US1652524A

US1652524A - Heater lighter

Info

Publication number: US1652524A
Authority: US
Publication date: 1927-12-13
Anticipated expiration: 1944-12-13

Description

. Dec. .13, 1921.

1,652,524 F. A. GAUGER Er A1.

HEATER LIGHTER Filed June 13. 1924 5 Shet-S-Sh6e 1 Frank/KE aunar HD5/W. Jmhn nn @3 wif@ Dec. 13, 1927.

F. A. GAUGER r-:T Al.

HEATER LIGHTER Filed June 13. 1924 s simens-sheet 2 FrenkA EaunEr Ruy W Jnhnsnn* Wag/771%@ Dec. 13, 1927. 1,652,524

` F. A. GAUGER ET AL HEATER LIGHTER Filed June 13, 1924 5 Sheets-Sheet 5 Dec'. I13, 1927.

F.A. GAUGER `ET AL HEATER LIGHTER Filed June 1s. 1924 5 Smets-Sheet 4 Y /Lwmm 6pm M MJ 9| 4 ,/kJ. d f my www? TNR .fw/wx Y Q Dec. 13, 1927.

F. A. GAUGER ET AL HEATER LI GHTER Filed J=u=ne 15. 1924 5 Sheets-Sheet 5 H@ v y@ w '14 ",(wdew 0%/ FPankA EauuEP Rmy Wflmhnnn a Patented Dec. 13, 1927.

UNITED STATES PATENT OFFICE.

FRANK A. GAUGER .AND FOY W. JOHNSON, OF MILWAUKEE, WISCONSIN, ASSIGNORS TO TIME-O-STAT CORPORATION, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

HEATER LIGHTER.

Application led June 13, 1924. Serial No. 719,797.

lThis invention relates to certain new and i useful improvements in heater lighters and is more particularly directed to an appliance adapted for use in connection with water heaters of that .type generally employed to suppl water to a household, although it may e employed in connection with any type of device utilizing a fuel burner.

A consideration `of major importance in connection with heating devices adapted to be controlledfrom a `remote point is that Jpositive means be provided to prevent the opening of theV burner fuel supply in the event the pilot becomes extinguished. This is essential as, with the pilot-extinguished,

should the burner be connected withv its source of fuel supply, the escaping of the fuel would become a serious menace to life and property. Having this in mind, one of the objects of our invention is to provide a heater lighterfwhich is so designed and constructed as to positivelyI prevent the manipulation of the fuel supply while the pilot is extinguished.

Another object of this invention resides in the provision of a device of the character described which is supported from the casing of the heater to which the sam-e is connected and which is capable of being readily secured in position without necessitating special fittings and other expensive attachments.

This invention has for another of its objects to provide an improved pilot device of the character described, the heat of which directly controls an auxiliary control valve adapted to disconnect the lsource of fuel from the burner independent of thegmain control valve in the event the pilot should become extinguished. i

Another object of this inventionfresides in the provision of a gas passage having two -5 controlv valves therein, one controlled by theimo'static means adapted to be influenced by theheat of the ilot and the pther by mechanical means. t e former providing 'a safeguard 'and being open only :whileuthe pilot isburning.

A further object of this invention resides in the provision of a device of the character described in which the burner fuel supply is held open for a predetermined period of time.

And a still further object of this invention resides in the provision of an improved timing element adapted to be connected withv the control valve proper to secure the same in openposition for any set period of time.

With the above and other objects in view which'will appear as the description pro- 60 ceeds, our invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such 55 changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claims.

In the accompanying drawings, we have illustrated several complete examples of the 7 physical embodiment of our invention constructed according to the best modes we have so far devised for the'practicalapplication of the principles thereof, and in which:

Figure 1 is a. cross sectional view of a dwelling, illustrating one manner of installing our improved device;

Figure 2 is a front plan view of one of the p time control instruments Figure 3 is a view, partly in section and partly in elevation, taken through Figure 2 on the Aplane of the/line 3 3;

Figure 4 is a view looking at the rear of the instrument, the backi plate thereof being broken away in order to illustrate structural details;

Figure 5 is a fragmentary, View, partly in section and partly in elevation` taken through-Figure 3 on the plane of the line Figure 6 is a top plan view of the fuel control nechanisml'and pilot-light, thesame being attached to a water heater, but a frag. ment of which is shown;" p

" Figurev 7 is a view, partly in section and 95 partly in elevation, taken through the burner fuel control on the plane of the line '7-7 of Figure 6;

