Abstract: An igniter mounting bracket is clamped to a ribbon burner tube by cap screws that are received in burner tube threaded bores. The threaded bores are in alignment with the axis and the elongated slot of the burner tube. A ground tube of the igniter has an insulator plug with an igniter tube bore on each tube end. A ground rod has one end welded to the ground tube. A hood with a hood free edge is on the other rod end. An ignition electrode passes through the igniter tube bores with an igniter tube axis. A threaded end of the electrode is connectable to a controller. An ignition portion parallel to and spaced from the hood free edge is on the other end of the electrode. The ground tube is received in a passage through the mounting bracket. The igniter tube axis is perpendicular to burner tube axis.

Abstract: Apparatus for sensing the presence of a flame issuing from the flow of fuel through an elongate oven burner comprises an electrical current sensor immersed in a flame having carbon atoms which support such current. The fuel is ignited by a spark igniter. Should no flame exist after a predetermined time interval, or if the flame is extinguished, the supply of fuel to such burner is terminated and the spark igniter is disabled.

Abstract: Apparatus for sensing the presence of a flame issuing from the flow of fuel through an elongate oven burner comprises an electrical current sensor immersed in a flame having carbon atoms which support such current. The fuel is ignited by a spark igniter. Should no flame exist after a predetermined time interval, or if the flame is extinguished, the supply of fuel to such burner is terminated and the spark igniter is disabled.

Abstract: Fuel ignitor apparatus especially adapted for use in a commercial baking oven having a plurality of fuel burner tubes susceptible of movement in response to changes in ambient temperature. The ignitor apparatus associated with each burner tube is coupled to the latter for movements therewith. Each ignitor is mounted on a wall of the oven in such manner as to enable bodily movement of such ignitor relative to the oven so as to avoid imposing bending stresses on the ignitor or the oven.

Abstract: Apparatus and methods for controlling temperature in a bakery oven zone wherein a predetermined temperature is selected and fuel and pressurized combustion air are supplied to burners in such zone. The fuel supplied is a function of the combustion air pressure which may be adjusted in response to the sensing of temperature variations and in such manner as to maintain the predetermined temperature in such zone substantially constant. The pressure of the combustion air also may be varied in such manner as to adjust the number of ignited burners in such zone.

Abstract: Apparatus for igniting combustible fuel discharged from an outlet in a burner tube comprises a dielectric support within which are an ignition electrode and a ground electrode projecting beyond the support and which are spaced from one another a distance to form a gap which may be traversed by sparks generated by the ignition electrode. A fuel concentrator plate is carried by the ground electrode and partially embraces the ignition electrode adjacent the gap. The electrode support is mounted directly on the burner tube in a position to enable the concentrator plate to intercept fuel discharged from the outlet and concentrate the fuel in the zone of the gap.