US211506A - Improvement in lasting-machines - Google Patents

Description

3 Sh,eets--Sheet I.

O. W. GLIDDEN. Lasting-lvlaolline. No. 211,506. Patented Jan, 21, 1879.

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0. W. GLIDDEN. Lasting-Machine;

Patented Jan; 21,1879.

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UNITED STATES PATENT OEEIoE.

CHARLES W. GLIDDEN, OF LYNN, MASSACHUSETTS.

IMPROVEMENT IN LASTlNG-MACHINES.

Specification forming part of Letters Patent No. 211,506, dated January 21, 1879 application filed April 30, 1877.

To all whom it may concern:

Be it known that I, CHARLES W. GLIDDEN, of Lynn, in the county of Essex and State of -Massachusetts, have invented an Improveper and inner sole of a shoe previously lasted,

andthen removes thelast and shoe. The upper is held stationary by suitable dogs or upper-holding devices adapted to grasp its edge, and then the last and upper are pressed together until the upper is made to fit the last snugly, and then the jaws or lasting devices move toward the last and push or crowd the upper over the inner sole and last-bottom, while the upper is held by the upper-holding devices. WVhen the strain upon the upper is suflicient to lay it snugly in contact with the last, the dogs are made to automatically release it. The inner sole is shown as adapted to be placed in position upon the last by adjustable pins, which enter holes in the inner sole, and also in the bottom of the last.

Figure 1 represents, in side elevation, partof alasting-machine constructed in accordance with my invention, and Fig. 2 represents the part broken -away from Fig. 1. Fig. 3 represents a detail of the walking-beam to operate the sole-plate, and the pressers or downholds to force the last downward at its fore and rear part, or move the last-bottom and side lasting devices vertically with relation to each other during the time that the upper held by the holding devices is being drawn or fitted to the last; Fig. 4, a view of one form of plate and upper-holding devices to hold the upper at its edges; Fig. 5, a longitudinal section through the last and heel and toe lasting devices Fig. 6, a top view of the lasting devices, showing the s1delasting jaws and heel and toe lasting jaws closed about the last; Fig. 7,

a detail of the rotating ratchet-wheel to intermittingly operate the main shaft of the machine; Fig. 8, a detail of an upper-holding dog and a yielding spring to permit the dog to release the upper at the proper time. Fig. 9 represents a modified form of side and shank lasting devices, it showing a series of adjustable fingers to crowd the upper over the last at the side and at the shank; and Fig. 10, a detail of the lower end of the rod to which the last-holdin g pin-is pivoted.

The main shaft a, mounted in the frame I), of any suitable construction, has an attached arm, 0, provided with a pawl, d, which is acted upon to drive the shaft to at the proper times by a shoulder, 70 of a ratchet-wheel, f, placed loosely upon the shaft, but driven at all times positively by a pinion, g, on a shaft, h, provided with a fast and loose pulley of ordinary construction. This pawl is disengaged at each revolution of the shaft a by means of a pawllifter, t, that, striking the short end of the pawl, moves it out of engagement from notch 70, and against the pressure of the spring 6 This pawl-lifter i is attached to a rod, j extended through a bearing, j, the rod being connected by a link, with a shipper, j, the latter and the link being shown in dotted lines, Fig. 1. A spring, j moves the rod j toward the wheel f.

The pawl-lifter may, when desired, be moved laterally from contact with the pawl, and then. the pawl will rise under the action of the spring i and the wheel will again engage it and move the shaft.

The shaft a has two disks, 1,- but they might be cranks or eccentrics, connected by links on with rods n, attached at their upper ends with the opposite ends of a walking-beam, 0, provided at or near its center with adjustable boxes 1), containing the pivots o of pressers or downholds q q, having within them, as therein shown, sliding rods 1 s, which, at their lower ends, carry a sole-plate, t.

The rods 1 s are held within the pressers q q with sufficient friction to prevent them from descending unless moved positively.

The lower ends of the rods extend sufficiently far through holes in the sole-plate to permit the inner sole to be impaled upon the ends 19 20 of such 'rods, they constituting pins to hold the inner sole.

It is obvious that the inner-sole-holding pins might be made as part of and so as to project from the under side of the sole-plate. When an inner sole is placed upon these pins the sole-plate is drawn down by hand until the ends of the rods enter holes 2 3 in, preferably, metallicf centering-blocks set in the lastbottom 00. (See Figs. 5 and 6.) The pins e11- tering such holes correctly place the inner sole upon the last, and hold it there until after the devices that push the upper overthe inner sole pass a little way over the edge of such inner sole. The block 3 is herein shown prolonged through the last, where it is provided with a hole to receive the last-pin d pivoted upon a supporting-rod, 0, having its pivot at The lower end of this rod, slotted to recieve the pivot f rests upon an india-rubber or other spring, f (see Fig. 10,) to permit the rod to descend a sufficient distance to insure the descent of the inner sole and last far enough to permit the lasting devices to pass over the edge of the inner sole. Inner soles vary in thickness, and this spring f 2 compensates for this variation. 7

The rod 6 has its pivot in a hanger, g, connected with a rotating head, h, pivoted on a vertical pivot, t, in this instance made hollow for the passage of one of the rods a. This head. carries at each end lasting devices of usual construction, to crowd the upper at the sides and shank and heel and toe of the shoe over upon the inner sole.