Figure 8 is a sectional view therethrough on the plane of the line 8 8 of Figure Figure 9 is a fragmentary perspective view illustrating the manner of transmitting the contraction and expansion of the pilot tube to the auxiliary sluit oi or fuel safety valve;

Figure 10 is a view similar to Figure 7 illustrating a slightly modified structure for transmitting the contraction and expansion of the pilot tube to the auxiliary valve;

Figure 11 is a view, partly in section and partly in elevation, taken through Figure 10 on the plane of the line 11-11;

Figure 12 is an enlarged View, partly in section and partly in elevation, taken through the adjustable connection between the rod carried by the pilot tube and the lever for actuating the auxiliary or safety valve;

Figure 13 is a view of still another modiiication of our invention illustrating its adaptation to what is termed in the art as a storage heater, a portion of the storage tank being broken away;

Figure 14 is a view, partly in section and partly in side elevation, taken through that form of our control illustrated in Figure 13 onhe plane of the line 14--14 of Figure 15, an

Figure 15 is a view, partly in section and partly in rear elevation, taken through Figure 14 on the plane of the line 15'-15.

This appliance may be readily divided into two devices or instruments, one the l timing device or instrument illustrated in Figures 2 to 5, inclusive, and the other the fuel controlling device or instrument proper illustrated in Figures 6 to 15, inclusive. Both of these devices or instruments are interconnected, as illustrated in Figure 1, except in the application of the invention depicted in Figures 13, 14 and 15, when the timing instrument is eliminated.

The fuel control device in the present embodiment, is mounted adjacent the water heater 10, which may be of any design or construction having a casing or housing 11 in which is mounted a water coil 12 and a burner 13, the coil 12 being disposed above the burner and having its ends. connected with a hot water storage tank 14 of conventional design.

The burner fuel control comprises a casing 15 havinga fuel vpassage therein which is divided into two

chambers

16 and 17 connected by a assage 18, the chamber 16 being connecte with a source of fuelsupply by a suitable pipe or conduit 19 and the chamber 17 being connected with the burner 13 by a pipe or other conduit 20. The casing 15 is rigidly secured to the housing 11 of the heater y a bracket member 21 which is,

The entrance of fuel from the conduit 19 into the casing 15 is controlled by a normally closed valve V which may or may not be of a construction similar to that illustrated in Letters Patent No. 1,417,510, granted us May 30, 1922. This valve comprises a sleeve plug 27 which is threaded into the casing with its inner end 28 interrupting the connection of the fuel inlet 19 with the chamber 17. The plug 27 is provided with a central bore which is restricted at a medial point 29 through which a valve stem 30 passes carrying a valve head 31 on its inner end for normally closing the inner end of the central bore. A plurality of ports 32 are formed in the wall of the plug 27 in register with the gas inlet so that inward movement of the stem 30, against the action of a spring 33` confined between the head 34 on the outer end of the valve stem and the shoulder formed by the restricted portion of the central bore, connects the fuel supply conduit 19I with the chamber 17, as will be readily obvious. The passage of fuel from the chamber 17 to the burner through the conduit 2() is controlled by a valve V similar to valve V.

Leading from the inlet is a by-pass 35 which is connected with a bore 36 in the casing into which the inner end of a tube 37 is threaded, the outer end of the tube mounting a tip 38 forming a pilot burner. The tube 37 and tip 38 are preferably formed of metal having a high coetiicient of expansion and a flat plate or heat radiating fin 39, against which the pilot flame 40, indicated in Figure 7, burns, is formed on the tips outer end.. The tube 37 and the shank of tip 38 pass through registered openings 41 in the flange 25 and the housing 10 which are preferably of reater diameter than that of the pilot shan to permit unrestricted eX- pansion and contraction of the tube 37 under influence of the heat transmitted thereto by the pilot light. As illustrated in Figure 7, the inner end of tube 37 is held against.

rotation in the bore 36 b a pin 42.

