Adjustable ignition electrode assembly

Combustion – Burner having electrical heater or igniter – Spark electrode in front of or adjacent fuel discharger


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F23Q 300




An ignition electrode assembly for a gas-fired oven burner formed by a cylindrical casing having a longitudinal slot occupied by metal ribbons to define a port through which gas is emitted. Included in the assembly is an electrode unit which projects into the oven interior through a bushing in a cover plate mounted on a wall of the oven, the unit having a tip on the free end thereof. The unit is pivoted on the bushing by means of a holding collar received in the bushing and having an external handle whose movement is limited to allow the electrode unit to be swung from a normal first position to a temporary second position. In the first position, which is settable, the spacing then established between the electrode tip and the port ribbons creates a spark gap therebetween capable of sustaining a spark discharge when a high voltage is applied across the gap. In the second position, the tip makes direct contact with the port ribbons to initiate the spark discharge. The handle is spring-biased to return the tip to its normal position when the handle is released.

patent: 139811 (1873-06-01), Pitt
patent: 3172460 (1965-03-01), Temple et al.
patent: 3352346 (1967-11-01), Temple
patent: 3490856 (1970-01-01), Temple


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