ily be madegood enough. Summary of Mechanical Requirements The requirements and functions whichmust be reflected in the mechanical equip-ment of trailers may be summarized asfollows with special reference to each ofthe four types and to train formation : Four-wheel Trailers—Operation byone person,… … Twill screw jacks hinged to trailer frame and ar-ranged to be folded away by chain and winch. Bothjacks are rawed or lowered in unison by a crankfrom either side, but each may he adjusted inde-pendently 266 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE February 10, 1921 motor unit, approximate oras close as…
Automobiles · Aeronautics
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