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It consists of a series of interconnected, folding supports that resemble the shape of a pair of scissors, hence its name. The scissor mechanism is widely employed in various applications, including scissor lifts, folding tables, adjustable height platforms, and automotive jacks. [2]
For example, rock can weigh between 150-175 lb; [2] a suitable rip-rap boulder comparable to a 96 inch A-Jacks unit (about 36 c.f.) would weigh about 5800 pounds, about 16% more than the A-Jacks unit. A-Jacks also have the advantage of being interlocking and self-stabilizing.
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] A leadscrew operates this automotive scissor jack.
Jackscrews are integral to the scissor jack, one of the simplest kinds of car jack still used. A scissor jack use the mechanical advantage of a leadscrew and 4-bar linkage to allow a human to lift a vehicle by manual force alone. They are inexpensive and are common in manufacturer-supplied breakdown kits. The jack shown at the left is made for ...
A man wanted for questioning in the death of a woman set ablaze on a subway train is seen in a combination of still images from surveillance video in New York City on Dec. 22, 2024.
The Ultra-Fab Sundowner, also called the Sundowner Convertible, is an American ultralight aircraft that was designed by Bob Leinen and produced by Ultra-Fab. The aircraft was supplied as a kit for amateur construction .
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