In Figs. 1 and 2 the jaws j are pivoted at 70 and connected at their lower ends by a toggle-lever, 1, having an elongated connecting-pin, 11.

The jaws j in Fig. 1 are provided with curved plates a ca to perform the side and shank lasting. Instead of these plates the jaws may be provided with a series of adjustable fingers, .72 as shown in Fig. 9, and fully described in another application made by me and filed concurrently with this, to which reference may be had. These fingers 00 will preferably be used. They are slotted, and bear upon the upper to crowd it over the edge of the inner sole. They are made adjustable vertically and horizontally, to adapt them to the varying curvature of the sole and last-bottom.

The toe and heel lasting devices are represented at 0 cl. They are composed each of two blades, one overlapping the other, and carried by pivoted arms. Each arm has a friction-roller, 4, which is struck by the upper ends of the jaws when they are closed. The side jaws in closing move the toe and heel lasting jaws to crimp the heel and toe of the upper over the last.

The toe-lastin g 'aws are pivotedat (1 upon a rest-plate, c, adjustably connected with the base f by means of a screw, 9 and this base is made adjustable horizontally by means of a screw, a.

The heel-lasting jaws, pivoted at 7L4 upon a rest -plate, i, are adjustably connected by screws ktwith the base j, made adjustable on the frame h by means of suitable bolts 1) and screws 0 The adjustments of the heel and toe lasting jaws horizontally permit them to operate upon lasts of different length, and the adjustment between the rest-plates and their bases permits the jaws to adapt themselves to lasts of different curvature.

The block a is adj ustably, connected by screw l4=with an adjustable collar, 17, adapted to be raised or lowered by a screw, 15, in a part, 16, of the frame. This block a is so made adjustable that it may place the pivot p of the plate 0 in proper position with reference to the lasting devices. This plate 0 has upper-holding devices 5 6 7, made as levers or dogs, controlled by screws 8 or eccentrics or toggles, so as to engage the upper between their forked outer ends and the plate 0, and hold the upper at the toe and ball part of the vamp firmly, while the last is operated upon by the pressers at points each side of aline drawn transversely across the last, said pressers acting, the one, q, as a fore-part presser or downhold, it operating upon the last or inner sole at or near the toe thereof, and the one, q, as a back-part presser, it operating upon the last or inner sole at or near the heel ends thereof. These upper-holding devices are adapted to hold the upper with a certain amount of force, and then to yield and release the upper. In' this instance the screws rest against springpressed plates 18, held up by springs 1.9. (See Fig. 8.) The dogs are made adjustable horizontally in their brackets 24. by means of elongated slots therein. (See Fig.1.) This permits the dogs to be moved forward over the upper laid upon the plate 0, which is handier than to draw the upper under the ends of the dogs.

It'is obvious that the standards 24 might be made adjustable on the plates instead of moving the dogs in the slots of the standards.

The toe-seat of the toe-lasting device is lined with india-rubbcr, as at 21, to permit the last to descend the proper distance, notwithstandin g variations in the thickness of the uppers. The ratchet e, fixed to the side of the wheel f, if engaged with the long end of the pawl d, may be made to move the shaft to when its motion is to be reversed to turn the machine back.

In operation, the upper is grasped or seized by the upper-holdin g devices; the last is placed within the upper; the sole-plate, with an inner sole applied, is drawn down until the ends of the rods enter the holes in the blocks 2 3. In this position the toe of the last is ahead of the position it will occupy at the completion of the lasting operation, and the pressers q q are substantially vertical.

Now the machine is started. The walkingbeam 0 descends until the ends of the pressers or down-holders q q meet the sole-plate, and then the farther descent of the walking-beam and presser crowd the last down into the up perheld by the dogs. The pressers q q are independently adjustable laterally by means of the bolts m and vertically adjustable by moving the end portions 20 along the screwportion 1", which permits both the toe and heel or fore and back part of the last-bottom to be pressed to the proper level with relation to the movement of and hold such last in correct position for the operation of the jaws or fingers, which crowd, fit, or stretch the upper about the last and inner sole. As the last is pressed down it is crowded backward by its action against the upper, held by the upper-holding devices. The pressers turn on the pivots a; during this backward movement of the last and assume an inclined position. When the upper has been strained sutficiently to fit it closely to the last, the side and heel and toe lasting devices are made to approach the last and press the upper just over the edge of the inner sole. At this time, or later, the dogs may release the upper, according to the amount of strain to which it is desired to subject the material, this being governed by the quality of the material, its thickness, and the closeness of the lasting. Just as the lasting devices pass over the edge of the last, the sole-plate and pressers are raised from contact with the inner sole by the rising of the walking-beam, and then the lasting devices are completely closed.

