Abstract: A convertible door for wood stoves and the like having a central opening therein. A pair of interchangeable panels are provided which are dimensioned to substantially cover said opening; one of said panels being opaque, the other being transparent. Each of the panels is detachably mountable on the rear surface of the door to thereby provide selectively opaque or transparent covers for said opening.

Abstract: A microwave oven has a cooking chamber provided with a microwave window covered by a glass-ceramic plate with the interposition of a seal. A microwave connecting housing adjoins the window externally of the cooking chamber. A microwave generating and guiding device bounds at least in part the space defined by the connecting housing for directing microwave energy into the cooking chamber. Further, an electric resistance heater is arranged in the cooking chamber. There are provided air inlet openings communicating with the space defined by the connecting housing for introducing pressurized air thereinto, whereby an air pressure is generated in the connecting housing for preventing cooking vapors and the like from reaching and soiling microwave generating and guiding components.

Abstract: In a wood burning heater of the type having a relatively large glass window in the side of the heater for viewing the fire within the heater box, a door for shielding the glass window from the fire when the door is closed, a vent for controlling the flow of air to cool the glass and means for opening and closing the door, such that the vent must be open permitting air flow to cool the window in order for the door to be opened.

Abstract: A stove has a firebox for burning solid fuels such as wood or coal, an opening in a side wall communicating with the firebox, a window housing surrounding the wall opening and protruding laterally from the stove, a transparent window pane mounted in the window housing in alignment with the wall opening and through which the interior of the firebox may be viewed, and a door assembly arranged in the window housing between the window pane and the wall opening. The door assembly includes a door having first and second panels, with hinges connecting the lower edge of the first door panel to the upper edge of the second door panel for pivotal movement about a first horizontal axis. Inclined track members extend downwardly along the interior sides of the window housing and inwardly away from the window pane.

Abstract: A microwave oven having a door configured to minimize the leakage of microwave energy is disclosed. The door includes a flat sheet of glass and a flexible metal screen substantially overlying the glass sheet. The glass and the metal screen are held in substantially coplanar relationship in a frame. The edges of the metal screen are deformed such that the mounting of the metal screen in the frame causes the central portion of the metal screen to bow away from the glass. When the door is closed the metal screen conforms to the oven front panel.

Abstract: Microwave oven window having a microwave-blocking screen, an interior plastic film and a pressure-sensitive adhesive layer bonding the plastic film to the screen over the full area of the screen but substantially not penetrating into the openings of the screen.

Abstract: The stove is of the cylindrical firechamber-type having a side loading door for loading wood or other combustible material such as coke or coal into the chamber. The front of the stove chamber may be opened to enable viewing of the wood burning in the stove by means of an arcuate sliding door that is operable to substantially totally close the chamber or open a section of the front thereof for viewing purposes. The sliding door is covered by a shield (window) construction including a tempered glass face. The stove is provided with an open base for supporting the chamber and a shroud covering the top and back of the chamber and preferably having blower means associated therewith. The drafting of the chamber is provided by a side door draft and a top draft extending longitudinally of the chamber.

Abstract: A microwave oven having the control panel mounted on the door. The control panel includes a plurality of pushbutton switches for the user to push to control the speed, time, etc. for variable cooking in the microwave oven. The switches communicate to an electronic controller also mounted on the door. The controller converts user input into signals that control the various operating components of the oven, such as the magnetron. The controller is connected with these components via a flexible printed circuit cable which bridges the space between the door and the oven near or through the hinge area of the oven.

Abstract: A self-contained window unit adapted to be assembled in an oven door. The window unit comprises at least two glass panes held in spaced parallel relation by a channel-shaped spacer having means engaging the peripheral edge portion of one of the panes, and individual clips or brackets mounted on the spacer and having clip portions engaging the peripheral edge portion of the other pane. The clips may be designed to hold third and fourth glass panes in spaced parallel relation to the first two panes.

Abstract: A stove having walls which are shaped and supported to prevent warping thereof. A combustion chamber in the stove is defined by bottom and side walls positioned and oriented to maximize the space available for such a chamber. The walls of the combustion chamber have top caps thereon for ensuring and maintaining the proper positioning of those walls. Further holding elements are included in the stove to maintain the combustion chamber walls in position. An alternative embodiment of the stove includes front opening access doors.

