US2457779A - Gas cock - Google Patents

Description

Dec. 28, 1948.l w, s, KINCMP? GAS COCK Filed Sept. 25, 1944 INVENTOR.

WILLIAM $.KINCAID ATTORNEYS FIGB.

Patented Dec. 28, 1948 UNITED STATES PATENT OFFICE j GAS COCK William S. Kincaid .Detroit, Mich., assigner to The Roberts Brass Manufacturing-Company, Detroit, Mich., a corporation of Michigan Appiicatmn september 25, 1944, serial No. 555,683

The invention relates to gas cocks more par ticularly designed for use in controlling gas burners. Y s j l It is the object of the invention to obtain a construction by which the cock may be adjusted to a plurality of diierent positions for imposing different restrictions to' the ilow of gas so as to correspondingly regulate the flame of the burner. To this end the invention consists in the construction as hereinafter set forth. V

Inthe drawings: i Fig. 1 is a side elevation of my improved gas cock;

Fig. 2 is an elevation viewed at right angles to Fig. 1 and with the cap andvalve plate removed;

Fig. 3 is an elevation of thevalve-plate;

Fig. 4 is a cross section onA line 4v4, Fig.` 1;

Fig. 5 is a cross section on line `55, Fig. 1;

Fig. 6 is a similar section with the latch member removed;

Fig. 7 is a plan view of the latch plate detached; i i

Fig. 7A is a side elevation thereof; i

Fig. 8 is an enlargedsection through fthe cock4 on line 8-8, Fig. 1;

Figs. 9, 10 and 11 are views `simi1ar--to.Figi` 8 showing the plug valve in different positions of adjustment; l i f Fig. 12 is a view similar to Fig. 2 showing the valve plate in position but with the cap removed; and 1 n Fig. 13 is an elevation of the plug' Valve` and latch plate removed from the casing.

The cock is of the type comprising a casing A having a tapering rotary hollow plug valve B therein provided with a port C for" registering with the inlet passage D in the" casing. The outn let passage E is in alignment with the plug and is in constant communication with the chamber therein. Thus, when the plug valve is turned with the port C out of registration withthe passage D, communication between the 'passages D and E is cut off. On the other hand, when the port C is in full or partial registration with the passage D, gas will ilow from the latter to the outlet E.

'I'he construction as thus far described visfthe ordinary construction of gas cock.` With this it is possible to regulate theflo'wof gas therethrough by turning the plug intov different positions but it is difficult to accomplish this with fany desired degree of accuracy. It is, therefore, the primary object of my invention `to obtain al vconstruction in which different positions of adjustment of fche valve will predeterminedly control the ilow ofithe `accomplished by the gas therethrough with great accuracy. This is `following construction. Within "the casing A at one side thereof is formed a chamber F which is connected to the inlet passage D by a bypass G. The chamber F is also connected with a plurality of ports I-I, I leading -to the seat for the plug valve B. These ports are so positioned that the port C of the valve may be registered with each when completely out of registration with any lother port or with the passide of the recess F which plate engages a shoulder in aj' nipple A on the casing `A. The plate is securedto the casing by screws L and the metering pins J `and J extend respectively into the "ports H and I and may be adjusted to variably 4restrict the same. are engageable for adjustment by a screwdriver,

Slotted heads J 2 on these pins and springs J3 between said heads and the plate K hold the same in adjusted position. The plate K and pins J and J are enclosed by `a cap M threadedly engaging the nipple A.

The valve B has an operating stem N extending outward therefrom being flattened' on one side for non-rotatably engaging a socket in the handle member O. To hold the Valve in itsI different positions of adjustment, I have provided a latch mechanism comprising a member P slidably and non-rotatably engaging' Ythe flatten stem N. A spring Q on the stem yieldably urges the member P in an outward direction. R is a plate secured to the casing A by screws R and apertured for the passage of the stem N. This plate has a plurality of rounded projections R2 forengagement with recesses P' in the member P. These projections and recesses are so located as to engage with each other in the different positionsof adjustment of the valve in which the port C is registered respectively with the passage D, the p ort Hor the port I.` The spring Q yieldably presses the member P against the plate 'R so that the projections R? will snap into latching en gagement with the recesses P' in each position of adjustment but without interfering with further adjustment when desired. A projection P2 on the member P engages shoulders A2 on the casing A to limit the rotative adjustment of the stem. Thus, in use the operator by turning the handle O can adjust the cock from the position shown in Fig. 9 where the gas is completely cut oi to any one of the positions respectively shown in Figs. 8, l and 11. vIn Fig. 8 the flow Qt lgas from the inlet D to the outlet E is unrestricted. In Fig. 10 the flow through the port I is restricted by the metering pin J and in Fig. 11 the flow through the port H is restricted by the metering pin J.

