US48394A - Improved gold-beating machine - Google Patents

Description

UNITED STATES PATENT OEPICE.Y

MATTHEvS7 HAsTINGs, or PHILADELPHIA, PENNSYLVANIA.

IMPROVED GOLD-SEATING MACHINE.

Specification forming part o f Letters Patent No. lI 8,394, dated June 27, 1865.

To all whom it may concern:

Be it known that I, MATTHEW HA'sTINes, of Philadelphia, Pennsylvania, have invented an Improved Gold-Beatin g Machine; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention consists, first, in the employment, for beatin g gold, of a vertically-guided hammer, which is raised and permitted to fall with uniform force by the mechanism hereinafter described, or the equivalent to the same; secondly, in certain devices, fully described hereinafter, for arresting the descent of the" hammer.,

In order to enable others skilled in the art to make and use; my invention, I will now proceed to' describe it construction and operation.

On referenccto the accompanying drawings,

which form apart of this specification, Figure 1 is a front elevation of my improved goldbeatingmachine; Fig. 2, a sectional elevation, and Fig. 3 a plan view.

Similarletters refer to similar parts throughout the several views.

To the base A of the machine are secured two side frames, B and B', which are connected together by the cross-pieces C, C', and C and the cross-stays D D.

To the base A', between the uprights B B', is secured an anvil,E,andin brackets attached to the cross-pieces C C slides a vertical rod, F, to the lower end of which'fis secured a hammer, a. Y

In brackets b attached to the side frames B turns a shaft, G, on which is a toothed wheel, c, the latter gearing into a similar wheel, c', on a shaft, a', which turns in the front end of a rock-frame, H, hung between the side frames B.

Adjacent to the wheel c on the shaft G is a cam,f, and on one end of the shaft is a flywheel, I, and on the other a driving-pulley, l.

Opposite the cam f on the shaft G is secured a cam,f, the cams f and f', during a part of the revolution, bearing simultaneously one against each side of the rod F.

To a' shaft, K, which turns in the side frames, B B', below7 the rock-frame H, arc secured the arms L and 0, the front end of the former,

when depressed, bearing against the inner side of the bar F, the opposite side of the said bar being in contact with a plate, q, which projects from the upper edge ofthe crosspiece C".

tend to depress the latter and maintain the l camf in contact with the rod F.

To the arm O of the shaft K is connected the, upper end of a rod, P, the lower end of the latter being jointed to the lever M between the pin e and the foot-plate 71.. v

`Motion is imparted to the shaft G, so that the latter and the shaft Gr shall rotate in the directions of the arrows, Fig. 2, the peripheries of the cams f being brought in contact with the rod F and raising the same from the anvil. The package technically termed the mold, which is composed of layers of goldbeaters7 skins and intervening sheets of gold," is then placed upon the face of the anvil E and held by the attendant, so that on the cams f turning away from the rod F the latter will descendand the hammer a be brought smartly on the top of the mold. As the cams revolve the rod F is raised and allowed to drop as before, the attendant moving the mold after each blow, so that it shall be struck by the hammer a in the same manner as when it is beaten by hand. When it is necessary to arrest the descent of the hammer the attendant must depress the outer end of the lever M with Vhis foot, when the rock-frame H will be raised and the cam f be removed from contact with the rod. At. the same time the arm L is brought against the rod, which is thus confined between the said arm and the plate g. On releasing the end of the lever M the weighti will restore the lattervand the parts connected with the same to their original positions.

Gare should be'taken to drive the machine at such a uniform speed that the rod F may be caught by the cams as the hammer rebounds from the mold, for, should the latter bestruck bythe 4hammer after it has rebounded from the same and before being again raised by the l cams, the inequality in the force of the blows will have a tendency to inj uriously shatter the gold.

Attempts have been heretofore made to beat gold by machinery, the ordinary tilt-hammer having been used, in all cases without success, owing, Ibelieve, to the springing of the shaft of the hammer when the blow is struck, and'to the consequent indirectness ofthe blow.

After many careful experimentslhave found that by the use of ahammer so carefully guided that it can fall perpendicularly Without any lateral spring and with uniform force on the mold the gold may be beaten as effectually as by hand, While the necessity of employing skilled mechanics is avoided.

I claim as my invention and desire to secure by Letters Patent-- 1. The employment, for beating gold7 of a verticallyguided hammer7 which is raised andpermitted to fall with uniform force by the mechanism herein described, or the equivalent to the same.

2. The shaft K, with its arm L, the rockframe H, and cam f', the Whole being arranged for joint action on the rod F substantially as and for the purpose herein set forth.

In testimony WhereofI have signed my name tothis specification in the presence of two subscribing Witnesses.

M. HASTINGS.

Vitnesses:

HENRY HoWsoN, JOHN WHITE.

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