Tractor screw — Tractor Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor… … The Collaborative International Dictionary of English
Tractor biplane — Tractor screw Tractor screw or Tractor propeller Tractor propeller (Aviation) A propeller screw placed in front of the supporting planes of an airplane instead of behind them, so that it exerts a pull instead of a push. Hence, {Tractor monoplane} … The Collaborative International Dictionary of English
Tractor monoplane — Tractor screw Tractor screw or Tractor propeller Tractor propeller (Aviation) A propeller screw placed in front of the supporting planes of an airplane instead of behind them, so that it exerts a pull instead of a push. Hence, {Tractor monoplane} … The Collaborative International Dictionary of English
Tractor propeller — Tractor screw Tractor screw or Tractor propeller Tractor propeller (Aviation) A propeller screw placed in front of the supporting planes of an airplane instead of behind them, so that it exerts a pull instead of a push. Hence, {Tractor monoplane} … The Collaborative International Dictionary of English
Tractor — Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor vehicle… … The Collaborative International Dictionary of English
tractor airplane — Tractor Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor… … The Collaborative International Dictionary of English
Tractor propeller — Tractor Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor… … The Collaborative International Dictionary of English
truck tractor — Tractor Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor… … The Collaborative International Dictionary of English
List of Historic Mechanical Engineering Landmarks — The following is a list of Historic Mechanical Engineering Landmarks as designated by the American Society of Mechanical Engineers since it began the program in 1971. The designation is granted to existing artifacts or systems representing a… … Wikipedia
Timeline of Russian inventions and technology records — The Hall of Space Technology in the Tsiolkovsky State Museum of the History of Cosmonautics, Kaluga, Russia. The exhibition includes the models and replicas of the following Russian inventions: the first satellite, Sputnik 1 (a ball under the… … Wikipedia