Patent GB-821603-A (GB)
Title: Improvements in lighters
IPC: F23Q2/28
Filed: 1954-11-18
Abstract: 821,603. Cigarette lighters. MOHR, R. Nov. 18, 1955 [Nov. 18, 1954], No. 33486/54. Classes 39(2), 75(1) and 75(3) A lighter having electric ignition of the fuel by means of a filament mounted on a slidably guided actuated carrier wherein the wick or nozzle and the filament carrier are arranged in a hollow head at the top of a casing accommodating an electric battery and a fuel container, the wick or nozzle end is normally covered by a pivoted cover and the wall of the casing adjacent the wick or nozzle is provided with air admission apertures and wherein a member of insulating material is secured at the bottom of the hollow head and carries two battery contacts which are insulated from one another, one of the bottom contacts being connected to the head and the other carrying a leaf spring which engages with a metal part of the filament carrier as the carrier is advanced towards the igniting position, the metal part being insulated from another metal part of the carrier and forming an insulated contact on the carrier to which one end of the filament is connected and the other end of the filament being connected to the metal part of the carrier and thus being electrically connected to the head. A head member 1 to which a fuel container 2 is attached to the underside of the wick holder 6 by means of a bayonet connection is frictionally held in the top of the lighter casing 3 by a spring 61 mounted on a lug 60 and a U- shaped spring 56 held in position by the filler plug 55 of the fuel container 2. A cover member 14, held in position on the head 1 by a screw 17 engaging a boss 18 on a bridge piece on the head 1, has a slide 24 on its underside in which is slidably mounted a plate 25 to the underside of which is attached two L-shaped members 27, 28, the member 28 of which is insulated by means of plates 29, 30. Attached to the forward ends of the members 27, 28 in a downwardly and rearwardly inclined manner is a filament 31 consisting, of or coated with platinum. A cover 15 biased to the open position by a spring 19 is pivotally mounted on the cover member 14 and carries on its underside a finger 21, which extends through an opening 34 in the cover member 14 and in the normal position overlies the plate 25, and a snuffer cap 23 mounted on a leaf spring 22. A slidable actuating member 9 retained in position in a slot 8 in the head 1 carries a spigot 11 which engages a slot in the L-shaped member 27. A battery or accumulator 4, carried in the lighter casing 3, has one terminal 42 which engages a metal screw 39 and another terminal 41 which engages the rear end of a metal member 36 provided at its forward end with a resilient tongue 43 and insulated between members 35, 37. When the actuating member 9 is moved towards the burner 6 the pin 11 slides the plate 25 forwards to release the finger 21 to allow the cover 15 to be swung to the open position, further forward movement causes the L-shaped member 28 to engage the tongue 43 to complete the circuit to the filament 31 which ignites the mixture of vapour from a wick 33 or gas burner and air passing through the slots 7 and 8. When released the actuator 9 returns, under the action of a spring 12 to an intermediate position in which the plate 25 abuts the finger 21 with the cover 15 in the open position, Fig. 3, the member 28 disengages the tongue 43 breaking the circuit to the filament 31, the filament 31 lies beneath the protective cover 14 but the burner 6 remains alight the air being supplied thereto through the slot 7 and the partially covered slot 8. The flame is extinguished when the cover 15 is closed by hand or the actuator 9 is moved manually to the fully retracted position shown 'in Fig. 1 in which position the finger 21 overlies the plate 25 and the cover 15 is secured in the closed position. The lighter may be provided with an electric lamp bulb 5 held in position in an unthreaded socket 44 in the insulated member 35 with the base contact engaging the contact 36, by the-glass bulb fitting into an aperture 45 in the cover 14. The circuit to the lamp 5 is completed by pressing a button 48 on a U-shaped spring 46 having one end bent over and engaging a slot 47 in the head 1, Fig. 4, and the other end provided with a backwardly bent leaf 50 which engages the cap portion of the lamp 5. The wick 33 is folded about a metal strip member 57 and inserted upwardly in the burner 6.