COLLIMATING DEVICE FOR TELESCOPIC SIGHTS

• US 3,744,133 A
• Filed: 04/15/1971
• Issued: 07/10/1973
• Est. Priority Date: 04/15/1971
• Status: Expired due to Term

• Current Assignee: Susumu Fukushima, Willard H. Korte
• Original Assignee: Susumu Fukushima, Willard H. Korte
• Inventors: Fukushima, Susumu, Korte, Willard H.
• Primary Examiner(s): Martin, Jr., William D.
• Application Number:
  US05/134,241
• Time in Patent Office: 817 Days
• Field of Search: 33/46AT,5A 35/25 350/209,205
• US Class Current: 42/121
• CPC Class Codes: F41G 1/54 Devices for testing or checking ; Tools for adjustment of sights

Abstract

A collinating device for telescopic sights utilized in connection with a firearm is shown which includes a bore supported member and an upstanding member upon which sighting indicia are disposed. The sighting indicia preferably are in the form of a grid pattern disposed upon a film member. The bore supported member is formed with a tapered stem portion and a plurality of compressible oppositely laterally extending elements which are carried by the rear of the stem portion. The stem portion is tapered and includes the dimensions of 0.17 inches to 0.45 inches so that it can be accommodated within the bore of the generally utilized calibers of firearms. The sighting member is formed with a lower stem portion and an upper dished circular portion provided with an opening therewithin. The film member bearing sighting indicia is disposed across the opening. A method of utilizing the device of this invention is also shown.

Claims

1. A collimating element for use in collimating a telescopic sight to a rifle comprising, in combination, a bore supported member having an integral body formed with a uniformly laterally outwardly projecting circular cap at one end thereof, a circular rearwardly and inwardly tapering intermediate portion and a pair of oppositely and outwardly tapering spring members at the opposite end thereof;

an upstanding member connected to said bore supported member having an integral body formed with a support portion and a laterally projecting substantially circular base portion provided with a first opening therewithin adapted to accomodate said bore supported member and an upper laterally projecting substantially circular dished portion provided with a second opening therewithin, said dished portion projecting laterally to a greater extent than the lateral projection oF said base portion, film securing means within said dished portion and a film member having sighting indicia thereupon disposed within said dished portion overlying said opening and secured therewithin by said securing means.

2. A device as described in claim 1 said film securing means comprising a pair of oppositely disposed prong members above and below said second opening.

3. A device as described in claim 1 said film securing means comprising a pair of V-shaped spaced portions oppositely disposed within said dished portion lateral to said opening therewithin.

4. A device as described in claim 3 said film also having a pair of mating recesses, each of said recesses adapted to accomodate one of said V-shaped portions.

5. A device as described in claim 4 each of said V-shaped portions and each of said recesses being of a different size so that the wrong recess cannot be utilized in assembly of the parts.

6. A device as described in claim 5 said sighting indicia upon said film member being in the form of a grid pattern.

7. A device as described in claim 6 the sighting indicia upon said film member comprising a series of spaced concentric circles and a set of cross-hairs upon said concentric circles.

8. A collimiating mechanism adapted to collimate a telescopic sight to a rifle comprising, in combination, a pair of elements, the first of said elements being a light reducing member adapted to fit over the objective lens of a telescopic sight, said light reducing member having a front face provided with an aperture therewithin, a plano-convex lens covering said aperture and said light reducing member also having a substantially circular lateral holding portion;

the second of said elements being a sighting member having a portion thereof adapted to fit within the bore of a rifle and an additional portion adapted to extend upwardly from said rifle and in alignment with said light reducing member,said sighting member comprising a bore supported member having an integral body formed with a uniformly laterally and outwardly projecting circular cap member at one end thereof, a circular rearwardly and inwardly tapering intermediate portion and a pair of oppositely and outwardly tapering spring members at the opposite end thereof;

an upstanding member connected to said bore supported member having an integral body formed with a support portion and a laterally projecting substantially circular base portion provided with a first opening therewithin adapted to accomodate said bore supported member, and an upper laterally projecting substantially circular dished portion provided with a second opening therewithin, said dished portion projecting laterally to a greater extent than the lateral projection of said base portion, film securing means within said dished portion, and a bearing sighting indicia thereupon disposed within said dished portion and held by said securing means.