US2385466A - Machine for shaping uppers over lasts - Google Patents

Description

Filed June 16, 1943 Patented Sept. 25, 1945 MACHINE FOR SHAPING UrPERs OVER YLASTS Leonard'E. Proulx, Arlington, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J., a, corporation of New Jersey Application 3 une16, 1943, Serial No. 490,966

5 Claims.

This invention relates to machines for use in the manufacture of shoes for shaping uppers over lasts, and more particularly to machines that operate successively in difierent locations along the edge of the shoe bottom, as the shoe is presented and held by the operator in different positions, to pull the upper and lay its marginal portion over a sole or insole on the last and fasten it. The embodiment herein illustrated is shown applied to a machine of the type disclosed. in United States Letters Patent No. 1,796,451, granted on March 17, 1931, upon an application of George Goddu, which is provided with means for fastening the upper to'a'lip or rib of an insole The invention is not, however; limited to main machines of that particular type nor to machines that fasten the upper to an insole lip. 1

Machines that operate to last shoes progressively as above described, and particularly those of the type disclosed in the Goddu patent, are each provided with a shoe restagainst which the operator holds the bottom of the shoe and which supports the shoe against the heightwise pull on the upper. The engagement of this shoe restwith the sole or insole also'assists the operator in holding the shoe against lateral displacement by the force applied inlaying-the margin of the'upper inwardly over the bottom of the shoe. In operating on a shoe having an insole provided with a lip to which the upper is fastened, the shoe. rest commonly engages the inner face of the lip, and in holding the shoe against lateral movement it acts mainly by pressure against the lip. Thus, if the lip is weak or the shoe rest is not held quite firmly against the insole, the lip may be distorted and bent over by the force applied in laying the upper inwardly over the shoe bottom. Also, the shoe rest acts as an anvil against which the fastenings are clinched, and if the lip is distorted or bent over, during the overlaying of the upper, these fastenings will be driven through the upper part of thelip, instead of lower down near its base where they should be inserted to hold the overlasted upper down flatly on the feather of the sole and in snugly against the outside face of the lip. With the upper thus improperly fastened to the lip, it tends to bridge across the feather of the sole, from its point of securement high on the lip to the edge of the sole, and the subsequent ins'eaming operation, in which the overlasted upper is attached permanently to the sole, cannot be properly carriedout.'

It is an object ofthis invention to provide in a machine of the above-mentioned character.

a simple, inexpensive, and improved means to cooperate with the shoe rest in holding the shoe against lateral displacement so as to relieve the lip of strain, and thus prevent distortion thereof during the lasting operation. To this end, the construction. herein shown comprises a member arranged to engage the insole and adapted to hold the shoe firmly'against lateral movement in one direction while permitting the operator to move it freely ina lengthwise direction to present dilferent portions of the upper to the lasting'instrumentalities. Preferably, and as herein illustrated, this member comprises a toothed wheel which is rotatably mounted in fixed relation to the shoe rest and yieldably held against, the insole. In cross-section this wheel is shaped so as to present a substantially straight side for resisting the lateral movement of the shoe by the lasting forces, and a rounding or arcuate side which permits lateral movement of the shoe in the opposite direction to allow the shoe rest to be properly positioned with respect to the insole lip. The plane of rotation of the wheel extends generally parallel to the direction in which the shoe is moved by the operator, and the wheel rolls 7 freely over the insole, during feeding of the shoe,

without, however, loosing its hold thereon.

The novel features of the invention will now be more particularly described by reference to the accompanying drawing and pointed out in the claims.

In the drawing,

Fig. 1 is a. view in side elevationjofa portion of a machine embodying the invention;

Fig. 2 is a view in side elevation, and on an enlarged scale, of certain of the parts shown in Fig. 1, and with a shoe shown in cross-section, illustrating the position of these parts at one stage in the operation of the machine; and- Fig. 3 is a sectional view taken on line III-III of Fig. 1, and looking in the direction of the arrows.

