US198936A - Tent office - Google Patents

Description

E. GIMSON. Ore-Crusher.

Patented Jan. 8,1878.

HNIIUII 'UNITED STATES PATENT- OFFICE.

EDWARD crimson, or srALYBRIDeE, ENGLAND IMPROVEMENT IN ORE-CRUSH ERS.

. 'Specification forming part of Letters Patent N0. 198,936, dated J annary 8, 1878 application led October 15, 1877.

To all whom it may concern:

Be it known that I, EDWARD GiMsoN, of Stalybridge, in the county 'of Lancaster, England, a subject of the Queen of Great Britain, have invented or discovered new and useful Improvements in the Construction of Stone- Breakers; and I, the said EDWARD GIMSON, do hereby declare the nature of the said invention, and in what manner the same is to bel performed, to be particularly described and ascertained in and by the following statement thereof, that is to say- The machines known as i Blake stone-break ers have only one breaking-j aw; consequently but one size of stone can bebroken at a time. To further reduce the stone the jaw has to be reset and the operation repeated. Now, in my improved machine-of which Figure 1 shows a longitudinal section and Fig. 2 a plan-there are two adjustable crushing-j aws, working alternately at each revolution of the eccentric shaft. The Working parts of the machine are inclosed in a strong rectangular frame, a, the ends whereof form two fixedserrated vertical jaws, b, which face inward. [inmediately opposite these flxed jaws are two movable serrated jaws, c, hung upon trans- `verse shafts extending across the upper part of, the frame. Midway between such movable jaws is fitted a vertical rocking lever, d, centered upon a transverse shaft, e, extending across the lower part of the machine. Rocking motion is communicated to the upper part of this lever by an eccentric, c', formed on the main transverse shaft g, and workin g in a deep brass or other suitable bearing, h, which moves vertically in a, guide formed in the rocking lever. By this arrangement the rotary motion of the eccentric imparts only a rocking movement to the lever, the bearing h simply gliding up and down in its guide. I make the bearing h and the bearings of the main and rocking shafts square, so that, when worn on one face, by turning the blocks round a quarter of a revolution fresh wearingsurfaces are obtained, thus eecting a considerable economy of wea'r and tear. Suitable recesses are formed at the lower part of each movable jaw, to receive the outer ends of a series of toggles, z', forming adjustable stays, for giving motion to the jaws. rllhe inner ends of these toggles enter corresponding recesses in the rocking lever, and each toggle has a handle, le, for removing it when required. When the rocking leveris working, reciprocatory motion is imparted to each jaw through the toggles, and the size of the broken stone is regulated by the length of the toggle, the longer toggles producing the smaller sizes.

rIhe distance between the fixed and movablejaws is regulated by two tension-rods, j, or equivalent adjustable connection, extending between the lower inner angles of the movable jaws. The free ends of these rods are united by a right-and-left-hand-threaded nut, 7c, by turning which in either direction the threaded ends of the tension-rods are brought nearer to or farther from each other, thus proportionately increasing or diminishing the space between the jaws. Such rods, or wellknown substitutes which may be employed, also serve to keep the movable jaws tight upon the toggles and rocking lever.

With my improved machine the operation of breaking stone and other minerals is very greatly facilitated, and the product doubled. At the same time the machine is far more economical in use, owing to its wearing parts being so thoroughly protected.

I claim as my inventionl. The combination, substantially as hereinbefore set forth, of the fixed end jaws, the movable jaws, the rocking lever between the movable jaws, and the stays or toggle-connections between the rocking lever and movable jaws, whereby each of said jaws is operated upon by the rocking lever with the full power of the machine, and they are caused alten" nately to move toward the xed jaws, thus doubling the amount of work which could be done in a given time by a single set of jaws.

2. The combination, substantially as hereinbefore set forth, of the frame, the movable jaws, the shafts upon which they are supported l at their ends, the rocking lever between said jaws, supported upon a shaft at its end oppotoggles loosely tting at their ends in the rocking lever and .movable jaws toadmit of adjustment of the jaws to vary the size ofthe crushed stone.

E. GIMSON.

Witnesses:

SHIRLEY BOWDE,

33 Southampton Buildings,

London, W 0., Patent Agent. GEORGE HENRY PRIEST,

10 East Harding Street, Teftfn` Lane, E. C.

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