US1184395A

US1184395A - Sight for firearms.

Info

Publication number: US1184395A
Application number: US2907115A
Authority: US
Inventors: William Strubel
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-05-19
Filing date: 1915-05-19
Publication date: 1916-05-23
Anticipated expiration: 1933-05-23

Description

W. STRUBEL.

SIGHT FOR FIREARMS.

APPLICATION FILED MAY19,1915.

1 ,1 84,395. Patented May 23, 1916.

[3km 28 F1' I* 3 10 ATTORNEYS WILLIAM STRUBEL, OF PHILADELPHIA, PENNSYLVANIA.

SIGHT FOR FIREARMS.

Specification of Letters Patent.

Patented May 23, 1916.

Application filed May 19, 1915. Serial N o. 29,071.

To all whom t may concern:

Be it known that I, WILLIAM STRUBEL, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Sights for Firearms; and I do hereby declare that the following is a full, clear, and exact description thereof, ,which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the reference-numerals marked thereon, which form part of this specification.

My present invention relates to sights for iire arms and more particularly to the rear sights for rifles.

The purpose of my present invention is to provide a fire arm sight of improved construction and one that is'readily and accurately adjustable to different ranges and at the same time is compact and not liable to be disarranged or injured by contact with other things.

A further purpose of my invention is to provide an adjustable sight having a plate member tensioned to bear toward the barrel and having said plate member provided on its lower surface with an incline or with a series of steps or notches with which a sliding member interposed between the barrel and said plate will engage and raise the plate to varying heights as the slide is adjusted.

A further purpose in a sight such as described is to have the slide extend beyond the sides of the plate and afford gripping surfaces for the convenient and positive movement of said slide.

A still further purpose of my invention is to provide a qualifying or correcting adjustment in connection with the main adjustment for different ranges and particularly to provide an adjustable sight composed of a yielding plate and a slide therebelow for the main adjustment to different ranges with a secondary or qualifying or correcting adjustment. My purpose is to have such qualifying adjustment of such construction and operation that it may be readily operated when the main adjustment is at any given range and such secondary adjustment will be carried forward or backward with a similar correcting effect to any other step or position of the main adjustment without further operation or attention.

Further purposes and advantages of my invention will appear from the specification and claims herein.

Figure 1 is a plan view of a sight embodying my invention as applied to a section of a rifle barrel. Fig. 2 is a side view of said sight. Fig. 3 is a plan View of the plate as viewed from beneath. Fig. 4 is a side view of the same member. Fig. 5 is a cross seetional view on an enlarged scale on line 5 5 of Fig. 2. Fig. 6 is a top view on an enlarged scale of the slide and the bridge mounted thereon. Fig. 7 is a side View of the slide and Fig. S is an end View thereof on a similar scale. Also on an enlarged scale Fig. 9 is atop or plan view of the bridge and Fig. 10 a side view of the same member. Figs. 11 and 12 are plan and end views respectively on an enlarged scale of a slide having the bearing edges on an integral or fixed part thereof instead of upon a movable bridge. Fig. 13 is a side view of the plate 15 having the downturned side flanges slanting downwardly as they extend toward the rear.

Referring to the drawings in a more particular description: the sight is secured to the barrel 14 by the plate 15 having one end, preferably its forward end, securely xed to the barrel in any desired way as by a screw 24 holding the plate to a key 16 fitting into an undercut recess 17 provided in the top of the barrel 14 and extending transversely thereof. The plate 15 extends lengthwise of said barrel and has its free end slightly spaced from the top of the barrel 14 and tensioned to bear toward said barrel through said plate being of slightly resilient material. Preferably the free end will extend toward the rear of the barrel in order to get the sight piece 18 which is at the extreme end of the free part of the plate as far toward the rear of the barrel as possible, although it is obvious that the free end of the sight may be forward of the fastened end of the plate without losing the structural advantages of my invention.

From about midway of the plate 15 toward its free end, the plate is provided with downturned flanges 2O at its sides, the lower edge 2l of said flanges being at an incline @Larra-tiental relative to the axis of the barrel 14 and slanting upward from the barrel as the flanges extend to the rear. f Said inclined edges 21 are composed of a series of notches 22 with intervening and preferably rounded steps 23 leading from notch to notch.

