Method of forming a notched edge lock screw

Details Method of forming a notched edge lock screw Method of forming a notched edge lock screw

1979-10-05

1981-09-15

Baldwin, Robert D.

Metal working

Method of mechanical manufacture

With testing or indicating

403323, 411349, 411378, 411403, F16B 1902

Patent

active

042889022

ABSTRACT:
Die insert lock screws are formed for threaded engagement within corresponding threaded holes formed in a retainer having a socket within which a die part insert is positioned, with a portion of each of the screw heads normally overlapping the socket and fitted within a groove in the insert. The screw heads each are provided with a circumferentially elongated notch which can be aligned with the adjacent insert surface portion and retaining socket wall portion for disengaging the screw heads from their grooves for thereby unlocking the insert. Each notch is aligned lengthwise, generally perpendicularly to the socket wall so that maximum face to face area contact is provided between the bases of the screw heads and the retainer when the screw heads are tightened against the retainer for locking the insert.

REFERENCES:
patent: 459361 (1891-09-01), Gregory
patent: 591798 (1897-10-01), Strauss
patent: 872712 (1907-12-01), Church
patent: 2017247 (1935-10-01), Hodge

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