xtreme outward position: In this position it is the front wheels of the car arrive opposite the curved end An improvement in that class of devices known to the of the lever, E, the car is pulled by the draught animals hardly necessary to explain that both rails of the main line publicas ‘‘… … of a center-board con- switch. structed of two or more When the movement of the hand lever is reversed, pieces or leaves, so that they may be folded and opened and elevated and depressed and it is lowered in the opposite direction, as shown in Fig. of the track, thereby crowding theopposite end and…
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