Elongated-member-driving apparatus – With means to move or guide member into driving position – With means to assure correct orientation of member
Patent
1979-02-23
1981-03-03
McQuade, John
Elongated-member-driving apparatus
With means to move or guide member into driving position
With means to assure correct orientation of member
227130, B25C 104
Patent
active
042535980
ABSTRACT:
An improved power-driven hammer driver tool is provided wherein a pneumatically- or hydraulically-operated piston mounting a cylindrical rod-shaped hammer is designed to impart a vertically-oriented impact to an indexed fastener within the tool. A face plate is mounted between the driver tool foot portion, and an attached fastener feeding magazine. The face plate defines part of the hammer bore and incorporates an inclined semi-cylindrical fastener guide groove that enables a misaligned impact-driven fastener to be oriented into alignment by a camming action imparted to the fastener tip, thereby resulting in a fastener "anti-jamming" function that assures proper entry of the previously misdirected fastener into a waiting work surface.
REFERENCES:
patent: 3067724 (1962-12-01), Jenny et al.
patent: 3554428 (1971-01-01), Smith
patent: 3893610 (1975-07-01), Smith
patent: 3908884 (1975-09-01), Schrepferman
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