US43598A

US43598A - Improvement in governor-valves

Info

Publication number: US43598A
Authority: US
Publication date: 1864-07-19
Anticipated expiration: 1881-07-19

Description

UNITED STATES PATENT OFFICE.

GEORGE E. NOYES, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN GOVERNOR-VALVES.

A Specification forming part of Letters Patent No. 13.598, dated July 19, 1864.

To all whom it may conce/rn:

Be it known that'I, GEORGE E. NoYEs, of Washington city and county, in the District of Columbia, have invented certain new and useful Improvements in Valves for Steam- Engines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference thereon marked.

In the drawings, Figure l is a vertical section. Fig. 2 is a horizontal section. Fig. 3 is a horizontal section showing the valve constructed without the perforated cup.

To enable those skilled in the art to make and use my invention, I will describe its construction and operation.

My invention relates to an improved construction ot' regulator-valves, more especially ior steam engines, but adaptable to waterways. It may be described as a balanced sliding regulatorvalve.

A is the globular valve-case, of cast-metal, in general form similar to the common globevalve, and provided with screw-nozzles l and 2 4for the attachment ot' the induction and cduction pipes. The chamber ot' the valvecase A is divided by the diagonal partition I3, (see Fig. 1,) which is cast so that the Y case77 and the partition are in one casting.

bale of the valve. F is the valve-plu g screwed into the case A, and of a diameter suiiicient to admit the valve-cup through it. l

G is a stuffing-box on the outer end of the plug F.

The valve-stem rcciprocatcs through the plu g F and stuffing-box G.

In the operation of my invention the valvestem E, being suitably connected to the usual operating mechanism, after being started by E is the valve-stem, and is screwed into the hand, causes the valvel D to slide in and out of the valve-cup C, regulating the amount of steam according to the degree ot' withdrawal of the valve by the governor. When the valve is seated at the bottom of cup C, as in Fig. 2, the steam is entirely cut ott'. When the valve is withdrawn, as at Fig. 1, one-half of the full head of steam is let on. A suitable spring keeps the valve seated when not operated upon. 1t will be seen that it is immaterial which of the `nozzles 1 and 2 is made the induction-pipe. In either case the steam passes through the whole length of the valve.

The solid arrowsindicate the course of steam when the induction-pipe is attached to nozzle 1. In this casethe steam rstenters the lower chamber ot' the Valve-case. It then passes through the cylindrical valve D and into the perforated valve-cup C. Thence it escapes through openings a a into the upper chamber, and thence through the nozzle 2 and eductionpipe to the cylinder.

The dotted arrows indicate the course of the steam when the induction-pipe is attached to nozzle 2. In this case the steam Iirst enters the upper chamber of the valve-case. It then passes through pert'orations a a into the valvecup C; thence through the valve D into the lower chamber, and thence through nozzle 1 and eduction-pipe to the cylinder.

In Fig. 3 is represented a simpler mode of constructing my valve, which, from its great simplicity, is well adapted to water-ways. This mode dili'ers from that just describedA in dispensing with the perforated cup C and titting the valve D, so as to make it play in and through partition B and to seat at s in the case A, the steam entering thevalve D from the upper chamber at .r x, as is fully shownin Fig. 3. It will be seen that the pressure upon the valve at any given moment is the same at all points, and hence that it is perfectly balanccd.

I have found from actual trial tha-t there is l no need oi' titting the valve into the cup or the partition with great exactness, and that, owing to the almost perfect balance and the small amount of packing, (only the small stuffing-box G around the light valve-stem,) the friction, and consequent wear and tear, is so much lessened as to greatly increase the durability of my valve over the valves generally used. i

The advantages of m y improved valve convnlve D, partition Rand perforated Valve-cup slst in its extreme simplicity, effectiveness, U, when constructed and operating substandura-bility, its security and eheapness. tiully as described.

Having thus fully described my invention, G. E. NOYES.

what I claim as new, and desire to secure by Vitnesses:

Letters Patent, is- V. C. CLAYTON, l

The combination and arrangement of the. J 0. C. CLAYTON.