Cutting by use of rotating axially moving tool – Miscellaneous – Drill guide
Patent
1979-08-06
1981-08-04
Hinson, Harrison L.
Cutting by use of rotating axially moving tool
Miscellaneous
Drill guide
408112, B23B 3900
Patent
active
042819490
ABSTRACT:
Abstract disclosed herein is a combination depth gauge and level for a drill characterized in that a plunger mechanism is attached to the drill by means of a band type clamp. Overlying the plunger, there is provided a ruler capable of sliding within the trackway to extend out beyond the drill and bit so that the depth of a hole to be drilled can be accurately gauged. The plunger mechanism includes a casing having a spring disposed therein and the plunger is biased against the spring and has a terminal portion preferably in the shape of a cross. In use and operation, the plunger is depressed against the surface upon which the drilling is to be done, and therefor the correct angle of the drilled hole can be assured. Once the plunger has been depressed up to the length of the ruler as it has been extended beyond the drill, the depth of the hole thus drilled can be accurately determined and controlled.
REFERENCES:
patent: 1590643 (1926-06-01), Neuwelt
patent: 2831376 (1958-04-01), Daniels
patent: 3077129 (1963-02-01), Carles
patent: 3550481 (1970-12-01), Jensen
patent: 3707043 (1972-12-01), Jones
patent: 3746460 (1973-07-01), Lipe
patent: 4113404 (1978-09-01), Lippacher et al.
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