US1018224A

US1018224A - Sight for firearms.

Info

Publication number: US1018224A
Application number: US45798008A
Authority: US
Inventors: James Windridge
Original assignee: LYMAN GUN SIGHT CORP
Current assignee: LYMAN GUN SIGHT CORP
Priority date: 1908-10-16
Filing date: 1908-10-16
Publication date: 1912-02-20
Anticipated expiration: 1929-02-20

Description

OR lw0189224 WLNDRIDGE.

SIGHT FOR HREARMS.

APPLICATION FILED 00T.16, 1908.

Patented Feb. 20, 1912.

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APPLIOATION FILED 00116, 190s.

1,018,224. Patented Feb. 20, 1912,

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UNITED STATES PATENT OFFICE.

JAMES WINDRIDGE, OF MIDDLEFIELD, CONNECTICUT, ASSIGNOR TO TI-IE LYMAN GUN SIGHT CORPORATION, OF MIDDLEFIEID, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

SIGHT FOR FIREARMS.

Application filed October 16, 1908.

To all whom it may concern:

Be it known that I, JAMES VVINDRIDGE, a citizen of the United States, and resident of Middlefield, in the county of Middlesex and State of Connecticut, have invented certain new and useful Improvements in Sights for Firearms, of which the following is a full, clear, and exact specification.

My invention relates to sights for firearms.

In certain firearms of the bolt-gun type, the action of the bolt, which is adapted to being swiveled in its bearings and also reciprocated therein, prevents the employment of a fixed sight in the usual position of such sights, as the handle by means of which the bolt is operated normally. slides past the point occupied by the sight. This condition has led to the provision of a movable or swiveling sight for such arms, capable of being swung aside in each direction from its sighting position by engagement of the handle of the bolt, and normally returned by the action of a spring, as fully explained in Letters Patent of the United States, Number 558,403, granted to William Lyman April 14, 1896.

The invention which forms the subject of this application is an improvement upon that of the Letters Patent aforesaid, having for its object to provide means for insuring stability of the sight in its central or sighting position, analogous to the rigidity of fixed sights, and providing for adjustmentfor elevation, and the ready removal of the sight from its guiding bearings on the base.

The invention consists in the novel combination, arrangement, and construction of parts as hereinafter more fully described and claimed.

In the accompanying drawings forming a part of this specification Figure 1 is a plan view of the frame and action of a firearm. of the bolt-gun type. Fig. 2 is a side elevation of such frame and action, embodying my improved sight mounted on the stop-pin lever thereof. Fig. 3 is a. vertical cross section on the

line

3, 3, of Fig. 1. Fig. 4 is an elevation of the sight viewed from the position assumed in the act of sighting, or breech of the arm. Fig. 5 is a reverse elevation or that viewed from the muzzle of the arm. Fig. 6 is a plan view of the sight with dotted lines a", y, showing the swiveling Specification of Letters Patent.

Patented Feb. 20, 1912.

Serial No. 457,980.

movement of the sight arm due to the passage of the bolt handle. Fig. 7 is a horizontal section on the

line

7, 7, of Fig. 5, with the lever nut cut centrally. Fig. 8 is a horizontal section on the

line

8, 8, of Fig. 2. Fig. 9 is a vertical section on the

line

9, 9, of Fig. 6. Fig. 10 is a similar section to Fig. 8 with the swiveling sight post in the posit-ion indicated by the dotted lines jz/ of Fig. 6. Figs. 11 and 12 are respectively' end and side views of the clamping bolt.

