Abstract: A horizontally elongated hollow body constructed of heat resistant material is provided and closed at its opposite ends by means of upstanding end wall structures. The body includes a flue gas outlet centrally intermediate the opposite ends thereof and one end wall structure includes an access opening with which a closure door, shiftably supported from the corresponding end of the body, is operatively associated for movement between an open and closed positions relative to the access opening. The door and the opposite end wall structure of the body each include combustion air inlet structure for admitting combustion air into the interior of the body and structure is provided for variably throttling the inflow of combustion air. The flue outlet opens outwardly of an upper portion of one longitudinal side of the body and the other longitudinal side of the body defines a viewing aperture therein closed by a transparent heat resistant panel.

Abstract: In a viscous shear damper the seismic mass is chamfered at all its corners. Thus, the clearances between the seismic mass and its casing are gaps with oppositely widening out sections separated by middle sections of smallest widths.

Abstract: A solar collector for use in either an upfeed forced hot water heating system or a downfeed system features a pair of serpentine coils arranged in opposing flow relationship within a shallow insulated collector housing having a sealed glass closure panel. The two serpentine coils lie in spaced parallel planes within the housing, and the two coils are offset laterally so that their individual longitudinal loops overlap laterally by approximately one-half the width of each loop. The flow of heated fluid in each serpentine coil is controlled independently of the other coil by a temperature-responsive modulating valve connected in each coil close to the outlet end thereof within the housing. Efficiency of operation and practicality and economy of construction are featured.

Abstract: A compact gas power burner is provided which includes a cylindrical mixing tube into which combustion air is discharged tangentially from a centrifugal blower located adjacent the closed end of the mixing tube, and gaseous fuel is admitted into the discharge airstream of the blower upstream from the admission location of the airstream into the mixing tube so that the swirling component of the air in the mixing tube during its passage to the open end of the tube will promote the mixing of the air and gaseous fuel, the mixing tube being provided with a honeycomb ceramic disc at its end to which it is attached to a cylindrical heat exchanger, and ignition means and flame sensors are provided on the downstream side of the ceramic disc.

Abstract: Proposed in this application is a device for attenuating vibrations in a drive shaft of a motor vehicle of a type, in which driving force of an engine is transmitted to both left and right drive shafts through a clutch, a transmission mechanism, and differential gears. This vibration attenuating device is constructed with a vibration absorbing device having a resilient member and a weight combined together as an integral whole, and both members are provided at one of the drive shafts having a length longer than the other to the end part thereof where wheel is to be fitted.

Abstract: A draft tube in a wood burning stove is provided with a nozzle at the lower end thereof for directing a portion of the draft air downwardly against the charge of burning wood, coal, etc. and deflects a portion thereof sideways into a zone above the fuel to provide a more complete combustion of the rising volatiles. The nozzle may be integral with the draft tube or may be attached thereto as an accessory. The nozzle includes a tube having an outside diameter somewhat smaller than the inside diameter of the draft tube to define an annular passage therewith when the nozzle is installed. An annular radial flange is mounted on the outside and at the lower end of the nozzle and in line with the annular clearance whereby the major portion of the air and draft will flow directly downwardly through the nozzle tube while a portion passing through the annular passage will strike the flange and be deflected perpendicularly to the flow of the draft.

Abstract: The invention relates to a transmission mechanism for imparting rotational movements to a driven member by means of a reciprocating drive member. The mechanism comprises means pivotally connected to the drive member for alternately actuating two dogs of an operating unit associated with the driven member so as to move the operating unit to one or the other of two end positions, thereby providing said rotational movement of the driven member. The means for actuating the operating unit is an arm capable of pivoting to and fro across a central plane through the travel path of the drive member, said arm being arranged to effectuate the alternate actuation of both the dogs by one and the same free end thereof, power means for moving the operative unit to the respective end positions being pivotally mounted in relation to a stationary pivot and having a point of action being opposed to said pivot. This point of action of the power means follows the operating unit when moving this between said end positions.

Abstract: A burner adapted for use with alternative fluid fuels is provided. The burner includes a cartridge that comprises a nozzle with passage means therein. The nozzle passage means include an entrance adapted to receive a liquid fuel and a plurality of exit ports to discharge the liquid fuel in the direction of the combustion zone. An annular channel is formed around the nozzle and is adapted to supply a gaseous fuel or an atomizing agent for the liquid fuel to slot means, which tangentially communicate with each exit port so that the respective fluids passing through the exit ports and slot means intimately mix and are directed to the combustion zone. Fin means associated with the cartridge impart a swirling pattern to combustion air admitted into the furnace cavity.

Abstract: A mechanical system for speed adjustment, comprising mechanical driving means and a driven shaft member, with linking means between the driving source and the drive shaft member for driving the latter, the system further comprises a crank element comprising an eccentric disc disposed on the driven shaft member and a connecting rod driven by the eccentric disc, the connecting rod comprising an arm portion that rides the eccentric disc. Also included are means for adjusting the eccentricity of the eccentric disc with respect to the driven shaft, which adjusting means comprises a spacing element movable into and from a position between the crank element and the driven shaft, the system also contains an output shaft element driven by the connecting rod.

Abstract: A wood-burning heating apparatus, used as a parlor stove, and providing a significant heat output is disclosed. The stove has primary and secondary combustion chambers and a baffling arrangement for directing flue gases along a circuitous path to the exit aperture whereby a significant proportion of the heat of said gases is given up to the apparatus. A vertically oriented downwardly directed baffle separates the combustion chambers. Primary and secondary air paths supply air to the primary and secondary combustion chambers respectively. Each of the supply conduits is pre-heated and the secondary air supply provides oxygen substantially evenly around an opening at a bottom portion of the baffle to increase the efficiency of secondary combustion. The apparatus is further provided with a self-clearing top smoke chamber having a pivotable top cover. A rotatable flue collar is provided for either a horizontal or a vertical connection to the exit flue.