Since the invention is herein illustrated as applied to a machine constructed as fully disclosed in the Goddu patent mentioned above, only those parts of this machine as it is necessary to refer to for an understanding of the invention will be described in detail. The machine'has a shoe rest [0 for engaging the bottom of a shoe presented and held by the operator in different positions successively for progressively lasting the shoe along its opposite sides. As herein shown, by reference to the lastingof shoes in which the upper is fastened in lasted position'to a lip a on an insole b, the shoe rest is constructed andarranged to contact the bottom of the shoe, to hold the shoe against heightwise movement, and has a face II for engaging the inner side of the lip to determine the lateral position of the shoe in each lasting operation and also to clinch staples driven through the upper and the lip to fasten the upper-to the lip.- For ulling the upper in each lasting operation the machine is provided with a gripper I2 having upper-gripping jaws l4, l4 which grip the upper u and pull it heightwise of the last and inwardly over the insole, the gripper being operated in the manner and by mechanism fully described in the above-mentioned Letters Patent. 7

For laying the margin of the upper inwardly over the insole and fastening it in lasted position, as is also disclosed in said Letters Patent, the machine is provided with an overlaying member which consists of a staple-guiding nozzle l6 that is moved inwardly over the shoe bottom in a against the lip by the nozzle, a staple is driven held in the position shown by a spring 34 which bears against an arm 36 on the holder. The tension of this spring may be adjusted by means of a screw plug 38 and the normal position of the shoe rest is determined by a stop screw 40. For further details of this construction, reference may be made to the mentioned Blanchard patent.

The wheel 20 is formed so as to present a substantially straight face 42 on the side toward the shoe rest and a somewhat rounded or arcuate face 44 on the other side. When a shoe is presented to the machine by the operator the shoe rest is placed in back of the lip, Fig. 2, and the wheel 20 isforced upwards against the resistance from the nozzle by a driver ll through the upper and clinched on the face I I of the shoe-rest memher In to fasten the upper to the lip.

As will .be apparent, when the upper is pulled inwardly by the gripper, and is additionally forced inwardly by the overlaying member IS,

a considerable force is applied to the shoe tending to displaceit laterally, and to the left as viewed in Fig, 2. This force is opposed by the pressure of the face ll against the lip and also to some extent, at least, by such friction as there. .40

is between the lower end of the shoe rest and the insole due to the upward pressure of the shoe as the operator supports the shoe. Additionally to oppose this force for relieving the lip of excessive strain, thus to insure against any possi- 1 vided with a toothed wheel 20 which is rotatably mounted on the lower end of an. arm 22'. This arm is pivoted on a part of the shoe rest holder 24 by means of a stud 26 and is held yieldably downward against the insole by a spring 28, Fig. 3. When the shoe is removed from the machine such downward movement of the wheel is limited by means of a fixed pin 46 and a slot 48 in the arm 22. g

In general similarity to the disclosure of the Goddu patent, the shoe rest holder is mounted so as to permit the shoe rest to yield if upper materials of unusual thickness are clamped against the lip of the insole by the overlaying member [6, but the parts which permit such yield are here shown as constructed and arranged in the manner disclosed in United States Letters Patent No. 1,955,870, granted on April 24, 1934,

1 upon an application of Benjamin B. Blanchard.

Briefly described, the shoe rest holder, is rotatably mounted on a bracket 3|], extending from,

thehead 32 of the machine, andisyieldingly of spring 28 so that the sharpened edge of the .sole and thus effectively prevents any movement of the shoe laterally to the left as viewed in Fig. 2. With most of the lasting stress thus taken by the wheel 20, strain on the lip is greatly reduced andall danger of distortion of the lip, with its attendant deleterious effects on the proper fastening of the upper, is avoided. It may also be observed that with the wheel 20 embedded in the insole no movement of the shoe, and of the lip, relative to the shoe rest, can occur. Thus, should the lasting force ever exceed the resistance of spring 34 the shoe rest and wheel would move back together and no distortion of the lip would be produced. The wheel rotates freely during movement of the shoe in a lengthwise direction by the operator, in transferring the point of operation along the side of the shoe, so that there is no interference with the usual manipulation of the shoe in this respect. However, because of the action of the wheel 20 in holding the shoe against lateral movement, the operator is relieved of the necessity of physically supporting the shoe against such movement and his effort is correspondingly lessened.

