US1793585A

US1793585A - Valvular apparatus

Info

Publication number: US1793585A
Authority: US
Inventors: Bruce William Joseph Willett
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-11-10
Filing date: 1928-10-11
Publication date: 1931-02-24
Anticipated expiration: 1948-02-24

Description

Feb. 24, 1931. w@ J. w. BRUCE VALVULAR APPARATUS Filed Oct. 11, 1928 3 Sheets-Sheet 1 Feb. 24, 1931. I w. w BRUCE 1,793,585

' VALVULAR APPARATUS Filed Oct. 11, 1928 3 Sheets-Sheet 2 AI/M [1 A3906:

Feb. 24, 1931. w. .1. w. BRUCE VALVULAR APPARATUS Filed 0m. 11, 1928 a Shets-Sheet 3 which leads to an independent or separate drain trap or other outlet.

The drawings illustrating the invention are annexed, in which Figure l is a plan in part section; Figure 2 is an end view; Figure 3 is an elevation showing the hand operated pilot valve and ports in section ,and Figure 4 is a section showing a detail. 1 I In the drawings,1 designates generally the main casin of the valve: 2 is the valve seat within tne casing; 3is the main valve ;'4'is the valve stem or red; 5 isthe piston; 6 the cylinder in which it works; and 7 generally designatesthe pilot valve. Q 7

It may be assumed tliat the valve "shown in the drawing is adopted to control the supply of steam or other; gaseous fluid to any apparatuswhereperiodical flow or supply is required, such for-instance as a whistle orsiren,

the pilot valve being adapted tobe operated and controlled by hand,in the case shown by I a handoperated; lever 8, which is actuated, say manually, whenever a supply of steam or otherfluid is required to be delivered to the Of the pilot. valve 7, 9 is the valve proper, which controls the supply of steam or othcr fluid to the cylinder 6 foroperating the piston 5, and opening the main supply valve 3;

-- placeof use.

= and this steam or. fluid is led from the interior of the supply inletbranch 17 of the valve case 1 below the valve 3, to the top of the valve 9 by a port.10,,and a short vertical port 11, leading directly into the valve chamber proper 14, the ports 10,11 being. formed-say by drilling+in the bottom. flange 12 oftbe lnainvalve. This flange12is made espe cially thick and is extended Ioutwards radiall T where the valveT comes and forms a V 7 bolts.

support or bed same upon which its firing-e13 rests, it mak ng oint with the upper surface of the flange 12 by means of studs or the valve 9 rests, the port' 16 is drilled from the outside of the-flange 12in a horizontal direction, whilst the other vertical port 15 is drilled from the bottom of the flange 12 vertically up through a projecting part 17* on the steam supply branch 17 ofthe main steam valve. The outer ends of these

ports

16 and 15 are plugged or welded after drillv111g and so closed. l

The valve 9 has above it a portion consist- 20, and prevent the ing of a piston 18, which fits and works within an inwardly projecting portion 19 of the casing 20; and on the lower part of this pis-' ton part 18, are two enlarged parts 21 and 22,

the former of which works in an annular recess in the part 19 as shown, whilst the larger part 22 operates connection with the under surface'of the part 19, so that these parts form a sliding closure between the valve chamber 14, and the upper part of the casing escape-of fluid past it; while the valve is normally pressed upwards by the pressure, but

of which rests on the piston part18jand the toppn the bottom of a gland c'ollar 24, which screws into the top of the casing, 20, and according to the degree it is screwed in, so will be the pressure exerted by -the spring23 on thevalvei g The valve parts 9, 18am connectedto the operating lever-8 by a stem 25, which passes .curedto'the end oft-he lever. 1 In the case where steamis the fluid used,

a drainvalve ofthe kind hereafter specified is through'the neck 24, and. its upperend is seprovided on the valve case, and communicates with thespace of the valve case proper beneath the main valve 3,."and the .cylinderG for carryin off any 'Vvblter thatjinay .be formed in or find their .way intothese parts.

