Patent GB-190326886-A (GB)
Title: Improvements in or relating to Transmission Mechanism particularly applicable to Self-propelled Vehicles.
Inventor: IONIDES ALEXANDER GEORGE
Filed: 1903-12-08
Granted: 1904-12-08
Abstract: 26,886. Ionides, A. G. Dec. 8. Motor road vehicles.-Relates to rotary transmission mechanism and change - speed gearing, primarily intended for motor road vehicles, but stated to be generally applicable, and consists of an elastic coupling adapted for re-starting the motor, and an epicyclic change-speed and reversing gearing. (1) The elastic transmission medium in the coupling shown in Figs. 1 and 2, is a coiled spring A, the inner end of which is fixed to a sleeve on the driven shaft D, and the outer end to the casing E, the casing E being normally rotated by the motor through the star-shaped piece G, and pawls F, which engage with internal teeth in a ring E'. The ring E<1> is frictionally connected to the casing E, by a clamping-ring e<1>, held in place by bolts e and springs e<2>. A suitable band brake E<2> or like means prevents backward rotation of the casing E. When it is desired to stop the vehicle, brakes are applied to the road wheels or to the driven part of the gear, and the motor continues running until stopped by the increased resistance of the spring A, when the pawls F fall inwards and engage with teeth in a wheel D', which is fixed to the driven shaft D. The act of releasing the brakes frees the inner end of the spring, which, in uncoiling, rotates the shaft D and starts the motor, by means of the wheel D<1> and pawls F. When the motor has attained sufficient speed, the pawls F fly outwards, and engage with the teeth in the ring E<1>, driving the casing E as before. (2) The epicyclic changespeed gearing, shown in Fig. 3, gives two speeds forward, one reverse, and free engine, and is intended to be used in combination with the elastic coupling, but may be used independently. Several small pinions B<2> are carried by a frame consisting of the three parts B<3>, B', B<5>, the.frame being loose on the shaft D. The pinions B<2> gear with internal teeth in the loosely-mounted casing B<6>, and with a spur-wheel D* which is keyed to the shaft D. A flange H<1>, fixed to the driven shaft H, forms an internal and external conical clutch surface, with which the parts B<5>, B<6> tend to engage, pressure being exerted for this purpose by the springs B<7>. The parts B<5>, B<6> are disengaged from the flange H<1>, and are at the same time kept from rotating, by the non-rotating conical clutch members J, K. When the clutch members J, K are both disengaged by being moved towards one another, the spring B<7> forces the parts B<5>, B<6> into engagement with the part H<1>, so that the shaft D drives the shaft H direct, giving the highest speed. The slow speed is obtained by fixing the part B<6>, the flange H<1> being then clutched to, and driven by, the part B<5> of the pinion carrying frame. The reverse speed is obtained by fixing the pinion-carrying frame, and allowing the flange H<1> to be driven by the part B<6>. When both the part B<6> and the pinion-carrying frame are fixed, the flange H<1> and driven shaft H are disconnected from the driving-shaft D.