Drill steel guide
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 19, 1982
Grant Date -
N/A
app pub date -
Oct 10, 1979
filing date -
Oct 10, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill steel guide or clamp for use with mine roof drilling and bolting machines which guides and clamps the drill steel relative to a standard but which can be kicked out of the way by the advancing drill pod after which time the guide is no longer required for the particular bolt hole being drilled. The clamped guide comprises a clevis body pivotally secured to the standard having two retaining arms individually pivotally mounted to the clevis for rotation into clamping and guiding relation with the drill steel. A unique palm lock comprises extensions for embracing the retaining arms to prevent rotation of the arms out of guiding relationship with the drill steel. The palm lock is arranged to be unlatched when struck by the drill pod or kick plate attached thereto as the drill pod pushes the guide out of the way as it advances.
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