US2527289A

US2527289A - Hinged telescope sight mount

Info

Publication number: US2527289A
Application number: US27519A
Authority: US
Inventors: Roy E Allen
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-05-17
Filing date: 1948-05-17
Publication date: 1950-10-24
Anticipated expiration: 1967-10-24

Description

2:3".2-49. QR 29527a289 5?? ct. 24, 1950 R, E, ALLEN 2,527,289

HINGED TELESCOPE SIGHT MOUNT Filed May 1'7, 1948 2 Sheets-Sheet 1 Oct. 24, 1950 R E, ALLEN 2,527,289

HINGED TELESCOPE SIGHT MOUNT Filed May 17, 1948 2 Sheets-$116911 2 lllf l IN VEN TOR.

Roy` E. Allen Patented Oct. 24, 1950 ollibll KUUM UNITED STATES PATENT OFFICE This invention relates to telescopic gun sights and particularly to mounts adapting such sights to swing laterally from their use positions. Except for long range shooting a telescopic sight is not advantageous, and is an obstacle at short ranges to employing of the usual open sights which lend themselves to rapid firing. In recognition of this fact, various laterally swingable telescopic sights have been designed, but without achieving various advantages `inherent in the present invention.

An object of the invention is to provide a swinging mounting for a telescopic gun sight, suited to be installed without mutilation of a gun or any detraction from the original design, and requirlng a minimum of skill and effort to install.

Another object is to provide a mounting of the described character suited to frictionally retain the telescopic sight in its positions of use and non-use, and adapted to accurately regulate the friction applied for such purpose.

Another object is to provide a. swinging mounting for a telescopic sight that will lend itself to convenient use of such internal focusing and windage adjustments as are a common feature of such sights.

Another object is to minimize wear resulting from recoil stresses, in installing a swingable telescopic sight on a gun.

These and various other objects are attained by the construction hereinafter described and illustrated in the accompanying drawings, wherein:

Fig. 1 is a top plan view of the receiver portion of a rifle, equipped with my improved mounting for a telescope, showing the latter in use position.

Fig. 2 is a side elevational view of the same.

Fig. 3 is a cross sectional view of ,the same, taken on the line 3-3 of Fig. 2.

Fig. 4 is a cross section similar to Fig. 3 but showing a non-use position of the telescope.

Fig. 5 is across section taken on the line 5-5 of Fig. 2.

Fig. 6 is an enlarged sectional detail of a pivot of the improved mounting, taken on the line 6-6 of Fig. 4.

Fig. 7 is a vertical sectional detail of the rear mounting plate, taken on the line 1-1 of Fig. 4.

In these views, the reference character I designates the receiver of a rifle, 2 the stock thereof, 3 the trigger, 4 the trigger guard, and 5 a telescope. The telescope is embraced by two suitably spaced supporting rings 6, which are split as indicated at 'l and firmly clamped on the telescope by screws 8 spanning the splits of such rings. The rings are similarly exteriorly formed lll with short supporting arms 9 which receive the` screws 8, and are drilled and tapped to further rigidly receive threaded portions of two aligned pivot pins I0. (See Fig. 6.) The axis of such pins is parallel to that of the telescope and also to the rie barrel Ina. Said pins have nonthreaded portions rearwardly projecting from the arms 9 and journaled in bearings II formed on front and rear mounting plates I2 and I3. These plates surmount the receiver and are fixed thereon by screws I3a at front and rear of an elongated loading and ejection opening I4 in the receiver top. The bearings I I are disposed above the receiver and at one side of the medial longitudinal vertical plane of the receiver, thus establishing a location of the pivot pins minimizing requisite length of the arms 9 and also adapting their arcuate travel to Ibe a minimum. For reasons hereinafter stated, it is preferred to form each arm 9 with a frusto-conical rearwardly projecting annular boss I5, accommodating the pin I Il of such arm, said bosses fitting into conforming sockets in the front ends of the bearings II. Also it is preferred to form the rear extremities of the pins I0 with heads I6 set into said bearings and compressing springs I'l against internal shoulders I8 of the bearings. The illustrated springs I1 are of a split washer type.

The mounting plate I3 comprises a lug I9 projecting sufficiently forward to serve as a seat for the rear clamping ring 6 when the telescope is disposed for use. The telescope seats on the mounting plate I2 independently of the front clamping ring, the latter having clearance from the receiver and said mounting, in positioning the telescope for use. It is preferred to afford the telescope a travel of ninety degrees between its positions of use and non-use, the latter position being established, as is clear from Fig. 4, by contact of the arms 9 with the receiver.

It will be evident from preceding description that the construction is quite simple and hence relatively inexpensive, requiring no springs, other than the split spring washers I1, and no latches or detents. The frusto-conical bosses I5 inserted in the bearings I I provide for ample frictional resistance to maintain either limiting position of the telescope, such resistance being raised or lowered by increasing or diminishing the compression imposed on the washers I1.

From the standpoint of resisting wear and prolonging the useful life of the described mounting, disposal of the two arms 9 to abut the front ends of the bearings Il is of importance. Recoil stresses thus cannot be directly transmitted from 3 the plates I2 and I3 to the arms 9 but must act through the pins II), being imposed on the heads of said pins by the shoulders I8. Any wear on said shoulders or the pins may be readily taken up by an adjustment of the pins in the arms.

`The coned bosses I5 in addition to their function of regulating friction, also serve to establish the true pivotal axis of the arms 9, eliminating such slight inaccuracy as might result from rotational freedom of the pins I0 in the bearings Il.

It will be understood that the telescope will have the usual internal adjustments for regulating the line of sight, these being no feature of the present invention.

One of the desirable features of the described mount is its ease of installation and the fact that such installation requires no cutting away or other mutilation of the gun stock.

What I claim is:

1. In combination with the receiver of a gun and a sighting telescope, a pair of front and rear mounting plates secured on and spaced longitudinally of the receiver, a pair of rings clamped on and spaced longitudinally of the telescope, a pair of arms respectively rigidly projecting from the respective rings, and means pivoting the arms on said plates in substantial parallelism with the telescope and with the medial vertical plane of the receiver, one of said plates extending 4 .beneath the corresponding clamping ring in the use position of the telescope and providing a seat for such ring.

2. The combination set forth in claim 1, said seat-forming plate being the rear plate, the tele scope having direct seating engagement with the front mounting plate.

ROY E. ALLEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,083,288 Lowe Jan. 6, 1914 1,742,699 Fellows Jan. 7, 1930 2,051,428 Tatlow Aug. 18, 1936 2,193,094 Gilbert Mar. 12, 1940 2,425,130 Shelley Aug. 5, 1947 2,451,266 Whittemore Oct. 12, 1948 2,452,145 Pike Oct. 26, 1948 FOREIGN PATENTS Number Country Date 142,545 Germany 1903 468,237 Great Britain 1937 663,177 France 1929