US1822794A - Safety gas valve - Google Patents

Description

Sept. 8 1931 w. D. ANTRIM 1,822,794-

SAFETY GAS VALVE Filed Jan. 28, 1931 2 Sheets-Sheet 1 .ZJwQu 1215i we 6.

Sept. 8, 1931. v D. ANTRIM 822,794

SAFETY GAS VALVE Fiied Jan. 28, 1931 2 Sheets-Sheet 2 Patented Sept. 8, 1931 WILLIAM D; ANTRIMQOlF GLOUCESTER, NEW JERSEY, T; ROBERTS GtMANDiE-R STOVE COMPANY OF. PIIIEAD'EI'JEHIA, PENNSYLVANIA, A GORBQRAI'ION OF PENN"- SYLVANIA SAFETY GASL- VALVE A pplita-tion' 'filed January 28, 1931'. Serial- No. 511,845.

object ofimy invention lSytOPIOVldG a valve which controls the floiw of gas to the oven. and to. thebroiler of a gas range so as to prevent accidents due to the accidental flowingoii; gas to one hurnerwhengas1 is flowing and ignited at: the otherlonrner; This object attain. in, the following manner, relierence being had to the accompanying drawings,,in; which: 1

Fig. I is a plan: view of my improved combination gas; valve illustratingmy invention;

Fig. 2 is a sectional; view on; the line 22, Fig. 1;

Fig; 3,is-, a diagrammaticview showing'the locking platemoved" so as to: allow the valve tobe; turned to perm-it gas to flow to the rightshand passage as shown by. dotted lines in. Fig. 1, orin reverse direction to stop, cutting oft gas tobo-thburners;

Fig.4 is a similar view toiFig. 3,.show1ng the locking platelowered, allowing the valve to be turned to permit gas toflow through the left-hand passage and closing the right-hand passage;

Fig. 5' shows the locking plat-e accidentally raised and in a position in respect to the lugs on the valve stem, so: that said lugs-will-return the plate to the position shown. Fig. 4 when the gas valve is turned to shut the v aulett-hand sicleofthe valv -3. a

Fig. 6' is a view showing the looking plate in 1nid-position, locking the valve against movement in, either direction;

Fig; 7 is a detachedperspectiveview of the valve;

Fig. 8 isa detached plate; V

Fig. 9, is: afront view of sufficient of a gas range tosh-ow'theimprovedi gas: valve located back of the front panel of the range, the panel having; a slot'therein to expose, an indicator plate; and I Fig; 10 is. a sectional View on the line 10*10, Fig, 9.. q i

1.. is. the casing of, the valve structure. 2,. is

view of the indicator a valve, This valve is tapered in the present I instance as shown. in Fig. 7,. and is held to. its seat by a spring 3. bearlng upon a washer l, which: rests againstthe casing, and a head5 which, is a.v continuation otthev lve stem.

6; is the valve stem, having a handle 7; of any type desired. The valve casing is; cut away at; 8-,. forming stops 9*and'10f0r the pin 2'1 on the valve 2,,Fig. The stop 9 limits the movement of the valve when in. position, to open the:right-hand-passage 1-1 in the valve casing, andthestop 10 limits the movement of the valve when; theleft-hand passageslQ/ is open... 13 is thegas inlet nipple, whichis threaded as shown in Fig. 2' and; is adapted to be connected; to the gas manifoldof' the range.

Qnthe valve stem 6. are two lugs 14:-1-4 a, diametrically opposite each other; Pivoted at 15 to an extension'16 of the valve casingis a locking plate 17,. havinga handle 18. The locking; plate can loe moved either into an upper" position, a, lower position, or a central position, and is fri'ctionallyheld. in the position to. which it is adjusted by means of a spring 19, which bears against the back oat a projection 20- of the valve casing, Fig. 1. Other means of providing friction for this plate, maybe usedwithout departing from the essential features:oftheinvention.

