US1484805A - Automatic-lighting gas-stove burner - Google Patents

Description

Feb. 26 1924.

J. WHALEN AUTOMATIC LIGHTING GAS STOVE BURNER Filed Oct. 1. 1921 dTdJli JAMES WHALEN, F OMAITIA, NEBRASKA, ASSIGNOR TO OSCAR Ll FORD, OF OMAHA, NEBRASKA.

AUTODIATIC-LIGHTING GAS-STOVE BURNER.

Application filed Gctober 1, 1921. Serial No. 504,655.

To all whom it may concern:

Be it known that l, Janus VYHALEN, a citizen of the United States,and a resident of Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in Automatic- Lighting Gas-Stove Burners, of which the following is a specification.

My invention relates to burners for gas stoves, and particularly to burners provided with means for automatically turning on and igniting the same when a vessel is placed.

upon the grating or support above the burner, and for shutting off the gas supply when the vessel is removed. it is the object of my invention to provide a burner of this class which may be readily applied to gas stoves in place of the burners ordinarily used thereon, without the use of any special connections or fittings. A further object of my invention is to provide a self-contained and self-igniting gas burner of simple, durable and inexpensive construction, and wherein all of the operating mechanism for the automatic valve and ignition is so enclosed or housed that the burner may have substan tially the appearance of the ordinary hand controlled burner.

In the accompanying drawings Fig. 1 is a longitudinal vertical section of a burner embodying my invention, Fig. 2 is a detail horizontal section through a portion of the valve, Fig. 3 is a vertical section on the line 3-3 of Fig. 1, and Fig. l is a horizontal section on the line 47"4: of Fig. 1..

In the illustrated construction the burner proper comprises a hollow metal body 5 having a plurality of tubular arms 6 xtending radially therefrom, one of the arms being merged into the mixing tube 7 which extends horizontally from the front side of the body, and each of the arms having a row of perforations 8 along the upper side thereof. At its front end the mixing-tube has the usual bell-shaped enlargement 9, over the end of which is fitted the sheet-metal cup 10 therein having sector-shaped openings adapted to register with similar openings through the end-plug 11, the cup being rotatable to vary the relation of the openings and thus control the supply of air to the mixing-tube. The plug 11 is secured in the end of the tube by means of radially extending screws 12, and the plug has a central outwardly projecting tubular portion 14 on which is carried a suitable union 13 for connection with a manually operable shut off cock 15, such as is usually employed for gas stoves. It will be understood that the cook 15 is connected with the gas-supply pipe at the front of the stove, in the usual manner. At the inner side of the plug 11 there is a central threaded opening into which is screwed the valve-casing 16. The valvebody 17 is disposed slidably in said casing and is normally seated against the shoulder at the inner end of the as-supply passage 32, being held in the seated position by the spring 18. Said spring is disposed within the casing around the stem 19, the stem extending slidably through the inner end of the casing and being connected with the rod 20, as shown. The rod 20 extends through the mixing-tube 7 to the central portion of the burner, and is pivotally connected with one end of a bell-crank 21, the latter being fulcrumed on a member 22 attached to a plate 23 which closes a central opening in the bottom of the burner-body 5. The second arm of the bell-crank 21 carries at its a roller 2%, and said roller normally engages the lower end of the vertical push-rod 25. Said rod 25 extends slidably through a tubular guide 26 which is screwed into the recessed upperportion of the burner-body 5. The upper portion of the bore of the guide is enlarged to form a packing-space 27, and is threaded at the upper end to receive the gland 28. Above said gland, on the upper end of the rod 25, a knob or head 29 is secured by means of a small set-screw 30, the head being adjustable vertically upon the rod to the extent necessary to properly position the same with relation to the grating 31 which is disposed above the burner in the usual manner for the support of cooking vessels and the like. Then in proper adjustment, the head 29 extends slightly above the upper surface of the grating, so that when a vessel is placed thereon the pushrod 25 will be pressed downwardly thereby. The downward movement of the push-rod tilts the bell-crank 21 about its fulcrum, thus causing the same to pull upon the connecting-rod 20 and move the valve-body 17 inwardly from its normal seated position. Upon removal of the vessel from the grating the valve is returned to its seated or closed position, being actuated by the spring 19 which serves also, through the described connections,'to lift and'norm'all'y hold the push rod infits raised position.