The jaws j are closed by the action of a forked slide, m, lifted by a cam, a, on shaft to, the fork of the slide engaging the pin 11, and straightening the toggle I. When the solepressers are lifted and thejaws are closed, the rotation of the shaft is stopped by the paw lifter The bolt 4, connected with the lever s, is then withdrawn, unlocking the head h, so that it may be rotated to bring its opposite end in position under the walking-beam and sole-presser to receive another upper. The end of the head containing the jaws that hold the shoe-upper and inner sole just operated upon is, by the rotation of the head, brought to the opposite side of the pivot 45, or into the position shown in Fig. 2.

Referring to Fig. 2, it will be seen that the pin 11 of the toggle-joint stops under the hook 1'0, connectedwith the treadle 12, and held up by a spring, 22. A second operator at this end of the head secures the upper and inner sole by suitable fastenings, nails, or pegs, and then depresses the lever, causing the hook 10 to spring the toggle and permit the jaws to move away from the upper, so that the last may be removed and be withdrawn from the lasted shoe.

In this way one operator may fit the upper to the last, and then rotate the head for another operator to secure the upper and inner sole together and withdraw the last, leaving the jaws ready to again receive an upper and last within them. The upper is drawn about the toe very closely, the slight backward motion of the last away from the dog 5 assisting in this operation. The dogs will preferably release the upper just as the lasting devices begin to crowd the upper over the inner sole.

The toe and heel lasting devices are made longitudinally adjustable, to adapt them to lasts of different lengths, and in the arc of a circle, to adapt them to lasts of varying slope at heel and toe, substantially as in the American lasting-machine. The side jaws may be provided with india-rubber faces, as in the American lasting-machine.

Considerable pressure has to be exerted to properly crowd the last into the upper held by the upper-holdin g devices; and it is quite essential to the complete and perfect operation of the machine that each end of the walkin beam be operated positively, so as to place the last in proper position for the passage of the jaws or fingers over the last and inner sole. If the head should spring, the last-bottom would not be placed in correct position.

A walking-beam raised and lowered at one end only might be used but it would have to be made heavier than it operated at both ends, which would unnecessarily increase the weight of the beam and the power required to operate the machine.

The fore and back part pressers may operate directly upon the inner sole resting upon the last to place it in correct position, as described, and the sole-plate may be omitted.

The pressers move vertically toward and from the last-bottom, and press it at each end down upon the support for the last, the pressers and support co-operating to place the lastbottom, whatever may be its curvature, in proper relation with reference to the path of movement of the lasting devices.

It is obvious that the pressers would operate to place the last-bottom at a proper level in a machine in which the last was stationary and the lasting jaws or devices which operated upon the upper to fit it to the last had a rising and falling motion.

From the above description it will be ob- -served, at the commencement of the lasting operation, that the last-bottom occupies a position above the horizontal plane of movement of the side-lastin g devices; that the up per is grasped and held at its edges by upperholding devices placed substantially at the level of or just above the line of the hOllZOlltal or closing-in movement of the side-lastin g devices; and that the last and side-lasting devices are then so moved, one with relation to the other, vertically as to place the bottom of the last and inner sole thereon in a plane below the acting portions of the side-lasting devices, after which the said side-lasting devices are moved toward the center of and horizontally over the bottom of the last and inner sole, crowding the edges of the upper over upon the inner sole, the heel and toe lasting devices also crimping the heel and toe of the upper over upon the heel and toe ends of the inner sole.

I claim- 1. In a lasting-machine, upper-holding devices to engage and hold the edge of the upper, combined with side-lastin g devices, a last, and mechanism whereby the relative positions of the last-bottom and side-lasting devices are changed vertically while the upper is held by upper-engaging devices, to permit the sidelasting devices to lay the edges of the upper over upon the inner sole, substantially as described. Y

2. In a lasting-machine, upper-holding devices adapted to grasp the edges of the upper and to yield when subjected to a certain amount of strain, combined with a last and side-lasting devices and heel and toe lasting plates or slides adapted to be moved horizontally over the last-bottom substantially as described.

3. In a lasting'machine, upper-holdingdevices controlled as to their force by means of a spring, and adapted to engage and hold the edges of the upper and to yield at the proper time, combined witha last, side-lasting devices, and mechanism to change the relative position of the last-bottom and side-lastin g devices during the lasting operation and while the upper-engaging devices hold the upper, substantially as described.

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

CHARLES W. GLIDDEN. NV i tn esses:

G. W. GREGORY, S. B. KIDDER.

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