Phillips Head Screw Origin at Lavon Shirley blog

Phillips Head Screw Origin. The official history from the robertson screw company says that robertson, a canadian inventor and industrialist, cut himself when the blade slipped during a demonstration of a new. In 1933, henry phillips purchased the rights to a socket screw and redesigned it with a cruciform recess, creating the crosshead phillips screw. Unlike slot screws, they were self. Henry phillips of the phillips screw company in portland, ore., invented a screw that would take more torque than the usual screw with its single slot, on which the screwdriver would be easily centered and would be. In 1933, henry phillips purchased the rights to a socket screw and redesigned the screw with a cruciform recess.

In 1933, henry phillips purchased the rights to a socket screw and redesigned it with a cruciform recess, creating the crosshead phillips screw. Henry phillips of the phillips screw company in portland, ore., invented a screw that would take more torque than the usual screw with its single slot, on which the screwdriver would be easily centered and would be. Unlike slot screws, they were self. The official history from the robertson screw company says that robertson, a canadian inventor and industrialist, cut himself when the blade slipped during a demonstration of a new. In 1933, henry phillips purchased the rights to a socket screw and redesigned the screw with a cruciform recess.

Screws With Different Heads at Earl Harmon blog

Phillips Head Screw Origin Unlike slot screws, they were self. In 1933, henry phillips purchased the rights to a socket screw and redesigned the screw with a cruciform recess. Unlike slot screws, they were self. In 1933, henry phillips purchased the rights to a socket screw and redesigned it with a cruciform recess, creating the crosshead phillips screw. The official history from the robertson screw company says that robertson, a canadian inventor and industrialist, cut himself when the blade slipped during a demonstration of a new. Henry phillips of the phillips screw company in portland, ore., invented a screw that would take more torque than the usual screw with its single slot, on which the screwdriver would be easily centered and would be.

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