Fig. 2.—Side seetion 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… … has the apparatus shown other weight being natu- any signs of breaking un- rally lowered out of the View Shows the Contact for Signaling “Road Clear.” der the enormous strains way. imposed upon it. On the engine is a small In the first type of ap- box from which extend paratus the inventor relied…
Internet Archive · Public domain (published before 1931). Free to use for anything.
