GB1461735A - Liquid fuel burning appliance with quick return arrangements - Google Patents

Abstract

1461735 Burners MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 Feb 1975 [28 Feb 1974 (3)] 6957/75 Heading F4T A liquid fuel burner comprises means 22 for moving a wick downwards to an uncombustible zone, means 24, 39, for locking the wick at a desired position, means 31 responsive to an abnormal condition of the burner for unlocking the means 24, 39, and manual means 48 for unlocking means 24, 39, independently of means 31. A domestic space heater comprises a petrol can 1 supporting a cylindrical air duct 2, a wick 7 disposed around the duct and secured to a guide 8, a further guide 9 secured to guide 8, and carrying spring-urged cylindrical members 12. A control shaft 16 carries a pinion 20 which meshes with a rack 10 formed in guide 9 and a roller 21 which engages a guide edge 11 also in guide 9. A ratchet wheel 24 is driven by shaft 16 through friction discs 25, and a pivoting lever 28 carried by the shaft has a pin 29 which is located in an arcuate groove 30 in ratchet wheel 24. A vibrating sensing device 31 is attached to can 1 and comprises a weight 34 suspended from a dished member 35, and a lever 36 pivoted at 37 and carrying a pawl 39 pivoted at 40. In operation, wick guide 9 is spring-urged to rest against a shock absorber 50 with the wick in the non-burning zone. When shaft 16 is rotated by a knob 22 rack and pinion 20, 10, raise the wick to the combustible zone whilst ratchet wheel 24 rotates clockwise until a lug 46 on the wheel engages pawl 39 and the wheel is locked. Precise adjustment of the wick can be made by rotating shaft 16 against the action of friction discs 25, and the limiting position is determined by pin 29 in groove 30. If the heater tilts when it is alight, weight 34 swings and lever 36 disconnects pawl 39 from wheel 24, and the wick is moved downwardly to the non-burning position. The flame may be extinguished manually by rotating a lever 48 counterclockwise so that a chain 49 disconnects the pawl from the ratchet. Different arrangements of flame extinguishing devices can be used, Figs. 10-12 (not shown). A detachable combustion chamber 56 comprising inner and outer perforated cylinders 57, 58 surrounded by an air supply chamber 59, is provided.