US2398040A - Apparatus for cement-attaching soles to shoes - Google Patents

Description

A ril 9, 1946. R. M. ROYAL 2,398,040

APPARATUS FOR CEMENT-ATTACHING SOLES TO SHOES Filed Sept. 23, 1944 [nuen for Ralph M Royal Patented Apr. 9, 1946 APPARATUS FOR CEMENT-ATTACHING SOLES TO SHOES Ralph M. Royal, Boston, Mass, assignor to United Shoe Machinery Corporation, Boston, Mass, a corporation of New Jersey Application September 23, 1944, Serial No. 555,449

6 Claims.

The inVentiOn relates to apparatus for cementattaching soles to shoes.

In the cement-attachment of soles to shoes, particularly shoes which are to have wood heels, it is desirable that the rear portion of the sole which lies over the heel-seat of the shoe shall not adhere to the heel-seat since such adhesion interferes with the subsequent operation of heel-seat fitting. In some factories it is customary to at tach a piece of paper to the heel-seat prior to attachment of the sole to prevent adhesion when the sole is attached, the paper, of course, having to be removed prior to the heel-seat fitting operation. This procedure entails a good deal of work and consequent expense which it is the object of this invention to avoid.

The invention may be applied to any cement sole-attaching machine but, for the purpose of illustration, it is shown as applied to a machine of the type disclosed in United States Letters Patent No. 2,356,756, granted August 29, 1944, upon the application of Sidney J. Finn. To the rear end of the pad box is attached a flap or tongue of thin, flexible and durable material such, for example, as rubber, the flap being long enough to extend to that portion of the rear end of the pad box at which the breast line of the sole and shoe will be located during the sole-attaching opera tion. In use, the flap is thrown back during the location of a sole upon the pad and is then placed over the heel-seat portion of the sole. A shoe is then placed upon the sole with its heel-seat resting upon the flap which, of course, prevents contact between the rear end of the sole and the heelseat of the shoe. Thus, any cement which has been applied accidentally or otherwise to the heelseat or the rear end of the sole will come in contact only with the flap which, if made of rubber or similar material, will not adhere strongly to either the sole or the heel-seat and when the shoe is removed can be readily stripped away from the shoe.

In the drawing,

Fig. l is a perspective view of the pad box of a cement sole-attaching machine equipped with an embodiment of the present invention;

Fig. 2 is a side elevation, partly in section, of the pad box with the shoe held under pressure; and

Fig. 3 is a detail in side elevation showing the shoe released from pressure and being removed from the machine.

In the drawing, the pad box of the sole-attaching machine is indicated at ID, the box containing a yielding pad I2 and having at its rear end a. cover plate l4 secured to the pad box It. Under the plate It and between it and the pad is secured one end of a strip or flap ll: of material which extends over the rear end of the pad box to the line where, on the average, the breast lines of the soles will be located, the forward edge of the flap being made to coincide with the direction of the breast line. While the flap may be made of various materials such as synthetic rubber or synthetic sheet plastic, sheet rubber has been found very satisfactory since the cements usually used in cement sole-attaching do not strongly ad here to it. The flap I6 need be only as wide as the widest sole at the breast line, and its location lengthwise of the pad may be varied to correspond with the length of the soles being attached.

In use, the operator throws back the flap l6 and locates a sole upon the pad box as usual. .The flap, when released, will return to its original position, that is, with its free end over the heel-seat portion of the sole. The operator then places a shoe upon the sole, the flap l 6 lying between the heel-seat of the shoe and the rear end of the sole, and applies pressure, as shown in Fig. 2, to cause cement-attachment of the sole to the shoe. He then releases the shoe, as shown in Fig. 3, and, in removing it, will lift up the shoe and the free end of the flap I6 which he can then release from its location between the sole and shoe by giving it a. slight jerk, the flap being then free to be used again on the next shoe. By this procedure the soles are properly attached to the shoes at the foreparts and shanks, and the heel ends of the soles are kept free from adhesion to the heelseats to facilitate the subsequent operation of heel-seat fitting and, substantially without extra labor on the part of the operator, the trouble and expense of applying pieces of paper to the heelseat and subsequently removing them are entirely avoided.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent of the United States is:

1. In a cement sole-attaching machine, a pad box having attached thereto a flap of flexible material arranged to lie between the sole and the heel-seat of a shoe during the attaching operation, said flap covering that portion of the sole which extends rearwardly of the breast line.

2. In a cement sole-attaching machine, a pad box having attached thereto a flap of flexible material to which cement will not strongly adhere arranged to lie between the sole and the heel-seat of a shoe and to cover the entire area of the sole from substantially the breast line rearwardly during the attaching operation.

3. In a cement sole-attaching machine, a pad box having attached thereto a fiap of sheet rubher arranged to lie between the sole and the heelseat of a shoe during the attaching operation.

4. In a cement sole-attaching machine, a yielding pad, a pad box containing the pad, and a flap of sheet material secured at the rear end of the pad box and having its free end located at that point on the pad where the breast line of the shoe and sole will be located.

5. In a cement sole-attaching machine, a yielding pad, a pad box containing the pad, means for holding the pad therein, and a flap of sheet material secured at the rear end of the pad box between the pad and the holding means and having its free end located at that point on the pad where the breast line of the shoe and sole will be located.

6. In a cement sole-attaching machine, a yielding pad, a pad box containing the pad, means for holding the pad therein, and a flap of resilient sheet material to which cement will not strongly adhere secured at the rear end of the pad box between the pad and the holding means and having its free end Located at that point on the pad where the breast line of the shoe and sole will be located.

RALPH M. ROYAL.

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