Patent GB-621570-A (GB)
Title: Improvements in or relating to pyrophoric lighters
IPC: F23Q2/08
Filed: 1946-05-23
Abstract: 621,570. Frictional lighters. RONSON ART METAL WORKS, Inc. May 23, 1946, No. 15625. Convention date, Jan. 9. [Class 75(iii)] [Also in Group XXII] In a pyrophoric lighter comprising an axle supported adjacent a fuel casing, a gear segment in the form of a U-shaped fitting is arranged with its legs enclosing the axle and one leg engages in a non- circular opening in the side wall of a wick snuffer and the other leg is disposed outwardly of the snuffer wall to engage with a reciprocating finger-piece for actuating the snuffer. In another construction of pyrophoric lighter a sparking wheel has a central hub extending from one of its side faces and a pawl plate surrounding the hub has a pawl finger which engages with ratchet teeth on the side face of the sparking wheel, the pawl plate engaging with a wick snuffer so that the pawl plate and sparking wheel are actuated upon opening the snuffer. A U- shaped block 27, Fig. 20, having a circular passage in each leg to receive the axle of the lighter and having one leg formed as a gear segment 29 is fitted into a correspondingly shaped aperture 34a in each side wall 34 of a snuffer lever 33, Fig. 15, so that the gear segments 29 are disposed exteriorly of the outside faces of the snuffer, the ends of each set of teeth engaging the outside faces of the snuffer to prevent inward displacement of the blocks 27. The gear segments mesh with racks on a reciprocating finger piece. In a different construction shown in Fig. 3Àtwo gear segments 6 are inserted in toothshaped piercings 9a in a snuffer lever 9 so that the outer portion of each gear segment is disposed outwardly of the adjacent snuffer wall and meshes with a rack on a reciprocating finger piece. In the other construction of lighter a serrated wheel 5, Fig. 10, has an integral tubular extension 16 on which a resilient steel pawl disc 21, Fig. 6, is mounted and the wheel face between the tubular extension 16 and the periphery is shaped to form a circular row of ratchet teeth, each tooth comprising an inclined surface 18, a surface 19 parallel to the plane of the wheel and a radial surface 20 at right angles to the plane of the wheel. The pawl disc 21 is provided with a circular passage 21a slightly greater than the tubular extension 16 on the serrated wheel and with a dished portion 21b surrounding the circular passage which prevents any substantial movement of the pawl disc either toward or from the serrated wheel when the parts are assembled. The disc 21 is slotted in a radial and part circumferential direction to form an angularly displaced pawl tooth 21c on the same side as the dished portion 21b and the upper surface of the disc is shaped to conform to the interior surface of the snuffer. Fig. 14 shows another method of mounting the pawl disc 21. A tubular shaft 24 is secured in the passage of the serrated wheel and has a peened-up end which retains the disc 21 in position on an enlarged portion 24b of the shaft extending outside the wheel passage. The axle 3, Fig 3, on which the various parts are mounted extends through aligned passages 2a in a pair of spaced standards 2 secured to the top of the lighter casing and has a reduced end portion 3c forming a shoulder 3b which can be brought into binding engagement with the inner surface of the adjacent standard by means of a screw the head of which engages the outer surface of the same standard thus positively preventing rotation of the axle during the operation of the lighter.