Abstract: Gas range with at least one burner covered by a glass ceramic plate, wherein the burner has a gas cock and a timed-ignition and monitoring device, such that the output of the burners is adjustable. A gas cock is used with plugs rotatable between a high and a low position with the aid of a knob and a knob shaft, with a spindle connected to the knob shaft, with a valve plate under the gas inlet opening in the plug housing, with a microswitch for the ignition device and with the use of an electromagnet under the valve plate, in the area of the gas supply connection of the further housing. The knob with the knob handle and the spindle is pressable against the action of a return spring in the high position of the plug. This way, the microswitch for the timed ignition device becomes actuatable and the valve plate becomes pressable on the electromagnet against the action of a return spring, thereby opening the combustion gas inlet opening.

Abstract: A portable apparatus for warming a cup and its contents has a fuel reservoir connected through a valve controlled by a snap switch to a combustion cage. A thermocouple under the combustion cage returns the snap switch to an "OFF" position, cutting off the flow of fuel, once a predetermined temperature has been reached.

Abstract: A gas stove burner including: a preheating body which encompasses so as to directly contact a preheating tube; a housing with a stepped seat, an inner cylindrical wall, and an air mixing tube which opens into a cylindrical chamber between the cylindrical wall and the stepped seat. The stepped seat has a number of inner stepped rings and at least one outer ring for even heating.

Abstract: A cooking appliance includes an elongated heat source, which may be a gas burner tube. The elongated heat source is mounted for movement in a horizontal plane perpendicular to the longitudinal axis of the heat source, and a driving arrangement is provided for reciprocating the heat source in the horizontal plane.

Abstract: A gas burner having at least one continuous annular gas delivery nozzle in a top plate of its head. The top plate forms part of a cap-like upper member supported by a dish-like base member, the two forming between them a gas chamber. The gas chamber accommodates at least one insert plate which has a boss extending upwards into an opening of the top plate to form with the rim of the opening or with the annular boss of another insert plate an annular gas delivery nozzle.

Abstract: A spark ignition safety system for a gas barbeque. The system comprises an external electrode secured to the bottom of the grill and positioned in proximity to a portion of the lid so that when the spark generator is actuated, a spark will be generated only externally when the lid is closed and only internally, through the normal internal spark generating electrode near the gas burner element, when the lid is open. The spark ingition safety system in accordance with the present invention minimizes the chance of the gas barbeque blowing up or catching on fire when an operator attempts to light the barbeque by manipulation of the spark generator without lifting the lid.

Abstract: In a supply system for gas burners, preferably included in a cooker top, gas is supplied to each burner via a separate gas conduit provided with a valve. The gas conduit is supplied from a main conduit which is part of the cooker top and is connected to a gas mains. The gas conduits are contained in an elongated channel, preferably made of metal. The channel is arranged so as in succession to pass all burner positions as well as an area where the valves are situated. Via a coupling each valve is connected to the main conduit and to its respective gas conduit which via a corresponding coupling is connected to the burner.

Abstract: A heater system is provided for use with a downdraft range. The heater is constructed and disposed within a burner pan associated with the range to produce a non-uniform heat output relative to the front-to-rear center line of the burner pan. The greater heat output is produced adjacent a side wall of the burner pan which is substantially opposite the air inlet of the proximity ventilation system.

Abstract: A space heater which is generally rectangular in shape and which has a chamber inside which is generally square in cross section. This square shaped chamber has inlets along the bottom thereof and outlets along the top thereof. An improved burner assembly is disposed centrally on the bottom wall of the chamber housing and includes a vertically extending conduit having an opening in the top thereof. A first square plate is attached to the top of the vertically extending conduit and the first square plate is disposed generally horizontally and has a round opening in the center thereof for allowing a fuel and air mixture to exit therethrough. The first square plate has upwardly extending flanges on each edge thereof for directing flames upwardly and causing the flame to be of the same cross sectional shape as the chamber. A second square plate, smaller than the first square plate, is disposed just above the first square plate and is also horizontally disposed.

