Abstract: A flame forming burner for simultaneously minimizing excess air consumption while suppressing NO.sub.x emissions. A dual zone air register is provided to supply primary air in substoichiometric quantity into mixture with fuel to produce a flame in a primary zone. Additional air is introduced around the flame and downstream of the initial combustion site in a secondary zone, in sufficient quantity to complete combustion. In the preferred embodiment, primary air is provided through a venturi throat, and secondary air is provided through an annular passage equipped with vanes which generate dual counter-rotating (DCR) air flow surrounding the primary zone. Dampers for each register control the primary to secondary air ratio. Preferably, a divergent, non-circular throat provides flame shaping.

Abstract: A burner for liquid fuels such as light, medium and heavy oil, in which a fuel supply pipe is concentrically located in an air supply pipe and partially enclosed by a sleeve carrying air. A spray diffuser and a twist-producing member encloses the fuel supply pipe upstream of the spray diffuser. The twist-producing member has a fixed blower wheel and receives combustion air from the periphery thereof. The combustion air quantity is regulatable upstream of the burner head as a function of the prevailing fuel flow. A space located between the twist-producing member and the air supply pipe, holds two additional air supply pipes. One of these additional air supply pipes, an innermost pipe, has an end cone directed towards the outside. Coaxially downstream from the twist-producing member enclosing the fuel supply pipe, there are two additional twist-producing members with opposite twist direction enclosing each other.

Abstract: A wood burning stove, a free standing fireplace or fireplace insert is constructed to receive one of three possible types of inserts to make the unit adaptable to a convection, hot air or hot water heating system. The wood or like fuel combustion rate is automatically controlled by a temperature sensor and draft control system. The insert may be a baffle structure, an air to air heat exchanger or an air to water heat exchanger.

Abstract: A tooth formed on a brake pawl has, at a portion facing the outer peripheral surface of a brake gear coaxially mounted on the output shaft of the transmission, first and second inclined surfaces which are bounded by an intersectional line parallel to the axis of the output shaft. The inclination angle of each surface with respect to a tangent line passing through a point where the intersectional line is in contact with a circular path swept out by the outer peripheral surface of teeth formed on the brake gear is greater than zero degrees. With this, the brake pawl is pushed way from its engaged condition due to collisions between shoulder portions of the teeth and one of the first and second inclined surfaces above a predetermined vehicle speed.

Abstract: A kitchen exhaust system has an outside air supply blower and a hood exhaust blower discharging outside the building. Air is introduced from the supply blower into the area behind the cooking unit and the exhaust is taken through a removable flow director or guide secured to the typical exhaust hood. The flow guide has an inlet located toward the front of the cooking unit and relatively near the top of the cooking unit and has convenient release devices to facilitate removal of the guide from the hood to facilitate removal and replacement of filters or grease removing devices from their usual disposition in the hood assembly. The shape of the flow director is such as to provide a high velocity of the fluid flow adjacent the intake opening and thereby provide more effective scavenging action for combustion products and cooking fumes than is typically found with an exhaust unit unassisted by the flow director of the present invention.

Abstract: A heating device comprising, as portions, a heater and a dolly of which a tilt frame of the dolly is attached to, or fixed integrally with, the housing of the heater with such adjustability with respect to a base of the dolly to afford universality of position of the heater when taking into account the orientability of the device as a whole. The scope of positioning of the device is greatly amplified by use of a handle strut fixed to the tilt frame.

Abstract: A stove having a combustion chamber surrounded by four sides and a top and having a warm air conduit extending between opposite sides and opening outwardly of at least one of the sides. Where the stove is to utilize natural convection, the conduits open outwardly of both the sides of the enclosure. An opening is provided in the top or bottom of the warm air conduit remote from its outlet or outlets for effecting draft thereto. A preferred embodiment has two such heating conduits at right angles to each other and with an opening therebetween to further increase draft through the conduits. In the case of forced convection, the conduits need only open from one of the sides.

Abstract: A method for economically manufacturing connecting rods for small reciprocating engines having a mating shank and cap. This method includes the steps of fine blanking the shank and cap portions of the rod, and simultaneously broaching these portions to obtain mating serrations on the crank pin bore and the shank-cap interface.

Abstract: A rotary energy storage device includes a core in which a multiplicity of anisotropic filaments are embedded in a resin matrix. Extending through the core is an axis about which the core is rotatable. At least a portion of the filaments in the core are oriented transversely of each other, but not circumferentially of the axis of rotation. The transverse orientation of the filaments relative to each other produces resistance along at least two axes to radial and tangential stresses imposed on the core when it is rotated. The outer peripheral surface of the core is enclosed and snugly fitted by a shell. The shell includes a filamentary structure that provides a plurality of substantially parallel and juxtaposed filament portions oriented to circumscribe the peripheral surface of the core. The filament portions of the shell are encased in a matrix material that bonds adjacent filament portions to one another.

Abstract: A heat exchange unit is carried on the back of a free swimming diver and includes small tanks of propane and oxygen and a mixing chamber into which the two gases are fed and mixed. The gaseous mixture is then fed through a burner nozzle and burned to heat the atmosphere in a heat exchange chamber. The chamber includes a first coil therethrough in which air from the main oxygen tank is circulated and heated on its way to the diver's mask. A second coil through the heat exchange chamber carries water or other heating fluid from the diver's suit which is heated and returned.