When the valve is opened as above-described, gasfrom-the-passageBQ flows into the end-portion of the casing 16 and passes laterally into a short lL-shaped tube 33 which is connected with one :side of the plug 11, as best shown in Fig. 2. The end of said tube 33 is directed backward, so* that gas issuing therefromvwill pass through the mixing-tube toward the burner and become mixed with-air therein in the'usu-al Way.

A branch passage 34 extends from the passage 32 as shown in Fig. 1, andcoinmunicates with a small tube 3-5 which extends through the miXing-tube-T'to the central portion 01 the burner and turns up wardly to communicate with the pilotfrom the pilot-burner.

the annular chamber through a tube'89 ex burner 36. The latter is-disposed inan annular chamber which is "formed aroundthe guide 26 w1thin'the guard ringfifithe latter being secured to'the uppercentral portion ofthe burneryas shown. Said'annu- 'lar chamber is covered by a cap for hood 38'which is clampedbetween the gland 28 "and the upper end'o'f thevguide '26, the depending flange of the hood extending slightly below the upper edge ofthe guardring but being spaced therefrom --to provide a free outlet for the combustion products Air is supplied to -tended up through" the burner from the bott'oni-plate28. The normal supply of gas the "tothe pilot is controlled by an adjustingvalvewhich is forniedby a small screw 40 -havin'g a cone-pointed end adapted to enter-the vertical portion of the passage 34: as shown in Fig. 1, whereby to restrict the passage as desired, and to so limit "the supplyto the pilot that the same'will con sume merely the minimum amount of gas necessary to remain constantly lighted. The horizontal portion of "the passage 34 is "intersected by avertical passage 41 "of which the upper "end is closed by a plug 42, and the lowerend enters the valvecas- 'ing 16. W hen the main valve 17 is opened -supply of gas to thepilot is augmented *by'flow thereto through the auxiliary passage 41 which is not restricted by the adjusting-screw 4:0. The 'passages'are so proportioned that the 'augmentedsupply of gas delivered to the pilot burnerupon the open -ing of the main valve is *suflicient to-cause a jet of flame from the "pilot "to be projected through an opening 43 in the side of the guard-ring 87, whereby to promptly ignite the gas emerging from the perforations 8 of the main'burner. The'volume vof iga's supplied to the {main burn'er'may be controlled by the cock -15 in the usual way.

it will be seen that the burner provided by i my invention-may be readilyappliedto the gas stoves now in common use by the mere removal of the ordinary burners and the substitution of my burner therefor there the device maybe thesame as that e't the ordinary burners. The pilot burner is so enclosed as to be "Gil'eCti'Vely protected,and is not likely to be extinguished by drafts or by materials spilled upon -theburner from cooking vessels. The operating parts "are few in number and of relatively simple structure, and in consequence thereof are inexpensive to manufacture, and are subject to a minimum of Wear when in usegtlius insuring durability of the device in -operatingcondition. V V V Now, having described iny invention, what 'l claim and desire to secure by Letters Patent is In a gas stove burner, a burner bodyj having a mixing-tube --extending horizontally therefrom and a housing at the uppercentrail portion of the 3 bo'dyfsaid housing hav- I lng a lateral opening, a hood disposedover "the housing in spaced relation thereto and having =a=depending marginal flange extending below the upper edges-of thehousing a gas supp'ly pipe connected with the miningtube, a main -'v'a'lve controlling admission o f gas from said supply pipe tothe mixingtube, "a "spring normally holding said "1112MB valve-in -close'dposition, a verticallymovable push-rod extending through the hood and housing into the burner-body, means inclosed Within the burner-body and mixing tube and connecting "the push-rod *and m-ain valve whereby -to open the latter when the .push-ro"d is depressed, -a pilot-burner i1iclosed by the housing and hood "and adapt ed to direct a flaine-jet tli-rough the lateral opening "of the housing, a tube extending "front-said-pilot burner through the mixingtube "to the gas-"supply pipe valve "for "regulating the normal "to the Jpilot b'urner, and mean's "controlled how of gas by the main valve for increasing the how of gas to 'the pilot-burner when the mainvalve is opened. v v

WHALEN.

*adj'usting-

Images