GB637014A - Improvements in or relating to the mounting of auxiliary internal combustion engine units on bicycles and the like - Google Patents

Abstract

637,014. Auxiliary engine units for bicycles. SOC. POUR TOUS APPAREILLAGES MECANIQUES S.A.T.A.M. Feb. 20, 1947, Nos. 5029 and. 5030. Convention dates, Sept. 26, 1940, and Sept 16, 1941. [Classes 79 (ii) and 79 (iii)] An auxiliary engine unit 4 is pivoted about a horizontal axis 8 on the frame of a bicycle or like vehicle and is arranged between the planes swept by the pedal cranks and the driven pinion 3 of an engine reduction gear can be engaged with an annular gear ring 2 integral with the chain wheel 1 by pivotal movement of the engine unit 4. The pivotal movement may be hand or foot controlled. As shown in Fig. 4 the pivot 8 is secured to a bracket 9 which is pivoted at 17 to a bracket 10, the brackets 9, 10 embrace the bottom bracket of the frame and are secured together through the chain stays. The pivot 17 rides in a slot 23 formed on the engine and a projection 24 of the engine unit carries a pawl 25 connected by a cable 26 operated by a handle or lever located on the handle bar of the bicycle. The cable 26 is operated so with the pawl 25 in the position' indicated in dotted lines the pinion 3 is disengaged from the gear ring and with the pawl in the position shown in full lines the pinion 3 is engaged with the gear ring 2 as shown, the' pivotal movement of the engine unit being limited by an adjustable screw 27 thereon bearing against the bracket 9. The Specification as open to inspection under Sect. 91 also comprises a construction in which the engine unit is rigidly mounted on the frame between the pedals, and an engine driven pinion is constantly in mesh with a gear ring rotatable on the chain wheel, the chain wheel and gear ring being connectable by a pin. This subjectmatter does not appear in the Specification as accepted.