GB271290A - Improvements in gas lighting devices - Google Patents

Abstract

271,290. Woods, S. J. July 31, 1926. Lighting burners by electric devices.-A rod 10 is adapted to be moved in one direction against the action of a spring 29 on opening the gas-cock 20 and be released at a predetermined point so that it is moved rapidly by the spring in the opposite direction for operating a magneto 7 in circuit with a sparking electrode 3 adjacent the burner-head 1.. The magneto shaft is connected by a ratchet clutch mechanism with the rod 10 so that it is rotated only by the return movement of the rod. The gas-cock 20 carries an arm 21, extending into a casing 14 containing a member 23 slidable on the rod 10, and normally engaging the rear end of a latch 25. The member 23 engages a pin 24 on the rod 10 and is moved forward by the arm 21 until the latter is disengaged from the latch to allow of the return movement. During the forward movement of the member 23, a cam 28 thereon depresses a lever 16 to connect wires 5, 12, connected respectively to the electrode 3 and to the magneto 7, and complete the igniting circuit. The latch 25 is pivoted and is depressed by the arm 21 against the action of a spring to engage a slot 27 in the casing 14 when the gas-cock is moved sufficient to cut-off the gas supply, the latch being locked in this position by a projection 22 on the arm 21 engaging a groove 26 on its upper surface. To re-open the gas-cock, it must first be fully closed so that the arm 21 is moved behind the latch to allow the latter to rise into its normal position. A plurality of burners may be ignited, as shown in Fig. 1, by a single rod 10 and magneto 7. The rod 10 has a disc 30 engaging a pivoted lever 31 connected to a spring-pressed piston 33 movable in a pivoted cylinder 34 immersed in oil which flows into the cylinder as the piston moves out and delays the return of the rod 10 to normal position so as to allow the link 16 to keep the circuit closed while the magneto is in operation.