US2789293A - Machines for applying pressure to shoe bottoms - Google Patents

Description

April 23, 1957 M. MAESER 2,789,293

MACHINES FOR APPLYING PRESSURE TO SHOE BOTTOMS Filed Jan. 8, 1954 2 Sheets-Sheet 1 fnwnl or N 'ef/L Nasser April 23, 1957 M. MAQESER 2,789,293

' MACHINES FOR APPLYING PRESSURE T0 SHOE Bo'r'rous Filed Jan. 8, 1954 2 shee ats'heet 2 Inventor I I Mi i/z Na eJer MACHINES FOR APPLYING PRESSURE TO SHOE BOTTOMS Mieth Maeser, Beverly, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. 5., a corporation of New Jersey Application January 8, 1954, Serial No. 402,928

6 Claims. (Cl. 12-33) This invention relates to machines for operating on shoes, and more particularly to machines for applying pressure to the bottom of shoes. 7

The invention is illustrated as embodied in a machine of the type used for sole laying, direct pressure leveling or sole attaching in which a combined lasted shoe and outsole is placed on a pad box bottom downward, the pad box then being moved upwardly until the shoe moves into engagement with heel and toe abutments whereupon heavy pressure is applied to the shoe bottom, as shown in Letters Patent of the United States No. 2,716,766, granted September 6, 1955, upon an application filed in the name of Helge Gulbrandsen.

it is an object of the invention to improve the efliciency of such a machine and to facilitate its operation by providing improved means by which the shoe is automatically ejected from the pad box at the conclusion of the'pressure applying operation.

To this end and in accordance with a feature of the nited States Patent invention, there is associated with the pad box a member movable laterally thereover upon movement of the n pad box with the shoe thereon toward it lowermost position after the pressure applying operation has been completed, whereupon the shoe is pushed from the pad box onto a shelf or other suitable shoe receiving member located in proximity to the pad box.

in the illustrated embodiment of the invention, the shoe ejecting member is moved .to a predetermined posi tion in the downward movement of the pad box to eject the shoe therefrom. During this movement, a retracting spring stressed and becomes effective upon a predetermined movement of the member to eject the shoe, to retract the member. Thus the shoe ejecting member is in such position that it does not interfere with the placing of another shoe and sole on the pad box.

The above and other features of the invention including various details of construction and novel combinations of parts will now be described with reference to the drawings and pointed out in the claims.

in the drawings,

Fig. 1 is an end elevation of a portion of one form of machine in which the invention is embodied, the parts being shown in the positions assumed prior to the pressure applying operation;

Fig. 2 is a view similar to Fig. ,1 but showing the positions of the parts during the pressure applying operation;

Fig. 3 i a view similar to Fig. 1 showing the positions of the parts after the pressure applying operation has been completed and the shoe has been ejected from the pad box;

Fig. 4 is a detail view partly in section of a portion of the ejecting mechanism; and

Fig. 5 is a front elevation of the shoe engaging portion of the ejector mechanism.

The invention is illustrated as embodied in a machine having a pad box 1'0v movable verticallyto carry a shoe S into engagement with a toe abutment 12 (Fig. ,2) andv a heel abutment (not shown) thereby to apply heavy pressure to the bottom of the shoe to effect a sole laying, leveling or sole attaching operation. The pad box may be moved vertically by any suitable means and is illustrated herein as carried by a piston 14 arranged to be acted upon by fluid pressure to effect upward movement of the pad box. An example of one form of mechanism which may be employed for moving the pad box is illustrated in the Gulbrandson patent above referred to, which shows a two-station sole attaching machine but it will be understood that the invention is useful regardless of the number of stations employed in the machine.

Carried by and movable with the pad box is a bracket 16 on which is suitably supported an inclined shelf 18 having an upwardly extending wall 20 at its outer edge. This shelf is so located relatively to the pad box that it will receive a shoe S, which has been pushed laterally of the pad box, as indicated in Fig. 3.

For thus pushing or ejecting the shoe from the pad box .an ejecting member 22 (Fig. 5) is provided. This ejecting member comprises a plate 24 carrying a pair of rubber pads 25 arranged to engage the shoe at separate points and to move the shoe laterally of the pad box when the shoe ejecting member is moved from the position shown in Fig. l to the position shown in Fig. 3, this movement of the shoe being effected without injuring the finish thereof.

