US224087A - Haight - Google Patents

Description

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L. HAIGHT. Crushing, Grinding, and- Amalgamating Machine.

N0. 224,087. Patented Feb. 3,1880

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'L.HAIGHT.

Crushing, Grindingand Amalgamating Machine. No. 224,087. Patented Feb. 3,1880.

FI G' Q N, PE 'ERS. PHOTD-LITHOGRAPHER.WASHINGTON. D c.

' UNITED STATESPATENTQFFICE.

, LANSING HAIGHT, or sonoRA, CALIFORNIA.

oRusHrNe, GRINDING, AND AMALGAMATING MACHIlNE.

SPECIFICATION forming part. of Letters Patent 1104224 087, dated February 3, 1880.

i Application filed August [1, 1879.

Grinding, and Amalgamating Machine; and I hereby declare the following to be a full, clear,

and exact description thereof.

My invention relates to certain improvements in that class of ore crushers or grinders known as Ohilian mills, and my improvements consist in applying the power directly to the periphery of the rotating crushingwheels by means of a crown-wheel acting solely by friction.

It also consists in the combination, with the revolving crushing-wheels, of a peculiarly-operating ore-feeder, which distributes the ore equally under the wheels.

Figure l is a perspective view. vertical section.

In the ordinary form of Chilean mill, in

Fig.2isa

which each of the grinding-wheels has a rotation on its horizontal axis, and also a rotation around the common vertical aXis, the wheels are driven by a pinion and bevel cog-wheel connected with the vertical shaft. 111 thus driving the wheels from the central vertical shaft great power is required, and mills of this class require so much power in consequence that they have not been found as economical as would otherwise have been the case.

The grinding-wheels A rotate in a circular pan or bed, B, which is provided with screens a, which discharge into an encircling-trough, 1), leading to the amalgamating-plate or discharge-sluice 0. Suitable frame-work is erected outside the pan or bed, in a cross-timber, G, of which is the upper journal for the vertical shaft D, as shown. On the upper end of this vertical shaft is fitted a crown or driving wheel, E, which revolves free from the shaft,

resting, as it does, on the peripheries of the two crushing-wheels. -A belt, d,passing around the crown-wheel, passes also around a drivin gpulley, e, connected with any suitable power, so as to give motion to the crown and crushing wheels. In this way the power is applied from the crown-wheel directly to the peripheries of the crushing-wheels, the crowawheel acting solely by friction.

The crown-wheel is constructed with iron banding or other suitable material on its under side, pressing directly downward on the crushing-wheels and causing them to rotate over the ore or other material in the bed of the pan in which they revolve. The leverage power, when applied direct on the top of the wheels, is very much greater than when applied to the central shaft or below the eirculnference of the wheels, the crushing-wheels being so placed in relation to the driving-wheel asto give the maximum result attainable with the minimum of power.

As there is no gear, two or more crushingwheels may be used, which is not the case should the wheel be driven by gearing, and. moreover, there are no teeth tobe broken or injured. The whole weight of the crown driving-wheel, resting on the crushing-wheels, steadies them materially in their motion and keeps them down to their work much better than would be the case were a spur-wheel to drive them by means of gear placed in a circle inside the periphery.

On the upright shaft D is fitted loosely a yoke, F, and journals f on this yoke carry the horizontal shafts g for the crushing-wheels. Each crushing-wheel has one of these shafts. and each shaft has independent journals on the yoke. This yoke may slide up or down on the central shaft as the wheels rise or fall over the material in the bed, and, as the crownwheel is loosely fitted on the vertical shaft, it also has a free vertical motion and any rise or fall with the crushing-wheels, while at the same time it is always in contact with them. This yoke at all times keeps the crushingwheels in place in the circle or pan as they travel. Eachwheel and shaft being independent of the others, on each of the horizontal shafts on the yoke may, if desired, be placed a collar, 0, which, by being moved out or in, will allow the shaft to be moved in or out in its boxes, so that the circle of travel of the wheels may be slightly decreased or increased.

Connected to arms Gr reaching fromthe center shaft are plows or scrapers, set at an angle in or out, or both, so as to push the pulp to one side or the other of the bed and keep it stirred up properly. These plows follow or precede the crushing-wheels, and are intended, principally, to keep the piecesor particles of the material crushed. in front of the wheels while they revolve. The bed of the pan may be lined with dies, which may be removed when desired.

In combination with this device I employ an ore-feeder, by which the amount of ore fed to the wheels is regulated. A frame, H, is attached to the yoke on one side of the vertical shaft, this frame carrying at opposite ends rollers I, over which revolves an endless belt, m, formed of canvas or other suitable material. From one of these rollers a belt, h, passes over the horizontal shaft, and the rotation of this shaft then operates the feeding-belt m, which passes under the ore-hopper K on the frame H. By filling this hopper with ore this ore is distributed by the revolving belt through the opening in the hopper all around the bed as the central shaft revolves.

Quicksilver may be placed in the pan or bed-piece, so that the ore may be amalgamated while being crushed. More than two crushing-wheels may be used, if desired, by making separate yokes, and two or more orefeeders may be attached also, if considered necessary.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the crushing or grinding wheels A, rotating in a circular bed, the crown or driving wheel E, moving loosely on the vertical shaft D, the weight of which rests on the periphery of said crushing -wheels, whereby said crushing-wheels are rotated by the friction of said crown-wheel by direct application of power, substantially as herein described.

2. The crushingwheels A, moving on independent shafts g in a sliding yoke, F, on the central shaft, D, in combination with the crown-wheel E, fitting loosely on the upper end of said vertical shaft and revolving inde pendent of it, whereby a free vertical motion is allowed both to the crushing-wheels and crown-wheel, substantially as and for the purpose herein described. I

3. In combination with the crushing or grinding wheels A, revolving about a central vertical shaft and connected to said shaft by the horizontal shafts g and yoke F, the revolvin g ore-feeder, consisting of the hopper K, mounted on the frame H, said frame carrying the oppositely-placed rollers l and feed-belt m, motion to which is given by the belt h from the horizontal shaft, whereby ore is regularly fed to the crushing-wheels at all points of the circle alike, substantially as herein described.

In witness whereof I have hereunto set my hand.

LANSING HAIGHT. Witnesses:

S. H. NoURsE, FRANK A. BRooKs.

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