US1123662A

US1123662A - Pulling-over machine.

Info

Publication number: US1123662A
Application number: US71308312A
Authority: US
Inventors: Charles Fawcett Bennion
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1912-08-03
Filing date: 1912-08-03
Publication date: 1915-01-05
Anticipated expiration: 1932-01-05

Description

O. F. BENNION. PULLING-OVER MACHINE.

GATION TILED 11116.3, 1912.

AYPLI r0 1 9 1 r0 J d e LIU n Du t a P 4 SHEETS-SHEET 1.

THE NORRIS PETERS C0. PHOTO-LITHOU WASHINGTON, D. c

C. F. BENNION. PULLING-OVER-MAGHINE.

APPLICATION FILED AUG.3, 1912.

1,128,662., Patented Jan. 5, 1915.

4 SHEETSSHEET 2 IHE NORRIS PETERS 60.. PHOTO LI7HO.. WASHING roN, D c

G. F. BENNION.

POLLING-OVER MACHINE.

APPLIGATION FILED AUG. 2, 1912.

1,183,662)" Patented Ja11.5,1915.

4 SHEETSWSHEBT 3.

THE NORRIS PETERS C01. PHU7O LITHOH WASHING ION, D r:

G. F. BENNION,

PULLING-OVER MACHINE.

APPLIOATION FILED AUG. 3, 1912.

Patented Jan. 5, 1915.

4 SHEETSSHEET 4.

THE NORRIS PETERS C0,, PHOm-LITHQ. WASHINGTON. D C

NIED @IA Id UFFIQEQ CHARLES FAWOET'I BENNION, 0F LEICESTER, ENGLAND, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION 0E NEW JERSEY.

PULLING-OVER MACHINE.

Specification of Letters Patent.

Patented Jan. 5, 1915.

Application filed August 3, 1912. Serial No. 713,083.

To all 107mm it may concern Be it known that 1, CHARLES F. BENNION, a subject of the King of Great Britain, residing at Leicester, Leicestershire, England, have invented certain Improvements in Pulling-Over Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to pulling-over or like machines, and more particularly to that wellknown type of machine in which there are mechanically actuated toe and side grippers for pulling the upper respectively about the toe and sides of the last; and in which at a second stage of the cycle of operations, wipers and tack carriers follow up the grip pers and the upper is secured to the last by tacks driven from the carriers.

It is an object of the present invention to improve machines of this type whereby under certain conditions they may perform better work than heretofore, particularly in connection with boots and shoes in which the toe portions are raised considerably above the level of that portion of the forepart between the toe and the instep.

In the machine above" mentioned the timing of the parts is such that the toe gripper operates slightly in advance of the side grippers to pull the upper about the toe. In dealing with shoes that have raised toes and that consequently have a drop or dip just behind the toe it is found that with the grippers operating as heretofore there is difficulty in causing the side grippers to pull the upper tightly about the last at this drop or dip because the toe gripper strains the upper between the instep and the raised part of the toe so as to hold the material up from the dip.

It is an object of the present invention to overcome this difliculty and to this end a feature of the invention is in a pulling-over or like machine comprising toe and side grippers, operating mechanism for the grippers so arranged that the side grippers are operated to pull or stretch the upper transversely of the last prior to an operation of the toe gripper to pull or stretch it longitudinally of the last. Preferably. however, the toe gripper is operated to effect first a preliminary pull on the upper to position the sides of the upper correctly in relation to the side grippers, and it may be to draft the upper bodily forward on the last, and then after the side grippers have closed, to relax its pull on the upper either during or prior to the updraw motion of the side grippers, and next to exert a final pull on the upper to stretch it about the toe of the last.

Under some conditions the best results are obtained from a dwell or pause in the operation of the toe gripper while the side grippers pull, without relaxing the light tension with which the toe gripper initially pulls. As I am advised, this organization of gripper operating mechanism is new.

