US298869A - Stamp-mill - Google Patents

Description

(No Model.)

G. S. LONG.

STAMP MILL.

No. 298,869. Patented lVIay'ZU, 1884.

ilnrrnn Smarts Partnr amen.

GEORGE SHAV LONG, OF PETROLIA, PENNSYLVANIA.

PECIFICATION forming part of Letters Patent No. 298,869, dated May 20, 1884. Application filed September 7, 1883. (No model.)

To all whom t may concern:

Beit known that I, GEORGE S. Lone, a citizen ofthe United States, and a resident of Petrolia, in the county of Butler and State of Pennsylvania, have invented certain new and useful Improvements in Stamp-Mills; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had tothe accompanying drawings, which form a part of this specification, and in which Figure l is a vertical sectional view of my improved stamp-mill. Fig. 2 is a top view of the same with a portieri of the frame broken away. Fig. 3 is a perspective view of the stamp-operating cam; and Fig. 4c is a crosssection, on an enlarged scale, of one of the stampstems 'and its box on line x zr, Fig. l.

Similar letters of reference indicate corresponding parts in all the iigures.

My invention has relation to battery stampniills for crushing ore or similar minerals; and it consists in the improved construction and combination of parts of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the letter A indicates a circular trough in which the ore to be crushed is placed, and which supports with its central raised portion a bed-piece, B, form-v ing a vertical bearing, o, at its center for the reception of the lower end ofthe upright main or cambearing shaft E. This bed-piece is provided at its edges with two uprights, D, forming bearings or boxes m at their upper ends, in which the horizontal drive-shaft G is mounted, which is provided at one end with a pulley, M, by which it is connected to the driving-power by a belt or similar means, and said shaft is also provided inside one of the bearings m with a bevel-pinion, g. rlhe uprights D support a plate or casting, G, some distance above the bed or base piece, which casting forms an upright sleeve, N, at its center, through which the upright cam-bearing shaft passes and in which it turns. The upper end of the cam-bearing shaft is provided with a beveled cog-wheel, G, which meshes with the pinion upon the drive-shaft, from which it receives its motion, and the cam F is keyed or otherwise fastened upon the lower portion of the shaft. This cam onsists of a sleeve, a, from the lower end of which project three (or more or less) ilanges, t', from the ends of which project a corresponding number of triangular wings, o, parallel with the sleeve, forming an annular space, c, between them and the sleeve, having inclined edges d facing in the direction of the rotation of the shaft, and having vertical rear edges, d, between which and the point ofthe followinginclined edge are formedspaces c of sufficient width to allow laterally-projecting friction-rollers upon the stamp-stems to pass through them.

4The stampstems H are provided at their ripper portions with sleeves I, secured upon them, but in which they may turn, and with ratchets K at their upper ends, the said ratchets facing upward; and these sleeves, which by preference are square, slide in boxes O, formed in the upper casting, and preferably provided with anti-friction rollers 0 upon their inner sides, which boxes are lined with wood or similar material possessed of a certain amount of elasticity, combined with strength, for the purpose of cushioning the jar caused by the vertically-reciprocating stamps. The lower portions of the stamp-stems slide likewise in similar wood-lined boxes, O, in the base or bed plate, the two sets of boxes guiding the stamps in their up-anddown motion. A lug or bolt, J, projects inwardly from the lower end of each ofthe sleeves upon the stampstems, and is provided with an anti-friction roller, J next to the sleeve, which roller travels upon the inclined edges of the cam-wings and in the spaces between the wings upon the upanddown stroke when the cam is rotated. Another anti-friction roller, i, upon the inner end of said lug bears against the side of one of a number of vertical rods, w, of which there is one for each stamp, which depend from the upper casting, having their lower ends proj ceti-ng into the space between the cam-sleeve and the triangular cam-wings. These rods, which, as before said, correspond in number and position to the stamps, serve, together with the square shape of the sleeves upon the stamp-stems, to prevent the sleeves, and with them the lugs with the anti-friction rollers, from turning. The stamp-stems are turned a part of a revolution at every upstroke by a corresponding number of pawls, L, hinged to IOO the upper end of the central upright sleeve, and engaging at every upstrolre of the stampstems with the ratchets upon the upper ends of the latter, giving them a partial turn, the stems turning in the sleeves. This rotary motion will cause the stamps to wear evenly, their ends being continually brought to bear upon the Ore in the trough in a new position.

By the foregoing description, taken in connection with the accompanying drawings, the operation of my machine will be readily understood. When the driver-shaft is revolved,

Y its pinion will impart motion to the camshaft through its bevel-wheel, and the cam will pass with its inclined edges under the anti-friction rollers upon the sleeves upon the stamp-stems, raising the latter, and again allowing them to drop suddenly when the rollers arrive to the ends ofthe inclined edges, the pawls and ratchets turning them at the upstroke, and the vertical rods and the sleeves and boxes guiding them vertically in their ascent and descent.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United Statesi,

1. The combination of a vertical shaft, a revolving vertical cam consisting of a central sleeve having laterally-projecting anges at its lower end provided with triangular Wings, forming an annular space between them and the sleeve, each wing having an inclined and a .vertical edge, stamps corresponding innumber with the number of the cam-wings, vertical Ways or sleeves I, having laterally-projecting lugs provided with two anti-friction rollers each, and vertical rods corresponding in number and position with the stamps vpendent from the frame, projecting with their lower ends into the annular spaces in the cam, and forming guides upon which the inner antifriction rollers upon the lugs travel, as and for the purpose shown and set forth.

2. The combination, in a stamp-mill, Of an annular trough, a frame composed Of a circular bed or base piece having a central vertical box or bearing, a top plate or casting having a central upright sleeve and upright side pieces, square guide boxes or bearings O, vertical guide-rods w, drive-shaft G', bevel-pinion g, cam-shaft E, cam F, constructed as described, bevel-wheel G, stamps H, sleeves I, provided with projecting lugs J, and friction-rollers J and i, ratchets K, and pawls L, adapted to engage said ratchets on the upstroke of the stamps, all constructed and arranged as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature

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