Positioned within the tube 37, and extending throughout substantially the entire length thereof, is a rod 43 preferably of material having a low coeilicient of expansion. One end of the rod 43 is pinned or otherwise secured to the tube 37 adjacent the pilot tip 38, by a pin 44 and the other end thereof passes through the wall of the casing 15 and is connected with means for actuating the valve V. y v

In that structure illustrated in Figures 6, 7 and 9, the outer end of rod 43 passes through a plate member 45 secured, as at 46, to the flattened face 47 of the casing 15 and through a valve operating arm or lever 48 adjacent one of its ends. Adjustably secured on the outer end of rod 43, by an adjustable -nut 49, is a Washer or plate member 50 hav-l ing a pair of spaced, diametrically aligned points or knife members 51 on its inner face which pivotally engage in diametrlcally opposed notches 52 in the outer face of the lever 48 adjacent the point Where rod 43 passes therethrough. The inner face of the lever 48 is provided with a -pair of spaced, diametrically alined notches 53.y the plane of Whlch 1s parallel with, but spaced slightly to one side. the plane of notches 52. The notches 53 pivotally receive pointed projections or knife members 54 formed on the plate 45 to pivota-lly mount one end portion of the lever 48A between plate 45 and Washer 50.

vThe free end 55 of lever 48 has a rounded tit 56 on its inner face Which engages the head 34 of valve V, the valve spring 33 maintaining an outward tension on the 'lever 48. The alignment of the recesses or

notches

52 and 53 is such that when the tube 37 is contracted, spring 33 maintains the end 55 of lever 48 in an outward position and valve V will be closed. Expansion of tube 37 under influence of heat from the pilot flame 40 moves the end 55 of lever 48 against spring 33 to open the valve, the distance between the parallels of the

notches

52 and 53 multiplying the expansion and contraction of the tube 37 sufficient to aord full opening andclosing of valve V.

The volume of gas supplied the pilot flame 40 isreadily regulated by a needle valve 57 of conventional construction having an adjusting screw 57 conveniently located. The actuation of the valve V ymay be regulated by adjusting the nut 49 or'by varying the distance tube 37 is threaded into the bore 36. Pin 42 prevents disturbing the setting of the tube 37, as will be. readily apparent.

If desired, a suitable'packing 57" may be provided Where the innerv end of rod 43 passes through the vcasing 15, although it is not essential that this joint be tight as a hoodor cover 58 is provided which encloses the exterior'portion of the valve V and the mechanism. for actuating the same. This casing is secured to the flat surface 47 of the casing 15 and made fluid tight by a suitable packing' Washer 59. v v

The valve V is adapted to be manually manipulated by a bell-crank 6 0 secured at apex between a pair ofspaced lugs or ears' 61 formed on the housing 15,*by a cotter pin or other pivot member 62. The short arm 63 o-f the^bell-crank is preferably rounded to engage the head 34 of valve V and move the same inwardly against the spring 33 When the outer end of the long arm 64 of the bellcrank is raised. The outer end of the arm 64 is Weighted, as at 65, to normally retain Varm 63 out of engagement with valve head va cable 68 having one end connectedv with the arm 64 at a medial point 69 by a contractile spring 70, and its other end connected with asuitable timing mechanism or device T for holding arm 64 in raised position opening valve V. After a predetermined interval, the device T releases the cable 68 and-the Weighted end of arm 64 drops to disengage the arm 63 from the valve head to permit the closing of valve V.

Each device T comprises a casing or housing 47 1, having lateral securing lugs or ears 7 2 for facilitating its mounting. j A plate or baseI member 73 closes the under side of the casing and journaled in the lower portion of the casing in

bearings

74 and 75 carried by the casing 71 and plate 73, respectively, is a shaft 7 6 on which is secured a disc 77 carrying an eccentric' pin78. The shaft 76 projects through the casing 71- and is provided With an indicator or pointer 79 and an actuating handle 80, the point-er 79 registering with suitable indications On and Off delineated on the outer face of the casing to indicate the position of the valve V.

One end ofcable 68 is securedto a grooved member 81 rotatably mounted on pin 78 and lWhen the indicator' 79 is in its off position, pin 78 is in'its lower-most position. The on position, as illustrated by dotted lines in Figure 5, is to one side of an imaginary line drawn perpendicularly through the axis of shaft 76, so that upon release of the disc 77, as hereinafter described, Weight 65 quickly returns the bell-crank to normal position quickly closing valve V.

Secured to theplate 73 is a clock movement comprising a main spring arbor 82 similar in construction to the spring arbor illustrated in Letters Patent Number 1,150,514,

1915, and Letters Patent Nul rv 1,239,955.,`.

granted Joseph W.I Gibn-eyugust 17,n

Wheel 85 through a train of gears 86. As

the construction of the main spring arbor,v andthe clock mechanism proper forms no part of our invention, with the exception of the means for imparting an initial movement to the escapement wheel and the means for actuating the release mechanism by the nain spring arbor, detailed description thereof is deemed unnecessary.

