US1125094A - Pulling-over machine. - Google Patents

Description

F. HARRIS & A. BATES.

PULLING-OVER MACHINE.

APPLIGATION FILED NOV.29,1912.

Patented Jan. 19, 1915.

SSHEETS-SHEET 1.

THE NORRIS PETERS CO., PHOTO-LITHO.. WASHINGTON. D

F. HARRIS & A. BATES.

PULLING-OVER MACHINE. APPLICATION FILED NOV. 29, 1912.

Patented Jan. 19, 1915.

3 SHEETSSHEBT 2.

THE NORRIS PETERS CQ, PHOTO-LITHOH U/ASHINGI'ONv D. C.

F. HARRIS & A. BATES.

PULLING-OVER MACHINE.

APPLICATION FILED NOV. 29, 1912.

Patented Jan. 19, 1915.

3 SHEETS-SHEET 3.

.. WASHINGTON. D4 C f STAT A FTQ.

FRED HARRIS AND ARTHUR BATES, 0F LEICESTER, ENGLAND, ASSIGNORS TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF N EW JERSEY.

PULLING-OVER MACHINE.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed November 29;. 1912. Serial No. 734,159.

drawings indicating like parts in the several figures.

The present invention relates to pullingover or like machines and more particularly to the upper manipulating and securing mechanism therefor.

Heretofore it has been customary 1n pulling-over machines to secure the upper material at the toe by a single tack driven at a' certain distance from the edge of the tread face of the last. It has, however, been found that it would be advisable to secure the upper more firmly at the toe of the shoe since under some conditions which have been en-' countered the upper cannot at presentbe made to lie as snugly to the last and inner sole as is desirable, and since under some conditions the stress upon the upper is greater that a single appropriate tack is adapted to resist, and the upper is therefore liable to tear. Furthermore, with stiff upper material a single tack at the toe does not hold the upper securely enough to prevent the toe cap of the upper being displaced by swinging about the tack as a pivot when the first side of the toe cap is lasted. These objections hold good especially in the case of the toes of those shoes which are more than usually pointed, for with them there is a considerable amount of upper material to be plaited over owing to the small radius of the point of the toe. 7

It has been suggested that two tacks side by side should be driven very close together but it is obvious that there is a limit to the closeness of driving and any appreciable spread of the pulling-over holding tacks militates seriously against the satisfactory lasting of the toe and this is especially the case when the shoe is more than usually pointed. According therefore to one feature of the present invention this disadvantage is obviated by providing for a pulling-over or like machine fastener inserting devices so arranged that they insert a plurality of fasteners, each at a different distance from the adjacent part of the edge of the tread face of the last and all of which may or may not be approximately opposite the same part. Thus the stress upon the upper would be divided and the inturned portion of the upper would be secured to the innersole more'firmly than can be done at present.

Preferably two drivers will be used and they will be located one directly behind the other but if desired the second tack may be driven behind and somewhat to one side of the front tack.

It is preferable to insert the fasteners into the last at an angle to the plane of the shoe driven together, that they shall drive their respective tacks to the proper extent.

According to a further feature of the invention there is provided, in combination with gripper jaws and an operating bar for the jaws, an upper slitting knife having an operative connection with the gripper operatingbar. As shown two knives are'provided which are arranged to operate through slots cut in that gripper jaw that is adjacent to the drivers, and which are so mounted thatthe directionof their cutting movement shall be approximately perpendicular to the adjacent surface of the acting face of the said jaw and toward the other jaw.

In the construction hereinafter described each knife has projecting from it toward the drivers an abutment which is so constructed and proportioned that it is adapted to be struck by a cooperating abutment formed on a wiper mounted on the tack carrier, thesaid cooperating abutment acting as the wiper advances into operative position.

The wiper is arranged to yield outwardly in the tack carrier against a stiff spring which has a quick acting connection with the wiper, as. more fully explained in United States Letters Patent No. 988,582. provides that the knives shall not only be struck to force them against, and it may be through, the upper held by the grippers, but that thewiper abutment shall continue to press against the knives as the wiper yields backward. The tack. and wiper carrier, as it nears tack inserting position, operates a latch to unlock the pivoted gripper This jaw and allow it to disengage the upper whereupon the grippers are lifted from the shoe by their operating mechanism. The knives are not unlocked, however, but during this use of the grippers the wiper abutment continues to press upon the knives and thereby to hold them against the upper as the grippers and knives move up relatively to the upper. Thereby is obtained an operation which, in case the knives have not fully cut through the upper when they were struck, will eflect a drawing out to slit the upper as the knives and grippers pull off from it. A roller carried on the gripper actuating slide is arranged to engage arms projecting from each of the knives in order to hold the knives normally in retracted position ready to be actuated to slit the upper upon each forward movement of the actuating abutment. Preferably the knives will be arranged in relation to the gripper so that they operate to slit the upper upon either side of the position where the tacks are to be driven.