Having described the invention, what I claim as new-and desire to secure by Letters Patent of the United States is: v

1. In a machine for shaping uppers over lasts, the combination with means for pulling a shoe upper over a last successively in different locations along the edge of the shoe bottom, means for laying the pulled marginal portion of the upper in over a sole on the last and for fastening it to a lip on the sole after each upper-pulling operation, and a shoe rest arranged to engage the sole and the inside face of the lip as the shoe is presented by the operator successively in different lengthwise positions for the operation of the machine thereon, of a member for penetrating the sole to hold the shoe against lateral movement relative to the shoe rest and thereby to relieve the strain on the lip, said member being arranged to have continuous engagement with the sole when the sole is held against the shoe rest and being adapted to permit movement of the shoe in a lengthwise direction by the operator.

2. In a machine for shaping uppers over lasts, the combination with means for pulling a shoe upper over a last successively in different locations along the edge of the shoe bottom, means for laying the pulled marginal portion of the upper in over a sole on the last and for fastening it to a lip on the sole after each upper-pulling operation, and a shoe rest arranged to engage the sole and the inside face of the lip as the shoe is presented by the operator successively in different lengthwise positions for the operation of the machine thereon, of a member for penetrating the sole to hold the shoe against lateral movement relative to the shoe rest thereby to relieve the strain on the lip, said member being yieldingly urged into continuous engagement with the sole when the sole is held against the shoe rest and being adapted to permit movement of the shoe in a lengthwise direction by the operator.

3. In a machine for shaping uppers over lasts, the combination with means for pulling a shoe upper over a last successively in different locations along the edge of the shoe bottom, means "for laying the pulled marginal portion of the upper in over a sole on the last and for fastening it to a lip on the sole after each upper-pulling operation, and a shoe rest arranged to engage the sole and the inside face of the lip as the shoe is presented by the operator successively in different lengthwise positions for the operation of the machine thereon, of a rotatable member for penetrating the sole to hold the shoe against lateral movement relative to the shoe rest thereby to relieve the strain on the lip, said member being arranged to have continuous engagement with the sole when the sole is held against the shoe rest and being adapted, by rotating, to permit movement of the shoe in a lengthwise direction by the operator.

4. In a machine for shaping uppers over lasts, the combination with means for pulling a shoe upper over a last successively in different locations along the edge of the shoe bottom, means for laying the pulled marginal portion of the upper in over a sole on the last and for fastening it to a lip on the sole after each upper-pulling operation, and a shoe rest arranged to engage the sole and the inside face of the lip as the shoe is presented by the operator successively in different lengthwise positions for the operation of the machine thereon, of a rotatable member for penetrating the sole to hold the shoe against lateral movement relative to the shoe rest thereby to relieve the strain on the lip, said member being yieldingly urged into continuous engagement with the sole when the sole is held against the shoe rest and being adapted, by rotating, to permit movement of the shoe in a lengthwise direction by the operator.

5. In a machine for shaping uppers over lasts, the combination with means for pulling a shoe upper over a last successively in different locations along the edge of the shoe bottom, means for laying the pulled marginal portion of the upper in over a sole and for fasten ng it to a lip on the sole after each upper-pulling operation, and a shoe rest arranged to engage the sole and the insole face of the lip as the shoe is presented by the operator successively in difierent lengthwise positions for the operation of the machine thereon, of a rotatable toothed wheel for penetrating the sole to hold the shoe against lateral movement relative to the shoe rest thereby to relieve the strain on the lip, said wheel being yieldingly urged into continuous engagement with the sole when the sole is held against the shoe rest and being adapted, by rotating, to permit movement of the shoe in a lengthwise direction by the operator.

LEONARD E. PROULX.

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