. Railway age . Boynton Train x: I r-| n Card ana Vertical Section of Boynton Indicator. these units, the cogs at U>ree points on the quadrant and the pinionare replaced by smooth surfaces, convex and concave, lock the slat in position, and also allow enough play at theseIK>lnls to compensate for errors In adjiL^tmcnt of the operaUngwires, which. If ordinary gearing were used, would leave the , .. . sido of the slat out of parallel with the front of the Indicator. Each sided slats 120 ; can be shown (by putting the card on the slat may be
. Railway age . Boynton Train x: I r-| n Card ana Vertical Section of Boynton Indicator. these units, the cogs at U>ree points on the quadrant and the pinionare replaced by smooth surfaces, convex and concave, lock the slat in position, and also allow enough play at theseIK>lnls to compensate for errors In adjiL^tmcnt of the operaUngwires, which. If ordinary gearing were used, would leave the , .. . sido of the slat out of parallel with the front of the Indicator. Each sided slats 120 ; can be shown (by putting the card on the slat may be removed for relettering without disturbing the rest of upper or lower bed plate) or 180 stations It four-sided slats, with the mechanism. Pinion and Quadrant Mechanism; Boynton Indicator. can be printed and the holes then punched out The drawing showsa card for an Indicator In which there are two columns of stationnames. The card has CO station name spaces, so that with three- March 20, 1908. THE RAILROAD GAZETTE. 423 These indicators
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Keywords: ., bookcentury1800, bookdecade1870, bookidrailwayage44, bookyear1870