These and other features of the invention, including certain combinations of parts and more important details of construction, will be more fully understood from the detailed description considered with the drawings and will be pointed out in the claims.

One embodiment of the invention will now be described with reference to the accompanying drawings, but it is to be understood that the construction of parts and their arrangement may be considerably varied without departing from the spirit of the invention.

In the drawings :-Figure 1 is a side elevation, partly in section, of the toe portion of a common "form of pulling-over machine with the invention applied thereto; Fig. 2 is a View of the parts shown in Fig. 1 observed in the direction of the arrow in Fig. 1; Figs. 8 and 4: are details of the tack holding pockets; Fig. 5 is a detail of the means for attaching the drivers to the driver bar; Fig. 6 shows the parts illustrated in Fig. 1 at the time that the grippers and the knives are pulling oil from the upper; and Fig. 7 shows the work after the action of the machine upon it.

The driver bar 1 is actuated in its rising and falling movements by any convenient or usual means. It is guided laterally by means of flanges 2, 3 projecting from the driver bar casing 4:, these being sufiiciently long to permit the driver bar to swing toward and from the pincers. The lower end of the driver bar has an offset portion 5 which is split and provided with guideways for two drivers 6, 7 which project angularly toward the pincers and which are clamped therein by means of a bolt 8 and nut 9, Fig. 5. This bolt carries rollers 10, 12 that as the driver bar rises and falls are adapted to move in cam slots (one of which is shown at 13, Fig. 1) formed in the driver bar casing 4, the arrangement being such that the rollers and cam slots guide the driver bar angularly toward the pincers as it descends in a direction corresponding with the angular direction of the drivers. In this particular construction the drivers are arranged in the offset portion 5, one directly behind the other and are adjusted as to length by means of the nut 9 so that although they lie at an angle to the surface of the work yet their lower ends are approximately parallel therewith, this being necessary to enable them to drive the tacks equally.

Pivoted between lugs 15 projecting from the driver bar casing 4 is an oscillating tack guide 16 which may be constructed and arranged in any convenient manner so as to deliver tacks from the tack tubes 17 to the tack carrier. Instead, however, of having only one tack tube the tack guide 16 is provided with two tubes (as shown by dotted lines in Fig. 2) arranged to place the tacks in position beneath the two drivers. The tack guide 16 is held in normal position by means of a spring-pressed plunger 18.

If it is found inconvenient to place the tack guide as shown in the drawings it may be located in any preferred position and may lie at any convenient angle so as to be adapted to guide tacks from duplicate tack tubes to the tack carrier.

By these means two tacks may be driven into the shoe tandem-wise or one behind the other, but as already noted if it is desired the back tack may be driven behind and to one side of the front one.

Behind the drivers the gripper member 20 is arranged, the jaw 21 next the drivers being pivoted at 22 and actuated by the slide 24: and operating bar 11, Fig. 6, to grip the upper in the usual manner. This jaw, however, instead of being solid as is usual is provided with two slots in which parallel knives (one of which is shown at 25) are adapted to operate, the slots being so arranged that the knives will slit the upper on either side of the position in which the tacks are about to be driven to form a tongue to receive the fastening tacks as shown in Fig. 7. These knives are pivoted upon. the same pivot 22 as the pincer jaw 21 so that in operating they move in exactly the same manner as the jaw itself and in a. curve of equal radius, and are raised with the jaws by force transmitted through the slide 24: and operating bar 11.

The knives are normally held in inoperative position by means of a roller mounted on the pincer jaw actuating slide 24, the said roller acting, when the slide is lowered, to swing the knives outwardly about their pivot 22 by contacting with projections (one of which is indicated at 26) formed on the said knives.

\Vhen the slide 24 is raised, the roller 23 is drawn up out of the path of movement of the projections 26 and then operates to close the jaw 21 by pressing on an arm 27 formed on the said jaw, leaving the knives free. Projecting from the back of each knife is an abutment 28 which is struck by a cooperating abutment 29 formed on a wiper 30 mounted in any convenient or usual manner with its inner end yieldingly pressed downwardly and inwardly by the roll 32. The abutments 28 on the knives 25 are adapted to be struck by the wiper 30 as the tacking member moves inwardly to wipe over the upper and secure it to the insole.