Referring to the drawings, B designates the frame of a firearm of the bolt-gun type, which forms a bearing for the bolt D. Said bolt, in the operation of loading, in addition to its swiveling movement, is reciprocated in its bearing to an extent that carries its handle E from the position shown in Fig. 1 rearwardly through the guides A past the position of the sight shown in Fig. 2, necessitating a form of sight which is capable of being swung each way from its normal position sufhciently to permit such passage of the handle, as indicated by the dotted lines of Fig. 6. To provide for the removal of the bolt from its seat the stop pin el which limits its rearward travel, is carried upon a lever f pivoted to ears f1 on the side of the frame, and yieldingly held in the plane of a suitable stop g on the bolt, by the spring e2 pressing between the frame and the rear end of the lever. The lever, which is old and well known, comprises the means of attachment of the sight, as hereinafter described. To this end the lever f, which comprises the base of the sight, is formed with a vertical guide way L on its outer side, in which the vertical sight limb H is fitted and adapted to slide. Back of said guide way a vertical T shaped seat or groove e3 is milled in the body of the lever extending downward from the upper edge thereof. The seat receives the head e4 of a bolt e5, which projects out through a slot 71,1 in the vertical sight limb I-I nearly coextensive in length with that of the limb. The bolt has a lever nut 71,2 screwed upon its end adapted to clamp the sight limb rigidly in the guide way, whereby the sight may be secured at any required elevation within the range of adjustment provided by the slot 11,1. A set screw h3 through the lever f engaging a notch h4 in the bolt head Ve4 holds the bolt rigidly in the seat in the lever, but permits its instantaneous removal when required. Under the nut are the washer n and spring nl.

At the upper end of the vertical sight limb I-I is a barrel z' closed at its forward end with a perforated screw plug 2'1 and at its rear end opening into a vert-ical cylindrical bearing 2 which receives the journal 3 of an arm i* thereby mounted to overhang the frame of the gun barrel. Fitted in said barrel is a plunger 5 provided with a square ended tongue G adapted to engage a corresponding curved shoulder 7 formed on the ournal 3. From the plunger a stem as extends out through the perforation of the screw cap l having a coiled spring 7c around it, acting between the cap and plunger to press the tongue 6 into engagement with the shoulder 7 on the journal @73, and thereby hold the arm 4 rigidly in a position crosswise to the axis of the gun barrel.

The spring and plunger may readily be removed from or inserted in the barrel when the cap l is unscrewed therefrom. rl `he journal of the arm 2'* is held in its bearing 2 in the barrel z' by a set screw mi in the barrel, engaging a groove 'm11 turned in the 30 lower part of the journal. The arm t carries thegsightwustably nirfninted'thereon vertieallrprrll ltglm barrel': n adjustable stop m3 is secured to the side of the lever f for arresting the downward travel of the sight limb at point blank. The sight limb is graduated as shown, and an indicator mi* is adjustably secured to the forward end of the lever f to measure the elevation of the sight limb with reference to said graduation.

The construction of the base provided with the T shaped seat or groove e3 for receiving the head of the bolt for clamping the sight limb to the base, is important in that it permits the ready removal of the bolt and sight limb from the base by drawing the sight limb upward. It will be perceived that this could not be done if the bolt were fixed in the base, and that the sight limb is prevented from being removed in the direction of the clamping action of the nut by the indicator m4 impinging upon its face. The bolt is held absolutely rigid and prevented from being turned by the action of the nut thereon. It will be understood that this construction is applicable to other forms of sight base than are herein described, and that I do not limit the invention to a base comprising the stop pin lever of bolt-guns. The construction of the square ended tongue 6 of the plunger 5 and straight, substantially diametral shoulder 7 of the journal of the sight arm is highly advantageous in that it insures the arm being held absolutely stable in sighting posi- 35 l i l i la,

tion without possibility of play, and avoids the fault inherent in a construction where the end of the plunger is pointed and bears upon the journal in the plane of the axis thereof and that of the plunger, as in the mechanism of the patent hereinbefore cited. Another important result is gained by this construction, as follows: It is essential that the lever of the clamping nut 71,2 shall stand in a certain position when the sight limb is clamped in place, which is substantially that shown in the drawings, that is, projecting rearwardly somewhat below the horizontal plane. To effect this, the head of the bolt is first formed square, then it is placed in the s-eat in the base, into which it will enter sufficiently to remain, though it cannot bottom therein, as the bottom of the seat is semicircular, due to the circular shape of the milling tool which forms it. The sight limb and nut being also in place on the bolt, the bolt head may then be repeatedly placed in its seat, turning it a quarter turn each time, until the proper position of the lever nut is obtained. Then the lower edge of the bolt head in that position may be milled semi-circular to fit the bottom of the seat, and thereafter when the parts are assembled it will be impossible for the lever nut to stand in any other position than the one intended, or to become misadjusted. The slightly concave curved form of the shoulder 7 on the journal 273 insures a bearing of the plunger tongue G at the ends thereof, or points farthest removed from the center, whereby the journal is held stable in its proper position, and it may be squarely adjusted in said position by reducing either end of the concavity as may be required.