Pivoted tofone of the pillars 87 connecting the front and rear movement plates 88` and 89, respectively, and the base plate 73, is a dog or .detent 90 of substantially triangular shape having a corner or shoulder 91 adapted' to engage behind a stop 92 in the form of a lip or lug struck from the disc 77 to secure the disc in its on position illustrated in Figure 5. The dog or detent constitutes a trigger member and the disc 77 and its lip or stop 92 constitutes a cooking member.

The other end of the detent 90 has one end of a link member 93 connected therewith by a pivot 94, the other end of said link member having av longitudinal, elongated slot 95 therein pivotally receiving a crank pin 96 carried-on the outer free end of a crank member 97 secured to the main spring arbor 82. The detent has its free end normally urged downwardly to position its shoulder 91 in the path of the stop 92 by a spring 98, the medial portion of which is coiled around the pillar 87 to which the detent is pivoted, as at 99, one end engaging an adjacent pillar 87 and the other end passing through an opening 100 in the pivot pin 94.

The main spring arbor 82 passes outwardly through the casing 71 and carries an indicator or pointer 101 and a winding handle 102, a 'dial 103 being formed on the outer face of the casing and cooperating with the pointer 101.

Stops

104 and 105 are carried by the casing 71 to engage the pointer 101 and limit the winding and unwinding of the main spring, stop 104 restricting the unwinding movement. The dial is suitably graduated, starting from zero adjacent stop 104 and in the. drawing the dial is lcllivided into divisions of five minutes eac s In Figure 1 is illustrated an installation of our invention in which two time controlling units T are employed, one being positioned in the kitchen and theother yin the bath room to permit the actuation of the valve V' from eitherof these two points. Then two time controlling units are employed, as illust-rated in Figure 1, the extra unit has its cable 68 connected with the cable 68 of the other unit,as at 106, and as will be readily apparent either timing unit may be turned on.

To operate the heater burner 13 for a predetermined period of time, as for example thirty minutes, the operator turns the handle 102 of either of the devices T in a counter-clockwise direction to "aline the pointer 101 thereof with thedesignationmO on the dial 103. This permits spring 98 to drop the shoulder 91 of detent 90 in the path of the bell-crank at all times maintains a tension on the cable 68 while the valve V is held open and, as the spring 84 of the timing device T unwinds, detent 90 is gradually raised against the action of spring 98 by the crank member 97 carried by the main spring arbor, as hereinbefore described. By the time the indicator 101 reaches-the Zero designation on the dial 108, detent shoulder 91 will have cleared the path of stop 92, when the weighted end G5 of the bell-crank lever quickly drops the bell-crank lever and permits the instant closing of valve V. If the pilot light 40 is out at the time handle 80 is turned to bring the indicator 79 to its on position, suitable protection is afforded against connecting burner 13 with its source of fuel supply by the valve V previously described.

Should it be desired to shorten the time interval burner 13 is connected with its supply, handle 102 may be rotated in a clockwise direction to any intermediate point or to the Zero point, in the manner described in the Letters Patent aforementioned.

In order to assure the starting of the clock mechanism each operation of the device, a flat spring 108 is secured to a lug 109 struck from the disc 77 with its outer free end adapted to wipe a gear 110 on the shaft 111 lof the escapement wheel 85 as the disc is rotated to insure an initial kick to the escapement wheel and eliminate any possibility of the clock movement not startinof.

In Figures 10 to 15, inclusive, slight y modified constructions of our invention are illustrated in which the valve V is held open by' 'a spring acting on the lever 48 and closed by the contraction of the tube 37 working through the rod 43 against the action of the spring. In thisl form of our invention a substantially U-shaped bracket member 112 is secured to the flattened surface 47 of the casing 15 and provided with extensions '118 onz the upper end thereof having pointed prongs or knife members 51' which engage in spaced diametrically opposed notches 52 in the lever 48. A collar member 114 having pointed prongs or knife members 54 pivotally engaging in openings 53 in the opposite face of the lever 48 cooperates with the bracket member to mount the lever 48.

The lever 48 is apertured, as at 115, adjacent its

pivot openings

52 and 53 and a sleeve 116 is disposed therein, through the bore of which passes an adjusting screw 117 having its inner end threaded in the collar 114, and adapted to be engaged by the outer end of the rod 43.