To adjust the valve for use with .diner-.ent line gas pressures, the cap M may be removed and the metering pins J and J adjusted *by va screwdriver until the desired flow of gas is obtainedy through each of the ports H and I. The cap 'M may then be replaced. In the process of construction, the chamber F is formed in the nipple A before the ports H and lI and `by-pass G are .formed in the casing A. By referringto Figs. 8, 9, .10 andv 1-1 respectively, it will be noted that the chamber F is Lat the outer ends vof the ports H and I and byf-pass G, hence said ports H and I and by-pass G `may be formed by drilling the casing A from the base of the chamber F before the closure plate K and cap M are applied to said casing. Gas is always 'free to flow from the inlet passage D via the bypass G to the chamber F, and the metering pins J 'and J" carried by said closure plate K control .the -low of gas 'from said vchamber F to the port C `in the Valve B.

What I claim as my invention is:

A1. A valve cock comprising a casing having `va seat fora rotary valve, inlet and outlet passages nleading from said seat, said outlet passage being in axial alignment with said seat, and said inlet 'passage extending laterally from .sa-id seat, a chamber at one side of said seat andzopening outwardly, a by-pass between said inlet passage and -said chamber, a pair of laterally spaced'ports vtex- -tending between said chamber` and valve seat, the construction and arrangement of ,said bypass, spaced ports and chamber being ysuch that 1 saidspaced ports and by-pass are accessible from said 'chamber and may be formed in'said casing by drilling said casing from `the zbase of said chamber, a removable closure for said chamber, means-carried by said closure for controlling .said spaced ports, and a rotary valve engaging l,said

of spaced passages connecting said recess with said chamber, a removable closure plate for said recess, detachable means accessible from the exterior of said body for securing said plate ovei` said recess, separately adjustable metering means carried by said plate for controlling said spaced passages, a removable cover plate concealing and protecting saidclosure gplate and said metering means, and a rotary valve in said chamber having a port adapted to register with said inlet passage and alternately with said spaced passages.

` 4. In a valve of the character described, a valve I body having a valve chamber for the reception seat and having a port adapted to register with said inlet passageandzalternately with saidfspaced .parte 2. In alvalveof the class described, a-:yalve body having a `chamber for .a rotary lvalve, inlet ,and ,outlet passages communicating with `said vchamber, v.said -valve body having an outwardly yAlpen recess'at .one side ofsaidchamber, a tby-pass :trom said jinlet `passage to said recess, a plurality agi spaced v'passages connecting said recess with said chamber, la removable closure Aplate -for fsaid recess, detachable -means accessible from fthe :exte- .rior of said body for securing said plateover said rrecess, individually adjustable .metering means ,carried by lsaid plate rfor controlling .said spaced passages, and a rotary valve .in-said'chamber hav- ,ing `a port adapted to register -with said `.inlet .passage and-alternately with said spaced ,passages :3. In aivalveof -tlflezclass described, a-Valve-bod-y having a -chamber for rotary valveinlet :and `outlet l.passages communicating withsaid charnber, said .valve body having Aan outwardly l open .recess .at one side of .said chamber, .a ,byepass from fsad .inlet passage .to :said recess, a ,plurality of va .rotary vall', an inlet passage and a plurality `of ports vspaced circumferentially around 'said chamber, an youtlet passage leading from said chamber, an xoutwardly open recess in said body at the outer ends of said spaced ports, a by-pass between said inlet passage and said recess, a removable closure plateffor said recess, separately adjustable metering means carried bysaid plate 'for controlling said spaced passages, and a rotary valve in said'chamber having a port adapted to register with said inletzpassage and `alternately with lsaid `spaced `ports.