The shoe ejector 22 is carried for angular adjustment by a short rod 26 projecting from an end of an arm 28 movable laterally of the pad box. The ejector 22 is held by a set screw 30 in the desired position of adjustment. The arm 28 is guided in its movements laterally of the pad box by a pair of plates 32 (only one of which is illustrated) carrying a pin 34 supporting the lower surface of the arm 28 to maintain the arm in the proper heightwise relationship to the pad box. The plates 32 are carried .by an arm 36 secured to the pad box for movement therewith. To limit the retractive movement of the arm 28 thereby to determine the retracted position of the shoe ejector, the arm carries an upwardly projecting pin 38 arranged for engagement with a pin 40 carried by the plates 32 above the arm 28.

For moving the .arm 28 laterally of the pad box, a lever 42 is pivoted at 44 to the rearward end of the arm, the lower end of the lever being journaled on a fixed shaft 46 carried by cars 48 of a bracket 50 secured to the pad box. A torsion spring 52 surrounding the shaft 46 has one end engageable with the upper surface of the bracket 50 and the other end engageable with a screw 54 threaded into the lever to urge the lever 42 in a counterclockwise direction normally to maintain the arm 28 in the position shown in Figs. 1 and 2.

During the descent of the pad box from the position of Fig. 2 to the position of Fig. 3 the lever 42 is moved in a clockwise direction to move the arm 28 to the right thus ejecting the shoe. Mechanism for this purpose includes a single tooth ratchet 56 carried by the shaft 4 :6 and movable with the lever 42. Journaled on the shaft 46 and movable independently of the lever 42 is an arm 58 carrying at its outer end a roll 69 arranged with the pad box in its loading position for engagement with a vertically adjustable stop 62. This stop includes a bar secured to a bracket 64 by a screw and slot connection 66, the bracket being carried by the frame of the machine. The heightwise position of the stop 62 determines the time in the downward movement of the pad box when the roll engages the stop and the arm 58 is moved in a clockwise direction from the position of Fig. 2 to that of Figs. 1 and 3..

Pivoted to the arm 58 at 68 is a pawl 70 having a tail portion 72 .engageable with a pin '74 in a downwardly and rearwardly extending fixed arm 76 adjustably secured by a set screw 73 to the shaft 46. A tension spring 80 acts between the outer end of the arm 58 and the tail .72 of the pawl 70 thereby urging the tail end of the pawl and the outer end of the arm 58 toward each other. The outer edge of the pawl is curved in such manner that, with the roll 60 out of contact with the stop 62, a cam action is exerted on the pin 74 so that the pawl 70 and the arm 58 assume the positions shown in Fig. 2, with the end of the pawl against the tooth of the ratchet 56.

Upon downward movement of the pad box, theroil 68 engages the stop 62 at a certain time depending upon the heightwise position of the stop 62 thereby to rock the arm 58 in a clockwise direction. This movement is transmitted through the pawl 70 and the ratchet 56 to the lever 42 so that the arm 28 moves to the .right as viewed in Fig. 2-and the ejector 22 forces the shoe from the pad box as shown in Fig. 3. When the arm 58 is moved into a predetermined position as shown in Fig. 3 the tail of the pawl engages the pin 74 so that, upon further clockwise movement of the arm 58, the pawl is moved in a counterclockwise directionwith respect to the arm 58 out of operative relation to the ratchet 56. The torsion spring 52 is now effective to move the lever 42 in a counterclockwise direction into the position shown in Fig. 1 whereupon the ejector returns to its initial retracted position and the pad box is clear for the loading of another shoe thereon. During upward movement of the pad box from the position shown in Fig. 1 into the position shown in Fig. 3 the arm 58 is moved by the spring 80 in a counterclockwise direction until it and the pawl 70 assume the positions shown in Fig. 2 with the end of the pawl again in driving engagement with the tooth of the ratchet.

From the above it will be seen that the ejector mechanism is operated automatically in the downward move ment of the pad box and at a predetermined time in such movement tomove the shoe from the pad box onto the receiving tray 18 to clear the pad box for the loading of another shoe thereon. Following the ejecting of the shoe from the pad box, the arm 28 and the ejector 22 are returned into inoperative positions so as not to interfere with the placing of another shoe on the pad box. Thus this mechanism relieves the operator of the necessity of removing the shoe from the pad box at the completion of the pressure applying operation Without in any way interfering with the placing of another shoe thereon. In this way the efliciency and ease of operation of the machine are improved thereby contributing to a high daily production thereof.

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 machine for applying pressure to shoe bottoms, a vertically movable pad box, a shoe ejector movable laterally over said pad box for pushing a shoe therefrom after the shoe has been operated upon, spring means normally acting to hold said ejector in a retracted position, means operative during descent of the pad box at the completion of the shoe bottom pressing operation for moving said ejector laterally of the pad box to push the shoe therefrom, and means for rendering said lastnamed means ineffective prior to completion of downward movement of the pad box whereupon said spring means returns the ejector to its retracted position.

