GB1309957A - Devices for adjusting the flame of a gas cigarette-lighter - Google Patents

Abstract

1309957 Gas lighters J G TRICOT 16 Dec 1970 [6 Feb 1970] 59632/70 Heading F4F A flame adjusting device in a gas cigarettelighter of the type having a valve body 4 screwed in a well 3 formed in the upper portion of a gas reservoir 2, the bottom of the well communicating with the reservoir via a bore 15 housing a wick 16, comprises resilient lugs 10 positioned at the bottom of the well and disposed at spaced angular intervals about an extension of the axis of the bore together with a tapered seat member 11 which moves longitudinally in the well and caps the lugs to move them more or less towards one another thus modifying the cross-section of the passage defined by the lugs for the flow of gas. The tapered seat 11 is connected to the valve body 4 and is moved by screwing the valve body, which houses a valve 5 terminating in a burner 6, in and out of the well 3. In Fig. 3 the lugs 10 have a cross-section of a sector of an annulus, each having a part cylindrical surface 13, these surfaces together forming a substantially cylindrical passage which receives the upper end of the wick 16, movement of the lugs throttling the wick to a greater or lesser extent. In an alternative embodiment, the upper end of the bore 15 is reduced to a capillary orifice (18), Fig. 6, not shown, and each lug has a cross-section of a sector of a circle, Fig. 7. The gas flow is therefore controlled, not by throttling the wick, but by modifying the gas flow passage formed by the lugs. In a further embodiment, Fig. 11, the lugs have a cross-section of a sector of an annulus for most of their height, but at the top have a cross-section of the sector of a circle. The gas flow is controlled partly by throttling the upper end of the wick and partly by modifying the gas flow conditions in the lower and upper part of the passage respectively.