US45484A - Improvement in chain-pumps - Google Patents

Description

UNITED STATES PATENT OFFICE.

L. A. FISHER, OF CHICAGO, ILLINOIS.

IMPROVEMENT lN CHAIN-PUMPS.

Specification forming part ol' Letters Patent No. Ll 5,484, dated December :20, 1R64.

To all whom 'it muy concern Beit known that I, L. A. FISHER, of Chicago, Cook county, in the State ot Illinois, have invented an lmproved Chain-Pump, and l do hereby declare that the following, taken in connection with the drawing which accoinpany and form part of' this speciiication, is a description ot' my invention sufficient to enable those skilled in the art to practice it.

This invention relates to the construction of chainvpumps; and it consists in a peculiar method ot' or mechanism for actuating the valves or buckets as they enter the water in the well or cistern to which the pump is applied, so that until each bucket enters the spout or tube through which the water is elevated it has the position best adapted for allowing it to pass through the water without obstruction to its movement.

The drawing shows my invention as embodied upon a floating pump designed for pumping water in large volume from ponds, ditches, tbc., though the improvement is ot' course not confined to such application.

The general construction and operation of l the pump will be readily understood from the drawing and need not be jnuticularly described.

Shafts a b each carry a pair ot' sprocketl Wheels, c and d, and around the upper and l lower one on each side an endless chain, c, works, the bucketsfbeing mounted upon and g carried by these chains. Each bucket, instead of being made immovable with respect to the j chains to stand in a position at right angles to the links from which the bucket projects as it passes from wheel to wheel, is so hung as i to have its position changed asit passes around the wheels--this heilig effected as follows:

Each bueketis hung by brackets g (extending from, at, or near its opposite ends) to the tops of brackets or projections la on the chains c. From the links next beyond the links of the chain in advance of those from which thel brackets L project are other and similar brackets or projections, From the tops of these brackets links or connecting-rods k extend to the top of the bucket in rear of the same, as seen in the drawing. As the links ot'Y the chains are brought around upon the perimeter of the sprocketwheels the distance between the outer ends of the brackets hiis increased. When the brackets i begin to turn upon the wheels, their movement causes the connect ing-rods la to turn the bucket to which they are jointed into the position seen in the drawing, by which they enter the water edgewise and present no obstruction to the movement of the chains and buckets until it comes into the tube l, or into the position therein in which it will lift a volume of water, filling the space between this and the next bucketin advance. rEhe bucket is brought into this last position by the straightening of the links as they leave the sprocket-wheel, which carries back the brackets It z' to their nearest relative position, and causes the bucket to stand at right angles tothe general line of the links of the chains.

I claim- The combination ot' the movable buckets with the mechanism for changing the position of the same, substantially as set forth.

L. A. FISHER.

Witnesses L. M. LULL, WILLIAM CASE.

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