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Scientific American, Vol. 38, No. 6 (February 1878) (1878)

leaf 4

An illustration from Scientific American, Vol. 38, No. 6 (February 1878), 1878, leaf 4
pinion on the crank shaft, working through a train wheel begins to revolve, and power is thus applied to the air inlet passage; and second, in a movable chimney for the of spur wheels and pinions gearing into a pinion fast on the crank arm, the front arm, A, being rigidly fixed to the shaft, escape… … fioiently to fold there are placed the wheel but KNIGHT'S IMPROVED DIGGING MACHINE. levers which npt to stop the work dogs in- same. To obtain tended to take hold of the snow and thus assist in steering. very slow motions the brake is employed as already in- for every twenty-two of the former.…

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