US1815325A - Seam forming and staying machine - Google Patents

Description

July. 21, 1931. 1 1,815,325

SEAN FORMING AND STAYING MACHINE Filed Dec. 31, 1928 2 Sheets-Sheet l INV EN TOR. George 6'. Per/rims;

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July 21 1931. a. G. PERKINS SEAM FORMING AND STAYING MACHINE Filed Dec. 51, 1928 2 Sheets-Sheet 2 INVENTOR.

George G. Perkins,

A TTORNEY.

Patented July 21, 1931 UNITED STATES PATENT GFFHIE GEORGE G. PERKINS, OF LYNN, MASSACHUSETTS SEAM FORMING AND STAYING MACHINE The invention relates to improvements in seam forming and staying machines and consists of a device for pressing out a seam such as is used on the heels of shoes and projects from being irritated by it. Simultaneously with pressing out the seam it is covered with adhesive tape to stay it in position thereby making the seam as smooth and fiat as possible under uneven conditions.

The invention further consists of a rolling device having a radial pressure roll on a direct radial line with the cooperating forming roll between which the forming and staying operations are made.

The invention further consists of a pres sure roll which will automatically adjust itself to the varyingthicknesses of the leather and seam and automatically lay on a. suitable adhesive tape evenly and securely on the seam and the surfaces on each side of the seam.

The object of the invention is to provide a seam forming and staying machine by pressing down the seam as much as possible, then laying on a strip of adhesive tape and rolling it down evenly and accurately under the varying conditions and surfaces.

Referring to the figures, Fig. l is a side elevation of the seam forming and staying machine;

Fig. 2 is a front elevation of the same;

Fig. 3 is a side elevation of the seam forming and staying roll with an adjustable tape guide in position;

Fig. 4 is a fragmentary view showing an adjustable limiting stop for the pressure roll;

Fig. 5 is a side elevation of the seam forming and staying roll with the material support in position and the tape extending over the material; 7 r

Fig. 6 is a front'elevation of the same;

Fig. 7 is a cross section of the forming and pressure roll in cooperative relation with the radial devices;

Fig. 8 is a side elevation of the same;

Fig. 9 shows the material having a seam to be operated upon i Fig. 10 shows the material located on the supporting device;

inwardly to prevent the wearer of the shoe v Fig. 11 shows a part of the forming roll and the pressure roll in elevation with the material and tape in position as it passes between the rolls;

Fig. 12 is an enlarged view of the seamed material with the tape in position and rolled down before the material is turned over;

Fig. 13 shows the material and the tape rolled down and turned over into position for use; and

Fig. 14 shows a plurality of pieces of seamed material as they are taped and run off the machine connected by the tape after which it is cut and the pieces separated.

Referring to the drawings, 10 indicates a frame for supporting the improved seam forming and staying device consisting of a radial flexible roll A, a rigid forming roll B and a tape roll C operated by the driving wheel 11, which receives its power from any suitable source. The wheel 11 drives the shaft 12, pinion gear 13, gear 14, shaft 15, and the forming roll B from which the other members receive their various movements. The gears form a suitable speed reducing device adapted for the most efficient speed required to operate the devices.

Mounted in the frame 10 is a shaft 16 having a lever 17 at one end and held downwardly by the spring 18. The opposite end of the shaft extends through the machine and is adapted to support the U-shaped frame 19,- the opposite end of which supports the pressure roll A.

Secured to the frame 19 is a pin 20 to which is anchored a spring 21, the opposite end of which is secured to the pin 22, secured to the frame 10. The springs 18 and 19 pull from opposite directions, but at the same time they constantly pull the U-shaped frame upwardly. These two springs are merely to increase the pressure between the operating rolls on the material passing through.

