Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 169
and one electro reset magnet per block. 154 Fraxk T- Sprague. [J. F. I. COMPARATIVE ADVANTAGES OF VARIOUS EQUIPMENTS. Of these various arrangements: No. I is the simplest, but requires either an absolute stop, whichwould interfere with traffic, or a permissive release, whichhas certain objections.… … Test train in yards. Of 3, 6 and 9, which call for hand, fixed track and traffic-controlled resets, respectively, the latter, 9, is of course tobe preferred. Again, 7 and 10 are preferable to 6 and 9, because they providefor tzijo degrees of braking with a single impulse, accordingto speed; and 10…
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