- The pilot valve 7 1is disposed in relationto ltheinletz and discharge branches of the main valve at a; point lying between the general vertical and transverse planes of the valve;apparatus as awhole, so that it lies nearer to the, end of the. cylinder Gthantoth'e opposite end, of the valve case; By so arranging and disposing this valve,thexformation of the ports in .the'flange 12 is facilitated, and the valve is asaQwhole rendered more compact; and'thepart 1'?" on theoutside'of the'branch 17, to'beused for having the port l5fF-formed on it. Y f. f The handoperating lever is supported by pivot stud 26,;which screwsinto a boss 27 formed on thesideof thevalve casing 1 as shown in dotted lines in Figure 1. a

.In the'case of the fluid being steam,to pre- ,vent waterjof condensation getting access to the cylinder 6 and piston 5, from the interior it is kept upon its seat by .a spr ng 23 in the casing 2 0, the bottom of thevalve case, a springsealing device 28 is used betweeira shoulder on, the valve stem 4as shown andthe end of the, cylinder throughwhichthis'steam passes; and in the case shown this sealing device is in the form of an annular plate spring round the rod 4+which is normally under stressresting 011 the shoulder on the stem and-bearing at its edge on the surface of the cylinder closed end.

Thus a 'metallic closure: exists between the valvestem and the end of thecylinder.

It will be seen that by-theconstruction of apparatusdescribe'd, whenit is desired to inspector open the cylinder 6, no pipe or other to be made 01' unmade.

' automatically drained away 7 end of the cylinder through this opening,

In cases where the valve is used to control the supply of steam to apparatus say on a ship, such as a steam whistle or siren, and water is liable to collect in the discharge part of the valve and pipe above it, which leads to the whistle orapparatus, a hole is provided leading to a chamber below (obliquely arranged in the valve casing) within which is a valve, normally kept open by a spring, so that as the water of condensation reaches the easing it can pass away by a pipe or drain; whereas if the main valve is opened, the steam under pressure exists in the discharge side of the drain valve case, then thispressure acting upon the head of the valve will press it down against the action of the spring, and close it, and no steam can escape.

This valve is shown in Figure 4 in section, 30 being the valve proper, working in conncction with the seat 31 of the valve case; and

32 is the spring by which it is normally'keptopen, while 33 is a chamber or space above the valve. Set is a port leading from the steam delivery space beneath the valve 3 by which any water collecting in this portion of the valve case can pass awaythrough'this port into the chamber 33, and then past the valve 30 it being carried away from the valve case by the drain branch 35, and a suitable drain pipe.

' The hole or port which connects the outer 6 with the chamber 33 of the valve 30 is marked 36 and by it water is der.

Vith regard to cases in which the apparatus on the discharge side of the valve '3 is not valve 30 may be dispensed with, and to carry off any water in the steam inlet branch (17) to the main valve, a hole. 37 shown in dotted lines will be formed in the valve casing, so that water from this branch can pass away which will be connected by a drain pipe and steam trap. By this means water hammer in the apparatus is prevented.

If the apparatus is to be used as an automatic pressure relief valve, the pilot valve and ports connected with it would be so adapted that the pilot valve proper 9 would be lifted off its seat by the steam at a predetermined pressure, and so it would pass to the cylinder 6, and open the main valve 3, and release the steam or fluid.

What is claimed is 1. A valvular apparatus including a pilot valve which controls the supply of fluid to the cylinder and piston connected with the main valve for operating the same, said pilot valve being supported on a flange of one of of the apparatus,

from the cylin- V i the branches of the valveoase throughWhich the fluid passes, the lower. part of the casing of the pilot valve, ing on an extended part of one of theflanges and the pilotvalve proper operating on a flange, and in a chamber formed bythe lower part ofthe valve casing, and steam or fluid beingnormally supplied from the interior of the main valve casing; a closure between the lower pilot valve chamber, and the, upper; part of the casing thereof being effected by a sliding piston type of fitting. v

2. A self-contained valvular apparatus comprising a main valve for controlling the supply of fluid to the article or part to be operated and a piston and cylinder contained axially in line, inlet and outlet branches with attaching flanges, the axes of which are tr'ans-' v versely disposed n relation to theaxls of the main valve and its cylinder and a pilot supply control valve one end of the case ofwhich is attaehedto the outer surface. of one of the said flanges of the inlet or outlet branches of the main valve case. 1

3. Apparatus for controlling the supply of fluid as defined in claim 2,.wherein ports be-g tween the pilot valve chamber proper, and the interior of the main valve casingpassages through which the fluid passes, are formed by holes, partly in the flange supporting the pilot valve case, and partly in the metal of the main casing of the apparatus.

In testimony whereof I have subscribed my name to this specification. W. J. WILLETT BRUCE.

seat on the surface of thewhich is open below, rest- 7 r