to inquire carefully into the ble saving in power. gines for motive power. As the pressure rises, it cost of production and a demand arose for compressors The airendofthis machine is fitted with the Rand soon reaches a point to which the plunger of the reg- embodying the highest and most advanced… … the capacity of the tween the two cyl- THE RAND COMPOUND DUPLEX AIR COMPRESSOR AT THE COLUMBIAN EXPOSITION. machine, this inter- inders is an inter- change of action be- cooler through tween the two regulators is constantly taking place. which the air must pass in its progress from the low valves,…
Gas · Patents · Air · Munn · Scientific American · Adapted · Largest circulation · Gas motors · Rand drill · Carbonic acid · Nitrous acid · Sewing machine · Storage battery · Horse power · Gas engine
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