Abstract: A bicycle transmission with one or two driving sprockets on a pedal shaft, selectively connectable with any one of several driven sprockets of progressively varying diameters on a rear-wheel axle, is controlled by a gear-shifting lever rigid with one or two cam disks each coacting with a cam follower on an associated rocker arm. Each rocker arm is tied to a flexible link, such as a Bowden cable, serving for the relative axial shifting of the chains and a respective sprocket set to let the chain jump from one driven (or driving) sprocket to an adjoining one. Each cam disk has a plurality of peripheral lands whose distances from the disk axis determine the engagement of the chain with one of the sprockets of the associated group.

Abstract: A core is capable of being utilized within a conduit in a push-pull type remote control cable assembly. The core has a metallic wire member and includes a coating around the wire member which has an outer layer of TFE resin. An inner layer of the coating includes FEP resin which is bonded to the wire member to secure the coating thereabout.

Abstract: A carrier film composed of an ultra high molecular weight high density polyethylene is disclosed herein. The carrier film has a pair of opposed surfaces and a pair of opposed edges. The carrier film is perforated with a plurality of circular apertures. One of the opposed surfaces of the carrier film is roughened to carry a plurality of tobacco leaves to a wrapping machine. Tobacco leaves are held on the carrier strip by a vacuum and wound and stored on a spool. After a selected aging period the carrier strip is unwound from the spool and the tobacco leaves and carrier strip are sprayed with an adhesive. The carrier strip then releases the tobacco leaves adjacent a wrapping machine and is washed, dried and cooled.

Abstract: A linear actuator for converting rotary motion to linear motion including an elongated rotary threadless shaft and a rider assembly mounted for movement axially of the shaft and carrying rollers mounted for rotation about their respective axes with their surface in frictional contact with the shaft. The roller's axes are disposed at an acute angle with respect to the shaft so that as the shaft is rotated the rider assembly will move along the shaft and carry with it such parts to which it may be attached.

Abstract: The place shift-up mechanism of a digital clock comprises ratchet feed mechanism which permits manual setting of the clock even during the shift-up operation. The ratchet feed mechanism comprises an eccentric cam secured to a rotary shaft which also carries an eccentric operation pin. A ratchet wheel is rotatably supported by the shaft. A place shift-up lever is supported so as to be capable of rocking and sliding movement and has a forked leg plate with spaced legs receiving the eccentric cam between them. One leg of the forked leg plate has a feed pawl for engagement with the ratchet wheel and also a hook pawl engageable by the operation pin to move the place shift-up lever in one direction. The other leg of the forked leg plate has a return pawl which is engageable by the operation pin to move the plate shift-up lever in an opposite direction.

Abstract: The invention relates to a method and mould for the production of a connecting rod or similar object having a body of cast metal, expecially a non-ferrous metal such as a zinc or aluminum alloy, the body comprising a connecting rod shank and of which at least one connecting rod end is provided with a bearing race element of hardened steel, typically an outer race for a roller or needle bearing. The invention particularly pertains to connecting rods having bearing surfaces subject to high loads and which are characterized by the absence of "pockets" in which contaminated lubricant might accumulate. Such connecting rods are, for instance, used in two-stroke combustion engines as for instance outboard motors for boats or the like, with rollers or needles disposed between the said outer race and the journal of the crank shaft throw.

Abstract: A linear type of compressor wherein a housing section, for enclosing a crankshaft and pinions of a counterbalancing synchronizer, has axially extending support means for the pinions formed integrally therewith through an inner flange also integral with the housing section, so that the holes for the pinion shafts may be formed in the support means when the hole in the housing for the crankshaft is formed. This assures the making of all of the holes exactly parallel and avoids time-consuming assembly work, experienced in prior art compressor manufacturing, when the housing sections are put together. By providing a large opening through the upper portion of the support means or through the bottom of the housing an axial bore may be made to receive a piston type of crosshead.

Abstract: A speed control device for a bicycle, in which a base member is fixed to the upper portion of a handle stem, a mounting member having a rising higher than the upper surface of the handle stem is fixed to the base member, and a speed control lever is pivoted to the rising of the mounting member.

Abstract: A photoflash unit comprising a plurality of high-voltage type flashlamps mounted on a printed circuit board containing circuitry for sequentially igniting the flashlamps in response to successive high-voltage firing pulses applied thereto. One lead-in wire of each of the flashlamps is connected to a common circuit conductor. An electrically conductive reflector unit is positioned between the lamps and the circuit board. The reflector unit is connected to the common circuit conductor by means of a pliable, electrically conductive adhesive material, whereby the reflector unit functions as an electrical shield for the circuitry.

Abstract: A transmission detent cable having a damaged end fitting is repaired using the repair part and method of this invention, which involves replacement of only the damaged end portion of the cable so as to thereby facilitate reuse of the otherwise serviceable portions of the original detent cable. The replacement end portion comprises an elongate hollow tubular member having a circumferential groove at one end thereof of dimensions closely approximating the undamaged seal-receiving groove on the original cable housing end fitting, and the replacement end portion has an axially extending socket formed in the opposite end thereof of inside dimensions closely approximating the outside dimensions of the original end fitting, the socket being adapted to receive therein the portion of the original end fitting which remains after the damaged end portion has been severed and removed.