Abstract: A burner assembly for heating a U-shaped radiant tube. The burner assembly includes a generally conical burner nozzle supported on the end of a gas supply pipe and disposed within an inner tube which, in turn, is located within the radiant tube. The burner nozzle may be adjusted selectively back and forth within the inner tube to change the ratio of primary and secondary combustion air supplied to the nozzle and thereby change the length of the flame produced by the burner assembly.

Abstract: A pannier for a cycle adapted to be secured to a carrier rack mounted over a wheel. A flexible, generally rectangular bag is of sufficient size that its rear portion extends downwardly from the carrier closely adjacent to the spokes of the wheel. A rigid panel fixed to the rear of the bag and extending substantially to the bottom of the bag is utilized to provide structural definition for the bag and to prevent it from interfering with the spokes. A U-shaped bar having opposed ends pivotally connected to the rear panel is employed for holding the bag in an open or collapsed condition. In one embodiment a second panel extends substantially across the bottom of the bag and is pivotally connected to the lower edge of the first panel to provide lateral stability for the bag. The opposed ends of the bar may be utilized as pivot pins for both the panels and the bar.

Abstract: A pannier mounting arrangement is disclosed for mounting panniers on the rear carrier rack of cycle vehicles such as bicycles or motorcycles including an elongated rod permanently attached to each pannier encased within a pouch extending across the upper edge of the pannier, the rod adapted to be slidably received within a channel section, either formed in a track section attached to existing bicycle carrier racks or formed integrally in a horizontal platform of specially designed carrier racks incorporating the mounting arrangement components. Also disclosed is a specially designed rear carrier rack which includes a horizontal platform having the channel sections integrally formed therein supported by a plurality of struts arranged to provide a rigid support. The rear carrier rack also features an arrangement for providing an adjustment in the length of the horizontal platform, so as to be readily installed on cycle vehicles of various frame sizes and configurations.

Abstract: A burner block for an industrial furnace is resiliently seated in a hollow annular member, the latter being made of a metal such as stainless steel and the burner block being made of a refractory material. Because of the resilient mounting, the burner block is seated firmly in the annular member even though these two parts have different rates of thermal expansion. In addition, a cooling fluid is circulated within the interior of the annular member to cool the latter so that the furnace may operate at a temperature which is well above the temperature at which the annular member loses its structural integrity. All of this permits the burner block assembly to be mounted effectively on the metal outer shell of the furnace without relying upon the refractory lining of the furnace for support.

Abstract: A gas mixing line burner having a stoichiometric turndown ratio in the range of between twenty-five and thirty to one and capable of operating at a capacity of about 2,000,000 BTU/HR per lineal foot of burner. The burner includes an air/fuel manifold having a discharge face which causes combustion air jets to mix with fuel jets and form a main combustible mixture which is provided with a constant ignition source by virtue of stabilizing air jets interacting with the fuel jets and creating a secondary combustible mixture down the center of the main mixture. One embodiment of the burner includes a combustion chamber which is formed by refractory material while the combustion chamber of an alternative embodiment is formed by stainless steel sections connected by expansion joints which prevent warpage of the sections.

Abstract: A tube has one end portion supported within an opening in a heat-insulating wall and is fired by a dual fuel burner. Disposed within the one end portion of the tube is a combustion sleeve which extends the flame of the burner inwardly beyond the wall and thereby prevents the insulated end portion of the tube from being burned out. An abrupt restriction is formed at the discharge end of the combustion sleeve and creates turbulence in the air/fuel mixture to promote cleaner and more efficient burning.

Abstract: The burner is capable of operating either on gas or fuel oil and includes a burner block with a high velocity discharge nozzle. Combustion air for the burner is rotationally spun to promote more complete combustion of the fuel and to reduce the formation of carbon deposits along the block and within the discharge nozzle. As a result of the spinning combustion air, a high rotational velocity is imparted to the flame so that the flame threads corkscrew-fashion out of the discharge nozzle and is formed with a hollow center.

Abstract: Flame supervisory method and apparatus in which a cross-checking relay system is controlled jointly by time-delay factors and a two-state control signal derived from the flame and having respectively pre-flame and flame-responsive polarity characteristics produced by reflexive bias and regenerative amplification and conversion of the basic flame-detection current to a control signal determining either switch-over to full flame burner operation or lock out of the system under ignition failure conditions. The two control states of the converted flame-detection signal are of a self-locking character, the pre-flame state tending to inhibit false response of the relay system to spurious flame signals, and the converted control signal in general being highly discriminative owing to an abrupt, non-linear change in polarity differentiating it from the pre-flame state.