US244240A - William h - Google Patents

Description

(No M odel.) J

W. H. HOWLA-ND'.

ORE-AMALGAMATOR.

110,244,240. Patented July 12,1881.-

I BY M ATTORNEY-S.

u PETERS, Pinch-Lithographer. wman mn, n.0,

UNITED STATES PATENT OFFICE.

WILLIAM H. HOWLAND, OF SAN FRANCISCO, CALIFORNIA.

ORE-AMALGAMATO R.

I SPECIFICATION forming part of Letters Patent No. 244,240, dated July 12, 1881.

Application filed January 3, 1881.

To all whom it may concern:

Be it known that 1, WILLIAM H. HOWLAND, of the city and county of San Francisco, California, have invented a new and useful Improvement in Ore-Amalgamators, of which the following is a specification.

The objects of my invention are to obtain the most thorough intermixture of the quicksilver with the pulverized ore and the least possible loss of quicksilver during the operation.

My invention consists in a stirrer formed by a rotary yoke carrying paddles combined with a pan fitted with dies, against which the pulp is forced by the paddles, and an inner ring that insures the circulation of the pulp, as hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a plan view of a machine of my improved construction, the ring being partially removed; and Fig. 2 is a vertical section of the same on line at m, Fig. 1.

Similar letters of reference indicate corresponding parts.

A is a circular pan, formed with a central hub, a, for the driving-shaft b, which extends through the pan from below.

B is the supporting-frame of the pan, on which shaft 11 and the driving-gear is also sustained.

In the bottom of pan A, nearthe sides, is an annular groove, 0, forming a pool below the pan-bottom, and from this pool a passage, d, extends through the side of the pan. This passage is for use in supplying quicksilver, for which purpose a filling-tube, e, is connected with it, and also for drawing off the pan, which may be done by removing the plug at the outer end of the passage. The upper edge of the pan is fitted with a ring, f, which curves inward and downward to direct the material to the center. Within the pan is fitted a beveled ring, 9, that forms an inner case, separated a short distance from the sides of the pan. This ring 9 may be supported in any suitable manner that will give free passage for the pulp behind the ring. As shown, it rests by a flange upon lugs 9 formed on the pan. The pan is further formed at the angle (No model.)

between the bottom and sides with dovetail lugs h, that receive dies 2'. These dies may be more or less in number, and by the (lovetail connections their removal and placement are rendered convenient.

The driving-shaft b carries a coneshaped yoke, k, which is keyed to the shaft above the hub a, and extends to near the bottom of the pan. At the lower part of the hub it is formed with side lugs, t, to which arms m are bolted. There are six (more or less) of the arms m, and they are fitted at theirouter ends with. plates 12, which are of about the same width as the dies 6, and move in the plane of the dies. arms by bolts passing through slots, so that the plates can be adjusted to and from the dies. There should be a small space between the outer ends of the plates and the inner surface of the dies.

In operation the revolution of shaft 1) causes the rotation of arms m over the bottom of the pan, and the plates n are moved in front of the dies i. The pan being supplied with pulp and quicksilver, the plates n act to carry the mass around, and by concussion with the dies t the outer portions of the mass are thrown up behind and over ring 9 to the center of the pan. A continuous circulation of the whole mass is thus obtained, and the quicksilver is brought into intimate contact with the broken ore. At the same time the ore is further pulverized between the plates at and dies t.

This machine is durable and effective. The wearing parts can be readily replaced when worn. The pool 0 collects a body of quicksilver below the mass of ore, and the plates a, moving above the pool, keep the bottom ore moving, and at the same time draw or force the quicksilver out of the pool. The arms m will be steel or wrough t-iron. The beveled ring 9 will be made of copper or of iron, according as to whether silver or gold ore is being worked. This ring, in addition to its mechanical functions, hastens the amalgamation in supplying iron or copper by chemical action. The addition of filings to the mass in the pan is for this reason not required.

Havingthus described my invention,I claim These plates at are attached to the as new and desire to secure by Letters Patent- 1. In ore-amalgamators, the rotating yoke 7c, carrying arms m, and plates 12, combined with 5 pan A, provided with dies i, and the ring g,

substantially as described, combined for operation, as set forth.

2. In ore-amalgamators, the curved ring f, combined with pan A, inner ring or case, 9,

and revolving stirrers, substantially as and 10 for the purposes set forth.

3. The inner ring or case, g, co1nbined with pan A and rotating stirrers substantially as and for the purposes set forth.

WILLIAM H. HOWLAND.

Witnesses Gno. D. WALKER, O. SEDGWIGK.

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