hand screw

American  

[hand skroo] / ˈhænd ˌskru /

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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Etymology

Origin of hand screw

First recorded in 1755–65

Example Sentences

The main valves are connected by a right and left hand screw, to enable their adjustment, as are also the cut-off valves.

From Mechanical Drawing Self-Taught by Rose, Joshua

Turn in the hand screw on the oxygen regulator until the small pressure gauge shows a reading according to the requirements of the nozzle being used.

From Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon by Manly, Harold P. (Harold Phillips)

Plate XVI, and a set of brick and special dies, a hand repress for paving brick, and a hand screw press for dry pressing.

From Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171 by Wilson, Herbert M.

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

From Cyclopedia of Telephony and Telegraphy, Vol. 2 A General Reference Work on Telephony, etc. etc. by McMeen, Samuel

To trim the book, a plough was used, made of two thick side pieces of hard wood about one foot long and six inches high, with a long hand screw passing through them.

From The Building of a Book A Series of Practical Articles Written by Experts in the Various Departments of Book Making and Distributing by Hitchcock, Frederick H.