US820998A

US820998A - Telescopic sight for firearms.

Info

Publication number: US820998A
Application number: US28209605A
Authority: US
Inventors: Ambose Swasey
Original assignee: Warner and Swasey Co
Current assignee: Warner and Swasey Co
Priority date: 1905-10-10
Filing date: 1905-10-10
Publication date: 1906-05-22
Anticipated expiration: 1923-05-22

Description

No. 820,998. PATENTE MAY 2z, 190s.

' A. swAsBY.

:'nLscoPm SIGHT PoR HRBABMS.

APPLICLTIOI FILED 00T. 1G, NM.

i SHlETl-BIIEET 2.

Wvm'd'ar: Jnyamffr.

PATBNTED MAY 22, 1906.

A. SWASEY.

TELBSGOPIC SIGHT POR FIRBARMS.

LI'PLIOATIOH FILED 00T. 10, 1905.

3 BHEETB'SHEET 3.

Wrwawwa.: [QA:

connected with the cross-wire. l

UNITED STATES S. Patent PATENT OFFICE.

AMaRosE sWAsEY, or CLEVELAND, oHio, AssiGNoR To THE WARNER a sWAsEY coMPANY, or

CLEVELAND, OHIO, A CORPORATION -OF OHIO.

. TE LESCOP|C SIGHT FOR FIREARMS.

rammed my 22, 190e.

.To all whom it may concern:

Be it known that I, AMBnosE SWASEY, a citizen of the United States, residing in Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in T elescopie Sights for Firearms, of which the following is a specification.

This invention relates to sight devices used to obtain an accurate aim in shooting, and is particularly adapted for firearms, such as rifles.

One of the objects of the invention is to produce a gun-sight of minimum size and weight and one which can be readily removed from the firearm and conveniently carried by the rifleman.

Another ob'ect of the invention is to provide improve means for adjusting the inclination of the gun-sight and also means for securin the gun-sight when so adjusted.

. A. urther object is to provide means for adjusting the sight device longitudinally along the firearm and means for adjusting the inclination in such positions.

In the accompanying drawings, illustrating a gun-sight embodying my invention, Figure 1 shows in side elevation the middle portion of a riile, with the gun-sight mounted thereon. Fig. 2 is a vertical section through the adjusting-screw of the movable sight, showing also its threaded socket. Fig. 3 shows in lan the indicating-sleeve of the screw. Fig. 4 is an end view of the latter. Fig. 5 is a rear elevation of the gun-sight with the eyepiece removed. Fig. 6 is a view on the line 6 of Fig. 5. Fig. 7 is a bottom plan view.' of the bar supportin the sight device, partly shown in section. ig. 8 is a vert-ical transverse section on the line 8 8 of Fig. 1. Fig. 9 is an enlarged horizontal section on the line 9 9 indicated in Fig. 5, partly shown in elevation. Fig. 10 shows in lan the locking-spring shown in Fig. 9. Pig. 11 shows the plate for the locking-spring. Fig. 12 shows the ad'usting means for the vertical cross-wire. llig. 13 shows the traveling nut Fig. 14 is a vertical section taken through the axes of the sight device. Fig. 15.is a transverse section through the sight device on the line 15 15 indicated in Fig. 14. Fig. 16 is an enlar ed transverse section on line 16 16 indicate in Fig. 14, and Fig. 17 shows the adjustment of the eyepiecelcns The lnvention consists, essentially, of two members, a sup orting member that is removabl secure to the firearm and a sight device t at is adj ustably mounted on the supporting member. The supporting member is arranged to be removably attached to the irej arm and secured thereto, preferably, in adjusted positions. In the present instance the supporting member comprises a bar 12, having a straight portion 13, rovided with a dovetailed slot 14. A suitable stri 15 is provided with a portion arranged to s idably enga cure side. The supporting-bar can be readily attached to the firearm bv sliding it on this strip and may be located in several longitudinal positions b suitable means. In Figs. 1 and 8 the bar 1s shown as provided with a spring-pin 17, having an arm 18, which is caused to enter suitable notches 19 in the strip 15 when the bar is moved to such positions.