Abstract: A gas fired radiant griddle assembly employing a series of perforated ceramic tiles to define a burner surface positioned beneath the griddle. The center area of the assembled ceramic tiles is blocked off so as to define an annular burner surface to minimize the temperature gradient across the griddle surface and the hot combustion effluents are drawn by convection beneath the griddle surface and out the rear corners of the combustion chamber beneath the griddle to heat the peripheral and corner portions of the griddle and further minimize the temperature gradient across the expanse of the griddle.

Abstract: A poultry brooder having a ceramic radiant element with protrusions and protrusion connectors forming spiral channels to lengthen the path of flowing gases from the closed center to the edge of the radiant and to impede the gaseous flow by turbulence. An insulator reduces undirected heat loss through the rear surface of the ceramic radiant and an electronic direct spark ignition system conserves fuel consumption and makes the brooder more reliable.

Abstract: A gas burner construction is porvided which is completely free of any upwardly facing horizontal plane surfaces. This burner construction is especially adapted for cooking food with an open flame since there are no surfaces on which drippings may collect and cause flare-ups.

Abstract: A gas cooking appliance is provided which is operable with interchangeable burners. An appliance housing includes a burner box mounting an upwardly facing non-removable burner pan. A gas supply system includes gas valves arranged to provide gas to inlet fittings having orifice hoods mounted on the burner pan with the orifice hoods and burner pan being adapted to interchangeably receive first and second burners. A proximity ventilation system has an exhaust intake adjacent the burner pan and a motor driven blower for inducing airflow into the exhaust intake. A first switch is mounted on the burner pan and is operated by only one of the burners. A second switch is associated with the gas valves and is in circuit with the first switch. The switches are cooperable on operation of the gas valves to provide automatic blower operation with only one of the first and second burners.

Abstract: A gas distribution system is provided for a cooking appliance having housing structure defining a substantially confined control chamber. A gas manifold structure is utilized which includes first and second spaced apart surfaces joined by a peripheral wall member. The gas manifold structure provides for mounting a plurality of gas valves in a closely spaced cluster arrangement within the confined control chamber.

Abstract: A flat burner is provided, for household appliances, having a burner body (2) with an axial gas delivery passage (4) housing a gas injector and with a cap (8) resting on the body (2) through an annular ring (9) having flame orifices (12), an annular transversal convergent-divergent system being defined by the annular surface (11) of the body (2) bordering the passage (4) and the opposite surface (10) of the cap, in which: the diameter (D.sub.E) of the passage (4) is D.sub.E =D.sub.c .multidot.K.sub.3 with K.sub.3 =1.10 to 1.43 and D.sub.c =the diameter equivalent to that of the venturi of the convergent-divergent D.sub.c =D.sub.i .multidot.K.sub.4 with K.sub.4 =12.5 to 22 and D.sub.i =diameter of the injector for butane gas; the angle (.alpha.) of the convergent-divergent system is between 3.degree. and 8.degree.); the length of the divergent system is ##EQU1## with D.sub.1 the outer diameter of the ring; and mechanical means are provided for setting the diameter D.sub.c as a function of the gas used.

Abstract: A gas stove including at least one burner, a gas supply conduit for supplying gas to the burner, a solenoid valve in the gas supply conduit, a sensor for detecting the presence or absence of a utensil on a burner and a control circuit responsive to the sensor to open the solenoid valve when the utensil is on the burner and to slose the solenoid valve when the utensil is off the burner.

Abstract: An adjustable gas intake assembly between the burner element and the gas inlet nozzle for a barbecue grill which can be utilized with various types of gas barbecue grill burners. A venturi tube portion and a supply tube portion are connected by threaded, flexible portions which will provide horizontal or vertical ajustment of the supply tube. The gas intake assembly can be utilized in conjunction with either a front control type barbecue grill unit or a post type. In one embodiment, a slidable tube member provides an additional telescoping section with the threaded, flexible portions.

