US309674A - Nathaniel w - Google Patents

Description

/llllll1IllllIllllll/Mllll/IWMlll/lmnl'/ Patented Deo. 23, 1884.

N. W. WOODBRY.

SOLE SHAPING MACHINE.

QJ lmf' ujf/sigh (No Model.)

IIT/veiling lln'rrnn Smarts Parenti? time NATHANEL XV. VOODBURY, OF BEVERLY, ASSIGNOR TO SVAlN, FULLER Se C0., OF LYNN, MASSACHUSETTS.

SLlwSi'lAPING MACHENE.

DECIFICATION forming part of Letters Patent No. 309,67, dated December 23, 1884.

Application filed October 13, lSS. (No model.)

To all whom t may concern: d

Beit known that I, NATHANIEL W. Woon- YBURY, ol" Beverly, in the county ot'Essex and State of Massachusetts, have invented certain new and usefulImprovements inSole-Shaping Machines, oi' which the following is a specification.

My invention relates to improvements in machines in which shoesoles are shaped by 1o being placed on a last which is raised and forced against an upper form, and more particularly to improvements in the machine for shaping the soles oi" boots and shoes shown and described in Letters Patent No. 230,187, i5 granted to J. B. Johnson, July 20, 1880. In that machine the slide and its last are raised by a treadle,and arotary cam mounted on the cross-head of the toggles is then turned to clamp the sole 'lirmly between the lastand V2o the iixed forni.

One object of my invention is to dispense with the rotary cam and Vthe second 1novement necessitated thereby; and to this end my invention consists in a tumbler-cani arranged between the toggles and the slide or last-holder and operated by the treadle so as 1o raise the last and clamp the sole between ihe last and the form Another feature of my invention relates to 3c the toggle-operating device, and it consists in a grooved cam mounted loosely on a rotating shaft, the cam being caused to revolve at the proper time to shift the pin ol` the togglejoint by means of a clutch splined on the shalt and connected to a tri p-treadle, by means of which the clutch may be thrown into or out of connection with the cam, as desired.

In the Johnson machine above mentioned the toggles are operated by means ol" dogs 4o provided with a lever, by means ot' which they can be thrown into the path ot' a rcciprocating notched bar, the operation requiring an extra movement of the attendant.

In the accompanying drawings, which illusa5 trate a Johnson sole-shaping machine with my improvements embodied in the best way now known to me, Figure l is a front elevation showing the parts in two positions. Eig. 2 is a section on line a: a' of Fig. l, and lfig. 3

5o is a section on line 1/ y of Fig. 1.

A is the form. 3 is the slide or last-holder oint-pih d'Z ofthe toggles enters.

mounted on the cross-head Z), and adjustable vertically thereon by means of the screw b and the gears b2 b. D D are the toggle-levers. The upper one, D, carries a cross-head, d. rlhe lower one, D', is jointed to the frame at rl. A tumbler-cam, F, is jointed at one end to the cross-head d, and at its other end to a rod, It, connected to one end of the treadlelever II. The cross-head b rests on the up- 6o per surface of the cam F, and is raised or lowered by turning the cam F by means of the lever lrl and rod 71. After the last reaches the height to which it can be raised by the cam F, the toggles D D/ are brought into ac- 6 5 tion (to give the pressure requisite for setting the sole to shape) by throwing the clutch I, splined on the revolving shalt t, into connection with the cam t, having an oblique groove,

ft2, formed in it, and into which groove the 7o The clutch l is thrown by means of a bell-crank lever, one arm, t, ofwhich is connected to the clutch.

A treadle, i", is provided with a hooked arm,

t, the hook of which engages the other arm, i, ol' the bell-crank lever. On depressing the treadle i" its hooked arm will engage with the arm t" of the bell-crank lever and cause the clutch to connect with and revolve the cam F. The cam h, if constantly revolved, would im- 8o part a reciprocating motion to the joint-pin ofthe toggles; but as the pressure on the sole should continue l'or some time, the toggles must remain in their extended position during that time. liror this reason the hooked arm is thrown ol't from the arm ol" the bell-cranllever', immediatel y after the clutch engages with the cam, by means ofatripper, zl.,coming in contact with a stop, rlhe friction between the clutch and the cam is sufcient to 9o hold the clutch and cam together for half a revolution of the shaft r', during which the toggles are fully extended. As the shaft t' continues to revolve, the friction between the cam and clutch ceases iust as the joint-pin would commence to move in the opposite di rection. At this moment the clutch is thrown oft" from the cam by means of a spring, fi. rlhe cani now ceases to revolve and remains in position to open the toggles when the treadle fr" roo is again depressed. By arranging the treadles one above the other, as shown, the entire operation of raising` and forcing` the last against the form can be accomplished by one movenient of the foot. To separate the platens, the treadle i is first depressed to connect the clutch and cause the cam to make a half-revolution,and thereby relieve the pressure of theY toggles, and the cain F is then turned back by raising the treadle-lever H.

I claim as my inventionl. In a sole-shaping machine7 the combination, With the last-holder and the toggle-1evers, of an interposed tumbler-camand the actuating means, substantially as described.

2. In a sole-sha inf` machine the combina tion, with the joint-pin of the toggle-levers, of 15 NATHL. W. VOODBURY.

Witnesses:

J. E. MAYNADIER, J oHN R. SNOW.

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