US1007766A

US1007766A - Pulling-over machine.

Info

Publication number: US1007766A
Application number: US38679907A
Authority: US
Inventors: Orrell Ashton
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1907-08-02
Filing date: 1907-08-02
Publication date: 1911-11-07
Anticipated expiration: 1928-11-07

Description

0. ASHTON.

PULLING-OVER MACHINE. APPLICATION FILED AUG. 2, 1907.

Patented Nov. 7, 1911.

2 SHEETS-SHEET 1.

0. ASHTON.

PULLING-OVER MACHINE. 4PPLIOATION FILED AUG. 2, 1907.

1,007,766. Patented Nov. 7, 1911.

2 SHEETSSHEET 2.

Jig. 6.

' procedure means is usually employed for UNITED STATES PATENT OFFICE.

ORRELL ASHTON, OF LAWRENGE, MASSACHUSETTS, ASSIGNOR TO UNITED MA- CHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PULLING-OVER MACHINE,

Specification of Letters Patent.

Patented Nov. '7, 1911.

Application filed August 2, 1907. Serial No. 386,799.

To all whom it may concern:

Be it known that I, ORRELL AsH'roN, a citizen of the United States, residing at Lawrence, in the county of Essex and Commonwealth of Massachusetts, have invented. certain Improvements in Pulling-Over Machines, of which the following description,

in connection with the accompanying draw- 7 ings, is a specification, like reference characters' on the drawings indicating like parts in the several figures.

This invention relates to machines for use in the manufacture of boots and shoes and particularly, to mechanism for working an upper over. a last.

The invention is herein shown as embodied in the upper pulling'and holding mechanism of a pulling-over machine of the type shown in United -States Letters Patent No. 663,777, granted on the application of Ronald F. McFeely, but the invention is applicable also to other machines.

In working an upper over a last, particularly if the upper is not large enough to overlap the bottom of the last for a considerable distance, it is desirable that the grippers release the upper and withdraw to give place to the tacking mechanism before the tacks. are driven for securing the upper in overworked position. To permit this holding the upper to prevent it from slipping back during the interval between its release by the grippers and the insertion ofthe tacks.

Another object of this invention is to provide improved means for holding the upper and for pressing it into position to be secured. It frequently happens in pulling shoes having small uppers that the grippers,

especially the forward grippers engaglng the tip seam, are little if any above the plane of the shoe bottom when the upper has been pulled. It is therefore advanta= geous to hold the upper by means which does not necessarily extend above the plane of the shoe bottom orextend over the bottom of the shoe and can clamp the upper against the side of the last even though the grippers occupy the position described. It is important, however, that the upper be eventually pressed down upon the last bot tom or upon the innersole to force it into position to be fastened by the securing tacks.- I have provided according to one feature of this invention upper holding means against the side of the last at andadjacent to the edgeof the last. Preferably there is provided in combination with this upper holding means a presser arranged to occupy a position back of the upper engaging face of/the clamp when the latter is moved into holding position and adapted to'be actuated over the last bottom after the grippers have released the upper. With this device arranged as described the upper is secured by the clamp'before the grippers need to be withdrawn to permit the presser to come. into operative position. The front and rear pairs of gripper jaws are usually spaced apart a short distance, thus permitting free-v dom of relative movement of the pairs of jaws. The presser is preferably arranged relatively to said aws to act upon and wipe as well as press into overworked position the portion of upper between the front and rear pairs of jaws. The presser is shown to be of less width than the space between 'the securing tacks and as located between the tacks and extending over the shoebottom beyond said tacks. With this arrangement a narrow presser satisfactorily forces the upper into position to be secured.

