US393503A - Isaie frechette - Google Patents

Description

(No Model.)

I. FREOHETTR LASTING MACHINE.

Patented Nov. 27, 1888.

UNITED STATES PATENT OFFICE.

IsAiE FREOHETTE, OF sT. HYAOINTHE, QUEBEC, CANADA.

LASTlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 393,503, dated November 27,1888.

Application filed April 21, 1888. Serial No. 271,492. (No model.)

To all whom it may concern:

Be it known that I, IsAr'E FREOHETTE, a citizen of Canada, residing at St. Hyacinthe, in the county of St. Hyacinthe and Province of Quebec, Canada, have invented certain new and useful Improvements in Lasting-Machines, of which the following is a specification.

My invention relates to improvements in boot or shoe making machinery.

It consists in adevicc which is arranged and designed for drawing and holding the edge of the uppers of boots or shoes over the insole in lasting the boot. It is attachable and may be easily attached to any of the pegging or tacking machines that are now generally used in boot or shoe making.

In the accompanying drawings, which illustrate my invention, Figure l is a general side View of the working parts of a machine provided with my lasting-machine. Fig. 2 is an enlarged side View; Fig. 3, a front view, and Fig. 4 a sectional elevation, of the lasting-machine detached.

To a lug, A, which is formed on the standards of pegging or tacking machines as now used, the knee B is secured. A stud-bolt, O, fixed in the upward-turned limb of this knee, projects through a slot in the vertical limb a of the cross-head D, which may thus be regulated in height and held in place by the nut 11. The cross-head D is chambered lengthwise to receive the shank E of a nipper, which has two upward-turned arms, 0. In the upper ends of the arms 0 there is pivoted a swinging jaw, F, the lower end of which may be pressed against the shoulder d of the nipper. A pin, G, passes through slots formed both in the arms 0 and in the shank of thejaw F, and these slots are all so shaped and directed that the raising of the pin G will throw the lower end of the jaw against the shoulder d, and lowering the pin will throw the jaw back. The ends of the pin G are held in the tines e of a fork, the handlef of which slides vertically through a guide-plate, 9, attached to an upper part of the machine. This forkis raised and lowered by means of the pin h of a crank, i, which is fixed on the main shaft H of the machine. This crank-pin circulates in the chamber of a hollow lug, I, which is secured to the fork-handlef' by the set-screws j. The

top and bottom surfaces of this lug chamber are circular, being cut to a radius equal to the distance from the center of the shaft H to the outside of the crank-pin h, so that the lug will remain stationary while the crank-pin is passing these parts, but will rise or fall with the crank-pin when the latter drops into either of the notches in the front and rear extremities of the chamber. These circular top and bottom surfaces are each described from center near the opposite side, so that the horizontal length of the chamber is greater than its height, and this difference,with the throw of the crank, gives the fork above described its requisite rise and fall. The lug and fork are raised by the upward movement of the crank-pin when engaged in the forward notch of the chamber, and descends with it when it has entered the rear notch. When the upper of a boot has been drawn over the last and its edges are to be tacked to the insole, the boot is under the machine, so that its edge is introduced between the open springjaw F and the shoulder d. The jaw is then closed by the rotation of the shaft H, and the edge of the upper is thus firmly gripped. The boot is then pressed toward the machine until it touches a gage-block, J, which is adjusted and held on the head D by the set screw 70. The pegging mechanism is then operated, the tack driven into its place through the upper into the insole, after which the jaw F lets go its hold on the upper and the boot moved forward for the next tack. The nailfunnel Z of the machine projects downward through the cross-head D and through a slot in the nipper, this slot being long enough to allow of the required endward play of the nipper, as above described. Acoil-spring, m, around the nipper-shank E holds it normally forward in the cross-head chamber, but allows it to recede when the boot is pressed back against the gage-block J. The pressure of this spring may be increased or diminished by the screw-plug nin the rear end of the extensioncbarnber 0.

It may be observed that the shoulder dand the under side of the nipper for a short distance back from the shoulder have their surfaces formed of a number of small sharp teeth, by which a strong hold is given on the edge of the upper. If these teeth are made suffi- IOU ciently sharp and the boot held firmly up to the nipper, the teeth will often be suffieient to hold the upper when lasting without the use of the swinging jaw.

Having thus described my invention, what I claim is- 1. In the above-described lastingmachine, the movable nipper shown, arranged to slide in the cross-head D, provided with the arms 0, in which is pivoted the swinging jaw F, substantially as shown and described.

2. In an attachment for lasting-machines, a fork having its handlef working in a suitable guide and its tines 6 attached to the pin G, which passes through slots in the arms 0 and through a curved slot in the shank of the spring swinging jaw F, substantially as shown and specified,

3. In an attachment for lasting-machines, the chambered ln g I, having an approximately oval-shaped interior, in which the pin h of the crank i on the main shaft H circulates, to cause the vertical movement of the fork, and there by operate the swinging jaw F, substantially as herein described, and for the purpose set forth.

4. The combination, with alasting-machine provided with a fixed upright tack-driving mechanism, of a frame for holding the upper while the same is being stretched over the last, said frame provided with the leather-nipping device and movable bodily in a horizontal direction with relation to said tack-driving mechanism, whereby the upper held in said frame may be tightened upon the last and the whole pushed laterally to the desired position beneath the tack-driving mechanism.

5. The combination, in a combined tacking and lasting device, of the knee 13, the movable nipper having the shoulder d, arms a, and swinging jaw F, pivoted in said arms, the chambered lug I, attached to a fork, by means of which the jaw F is operated, and the spring for holding the nipper forward, substantially as shown and described.

6. The combination, with alasting-machine provided with the fixed vertical tack-driving mechanism, of the frame provided with the leather-nipping devices to hold the edge of the upper, and movable horizontally in relation to said driving mechanism, and the adjustable stop whereby the upper held in said frame may be presented laterally a greater or less distance beyond the tack-driving mechanism.

7. In an attachment for lastingmachines, the horizontally movable nipper provided with the shoulder d and grasping-jaw F, said nipper constructed to hold the leather while the same is being stretched over the last and to permit it to be presented in the required position to receive the tacks.

Signed at Ottawa this 11th day of April, 1888.

IsAiiE FRECHETTE.

In presence of.

ART. CI-IARBONNEAU, N. G. SAVARD.

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