The plate has an opening 21 therein, and this opening islnade as shown in Fig. 3, the portion. 22 of the opening being less in. Width than the main portion 21 of" the opening, forming abutmen-ts 2'3 and 24 for the lugs-114 ofthe valve stem, and the walls of the portion of the opening 22 providingcarn surfaces25 and: 26, which when the plate is. accidentally moved out of. position,.one orthe otherot. the lugs 1t'1 la. when thevalvestemis turned will return the plate to the position to which it was adj usted. The faces-oi? the steps 23 and 24; are at; right angles to. a line drawn through the pivot 15 of the plate, and} the sides of the lugs 14.-14;a; are undercut onthe same lines, and this construction: tends to prevent the accidental movement of'the plate. If: it is desired to allow gas: to flow through the righthand gas passage 11 in the valve casing, thenv the plate, is raised to the position shown in Fig, 3', and the valve stem is free to turnin the direction of" the: arrow (Fig. 3), until the pin 27 on the valve; strikes the stop 9' when the; connection between the inlet. opening and the passage 11, is full open. To turn off the gas, the valve is turned in the opposite direction until the stop 14a strikes the abutment 23. Then if it is desired to move the plate 17 so that the left-hand passage will be open to the inlet 13, theplate is moved to the low position shown in Fig. 4, the stop 2 L preventing the movement of the lug 14 opposite to the direction of the arrow, Fig. 4, but will allow the valve stem to bemovedin the direction of the arrow until the pin 27 on the valve strikes the stop 10 of the valve casing. Then the'passage 12 will be full open and the passage 11 will be closed and the plate will lock the valve stem so that it is impossible to open the passage 11 while the passage 12 is open. If the plate 17 is accidentally raised, as in Fig. 5,

then the lug 14a will strike the cam surface 26 of the portion 22 of the opening and will return the plate to the low position as illustrated in Fig. 4. The same operation takes place when the plate is in the raised position, as shown in Fig. 3, and is accidentally lowered. Then the ing 14 will strike the cam surface 25 of the opening 22 and return the plate to its raised position. lVhen the plate is in the mid-position, as shown in Fig. 6, the

lugs 14.14a will rest against the stops 24 and 23, respectively, and lock the stem from moving in either direction.

By the above description it will be seen 'that I'provide a very simple and efi'ective safety device forthe gas valve controlling the flow of gas to the burners of the oven and the broiler, the device being located di- -rectly at the valve so that the plate can be readily adjusted to direct the gas to the 'proper channel.

i In Figs. 9 and 10 I have shown my iniproved'gas valve located back of an apron of a gas range. 28 is the top of a range. 29 is the front plate, and 30 is an apron extending from the top plateto a point below thenianifold and gas valve. The stem 6 .7 of the gas valve extends through an opening in the apron30, the handle 7 being on the outer side of the apron.

The handle 18 of the plate 17 extends through a slot 31 in the apron. In order to indicate clearly the position of the valve, an indicator plate 32 is securedto the plate'17 as shown in Figs. 1 and 8,and on this plate 32 are the words Broil and Bake? The slot 31 in the apron 30 is preferablyelongated.at

'. top and bottom as at 33 and 34, to expose the words on the plate 32 when the plate '17 K is in a given position, indicating the position of the valve. For instance, when the plate is raised, then the word Broil is exposed in the slot, and when the plate is lowered the word Bake 1s exposed in the lower portion ofthe slot. The design of apron is immaterial and can be made in many different ways. It will be understood that while I have shown the slot for the handleelonthe first-mentioned direction.

gated at its upper and lower end, independmovement of the valve, so that when the plate is in one position, one passagecan be opened and the valve Wlll be locked against opemng the other passage, and when the plate is moved to its other position the other passage can be opened and the valve locked against opening'the first-mentioned passage.

2. The combination in a valve structure having two outlet passages and an inlet passage therein; a valve controlling the flow of gas to said passages from the inlet passage,

said valve having a stem; a handle on the stem; two lugs on the stem; and a plate pivoted to the valve structure and having stops thereon, said plate being arranged to be moved, so thatone of the lugs will strike one stop and when the plate is moved in the opposite direction, the other lug willstrike the other stop. 7

