US254437A - Lasting-jack - Google Patents

Description

(No Model.)

G. W. HUTGHINS.

LASTING JACK.

No. 254,431. Patented Feb. 28,1882. l

INVENTOR fwwm ATTORNEYS.

Units STATES PATENT OFFIon.

GEORGE W. HUTGHINS, OF DOVER, NEW HAMPSHIRE.

LASTlNG-JACK.

SPECIFICATION forming part of LettersPatent No. 254,437, dated February 28, 1882,

i Application filed January 5,1882. -(No model.) i

To all whom it may concern Be it known that I, GEORGE W. HU'roHtNs, of Dover, in the county of Stratford and State of New Hampshire, have invented a new and useful Improvement in Lasting-Jacks, of which the following is a full, clear, and exact description. Q

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of my improvement. Fig. 2 is a front elevation of thesame. Fig. 3 is a sectional plan view of the same, taken through the broken line 00 00, Fig. 2.

The object of this invention is to facilitate the lasting of boots and shoes.

The invention consists in a lasting-jack con structed with a cam-frame having a spindle, a

bar swiveled to the spindle, a lever hinged to one end of the swiveled bar and a bar hinged to the other end of the said bar, a bar hinged to the frame and provided with a springpressed curved arm having prongs, and a spring and treadle; also, in the combination, with the supporting-frame and the treadle, of a hinged whereby the jack can be adjusted to receive lasts of different sizes; also, in the'combination, with the spindle, the hinged lever, and the hinged arm, of the swiveled bar having an arm provided with a bearing, whereby a firm and steady support is given to the said lever and arm; and, also, in the combination, with the swiveled bar provided with the projection, of the arm pivoted to the said bar and provided with the concaved head and the set-screw passing through a hole in the said lug, whereby the said arm can be adjusted 'to the size of the last, as will be hereinafter fully described.

Arepresents a frame or plate, one end of which fits against the edge of a shoe-bench or other suitable support, and has perforated lugs B formed upon it to receive the screws that fasten it to the said bench or support. The frame A is further supported by a plank or stud, O, placed beneath its forward middle cesses are curved, as shown in Fig. 3, to adapt the said edge to serve as a cam to guide the lower end of the lever D. The lever D is hinged to'the end of a curved bar, E, which'has a hub at its center to receive and work ;upon a spindle, F, formed upon or attached to the forward middle part of the frame A. The other end of the curved bar'E has an inwardly-projecting arm, E, formed upon it, which has a hole formed through its inner end to receive and work upon the upper part of the spindle F. The bar E is thus provided with two bearings to give it firmness and steadiness. To

the end of the bar E is hinged the lowerend of an arm, Gr, which has a concavedhead, H, formed upon its upper end to receive 'and support the forward end or toe of the last. The heel of the last is perforated'to receive'a pin, I, formed upon or attached to the upper end of the lever D. Into a screw-hole in the lower end of the lever D is screwed 'a set-screw, J, the forward end of which rests against the curved or cam edge oftheframe A, so that by turning the said set-screw J forward or back the lever D will be adjusted to receive large or. small lasts, as may be required. For the same purpose the arm Gcan be adjustedby a set-screw, K, which passes through a: screwhole in 9. lug, L, formed upon the end of the curved bar E, so that its forward end will rest against the said arm G, as shown in Fig. 2. g

M is a bar, called by me a laster, the lower end of which is inserted in a slot in the rear middle part of the frame A, and is pivoted to lugs formed upon the lower side of the said frame A. Several holes are formed in the lower end of the bar M to receive the pivotingbolt, so that the said bar M can be adjusted higher or lower, as the size of the last being used may require. The upper end of the bar M is forked, as shown in Fig. 2, and to the IOC ends of the branches thus formed is attached a rod or bolt, N, upon which is pivoted an arm, 0. The arm 0 also slides upon the bolt N to adjust itself in proper position upon the last. The forward part of the arm 0 is curved upward, as shown in Fig. 1, so thatit will readily slide upon the last when it is drawn forward.

In inclined grooves in the opposite sides of the arm 0 are placed small pointed bars, P, which are secured in place by keepers Q, fastened to the sides of the arm 0 by screws or bolts B, so that the said pointed bars or prongs P can be readily detached and sharpened, and can be moved forward when worn. Upon the upper side of the arm 0 is formed a projection, S, to serve as a handle, and upon the lower side of its rear end is formed alug, T, to which is attached the upper end of a spiral spring, U. The lower endof the spiral spring U is attached to the rear side of the bar M, so that the tension of the said spring will hold the forward part of the arm 0 pressed downward upon the last.

To the middle part of the bar M is attached the end of a spiral spring, V, the other end of which is attached to the rear part of the frame A or to the bench that supports the jack, so that the tension of the spring V will draw the bar M' back. Several holes are formed in the bar M to receive the end of the spring V, so that the said spring can be adjusted as may be required.

To a lug, W, formed upon the forward side of the upper part of the bar M, is hinged the upper end of a red, X, which passes down through the slot in the middle partof the frame A, and its lower end is attached to a treadle, Y. The rear end of the treadleY is hinged to a support, Z, attached to the floor, and its forward end projects into such a position that it can be readily reached and operated by the workman.

In using the jack the lever D, arm G, and bar M are adjusted according to the size of the last to be used. The upper of the shoe or boot is then arranged upon the last, and the last and upper are placed upon the upper ends of the lever D and arm G. The treadle Y is then operated to move the upper end of the bar M forward, causing the arm 0 to slide upon the last, when the prongs P take hold of the edge of the upper, draw it into place, and hold it until secured to the last. The bar E is then turned upon the spindle F, and the treadle Y is again operated to draw the edge of the upper into place, and so on until the entire edge of the upper has been secured to the last. During the lasting processthe foot of the leverD is held against the cam edge of the frame A, affording a firm positioning of thework, while the lasting-arm acts upon the irregular contour of all parts of the ed geof the bootor shoe upper.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A lasting-jack constructed substantially as herein shown and described, and consisting of the cam-frame A, having spindle F, the swiveled bar E, the hinged lever D, the hinged bar G, the hinged bar M, provided with the curved arm 0, having prongs P and spring U, the springV, and the treadle Y, as set forth.

2. In a lasting-jack, the combination, with the frame A and the treadle Y, of the hinged bar M, the curved arm 0, having prongs P and spring U, and the spring V, substantially as herein shown and described, whereby the upper can be drawn into place upon the last by operating the treadle, as set forth.

3. In a lasting-jack, the combination, with the frame A, having a cam edge, and the swiveled bar E, of the lever D, substantially as herein shown and described, whereby the last is guided as the swiveled bar is turned upon its pivot, as set forth.

4. In a lasting-jack, the combination, with the cam edge of the frame A and the lever D, of the set-screw J, substantially as herein shown and described, whereby the jack can be adjusted to receive lasts of different sizes, as set forth.

5. In a lasting-jack, the combination, with the spindle F, the lever D, and the arm G, of the swiveled bar E, having arm E, provided with a bearing, substantially as herein shown and described, whereby a firm and steady support is given to the said lever and arm, as set forth.

'6. In a lasting-jack, the combination, with tliejswiveled bar E, provided with the projection L, of the arm G, pivoted to the said bar and provided with the concave head H, and the set-screw K, passing through a hole in the said lug, substantially as and for the purpose set forth.

GEORGE W. HUTCHINS.

Witnesses:

GEORGE S. FALL, J OHN W. Foss.

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