Abstract: A gaseous fuel burner for enhanced flame adherence to a tile surface in a furnace, comprising a gas burner tube having a nozzle at its end, including a plurality of radial orifices circumferentially spaced in a transverse plane. A cylindrical combustion air plenum is coaxial with said burner tube, and means are provided to supply combustion air to said plenum at a selected super-atmospheric pressure P1. There is a circular concentric opening in the wall of the plenum and a short length of air tube welded to the opening, which is inserted into an opening in the furnace tile. A plurality of curved vanes are provided, and means to lead air from the pressurized plenum through the vanes to provide a rapidly spinning air flow which moves helically along the air tube into the tile and into the furnace. The central opening of the tile is flared in an arcuate manner. There is sufficient pressure drop between the air plenum at P1 and inside of the air tube P2, after passage through the vanes, of the order of 0.8 W.C.

Abstract: A hearth-like base portion has a top stove supporting wall spaced above the supporting surface to provide an insulating area below the stove. Also, an upright firewall portion is secured to the rearward end of the base portion and has a face plate arranged to be spaced from the wall of a room to provide an insulating area behind the stove. Air circulation passageways are provided in the base and firewall portions for cooling. The discharge of heat from these portions may be upward by convection or in a reverse direction by a powered blower. A removable mantle is supported on the top of the firewall portion.

Abstract: A false-twist spindle friction disc comprises an annular rotor member whose lateral surfaces are machined to form coupling means and which is made of a highly rigid, centrifugal-force-resistant, high melting point material, and a support base made of a thermoplastic synthetic resin surrounding the annular rotor member while leaving the outer peripheral portion of the latter exposed. With the annular rotor member used as a core, the synthetic resin support base is formed by injection molding so as to unit them together. The presence of the coupling means formed in the lateral surfaces of the annular rotor member adds to the firmness with which the annular rotor member and the support base are united together.

Abstract: A firebox is provided having an end panel, opposite side panels and top and bottom panels, one end of the firebox being open. The firebox includes depending support legs and an outer housing including opposite side and end walls and a top wall is telescoped downwardly over the firebox with the front wall thereof sealingly secured across the open end of the firebox and the other end wall, the top wall and opposite side walls spaced outwardly from the end panel, top panel and opposite side walls, respectively, of the firebox. The lower marginal edges of the opposite side and end walls of the housing are generally horizontally registered with the lower ends of the legs and the firebox includes a grate spaced above the bottom panel. A fuel door opening is provided in the front wall above the grate and a draft door opening is provided in the front wall below the grate and above the bottom panel.

Abstract: A fireplace air distribution system includes a plurality of air feeder tubes extending from a manifold for installation through the back wall of a fireplace for bringing outside air through the manifold and tubes into the fireplace. The manifold includes a baffle for distributing the air evenly to the tubes for throttling the flow of air before it enters the tubes. This protects against wind gusts and reduces the discharge velocity of the air as it exits from the tubes into the fire.

Abstract: A fireplace has an imperforate dished fire-pan, the sloping sides of which support the fire, which radiates through an opening in the wall of a conical enclosure superposed on the fire-pan. An outer frustoconical casing in most cases surrounds the enclosure, with an opening in register with the opening in the disclosure, and defines an air circulation space through which air circulates upwardly from beneath the fire-pan up into the room. A duct from the exterior of the room to be heated may extend into the space beneath the fire-pan, which space may also contain a water pan to humidify the circulating air. A fire control member is rotatable between the enclosure and the casing so as optionally to obturate the openings therein with either a mesh fire screen or a plate closing off the openings. The fireplace aims to provide complete and controllable combustion of wood fuel, and efficient space heating and, optionally, ventilation of a room in which it is situated.

Abstract: The specification discloses a fireplace stove in which heat exchange tubes slope upwardly from a sloping rear wall to a sloping front wall of a polygonal body and are open at each end. A door is openable and/or removable from the body to form a fireplace. A door frame has a thermostat controlled damper at its top and outlets to the fire area near in the lower, side portions thereof. A baffle is spaced below the flue outlet and is aligned with the flue outlet.

Abstract: The specification discloses an oven with an outer oven body and an inner oven liner disposed within the body in a spaced apart relationship to provide a space between the body and the liner. Both the body and the liner include open ends facing in the same direction. A removable panel is attached to cover the space between the liner and body. A flexible gasket is clamped between the liner open end and the panel for providing support for the liner and for engaging the oven door to form a seal between the door and the liner.

Abstract: A system for heating an edifice comprising a firebox, means for closing a fuel access opening to the firebox, a combustion air passageway opening into the firebox and extending to the outside of the edifice, and a stack connected to, and projecting vertically from, the firebox to convey combustion gases therefrom. A baffled air plenum chamber surrounds the firebox and a portion of the stack and is defined by a housing forming an enclosure around the firebox and stack. An upper air opening into the air plenum chamber is disposed at the upper side of the housing, and a plurality of lower air openings are disposed in the housing on opposite sides of the firebox, and are spaced downwardly from the upper opening.

Abstract: A positive drive system including a drive cable consisting of a flexible line means having a plurality of regularly spaced nodules rigidly attached along its length, and a positive drive sheave having a curved surface configuration receptive to the drive cable's nodules for providing a positive, nonslip rotary drive engagement between the drive cable and the sheave.