US1836242A - Gas cock - Google Patents

Description

P. S. HARPER Dec. 15, 1931.

GAS COCK Filed April 4, 1928 [rzuerzr/ y M 75L/ Patented Dec. 1931 uniform' frying heat. And I have provided.

PATENT OFFICE rIIILIrs. HAnrER, oF CHICAGO, ILLINOIS` y eAs cock Application filed .April 4,

This invention consists of a double'gas range cock having two nozzles for use with a double gas'burner, said cock having a particularly advantageos'arrangement of ports therein so as to` provide improved functioning of such burner and cock.

In this invention I have arranged a double burner 'and gas cock wherein in one position of said cock both sections of the doubleq burner are on full, and in deviating from such position in either direction both sections are lowered simultaneously, thus giving a two stops in said cock so that when the turning element is against one stop the :gas flow isI entirelyl `cut off, and when against the otherstop the gas flow to only one section is cut off, the other section being on full. And I have devised ameans of lowering the ame in the latter section alone by turning away from said stop, and without danger of gas being turned inadvertently into the former section, by havinga point wherethe gas supply is entirely cut 0H between the point of full'on for both sections and the point againstthe stop for full on for the one section. r

The object of this invention is to provide a double burner which may be quickly andeasily turned from two sections'burning'to a single section burning.

Another object is to provide a double burner'in which both sections may be turned to a very slow point simultaneously to-give a uniform or frying heat. l

Another object of this invention is to provide a double burner in which theflame may be lowered to the minimum practical point withonly one section burning.

Another object of this invention is to provide a double burner which is simple `in operation. ,c

Another object of this inventipn is to eliminate the need for any indicating means other than the usual stop at the extreme positions 1928. Serial No. 267,223.-

will-be more apparent from the following description and from the drawings, in which-#- Figure 1 is a sectional elevation o a gas cock and burner of the type of this invention;

Figure 2 is a cross section of the cock on line 2 2 of Figure'l; y

Figure 3 is a cross section through the center of the cockon the line 3-3 of Figure 1; and Figure 4 is a front view of three of these cocks on a range showing the operation of the handles to provide the different functions of theburner of this invention.

Referring now to the drawings, a manifold pipe 10 isshown, into which is screwed one end of the gas cock body 11, said end having a passage 12 therein which terminates at the vplugopening 13 in the gas cock body 11 and into which a tapered vplug 14 is fitted, the said plug surface and the bearing surface of the' body member 11 being `ground to form an accurate fitting joint as in the usual gas On the threaded nozzle end 18 there is screwed cap 21 having in` its outer end a centrally placed restrictedy orifice 22. This needle 19 in combination with 'the nozzle cap `21 -forms an adjustable nozzle, and the capI 21` is screwed more or less onto the threals of the nozzle end 18 causing the needle to [enter the orifice 22 if conditions require sc as to throttle this oriiice.

Returning now to the assage 15 in the plug, a passage 23 leads ofi therefrom and of the turning member, so doing away with lout of the bottom of the plug and into a pas- 9 5 the complication and cost ofsuch means as own in my co-pending ,application Serial o. 191,643, filed May a16, 1927, which has resulted in Patent No. 1,707,007 issued March 26, l1929. Q

sage 26 ina nozzle end 27 vhaving a needle 28'l and a nozzle cap 29 with a restricted orifice 30, all of the same construction as the before mentioned needle 19, cap 21 and orice 22 except that orifice 30 is smaller than orifice j end a T handle 48?) by 22 to feed gas to a smaller port area as shown in the drawings. is also very small in area compared to the port areas through the plug, so that except for orifice flow of gas is practically uninipeded when the ports in the plug register even partially with corresponding ports in the casing. IA stopper plug 31 serves to close the. outer end of passage 15, being screwed, pressed, or otherwise securely fastenedto effectively close this passage 15.

The upper end of the plug 14 has an extension 4() which extends through a coil spring 42, and a nut 43 which is screwed onto the body 11 at point 44, the spring 42 in this assembly being compressed by the nut 43 against the shoulder 45 on the plug 14, thus serving to hold said plug firmly seated on the bearing surface 13. A stop pin 4G is pressed into said plug as shown in Figures 1 and 2, and said pin operates againsta projection 47 of the body l1, said projection determining and limiting the number of degrees of possible rotation of said plug 14.

