Removable rifle sight

• US 4,102,053 A
• Filed: 07/11/1977
• Issued: 07/25/1978
• Est. Priority Date: 07/11/1977
• Status: Expired due to Term

• Current Assignee: Stephen Earl Colwell
• Original Assignee: Stephen Earl Colwell
• Inventors: Colwell, Stephen Earl
• Primary Examiner(s): Martin, Jr., William D.
• Application Number:
  US05/814,170
• Time in Patent Office: 379 Days
• Field of Search: 33/233, 33/250, 33/242, 33/243, 33/263, 33/DIG. 1, 335/285, 248/206 A
• US Class Current: 42/136
• CPC Class Codes: F41G 1/06 Rearsights

Abstract

A fast sighting device adapted for convenient substitution in place of a conventional rear rifle sight comprising a rectangular support including a ceramic magnet supported on an eccentric cam on the interior thereof. A support further includes a front and rear locating pin, the front pin being disposed for longitudinal translation within an elongate opening, said front and rear pins being dimensioned to accommodate the conventional mounting holes for the substituted sight. Extending from the rear end of the support is a circular, vertically aligned, sight orifice, threaded on the interior over the rear segment thereof for receiving a retainer cap compressing a sight disc or other sighting device therebetween. It is intended to form the support and the sight aperture from a nonmagnetic material such as plastic, the disposition of the ceramic magnetic therein being adjustable by the eccentric cam to achieve either a contiguous alignment with the rifle barrel or a separated alignment for removal.

Claims

1. A sighting device adapted for convenient substitution for a rear sight assembly attached by way of a fore and aft tapped opening in the barrel structure of a fire arm, comprising:

a rectangularly shaped support fixture which includes a central cavity on the interior thereof communicating to the exterior across a first lateral surface of said fixture, and a fore and aft cavity respectively formed in said fixture in longitudinal relationship adjacent said central cavity;

a ceramic magnet conformed for sliding receipt in said central cavity, including a transverse bore formed thereacross;

a lever assembly mounted for pivotal motion across said central cavity and including an eccentrically disposed center segment conformed for receipt in said transverse bore;

a support plate including a longitudinal slot receipted in said fore cavity in substantially parallel alignment with said first lateral surface, said longitudinal slot being disposed in longitudinal alignment relative said fixture;

a forward pin received for translation within said longitudinal slot and extending for insertion in said fore tapped opening;

an aft pin attached within said rear cavity and extending for receipt within said aft tapped opening; and

a sighting aperture assembly formed on said fixture in adjacent proximity relative said aft pin.

2. Apparatus according to claim 1 wherein:

said sighting aperture assembly comprises a sighting ring extending normally above said fixture in substantially opposing relationship to said aft pin, a sighting disc receivable within said sighting ring, and a threadably engaged retainer received in said sighting ring for compressing said disc therebetween.

3. Apparatus according to claim 2 wherein:

said first lateral surface of said fixture is conformed to mate with the subjacent exterior surface of said fire arm.

4. Apparatus according to claim 3 wherein:

said ceramic magnet is dimensioned for vertical articulation within said central cavity according to the eccentric motion of said center segment, the exterior surface of said magnet being formed to align with said first lateral surface when said lever assembly is in a first state and being withdrawn into the interior of said central cavity when said lever assembly is in a second state.

5. Apparatus according to claim 4 wherein:

said lever assembly includes a manually articulated lever on the exterior of said fixture disposed for articulation between said first and second states.

6. Apparatus according to claim 5 wherein:

said fixture lever assembly, and sighting aperture all comprise nonmagnetic structure.