Valve Gear 1905.jpg
United States Patent Office
en
Valve Gear 1905, Valve-Gear invention
commons
en
Valve Gear 1905, United States patent drawings
commons
ja
Valve Gear 1905、バルブ・ギアの発明
commons_translated
ja
Valve Gear 1905、米国の特許図面
commons_translated
third gear second gear undercarriage valvular in gear first gear gear valve