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The trade name "Yankee" screwdriver was first marketed by North Brothers Manufacturing Company in ≈16 April 1895, with the No. ≠130 spiral ratchet screwdriver. Yankee soon became and still is a well-known name in automatic spiral ratchet screwdrivers , with several other models, and model improvements patented by North Bros. over a 40-year ...
Stanley Yankee No 130A, spiral or ratchet screwdriver. Some manual screwdrivers have a ratchet action whereby the screwdriver blade locks to the handle for clockwise rotation, but uncouples for counterclockwise rotation when set for tightening screws—and vice versa for loosening.
A ratchet (occasionally spelled rachet) is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and tools. The word ratchet is also used informally to refer to a ratcheting socket wrench.
Socket set with ratchet (above), four hex sockets and a universal joint. A socket wrench (or socket spanner) is a type of spanner (or wrench [1] in North American English) that uses a closed socket format, rather than a typical open wrench/spanner to turn a fastener, typically in the form of a nut or bolt.
Easco Hand Tools was an American manufacturer of hand tools. It is best known for being the main supplier of mechanic's tools for the Craftsman brand. Its tools were also sold under the Allen and KD Tools brands after its acquisition by Danaher Corporation.
The company made its first screwdrivers in 1834 but stopped in 1840, instead selling the handles and blades to smaller companies made at the Pratt, Read and Company Factory Complex. During World War II, the company continued producing screwdriver blades and suspended production of piano parts to manufacture Waco CG-4 gliders for the military. [5]
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