US253742A - Harrison b - Google Patents

Description

(No Model.) v

H. B. MERCE- STONE AND ORE GRUSHBR.

Patented Feb. 14, 1882.

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PATENT HARRISON B. MEEOH, OF NEW YORK, N. Y.

STONE AND ORE CRUSHER.-

SPECIFICATION forming part of Letters Patent No. 253,742, datedl February 14, 1882. vAtpplicatlon filed November 19, 1881. (No model.)

. To all whom it may concern Be it known that I, HARRISON B. MEEOH, of New York city, in the county of N e w York and State of New York, have invented certain new and useful Improvements in Stone and Ore Crushers; and I do hereby declare the follow -ing to be a full, clear, and exact description 4of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this The object of my invention is to so shape und construct thejaws that when they are reciprocated back and forth by any suitable mechanism they will exert both acrushin g anda grinding effect upon the ore or stone, and thus reduce it much more perfectly than can be done where a simple crusher alone is applied.

Figure 1 is a side elevation of myinvention complete, partly in section. Fig. 2 is a plan view of the frame which moves the lowerends of the jaws. Fig.3is an end view of theframe, showing the manner of boltin g it together. Fig. 4 is a detached view of the jaws by themselves. A represents the two iron frames,which are bolted together by .means of suitable bars or braces, so as to form a solid rigid framein which the two crushing-jaws are pivoted at their upper ends. Each one of these jaws has secured to its inner surface by means of suitable bolts a chilled, hardened, or steel plate, which has its surface provided with suitable corrugations, so as to take a betterhold upon the ore or stone which is to be crushed. These jaws are made concave at one end and convex at the other,

as shown, and are separated a sufficient distance at their upper ends to allow the stone or ore to be freely fed in between them, while their lower ends are in` just close enough contact with each other-to grind and pulverize the ore very thoroughly before it passes out from between them. The lower portions of these jaws, where they come in contact with each other, are not provided with such large grooves, ridges, or other projections as the upper portion, for the reason that they are to move vback and forth upon each other, and eX- ert not only a pressure but a grinding effect upon the stone or ore which is being crushed between them. The lowerends of these jaws are connected together by means of a rectangular frame, D, which has secured in one end the swiveled,connecting-piece F. Bolted to this swiveled connecting-piece F is the lower end of the L-shaped lever ll, which is connected atits outer end by the connecting-rod G with a wheel or any other suitable operating mechanism,-X. As this L-shaped lever H is made to rock upon its pivot M theframeDispushed back and forth, and the lower ends of the jaws are caused to move with it. As these jaws are pivoted at E near their upper ends, their lower ends are made to rub back and forth over each other as they are reciprocated, and thus exert a grinding anda rubbing effect upon the ore. As the ore drops from the lower ends of the two jaws it is caught upon a sieve, S, which may be made to constantly reciprocate, so as to shake the liner portions of the ore or rock l through it, while the coarser portions will be carried down toward a suitable receiver which is connected with an elevator, R, so that these larger portions will be carried up and dropped back in between the jaws, so as to be again passed in between them. By means ofthis construction only ore or rock which has been crushed to a certain tineness Will get outside of the frame.

I am well aware that jaws vhave heretofore been pivoted at their upper ends, and that the jaws have been made oneconcave and the other convex, and thisI disclaim. My invention consists in making each one of thejaws both concave and convex upon its inner side,y so that their upper ends will break the ore, vwhile their lower ends will grind and pulverize it.

Iain aware that it is not new to reciprocate the jaws by means of a `yoke, and that it is not new to provide the jaws with concave and con- IOO Vex surfaces which are smooth from top to bottom.

Having thus described my invention, I claim- In an ore-Crusher, the combination of the two ia-ws pivoted at their upper ends and having both concave and convex surfaces, the said snrfnoes being roughened at their tops where the ore is broken and comparatively smooth et 1o their lower ends where the broken ore is ground, with the frame D, the pivoted oonnecting-link, and the cranked lever H, which is connected at its outer end to an operating mechanism, substantially as shown.

In testimony whereof I afx my signature in presence of two witnesses. f

HARRISON B. MEECH. Witnesses:

L. D. FREDRIGKS, NATHAN HENDRIGKS.

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