Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1979-10-12
1982-01-12
Stephan, Steven L.
Geometrical instruments
Straight-line light ray type
Structurally installed
F41G 100
Patent
active
043098274
ABSTRACT:
An improved adjustable sighting device for archery bows wherein the various sighting screw units employed, and as mounted to a suitable mount apart or attachable to a bow, can be made incrementally adjustable not only as to azimuth or windage but also vertically. In particular, and as to vertical adjustment, the device includes releasable locking means whereby sighting screwunits can be releasably fixed in a chosen position and yet sighting released and adjusted for other vertical positions. A serrated slide-lock member may be employed with serrated margins of slots provided in the sighting screw mount. Importantly, and preferably, a rack-pinion arrangement is provided as between mounting plate slots and a sighting screw adjustment member whereby, even though the locking nut of the sighting screw unit is released, the device will still not fall downwardly relative to the slot but rather can be finally adjusted as to vertical orientation prior to nut re-lock.
REFERENCES:
patent: 2542501 (1951-02-01), Fredrickson
patent: 2574599 (1951-11-01), Stieber
patent: 3136063 (1964-06-01), Stebbins
patent: 3475820 (1969-11-01), Kernan
patent: 3599337 (1971-08-01), Snodgrass
patent: 3667444 (1972-06-01), Depatie
patent: 3674002 (1972-07-01), Diamond
patent: 3766656 (1973-10-01), Westphal
patent: 3849894 (1974-11-01), Broughan
patent: 4026032 (1977-05-01), Smith
patent: 4162579 (1979-07-01), James
patent: 4170071 (1979-10-01), Mann et al
Stirling Instrument, catalog of products, 1969 Catalog, p. 265.
Shaffer M. Ralph
Stephan Steven L.
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