Untitled record

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N.PETERS. PHOTO-LITHOGRAPHER, WASHINGTON, D C.

UNITED STATES PATENT OFFICE.

WILLIAM A. YOUNG, OF CHARLOTTE, NORTH CAROLINA.

ROTARY PUMP.

Specification of Letters Patent No. 19,004, dated December 29, 1857.

To all whom it may concern:

Be it known that I, William A. Young, of Charlotte, in the county of Mecklenburg and State of North Carolina, have invented 5 a new and Improved Rotary Pump; and I do hereby declare that the_ following is a full, clear, and exact description of same, reference being had to the annexed drawings, making a part of this specification, in 10 which—

Figure 1, is a plan or top view of my improvement, the top of the cylindrical case or box being removed. Fig. 2, is a vertical central section of the cylindrical case or 15 box, the working parts not being bisected. In this view the pump is represented in proper position at the bottom of a well.

Similar letters of reference indicate corresponding parts in the two figures.

This invention relates to an improved rotary pump which is designed to be submerged or placed at the bottom of the well or reservoir.

The invention consists in placing, in a 25 peculiar manner, a series of valves or buckets within a circular rotating head placed eccentrically within a cylindrical case or box, whereby the valves are rendered self-acting as the head is rotated, and a very simple and 30 efficient pump obtained.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, Fig. 2 represents a well or reservoir 35 which contains the water to be elevated, and B, is a cylindrical case or box which is placed at the bottom of the well or reservoir. The case or box B, has an induction aperture (a) made through its side and an 40 eduction aperture (δ) is also made through the side of the case or box, a pipe C, being connected with said aperture, the pipe C, extending upward above the top of the well or reservoir. The space between the in45 duction and eduction apertures is equal to about one quarter of the circumference of the case or box, as shown in Fig. 1.

D, is a circular head which is considerably less in diameter that the interior of the 50 case or box B. This head is placed eccentrically within the case or box B, and is placed on a vertical shaft E, the lower end of which is stepped in the bottom of the case . or box as shown at (e) Fig. 2. The edge 55 of the head D, is in contact with the inner side of the case or box B, at a point (/) mid way between the induction and eduction passages, as shown clearly in Fig. 1, the point (/) being water tight, and forming a cutoff between the induction and eduction pas- go sages.

In the head D, three vertical rectangular slots (ff), (g), 7/ ^are made. These slots extend entirely through the head and are made in the head tangentially with the shaft ₆₅E, or tangentially with a circle (g^x) which is concentric with the shaft E and head D, as shown clearly in Fig. 1 and in each slot (g) a valve or bucket F, is placed. These valves or buckets correspond in form to the 70 slots (g), the outer ends of the valves being curved or rounded to correspond to the curvature of the inner side of the box or case B, against which they bear. One side of the outer part of each valve or bucket 7g has a curved projection (h) attached as shown in Fig. 1.

The shaft E, extends upward above the well or reservoir A, and is rotated by any proper means and through the medium of 80 any suitable gearing.

The operation is as follows: The head D, is rotated in the direction indicated by the red arrow and the outer ends of the valves or buckets F, owing to their tangential posi- 85 tion in the head D will always press against the inner side of the case or box B. The water in the well or reservoir A, will pass through the induction passage (a), see blue arrows, and will be forced successively by 90 the valves or buckets F, as they pass the induction orifice, up through the pipe C. The resistance the water offers to the action of the valves or buckets will tend to keep the outer ends of the valves or buckets 95 against the inner side of the box or case and the curved projections (h) are intended to aid or increase this effect. Still, independently of the projections (h), the water will have a tendency to thrust the valves or 100 buckets outward, owing as before stated to their tangential position with the shaft E, and consequent oblique position relatively with the direction in which the water is forced. This will be clearly understood by 105 referring to Fig. 1, in which, the red dotted line (a^x) shows the direction in which the water is forced, and the red dotted line (β^χχ) the thrust given the valves or buckets by the reactive force. The ends of the 110 buckets therefore are made to work water tight against the inner side of the case or

19,004 box B, without the aid of springs or any extraneous or special device or appliance and the pump is therefore rendered extremely simple and efficacious. By turning the head 5 in a reverse direction to that indicated by the red arrow, the valves F, will be forced onward of course as the reactive force will be in a reverse direction to that indicated by the red dotted line (a^xx) as shown by the 10 blue dotted lines (δ^χ). Therefore by rotating the head D, one or two revolutions backward and throwing the valves or buckets inward, the water in pipe C will be allowed to descend and said pipe be pre15 vented from freezing up in winter.

I would remark that there are other forces which tend to keep the valves or buckets F, thrown outward, viz, the friction between the valves F and the bottom part of the 20 pump and the centrifugal force generated by. the rotation of the head D. These forces however are chiefly important in acting upon the valves as they pass the point (/) rendering their movement or action quick or 25 so actuating them as to cause the water which passes through (a) to act upon them as soon as they pass the point (/).

I am aware that sliding pistons have been fitted in rotating heads placed eccentrically within cylindrical cases or boxes and ar- ₃₀ranged in various ways, said device being employed both for rotary pumps and rotary steam engines. I therefore do not claim broadly the employment or use of sliding valves or buckets placed within a head fitted 35 eccentrically in a case or box; but,