Geometrical instruments – Straight-line light ray type – Multisight line
Patent
1981-01-23
1983-01-04
Stearns, Richard R.
Geometrical instruments
Straight-line light ray type
Multisight line
33242, F41G 108, F41G 126
Patent
active
043666256
ABSTRACT:
In an aiming device for sport rifles a sighting ring is concentrically supported within a tubular housing. The sighting ring consists of a hollow cylinder composed of lamellas supported at one end and having ramp-like portions at their other ends with inwardly bent fingers defining the sighting ring opening. Annular transparent discs surround the hollow cylinder, one supporting the hollow cylinder at its one end and the other being axially movable and capable of compressing the lamellas to reduce, when moved over the ramp-like portions, the size of the opening and also the outer diameter of the sighting ring. The transparent discs consist of hub sleeves and outer sleeves interconnected by radial spring-steel strips oriented in viewing direction to provide only little obstruction.
REFERENCES:
patent: 1428389 (1922-09-01), Miller
patent: 2167012 (1939-07-01), Tetzlaff
patent: 2310929 (1943-02-01), Beresky
patent: 2486940 (1949-11-01), Garber et al.
patent: 2498706 (1950-02-01), Pease et al.
patent: 3456351 (1969-07-01), Gehmann
Bach Klaus J.
Stearns Richard R.
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