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It was spotted by Rudy Smith, who commissioned Paul Martin to improve it. [11] [12] Smith then installed the modified model in a gym he was managing at the time, Vic Tanny's gym in Los Angeles. [13] By the end of the 1950s, Rudy Smith was an executive in Tanny's chain of gyms, and the Smith machine was being manufactured and sold more widely ...
The Scott Russell linkage (1803) translates linear motion through a right angle, but is not a straight line mechanism in itself. The Grasshopper beam/Evans linkage, an approximate straight line linkage, and the Bricard linkage, an exact straight line linkage, share similarities with the Scott Russell linkage and the Trammel of Archimedes.
Smith machine bench press The bench press or dumbbell bench-press is performed while lying face up on a bench, by pushing a weight away from the chest. This is a compound exercise that also involves the triceps and the front deltoids, also recruits the upper and lower back muscles, and traps.
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Close-up shot of a diamond-pattern knurling on a cylindrical work piece. Knurling method: left/right with tips raised, spiral angle: 30°, pitch: 1 mm, profile angle: 90° Knurling is a manufacturing process, typically conducted on a lathe, whereby a pattern of straight, angled or crossed lines is rolled into the material. Knurling can also ...
Straight tail lathe dogs. A setup is shown with faceplate, drive stud, headstock center, dog and workpiece. Bent tail lathe dog hooked on chuck jaw. A lathe dog is a mechanical device typically made of cast iron, steel or aluminum that transmits rotary motion from a faceplate to a workpiece mounted between centers in a lathe. [1]