. The street railway review . suffi-cient motion to permit the conductor to stand upright whilethe car is passing. The hand lever, II, is bent at an angle of 100° as shownin Fig. 2. It connects, bj means of the rod L, which isabout 2 ft. long, with a casting, C, clamped to a rod, R,made of 3/j-in. pipe. A motion of the end of the handlever of 3 ft. will move the rod R S-in. A coil spring, S,attached to the lever L, pulls the apparatus back to theoriginal position when H is released. The rod R, is car-ried to the switch points in a plank conduit i ft. square andat each end is connected to one a
. The street railway review . suffi-cient motion to permit the conductor to stand upright whilethe car is passing. The hand lever, II, is bent at an angle of 100° as shownin Fig. 2. It connects, bj means of the rod L, which isabout 2 ft. long, with a casting, C, clamped to a rod, R,made of 3/j-in. pipe. A motion of the end of the handlever of 3 ft. will move the rod R S-in. A coil spring, S,attached to the lever L, pulls the apparatus back to theoriginal position when H is released. The rod R, is car-ried to the switch points in a plank conduit i ft. square andat each end is connected to one arm of a bell crank witharms 8 in. long and at right angles. The long connectingrod is supported in bearings spaced 16 ft. apart. The bellcrank at each switch is connected to a cross rod which inturn is connected to a slide holding the loose ends of two36-in. flat springs, which control the motion of the switchpoint. These springs are held in place at the opposite endsby studs screwed into the switch casting, and rest against. the end of a second slide that runs through a cored holewhich receives the center pin of the switch tongue. One of the springs only is in contact with^ the switchpoint, and the motion of the hand lever moves the switchpoint by revcrsmg the position of the bell crank and per-mitting the other spring to come into play. The one handlever moves the two switches and as the conductor boardsthe car as it passes him the switch points have returned totheir ordinary positions by the time that the car readies thefarther one, but at this latter the motion of the car is not against the switch point and the wheel flange presses thetongue aside, the spring yielding and returning to placeafter the car has passed. These switches were designed by Frederick Simmons,foreman of the companys construction shop. They havebeen in continuous use for over four years and no repairshave been required ; they are easy to operate and require noattention except an occasional oiling of th
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