When the upper is placed between the pincer jaws, the knives are held in their backward or inoperative position by the roller 23 pressing on the projections 26. The gripper then operates on the upper in the usual manner and the knives are freed and rest lightly on the upper. Next the tacking member advances in the usual manner to place the tacks in correct driving position and in so doing the abutment 29 strikes the abutments 28-upon the back of the knives 25 and causes them to move forward to slit the pulled over upper; after this the drivers descend to drive the nails tandem-wise and so force the upper down close against the innersole. The gripper jaw operating mechanism is essentially like that fully shown and described in United States Letters Patent No. 1,030,264, wherein it is explained that the engagement of the tack carrier with the latch 204 unlocks the pivoted jaw from its actuating slide to free the upper and allow the gripper to rise from the shoe. In accordance with this invention the abutment 29, by its connection with the spring acting on roll 32, holds the knives 25 pressed against the upper that is within the jaws in case the knives do not cut through the upper when they are first struck by the abutment. Then the jaw 21 is released from the upper and is pulled up but the knives 25 are continued under pressure, see Fig. 6, while the grippers and knives begin to rise whereby the knives complete the slitting of the upper by a drawing out. By this means a knife acts first by pressure and then, by being drawn across the stock which is to be slit, to efiect a slicing cut.

The construction of the tack pockets 35, 36 is shown more particularly in Figs. 3 and 4. They are so arranged that the two tacks are held at the same distance from the work in position to be forced into the stock when the drivers descend. The passage 37 through which the driver 7 passes is normally kept closed by two plungers 38 pressed together by light leaf springs 39 and provided with tapering groovescut in their adjacent ends.

When the driver 7 descends to drive-a tack the plungers 38 are separated against the action of the leaf springs 39. to permit the tack to enter the stock.

Fig. 3 illustrates the construction of the tack pocket 36 which cooperateswith the driver 6. Pivoted to fixed studs 40 are two depending arms 42 pressed together by leaf springs to normally close the driver passage l3 and provided with tapering grooves in a similar manner to the plungers 38. These grooves form a yielding pocket for thetack and hold it until it is forced through them by the driver 6 as it descends to fasten the upper.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent of the United States is 1. A machine of the class described having, in combination, pulling-over means and fastening inserting devices arranged to in' sert in the same portion of the shoe bottom a group of adjacent fastenings each at a different distance from the adjacent part of the edge of the shoe bottom.

2. A machine of the class described having, in combination, pulling-over means and fastening inserting devices arranged to insert a group of fastenings arranged in a line extending along the shoe bottom approximately. perpendicular to the adjacent portion of the edge face of the shoe.

3. A machine of the class described having, in combination, an upper pulling grip-- per and a plurality of tack driving devices so arranged that two tacks may be driven tandem-wise, or one behind or closer to the edge than the other, through the upper pulled by the gripper.

4. A machine of the class described having, in combination, pulling-over means and fastening inserting means arranged to insert a plurality of fastenings one behind or closer to the shoe edge than the other and with their points inclined toward the middle of the last and with their heads at approximately the same height from the tread face of the last. 1

5. A machine of the class described having, in combination, pulling-over means and fastening inserting means including a driver bar provided with two driverswhich are arranged one behind the otherand which project angularly toward the pulling-over means andhave their lower ends in a plane approximately parallel with the tack receiving surface of the work, means for supplying tacks to the drivers and mechanism for actuating the pulling-over means and the drivers.

6. A machine of the class described having, in combination, pulling-over means and fastening inserting means-including a driver bar mounted to swing toward and from the p llin -e e m an an p o ided w h rollers, and a guide for the bar having cam slots to receive the rollers and arranged to guide the bar angularly toward the pulling-over means as it descends and reversely as it rises.

7. A machine of the class described having, in combination, pulling-over means and fastening inserting means including two drivers arranged one behind the other, a tack holder having two tack pockets arranged one behind the other with separate means for closing the passages through the pockets; and operating mechanism for the pullingover means, the drivers and the tack holder substantially as described.

8. A machine of the class described having, in combination, fastening inserting means, pulling-over means comprising a gripper having a slotted jaw adjacent to the inserting means, a knife which is mounted between the gripper and the inserting means to operate through the slotted jaw, and operating mechanism for the gripper and for the inserting means including devices for causing the knife to be actuated by a movement of the inserting means.

9. A machine of the class described having, in combination, fastening inserting means including a wiper to lay the pulled over upper into position to be fastened, pulling-over means comprising a gripper having a slotted jaw adjacent to the inserting means, a knife which is mounted between the gripper and the inserting means to operate through the slotted aw, and operating mechanism for said parts including a connection extending from the knife into the path of the wiper for pressing the knife in the direction to cut through the upper as the wiper advances.

