US1541862A - Lasting machine - Google Patents

Description

June 16, 1925. 1,541,862

R H. SILVESTER LASTING MACHINE Filed Dec, 1, 1921 2 Sheets-Sheet 1 /6 Fig. 1. M

Junelfi, 1925. 1,641,862 R. H. SILVESTEZR LASTING MACHINE Filed Dec. 1, 1921 2 Sheets- Shet 2 y i Q) Patented June 16, 1925.

UNITED STATES PATENT OFFICE.

nonnn'r HENRY sILvEsTER, or LEICESTER, ENGLAND, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PETERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

LASTING MACHINE.

Application filed December To all whom it may concern:

Be it known that I, ROBERT H. SILVESTER, a subject of the King of England, residing at Leicester, Leicestershire, England, have invented certain Improvements in Lasting Machines, of which the following description, in connection withthe accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for working uppers over lasts. The invention is herein shown and described as applied to a hand method lasting machine of the type disclosed in United States Letters Patent No. 584,744: granted June 15, 1897 upon application of Ladd and McFeely. It is to be understood, however, that the invention is not limited in its application to machines of this type. 1

The present invention is of special utility when applied to atype of hand method lasting inachine which is known as a twin tack lasting machine and embodies inventions disclosed in United States Letters Patent No. 1,007,051 granted October 31, 1911 on application of Arthur Bates, No. 1,245,659 granted November 6, 1917 on application of Bates and Caselton, and No. 1,360,442 granted November 30, 1920 on application of William Roberts.

In this machine the organization is such that for each operation of the gripper either one or two tacks may be inserted, and further such that whenever the plaiting movement is imparted to the gripper in lasting the toe end of a shoe a single tack is driven, and whenever the plaiting mechanism is employed in lasting the side or shank of a shoe two tacks will be driven for each pulling operation. In toe lasting it is important that the single tack driven be inserted directly behind the gripper, considered from the op erators position, and accordingly the machine has been so organized, the second tack driving mechanism, when in action, inserting its tack in a position offset from the gripper, that is, at one side of the gripper and, in fact, toward the operators left.

In the'use of a step-by-step lasting ma chine itis. preferable and usual to last each side of a shoe in a direction from the toe toward the heel. When a twin tack laster is used in this way the offset tack is at the 1, 1921. SerialNo. 519,141.

rear" of the gripper, relative to the direction in which the lasting operation is pro-, gressing, when lasting one side of the shoe and in advance of the gripper when lasting the other side of the shoe. In this latter case the disadvantage. arises that while the gripper tensions a portion of upper opposite one tack, a portion of upper in advance of the gripper is wiped over and secured by the second or advance tack without having been properly tensioned by the gripper.

Furthermore, when, as is frequently the ease, the plaiting motion of the gripper is employed in side lasting, for example, to take care of the fullness of the material at the sharply curved portion of the shoe between the shank and the ball, the oifset tack, when in advance of the gripper, as it'is at one side of the shoe, will be inserted outside I the plaiting sweep of the gripper and therefore in material outside the pulling range. Consequently, the offset tack secures material which is inadequately lasted and tends to prevent the next pull, which at this part of the shoe should be close to the preceding pull, from being applied as near to the preceding pull as the requirements of good lasting demand.

Objects of the present invention are to obviate these disadvantages. With these ob jects in view a feature of the'invention consists in an organization comprising a grip per and a plurality of tackers, means for effecting relative displacement of the tackers and gripper to cause the gripper to operate infront of either tacker. As herein shown, the tacking mechanism normally inserts one tack behind the gripper and another offset from the gripper, means under control of the operator being provided for effecting lateral displacement of the gripper to cause the gripper to operate in front of the tack previously oifset.

Preferably the tacking mechanism includes a wiper which has two tack pockets, the wiper moving over the shoe bottom to wipe in the upper and one or both of the tacks being driven to secure it. The gripper has a usual or normal position in front of the right-hand tack pocket and when shifted occupies a position in front of the left-hand tack pocket. The machine as shown has two edge gages, one being used at the sides of the shoe and the other exleft-hand tack is discontinued.

clusively at the ends of the shoe, and connectionsare provided from the end edge gage to the gripper to cause the gripper to be restored to normal position when the end edge gage is brought into operative position, and at the same time driving of the second or Shifting of the end edge gage out of operative position has no effect on the gripper shifting mechanism so that when the side gage is in use the operator has the choice of placing the gripper in either of its operative positions.