5. AIn a valve of thecharacter described, a valve body -hayi-ng ya -valve .chamber for `.the reception of a :rotary valve, .an .inlet passage and a plurality .of ports lspaced .circumierentially yaround. said chamber, an outlet ,passage leading from said chamber, an outwardly open :recess -in said body at the outer ends .of said v.spaced ports, a by--pass between said inlet passage and said recess, a removable closure late for vvsaid recess, means carried yby said plate lfor `controllingfsaid spaced passages, ,and a rotary valve vin saidchamber having .sa port adapted to register with'said inlet passage and valternately with said spaced ports. 6. vA gas cock `comprising a casing having a seat for a rotary valve, inlet and outlet passages leading lfrom .said fseat, a chamber at one side of said seat and opening outwardly, a by-pass between said inglet passage and said chamber, a .plurality -of yports leading from said chamber to spaced points of said valve seat, a removable `clolsure'plate vfor said chamber, separately adjustable `metering pins .,threadedly engaging said closure plate respectively in alignment with said spaced ports and accessible externally vof said chamber for adjustment purposes, and a rotary valvel engaging the seat aforesaid and having a port adapted 1to register :with saidinlet passage and alternately with .said spaced por-ts.

7., A gas 4cock 'comprising .a casing having a vseat for a rotary valve, `inlet and outlet passages .leading -from said seat, a chamber 'at one side of said ,seat andopening outwardly, a Aby-pass between `said rinlet passage and said chamber, a ,pair of substantially'parallel vports vleading. from 'said chamber to gspaced -points of said Valve seat, substantial-ly Iparallel lseparately adjustable nie- `tering pins for controlling said parallel ports, `a common carrier l,for .said metering pins carried -by said casing vand forming .a closure ,plate for ,the chamber aforesaid, said closure plate being removable from said casing, and a rotary .valve engaging :fthe `seat aforesaid and 'having a port adapted Eto register with said inletfpassage and alternately Ywith said spaced 4ports.

f8. .A gas ,cock .comprising ,a casing :havingg'a .seat for ,a rotary valve, inlet and outlet passages,

the outlet ,passage .being in axial .alignment with said inlet passage and said chamber, a plurality of ports leading from said chamber to spaced positions in said valve seat, a removable closure plate for said chamber, separately adjustable metering pins threadedly engaging said closure plate respectively in alignment with said ports and adjustable externally of said chamber, a cap for enclosing said metering pins, and a rotary valve engaging said seat and having a port adapted to register with said inlet passage and alternately with said spaced ports, the construction and arrangement of said chamber, spaced ports and by-pass being such that said spaced ports and by-pass may be formed in said casing by drilling the latter from the base of said chamber before the closure plate and cap are applied to said casing. A

9. A gas cock comprising a casing having a seat for a rotary valve, inlet and outlet passages, the outlet passage extending axially of said seat and the inlet passage extending laterally from said seat, a laterally extending chambered nipple with the chamber thereof opening outwardly, a by-pass between said inlet passage and said chamber, a plurality of ports leading from said chamber to spaced positions in said valve seat, a removable closure plate for the chamber in said nipple, separately adjustable metering pins threadedly engaging apertures through said plate and in alignment respectively with said ports, said pins being externally adjustable to variably restrict said ports, a cap threadedly engaging said nipple to enclose said metering pins, a rotary valve engaging said seat in constant communication with said axial passage and having a port adapted to register with said inlet passage and alternately with said spaced ports, and a latch mechanism for yieldably holding said valve in different positions Where the port therein is in registration respectively with said inlet passage and said spaced ports.

WILLIAM S. KINCAID.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 778,988 Merritt Jan. 3, 1905 1,708,276 Marks Apr. 9, 1929 1,838,870 Roberts Dec. 29, 1931 2,113,027 Kindl Apr. 5, 1938 2,160,358 Harper May 30, 1939 2,160,419 Mueller July 4, 1939 2,299,665 Turner Oct. 20, 1942

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