Title:
Telescopic gun sight
United States Patent 2275631


Abstract:
This invention relates to a telescopic gun sight, the general object of the invention being to locate a box-like member intermediate the ends of the sight device with a pair of frames slidably arranged in the box-like member and each provided with a wire extending across the same, with means...



Inventors:
Johnson, Clarence R.
Application Number:
US39762441A
Publication Date:
03/10/1942
Filing Date:
06/11/1941
Assignee:
Johnson, Clarence R.
Primary Class:
International Classes:
G02B27/36
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Description:

This invention relates to a telescopic gun sight, the general object of the invention being to locate a box-like member intermediate the ends of the sight device with a pair of frames slidably arranged in the box-like member and each provided with a wire extending across the same, with means for moving one frame horizontally and the other vertically so that the cross wires can be adjusted for elevation and windage.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which: Figure 1 is an elevational view of the improved telescopic sight.

Figure 2 is a top plan view thereof.

Figure 3 is an end view looking toward the front of the device.

Figure 4 is a section on the line 4-4 of Figure 2.

Figure 5 is a section on the line 5-5 of Figure 4.

Figure 6 is a view of one of the frames.

In these views the letter A indicates a boxlike member which includes a rectangular frame part I and the end pieces 2 which are connected with the frame part by the screws 3. A short threaded barrel 4 is fastened in a centrally arranged hole in the front end piece 2 while a long barrel 5 is fastened in a centrally arranged hole in the rear end piece 2. The free end of this barrel 5 carries the usual lens 6 and an eye piece 7 of tubular form is threaded on the barrel 4 and this eye piece carries the usual lens 8. Thus the eye piece is adjustably connected with the barrel 4 and it is locked in adjusted position by the lock nut 9 on the barrel 4. A pair of rectangular-shaped frames 10 and I I is slidably arranged in the box-like member, the frame 10 carrying the horizontal cross wire 12 which is suitably connected with the frame and extends across the same while the frame I carries the vertically arranged cross wire 13 which is suitably connected with the frame 11, these cross wires being arranged on the adjacent faces of the frames as shown in Figure 4 so that they will be close together and preferably the ends of these wires are located in grooves 14 formed in the frames. A spring 15 tends to move the frame 10 upwardly and this spring is seated in a groove 16 in the frame I and a similar spring 17 tends to move the frame II toward one side of the frame I and this spring 17 has one end bearing against the frame II and its other end is located in a groove 18 in the frame 1. A screw 19 is threaded in a hole 20 in the top of the frame 10 and has a shank 21 passing through a hole in the top of the frame I and a knurled disk 22 is fastened to the upper end of the shank for turning the screw. A spring detent 23 is carried by one of the end pieces 2 for engaging any one of a plurality of recesses 24 in the inner face of the disk 22 to hold the disk in adjusted position. A similar screw with its shank and knurled disk 25 is used for moving the frame II horizontally, the screw of this assembly 25 engaging a threaded hole 26 in said frame 11 as shown in dotted lines in Figure 5.

As will be seen, the springs 16 and 17 tend to hold the two frames 10 and 11 in certain positions but by turning the screws by their disks the frames will be adjusted, one vertically and the other horizontally so as to adjust the cross wires 12 and 13 relatively to each other to permit the sight formed by the cross wires to be adjusted for elevation and windage. Of course, the horizontal wire is for elevation and the vertical wire for windage and it will be seen that each wire carrying frame can be adjusted independently of the other wire carrying frame. By removing the screws 3 either one of the end pieces can be removed for examination of the internal parts.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended claims.

Having described the invention, what is claimed as new is: 1. In a sight of the class described, a box-like member of rectangular shape, a pair of frames slidably arranged therein and at right angles to each other, each frame being of considerably less width than that of the box-like member, with the end edges of one frame slidingly engaging two opposed side walls of the box-like member and the other frame having its end edges slidingly engaging the other two opposed side walls of the box-like member, said frames having their i5 inner faces in sliding contact, a spring for holding each frame against a part of the box-like member, each spring engaging a side edge of a frame and holding the opposite side edge against a side wall of the box-like member, a screw threaded in a hole in each frame and having a shank passing through the box-like member with a knob on the outer end of the shaft, said screw when the knob is turned moving the frame against the spring, a vertical cross wire carried by one frame and a horizontal cross wire carried by the other frame, the inner face of each frame having oppositely arranged grooves therein receiving the ends of the wire with said ends of the wire fastened in said grooves.

2. In a sight of the class described, a boxlike member, a pair of frames slidably arranged therein and at right angles to each other, a spring for holding each frame against a part of the boxlike member, a screw threaded in a hole in each frame and having a shank passing through the box-like member with a knob on the outer end of the shaft, said screw when the knob is turned moving the frame against the spring, a vertical cross wire carried by one frame and a horizontal cross wire carried by the other frame, said boxlike member including a rectangular-shaped frame in which the first-mentioned frames are slidably arranged and end members detachably connected to the frame of the box-like member, and said end members having centrally arranged holes therein for receiving the inner ends of the Ssections of a barrel.

SCLARENCE R. JOHNSON.