These and other features of the invention will appear more clearly from the following description when read in connection with the accompanying drawings and will be pointed out in the appended claims.

In the drawings,

Fig. 1 is a front view of a portion of the head of a hand method last-ing machine embodying the present invention;

Fig. 2 is a side elevation, partly in section, of mechanism shown in Fig. 1;

Fig. dis a plan view, partly in section, of the means for effecting lateral displacement of the gripper; and

Fig. 4 is a detail, in perspective and partly in section, of parts shown in Fig. 3.

In Figs. 1 and 2 of the drawings are shown characteristic mechanisms of the hand method machine including a sole rest 2, a thin edge rest 4 for use at the sides of a shoe. and a thick edge rest 6 for use at the ends of a shoe, said rest being movable into and out-of operative position by means of a lever 8 fulcrun'ied at 10 and having a handle 12 and inter-engaging connections at l t with a slide 16 on which the end rest 6 is carried. A combined tack block and wiper 18 is operated as usual to wipe in the lasted upper and is provided with two tack pockets with which two drivers 20, 22 co-operate (Fig. 1) to secure the wiped upper. A gripper 2st is operated as usual to close upon the upper, to updraw and to overdraw the seized portion. The gripper, at the will of the operator, may be given plaiting movements comprising lateral and turning or twisting movements by manipulating of a knee lever which acts through a rod 25 to change the position of a slide above or below the center of oscillation 28 of a rocker 30, which is operated by power of the machine to and fro in each *ycle. The slide 26 is pivoted at 31 to one end of av link 32 (Fig. the other end of which is pivoted to the lower end of a lever by pin 86, the inner end of which engages a block 37 guided for hori zontal movement in a groove 39 in the frame. The lever is fulcrumed between its ends at- 38, the construction being such that the lever v move relatively to the pivot 38 to permit ontal movement of the pin 36 in its lower end. At its upper end the lever is connected to a slide 40 from which the twisting movements of the gripper are derived in the usual manner.

The lateral movements of the gripper. which are employed with the twisting movements in plaiting the upper, are effected by 2 link 42 having universal joint connections at one end to a slide 44 by movement of which the gripper is swung laterally about a ball joint 4-13 at its upper end. In the construction embodying the present invention the other end of the link 42 has a universal joint connection 48 to a block 50 formed on or secured to a link member 56 which is guided in grooves 58 in the link 32. The portion of the link member which engages the grooves 58 is rounded to permit a limited up and down rocking movement of the member about the center of the block 50.

The other end of the member 56 has an inclined slot 60 which is guided upon an extension of the pin .36 by which the link 32 is pivoted to the lever 34;. The slot 60 is equal in length to twice the diameter of the pin 36 and a spring-pressed plunger (32 housed in the member 56 projects into the slot midway of its length to engage one side or the other of the pin 36 and so hold the slotted member 56 yieldingly in one or the other of its extreme positions. \Vhen the slotted member 56 is in its lower position it acts to hold the block from the pivot in the slot that the gripper 24 occupies its normal position, i. e., the pulling position which, from the operators point of view, is just in front of the driver 20, or in front of the right-hand tack inserting position. The inclination of the slot 60 is such that when the member 56 is raised to its upper position the block 50 is drawn to the left a distance sutlicient to cause the block 50, acting through the rod or link 42, to place the gripper in front of the driver 2 or the left-hand tack inserting position. The movement of the slotted member 56 is brought about by a depending link 6% which is pivotally connected at its upper end to the member 56 and at its lower end has a universal joint connection (ii-s, (57 to one arm 66 of a lever fast on a shaft 68 journaled in a bracket 70 fixed to the frame of the machine, the said shaft having a handle 72 extending within easy reach of the operator. A second arm 74: of this lever extends rearwardly and has an opening in its end through which extends the upper end of a thrust rod 76 the lower end of which has a ball and socket connection with the lever 8 which, as disclosed in Patent No. 1,245,655). controls the position of the thick or end edge and operation of one of the tack drivers subject to modification by the plaiting mechanism. This thrust rod 76 has on it a spherical shoulder 7 8 to engage a at such a distance 1,5a1,se2 3 cupped recess on the under surface of the arm 74 and the arrangement is such that when the edge gage controlling lever is in its rearwardposition and the end gage is out of action the operator may, by the handle 72, place the slotted member 56 in. either of its two positions. Should the member 56,'ho-wever, be in its raised position when the end gage is brought forward,

! the arm 74 will engage the spherical slioulder 78 and the thrust rod 76 will, by its connection with the edge gage controlling lever, be given a movement as the lever 8 is advanced which raises the spherical shoulder 78 and forcibly lifts the arm 74, thus, through the arm 66 and link 64, lowering the; slotted member 56 and returning the gripper 24 to What may be called for convenience its normal position, i. e., the position in which the gripper is directly in front of the right-hand tacking position or driver 20.