The extension 40 has fastened on the outer 49, said handle being slabbed and fitting into a depression in the handle (not shown) in order to prevent relative rotation of the tw parts.

Referring now to Figure 3, a side passage 50 is drilled into the bearing surface of /the plug 14 so as to make connection topassage 15, for purposes hereinafter to be disclosed.

; As shown, this passage 50 is drilled at more than a right angle to the passage 15, so that full sized passages may be-obtained, and still provide the length of seal y to be hereinafter described.

The nozzle caps 21 and 29 project through an outer shutter 51 and an inner shutter 52, said shutters being fastened to the mixer face 53 by the clamping screw 54. Nozzle cap 21 projects intoa mixing tube 55 and said mixing tube has side passages 56 leading therefrom into the outer burner section 57 which is of'the usual star shape'or any other shape desired and has burner ports 58 in the top` surface thereof after the manner of the usual 'construction of gas range burners. The upper .nozzle 29 projects into upper mixing tube 59 which in turn leads directly `to the boiling burner section 60 which has burner ports 61 in the top thereof. Theseports 61 are spaced in a circlel or otherwise conveniently arranged to provide a small boiling burner or' therein through which the extension 40 pro- The orifice 30, as shown,

means of the stove bolt jects, and said shield has indicating dials 64 thereon'as shown in Figure 4. In this ligure the T handle 48a is shown pointing to the left, which is the oli' position for both burners, while T handle 48?) is pointing upwards giving both sections'of the burner on full, while T handle 48e points to the right where the simmer section alone is burning full. In order to lower the flame for frying in both sections it is only necessary to turn handle 486 in either direction slightly, while to lower the simmer burner to a very low or warming heat it is only necessary to turn handle 48e counterclockwise a few degrees. Placing the handles in the position shown allows the use of a T type handle which for the same spacing of burners on a stove allows turning through more than the 105 degrees which is approximately the practical limit on a cock of standard arrangement with the plug perpendicular to the line of the gas nozzle. It is also obvious that a. lever handle may be used in my construction operating from a point straight upward to a point straight downward through a half turn, and with this possible 180 degree rotation, though less than available with the T handle, there is still permitted the economy and simplification of the cock that my invention provides.

'As to the operation Vof my invention, with Y the T handle in position 48?) as shown in Figure 1, gas may pass to both nozzles through ports 15 and 23, thus giving full burning to both sections.

If now the handle is rotated in either direction somewhat, it may be seen by referring to Figure 3, that passage 12 cuts oi or nearly cuts off when both passages 15 and 23 have a wide opening. consequently the turning of the plug from this position and the throttling of the gas through the passage 12 ,will lower the flame in both sections alike giving a uniform frying heat. Referring to Figure 3 it can be further seen that a quarter turn clockwise to the position 480 will leave passage 12 approximatelyhalf open due to the registering. of passage 50 therewith while passage 15 is fully closed, and consequently gas may pass through this half opening and into passage 23, causing the simmer burnerto burn with a full iiame since a half opening of passage 12 gives substantially a full gas supply to this small burner section, since one half of the area of passage 50 is very much greater than the area ofthe small orifice 30 inthe nozzle 29.

vA counterclockwise turning will throttle this passage 12 registering with passage 50, and in this way the flame of the small section'of the burner is diminished to such a point that the gas may be entirely cut ofi' from said section since the distance y is about 1/64" greater than the distance fc and still greater than distafnce z in Figure 3. There is consequently no danger of lowermg the flame in the small section of the `burner to such an extent that gas `asi will be` aggin turned into the large section without owledge oft the operator, since from the arrangement of ports shown it canl be seen that this small section would be turned entirely out, that is, distance ylwould entirely cover distance a before port 15 would again open. Therefore it isl apparent that `entire burner would go out and have to be relighted, but in practice this does not occur, the movement is madein any reasonable manner, the expansion ofthe gas already in the various passages'maintains the flame on the burner until gas flow through the passage 12 is reestablished. This provision of a seal between two ports both designed to reglster with a single port of gas entrance, said seal y being greater than the dialneter z of said single port of gas entrance, .is an essential part of this invention. y