These and other features of the invention will be more fully explained in the following description and then pointed out in the 1 relative positions of the grippers, the

-.with t e present invention and showing the clamps, and the pressers while the grippers are pulling the upper, the clamps being in a retracted position out of contact with the shoe to leave the upper free to be stretched about the last. Fig. 2 is a view on a larger scale of the parts concerned with this invention, and shows the clamps in engagement with the upper while the grippers still retain their hold upon-it. Fig. 3 is a similhr View after the grippers have released the upper and the presser has been advanced into. operative position. Fig. 4 1s a perspective view showing the relative positionsof the parts immediately after the securing tacks havebeen driven and before the presser and clamp are retracted. Fig.

5 is a side elevation of the grippers partly in section; Fig. 6 is a section on line 66 of, Fig. 5; Fig. 7 is a section on line 77 of Fig. 5; Fig. 8 is a section on line 8--8 of Fig. 6; Fig. 9 is a detail view of a modi-' fication taken in the same plane as Fig. 6.

The frame 2, which may be the frame of the pulling-over machine shown in saidLetters Patent No. 663,777, supports levers 4 that are fulcrumed at 5 and from which are suspended bars 6 as shown in Figs. 1 and 5. There are in the machine sets of grippers for engaging the upper at opposite sides of the last which is held from displacement byv a sole rest 7 while the upper, is being pulled. A. set of grippers is-illustrated in Fig. 5 and comprises a plurality of pairs of jaws connected through casings 8 and'9 with the one operating bar 6. One jaw 10 of each pair of jaws is pivotally connected to its casing while the'other jaw 11 of each pair is rigidly attached to the casing which is invention.

shaped to receive it between two edge plates 12, theadj-acent faces of'which may be corrugated to fit similar corrugations on the edges of the jaw. The jaw is clamped between the edge plates by a connecting member- 14, shown best in Fig. 8, which has a conical head fitting a similarly shaped recess in one edge plate. It also has screw threaded engagement with a tapering looking member 15 that is split at 16 so that it will be contracted and, looked upon the holding member as it is drawn into its conical recess in the casing; The construction thus far described is'not a part of the present The gripping faces of each of the

jaws

10 and 11 are formed by alternate teeth or ribs 20 and plane faces 22 which are so arranged .in the assembled Jgrippers' that the teeth or ribs on the jaw 10 will'be opposed to the plane faces on the jaw 11 and the teeth or ribs on the jaw 11 w' bite or indent the stock against the plane -/faces on the jaw 10. The lower tooth or ri 25 of the jaw 10, which engages the outer side of the upper leather, is rounded or blunt so that it will.

not scrape or scar the upper as the stock jaws release their grip 3O throughwhich the j aw 10 is first rocked to grip the stock and then, when it can rock no farther, the two jaws are uplifted to pull the stock. For. this purpose the controller shown in'Fig. 6, which is a section through the casing 8 and the forward pair of jaws. The other controller is the same. A cross bar 35 is secured to the controller for the rear pair of jaws and extends across to the othercontroller where it is received between ledges 36 on the outer side of the controller. The cross bar is notched to provide a narrow portion forming a lost motion connection with the controller for the forward jaw. The operating bar has a depending hook 38 which engages the middle portion of the cross bauand through which the controlling devices are lifted for closing and then raising the jaws. By reason of the lost motion connection the rear jaws are closed and raised to pull the upper about the ball of the last to a predetermined extent before the forward jaws are closed and raised to pull the upper in the region of the toe tip seam. If desired, the extent of the relative movement of the pairs of jawsmay be adjustably varied, as, for example, by provid ing'the reduced portion ofthe cross bar 35 withan adjustable contact member 39, as shown in-Fig. 9. D

