US154177A - Improvement in puppet-valves - Google Patents

Description

UNITED STATEs PATENT JOHN P. FLANDERS, OF VERGENNES, VERMONT.

IMPROVEMENT IN PuPPET-vALvl-:s-

Specification forming part of Letters Patent No. l 54,177, dated August 18, 1874; application filed March 13, 1874.

To all whom it 'may concern:

Be it known that I, JOHN .1?. FLANDERS, of Vergennes, in' the county of Addison and State of Vermont, have inventeda new and useful Improvement in Puppet-Valves; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which- Figure l 1s a sectional perspective view of my invention in opera-tive position., Fig. 2 is a longitudinal section of the same. Fig. 3 is a` plan of the valve-seat.

This invention relates to an improvement inpuppet-valves,particularly adapted to'pumping-engines similar to that patented to me 15th July, 1873, and numbered 140,819. Its ob'- ject is to arrange a valve which shall have an easy and'free ventage, cheaplyand easily {itted, and easily accessible for repairs; and it consists in a hollow stem for said valve, fitting into and guided in a tubular hub to the cap which closes the valve-cell, said stern' being provided with lateral perforations, to permit the free passage of the fluid, as hereinafter al of the cap B 1gives immediate access there toif required, for repair or the removal of obstructions. The seat C is a flat disk, in thickness suflicient to resist deflectionunder the weight of the fluid column resting upon it.

Y It is accurately turned and tted to the shoulder or rabbet b, and .may be readily put in place or removed therefrom. The disk- C is punctured with a number of holes, e, for the passage of iiuid, said holes being greater or less in size and number, according to the capacity of the inlet and outlet port-s, the prin v ciple of operation depending upon a large ventage and slow motion of the column. The IvalveD is a ilat disk with a central stem, d.

This valve corresponds with the seat C in size,d

and it is facedv with an elastic packing-disk,

E, preferably of india-rubber, t cover and close all the openings e e, except when the pressure is upward, and said valve is thereby lifted from its seat. This elastic packingdisk lmay be secured to the valve-face by a central screwq. The cap B is cast with a hollow or tubular hub, F, a part of which prolfluid, and it is apparent that at every lift of said valve a portion' of this water will be displaced, and-return'again as the valve sinks. It is evident that the action of the valve will be impeded more or less as the relative quantity displaced is reduced or as its ow is accelerated. The relative quantity is largest when the valve-stem d is solid, and itsow `is most retarded when its only escape 'is through the space between the stem and its guide.

To obviate any difficulties on account of the impediments above named, I 4make the valvestem d hollow or tubular, as shown, and make orifices h at the lower end, for the ready escape of the inclosed uid. By these means I not only cheapen the production of the valve, by reducing the weight of metal required, but I also reduce to a minimum the cross-sectional area of the solid portion of said stern, and

therefore reduce correspondingly the volume of water to be displaced by the upper end of said stem,.and cause the bulk of said displacement to take place at its lower end, where the outlets h may 'be ample-to give it vent withv the required rapidity, and the valve be thereby enabled to lift and sink with the least possible impediment.

Having described my invention, what I claim yas new is- `substantially for the purpose set forth.

2. The combination, to form a puppet-valve fora pum-pin g-en gine, of a. cell, A, havin gat its bottom a perforated seat, c, a. lateral outlet, a,

and a cap or cover, B, providedwith a tubular hub, F, and a at valve, D, faced with an elastic disk, E, and provided with a hollow stem, d, substantially for the purposeset forth.

Witnesses:

MosEs S. LEE, JOHN D. SMITH.

, JOHN'P. FLANDERS.

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