The free end of lever 48 is urged inwardly to valve opening posit-ion by a spring 118, the medial portion of which is engaged about a pin 119 connecting the sides of the U-shaped bracket 112 to compress one end against a pin 120 connecting the sides of the bracket 112. The other end of ythey spring is provided with a tit 121 which engages in the depression formed in the lever by the tit 56 to normally urge the lever free end 55 inwardly and hold the adjusting screw 117 against the outer end of the rod 43.

With this construction it will be obvious that, with the pilot 1i ht 40 'burning and tube 37 expanded by t e heat thereof, the outer end of rod 43 moves inwardly from collar 114 which follows due to the action of spring 118 opening valve V, spring 118 being stronger than the valve spring 33. Contraction of the tube 37, upon extinction of the pilot'light, causes rod 43 to extend outwardly through the casing 15, moving the end of the lever 48 outwardly against spring 118 to permit closing of valve V by the spring 33. i

As the operation of this form of our invention is identical with that previously described, with the exception of the specific manner in which the pilot light operates the valve V, further description thereof is deemed unnecessary.

In Figures 13 to 15 is illustrated a slightly modified form of our invention especially designed for use with a hot water storage heater, where it is desired to' maintain a constant supply of hot water-in the tank 14. In this type of heater, the timing mechanism is eliminated and the master valve V actuated from a thermostatic member 122 extended into the storage tank.

The master valve V is located at a point remote from the valve V, and is rovided with a valvecasing 15 having an lnlet 123 and an outlet 124 to permit its connection in the gas supply 19. The lcontrolvalve proper may be ofk any desiredaconstruction and is interposed between 'the inlet and outlet of the casing'fland connected with the thermostatic member 122so that, in the event the temperature of the Water lwithin the tank falls .below a` predeterminedr ydegree` it is openedto connect the fuel supply with the burner through the valve V and in the event that the temperature of the water rises above` a predetermined degree the master valve is closed. As the valve-V may be similar 1n side of valve V by a by-pass or conduit 125 in which is positioned a suitable adjusting valve 126. The adjusting valve takes the place of the needle valve 57 for regulating the pilot flame as will be readily obvious.

The construction of the valve V and its operation is substantially identical with that described in connection with Figures 1 to 12, inclusive, withthel exception that the spring for returning the valve to closed position is eliminated and in its stead a fiat spring 126 is provided which is secured to the lever 48 and has its outer end 127 bifurcated for insertion in a groove or channel 128 in the outer end of a vplunger' 129 carried by the outer end of the valve stem. The Hat spring 126 compensates for any over movement of thelever 48 upon the cooling of the thermostat by the extinction ofthe pilot and thus insures the proper closing of the valve V and prevents any possible damage.

While the foregoing description describes our invention as applied to water heaters of what is termed in the art as the instant-aneous and the storage heater types, it will be readily obvious that the same may be applied to any other type of heater device or may be adapted for use wherever it is desired to provide means for lighting a burner or where it is desired to provide a pilot light having means to guard against the connectween the projections moves the outer free end of the lever, a valve member controlling the flow of fuel through the fuel passage, the free end of the lever coacting with the valve member, whereby movement of the 'lever controls the valve member, and thermally controlled means for producingfrelative moveg ment between the pointedv projections.' f

2. A device of the character described, comprising a casing having a fuel passage therein, a pointed projection carried by the casing, a movable member having a pointed projection extended toward the first mentioned pointed projection'to one side of an'- imaginary line drawn therethrough, a lever having one end pivotally mounted between the pointed rejections whereby relative movement in a ongitudinal plane between the projections moves the outer free end of the lever, a valve member cont-rolling the flow of fuel through the fuel passage, the free end of the lever coacting with the valve member, whereby movement of the lever controls the valve member, thermally controlled means for producing relative movement between the pointed projections, and means for adjusting the normal position of the lever.

3. A device of the character described, comprising a casing having a. fuel passage therein, a pointed projection carried by the casing, a collar member having a pointed projection extended toward the other pointed projection but on a different plane, a lever aving one end free and its other end pivoted between the pointed projections, whereby relative longitudinal movement between the pointed projections moves the free end of the lever, a valve member controlling the How of fuel through the fuel passage, movement of the free end of the lever controlling `the valve member, a rod engageable with the collar member, and thermally actuated means connectible with said rod member for shifting the same to cause relative movement between the pointed projections and move the lever to actuate the valve member.