Abstract: An accessory cooking container for toaster/ovens comprises a pan and a cover, the pan having a generally rectangular flat bottom surrounded by upstanding sidewalls and a peripheral flange extending outwardly from the tops of the sidewalls. A lip bounds the perimeter of the peripheral flange. In one embodiment, the cover comprises a flat top surrounded by downwardly extending sidewalls and a peripheral flange extending outwardly from the bottom edges of the sidewalls. The flange is sized to be accommodated within the lip of the bottom, wherein the cover is restrained from sliding off the bottom. The flange of the pan defines a slot through which the flange of the cover may be gripped to remove the cover. The cover is optionally provided with a heat-resistant glass window having high transmissivity to infrared energy mounted in an opening in the top thereof.

Abstract: Microwave oven window comprising two transparent panels, an intermediate microwave-blocking screen and a transparent thermoplastic adhesive filling the space between the panels. The interior panel is very thin and the thickness of the thermoplastic adhesive panel barely exceeds that of the screen. The thinness of the interior panel plus adjacent adhesive minimizes the leakage of microwaves.

Abstract: A stove for burning combustible materials having a fire box at least in part lined with a fire resistant lining and having an opening across a front surface thereof, said opening defined by a hearth and an upper lip and equipped with pivotally mounted door means mounted for rotation within the stove along horizontally disposed axes so that the opening can be effectively closed by rotation of the upper and lower doors into their closed position. The hearth may be equipped with an upstanding transparent panel to permit viewing of the fire when the doors are open. Access to the fire box for insertion of additional flammable materials is provided by a door means positioned at the end of said fire box. Protection for the transparent panel to prevent logs from rolling against it may be provided by elongated means extending across the front opening at or above the rearward portion of the hearth.

Abstract: A fireplace stove includes a sheet metal fire box of octagonal vertical cross-section incorporating on its front side a sheet metal front window assembly including a tempered glass window with a sliding shut-off plate insertably mounted just behind the window and between the glass window and a convection draft area formed by a horizontal draft channel which underlies the front window assembly. A draft slide bar underlies a fixed grill within the front window assembly box frame above the glass window and between the window and the fire box. A motor driven fan supplies air within an air flow passage defined by the backsplash plate vertically mounted to the stove and the rear of the stove to cause forced air flow upwardly between the vertical rear wall of the fire box and the backsplash plate to effect heat transfer by convection and downwardly within an air flow channel defined by the bottom horizontal walls of the fire box to maintain the floor which underlies the fireplace stove relatively cool.

Abstract: A furnace peep sight utilizes a pair of glass plates removeably mounted within passageways of a truncated conical body journaled for rotation and partly mounted within the wall of a furnace. A passageway, useful for sighting purposes, passes through both of the glass plates extending transverse to the longitudinal axis of the body so as to position, in one angular location of the body, one of the glasses inwardly towards the interior of the furnace and the other glass plate located outwardly from the exterior surface of the wall. Further rotation of the body permits the glass plates to be aligned transverse to a sight hole otherwise coaxially aligned the openings in the body.

Abstract: The disclosure herein describes a door for covering the oven cavity of a pyrolytic range, which comprises four spaced panels that define therebetween three air cooling passageways providing an insulating effect; inlet and outlet openings are located in the top and bottom edges of the door to allow air to circulate in the passageways to reduce heat loss through the window sections of the door so that the temperature on the front panel of the door, during the high temperature self-cleaning cycle of the oven, does not exceed the allowable limit. The invention is also concerned with providing a continuous gasket on the front wall of the oven portion of the range to trap air on the sides of the oven and to direct it upwards through orifices leading to underneath the top cooking surface of the oven from where it exits.

Abstract: A self-contained window unit adapted to be assembled into an oven door, having three glass panes and a microwave shield. Two of the glass panes are held in spaced parallel relation by a frame of electrically-conducting material which has a peripheral mounting flange in electrical contact with the edge of the microwave shield. The third pane is secured to the frame by a plurality of individual mounting clips. Fasteners around the four sides of the window unit secure the mounting flange to the door to both mount the window unit and ground the microwave shield.

Abstract: A flame-sensing system for a tangentially fired broiler in which a plurality of scanners are positioned on the side walls of the combustion chamber adjacent respective burners, and oriented to sight the flame from the respective burners, rather than the central fireball. Closely spaced coolant-carrying tubes lining the boiler walls are oriented with at least one tube in a serpentine pattern and with two or three tubes displaced laterally and rearwardly of the flame zone to provide space for a viewing port approximately the width of two tubes. The displacement pattern tends to dissipate the heat load on the scanner port to prevent scanner or boiler case overheating.

Abstract: The disclosure herein describes a door for covering the oven cavity of a pyrolytic range, which comprises four spaced panels that define therebetween three air cooling passageways providing an insulating effect; inlet and outlet openings are located in the top and bottom edges of the door to allow air to circulate in the passageways to reduce heat loss through the window sections of the door so that the temperature on the front panel of the door, during the high temperature self-cleaning cycle of the oven, does not exceed the allowable limit. The invention is also concerned with providing a continuous gasket on the front wall of the oven portion of the range to trap air on the sides of the oven and to direct it upwards through orifices leading to underneath the top cooking surface of the oven from where it exits.

