. Railway maintenance engineering, with notes on construction . a; o o o .s CO O o c3C o t-H 328 RAILWAY MAINTENANCE When the lever is thrown the latch is dropped, and this releasesthose levers which are to be thrown next. The dog chart, Fig. 179, is the working drawing by whichthe locking is laid out and is a diagram of the locking as itappears in the machine. The locking sheet is prepared before. Fig. 180.—Saxby and Farmer^s Interlocking Machine. the dog chart is made and shows the locking required for eachlever. The normal position of the lever and function it controlsis the danger position
. Railway maintenance engineering, with notes on construction . a; o o o .s CO O o c3C o t-H 328 RAILWAY MAINTENANCE When the lever is thrown the latch is dropped, and this releasesthose levers which are to be thrown next. The dog chart, Fig. 179, is the working drawing by whichthe locking is laid out and is a diagram of the locking as itappears in the machine. The locking sheet is prepared before. Fig. 180.—Saxby and Farmer^s Interlocking Machine. the dog chart is made and shows the locking required for eachlever. The normal position of the lever and function it controlsis the danger position. The reverse position is the clear or pro-ceed position. In the locking sheet in the column headed^^ locks the numbers in circles refer to the reversed position, SIGNALS AND INTERLOCKERS 329 and the numbers without circles refer to the normal position ofthe lever corresponding to the number. k Pitch 32-0 Radius r I -5-5^
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
