Sighting in apparatus for rifle mounted telescope gunsights

Details Sighting in apparatus for rifle mounted telescope gunsights Sighting in apparatus for rifle mounted telescope gunsights

1977-05-05

1978-06-20

Stephan, Steven L.

Geometrical instruments

Straight-line light ray type

Aerial bomb sight

33245, 33295, F41G 138, G01C 1508

Patent

active

040953475

ABSTRACT:
A support rod is adjustably secured to a gauge body which is counterweighted at its lower end such that it will hang upright in a pendulum arrangement when the rod is inserted in the muzzle end of a gun barrel. A vertically adjustable sighting target is mounted on the sighting gauge. A holder attachment having radially adjustable chuck-type jaws and arranged to support a lens is adapted to be mounted on the front of a telescope gunsight. The lens brings the sighting target into focus through the telescope. The holder attachment supports a first removable insert at its front end which has the lens therein, and this attachment is arranged to support a second insert on the other end having a peep-hole therethrough for more precisely aligning the telescope with the indicia on the sighting target. The holder attachment is also arranged to support the second insert in lieu of the first insert whereby a second holder attachment with the second insert therein can be mounted on the rear of the telescope and used in combination with a first insert on a holder on the front of the telescope to provide still greater accuracy for sighting in the gunsight.

REFERENCES:
patent: 1295075 (1916-11-01), Sheppard
patent: 3112567 (1963-12-01), Flanagan
patent: 3744133 (1973-07-01), Fukushima
patent: 3908282 (1975-09-01), Steffan

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