Abstract: The present invention provides a uniformly-heated heating chamber for a barbecue grill by mounting two U-shaped burners within that heating chamber so the arms thereof extend toward each other to help define a generally rectangular annulus which surrounds the middle of that heating chamber and which is displaced inwardly from the walls of that heating chamber. Gas-emitting ports are provided in the inner and outer faces of the arms and ends of those burners; and hence a central area of burning gas and a generally rectangular surrounding annulus of burning gas are provided by those burners. As a result, burning gas fills substantially all of the length and width of the heating chamber to provide uniform heat across that length and width.

Abstract: This invention relates to a barbecue grill, and in particular to a high pressure gas fired barbecue grill having perforated ceramic heating elements which emit infrared radiation. A pair of steel rods are suspended in a cast aluminum housing, and a pair of plenum chambers are suspended therebetween. The upper surfaces of each plenum chamber comprises a pair of perforated rectangular ceramic blocks separated by an imperforate metal plate. The bottom of the housing is open, and has a tray carried proximate the opening for food particles.

Abstract: An adjustable dual gas mixing assembly specifically configured for use with a dual burner gas grill including a burner element having at least one pair of gas supply ports formed therein, the adjustable dual gas mixing assembly comprising a pair of flexible gas supply tubes disposed in spaced relationship relative to each other secured to the burner element in open fluid communications with the gas supply ports and a corresponding pair of rigid mixing tubes rotatably disposed within the corresponding flexible gas supply tube, each flexible gas supply tube including a corresponding mounting plate formed thereon to secure each flexible gas supply tube to the burner element and each rigid mixing tube including an annular flange formed on the inner end thereof and at least one air aperture formed on the outer portion thereof such that each flexible gas supply tubes may be deflected laterally and each rigid mixing tubes may be adjusted longitudinally relative to the corresponding flexible gas supply tube.

Abstract: An improved ceramic burner plate for gas combustion which is made from a composition comprising about 30-40 weight percent of a clay, about 3-8 weight percent of talc, about 25-40 weight percent of a pore-producing substance and about 14-36 weight percent of mullite. The ceramic burner plates of the invention are characterized by excellent fire resistance and long service life.

Abstract: A flame insert for reducing the NO.sub.x emissions of a range top burner is disclosed. The flame insert comprises a rigid framework provided by disjuncted support members connected to a pair of ring members. The support members engage the burner head to mount and accurately position the ring members adjacent the burner ports for engaging the flames during combustion and reducing the peak flame temperature by radiating heat energy away from the flames.

Abstract: A gas supply manifold has upper and lower sheet metal walls defining a gas supply passage extending to an annular chamber defined between concentric openings within the walls. A gas burner unit mounts on the manifold and has concentric inner and outer walls defining an annular chamber which connects with the annular chamber in the manifold. A drawn sheet metal fitting engages a shoulder within the burner unit and includes a downwardly projecting tubular portion having a corrugated cross-sectional wall configuration defining helical candelabra threads. A drawn sheet metal nut has an upper flange portion projecting outwardly from a tubular portion having a corrugated cross-sectional wall configuration defining candelabra threads mating with and engaging the threads on the fitting to secure the burner unit to the manifold.

Abstract: A gas burner assembly includes a metal burner body with main burner ports formed in a sidewall containing an internal fuel chamber. An electrically conductive burner top member overlies the burner body. The top member and body are electrically isolated from one another and are spaced apart to define an ignition gas pathway extending from the internal chamber to an ignition region above the main burner ports. A spark ignition circuit includes a spark gap in series circuit relationship between the burner body and the top member. Fuel supplied to the fuel chamber flows through the ignition gas pathway, is ignited by sparking at the spark gap and in turn ignites fuel flowing from the main burner ports.

Abstract: A gas-fired cooking range having a powered combustion air and gas input; proportional turndown burner control irrespective of the number of burners being used or the degree of turndown of any burner; light-weight jet impingement/radiation members being provided on each burner for efficient heat transfer to utensils and a simplified ignitor/sensor system for all burners operable by any individual burner control.

Abstract: In a gas range assembly, the gas burners are releasably held in the range top, gas being supplied to the burners by way of nozzles mounted in the burner box immediately below and spaced from the respective burners.

