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A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.
Sometimes there are two chains, one on each side of the coupler. The chain usually contains a screw-adjustable link to allow close coupling. These variants are also used elsewhere. On sharp curves, a single centre buffer is less likely to be subject to buffer-locking. The Eritrean Railway also uses a centre buffer and chain coupler.
A hex screw drive uses six-sided fastener heads, and the fastener is known as a hex head cap screw. It can be turned with an adjustable wrench, combination wrench and 6- or 12-point sockets. The hex drive is better than square drive for locations where surrounding obstacles limit wrenching access, because smaller wrench-swing arcs can still ...
The small range was made up for, though, in the number of variations for each car model. For example, there were 7 Ford Model A body styles alone, including a Sedan, Station Wagon, Coupe, Roadster, Roadster Pickup, Victoria, and Phaeton. The 1932 Chevrolet kits were made in phaeton, roadster, and coupe versions. Another venerable model was the ...
A light push against the resistance of the central pivot screw then spreads the legs to the correct dimension and provides the required, consistent feel that ensures a repeatable measurement. The lower caliper in the image has an adjusting screw that permits it to be carefully adjusted without removal of the tool from the workpiece.
A Schnabel car or Schnabel wagon is a specialized type of railroad freight car. It is designed to carry heavy and oversized loads in such a way that the load makes up part of the car. It is designed to carry heavy and oversized loads in such a way that the load makes up part of the car.
A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderate and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses. [citation needed]
Cabriole legged marble topped table. A cabriole leg is one of (usually) four vertical supports of a piece of furniture shaped in two curves; the upper arc is convex, while lower is concave; the upper curve always bows outward, while the lower curve bows inward; with the axes of the two curves in the same plane.