According to a further feature of the invention the toe gripper may be actuated so that an initial tension is applied to the upper by it and thereafter the side grippers are actuated to impart tension to the upper at the sides of the shoe while the toe gripper relaxes or after it has relaxed its tension somewhat, and this preliminary pulling and relaxing movement of the toe gripper and the updraw movement of the side grippers may be repeated automatically by the gripper-actuating devices as many times as is requisite to bring the upper well home on the last before the final pull is imparted to the toe gripper. Further, if considered desirable, between each of such repetitions the side grippers may be actuated to relax their pull, the amount of this relaxation being such as is considered will tend to seat the upper most quickly and smoothly to the outline of the last without straining it more than is desirable.

The invention will now be described as embodied in a machine of the type hereinbefore referred to but it is to be understood that the invention is not limited in its application to this particular machine nor is it limited to the constructions that are set forth herein by way of example since the invention could be applied to other machines and embodied in other constructions without departing from the spirit thereof.

In the accompanying drawings :-Figure 1 is a side elevation partly in section of so much of the mechanism as is concerned with the present invention; Fig. 2 shows the cam as in Fig. 3 but constructed according to the present invention; Fig. 3 shows the cam for actuating the toe gripper as constructed heretofore; Figs. 4 and 5 show the modified forms of toe gripper and side gripper upllll draw cams respectively shaped to effect repeated pulling by the side grippers, as well as by the toe grippers, with a relaxationof tension by the toe gripper each time the side gripper pulls; Fig. 6 represents a high toed last showing the upper pulled well down to the last as is done by the present construction; and Fig. 7 represents a last with a raised toe showing the upper pulled as it might be in the old machine.

In the construction about to be described the grippers and their actuating mechanism are substantially like those of the machine described in the specification of United States Letters Patent No. 1,029,387, granted June 11, 1912 to Ronald F. McFeely, except that the timing of the cams for the grippers is altered so that the side grippers will stretch the upper about the last after the toe gripper has eifected a preliminary pull upon the upper and has relaxed its pull again. These grippers comprise the toe pincers 10 and the side pincers 12 which which are suspended respectively from the front portions of

levers

11 and 13 fulcrumed at 15 and yieldingly connected at their rear ends to cams 16, 17 on the power driven shaft 18. In Fig. 3 is shown the cam 16 for actuating the toe gripper as previously constructed, while Fig. 2 shows the same cam in the present construction, in which latter case it will be noted that an additional raised portion A is provided on the cam groove. WVhen the machine starts, the gripper actuating roll is (as indicated by dot-and-dash lines) at the high portion of the cam marked B and as the cycle of operations progresses the roll is gradually moved toward the center of the cam until it reaches C thus giving the priliminary pull upon the toe gripper which is required. the roll next moves outward from the center until it reaches the highest point of the portionAwhen the toe gripper will be relaxed. The side grippers commence operating when the toe gripper roll reaches this point or as it is rising up the side D of the said portion and in the present instance it is preferred that they be operated at the latter time. As the cam continues to turn, the toe gripper roll will move down the side 1 of the portion A until it has once more stretched the upper and will then pause in the position indicated by the dot-and-dash lines at H to enable the upper to be adjusted. It will then start again and stretch the upper and it will continue to keep the upper stretched as it moves around the portion F of the cam, finally releasing the tension as it moves along the portion G to its original position. This formation of the updraw cam gives a give-and-take pull, that is, first a pull by the toe gripper, then a relaxation and a pull by the side grippers followed by a second pull by the toe grip-- per. Under some shoe manufacturing conditions, it is found that the relaxation is unnecessary and a dwell in the toe gripper cam groove may replace the raised portion A, followed by a decline corresponding to E to give an additional pull by the toe gripper after the side grippers have pulled. This arrangement stretches the upper longitudinally over the toe without bridging it over the instep or bowing the tip seam. Should it be desired to repeat the give-andtake pull of the toe gripper, the cam 16 would be provided with a series of rises such as A A, Fig. 4, one rise being provided for each relaxation of the tension of the toe gripper that is desired. Again if it is considered desirable, the tension on the side grippers may be relaxed while the toe gripper is pulling the upper, in which case the cam 17 which actuates the side grippers would be provided with a contour arranged to effect this motion, as in Fig. 5. This is a further development for repeating the giveand-take movement during a single cycle of the machine.

