Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 161
ay and loco- 146 Frank T. Sprague. IJ. F. I. motive it is possible to assemble an equipment which will meetanything from the minimum to the maximum of traffic demands,according to the amount of protection and control required, andwith, of course, corresponding variations in initial and main-tenance… … Air valve assembij- mounted under cab. With this equipment there are the following possibilities:I. Single-impulse stop. In this, the track equipment of but one normally active trackmagnet per block may be under either manual or automatic con-trol of traffic conditions. The engine equipment…
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