The pressure roll frame 19 is provided with a stop lever extension 28 formed at right angles and integral with the frame. The ex tension 23 is the pivotal point of the lever 19 as it swings on the shaft 16 and is limited in its upward movement by an adjustable stop 24. The stop limits the upward movement of til) the pressure roll A to prevent the adhesive tape from sticking to the rotating roll when no material is passing through. That is, when there is no operation taking place, there is sufficient space between the rolls to allow the tape to hang loose between them. This distance can be adjusted by the nut being released and the screw 26 turned to suit the conditions and then locked again by the nut.

Located on the opposite end of the U- shaped lever 19 is a shaft 27 on which is free to turn the pressure roll A. The pressure roll A is made in three parts indicated by the numerals 28, 29 and 30. The middle part 28 is free to turn on the shaft 27, but has no radial movement. The two side members 29 and 30 of the said pressure roll A are also free to rotate on the shaft 27, but have sufficient clearance between the shaft 27 and the hubs 31 and 32 of the members 29 and 30 and the center members 28 to allow the members 29 and 30 to move radially in a predetermined time and position.

The predetermined radial movement of the members 29 and 30 is obtained by suitable plungers 33 and 3a located and free to more radially in the rigid shaft 27 against the members 29 and 30 by the springs 35 and 36 To obtain this definite upward thrust of the plungers 33 and 3A a stationary shaft is provided. Slots 3? and 38 are formed in the shaft in the direction of the radial thrust required and the plungers are then set in position. Clearances 39 and -10 are provided which permits the members 29 and 30 of the roll A to move upwardly atall times in the direction of the thrust towards the forming roll. The portion ll of the center member of the roll A presses down the seam as it enters the annular depression 42 of the forming roll B. The seamed material and the tape pass through the rolls A and B and and are pressed downwardly while the portions l3 and A l extend by the seam and press the tape in position on the lower surfaces. By this construction an even pressure is obtained on uneven surfaces constantly and at all times when the work is passing through the rolls.

The roll B is the forming roll and takes the pressure thrust from the roll A to press down the seam and place the tape in position simultaneously. A ro l of tape D provided which allows the work to be carried on continuously. The tape roll C rotates on the shaft 45 between the supporting disks. The shaft is supported on the arm fi secured to the frame 10. The tape D passes down through the swinging guide A? and between the rolls A and B. Secured to the guide 4-7 is a material guide A8 having a depression 49 for receiving the material. The material E passes into the depression 49 which is in direct line with the material supporting member 50 and guides the material through its various operations. The material support 50 is secured to the arm 19 and moves with it at all times. The guides 47 and l8 are fastened to the arm 51 which is pivoted at 52 to the frame 10.

The arm and the guides are constantly pulled downwardly by the spring 53 which is anchored at one end to the arm 51 and the opposite end is anchored to the frame 10. This construction allows the guide members to adjust themselves to the varying conditions of the operations of the material passing between the rolls A and B.

In operation the material E is fastened together by a threaded seam which must be pressed down and stayed bythe machine before is can be used. The material E is placed on the support 50 and passes through the slot 49 and in turn between the rolls A and B: Simultaneously with this feeding .iovementthe tape is fed down by the rotation of the roll B and caused to pass through. The surface 41 of the member 28 presses down the seam and the side rolls 29 and 30 extend beyond the central member and force the tape down on the seam and stick it down over the sides of an uneven surface whichconstitutes the main embodiment of my invention. The clearance between the members of the roll A permit a radial pres- 1 sure at apredetermined time to obtain a maximum pressure at the point where the rolls meet, and this is accomplished by the device hereinbefore described.

