en & Co. (Incorporated), of ing opposite a notched quadrant and having a retain- the engine, Fig. 2 being an interior view of Philadelphia, Pa., is constructed in ing latch, the sprocket chain may be held in such en- one-half of the cylinder. In the central bore gagement with the sprocket wheel… … ends with another similarly fulcrumed lever, which is The microscope requires certain arrangements to PARMENTER'S ELEVATOR. also a hand lever. On the latter lever is a segment bring a full course of light with as little heat as possi- with segmental slot engaged by a bolt on the slide, so ble to…
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
Internet Archive · Public domain (published before 1931). Free to use for anything.