4. The combination with a heater having a housing with a fuel burner therein, of a casing having a fuel passage provided with an outlet and an inlet, means connecting the inlet of the passage with a source of fuel, means connecting the outlet of the passage with the burner, a valve controlling the iiow of fuel through said passage, a tube of materiaLhaving a relatively high coetlicient of expansion, one end of said tube being fixed to the casing and the other end thereof being passed into said housing adjacent the burner, means connecting the outer end of said tubing with the source of fuel, a pilot tip on the end of the tube adjacent the burner, the fuel supplied said tube burning in a pilot flame at said tip` and the heat thereof being thermally conducted to the tube to expand the same, a rod of material having a relatively low coefficient of expansion, means securing one'en'd of said rod with the tube adjacent its end in the housing, and means connected with the other end of said rod whereby the valve opens when the tube is expanded by the thermal influence of the pilot light and closes upon extinction of the pilot light and the consequent contraction of the tubeto normal length.

5. The combination with a heater havinga housing and a fuel burner therein` of a casing having a fuel passage therein provided with an inlet and an outlet, means connecting the outlet of the passage with the burner,

means connecting the inlet of the passage with a source of fuel, a valve controlling the iow of fuel through the passage, a tube of material having a relatively high coefficient of expansion, one end of said tube being connectible with the source of fuel and the other end thereof being passed into said housing adjacent the burner, means connecting the first-mentioned end of the tube with a source of fuel, a pilot tip on the end of the tube adjacent the burner, a radiating iin extended from the pilot tip, the fuel supplied the tube burning in a pilot light at the tip and the heat thereof being thermally conducted to the tube to cause its expansion, a rod of material having a relatively low coefficient of expansion, means securing one end of said rod with the tube near its end adjacent the burner, and means connected with the other end of said rod for actuating said valve upon the contraction and expansion of the tube under the thermal influence of the pilot light. v

6. A device of the character described, comprising a casing having a fuel passage therein, a valve member, spring means normally urging the valve member to a position closing the fuel passage, a valve opening member, spring means of greater strength than the spring means of said valve member and normally urging the opening member to actuate the valve against its spring means, and means operable to move said opening member against its spring means to permit closing movement of the valve.

7. A device of the character described, comprising a casing having a fuel passage therein, a valve member, spring means normally urging the valve member to a position closing the fuel passage, a valve opening member, spring means of greater strength than the spring means of said valve member and normally urging the opening member to actuate the valve against its spring means, a pilot burner, and thermally actuated means associated with the pilot burner operating upon extinction thereof to move said opening member against its spring whereby the valve member is moved to closed position by its spring means.

8. A .device of the character described, comprising acasing having a fuel passage therein provided with an outlet and an inlet, means connecting the inlet of the passage with a source of fuel, means connecting the outlet of the passage with a burner, a valve controlling the flow of fuel through the passage to the burner, a lever, means pivotally mounting the lever at one end, means resiliently connecting the free end of said lever. with the valve, a tube of material having'a relatively high coeilicientof expansion and having one end connectible with the fuel supply, the fuel entering the tube burning in a pilot llame at the other end lill lll.;

! traction of the tube due to extinction of the pilot swings the free end of the lever to close the valve. Y

9. The combination with a gas burner and housing therefor having an aperture therein adjacent said burner, of a gas appliance comprising a casing having a passage therethrough, al spring-actuated Valve in said passage foropening or Vclosing the same, a pilot burner carried by said. casing, thermo-responsive means associated with said pilot burner, means interposed between said thermo-responsive means and said valve for rendering the operation of the latter dependent upon that of the former, a bracket attached to said casing at one end and adapted for attachment to said burner housing at lts other end to operatively position said pilot burner in .said aperture with reference to said main burner, said casing having inlet and outletV openings for connecting said passage with the gas supply and said main burner respectively and an inlet opening for connecting said pilot burner with said supply, a second valve mounted in said passage on the supply side of said first Valve, and means for operating said second valve -including a lever pivot-ally attached to said bracket and manually operable to open said valve.A p

10. A gas appliance of the character described comprising a casing having a fuel passage therein, a spring-actuated valve in said passage, a pilot burner, thermo-responsive. means associated with said burner, and means interposed between said thermo-responsive means and said valve for automatically controlling the operation of the latter to permit opening thereof during ignition'at the pilot and to prevent openin in the event the pilot should be extinguishe said means ctnnprising a lever coacting with said valve and suspended between offset fulcrums, one of the latter being movable by said thermo-responsive means. l

