US363765A

US363765A - Balanced oscillating valve

Info

Publication number: US363765A
Authority: US
Publication date: 1887-05-24
Anticipated expiration: 1904-05-24

Description

(No Model.)

W. T. RBASER.

BALANGED OSGILLATING VALVE.

No. 363,765. Patented May 24, 1887.

@STEAM @vih/Leos@ o vvv @who t N. PETERS. PhMn-Lthogmplwr. Washington. D, C.

UNITED STATES PATENT OFFICE.

WARREN T. REASER, OF FAIRMONT, NEBRASKA, ASSIGNOR TO THE ROUND VALVE COMPANY, OF CHICAGO, ILLINOIS. I

BALANCED OSCILLATING VALVE.

EPECFICATION 'forming part. of Letters Patent No. 363,765, dated ltfay 24, 1887.

(.\'o model.)

To all whom it may concern/ Beit known that I, WARREN T. REAsEP., a citizen of the United States, residing at Fair` mont, in the county of Fillmore and State of Nebraska,have invented certain new and useful Improvements-iu Balanced Oscillating Valves for Steam-Engines; and I do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon', which form a part of this specitication.

This invention relates to an improvement in balance-valves forlocomotives or other steamengines, the object being to construct a bal-A ance-valvethat may be applied to locomotive or other silnil'ar slidevalve engines by removing the ordinary slide-valve and substituting gitudinal section ofasteam-cylinder furnishedv with my improved valve. Fig. 2 is a crosssection of the saine through the dot-ted line x x in Fig. l, and Fig. 3 is an enlarged detail showing a section through the packing.

The valve is so constructed that the steam is admitted at the ends, pressing equally on all sides, and would without other change be perfectly balanced, except the area of the steam-ports h h. The holes e c in' the to`p of the valve are, however, made of sufficient area to compensate formtheport-openings and back pressure of the exhaust.

Ais an ordinary steaiireiigiiie cylinder.

B is the steamchcst.

O is my improved valve, bolted to the seat.

D is the induction-pipe.

Eis the exhaust-pipe.

a is the casing of my improved valve, made in halves for convenience of taking up the 4wear and to facilitate adjustment, the upper 5o by bolts t' t', as shown in Fig. l.

b is a crank-arm attached to the valve stem d', and shows how the eccentrierod maybe attaelied to the valve.

k is the stiiffingbox, which, when the improved valve is attached to an old engine, is 5 bolted or otherwise secured to one side ofthe steam chest, but in new engines may be cast integral with said steam chest'.

c c are packingiings let into agroovein the ends of the casing a, for the purpose of keeping fectly-balauced oscillating valve that may be 7o readily applied to any ordinary slide-valve engine, relieving it from the great pressure of the steam upon such slide-valves, the use of which valves increases the friction to be over* come by the steampressure, and consequently 7 g.

reduces the effective power ofthe engine. This reduction in effective poweris obviated by my improved valve, which, being perfectly cylindrical and without taper, is not liable to stick or have its friction greatly increased by ex- Se pansion, as is frequently the case with oseillati ng valves having ataper; and, further, the ends ofmy valve being provided with a spring packing the pressure of which upon the iianges is regulated by the pressure of thesteam used,

no more friction is generated at these joints than is absolutely required to keep a tight joint between the valve and its casing.

I am aware that it is not new to balance the slide-valves of steanrengines; neither is it new go to partially balance the pressure of the steam upon oscillating valves. I do not, therefore, broadly claim such a device, but limit the same to the especial construction shown and .described in this specification.

Having thus described my invention,I claim as ncw,and desire to secure by Letters Patent, the following:

l. In balanced oscillating valves for steam engines, the combination, with avalvecasing, roo

a,adapted to be bolted to the face of an engnebolted to the valve-face of the cylinder, and Y cylinder within the steam-chest, and provided provided with packing-rings 0 c and openings i 5 with facing-rings c c, and openings c a, to ada a, and the oscillating cylindrical valve C, mit steam behind the packing, of an oscillatinclosed in said casing and provided with 5 ing cylindrical valve,C, provided with ilanged flanged ends fitting over said packing-rings, ends fitting over the packing-rings and havsaid valve having ports 7L h and counterbaling openings ee of an area equal to the area of ance-openings e e, substantially as described. :o its valve-ports h 7L, t0 balance the loss of press- In testimony whereof I affix my signature in nre upon one side of the valve caused by said l presence of two witnesses. 1 ro ports, substantially as described. A XVARREN T. REASER.

2. In a steanrengine, the combination7 with Witnesses: the engine-cylinder A and a steam-chest, B, Crus. S. MILLER, bolted to said cylinder, of the valve-casing a, S. L. BURsON.