| 摘要 |
1,025,452. Gas-fuelled lighters. A. RACEK. Jan. 17, 1964 [Jan. 25, 1963], No. 2201/64. Heading F4F. A gas-lighter has a replaceable gas tank 20, Fig. 1, having a gas outlet valve 22 closed by a spring 24 and with a shoulder 25 on liftable valve stem 23; a disc-like rocker lever 26 permanently surrounds stem 23 and is engaged by a nose 27 on arms 7 pivoted to the part cylindrical case 1 on pivots, the arms 7 being fixed to cover 3 and attached to the limbs 19 of a member 18 whereby an over-centre spring 16 biases the cover to the closed or open position. A housing part 14, pivoted on pivot 5, engages below a slide member 13 supporting flint spring 12. The friction wheel 6 is rotated on opening of the cover 3 by a driver 8 on the cover engaging and rotating a driver wheel 9 connected to wheel 6. On opening of the cover, arms 7 pivot rocker lever 26 against a fulcrum 28 to engage shoulder 25 and raise the valve stem 23 to open the valve. The fulcrum 28 is of sprung metal and is attached to the case 1, a portion 31 being engaged by a conical ring 32 which is slidable to adjust the amount by which the fulcrum 28 extends into the case 1 and hence the degree of opening of valve 22. In Fig. 2, not shown, the stop shoulder is a nut which is adjusted on the stem to vary the valve opening; and in Fig. 3, not shown, the tank has a screw-threaded engagement with the case to adjust the rocker lever range. In Fig. 4, the nose 27c engages between two teeth 47 on a lever part 26c which bears on a fulcrum part 48 on the tank, the valve stem 23c being raised by a member 35 against spring 24c to move valve member 43 from passage 41. Throttling members 45 are inserted between a plate 40 and portion 39 of the tank and by screwing valve member 38 into portion 39 the members are accordingly compressed to control the flow rate of gas. The member 38 is held against rotation by a splined engagement 46 with parts 26c, 48 and engagement of part 26c with nose 27c so that rotation of the gas tank, which is limited by a lug 51 and a stop 52, adjusts the position of member 38. In Fig. 5, not shown, the lever part 26c is coupled to the fulcrum part which is in turn coupled to member 38. The lighter of Fig. 6, has a part 58 on a drive member 57 to engage above rocker lever 26e which bears on a fulcrum between nose 27e and a shoulder 25 on valve stem 23. The drive member 57 is moved downwardly to open cover 3 through lever 59. To adjust the flame, a valve member 38f, Fig. 8, is prevented from rotation by engagement with the square section valve stem 23f which is also engaged by rocker lever 26f having teeth 47f engaging nose 27f; so that rotation of the gas tank adjusts the position of member 38f as above. |
