Improvement in engine starter gearing
Реферат: 569,234. Turning - gear. BENDIX AVIATION CORPORATION. Nov. 5, 1943, No. 18416. Convention date, Nov. 13, 1942. [Class 7 (v)] An engine starter drive comprises a powershaft 2 which may be an extension of a motor armature and carries a screw member 5, a slidable pinion 7 coacting with an engine gear 8, and a nut 9 connected to the pinion through yielding drive means, the nut and screw being connectable by a spring-urged latch 24 which disengages by centrifugal action when the starting motor attains a predetermined speed. The yielding drive comprises a deformable block 11 of rubber or the like, enclosed in a barrel 13 and bearing at one end against a nut flange 12 and at the other against a spring- urged clutch member 14 having teeth 16 engaging teeth on a member 18 fixed to pinion 7. A sleeve 23 protects the screw-threads from abraded rubber. In operation, when the power-shaft is rotated, the nut 9 and associated parts move along the shaft to engage the pinion with gear 8 and thrust ring 4. In this position, the latch engages a groove in the screw to lock the pinion and power is transmitted through the member 11 to the pinion to turn the engine. When the engine fires, the pinion overruns the drive which is resumed if the engine fails to start. When the engine starts, release of the load causes the starter motor to speed up so that latch 24 is centrifugally withdrawn. The frictional torque transmitted from the pinion 7 then moves back the nut and the parts resume the position shown in Fig. 1.
Improvements in engine starter drives
Номер патента: GB443590A. Автор: . Владелец: Eclipse Machine Co. Дата публикации: 1936-03-02.