Abstract: A closed top pulse combustion burner for a flat cooking surface. The burner comprises a shallow rectangular box-like combustion chamber with its top providing a cooking surface area. Pulse combustion operation of the burner promotes high thermal efficiency. An internal baffle arrangement in the burner box provides a high degree of temperature uniformity at the cooking surface. The rectangular configuration of the burner unit allows modular construction of multiple burner units which can be individually operated at different times and/or temperatures.

Abstract: A gas burner for a domestic cooking apparatus comprising a gas feed tube, a mixing tube and a burner cover near the outlet of the mixing tube. An outlet member is provided in the form of an apertured flow plate which is connected to the gas feed tube in sealing relationship by way of an intermediate flexible ring. By exchanging the flow plate the burning capacity can be changed at the site of use.

Abstract: A gas burner assembly for a barbecue grill which can be utilized in a wide variety of gas barbecue grill base portions. The burner element is of a generally tubular construction with telescoping hollow body members extending from a central body member in opposing directions. A gas intake member is in fluid communication with the hollow tubular body member, and a plurality of apertures are distributed over the body members. In a preferred manner, the telescoping body members have adjustable screws for locating the telescoping body members in various positions from the central body member. Also preferably, the telescoping burner members also include adjustable leg members so as to firmly position the telescoping hollow body at various positions along the floor of the barbecue grill base.

Abstract: A cooking station for gas ranges whose burner works with super-stoichiometric combustion air premixing. The burner head arranged in a burner tray is connected with a mixing pipe via a ceramic insulating ring. Between the burner head bottom and the burner head lid with the flat topside, we have two perforated flame opening rings which are arranged concentrically with respect to the burner axis, which are resistant to heat and which are resistant to oxidizing and reducing atmospheres. The perforation of the inner flame-opening ring is so dimensioned that the flames cannot backfire. Below the burner tray there is arranged a reflector. The cooking station can be covered with a glass ceramics plate. The invention achieves stable flame performance, perfect combustion, and waste gas poor in harmful substances at nominal load and at small adjustment heat load within a vast utilization field of gases with differing Wobbe indexes as well as a start-up cooking efficiency improvement compared to known burners.

Abstract: A stove for supporting cooking pans and vessels that have rounded or spherical bottoms has three spaced uprights having their upper ends inclined inwardly toward each other. The three uprights are preferably spaced about a heat source and preferably have their upper ends terminate in a single horizontal plane.

Abstract: An alignment device for use with a dual burner gas grill including a pair of gas supply tubes affixed to a burner element each having a venturi tube telescopingly disposed therein movable between an extended and retractable position, the venturi tubes being disposed in substantially parallel spaced relationship relative to each other, the alignment device comprising a base plate attached to the periphery of the venturi tubes including an alignment element inclined inwardly relative to the longitudinal axes of the venturi tubes to engage each of the dual venturi tubes to maintain parallel relationship relative to each other during movement between the extended and retracted position and a securing element comprising a first locking member coupled to the base plate and a second locking member coupled to the gas supply tubes to selectively engage each other to secure the venturi tubes in the extended position.

Abstract: A gas power burner system is provided for a commercial-size food preparation oven and generally comprises a gas power burner connected in series by a gas supply line to a mechanical modulating valve and an electrical on-off valve. The electrical on-off valve initiates or terminates gas flow to the mechanical modulating valve and the gas power burner. A temperature sensing device disposed within the oven and operably connected to the mechanical modulating valve senses temperature fluctuations and causes the mechanical modulating valve to selectively vary the gas flow rate to maintain the desired temperature within the food preparation oven.

Abstract: A resistance heating element is formed in a spiral pattern to a spherical radius to provide conductive heating for a wok. The resistance heating element is supported by a support which accommodates the spherical surface of the heating element. The heating element can be for either plug-in or permanent installation.

Abstract: A combination microwave and convection oven in which a gas burner positioned outside the oven provides heated combustion products which are drawn from the burner area along with vapor from an outlet of the oven by a blower system and the combined output of the blower system is blown into the oven through an oven inlet region in the oven wall. Both the oven outlets and the oven inlet are formed of holes substantially less than one-half wavelength in diameter. A predetermined portion of the blower output system is blown through an exhaust vent thereby creating slight negative pressures in the oven and in the burner plenum to accurately control the air flow through the burner.

