It can be used to tighten or loosen the screw as well. Flat head screwdriver is hard to turn the screw with quarter inch wide head. The thickness of the slot of the screw and the thickness of the screwdriver should match. The perfect match of thickness enables you tighten it tightly.
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The Phillips screwdriver was created by Henry F. Phillips (1890-1958) who was a U.S. businessman from Portland, Oregon . The Phillips-head ("crosshead") screw and screwdriver were both named after him .
The Phillips head screw was invented by an obscure employee from the Ford Motor Company named Alexander Pendrew in 1923. He devised this screw to isolate the manufacture and repair of Ford products. A person was required to Push Hard (PHillips) to install it easily but the design caused removal to be more difficult thereby ensuring that the screw would remain installed even during vibratons caused by driving conditions at the time.I think it was patented in the 1930s. It was invented to provide an "automatic screw-driver" function on assembly lines. When the screw was tightened sufficiently, the bit would start to slip.That is, unlike the TORX screw, the Philips-head was not for the purpose of increasing the torque on screws.Henry F. Phillips formed the Phillips Screw Company in 1934, and after refining the design himself (U.S. Patent #2,046,343, U.S. Patents #2,046,837 to 2,046,840) for the American Screw Company of Providence, Rhode Island, succeeded in getting the design quickly adopted by industry.
That crosspoint, with side fillets, was designed by the Phillips company, the company of Henry F. Phillips, the founder. The screw head is named after them. Phillips found this shape of drive head provides an easy method of aligning/centralizing a screw onto a driver bit on production lines. It was also an early attempt at security. A link is provided to the Wikipedia article on Mr. Phillips, and a picture of the head of the fastener that bears his name can be seen there.
The phillips head screw was invented in the 1930's and received its patent in 1936.
You use a Phillips screw driver on a Philips screw.
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Philips Phillips
in chicago state where he had made the screw driver
a Phillips head screw driver
Tightening or loosening screws.
Use a Phillips screw driver.
Phillips head (the star lookin one) and Flat head (the flat one) :)
You will need a flat head screw driver, a regular phillips head screw driver, and a hammer.
The Phillips screwdriver was created by Henry F. Phillips (1890-1958) who was a U.S. businessman from Portland, Oregon . The Phillips-head ("crosshead") screw and screwdriver were both named after him .
The best way to choose the right driver bit for a specific screw or fastener is to match the bit type to the screw head type. For example, use a Phillips bit for Phillips screws and a flathead bit for flathead screws. It's important to ensure the bit size matches the screw size to prevent stripping or damaging the screw head.
The correct bits are called torques bits. Perhaps a 1.5 torques bit would be used to get to the tail light assembly. However, a regular Phillips screw would call for a #2 Phillips screw-driver.