2. In a machine for applying pressure to shoe bottoms, a pad box movable upwardly to force a shoe carried thereby against a holddown member to apply pressure to the bottom of a shoe, means movable with the pad box and movable laterally thereof for ejecting a shoe therefrom at the conclusion of a pressing operation, means normally maintaining the ejecting means in a retracted position at one side of the pad box, means for moving the ejecting means laterally of the pad box during downward movement of the pad box awayfrom the holddown member, and means for thereafter disconnecting the moving means from the ejecting means whereupon the ejecting means is returned to retracted position and held there by said maintaining means.

3. In a machine for applying pressure to shoe bottoms, a pad box movable upwardly to force a shoe carried thereby against a holddown member to apply pressure to the bottom of a shoe, means movable with the pad box and movable laterally thereof for ejecting a shoe there from at the conclusion of a pressing operation, means normally acting to move the ejecting means into a retracted position at one side of the pad box, means operative in response to downward movement of the pad box at the completion of the pressing operation for moving said ejecting means laterally of the pad box to eject the shoe therefrom, and means operative when the ejecting means has been thus moved into a' predetermined position for rendering the moving means thereafter ineffective whereupon theejecting means is returned to its retracted position.

4. In a machine for applying pressure to shoe bottoms, a vertically movable pad box, an arm extending laterally of the pad box, a shoe engaging member carried by one end of said arm and movable therewith over the surface of the pad box to eject a shoe therefrom, a downwardly extending lever to which the other end of said arm is pivoted, means carried by the pad box for supporting said lever for swinging movements to move the arm and the shoe engaging member between a retracted position at one side of the pad box and a shoe ejecting position above the pad box, a spring acting on said lever to move the arm and the shoe engaging member into said retracted position, means operative upon downward movement of the pad box for moving said lever in the opposite direction against the action of said spring, and means operative toward the end of the downward movement'of the pad box for rendering said moving means ineffective whereupon the lever is acted upon by the spring to move the arm and the shoe engaging member to a retracted position.

5. In a machine for applying pressure to shoe bottoms, a vertically movable pad box, an arm extending laterally of the pad box, a shoe engaging member carried by one end ofrsaid arm and movable therewith over the surface of the pad box to eject a shoe therefrom, a downwardly extending lever to which the other end of said arm is pivoted, means carried by the pad box for supporting said lever for swinging movements to move the arm and the shoe engaging member between a retracted position at one side of the pad box and a shoe engaging position above the pad box, a spring acting on said lever to move the arm and the shoe engaging member into said retracted position, a ratchet carried by said lever, a pawl cooperating with said ratchet, a lever carried by the pad box and extending laterally thereof, means pivotally connecting said pawl to said last-named lever, a fixed abutment carried by the machine in position to be engaged by the end of said last-named lever during downward movement of the pad box whereby the lever is swung and the pawl carried thereby actuates the ratchet to move the downwardly extending lever against the action of the spring thu moving the arm and the shoe engaging member laterally over the pad box to eject the shoe therefrom, and means operative upon movement of the lastnamed lever. to a predetermined position for moving the pawl away from the ratchet whereby said spring returns the arm and the shoe engaging member to retracted position. Y

6. In a machine for applying pressure to shoe bottoms, a vertically movable pad box, an arm extending laterally of the pad box, a shoe engaging member carried by one end of said arm and movable therewith over the surface of'the pad box to eject a shoe therefrom, a downwardly extending lever to which the other end of said arm is pivoted, means carried by the pad box for supporting said lever for swinging movements to move the arm and the shoe engaging member between a retracted position at one side of the pad box and a shoe engaging position above the pad box, a spring acting on said lever to move the arm and the shoe engaging member into said retracted position, a ratchet carried by said lever, a pawl cooperating with said ratchet, a lever carried by the pad box and extending laterally thereof, means pivotally connecting said pawl to said last-named lever, a fixed abutment carried by the machine in position to be engaged by the end of said last-named lever during downward movement of the pad box whereby the lever is swung and the pawl carried thereby actuates the ratchet to move the downwardly extending lever against the action of the spring thus moving the arm and the shoe engaging member laterally over the pad box to eject the shoe therefrom, means operative upon movement 0 of the last named lever to a predetermined position for moving the pawl away from the ratchet whereby said spring returns the arm and the shoe engaging member to retracted position, and means operative during upward movement of the pad box for returning the pawl into operative engagement with said ratchet.

References Cited in the file of this patent UNITED STATES PATENTS

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