Cutting by use of rotating axially moving tool – Miscellaneous – Drill guide
Patent
1992-04-03
1993-10-12
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Miscellaneous
Drill guide
33642, 409218, B23B 4900
Patent
active
052520102
ABSTRACT:
An adjustable stop assembly for use with a drill press including a ratchet bar adapted to be vertically positioned between spaced ears on the housing of the press and adapted to pass through an annular quill stop carried by the quill of the press so that the quill stop moves up and down the ratchet bar in response to vertical movement of the quill. A slide assembly is positioned on the ratchet bar and includes a slide, a ratchet dog, a stop nut, and a lock nut. The slide includes a lower annular base portion, an upper externally threaded barrel portion, and a central bore slidably passing the ratchet bar. The ratchet dog comprises a spring biased plunger mounted in the slide base portion and having an inner tip for ratcheting engagement with the ratchet bar. The stop nut and the lock nut are threaded onto the externally threaded barrel portion of the slide. To adjust the stop setting of the press, and thereby the extent to which the associated bit or other tool will be moved into the workpiece, the plunger of the ratchet dog is pulled out to release the slide, the slide is moved in a gross manner along the ratchet bar to achieve an approximation of the desired final setting, the stop nut is moved threadably on the threaded barrel portion of the slide to achieve the final precise setting, and the lock nut is rotated to lock the stop nut.
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Aiken Carl
Obrecht Robert
Howell Daniel W.
Technical Manufacturing Corporation
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