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Scientific American, Vol. 37, No. 24 (December 1877) (1877)
leaf 7
or drilling, and is furnished with steel spur been much simplified in the mechanism for the feed and the the effects of expansion and contraction, while it nray be and pointed centers. The rest has all the adjustments com- easily removed-f or renewal or repairing. percussion. The piston of the… … ing of the bridge being re- per stroke of the piston is 8u moved as desired by drawing THE CORRUGATED IRON AIR BRIDGE AND FUEL ECONOMIZER. cubic inches. © 1877 SCIENTIFIC AMERICAN, INCPatents · Crank · Patented · Slotted · Pin · Iron · Crank pin · Address · Fire proof · Blister beetles · Scientific American · Second larva · Wrist pin · Patent slotted · Connecting rod · Wrought iron · American supplement
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