Abstract: A microwave oven door includes a rigid door panel having a frame and hinge effectively bonded to the panel, the frame being supported by the panel. The frame and hinge may be effectively bonded to the panel through attachment to an intermediate structural member which is in turn bonded to the panel. The panel may comprise a glass-metal screen laminate.

Abstract: A microwave oven having an access door comprising a metal door frame with a choke cavity and a perforated metal sheet covering the area inside the frame. The door frame consists of a U-shaped metal profile with the legs of the U oriented in the plane of the door so as to effect an energy seal between the frame and the perforated metal sheet by pressing the sheet against the outside planar area of one of the legs of the profile.

Abstract: A wood burning stove is formed with double front and rear side walls of heat conductive metal interconnected by heat conductive spacer fins and providing air passageways by which room air is heated by conduction from the walls which are heated by the burning of wood deposited on a firebox grate made up of spaced bricks supported by metal holders secured in heat conducting relation to said inner side walls. The rear side air passageway is divided into central and outer vertical sections the central one of which is closed at the bottom end and communicates with the atmosphere through an opening in the outer wall intermediate its vertical ends and with the stove interior above the firebox and below the grate through openings in the inner wall intermediate its vertical ends and adjacent its bottom end, respectively.

Abstract: A windowed oven door for ranges having self-cleaning ovens comprises a system for simultaneously locking the door and raising a shield to cover the window. A linkage mechanism in the shield raising part of the system includes a pair of overcenter link arms which are retained in their past dead center position while the oven door is locked on an oven during its self-cleaning cycle.

Abstract: A cooking apparatus employing a purging device.In the apparatus, an exhaust gas which is produced from food being cooked in a cooking chamber is passed through the purging device and is exhausted to the exterior of the chamber at a temperature of 130.degree. C or at a discharge rate of higher than 0.5 m/sec thereby being purged sufficiently.

Abstract: An oven door has a movable shield for covering its window during a self-cleaning cycle of an oven. The door includes apparatus for automatically raising and lowering the shield to and from a window covering position as the oven door is raised and lowered, improved track system for controlling and guiding the shield movement within the door and improved locking means for locking the oven door shut only when the shield is in its window covering position.

Abstract: An oven door construction including an improved oven door structure and method of forming the same wherein a plurality of viewing panel assemblies are mounted removably to door panel elements defining a hollow door through which air is conducted for cooling aligned front and rear viewing panels of the door construction. The front viewing panel assembly is pivotally mounted to the front panel of the door and may be readily removed therefrom upon removal of a small number of securing elements. The rear viewing panel assembly is mounted to the rear panel of the door and is readily removable therefrom upon separation of the door front and rear panels. The rear viewing panel assembly includes a plurality of mounting clip devices engaging opposed edge portions of the rear viewing panel to clamp the rear viewing panel therebetween.

Abstract: An air cooled and insulated, see-through oven door for pyrolytic self-cleaning ovens including a reticulated metallic heat shield positioned between an inner glazed window pack assembly and an outer glass panel. Such reticulated heat shield has an inner reflective surface facing the oven cavity to assist in retaining heat and a black outer surface facing outwardly to reduce the reflection of outside light for improved viewing of the oven cavity through the door.

Abstract: An oven door assembly for hinge mounting on an oven frame, the door having a glass-sealed window aperture and a shutter manually positionable between an open position permitting view of the oven contents through the window and a closed position preventing thermal radiation from the oven through the window and view of the oven contents. Shutter position indicator means governed by the movement of the shutter to and from its closed position cooperates with sensor means on the oven frame to provide an interlock for the oven heating system such that the heating system is prevented from operating when either the shutter or door is not fully closed. The shutter is disposed within an air wash zone formed by spaced door panels in a manner which permits both sides of the shutter to be cooled by convective air flow to thereby minimize heat transfer to the outer panel of the door.

Abstract: A door construction having a full front viewing panel. An improved structure is provided for mounting the viewing panel in a front frame portion of the door. The mounting structure includes a plurality of resilient bumpers engaging an edge portion of the transparent panel. Retaining clips are provided for retaining the bumpers in securing association with the transparent panel. The frame is provided with recesses for receiving a positioning portion of the retaining elements to effect a desired clamping of the transparent panel by the resilient bumpers. The frame may be secured to the liner of the door by threaded securing elements and the retaining elements may be secured in the door further by the threaded securing elements. The door may comprise a hollow door having top and bottom openings for conducting ambient air therethrough to maintain a desired low temperature of the front transparent panel. The openings may be disposed adjacent the panel mounting elements.