While I have described more ar less precisely the detailsl of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts and the substitution of equivalents, as circumstances may suggest or render expedient without departing from the spirit or scope of my invention. I claim: 1. In combination, a gas cock and adouble gas range burner, said burner having mixing tubes leading to burner sections, said cock 'comprising a casing with a plug bearing therein, said casing having two gas cock nozzles, each of said nozzles projecting into one of said mixing tubes, each of said nozzles having a restricted discharge orifice therein, said casing having a gas inlet passage therein, said plug having two passages both arrangedv to at least part i ally Aregister ,in` different rotary positions of said plug with said gas inlet passage, a seal between the two said passages in said plug of greater circumferential length than the circumferential length of said gas inlet passage whereby gas flow into both of said passages in said plug is interrupted between the points of partial registering of said two passages with said gas inlet passage, said two passages in said plug having their respectivecentral axes over 100 apart in the bearing surface of said plug. -4

2. In combination, a gas cock and a double gas range burner` said burner having n e in'g tubes leading to burner sections, said cock comprising a casing with a plug bearing.

therein, said casing having two gas cock nozzles, each of sald nozzles projectin'' into one of said mixlng tubes, each of sai nozzles having a-restricted discharge malice therein,

said casing having a gas inlet passage therein, said plug having two passages Vboth `arranged to at least partially register in different rotary positions of said plug with said gas inlet passage, and a seal between the two said passages in said plug of greater circumferential length than the circumferential length ofsaid gas inlet passage, whereby gas iow into'both of said passages in said plug is interrupted between the points of partial registering of said two passages with said gas inlet passage, said plughaving a discharge opening in its bearing surface and said casing having a passage leading to one of said gas nozzles, said discharge opening in said plug.

at least partially registering with said pas-580 therein, said casing having two gas vcocknozzles, each of said nozzles proJectlng Into one of said mixing tubes, eachof said nozzles having a restricted discharge orifice therein, the discharge orifice in one nozzle being larger than that in the other, said casing having a gas inlet passage therein, said' plug having two passages both arranged to at least partially register in different rotary positions of said plug with said gas inlet passage, and a seal between the two said passages in said plug of greater circumferential length than the circumferential length of said gas inlet passage, whereby gas fiow into both of said passages in said plug is interrupted between the points of partial registering of said two passages with said gas inlet passage, said plug having a discharge opening in its bearing surtothe one of said nozzles Vhaving the larger discharge orifice, said discharge opening in said plug at least partially registering with said passage in said casing leading to said nozzles having the larger discharge orifice at a rotary/"position of said plug with the aforesaid seal in said plug totally shutting off the aforesaid inlet passage in said casing.

4. In combination, a gas 'cock and a double gas range burner, said burner having mixing tubes leading to burner sections, said cock comprising a casing with a plug bearing therein', said casing having two gas cocknozzles, each of said nozzles projecting into one of said mixing tubes, 'each of said nozzles having a restricted discharge orifice therein, said casing having a gas inlet passage therein, said plug having two passages both arranged .to at least partially register in different rotary than the circumferential length of said gas inlet passage, whereby gas flow into both of s'aid passages in said plug is interrupted between the points of partial registering of said two passages with said gas inlet passage, each of said two passages in said plug having an area at least four times as great as the area of the smaller discharge orifice in said gas nozzles.

5. In combination, a gas cock and a' double gas range burner, said burner havin mixing tubes leading to burner sections, sai cock comprising a casing with a plug bearing therein, said casing havingtwo gas cock nozzles, each of said nozzles projecting into one of said mixing tubes, each of sald nozzles having a restricted discharge orifice therein, said casin ,having a gas inlet passage therein, said p ug having two passages both arranged to at least partially register in different rotary positions of said plug with said gas inlet passage, and a seal between the two said passages in said plug of greater circumferential length than the circumferential length of said gas inlet passagcfwhereby gas iiow into both of said passages in said plug is interrupted between the points of partial registering of said two passages with said gas inlet passage, said plug having a discharge A opening 1n its bearing surface and said caslng having a. passage leading to one -of said as nozzles, said discharge opening in said p ug at least partially registering with said pas-l sage in said casing leading to one of said gas nozzles at arotary position of said plug where the aforesaid inlet passage in said casing is entirelyjclosed by said plug.

