US39259A - Improvement in pumps - Google Patents

Description

PATENTED JULY 14, 1863.

B. HOLLY.

PUMP. Jy 4/ PATENT OFFICE., I

BIRDSILL HOLLY, OF LOCKPORT, NEW YORK.

IMPRVEMENT 'IN PUMPS.

Specification forning part of Letters Patent No. 39,259, dated July 14, 1863 To all whom it may concer:

Be 'it known that I, BIRDSILL HOLLY, of Lockport, in the county of Niagara and State i of New York, have invented certain new and useful Improvements in Pumps; and I do hereby declare that the following is a full and exact description of the same, reference beh g had to the accompanying drawings, making part of this specification.

Figure 1 is a central vertical section of a pump-cylinder with my inprovements applied thereto; Fig. 2, a perspective view of the piston detaehed; Fig. 3, a perspective view of the independent Valve ring or' support, and its valve-ring detached.

Like letters of reference indicate corre sponding parts in all the figures.

In ordinary punps the lower or .induct'o valve is formed by cutting it out of the proper form and size from the center of the leather disk that forms the paeking be ween the bottom of the cylinder and the base of the punp. The valve is thus stationary, and cannot be removed tor repairs, except by detaching the bolts and separating the cylinder and base.

My invention consists, first, in the employment of an independent ring or support, B, Figs. l and 3, of suitable size and weight, to which` the lower valve, 0, is secured by a leather hinge, a or in any convenient manner. This ring is made` hollow or open inside, as shown at b, the opening'being of sufficient size to receive a raised flange, d, of

I the rim below, which flange forms the Valveseat; and it also has on its periphery, at proper distances apart, vertical ribs e e', or equivalent, projecting a. little beyond, which ribs fit close] y but easily within the pumpcylinder A when in place, while the main periphery does not touch at all. A portion, f, 'of the Valvesupport is made thinner and of less weight than 'the other sides, as represented most clearly in Fig. This valve-support, resting thus loosely in thepump-cylinder, can be removed at anytime for repairs or otherwise without trouble and without taking apart the Pu'mp. This is a great convenience, and saves much time and expense.. In these respects it is much superior to a v'alve-support that is secured in place by screw-threads. The support is retained in place by its own weight, which is sufficient to more than counterbalance the tendency to rise as the pis'ton is ordinarily worked, the valve opening readily for the passage of the water. It', however,fron1 an intense action of the punp, it should have a tendency to rise, the thin light side f will do so first, the ribs e e thus binding against' the sides of the cylinder, as their support is inclined, and preventing itfro'm being displaced. The device accomplishes this result perfectly, holding the support'in place under all circumstances, so that the valve will shut down closely on i'ts seat. In addition to these advantages, by the use of the ribs I bring only those projeeting portions of the per'i'pheryin contact with-the sides of the cylinder, thus preventing the oxidation of the metal stand ing in the water from making it fast to the cylinder, as it would do if the who e periphery came in oentact with the same. 'In or-detto' use this' pecularly-shaped valve ring or support, it is necessary that the tlan ge d forming the seat, should project up, as indicated'. .This forms. 'a thin rim with a' plane surface, on which the val-ve;strikes and'packs perfectly. The seat must be of th. form to make the valve and support operative. 'In addition to thus forming a seat, it serves as a-base of resistance-to the rising of the valve support by the latter wedging between it and the sides of the oylinder, when the said support is inclined.

My invention further consists in the pecu-:

lar form and Construction of the induetionvalve attached to the ring or support above: described, andits connection with the pisten 'and eduction-valve above. The result desired to be Secured by the arrang'ement is to trip or open both valves to allow the water to run-A back, to prevent freezing in cold weather.

To accomplish this effect, I make the valve C with its rear part, or that which forms the projection g, of greater 'vertical thickness than the opposite forward portion', h, the device be- "a base-ring, i, having a vertical flaige, around which fits the ring of the upper. portion, k, with the' packing l intermediate, as usual.

The base-ring has a central hub, m, with radial arms, leaving intermediate spaces, n n, for the passage of 'the' water. Into this hub screws the end of the pi'ston-rod G, passing loosely through'the bearin'g o of the upper portion, 7:7, and having a nnt, p, screwing on top, above the letter,- to tighten the parts, as clearly represented in Fig. 1. Wi-thinth open space between the parts i and k of tl'fe pisten rests the eduction-valve E, having sufficent vertical motion to allow the passage of. the water,-.and sliding up and down-on the piston 'rod G by means of a central hole, q, which rod thus serves as a guide to the valve. From .the bottom of the valve, at a suitable position, projects a stem, 'r', downward through one of the spaces, n'n, sufiiciently far to trip the upper valve when the parts are allin the proper position'. -The two principal parts of-the piston arethus united by the piston-rod G, passing through both, and are tightened by means of the nut p, while at the same time the central shank of the 'piston-rod serves as a guide to the valve as it rises and falls within, thus allowing the water to escape freely, and always. keeping the valve in place, so that it shu'ts tightlyover the port. When the piston is depressed to its lowest position in the oylinder, as represented in Fig. 1, its botto n will strike the projectioh g of the 'induction-valve G and trip it, raising it to the horizontal po-' siton indicated. When in this position, the' pper valve will also be tripped by the contaet of its stem 1' with the'surface of the-lower valve, no matter what is the position iu'which it strikes.-

In the drawings, the stern is represented as striking the lower valve on the opposite side from the contactof the piston with its projection g, but it is manifest that it maystrike it in anyposition (with the sten and projection in coincidence or right-angled to :each other) valve is open, with its upper surface in a horizontal position, the upper "valve must be tripped. Thisjs of the greatest consequence, since the support B of the induction valve is loose, and the valve may be turned in any direction in the cylinder.

It is obvious that the ordinary induction` valve, which assumes ,an inclined positionwhen open, would not answer the purpose, as

the upper valve would be tripped on but two prts of its 'surface-viz., at its stem and on t e opposite sidethose parts at right an gles thereto `having but little elevation by the opening of the valte. i i

What I claim as my invention, and desire to secure ;by Letters Patent, is-- i 1. The valve ring or support B, provided with the ribs e e, or equivalent, and with one side, f, made lighter than the other, for the purpose of retaining said support in place inthe cylinder. substantially as herein set forth. 2. In combination with the support B and its valve O, the thin raised valve-seat d, ar-

5. The arrangement and eombination of the piston D, composed principally of the parts i k, the Valve' E, the piston-rod G, and nut p, substantiallyas and for the purpose herein set forth. I

In witness whereot' I havehereunto 'signed my name in the presence of two subscribing witnesses.

BIRDSILL HOLLY.

Witnesses:

T. R. BAILEY, Jr.,

I 'with the same eflect, since when the lower g J. R. OLAPP.

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