11. A gas appliance of the character described comprising a casing having a fuel passage therein, a spring-actuated valve 1n.

said passage, a pilot burner, thermo-responsive means associated with said burner, and means interposed between said thermo-responsive means and said valve for automatically controlling the operation of the latter to permit opening thereof during ignition at the pilot and to prevent opening in the event the pilot should be extinguished, said means comprising a lever coacting with said valve and suspended between offset *fulcrums, one offsaid' fulcrums being fixed to said casing and the otherl being connected to said thermo-responsive means for movement thereby, whereby the free end of said lever is swun in one direction by said thermo-responsive means, and Ameans for swinging said lever in the opposite direction upon release of said means.

12. A gas appliance of the character described comprising a casing having a fuel passage therein, a spring-actuated valve in said passage, a pilot burner, thermo-responsive means associated with said burner,

means interposed betweenv said thermo-responsive means and said valve for automatically controlling `the operation of the latter to permit opening thereof during ignition at the pilot and to prevent opening in` the event ,the pilot should be extinguished, said means comprisingY a lever coacting with said valve and suspended between offset fulcrums, one of said fulcrums being iixed to said casing and the other being connected to said thermo-responsive means for movement thereby, whereby the free end of said lever is swung in one direction by said thermo-responsive means, means for swinging said lever in the opposite direction upon release of said means, and means foradjusting one of said fulcrums.

13. A gas appliance of the character described comprislng a casing having a fuel passage therein, a spring-actuated valve in said passage, a pilot burner, thermo-responsive means associated .with said burner, means interposed between said thermo-responsive means and said valve for. automatically controlling the operation of the latter 'to permit opening thereof during ignition at the pilot and to prevent open-- ing inthe event the, pilot should be extinguished, said means comprising a fulcrum in the form of a bracket fixed to said casing, a second fulcrum offset with reference to the iirst and bein in the form of a collar connected to said t ermo-responsive means for movement thereby, and a lever suspended between said fulcrums and coacting with said valve.

14. A pilot burner controlled thermostatic gas cuto comprising a casing having a passage therein, a valve in said passage, a pilot burner, thermo-responsive 'means associated with said burner, a rod actuated by said means, a fulcrum fixed to said casing, a sec-l ond fulcrum carried by said rod and disposed adjacent the first but offset with respect thereto, and a lever suspended between said fulcrums at one end and coacting with said valve at the other.

15. A ydevice of the character described comprising a casing having a fuel passage therein, Aa valve controlling the iow of fuel through vsaid passage, spring means cooperable with the valve to close the same, and means for controlling the opening of the valve including a lever having one end cothe valve.

16. A device of the character described comprising a casing having a fuel passage therein, a valve controllino` the flow of fuel through said passage, a pilot burner, spring means cooperable with the valve to close the same, and means for controlling the opening of the valve including a lever having one end eooperable with the valve, a spring urging said lever to a position wherein the valve is open, and thermostatic means exposed to the heat of the pilot burner and cooperable with the lever to swing the same to provide for closure of the valve.

17. The combination with a main burner,

f a casing therefor and valve-controlled means for supplying the same with fuel, of thermostatic means for regulating said valve-con` trolled means, said thermostatic means including a tube having a relatively high co'- eiiicient of expansion, said tube being located exteriorly of the'casing and having a tip at its inner end projecting into the casing and adapted to be played upon by a pilot light, and means for utilizing the expansion and contraction of said tube for governing said valve-controlled means.

18. The combination with a main burner and a casing therefor, of valve-controlled means for supplying the burner with fuel, and thermostatic means for regulating the valve-controlled means, said thermostatic means including a member having a relatively high coeilicient of expansion and located exteriorly of the casing for the major portion of its extent and having a tip at its inner end projecting into the casing and adapted to be exposed to the action of a pilot light, and means for utilizing the expansion and contraction of said member for governing said valvecontrolled means, said valve-controlled means and said thermostatic means being of unitary construction and being located externally of the casing, and a single bracket having an apertured portion secured to the casing, the member of the thermostatic means extending throu h said apertured portion, said bracket havmg its' outer ends secured to the valve-controlled means for supporting the same.

In testimony whereof we aliix our signatures hereto.

FRANK A. GAUGER. ROY W. JOHNSON.