Just forward of the side flanges 20 the plate l5 is provided with an upwardly extending offset 25 whereby the plate 15 to the rear of said offset extends parallel with the top of the barrel but at some distance therefrom providing room for the downturned flanges 20. A short distance beyond the rearward step 23 the plate 15 is turned down in a loop 26 toward the top of the barrel and then turned upward forming the sight piece 18 at the extreme end of the plate, said sight piece being provided with a sight notch or other device 27.

Interposed between the raised portion toward the free end of the plate 15 with its downturned and inclined side flanges 20 and the barrel 14 is the sliding member or slide 28, preferably having its bottom curved or shaped to substantially fit the usual curve or other shape of the barrel 14. v

The slide extends at each side beneath the inclined flanges 2O upon the plate 15, and outside of said flanges the slide is extended upwardly adjacent to the outer surface of said flanges thus preventing sidewise displacement of the slide. The sides of the slide beyond the flanges 20 are also preferably extended both forwardly and rearwardly, as indicated particularly in Figs. 1, 6 and 7. This extension lengthwise of the sides gives a long base to the slide preventing any tendency to tip or roll over when the slide is moved longitudinally of the barrel. The upward and longitudinal extension of the outwardly projecting

sides

31 and 32 of the slide 28 also affords a more extensive surface to be grasped between the thumb and finger for the movement of the slide. The exterior surfaces of said

sides

31 and 32 are knurled or otherwise roughened to afford a convenient gripping surface for said purpose.

In the top of the slide member or slide 28 is mounted a bridge 33 extending across the slide 28 and beneath the oppositely disposed inclined fianges 20 upon the plate 15. The bridge 33 is mounted in a groove 34 in the slide 28 so that the said bridge is carried longitudinally of the barrel when and as the slide 28 is moved in either direction along the barrel. Movement of the bridge 33 longitudinally of its containing groove is prevented by the said bridge being provided with enlargements 35 at either side fitting into correspondingly shaped recesses 36 in the central part of the slide 28. The bridge is adapted, however, to be moved up and down relative to said slide and in its Said containing groove. As means for Areadily and accurately adjusting the elevation of the bridge relative to the slide, there is vertically mounted in the central portion of the bridge 33 and in screw-threaded engagement therewith, a set-screw 37 of a length substantially the depth of said bridge.- Upon the proper tool being applied to the top of said screw 37, the screw may be turned down in said bridge thereby in an obvious manner raising the bridge relative to the slide, it being understood that the lower end of the said set-screw 37 bears against the bottom of the groove 34 in said slide.

Toward either end of the bridge 33 and beneath the inclined and notched flanges 20, bearing points 38 are provided upon the said bridge to engage the said notched fianges 210 and to raise the plate 15 thereby as the slide is moved longitudinally of the barrel. Preferably the said bearing points 28 are formed by the bridge 33 being provided with two pairs of oppositely disposed

slanting faces

39 and 40 slanting upward toward each otherl to form the bearing edge or point 38. The slanting faces at both sides of said bearing edges coperating with the slanting or rounding steps 23 between the notches 22 in the downturned flanges 20, operate by a camming action to raise the resilient plate 15 as the slide is forced back and forth upon the barrel. The coperating slanting sides and the tendency of the plate 15 to bear strongly toward the barrel enables the operator to readily stop the slide at the desired notch in either forward or backward movement of the slide upon the barrel.

The slide 28 and its bridge 33 may be readily assembled upon the 'barrel after the plate 15 is secured in place by temporarily lifting the free end of said plate enough to allow the slide and the bridge mounted therein to be moved longitudinally of the barrel beneath the downwardly extending loop 26 near the free end of the plate 15. When needed' the slide and its bridge may be removed by similarly raising the free end of the plate 15. When the slide and the bridge are in place beneath the plate 15, the pressure of the plate holds the slide and bridge firmly together and in place while at the same time admitting longitudinal movement of the slide upon the barrel. The downturned loop 26 prevents the slide being moved from beneath the plate by ordinary movement of the slide.

It will now be obvious that assuming the y sight piece 18 at the extreme end of the plate. A convenient arrangement of the parts is to have the rearmost position of the slide raise the sight piece to proper position for the nearest range desired, say one hundred yards, and to have the parts so proportioned that successive advancements of the slide would raise the sight to successive further ranges such as two hundred yards, three hundred yards, four hundred yards, and so on. Withdrawing the slidev from forward position would allow the sight to be lowered proportionately through the tension of the plate 15 by`lowering the sight piece as far as the slide and the bridge would allow.

