. Science of railways . ck Cord Take-Up. for the insertion of a new card, without disconnecting thecord from the engine crosshead. This mechanism consists ofa handle operated pawl which engages a ratchet on the drumcarriage. When the Detent Motion is employed a convenientmethod of taking up the slack cord is found in the introduc-tion of a rubber band as shown in the accompanying illustra-tion, Fig. 6. This band must be of sufficient strength andlength to take up all slack in the cord, which slack is equalto the stroke of the drum. This arrangement shown in theaccompanying view, will prevent b
. Science of railways . ck Cord Take-Up. for the insertion of a new card, without disconnecting thecord from the engine crosshead. This mechanism consists ofa handle operated pawl which engages a ratchet on the drumcarriage. When the Detent Motion is employed a convenientmethod of taking up the slack cord is found in the introduc-tion of a rubber band as shown in the accompanying illustra-tion, Fig. 6. This band must be of sufficient strength andlength to take up all slack in the cord, which slack is equalto the stroke of the drum. This arrangement shown in theaccompanying view, will prevent breakage of the cord whenthe drum is stopped. When this takes place, the rubber bandcontracts, taking up all slack between the points where it isknotted to the cord. 604 LOCOMOTIVE APPLIANCES. The Cord Guide Pulley of the Tabor Indicator permits thecord to be led off in any direction. After being adjusted itcan be securely locked in position. The adjustment pre-vents breakage of cord, due to its catching in the pulley or. Fig. Guide Pulley—Tabor Indicator. other parts. Likewise the base on which the Cord GuidePulley is mounted can be moved to any position in a horizontalplane and rigidly secured. The two adjustments in thispulley give a flexibility which is of great, value in practicaloperation.
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