10,100. Platte, P. May 14, 1904, [date applied for under Patents Act, 1901]. Electric railways and tramways on the overhead-conductor system in which collectors of the Siemen's bow type are used.. Collectors.-Relates to the construction of bows or collectors, and also to means for supporting and controlling them. Fig. 1 shows a side elevation and Fig. 2 a plan of a collector, in which two. bows are used. The bows are supported on a frame consisting of four upwardly-converging rods 8, jointed together at their upper ends at 10 and pivoted at their lower ends to cranks 4 which can turn on the horizontal shafts 3. The frame is kept in its raised position by the pull of the spring 16 on the lever 13, or other suitable device, which is connected at its ends to the cranks 4. The frame is lowered by pulling on the rope 17. The bows can also be drawn down into a horizontal position by pulling on the rope 34, which causes the arm 32 to rotate the bell-crank lever 27, connected by the ropes 29, 30 to the bows. Springs 20 conduct the current to the motors and keep the bows in their working position ; the bows can also automatically reverse. To prevent the bows from getting interlocked, a centre bar 24 is provided. A single bow could be used in the form shown in Fig. 1 by attaching it to the common point 10 of the two sets of bars. Fig. 5 shows a modification in which three or more bows can be used. The cellector is also shown, in the Specification, as adapted for taking current from conductors placed at the side of the track. Fig. 4 shows a bow in which springs 43 are introduced in the sides and in the bar 24 in order that the bow may adapt itself to inequalities in the heights of the conductors 44, 45.
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