Directing instrument

Details Directing instrument Directing instrument

1974-07-31

1976-08-24

Aegerter, Richard E.

Geometrical instruments

Indicator of direction of force traversing natural media

Structurally installed including relation to feature thereof

33341, 33349, 33366, 33370, 33395, 33397, 33401, B23B 4900, G01C 914, G01C 916

Patent

active

039758311

ABSTRACT:
A directing instrument for control of the inclination of the drill post of a drilling apparatus comprising means for sensing the inclination of the post in two directions at right angles to one another. Said means being supported by a holder arranged to be mounted rotatably on said post and so that the axis of rotation of said holder can be set relative to the post dependent on the type of operation to be carried out.

REFERENCES:
patent: 1289904 (1918-12-01), Poor
patent: 2437132 (1948-03-01), Sinks
patent: 2464911 (1949-03-01), White
patent: 2834118 (1958-05-01), Jackson
patent: 3167049 (1965-01-01), Foster

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