. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. o o„o 000000000, o INTERCHANGEABLE AUTOMOBILE. A new featurein the combinationof a pleasure car-riage and a deliverywagon. The pas-senger entrance isin front. The seatand trim can bereadily removed anda hood substitutedand the space usedfor fr
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. o o„o 000000000, o INTERCHANGEABLE AUTOMOBILE. A new featurein the combinationof a pleasure car-riage and a deliverywagon. The pas-senger entrance isin front. The seatand trim can bereadily removed anda hood substitutedand the space usedfor freight. SECTION XIII. RAILWAY DEVICES ANDAPPLIANCES, ETC. 219 Section XIII. RAILWAY DEVICES ANDANCES, ETC. APPLI- 562. BLOCK AND INTERLOCKING SIGNALS. Electro-pneumatic system. The right-hand figure shows the detail of the air piston and electric air valve. The^signal being at the entrance of a blocksection, which is, say, three-quartersof a mile long, the battery for the cur-rent is at the outgoing end; and whenthe rails of the track, throughoutthe section (and also the rails of sidetracks and crossovers, so far as theyfoul the main track) are clear—notoccupied by wheels at any point—the circuit of the battery is throughthe right-hand rail of the track to theelectro-magnet at the signal, thenceto the left-hand rail and by that backto the battery. This circuit beingclosed, the electro-magn
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
