GB442208A - Improvements in or relating to lockable free wheel transmission mechanism - Google Patents

Abstract

442,208. Lockable one-way clutches. PULSOMETER ENGINEERING CO., Ltd., and WARREN, R., Nine Elms Iron Works, Reading. May 31, 1934, No. 16274. [Class 80 (ii)] In a one-way roller clutch wherein dogs 6 on a member 5, splined on the driving shaft 4, are adapted to engage dogs 7 in the outer driven member 1 of the clutch, so as to lock the latter, balking means for preventing engagement of the dogs until the clutch is in the overrunning condition, so as to prevent jamming, comprise a ring 16 which is mounted on the member 5 with limited angular play and which has dogs 17 similar to the dogs 6. The ring 16 is biassed by a spring 19 so as normally to lag behind the member 5. Thus, the member 5 can be moved so far as to engage the dogs 17 with the dogs 7, but further movement to engage the dogs 6 with the dogs 7 is prevented until the member 1, and with it the ring 16, overruns the member 5. The inner member 3 of the clutch has limited angular play on the shaft 4 and has teeth 12 coacting with teeth 15 on the member 5 so as to prevent engagement of the dogs 17 with the dogs 7 unless the clutch is in driving condition. The member 1 may be extended beyond the dogs 6 and be provided with a second set of dogs 25 with which the dogs 6 can be brought into engagement without any balking action by a movement of the member 5 to the left. Alternatively, means as described in Specification 442,279 may be provided for enabling the balking action of the teeth 12, 15 to be overcome when desired. Specification 441,613 is referred to in the Provisional Specification.