The improvement in methods of making shoes herein disclosed is not claimed in this application but is claimed in divisional application Serial No. 850,788, filed July 13, 1914.

Having fully described my invention, I claim as new and desire to secure by Letters Patent of the United States:

1. In a pulling-over machine, toe and side grippers, and connected mechanism for imparting longitudinal and transverse upper pulling movements respectively to the toe and the side grippers, said mechanism being so arranged that the side grippers are operated to pull or stretch the upper transversely of the last prior to an operation of the toe gripper to pull or stretch it longitudinally of the last.

2. In a pulling-over machine. toe and side grippers, and operating mechanism therefor arranged to cause the toe gripper to efiect a preliminary pull to position the upper and then to relax its pull upon the upper prior to the completion of the updraw movement of the side grippers.

{3. In a pulling-over machine, toe and side grippers and operating mechanism therefor arranged to cause the toe gripper to effect a preliminary pull to position the upper and then to relax its pull upon the upper and in which, for the purpose specified, the preliminary pulling and relaxing movement of the toe gripper and the updraw movement of the side grippers are automatically repeated.

4:. In a pulling-over machine, toe and side grippers. and operating mechanism therefor arranged to cause the toe gripper to eflect a preliminary pull to position the upper and then to relax its pull upon the upper and in which, for the purpose specified, the preliminary pulling and relaxing movement of the toe gripper and the updrawn movement of the side grippers are automatically repeated, and in which, furthermore, between each repetition the side grippers are actuated to relax their pull somewhat.

5. A pulling-over machine having, in combination, toe and side grippers, and operating mechanism therefor including updraw cams for the toe and the side grippers which are relatively formed and arranged to impart automatically to one of said grippers upper pulling movements in tWo separate steps.

6. A pulling-over machine having, in

combination, toe and side grippers, and opcrating mechanism therefor including updraw cams for the toe and the side grippers which are relatively formed and arranged to impart automatically to one of said grippers repeated upper pulling movements in the same direction during a single cycle and to relax the tension automatically between tWo of the successive pulling movements.

7. A pulling-over machine having, in combination, toe and side grippers, and operating mechanism therefor including updraw cams for the toe and the side grippers, the updraw cam for the toe gripper being formed and arranged relatively to the cam connectedwith the side grippers to raise the toe gripper first, then lower the toe gripper While the side grippers pull, and then again raise the toe gripper to a greater extent than at first.

8. A pulling-over machine having, in combination, toe and side grippers, and operating mechanism therefor including updraiv cams for the toe and side grippers, the updraw cam for the side grippers being formed and arranged automatically to raise and then loWer and finally to raise again the side grippers during a single cycle of the machine for repeatedly pullingthe upper engaged by the side grippers.

9. A pulling-over machine having, in combination. toe and side grippers, andoperating mechanism therefor including updraiv cams for the toe and the side grippers to stretch the upper longitudinally and transversely, said cams being formed and arranged to impart a give-and-take movement to the grippers, one gripper being actuated to relax the tension in one direo tion as the other applies or increases it in the other direction.

10. A pulling-over machine having, in combination, toe and side grippers, and operating mechanism therefor including updraW cams for the toe and the side grippers to stretch the upper longitudinally and transversely, said cams being formed and arranged to impart a give-and-take movement to the grippers repeatedly during the same cycle of the machine.

11. In a pulling-over machine, toe and side grippers. and connected mechanism for imparting longitudinal and transverse upper pulling movements to the toe and side grippers respectively, said mechanism being arranged to cause the toe gripper to effeet a preliminary pull to position the upper longitudinally and then to cease to pull further While said mechanism causes the side grippers to stretch the upper transversely of the last, said mechanism also including means to cause the toe gripper to effect an additional pull lengthwise of the shoe after the side grippers have pulled.

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

CHARLES F AWCETT BENNION.

Witnesses:

Fnnnsmo WILLIAM LITE, CLAUD BENNION.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.