Mechanism for controlling the number of tacks to be inserted is provided which comprises a stop 80 arranged to arrest, when in hand tack driver bar 82 so that only the right-hand driver bar 84- and its driver 20 will be in operation. The stop 80 is moved into position to arrest the left-hand driver by moving the handle 12 forwardly, causing a cam 861:0 lift a push bar 88 and release the stop 80. Mechanism is, of course, provided to stop the feeding of tacks to the tack pocket beneath the driver 22 when it is prevented from operating. Preferably the machine is alsoorganized, as disclosed in Patent No. 1,245,659 above referred to, with interconnected mechanism between the drivers, ilaiting mechanism and gages to modify the action of the machine to meet conditions at different portions of the periphery of the shoe, namely the toe, the heel, the sides and the sharply curved portion between the shank and the ball. The organization is such that with the end gage in use, as at the toe and heel, one tack will be driven when the plaiting mechanism is in use as required at the toe, and two tacks when the plaiting mechanism is not in use as at the heel. With the side gage in use for side lasting, including the sharply curved portion, two tacks will be driven whether or not the plaiting mechanism is in use, thus permitting its use at the sharp curve between the shank and ball. WVith this organization, combined with mechanism as described for shifting the gripper, the operator may place the gripper in front of either tacking position when, with the side gage in use, heis insert ingtwo tacks at each pull whether or not the plaiting mechanism is put into action. If,however, the end edge gage 6 is in operative position, a condition which prevails only when operating at the toe and, heel, the gripperis necessarily in the customary or normal right-hand position in relation to the tacking positions so that the single tack which is inserted if the plaiting mechanism is rendered active, as when working at the toe end of the shoe, is the customary or right-hand one of the two tacks. Thus, without sacrifice of any of the utility of the machine as previously organized, the present invention enables the operator to drive two tacks while lasting either side of the shoe in either direction, to employ the plaitingmechanism when necessary, and to locate the gripper in front of that one of the two tacks which is in advance with respect to the direction selected for performing the lasting operation.

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

l. Ina machine of the class described, means for inserting a plurality of tacks, a gripper, and means for locating the gripper in front of the point of insertion of either tack. l

2. In a lasting machine, a gripper operating to tension successive portions of the upper of a shoe progressively, meansfor inserting a plurality of tacks for each operation of the gripper, and means for shifting the gripper and tack inserting means relatively to cause the gripper to produce the greatest tension on the portion of upper which is to be secured by any one of the tacks.

3. In a machine for working an upper over a shoe bottom, a wiper arranged for movement to wipe a portion of the upper over the shoe bottom, a plurality of tackers associated with the wiper to secure the wiped upper, a gripper arranged to tension a portion of upper in front of one of the tackers, and means for shifting the gripper to cause it to take hold of the stock in front of another tacker.

4. In a machine of the class described, the combination of a wiper, means for inserting a plurality of tacks through the wiper, a gripper, means for initially locating the gripper in front of the point of insertion of either tack, and means for operating the gripper in either position to tension the upper prior to operation of the wiping and tacking means.

5. In a lasting machine, a gripper operat ing to tension successive portions of the upper of a shoe progressively in either direction, means for inserting a plurality of tacks in each operation of the gripper, and means for initially locating the gripper in front of the tack which is in advance with respect to the direction along'the shoe edge in which the lasting is progressing.

6. In a machine for working an upper over a shoe bottom, a wiperarranged to wipe a portion of upper over the shoe hot tom, a plurality of tackers associated with the wiper to secure the wiped upper, a gripper arranged for updraw and overdraw movement and normally positioned to tension a portion of upper in front of one of the tackers, and means under control of the operator for shifting the gripper to initial position in front of another tacker.

