US2078318A - Work supporting mechanism - Google Patents

Description

April 7- J. T. FAGAN 2,078,318 WORK SUPPORTING MECHANISM Filed June 5, 1955 Fig.1. 9/6

Patented Apr. 27, 1937 UNITED STATES PATENT OFFICE WORK SUPPORTING MECHANISM Application June 5, 1935, Serial No. 25,103

8 Claims.

This invention relates to work supporting and positioning mechanism and is illustrated herein as embodied in a fastening inserting machine particularly adapted to secure sole members to shoes. In the manufacture of several types of boots and shoes it is customary to secure outsoles temporarily to shoes by the use of fastenings extending through the outsole and insole and into the body of the last to: prevent displacement of the sole during subsequent operations. For example, in the manufacture of welt shoes an outsole is temporarily secured to the shoe by an adhesive, such as rubber cement and, to prevent creeping of the outsole while theshoe is clamped to cause the outsole to conform tothe bottom of the shoe, the heel end of the outsole is fastened to the shoe by tack or other fastening which extends through the insole and into the last through a hole formed in a metal plate secured to the heel end of the last. Unless the shoe is properly located by the operator with the hole in the metal heel plate of the last directly below the nozzle of the fastening inserting machine, the tack or other fastening will strike the metal heel plate and will be crippled so that another fastening must be driven. The operator holds the shoe in his hand and l positions it in accordance with his personal judgment, the hole in the heel plate being out of sight. The proper positioning of the shoe relatively tothe nozzle, therefore, requires skill and consumes time with consequent lossof production of the machine. 7

It is also important that the heel end of the outsole be brought into close contact with the heel end of the shoe and to accomplish this the operator must exert considerable pressure against the nozzle of the machine. This exertion of pressure during each fastening inserting operation tires the operator, with the result that toward the end of a days work the operator does not exert sufiicient pressure against the shoe to bring the heel end of the outsole into close engagement with the shoe.

An object of the present invention is to provide 5 a mechanism by the use of which the above-mentioned difficulties will be overcome. To this end one feature of the invention resides in a fastening inserting machine provided with a single means constructed and arranged to engage a work piece to position the work relatively to a fastening inserting means and to support the work during the fastening inserting operation. As illustrated a bracket is secured to the machine frame and rotating roll of rubber or other resilient and somewhat yielding material is mounted in the forward end of the bracket, the roll being provided with a groove the walls of which engage the heel end of a lasted shoe to locate the heel end of the shoe longitudinally relatively to the nozzle and to force the shoe against the nozzle. The bracket is arranged to be located in adjusted position to position the groove of the roll behind the nozzle a distance sufiicient to insure that a fastening will be driven substantially into the central portion of the heel end of a shoe engaged by the roll.

With the above and other objects and features in view, the invention will be described with reference to the accompanying drawing and pointed out in the appended claims.

In the drawing,

Fig. 1 is a View in side elevation partly in section of the lower portion of the head of a machine embodying a preferred form of the invention;

Fig. 215 a plan view of the lower portion of the head of the machine; and

- Fig. 3 is a view in cross section taken along the line IIIIII of Fig. 1. y 1

The illustrated embodiment of the invention is shown as applied to a fastening inserting machine of the type disclosed in United States Letters Patent No. 1,106,393, granted August 11, 1914 on an application filed in the name of Fred. L. MacKenzie. The illustrated machine is provided with a raceway (not shown) for delivering tacks or other fastenings to a nozzle l0 having a passage through Which fastenings are driven into the work. A driver [2 is secured to the lower end of a driver bar l4 reciprocating in ways formed in the head iii of the machine which is secured to the top of a vertical column Ill.

The machine is provided with a rotating rubber roll 20 which operates to move a work piece toward the nozzle l0 to support and position the work relatively to the nozzle l0 and the driver i2 as will hereinafter be described. The roll 20 is provided with a shallow groove 22 which is shaped to fit the heel end of a lasted shoe 24. The groove 22 is so located relatively to the nozzle ID that the heel end of a lasted shoe will be centered relatively to the nozzle ID. The roll 20 is secured to a shaft 26 by a set screw 28, the shaft 26 being journaled at each end in suitable bearings 30, 32 formed in a forwardly extending bracket 34. The collar 36 is secured to the shaft 26 near one end thereof to maintain the shaft 26 and the roll 20 in position in the bracket 34. A pulley 38 is secured to the shaft 26 adjacent to the collar 36 and is provided with a V-groove to receive a round belt 40. The pulley 38 is driven from any suitable source of power and is arranged to be rotated continuously in the direction indicated by the arrow in Fig. 1. The bracket 34 is mounted in a plate 42 and may be moved forwardly or rearwardly to position the shoe 24 which is in engagement with the roll 20 relatively to the nozzle IU of the machine. The plate 42 is secured to the under side of the machine head I6 by bolts 44, 46. A T-slot :38 (Fig. 3) is formed in the bottom of the plate 22 to form ways to receive the rear portion 50 of the bracket 34, the upper part of which is shaped" to fit into the T-slot 48. By the use of this construction the bracket may readily be moved to adjusted position in which it is secured by a screw 52. The rear portion 50 of the bracket 34 is provided with a slot 56 arranged to receive the screw 52 which permits the bracket 34 to be moved forwardly or rearwardly relatively to the plate 42.

