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hand screw

[ hand skroo ]

noun

  1. a screw that can be tightened by the fingers, without the aid of a tool.
  2. Also called hand-screw clamp. Carpentry. a clamp having two wooden jaws that are adjusted by two long screws.


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Word History and Origins

Origin of hand screw1

First recorded in 1755–65
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Example Sentences

“That Carl Montana for one ” Joe dismissed the cop with an arrogant wave of his hand, “Screw him.”

Variable points of cut off with the Meyer’s valve may be obtained by shifting the position of the eccentric that operates the cut off valve, but it is usually done by means of moving the valve by a right and left hand screw, such as shown in Fig.

Hand′-saw, a saw manageable by the hand—also the same as Hern′shaw, in the proverb, 'not to know a hawk from a handsaw;' Hand′-screen, a small screen used to protect the face from the heat of the fire or sun; Hand′-screw, an appliance for raising heavy weights, a jack; Hand′spike, a bar used with the hand as a lever.—n.pl.

The best examples of this class of engine have neat heavy bed-plates, well-designed cylinders and details, smooth-working valve-gear, the expansion-valve adjusted by a right and left hand screw, and regulation secured by the attachment of the governor to the throttle-valve.

The automatic screw machine, for instance, costs many times more than the hand screw machine, but it has largely displaced the hand machine nevertheless.

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hand's-breadthhand scroll