Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 163
-impulse stop, zvith a tzvo-degree alternative brakingand variable speed control. 148 Frank T- SPrague, [J. F. I. In this, also, the track equipment is identical with that in theforeg^oinc^ examples. Nos. i, 2 and 3. The engine equipment is the same as in No. 3, except thatthere is provided either… … Variable speed-brake controller. The operation is the same as in No. 3, except that if the speedin passing an active brake magnet exceeds the maximum whichis safely controllable with manual service braking equal to theprimary automatic braking provided, withn the required stoppingdistance, then the…
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