After the upper has been pulled it is to be secured tothe innersole by tacks,'and last supporters 45 are provided which are actuated from the positions shown in Fig. 1 into the position shown in Fig. 3 to sustain the last against the impact of the tackingdevices. It is desirable that the grippers be moved out of-the way of the tacking devices, particularly when the uppers are small so that'the marginal edge of the upper does not extend far over the edge of the last and allow of the jaws being carried inwardly far enough while holding to the upper to give room for the tacking devices to work. Be-

fore the jaws can release the upper it is of course necessary to clamp it to prevent it the last supporter with a slide 50 upon which the clamp is mounted. The clamp is a block syviveled in itsslide and long enough -to engage a considerable portion of up er. The block preferably has ap actingace formed to have continuous or substantially continuous contact with the upper through: out its length from front to rear and ar; ranged to pinch. or grip the upper against the side of the last below the gripper jaws: The clamp is mounted in a plane with rela-v tion to the sole rest 7 and the last supporters 45 so that it is locatedfbelow the last bot- 'tom. By reason of this fact the clamp can come into position to pinch the upper istic of the clamp is that it does not include ranged intermediate the two any portionor member which projects in advance of it to extend over the last bottom and which would interfere with the clamp coming into holding position if the grippers did not carry the upper over the last bottom, as for example, under the conditions illustrated in Fig. 2.

A presser 55 is'employed for forming the upper over the last bottom and pressing it down upon the innersole into position to receive the securing tacks. This presser is secured to the lower face of the tack carrying arm 56 by the bolt 57, which also passes 'through a slotted plate 58 which rides over the clamp slide 50 and engages a stop face 59 on the back of the clamp to determine the position with relation to the edge of the last at which the tacks shall be driven by the tacking devices. The tack arm is arranged to engage a tripping device 60 carried by one of the controlling devices ,of the grippers to disengage the hook 38 from the crossbar 35 and permit thejaws to open for allowing the upper to pull out of them as the grippers swing inwardly in advance of the tack arms. The presser is arpairs of gripper jaws so that it may engage and wipe inwardly the portion of stock between the pairs of jaws which has not'been subjected to the same straining as the portions of stock directly engaged by the aws. To this end the presser is formed as a relatively narrow finger and the fastening tacks are driven at opposite sides of it as shown in Fig. 4.

In the use of the invention'in the form in which it is shown as embodied, a shoe is presented with the bottom against the sole rest' 7 and the upper between the jaws of the open grippers. The operating bars are then raised. The first effect is to close the rear jaws which engage the belt of upper extending about the last at the base of the instep and back of the position of the toe tip seam. As soon as these j awsare closed they are uplifted and pull the upper about. this portion of the last; When these jaws have moved through a predetermined distance governed by the extent of lost motion between the cross bar 35 and the ledges 36, and

have initially pulled the upper back of the toe tip seam, then the forward pair of jaws is closed and thereafter uplifted to-pull the upper in the region of the tip seam. The last supporters then move inwardly and set the side clamps against the sides of the last below the plane of the last bottom to grip.

the upper and prevent it from slipping back. The tack arms next swing inwardly,

releasing the grippers which retire as the arms advance. The pressers reach the edge of the last after the grippers are released and move over the edge and bottom of the last as the arms swing inwardly wiping over the upper that was between the pairs of jaws and pressing the upper against the innersole into position to receive the fastening tacks, which are then driven, after which the parts may return to starting position. It will of course be understood that while for the purpose of explanation this invention is here shown as applied to the machine of said Letters Patent No. 663,7 77 for which it was especially devised, it may also be used in other machines.

Having disclosed the nature of the invention and described a construction embodying the same in the best form now known to me, I claim as new and desire to secure by Letters Patent of the United States:

1. In a machine of the class described having duplicate devices for operating upon oppos te sides of the shoe at the same time, the combination with grippers for pulling an upper over a last, and tacking mechanism for fastening the upper,-of means for releasing the' grippers from the upper before the tacks are driven, and'means suitably actuated to clamp the upper against the side edge of the last before the grippers are released and arranged for holding the upper while the tacks are being driven, said latter means being located entirely below the plane of the last bottom and formed to engage an extended area of the upper along the edge of the last.

2. In a machine of the class described having dupiicate faces for operating upon opposite sides of the shoe at the same time, the combination with grippers for pulling an upper over a last, and tacking mechanism for fastening the upper, of means for releasing the grippers from the upper before the tacks are driven, and means for holding the upper while the tacks are being driven, said latter means being located wholly below the level of the last bottom and comprising a block having an uninterrupted acting face for engaging an extended area of the upper on the side of the shoe, and. means movable over the last bottom between the'clamping and the gripper releasing movements to wipe the upper into position to be tacked.

