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Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.
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 ...
A typical simple screwdriver has a handle and a shaft, ending in a tip the user puts into the screw head before turning the handle. This form of the screwdriver has been replaced in many workplaces and homes with a more modern and versatile tool, a power drill, as they are quicker, easier, and can also drill holes. The shaft is usually made of ...
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SKIL Power Tools is a brand of electric power tools and accessories located in Naperville, Illinois, United States. [1] It is a subsidiary of Chervon (HK) Ltd, ...
In 1976, Western Forge shipped its 100 millionth Craftsman screwdriver. [5] In 2008, the company produced its billionth screwdriver overall. [3] In 1978, Western Forge applied for and received its USA trademark. [6] They produced and test marketed a line of hand tools branded with their own name. In 1981, the company was acquired by Emerson ...