Abstract: A charcoal briquette igniter for use with outdoor grills includes a pressurized fuel gas container and a burner which has a cage that surrounds the orifices to which the fuel gas issues from the burner. An airtight conduit innerconnects the burner and container so that the admixture of air and fuel transpires after the fuel gas has been discharged from the orifices, the cage under such circumstances being adapted to support the briquettes spacedly apart from the orifices and to define a compartment in which the air and combustible fuel gases mix and burn. The fuel container of the igniter is supported by a hanger that is in turn suspended from the wall of the grill brazier, the hanger being adapted to underlie a valve component that is secured to the container and to support the container at the side of the grill through its connection with the valve component.

Abstract: A burner box divided into two chambers by a partition having two orifice hoods and an electrical connector rigidly mounted thereto, the hoods and connector facing into one of the chambers which functions as a compartment for removably inserting a modular gas burner cartridge. The cartridge may include a pan having two burners and an igniter attached therein. The positioning of the cartridge is such that the mixer heads of the burners align with the respective orifice hoods and the igniter couples to the connector. The connector has a recessed entrance for the high voltage receptacle so that a tapered ceramic insulator sleeve of the igniter conductor terminal fits therein.

Abstract: A modular gas operated heating cartridge adapted for inserting into a compartment of a surface gas range. The cartridge includes a pan in which is mounted an igniter and at least one gas burner. When positioned in the compartment, the mixer head of the burner aligns with an orifice hood secured within the compartment. Also, the igniter makes electrical contact with a connector secured within the compartment. The modular cartridge can be removed for repairing, cleaning, or changing the configuration of the range surface.

Abstract: An electric cooking unit, a gas-fired cooking unit, and a burner assembly usable with the gas-fired unit for rapidly grilling food in a controlled manner. The cooking unit includes side walls defining a heating enclosure, a plurality of food holding members supported by top surfaces of the side walls for positioning food within the heating enclosure, a coal grate assembly mounted within the heating enclosure for supporting a bed of refractory coals below the food holding members, and gas-fired or electric heating elements for heating the bed of refractory coals to incandescent temperatures. When the cooking unit is gas-fired, the unit incudes a plurality of individually controllable burner assemblies, each assembly having a flame guard assembly releasably mounted on a tubular member having a plurality of apertures for distributing a cooking gas within the heating enclosure.

Abstract: A key-(touch-) controlled gas range is provided, which consists of touch-controlled flame adjusting means, continuous ignition circuit, burner and valve with multiple channels, so that the flame intensity may be adjusted automatically in a key-controlled manner. A set of memory means is also provided therein so that the flame intensity is instantly changed to a small intensity of the live fire whenever the pot is removed and the flame intensity is automatically returned to the original intensity after the pot is put back thereon.

Abstract: A convection oven in which vapor is circulated through the oven by a pair of counter rotating blowers positioned in the rear of the oven which draw vapor from the oven along with combustion products from a multi-section ribbon burner which has a secondary air passage between the sections and which is positioned below the oven rear wall vapor outlet region and blow the combined vapor and combustion products into the oven adjacent the top surface. The blowers generate slight negative pressure in the combustion plenum by blowing a small portion of the output of the blowers out an output vent to control the amounts of primary and secondary air supplied to the burner system.

Abstract: A gas venturi tube assembly for a barbecue grill which can be utilized in a wide variety of gas barbecue grill burner elements and base portions. The venturi tube and the gas intake member telescope together in the usual manner. However, adjustable securing mechanisms are provided between the venturi tube and the gas intake member so that the gas intake member is in communication with the gas supply pipe irrespective of the placement of the burner element on the floor of the barbecue grill base. The adjustable securing mechanisms include a screw carried by the gas intake member for engagement with the venturi tube which can also have indented dimples or screw threads disposed in the venturi tube and gas intake member.