Assuming that the main adjustment either at first position or at any subsequent position is found by test to be incorrect, the secondary or qualifying adjustment is brought into play by turning down the set-screw 87, slightly, thus raising the bridge and thereby the sight piece 18 without movement of the slide 28 until by test the complete sight is correct for the range being tested. Ordinarily such testing for accuracy will be made with the slide at the rearmost position. After the qualifying adjustment at given range has been made, movement of the slide carries a proportionate correction to other points of the main range adjustment without further operation of the secondary adjustment. In this way the slide may be moved forward or backward to procure the vdesired different ranges without destroying or affecting the correcting adjustment that has been once obtained. It will be understood, of course, that the notches 22 are accurately positioned and placed to obtain the desired difference in elevation of the sight piece 18 to obtain the correct ranges of the fire arm at the different distances desired.

Figs. 11 and 12 are plan and end views respectively of a modified form of my invention as far as relat\es to the main adjustment. rl`he modification consists in making the bearing edges 42 upon an integral or fixed part of the slide 28 instead of upon a bridge movable in relation to said plate. It will be seen that this modification obtains the advantages of my construction and invention in so far as the main adjustment is concerned but does not admit of the secondary or qualifying adjustment hereinbefore described.

The modification shown in Fig. 13 consists in having the inclined flanges upon the plate 15 slope toward the barrel as the rear end of the plate is approached rather than the reverse as shown in Fig. 4. It will be obvious that this modification will result in the sight being raised as the slide is moved rearwardly and lowered as the slide is moved forwardly. Access to the top of the set-screw 37 for the purpose of regulating the secondary or qualifying sight is at all times afforded by a central longitudinally extending slot 41 being provided in the portion of the plate 15 that is raised or between the downturned fiange 20. For the sake of compactnessl and convenience the central part of the slide 28 projects somewhat into this slot 41 and it is in this upwardly projecting'part of the slide that the central portion of the bridge with its adjustable screw 37 is housed.

What I claim as new and desire to secure by Letters Patent is:

1. The combination in a fire-arm sight of a lire-arm barrel, a plate extending longitudinally of the barrel and having one end secured thereto and the other end spaced from and yieldingly tensioned to bear toward the barrel and provided therebeneath with a surface inclined relative to the axis of the barrel, a member slidingly interposed between the said incline and the barrel and adapted to move the free end of the plate to different heights by movement to different portions of said incline, means on the plate for holding said sliding member in desired position relative to said incline, a sight piece on the free end of said plate and a bridge interposed between said slide and said inclined surface on the plate and adjustably mounted in said slide to raise said plate from said slide.

2. The combination in a lire-arm sight of a fire-arm barrel, a plate extending longitudinally of the barrel and having one end secured thereto and the other end spaced from and yieldingly tensioned to bear toward the barrel and provided therebeneath with a surface inclined relative to the axis of the barrel, a member slidingly interposed between the said incline and the barrel and adapted to move the free end of the plate to different heights by movement to different positions upon said incline, means on the plate for holding said slide in desired position relative to said incline, a sight piece on the free end of said plate and an adjustable member operatively connected to said slide and adapted to vary the combined height of said member and said slide, whereby said plate is further raised or lowered.

3. The combination in a fire-arm sight of a lire-arm barrel, a plate extending longitudinally of the barrel and having one end secured thereto and the other end spaced from and yieldingly tensioned to bear toward the barrel and provided therebeneath with a surface inclined relative to the axis of the barrel, a member' slidingly interposed between the said incline and the barrel and adapted to move the free end of the plate to different heights by movement to different portions of said incline, means on the plate for holding said sliding member in In witness whereof I have affixed my sigdesired position relative to said incline, a, sight piece on the free end of said plate and a bridge mounted with screw adjustment in the top of said slide and engaging said incline whereby said plate is raised or lowered relative to said slide.

11th day of May 1915.

WILLIAM STRUBEL. Witnesses:

HARRISON Ur. CAssEL,

CHARLES EBERLE.

five cents each, by addressing the Commissioner otl'atentl,

Copies of this patent may be obtained for Washington, D. 0.

nature, in the presence of two witnesses, this