Historical information
A clamp is a fastening device to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. The tool is for temporary use for positioning components during construction and wood working. There are many types of clamps available for many different purposes. Some are temporary, as used to position components while fixing them together, others are intended to be permanent. A C-clamp or G-clamp is a type of clamp device typically used to hold a wood or metal work piece, and often used in carpentry and welding.
C-clamps or G-clamps are typically made of steel or cast iron, though smaller clamps may be made of pot metal. At the top of the "C" is usually a small flat edge. At the bottom is a threaded hole through which a large threaded screw protrudes. One end of this screw contains a flat edge of similar size to the one at the top of the frame, and the other end usually a small metal bar, perpendicular to the screw itself, which is used to gain leverage when tightening the clamp. When the clamp is completely closed, the flat end of the screw is in contact with the flat end on the frame. When the clamp is actually used, it is very rare that this occurs. Generally some other object or objects will be contained between the top and bottom flat edges.
Physical description
A steel ‘C’ or ‘G’ Clamp used to hold a wood or metal work piece, used in carpentry and welding.
Inscriptions & markings
L.W.BANK
