n Stop cocks should be placed on both the gas and air pipes toward or away from the scraping portion. those already stated, is the facility with which it may be near the machine in the vault; also on the gas pipe near the The lever, I, being turned, operates the rock shaft, G, gjadually introduced… … the cheapest possible manner, the manufac- cai couplings that have been devised is a want NORTHROP'S AUTOMATIC CAR COUPLING. of simplicity, a multiplicity of parts which, turers of which, by false representations, make large profits. Never allow a machine to be placed in by their expensive…
Patents · Iron · Boiler · Feet · Improved · Scientific American · Consists · Fire engine · Steam engines · Floating fire · Cast Iron · Horse power · Science record · Narrow gage · Floating station · Patents granted
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