Abstract: The improvement of the present invention is directed to an endplate which is disposed at the end of a gaseous fuel burner body forming the flame-containing space. Such endplate has a portion which extends substantially above the top edge of the mixing plates. The endplate may have lateral sides which extend beyond the lateral extent of the endplate body to shield and protect the apertures disposed within the longitudinal extent of the mixing plates also to shield the flame on the lateral sides of the mixing plates disposed near the endplate. The endplate improvement of the present invention serves to substantially reduce secondary air from chilling the flame near the end of the burner, and thereby substantially reducing the formation of carbon monoxide, which is formed preferentially to carbon dioxide in reduced temperature flames.

Abstract: The high-temperature burner assembly of the present invention includes an oxygen containing nozzle body which has a gas conduit insert disposed therein. The gas conduit insert includes a gas conduit insert tip which has a substantially flat exterior tip face with a frusto-conical shaped prominence disposed thereon and protruding from the tip face. The gas conduit insert tip includes a centrally disposed gas channel terminating at the proximal end of the frusto-conical shaped prominence to form a knife edge to provide reduced available surface for accumulation of carbon and for briefly delaying the combustion. An oxygen expelling orifice is concentrically disposed about the frusto-conical shaped prominence for directing oxygen therefrom to mix with the gaseous fuel for combustion within a refractory burner block.

Abstract: The improved positive pullback synchro valve actuator of the present invention comprises a universal cam assembly having a frame supporting a deformable cam strip which is operatively connected to a plurality of contour adjustment screws and which may be adjusted to form the desired shape of the cam. The cam strip is further operatively connected to a plunger which is disposed for movement transversely of the cam strip and in the longitudinal direction. The apparatus is positive in its pullback, as the plunger is linked to the universal cam assembly, such that when the operator turns the universal cam assembly, there is assurance that the associated valve is closed. In some applications, the plunger may be connected to a shaft yoke which is disposed transversely of the plunger for converting the longitudinal movement into limited reciprocal rotational movement. In these embodiments, the shaft yoke engages a valve shaft which is urged by such yoke into limited reciprocal rotational movement.