Geometrical instruments – Straight-line light ray type – Multisight line
Patent
1992-11-16
1994-11-15
Wirthlin, Alvin
Geometrical instruments
Straight-line light ray type
Multisight line
33248, 33298, 359428, F41G 138
Patent
active
053635590
ABSTRACT:
A telescope inner tube locking device and method for positively locking the telescope inner tube in it's previously aligned position. The locking is accomplished by using a biased locking screw which operates to apply a force against the inner tube of the telescope while the windage and elevation adjustment screws on the telescope are moved. Thereafter, the biased locking screw locks the inner tube against the windage and elevation adjustment screws. In a modification of the preferred embodiment, the inner tube of the telescope may also be locked by using a locking screw constructed similarly to the elevation or windage screws in combination with a separate spring bias. The separate spring bias will apply a force against the windage and elevation screws of the telescope and the locking screw will lock the inner tube in place. The tube may also be locked by a third locking screw without using a bias. The methods disclosed herein use the applicant's invention to positively lock the inner tube in it's desired aligned position so that an accidental dropping or jarring of the firearm or heavy recoils of the firearm will not result in a misalignment of the previously aligned inner tube of the telescope.
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Burris Company
Capraro Michael A.
Von Behren Norvell E.
Wirthlin Alvin
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