I claim as my invention:

l. In a sight for firearms a base having a vertical guide way for the sight limb and a bolt head groove parallel with the guide way, for the reception of the sight limb pilanping bolt head substantially as speci- 2. In a sight for firearms a base having a vertical guide way for the sight limb and a T groove parallel with and opening into the guide way for the reception of the sight limb bolthead, substantially as specified.

3. In a sight for fire arms, a base having a vertical guide way for the sight limb, and a. vertical T groove e3 milled in the body of the base from the upper side thereof parallel with and opening into the guide way, substantially as specified.

4L. In a sight for firearms a base having a vertical guide way for the sight limb and a vertical T groove e3 milled in the body of the base from the upper side thereof parallel with and opening into the guide way, in combination with a bolt having its head engaged in the T groove, and its shank proas-eeomersami asraumsmrs jecting through the plane of the guide way, and means for fastening the bolt head rigidly in the seat.

5. In a sight for firearms, the combination of a base having a vertical guide way, and a bolt head groove parallel with the guide way, a sight limb fitted to slide in the guide .way of the base, and clamping means secured in the bolt head groove for clamping the si ht limb to the base.

6. n a sight for firearms, the combination of a base having a. guide way and a bolt head groove parallel with the guideway, a sight limb fitting the guideway, a clamping bolt having its head received in t-he bolt head groove, and a clamping nut for clamping the sight limb to the base.

7. In a sight for firearms, the combination of a base having a vertical guide way and a T groove parallel with and opening into the guideway, a slotted sight limb fitting the guide way, a bolt projecting through the sight limb slot and having its head engaging the T groove, and a clamping nut received upon the bolt to clamp the sight limb to the base.

8. In sights for firearms the combination of a base having a vertical guide way and the T groove 63 milled in the body of the base, from the upper side thereof parallel with and oining the guideway, a sight limb fitted to slide in the guideway and having a vertical slot, a bolt projecting through the slot of the sight limb with its head in engagement with the T groove of the base, a nut received upon the bolt outside of the sight limb for clamping the same to the base, and a set screw for binding the bolt head in its seat.

9. In a sight for firearms the combination of a base having a vertical guide way and the T groove milled in the body of the base from the upper side thereof, joining the guideway, a sight limb guided in the guideway, a clamping head engaging the T groove, a clamping handle and screw attachment connected with the head for clamping the sight limb in place, and means for rigidly securing the clamping head in its groove or seat.

l0. In a sight for firearms, the combination of a base having a vertical guide way for the sight limb, and a vertical groove parallel with the guide way, the guide way and groove opening at the top, a sight limb in the guide way and a limb clamping bolt having its head slidable in said groove.

1l. In a sight for firearms of the bolt gun type, the combination of the bolt stopping lever, a sight limb slidably connected therewith forkvertical movement and axvertically adjn stable'stopl on said lever t'orlimitthe vertical movement of the sight limb.

12. In a sight for firearms of the bolt-gun type the combination of the stop lever having a vertical guide way and a bolt head groove parallel with the guide way, a sightlimb fitted to slide in the guide way of the base, and clamping means secured in the bolt head groove for clamping the sight limb to the base.

13. In a sight for firearms of the bolt-gun type the combination of the stop lever having a guide way and a bolt head groove parallel with the guideway, a sight limb fitting the guideway, a clamping bolt having its head received in the bolt head groove, and a clamping nut for clamping the sight limb to the base.

14. In sights for firearms of the bolt-gun type the combination of the stop lever having a vertical guideway and the T rdove e3 milled in the body of the basf'rom the upper side thereof parallel with and joining the guideway, a sight limb fitted to slide in the guideway and having a vertical slot, a bolt projecting through the slot 0f the sight limb with its head in engagement with the T groove of the base, a nut received upon the bolt outside of the sight limb for clamping the same to the base, and a set screw for binding the bolt head in its seat.

In testimony whereof I have affixed my signature in presence of two witnesses at Middlefield, Connecticut this 30th dayof September 1908.

JAMES VVINDRIDGE.

Vitnesses:

GEORGE L. BARNES, ALFRED H. AUGUR.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.