6. In combination, a`gas,cock and a double gas range burner, said burner having mixing tubes leading to burner sections, said cock comprising a casing with a plug bearing therein, said casing having two gas cock nozzles, each of said nozzles projecting into one of said mixing tubes, each of said nozzles having a restricted discharre orifice therein, said casing having a. gas inlet passa e therein, said plug having two passages h arranged to at least partially reglster in different rotary positions of said plug with said gas inlet passage, a seal between the two said passages in said plug of greater circumferential length than the circumferential length of said gas inlet passage whereby gas flow intoY both of said passages in said plug is interrupted between the points of partial registermg of said two passages with said gas inlet passage, said two passagesrin said plug having their respective central axes over 100 apart in the bearing surface of said-plug, and stops limiting the turning of said plug.

7 In combination ,a gas cockfand a double gas range burner, said burner having mixing tubes leading to burner sec-tions, said cock comprising a casing with a plug bearing therein, said casing having two gas cock nozzles, each of said nozzles projecting into one of said mixing tubes, each of said nozzlesv having a restricted discharge orifice therein, said casing having a gas inlet passage therein said plug having two passages both arranged t0 at least partially register in different r0- tary positions of said plug with said gas inlet passa e, a seal between the two said passages in sai plug of greater circumferential length than the circumferential length of said gas inlet/passage, whereby gas How into both of said passages in said plug is interrupted between the points of partial registering of said two passages with said gas inlet passage, said plug having a discharge opening in its bearing surface, and said casing having a passage leading to one of said gas nozzles, said discharge opening in said plug at least partially registering with said passage in said casing leading to one of said gas nozzles at a rotary position of said plug with the 'aforesaid seal in said plug totally shutting off the aforesaid inlet passage in said casing, and stops limiting the turning of said plug.

8'. In combination, a gas cock and a dou.

ble gas range burner, said burner having mixing tubes leading to burner sections, said cock comprising a casing with a plug bearing therein, said casing havlng two gas cock nozzles, each of said nozzles projecting into one of said mixing tubes, each of said nozzles having a restricted discharge orifice therein, the discharge orifice in one nozzle being larger than that in the other, said casing having a gas inlet passage therein, said plug having two passages both arranged to at least partially register in different rotary positions of said plug with'said as inlet passage, a seal between the two said passages in said plug of greater circumferential length thanithe circumferential len h of said gas inlet passage, 'whereby gas ow into bot of said passages in said plug is interrupted between the points of partial registering of said two passages with said gas inlet passage, said plug having a discharge opening in its bearing surface and said casing having a passage leading to the one of sa-id nozzles having the larger discharge orifice, said discharge opening in said plug at least partially registering with said passage in said casing leading to said nozzles having the larger discharge oricefat a rotary position o said plug, with the aforesaid seal in said plug totally shutting ol the aforesaid inlet passage in said casing, and stops limiting the turning of said plug.

9. In combination, a gas cock and a double gas range burner, said burner having mixing tubes leading to burner sections, said cock comprising atcasing with a plug bearing therein, said'casing having two gas cock nozzles, each of said nozzles projecting into one of said mixing tubes, each of said nozzles having a restricted discharge orifice therein, said casing having a gas inlet passage therein,

said plug having two passages both arranged to at least partially register in different r0- tary positions of said plug with said gas inlet passage, a seal between the two said passages in said plug of greater circumferential length than the circumferential length of said gas inlet passage, whereby gas flow into both of said passages in said plug is interrupted between the points of partial registering of said two passages with'said gas inlet passage, each of said two passages in said plug having an area at least four times as great as the smaller discharge orifice in said gas nozzles, and stops limiting the turning of said plug. v

10. In combination, a gas cock and a double gas range burner, said burner having mixing tubes leading to burner Sections, said cock comprising a casing with a plug bearing therein,said casing havlng two gas cock nozzles, each of said nozzles projecting into one of said mixing tubes, each of l'said nozzles having a restricted discharge orifice therein, said casing having a gas inlet passage therein, said plug having two passagesboth arranged to at least partially register in different rotary positions of said plug with said gas inlet passage, a seal between the two said passages in said plug of greater circumferential length than the circumferential length of said gas inlet passage, whereby gas flow into both of said passages in said plug is interrupted bei tween the points of partial registering of said two passages with said gas inlet passage, said plug having a discharge opening in its bearing surface, and said casing having a passage leading to one of said gas nozzles, said discharge opening in said plug at least partially registering with said passage in said casing leading to one of said gas nozzles at a rotary position of said plug where the aforesaid inlet passage in said casing is entirely closed by said plug, and stops limiting the turning of said plug.

Signed atuChicago, Illinois, this 29th day of March, 1928.

PHILIP s. HARPER.

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