US253121A - Chaeles p - Google Patents

Description

(No Model.)

'0. P. STANFORD.

QUARTZ GRUSHBR.

Patented Jan. 31.1882.

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UNrreD STATES PATENT OFFICE.

CHARLES P. STANFORD, OF SAN FRANCISCO, CALIFORNIA.

QUARTZ-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 253,121, dated January 3], 1882.

Application filed July 27, 1881. (No model.)

To all Awhom it may concern Be it known that I, CHARLES P. STANFORD, of the city and county of San Francisco, State of California, have invented an Improved Quartz-Crusher; and I do hereby declare the following` to be a full, clear, and exact description thereof.

My invention relates to that class of mining machineryknown asquartz crushers or mills57 and it consists in certain details of construction, as will be hereinafter described and specically claimed.

Figure l shows a front elevation of my device. Fig. 2 shows a vertical section of the same.

A 'represents a flat-bottomed mortar secured appropriately to a foundation or mortar-block and provided with screens B. The ore is fedv to the mortar in any suitable manner. Vithin this mortar is the crusher or pestle C. This consists of a heavy metal block having peripheral dies D upon its undersurface, bolted, keyed, orotherwisetirmly secured to said pestle, shown here as being' keyed through projecting bosses by keys 7c. The mortar A is large enough to easily contain the pestle and allo7 it considerable side-play.

E represents the stein or handle ofthe pestle extending upward from the mortar.

F represents the frame of the device, having cross-guides G, in which a vertical shaft, H, is journaled and properly supported.

has secured to it a crank-arm, I, through the outer end of which the stem or handle E loosely passes. The shaft H, being about over the center of the mortar, the crank I causes the stem, in order to pass through it, to incline somewhat, and so tilt the pestle to one side, as shown iu This shaft The shaft L is journaled in the dies successively, thus producing a crushing and grinding` force, the whole weight of the pestle being thrown upon each die as it is tilted by the revolution of the crank, and as the faces of the dies D are made, as shown, in a plane tangential to the radial line of the movement of the pestle, a series of at surfaces ofthe dies, parallel to the ilat bottom of the mortar, intermittently strike the ore percussively. The stem, by passing` loosely through the crank, is not revolved upon its own axis, and consequently the pestle does not turn in the mortar.

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

An ore-Crusher consisting,t of the mortar A, pestle C, with its separated peripheral dies D,

keyed to the bosses, as shown, and stem E,

and the crank I, revolving shaft H, gears J and K, shaft L, and driving-pulley M, substantially as herein described. Y

In witness whereof I have hereunto set my hand.

CHARLES I". STANFORD.

Witnesses :fr

S. H. NoURsE, FRANK A. BRooKs.

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