Word: tractor
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...wings with upturned tips extend from each side of the fuselage. The tail structure is 8 ft. wide and has boxed double rudders, double fins, an upper (elevator) and a lower (stabilizer) tail plane. When the tail planes are deflected they meet and act as a single plane. The tractor propeller is 81 in. over all and operated by a Genet-Major five-cylinder radial motor which develops 100 h.p. at 2,400 r.p.m...
...peculiar part of the autogiro is, of course, its four horizontal vanes. Their orbit is 30 ft. in diameter, extending over the tail and beyond the tractor motor...
When he was ready to fly Señor de la Cierva started his tractor motor with his landing wheel brakes on. Then he had a bystander give his vanes a shove. They wobbled around about once a minute. He speeded up his motor and the propeller slipstream made the vanes rotate rapidly, about 130 r.p.m., according to their speedometer. The vanes vibrated. To smooth that out he idled his motor for five seconds. Then he released his brakes, sped up the motor again, taxied to his takeoff. The vanes were turning smoothly at 120 r. p. m. and creating...
...Maryland field and among sand dunes at 42 m. p. h. It was the newest thing in combat tanks. Powered by a 12-cylinder Liberty motor, it rushed 62 m. p. h. down a road on eight hard-rubber tires. In 14 minutes it was converted into a caterpillar tractor, ready to hurtle its ten tons, its three-man crew, its full armament, cross-country nearly four times as fast as any tank similarly armored had moved before...
More recently (TIME, June 17) contracts have been let to other U. S. corporations-for a 100-million-dollar hydro-electric power plant in the Ukraine (to be the world's largest); for steel mills, coal mines, apartment houses in Moscow, tractor factories at Stalingrad, etc. etc. After 1933, Industrializer Stalin promises, if there is still necessity, to turn to lesser tasks-such as keeping the population supplied with food and clothing...