US257928A - Sifter - Google Patents

Description

SIFTER.,

Patented May 16 N. Pnnnanuwuuwwm wnhingem. n. c.

UNITED STATES4 ATENT OFFICE.

GEORGE T. FINLEY, OF WEBSTER, PENNSYLVANIA.

SIF'VI'ER.

SPECIFICATION forming part of Letters Patent No. 257,928, dated May 16,` 1882.

Application sica Aprire, ieee. (No model.)

To all whom it may concern:

Be it known that I, GEORGE T. FINLEY, a citizen of the United States 0i' America, residing at Vebster, in the county otl Westmoreland and State of Pennsylvania, have invented certain new and usef'ul Improvements in Sifters; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled `in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of thisspecitication.

i My invention relates to that class of sif ters which are used to separate the tiner and coarser particles of sand, lime, cinders, and similar substances; and it consists in certain elements of mechanism combined, as hereinafter described, and specifically set forth in the claims.

Figure 1 is a perspective of a machine cmbodying my invention, and Fig. 2 is a central vertical longitudinal section ot' the same.

Like letters refer to like parts in both figures;

A represents a suitable frame-work for the support of the mechanism, and it is provided with handles'B, by which it is adapted to be carried from place to place.

Within the front standards of thc frame is journaled acrank-shaft, C, which is connected by a pulley, c, and belt d to a driving-pulley, c, mounted on a parallel shaft, E, provided with a'crank, c', by which the machine is operated. A be1t-pulley may be mounted on the crank-shaft C, and power maybe applied thereto, if desired.

. of the frame-work.

frame G are secured` the sides ot' the chute J,

which sides are perforated at j in a manner which permits the passage therethrough'of and oscillation of said chute about the crank-shaft C. The rear end of the ,screen'frame projects beyond the chute, as clearly shown at g.

Within the trame G is located the screen K, having an opening, k, at its rear end corresponding to and registering with the opening lformed by projecting frame G beyond the chute J. The frame G and screen K are inclined to the rear and the chute is inclined to the front, as shown.

front end of the in achine, and the screen, screenfratrie, and chute are simultaneously agitated, being directly connected to each other, by rotating the crank-shaft, as described, resulting in an oscillatory and swinging motion thereof, which is effective in separating the particles by forcing the liner through the screen into the chute and feeding` both along the inclines ot' the screen and chute, delivering the tinerportions at the front, While the coarser fall to the ground, or into asuitable receptacle at the rear ofthe machine.

If desired, gearing maybe substituted for the belt and pulleys shown, anda iy-wheel may als'o be applied to either of the shafts.

Having described my invention and its op; eration, what I claim as new,and desire to secure by Letters Patent, is-

1. The combination of theinclined suspended screen-frame and screen with the chute oppositely inclined and having perforated sides and secured to the screen-frame, and means for their operation, substantially as shown and described.

GEORGE T. FINLEY.

;Witnesses:

A. A. PERKINS,

A. J. MILHOLLAN.

2. rllhe combination of crank-shaft G., rod H, i

Substances to be screened are fed into. the

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