. Digest of United States automobile patents from 1789 to July 1, 1899, including all patents officially classed as traction-engines for the same period. Chronologically arranged ... together with lists of patents in the classes of portable-engines, traction-wheels, electric locomotivs, and electric railway battery systems ... . ?a^n (^UJ^.i^(^ ^ ^^J^^-^X^ ^m- TRACTION ENGINES 327 No. 311,630, F. W. ROBINSON. TRACTION ENOINE. Patented Feb. 3, 18:^ ^ Jjmvnior. J. C. BARKER. TRACTION ENGINE. No. 312,630 4 Shfleu—31eei 1 ted Feb. 24, 1885.


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Keywords: ., bo, bookcentury1900, bookdecade1900, bookiddigestofunitedst00alle