The last 58 on which the shoe 24 is mounted is provided with a metal heel plate 59 (Fig. 1) which is provided with a hole 6! through which tacks or other fastenings are driven into the last to hold a sole member BE] in position relatively to the lasted shoe 24. Thus, when the sole 5!! is to be secured to the bottom of the shoe 24 it is necessary to drive the tack through the outsole 60, the insole 62 and the hole 6| into the body of the last. The shoe 2d, therefore, must be so located with respect to the nozzle 10 that the hole in the metal heel plate 59 is directly below the nozzle l0. By adjusting the position of the roll by the use of the mechanism described above a lasted shoe will be properly located and no difficulty will be encountered in securing the sole 60 to the shoe. In operating the machine the operator grasps the lasted shoe 24, places the sole member 60 thereon, and lines up the back seam of the shoe 2 with the groove 22 in the roll 20. Since the roll 26) is continuously rotated, the friction set up between the roll 20 and the shoe 24 will cause the shoe to be moved upwardly against the nozzle H) with the result that the shoe 24 and the sole 6% will be forced together against the nozzle I0 during the operation of the driver l2.

The illustrated machine is provided with an old and well-known clutch tripping mechanism which is connected to the nozzle l0. When the nozzle 56 is engaged by the sole 6!], as above described, the nozzle i0 is moved upwardly and, through a pin and slot connection, swings a lever 62 in a counterclockwise direction as viewed in Fig. 1. This movement of the lever 62 pulls a link 64 downwardly which releases or trips the clutch of the machine in the manner disclosed in the above-mentioned Letters Patents.

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 fastening inserting machine, a nozzle, a driver for inserting fastenings into a work piece, and a power-driven rotatable member arranged to engage the work to locate the work relatively to the driver and to force the work against the nozzle during the fastening inserting operation.

2. In a fastening inserting machine, a nozzle having a passage through which fastenings are driven into a work piece, a driver for inserting the fastenings, and a power-driven roll arranged to engage the work to move the work into fastening receiving position and to force the work against the nozzle during the fastening inserting operation.

3. In a fastening inserting machine, a nozzle, a driver for inserting fastenings into a work piece, a rotating roll of somewhat yielding material having a groove arranged to engage the work to position the work relatively to the driver and to force the work against the nozzle during the fastening inserting operation.

4. In a fastening inserting machine, a nozzle having a passage through which fastenings are driven into a work piece, a driver for inserting the fastenings into the work, and a rotating roll having a groove arranged to receive the work and to position the work relatively to the driver, said roll being arranged also to move the work into fastening receiving position and to force the work against the nozzle during the fastening inserting operation.

5. In a fastening inserting machine, a nozzle having a passage through which fastenings are driven into a work piece, a driver for inserting the fastenings into the work, and a rotating roll of somewhat yielding material provided with a groove, the walls of said groove being arranged frictionally to engage the work to position the work relatively to the driver and to force the work against the nozzle during the fastening inserting operation.

6. In a fastening inserting machine, a nozzle having a passage through which fastenings are driven into a work piece, a driver for inserting the fastenings into the work, and a rotating rubber roll having a groove arranged to receive the work, the walls of said groove being arranged frictionally to engage the work to move the work into fastening receiving position, to position the work relatively to the driver and to force the work against the nozzle during the fastening inserting operation.

'7. In a fastening inserting machine, a machine frame, means for inserting fastenings in a work piece, a nozzle having a passage through which fastenings are driven into the work piece, a bracket secured to the machine frame, a rotating roll mounted in the forward end of said bracket, said roll having a groove arranged to engage the heel end of a lasted shoe to locate the shoe properly relatively to the nozzle and to force the shoe against the nozzle, and means permitting adjustment of the position of the bracket to locate the groove in said roll relatively to the nozzle to permit a fastening to be driven substantially into the central portion of the heel end of the shoe.

8. In a fastening inserting machine, a machine frame, means for inserting fastenings in a work piece, a nozzle having a passage through which fastenings are driven into a work piece, a bracket secured to the machine frame, a rotating roll mounted in the forward end of said bracket, said roll having a groove the walls of which engage the heel end of a lasted shoe to locate the heel end of the shoe longitudinally relatively to the nozzle and to force the shoe against the nozzle, and means for securing the bracket in adjusted position to locate the groove in said roll behind the nozzle to insure that a fastening will be driven substantially into the central portion of the heel end of a shoe engaged by said roll.

JOSEPH THOMAS FAGAN.

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