Improvements in Interlocking Apparatus for the Operating Levers of Railway Signalling Appliances.

摘要

21,875. Hodgson, P. F., and Saxby & rarmer. Oct. 4. Hand-levers, interlocking. - The operating- levers 2 are interlocked by tappets connected to a rocking member 7 operated by the handle 14 through the link 12. Projections 7a, 7b may be provided on the rocker 7 to lock the lever by engagement with the ribs 16, 16a, 16b; a projection 14a on the handle 14 may also lock the lever 2. In order to release the lever 2, the handle 14 is moved to the dotted line position, thus rocking the rocker 7 and releasing the lever 2, which may then be moved to the position X. During the last part of the stroke the pin 18 engages the link 12 and lifts the pin 11 in the slot 10 without moving the rocker 7. At the end of the stroke the spring 21 replaces the handle 14, the projection 14a entering the notch 17, and the rocker 7 moves further from its normal position so as to cause the projection 7b to enter the notch 17b. Suitable end stops for the lever 2 are provided.