7. In a lasting machine, a gripper operating to teimion.successive portions of the up per of a shoe progressively, a wiper operating to lay each portion of the upper over the shoe bottom and having a plurality of tack pockets, means for inserting tacks from the tack pockets through the wiped over portion of the upper, and means for shift ing the gripper transversely of the path of movement of the wiper to cause it initially to seize that portion of upper which is in the line of movement of either tack pocket of the wiper.

8. In a machine for working an upper over a shoe bottom, a wiper having a plurality of tack pockets and arranged for reciprocation to wipe a portion of the upper over the shoe bottom, a plurality of drivers associated with the tack pockets to secure the wiped upper, a gripper arranged to tension a portion of upper in front of one of the tack pockets, and means for shifting the grip per to a position in front of another tack pocket.

9. In a machine for lasting successive portions of an upper step by step, a gripper, means for inserting two tacks for each operation of the gripper, and means for shift ing the gripper to position it initially in front of either point of tack insertion so that whether the lasting operation is progressing in one direction or the other along the periphery of the shoe both tacks will be in serted in a portion of the upper which was within the range of the gripper and has been properly worked into lasted position.

10. In a machine for lasting successive portions of an upper step by step, a gripper, means for imparting plaiting movements to the gripper, means for inserting two tacks for each operation of the gripper, and means for shifting the gripper to position it initally in front of either point .of tack insertion so that whether the lasting operation is progressing in one direction or the other along the periphery of the shoe both tacks will be inserted in a portion of the upper which was within the plaiting range of the gripper and has been properly worked into lasted position.

11. A machine of the class described having, in combination, a wiper, means for inserting one or more tacks through the wiper, a gripper for tensioning the upper to be wiped, means for locating the gripper in front of the point of insertion of either tack, a gage movable into and out of operative position and adapted for use in lasting the end of the shoe, and means acting automatically when the gage is shifted to operative position to suspend action of all but one of the inserting means and .to insure that the gripper will be in front of the single tack then being driven.

12. In .a machine of the class described, the combination with a gripper, means for imparting upper tensioning and plating movements to the gripper, an end gage and a side gage arranged for alternative use at the ends and sides of a shoe respectively, and means for inserting one or a plurality of tacks, of means for locating the gripper initially in front of either point of tack insertion, means for ensuring that the gripper will be located in front of a givenone of the tacking positions when the end gage is in use, and means for suspendinginsertion of another tack in case the plaiting mechanism is also in use.

13. A machine of the class described hav ing, in con'ibination, a wiper, a pair of drivers, a gripper, means for locating the gripper in front of either driver, an end gage movable into and out of operative position, and means acting automatically when the gage is shifted to operative position to suspend action of one of the drivers and to ensure that the gripper will be in front of the other driver.

14. In a machine of the class described, the combination with a gripper, means for imparting at will plaiting movements to the gripper, a pair of gages arranged for alternative use at the ends and sides of a shoe respectively, and means for inserting one tack or two laterally spaced tacks, of meags for shifting the gripper in front of the point of insertion of either tack, automatic means for ensuring that the gripper will be located in front, of the right-hand point of. tack insertion when the end gage is in use, and means for suspending insertion of the lefthand tack in case the plaiting mechanism is brought into action.

15. In a machine of the class described, the combination of a gripper, means for imparting at will plaiting movements to the gripper including a link, and means manually movable without the use of tools for changing the effective length of the link between two limits to vary the initial lateral position of the gripper.

16. In a machine of the class described, the combination of a gripper, power means for imparting lateral movements to the gripper, and means for varying at will while the machine is in operation the initial lateral position of. the gripper when it grips the stock.

17. In a machine of the class described, the combination of a gripper, means including a link for imparting lateral movements Ill) to the gripper, and means under control of [he operator and operable by a single movement for varying the elfective length of said link.

18. In a machine of the class described, the combination of a gripper, power operated connections for imparting lateral movement to the gripper, and a handle operable by a single movement to shift said connections and thereby vary the initial lateral position of the gripper when it grips the stock.

19. In a machine of the class described, the combination of a gripper, actuating and 15 actuated elements for imparting lateral movements to the gripper, a yielding connection between said elements, and a shifter for relatively moving said elements against said yielding connection to vary the initial lateral position of the gripper.

20. In a machine of the class described, the combination of a gripper, operating means therefor comprising actuating and actuated elements having pin and inclined slot connections, yielding means for holding the pin at either end of the slot, and means for relatively shifting the pin and slot.

In testimony whereof I have signed my name to this specification.

ROBERT HENRY SILVESTER.

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