Abstract: The window unit is formed of a frame and of glass sheets arranged in spaced parallel relationship so as to form an air space between adjacent glass sheets; the frame is defined by top and bottom members and a pair of side members. The top and bottom frame members each have laterally spaced longitudinal portions forming channels and individually receive a major portion of the upper and lower marginal edges of the glass sheets.

Abstract: A steam-type fireplace heat-extraction apparatus, including an enclosure for utilizing the heat generated in a fireplace, comprising an isobaric or atmospheric, superheated steam system combined with a unique enclosure, said enclosure comprising a fireplace frame having vertical side members and horizontal top and bottom members, with two novel door structures which are hingedly carried by the fireplace frame. Each door structure comprises double panes of tempered glass disposed in spaced, parallel relation, held by a door frame which extends around the peripheral portions of the panes and confines the same. The door frames have special ventilating holes located adjacent the top and bottom members of the fireplace frame, which enable air from the room to be drawn into the space between the panes and then discharged, to not only provide heat to the room but also at the same time hold the temperature of the glass to a lower value.

Abstract: A heat insulating screen forming a part of an oven or furnace comprising two or more sheets of glass of vitrocrystalline material mounted in facing relationship, one sheet providing one exterior face of the screen having been subjected to a chemical tempering treatment, the other sheet providing the other exterior face of the screen having improved thermal properties which are obtained either by utilizing a borosilicate glass which has a coefficient of thermal expansion of less than 5 x 10.sup.-6 /.degree. C or a sheet bearing at least one coating capable of screening off a significant amount of incident infrared radiation.

Abstract: A self-contained flange mount window unit adapted to be assembled in an oven door. The windor unit comprises a pair of glass panes held in spaced parallel relation by a substantially continuous frame-spacer of integral one-piece construction which is made from an elongated member that is bent to substantially rectangular final form and is retained in final form by a tab at one end engaging a slot at the other end. The frame-spacer has an integral mounting flange projecting laterally outwardly from the top, bottom and sides of the window unit. The window unit is secured to the back panel of the oven door by fasteners which pinch the mounting flange between the air baffle of the door and the clamping surfaces of a plurality of bridge spacer members.

Abstract: Self-contained window units adapted for assembly into an oven door of the type having a vertical air passage for the flow of air by convection through the space between the front and back door panels, the window units having two glass panes, means holding the glass panes in spaced parallel relation and having openings therein defining an air flow passage between the panes aligned with the air passage through the door. Several modifications disclosed show various means of providing for easy removal of one or both of the panes for cleaning.

Abstract: An oven door for cooking ranges of the type provided with a double-glazed window comprised of at least two spaced parallel glass panels, including an outer panel and an inner panel. The door is provided with openings at the bottom and top thereof to permit the circulation of air upwardly through the space between the glass panels. The inner glass panel is preferably mounted in a fixed position in the door, while the outer glass panel is slidably mounted therein in a manner that it can be completely removed from the door through the opening at the top thereof by a simple upward sliding movement of said panel.

Abstract: A windowed door structure for an oven such as used for household baking and broiling functions, for example, which door structure assumes relatively low exterior surface temperatures during operation of the oven by virtue of the fact that the window overlies the window opening and is spaced from the front panel of the door around the window opening so as to provide a substantially dead air space between the window and the spaced underlying panel and rear window.

Abstract: A self-contained window unit adapted to be assembled into an oven door window opening and having means defining an air passage to allow air to flow upwardly through the door and window unit therein. The window unit is mounted on the back panel or liner of the door and comprises a window sub-assembly having a pair of glass panes held in spaced parallel relation. A front glass pane is secured to the subassembly by mounting clips. The mounting clip or clips at the top are constructed so as normally to hold the front pane against upward movement but to permit the front pane to be pressed outwardly for upward removal. The spaces between the clips allow upward flow of air through the door and window unit.

Abstract: A track system for suspending and guiding the movement of a shield to and from a window-covering position in an oven door for a self-cleaning oven when an oven is to be operated at high temperatures to clean the interior surfaces of the oven and the oven door. A linear motion bearing means is provided to suspend the moveable shield by a first end portion within the oven door where the shield moves along the linear motion bearing means to and from a position which covers and shields a transparent pane in an oven door. A second end portion of the moveable shield opposite the first end portion of the shield is free whereby thermal expansion in the moveable shield is accommodated.

