. The American railway; its construction, development, management, and appliances . Section of Saxby & Farmer Interlocking Machine(Showing two levers and locking mechanism. Anormal, B is reversed.) FACING-POINT LOCKS. 205 ward in the direction of the arrow B. The first movement of thesignalman in the signal-tower would naturally be to lower signals. *Tri Diagram of a Double-track Junction with Interlocked Switches andSignals. A is the west-bound main line track ; B, the east-bound ; C and D are the west-bound and east-bound branch-tracks. Nos. 1, 10, and 12 are distant signals; Nos. 2. 9, and
. The American railway; its construction, development, management, and appliances . Section of Saxby & Farmer Interlocking Machine(Showing two levers and locking mechanism. Anormal, B is reversed.) FACING-POINT LOCKS. 205 ward in the direction of the arrow B. The first movement of thesignalman in the signal-tower would naturally be to lower signals. *Tri Diagram of a Double-track Junction with Interlocked Switches andSignals. A is the west-bound main line track ; B, the east-bound ; C and D are the west-bound and east-bound branch-tracks. Nos. 1, 10, and 12 are distant signals; Nos. 2. 9, and II, home signals ; Nos. 3, 6, and 8, facing-pomt locks ; and Nos. 4. 5, and 7 , m are switches. The levers which move all of these parts are placed side by side in a frame in the signal-tower. It willbe noticed that No. 7 is a switch designed merely to derail an engine on track A. A similar switch is provided ontrack C, and is worked by the same lever which works junction switch No. 5. In the sketch all levers are supposed tostand in iheir • normal position, all signals are a danger, and the switches are set for the main line. The switchesthemselves are nut locked in this position < f the facing-point lock levers. I and 2. He attempts to pull over lever i, but cannot move it,and, in spite of any effort or ingenuity on his part, that sig
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