is avoided by the provision of a screw fastener which may be inserted through the last thimble and then used in jacking the shoe, making it unnecessary to keep the thimble and the space around it clear for cooperative engagement with the top of the jack.

Having described the invention whatis claimed as new and what it is desired to secure by Letters Patent of the United States is: 7

1. A fastening device for use in shoemaking, comprising a shank adapted to extend from the top of the cone of a last through the heel seat thereof, the shank having a tapered threaded point arranged to penetrate a heel outside the last, a portion at the end of the shank opposite the threaded point for cooperation with the top of the last cone, and a jack pin projecting from said portion.

2. A fastening device for use in shoemaking, comprising a shank adapted to extend from the top of the cone of a last through the heel seat thereof, the shank having a tapered threaded point arranged to penetrate a heel outside the last, a portion at the end of the shank opposite the threaded point for cooperation with the top of the last cone, said cooperating portion being formed to receive a fastener turning device, and a smooth cylindrical jack pin projecting from said portion.

MALCOLM WILLIAM PARKER.