3. In a machine of the class described, the combination with two pairs of gripper jaws for engaging adjacent portions of an upper and pulling it over a last, tacking mechanism for securing said portions of upper, means to release the jaws before the tacks are driven, means for clamping the upper to hold it until the tacks are driven, and means operatively connected with the tacking mechanism to be actuated thereby and constructed and arranged to. wipe over the and pullingit over alast, tacln'ngmec a-.

nism for securing "said portions Iof upp r,

means to release the jaws lgefolies the?tacks are driven, means for clamping tli aipperito holdigthe upper.

hold it until the tacks are driven ,:akpresser independent of the clamping means, and means for actuating the presser over the last bottom after the clamp has come into holding engagement with the upper, said parts being constructed and arranged to cause the. presser to advance and the jaws to be then released during the movement of the tacking mechanism into driving position.

5. In a machine of the class described, the combination with tWo pairs of gripper jaws for engaging adjacent portions of an upper and pulling it over a. last, tacking mechanism for securing each of said portions of upper, and a wiper constructed and arranged to advance over. the shoe bottom between the tacking points in advance of the tack driving operation for working the portion of upper located between the pairs of jaws over the innersole into position for the upper to be secured.

6. In a machine of the class described the combination with two pairs of gripper aws having their adjacent edges spaced apart, of the tacker having a driver opposite to each pair of jaws and a wiper 55 arranged to advance between the pairs of jaws for the purpose described.

7. In a machine of the'class described, the combination with the grippers of the tacker having the wiper- 55 to slide over the shoe bottom in rubbing contact 'with the upper, and the side clamp comprising the last supporter. and the upper clamping member lS connected byzan equalizer and both located below the-k'plane of the wiper for the purpose described.

about an axis pe bottom and having a ong upper clamping 'andthe side clamp comprising the slide and the block 48 swiveled on the slide to endicular to the shoe face;=.1extenc1ing along the edge of the last to 9. 71In a machineof the class described, the

combination with the grip ers of the tacker having the wiper to shde over the shoe bottom in rubbing contact with the upper and the side clamp comprising the block 48 having a long acting face extending longitudinally of the shoe edge to pinch or grip the upper against the side of the last below the wiper,and the slide 5O in which the block 48 is swiveled to allow it to have substantially continuous bearing on the shoe throughout the length of its acting face, substantially as described.

l0. In'a machine of the class'described,

the combination with the grippers of the double tacker, the wiper secured to the lower face of the tacker'and presenting a narrow tongue 55 arranged between the two tack inserting points, a slotted plate 58 underlying the wiper and adjustably attached to the tacker by the same fastening, and the side clamp block 48 engaging the side face only of the shoe and having the abutment 59 for engagement by the end of saidplate 58 to limit the advance of the wiper and the tacker over the shoe bottom and cause the side clamp block to pinch the upper against the side of the last with the force overcome in stopping the tacker.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ORRELL ASHTON.

Witnesses:

ARTHUR L. RUSSELL, ELIZABETH C. COUPE.

Qosrecticfls in Letters Patent No. 1,007,766.

l Letters Patent should be read with these corrections therein that It is hereby certified that in Letters Patent No. 1,007,766, granted November 7,

1911, upon the application of Orrell Ashton, of Lawrence, Massachusetts, for animprovement in Pulling-Over Machines, errors appear in the printed specification requiring correction as follows: Page 3, line 13, for the word forming read forcing, came page, line 104, for the Word faces read dem'ces, and that the said conform to the record of the case in the Patent Ofice.

Signed and sealed this 5th day of Decemher, A. D., 1911."

[SEAL] C. C. BILLINGS,

Acting Gammissz'oner of Patents.

the same may