10. A machine of the class described having, in combination, fastening inserting means, pulling-over means comprising a gripper, a knife to slit the upper operated upon by the gripper, mechanism to operate the gripper and the inserting means and to cause the knife to make its cutting stroke, and operative connections from a moving part of the gripper to the knife to retract the knife when the gripper is opened.

11. A machine of the class described having, in combination, fastening inserting means, pulling-over means comprising a gripper, two knives arranged to separate a portion of the stock held by the gripper from the stock at either lateral side of the gripper to form a tongue substantially as described, and mechanism to operate the grip per and operate both of said knives simultaneously to form the tongue and to cause the inserting means to drive a fastener through said tongue into the shoe bottom.

12. A machine of the class described having, in combination, fastening inserting means, pulling-over means comprising a nieaoee gripper having a pivoted jaw, a-knife pivoted on the same pivot as said jaw, means for swinging the jaw open and retracting the knife, and separate means for closing the jaw and for actuating the knife to slit the upper held by the gripper prior to the insertion of a fastening.

13. A machine of the class described having, in combination, pulling-over means ineluding a toe gripper, means to insert a fastening to attach the stock engaged by the toe gripper to the shoe innersole, and means operating automatically during a single cycle of the machine to form in the stock on each side of the fastening a slit extending from the edge of the upper stock toward the edge of the shoe bottom to facilitate plaiting the stock from either side of the fastening over the fastened portion of stock in lasting the shoe toe.

14. A machine of the class described having, in combination, mechanisms to pull an upper and to fasten its margin at points isolated from one another and means operating automatically to slit the margin of the upper on both lateral sides of a fastening point to form a fastened tongue from which the edges of the adjacent portions of the margin of upper are free for subsequent manipulation;

15. A machine of the class described having, in combination, mechanisms to pull an upper and to fasten its margin, and means to slit the upper acting first by direct pressure of the slitting device against but not through the upper and then by a drawing movement of said device in a direction substantially lengthwise of its cutting edge in the presence of pressure acting to force the device into the stock engaged by it and progressively through the stock during such drawing movement.

16. A machine of the class described having, in combination, a gripper, means to operate the gripper to seize an upper, pull and hold the upper under tension and to withdraw the gripper from holding position when it has released the upper, a tacker, means to operate the tacker to effect release of the gripper from the upper and then to insert a tack to fasten the pulled upper, and a slitting knife mounted on the gripper and arranged to be thrust against the upper by the tacker as the tacker comes into gripper releasing position and to be held against the upper to effect a drawing out as the gripper begins to withdraw from upper holding position.

17 A machine of the class described hav ing, in combination, a gripper, means to operate the gripper to seize an upper, pull and hold the upper under tension and to withdraw the gripper from holding position when it has released the upper, a knife connected to the gripper, and operating means arranged to press the knife against the upper and to hold it thereagainst while the gripper begins to Withdraw whereby to effect slitting of the upper by a drawing out during the withdrawal of the gripper.

18. In a machine of the class described, the combination with gripper jaws and an operating bar therefor, of an upper slitting knife and an operative connection from the bar to the knife.

19. A machine of the class described having, in combination, means for laying a portion of upper material down upon an innersole in position to be fastened, means for fastening said portion of upper material, and means to form two slits in a single cycle of the machine, said slits extending at each side of the fastening from the edge of the upper stock toward the edge of the shoe bottom to prepare the shoe for subsequent plaiting of the stock from either side of the fastening over upon the fastened portilpn of stock in the operation of lasting the s 0e.

20. A machine of the class described having, in combination, means for laying a portion of upper material down upon an innersole in position to be fastened, and fastening inserting means arranged to drive two tacks one behind or closer to the shoe edge than the other and with their stems inclined downwardly and inwardly away from the shoe edge and leave the driven tacks with the head of each in substantially the same relation to the plane of the surface of the Work.

21. A machine of the class described having, in combination, means for shaping an upper over the middle of the end of a last preparatory to the operation of lasting it over the sides of the last end and means constructed and arranged for inserting fastenings into the shaped upper at said middle of the last end at two adjacent points located relatively to prevent the end portion of the upper from being displaced by swinging on either of the fastenings as a pivot when the first side of said end portion of the upper is lasted.

22. A machine of the class described having, in combination, devices for pulling an upper and fastening it under tension, the fastening devices being constructed and organized to drive two tacks substantially in line with the direction of strain and in such relation to one another as to share the strain of the same tensioned portion of the upper and thereby reduce the liability of the upper tearing in response to the strain.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

FRED HARRIS. ARTHUR BATES. Witnesses:

FREDERICK WILLIAM WORTH, FRED RroKs.

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

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