It will be seen in Fig. 9 that the material is sewed together leaving a projection above the seam which must be pressed down before it can be used. In Fig. 10 the material is placed on the support 50 preparatory to being fed into the machine, as shown in Fig. 11. In Fig. 13 is shown the material pressed and then turned over to be used. The operations are continuous as long as the tape lasts, and all the members are connected together by the tape, and then cut apart.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. A seam pressing and staying device comprising a forming roll rotatably driven from a suitable source of power, a staying tape fed from a roll secured to the frame of the machine, a support for the seamed material, a shaft supported on a U-shaped frame, a central roll loosely mounted on a shaft for pressing down the seam, flexible.

side rolls also mounted on the shaft with sufficient clearance in relation to the adjacent members for pressing down the tape on both sides of the seam, a spring for putting the roll under pressure, an adjustable stop in the frame of the machine in relation to the form ing roll to prevent the tape from being carried along with the rotation of the said forming roll, a swinging arm, and a guide on the arm for directing the tape.

ies

L1 is 2. In a machine for pressing and staying seams of material such as shoe uppers, having a rotating forming roll, a main frame for supporting the forming roll, a pressure roll, a frame for supporting the pressure roll pivotally secured to the main frame, a staying tape supply, a support for the seamed material and means in relation to the said pressure roll for placing and staying the tape over an uneven surface.

3. In a machine for pressing and staying seams of material such as shoe uppers, having a rotating forming roll, a main frame for supporting the forming roll, a pressure roll, frame for supporting the pressure roll pivotally secured to the main frame, a staying tape supply, a support for the seamed material, a ri id shaft supported by the pressure roll frame, a central r-oll disk mounted on and free to rotate in the rigid shaft, annular shoulders cut on both sides of the roll, side disks forming part of the pressure roll located on both sides of the central roll, and means in relations to the three roll members for placing and staying the tape over uneven surfaces.

4. In a machine for pressing and staying seams of material such as shoe uppers, having a rotating forming roll, a main frame for supporting the forming roll, a pressure a roll, a frame for supporting the pressure roll pivotally secured to the main frame, a staying tape supply, a support for the seamed material, a rigid shaft supported by the pressure roll frame, a central roll disk mounted on and free to rotate in the rigid shaft, annular shoulders cut on both sides of the roll, side disks forming part of the pressure roll located on both sides of the central roll, in eccentric relation to the rigid shaft, annular depressions cut in the side disks of larger diameter than the shoulders cut on the central roll and means in relations to the side disks and the stationary shaft for maintaining a constant excentricity between the shoulders on the central disk and the depressions in the side disks for placing and staying the tape over an uneven surface.

5. In a machine for pressing and staying seams of material such as shoe uppers, having a rotating forming roll, a main frame for supporting the forming roll, a pressure roll, a frame for supporting the pressure roll pivotally secured to the main frame, a staying tape supply, a support for the seamed material, a rigid shaft supported by the pressure roll frame, a central roll disk mounted on and free to rotate in the rigid shaft, annular shoulders cut onboth sides of the roll, side disks forming part of the pressure roll located on both sides of the central roll, in excentric relation to the rigid shaft, annular depressions out in the side disks of larger diameter than the shoulders cut on the central roll, slots cut in the stationary shaft, springs 10- cated in these slots, movable caps located between the springs and the inner surface of the hub of the side disks for maintaining a constant excentricity between the members for causing a constant predetermined thrust in line with the pressure so the uneven surfaces on the pressure rolls will cooperate with the uneven surfaces of the forming roll for placing and staying tape over uneven surfaces.

6. In a machine for pressing and staying seams of material such as shoe uppers, having a rotating forming roll, a main frame for supporting the forming roll, a pressure roll, a secondary frame for supporting the pressure roll pivotally secured to the main frame, a staying tape supply, a support for the seamed material and means for adjusting the frame to determine the working relation between the pressure and forming rolls.

7 In a machine for pressing and staying seams .of material such as shoe uppers, having a rotating forming roll, a main frame for supporting the forming roll, a pressure roll, a secondary frame for supporting the pressure roll pivotally secured to the main frame, a staying tape supply, a support for the seamed material, a crank arm integral with the secondary frame, arm adjustable stop in relation to the crank arm of the frame to determine the working relation between the pressure and forming rolls.

GEORGE G. PERKINS.

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