Abstract: A cooking hob of small thickness for built-in assembly into cabinets, constituted by a box casing in which are disposed one or more gas burners which, with the aid of suitable ceramic blocks, constitute a like number of heat-insulating rigid bridges for connection between the upper drip plate and the lower plate or base of the box casing, and further comprising devices for quick coupling to the cabinet, constituted by a U bracket which encloses a threaded pin, and which during tightening moves from a disengagement position to an engagement position.

Abstract: A stove burner includes heating elements lying on a concave surface when viewed from above so that elements closer to the central portion are at a greater depth than elements towards the outer portion. The heating elements may constitute concentric pipes of decreasing radii when viewed in plan and at successively greater depths from the surface of the stove when viewed in elevation so as to define the concave surface. Alternatively, the heating elements may constitute an electrical resistance element following a spiral path wherein successive spirals are at increasing levels from the top surface of the stove when viewed from the side. The radius of curvature of the concave heating element configuration is made to match substantially the radius of curvature of the bottom surface of a wok (shallow steel pan with handles).

Abstract: The invention provides a plural chamber gas burner for a cooking grill. The burner has an inside space between a top and a bottom. Divider walls divide the inside space into a breather space between two independently operable gas chambers. Breather apertures in the bottom of the burner provide communication between the breather space and the outside of the burner. Ignition apertures are provided in the divider walls near burner apertures in the gas chambers so that gas from an already operating gas chamber will ignite gas of another gas chamber.

Abstract: The piezoelectric generator and the spark electrodes are assembled as an integral unit, the electrodes being at the upper end of the unit and projecting upwardly while the actuating button of the current generator projects downwardly from the lower end of the unit. The unit is movable vertically. When upward pressure is exerted on the button the unit moves to an upper position at which the electrodes are adjacent the gas burner and upon reaching that position continued upward pressure on the button actuates the current generator. When the button is released the unit descends by gravity to a lower position at which the electrodes are spaced away from the flame of the burning gas.

Abstract: A cock apparatus of automatic ignition type for use in a gas appliance including an ignition handle, a valve member disposed within the cock body for rotation with the turning movement of the ignition handle thereby supplying gas to a main burner and a pilot burner, and a spark generator generating sparks for igniting the pilot burner in response to the turning movement of the ignition handle. The cock comprises a rotary shaft capable of free rotation and restrained rotation relative to the valve member and normally urged by a spring to rotate in the closing direction of the valve member, and a heat sensor for sensing ignition and non-ignition of the main burner, the heat sensor being operatively connected to the rotary shaft so that the rotary shaft and the valve member can be automatically rotated in the valve closing direction by the force of the spring in the event of ignition failure of gas or accidental extinction of gas flame burning on the main burner.

Abstract: A method of forming ports in a fuel burner wherein the ports are formed in a single stroke employing a tool having a plurality of punch members arranged in an array corresponding to the configuration of the burner body that may be a complex shape. The burner body and tool structure are supported for relative movement toward and away from each other. The tool structure and body are moved toward one another to form the array of ports in the burner body in a single relative motion. This motion is terminated before the material punched by the tool is severed from the burner body.

Abstract: A gas cooking range of the smooth top type has four burners positioned under a single plate of heat-resistant glass/ceramic material; and a single igniter and safety control assembly is centrally positioned between the burners. The supply of gas to each of the burners flows through an ignition chamber where it is ignited, and it then flows through a combustion tube to a combustion chamber, where combustion is completed. Some air is mixed with the gas at the fuel supply control valve, and additional air is supplied through the ignition chamber. The burning gas mixture then flows through the combustion tube to the combustion chamber at the entrance of which an additional quantity of air is added to provide the remainder of air necessary for complete combustion.

Abstract: A gas venturi tube assembly for a barbecue grill which can be utilized in a wide variety of gas barbecue grill burner elements and base portions. The venturi tube and the gas intake member telescope together in the usual manner. However, adjustable securing mechanisms are provided between the venturi tube and the gas intake member so that the gas intake member is in communication with the gas supply pipe irrespective of the placement of the burner element on the floor of the barbecue grill base. The adjustable securing mechanisms include a screw carried by the gas intake member for engagement with the venturi tube which can also have indented dimples or screw threads disposed in the venturi tube and gas intake member.