Abstract: A ventilated window for oven doors comprising at least two spaced parallel glass panels mounted in a frame surrounding the peripheral edges of the panels, said frame being comprised of spaced glass receiving channels and an integral spacer portion between the channels, the spacer portions at the top and bottom of the window being formed with angled fins or vanes to provide relatively narrow elongated louvers which extend substantially the entire width of the window for directing a flow of cooler air upwardly through the space between the glass panels to replace the hotter air therein.

Abstract: An oven door comprising front and back metal door panels having a substantially rectangular central opening therein to receive a window unit for see-through into the oven compartment. The window unit comprises a substantially rectangular metal frame formed with spaced channel portions connected by an integral spacer portion, the spacer portions at the top and bottom of the frame being provided with aligned slots, and three spaced, parallel glass panels, the inner and outer glass panels being mounted in the channel portions of the frame and the center glass panel being inserted through the slots in the spacer portion. The center glass panel is supported at its lower edge and projects upwardly beyond the spacer portion at the top of the frame into the space between the front and back metal door panels.

Abstract: A door construction provided with a window for use with a conventional baking and broiling oven. The window is formed with two glass panes which are widely spaced apart and are mounted independently of each other so there is no direct heat conductive path between the two glass panes. A dust sealing flange is located just beneath the window opening to reduce the opportunity of air-borne soil to reach up between the two glass panes.

Abstract: An oven door comprising front and back metal door panels having a central opening therein to provide a window for see-through into the oven compartment. A window unit is mounted in the window opening and comprises inner and outer transparent glass panels mounted in spaced, parallel relation in a common supporting frame. The inner glass panel is fixed in said frame while the outer glass panel is removably mounted therein. Means is provided for releasably securing the outer glass panel in said frame such that it can be readily removed for replacement or for cleaning the inner surfaces of the panels without disturbing the inner glass panel, the supporting frame, or the oven door proper.

Abstract: A generally cylindrical casing is hollow, and is supported by a base so that the axis of the casing axis is horizontal. A vertical partition divides the casing into a fire chamber and a smaller exhaust chamber. The smaller chamber is vented to the outside atmosphere by a chimney. The partition does not completely isolate the chambers, but enables them to be interconnected through a small gap at its bottom. Extending rearwardly along the curved portion of the casing are two oppositely disposed parallel elongated air intake slits at the level of the bottom of the partition. One of these slits is defined by the gap between a hinged lid allowing access to the fire chamber and the casing. The major portion of the section of the casing that surround the fire chamber is of glass, and the bottom of the fire chamber is lined with fire clay.

Abstract: Prior to the present invention, there has not existed any equivalent to the present furnace door for a porcelain furnace in which door there is provided a lineal passage for alternate insertion of an opaque insulator insert and a viewing structure defining a lineal see-through channel having a transparent heat barrier at an outer end thereof utilizing air space within the channel extending to an interior-furnace end for insulating air, and an outer end of the passage defining female step(s) and the respective inserts each respectively including a male step(s) which mates flushly with the female step when inserted to provide an improved heat seal for the inserts each respectively.

Abstract: An oven door of sheet metal construction having cooling air channels which allow room air to pass up through the door. An elongated door handle is mounted across the top portion of the front face of the door. The handle has a base portion attached to the door and an elevated gripping portion extending above the top edge of the door and spaced away from the door by a plurality of spaced strut members to allow cooling air to pass up behind the gripping portion. The elevated gripping portion serves as both an upward hot air deflector and as a shielding means to prevent touching areas adjacent the top edge of the door.

Abstract: A door construction arranged to permit interchangeable disposition of a selected panel face of any one of a plurality of different panels having different appearances. The door construction may include a fire wall panel forwardly of electrical control wiring therein and an interchangeable decorative panel assembly may be removably installed forwardly of the fire wall panel. The decorative panel assembly has a thickness similar to that of conventional wood paneling, thus permitting substitution of wood paneling in the door construction as desired. The door construction is arranged to permit facilitated changing of the exposed panel face at any time. The fire wall panel is electrically conductive and grounded and the decorative panel assembly is spaced forwardly of the fire wall panel. A control console at the top of the door construction is recessed to receive an upper edge portion of the decorative panel assembly for facilitated installation and removal.

Abstract: An opaque fluid chamber having some means for filling and removing fluid therefrom and at least one aperture therein having a transparent plate sealing it, thereby permitting light to enter or leave the chamber through said aperture without losing fluid material therethrough. The transparent plate is many times larger than the size of the aperture and selectively clamped thereagainst in a manner permitting removal of a fogged area of the transparent member away from the aperture for continued light transfer into and out of the chamber without having to clean or replace the transparent plate.