3. The combination in a valve casing having an inlet passage and two outlet passages,"

of a valve controlling the flow of the gas from the inlet passage to either one of the outlet passages; a stem on the valve; a handle on the stem; diametrically opposite lugs on the stem; a plate pivoted to the valve casing between the handle and said casing landhaving an opening therein; two stops on the plate, the stem extending into the opening; and two diametrically opposite lugs on g the stem within the opening in theplate, the parts being so arranged that'when the plate is raised the valve can be turned in one direction and stopped when turned in the "opposite dire'ction,l and when the plate is lowered the valve can'be turned in the oppo-" site direction and stopped from turning n 4. The combination in the casing of a was valve structure havinga central inlet :opening and two side outlet passages, of a valve controlling the flow of gas from theinlet opening tothe outlet passages; a pin on the valve and stops on the valve casing; a valve stem and a handle, the stem having diameth rically opposite-lugs; and a plate located between the casing and the handle and pivotally mounted on the casing, said plate havmg an opening through which the stem and its lugs extend, the opening having a reduced portion forming stops. and camsurfaces so that whenftheplate is r'aisedone stop will form an abutment for the'one lug and when the plate is lowered the other stop will form an abutment for the other lug, and when the plate is accidentally moved from the position to which it is set, one of the lugs will act upon the cam surface of the plate and return the plate to its set position.

5. The combination in a valve casing having an inlet opening and two outlet passages, of a valve controlling the flow of gas through said passages; a stem on the valve; a handle on the stem; lugs on the valve stem; and a plate pivoted to the casing and having an opening therein and two stops, one for one lug and the other for the other lug, the face of each stop being on lines at right angles to the lines drawn through the center of the pivot of the plate, the sides of the lugs being undercut on the same lines so that they will interlock with the stops on the plate.

6. The combination in a valve casing having an inlet opening and two outlet passages, of a valve controlling the flow of gas from the inlet opening to the outlet passages; a pin on the valve and two stops on the valve casing for limiting the movement of the valve; a stem on the valve; lugs on the stem; a plate pivoted to the casing and having an opening therein through which the stem and its lugs extend; stops on the plate extending into the opening to limit the movement of the stem; a spring secured to the plate; and a lug on the casing, back of which the spring lextends so as to frictionally hold the plate in the position to which it is adjusted.

7. The combination in a valve casing having an inlet opening and two outlet openings, of a valve controlling the flow of gas from the inlet opening to the outlet passages; stops on the casing; a pin on the valve, limiting the movement of the valve in either direction; a stem on the valve; diametrically opposite lugs on the stem; a handle on the stem; and a plate pivoted to the casing and having a handle by which it is moved, the plate having an opening through which the stem and its lugs extend, the opening having a reduced portion forming two stops and two cam surfaces, the stops limiting the movement of the valve to a quarter turn in one direction or the other, according to the location of the plate, so that when the plate is raised the gas will flow from the inlet opening to one outlet passage and when the plate is lowered the gas will flow from the inlet opening to the opposite outlet passage, and when the plate is accidentally moved from its said position, one of the lugs will strike the cam surface on the plate and return the plate to its said position.

8. The combination in a gas range having baking and broiler burners, of a gas valve common toboth burners, the casing of the valve having an inlet passage and two outlet passages, one passage arranged to be connected with a baking burner and the other passage arranged to be connected to a broiling burner; an apron on the range back of which the valve casing is mounted; a stem thereon; and upper and lower slots in the apron so arranged that when the stop plate is raised a word will be exposed through the upper slot, and when the stop plate is lowered another Word will be exposed through the lower slot.

9. The combination in a gas valve adapted for use in connection with a baking oven and broiling oven, of a gas range, said casing of the valve having two outlet passages connecting with the baking burner and the broiling burner respectively; an apron back of which the valve casing is mounted; a stem on the valve extending through an opening in the apron; a handle on the end of the stem; a plate through which the stem extends forming a stop to limit the movement of the valve, so that when one valve is open the other is closed; a handle on the plate; a vertical slot in the apron through which the handle extends, said slot having a longitudinal elongation at its upper and lower end; and an indicator carried by the plate and having the words Broil and Bake thereon, the word Broil being exposed through the upper elongation of the slot when the plate is moved in one direction, and the word Bake exposed through the other elongation when the plate is moved in the opposite direction.

WILLIAM D. ANTRIM.

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