Fig. 2.—Side section view of box showing general ar- him to come to a stop as soon as possible. rangement with gong actuated by oscillations of trigger after ter, and in a short time the spring would be so weak- The Brierley apparatus is extremely simple, both in passing over contact, and reverse… … The Large View Pictures the Rocker When the Semaphore is at Danger, Showing the Danger Trigger has the apparatus shown other weight being natu- Passing Over and Making the Contact Which Rings the Bell in the Engine Cab. The Small any signs of breaking un- rally lowered out of the View Shows the…
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Internet Archive · Public domain (published before 1931). Free to use for anything.
