Machine element or mechanism – Elements – Guard mechanisms
Patent
1992-07-13
1993-06-15
Bonck, Rodney H.
Machine element or mechanism
Elements
Guard mechanisms
74609, 408241G, F16P 100
Patent
active
052188876
ABSTRACT:
A drill chuck and revolving spindle guard for protecting a person operating machine with a revolving spindle comprising: a mounting bracket for attachment about a machine part having a revolving spindle; a pawl adapted to fall into a slot in a block attached to the mounting bracket; a locking block through which a threaded shaft is disposed to permit pivoting for swinging the guard in and out of working position in relation to a work-piece; a threaded shaft around which a compression spring is spirally wound to permit height adjustment of the guard; a compression spring for holding the guard in a locked position; a locking nut disposed at a base of the threaded shaft around which the compression spring is wound to hold the guard fast after height or position adjustments; a guard bracket upon which a base portion of the nut rests; a guard having a semi-circular configuration; whereby the guard bracket is attached to an arc of the semi-circular guard so that when the guard is moved to a drill change position by an upward push on the guard bracket to lift the pawl out of the locking block, there is a pivot motion of the guard in a counterclockwise direction to cause locking of the guard in a changed position.
REFERENCES:
patent: 1447987 (1923-03-01), Johnson
patent: 2491035 (1949-12-01), Deacon
patent: 3293941 (1966-12-01), Schwabe, Jr.
patent: 4043701 (1977-08-01), Jaeger
patent: 4884927 (1989-12-01), Menger
Bellamy Werten F. W.
Bonck Rodney H.
Lane Anthony T.
Massey Ryan W.
Reichert Earl T.
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