To the rear portion of the bar is suitably pivoted the i ht device, (denoted generally by 20.) 'ne sight device is preferably pivotally mounted on its forward portion at an intermediate portion of the bar 12 by a pivot-pin 21 passin through extensions of the frame of the si y it device and projecting portions of the ar. means is provided between the rear portion of the sight device and the rear portion of the supportin -bar, whereby the sight device can be rocke on the pivot and also secured in adjusted positions. At the rear end of the bar 12 is provided a socket portion 22, having a vertical bore that is threaded to engage with a screw 23 mounted therein. The upper end of the screw has a reduced shank with the extremity sli htly rounded and also has a collar 24 on t lis shank a short distance from the end. 'lhe end of the screw-shank engages the bottom of tho sight device, and the movement of tho screw up or down will raise or lower the sight devi ce-that is, rockl itonkits pivotal support. To maintain the engagement of the screw with the sight device, a member is provided on the bottom thereof. This member (shown separately in Fig. 6) comprises a base portion 25, secure Suitable` adjusting l IOO to the bottom of the frame of the sight device in any suitable manner, such as ,bvscrews. ing downward and then rearward, that has The base has an arm 26 extendetched on one face of a glass plate 44, that is supported to be horizontally adjustable in order to provide for drif t or lateral deflection ol the sight.

The plato 44 is secured in a its rear .ortion forked at 27 to engage the frame 45, fast to or a part of a traveling nut 7o screw-co lar 24 and a sleeve portion 28 of the' 46. 'l he. plate 1 14 is supported to slide lioriscrew. The innerface of the arm 26is roundzout-ally in a guide member 47. A screw 48 ed where it engages the collar 24. By this means the advancement of the screw upo'n rotation will carry the sight device up or down, according to the direction of rotation. The rounded end of the screw-shank and also the rounded engaging portion of the arm 26 with the collar will permit of the swinginf` movement of the sight device on its pivota su ort on the bar 12.

he screw 23 carries a suitable indicating device for showin the amount of adjustment of the sight evice. An annular scale is arranged on the socket 22, and a sleeve 29 is suitably securedv to the screw to rotate therewith, which sleeve .has an annular scale extending to its tapered extremity and at that place registering with the annular scale on the socket. 23 has a reduced shank 30, made somew hat square or poly onal to engage a similar aperture in a hea 31, which head is secured to the screw-shank by means of a nut 32 eng-aging the threaded end portion of the screwshank 30. The sleeve 29 is secured to the head 31 by means of an internal flange 33 on the sleeve being engaged by a ring 34, that is clamped to the head 31 by means of screws 35 passing through the head and tapped into the ring`34.

Suitable means are provided for securing the si ht device in the positions to which adjuste by the screw 23. In the present instance the collar 28 of the screw' is provided with longitudinal ribs. The su porting-bar at the rear end is provided wit a bore 36, one part of which communicates with the bore for the screw 23. In this bore is mounted a bolt 37, having a head 38 lying in the portion of the bore communicating with the other bore, and a nut 39 on the bolt 37 serves to draw the head 38 into enagagement with the collar 28 of the screw, which will serve to prevent rotation of the screw 23.. A spring 40 serves to retract the head 38 of the screw when the nut is loosened, causing the head to disengagc the collar 28.

The sight device is shown as used with Porro prisms, which deflect the line of si ht four times and considerablj-r shorten the istance of the line of sight. 'rho Porro prisms are rigidly secured to a sin le member, that may be removed from the sight device when The lower end of the screwl engages the traveling nut 46 and is rotatably supported in a part 49 of the frame, but prevented from advancing therein by means of a collar 5() on the screw engaging the inner face of the part 49 and a suitable head 51, secured to the outer end of the screw. The head 51 has a collar 52 secured near .its periphery and extending inward near the frame member. Inside of this collar is located a retaining means comprising a curved springelate 53, secured to the head at one end and aving its other end bent downward and engaging a notched plate 54, fast on the frame member. By suitable force being a .plied to the head 51 the screw will be rotate and the nut advanced in either direction as desired; but the end of the spring-plate will engage the notched plate and serve to retain t e screw in the adjusted position. A coilspring 55 is provided between the nut and the frame to prevent any movement of the nut from backlash.

In Fig. 17 is shown a plan of the adjustment ofthe eyepiece-lens, the outer tube being in section. One of the lens-tubes 60 slides in another lens-tube 6l, and the latter has a diagonal slit 62, into which extends a lug 63 to cause a screw-threaded engagement of these tubes, whereby they are adjusted. An outer tube 64, secured to the inner tube 60, carries a spring-latch 65, whose end is ridged to engage a ribbed ring 66 and secure the tubes in adjusted position, as shown in Fig. 16.

What I claim is- 1. The combination of a supporting member arranged to be secured to a irearm, a' sight device ivotally mounted on the supporting mem er, a socket portion on the supporting member having a screw-threaded ore, a screw operating in said bore and engaging the sight device by one extremity, the screw having an annular slot adjacent said end, and an arm secured to the sight device and engaging the screw at said slotted portion.

2. The combination of a supporting member arranged to be secured to a firearm, a sight device pivotally mounted on the supporting member, a socket portion on the supporting member having a screw-threaded Y ore, a screw operating in said bore and enloo i tra desired. Between the prisms and the eyegaging the sight device by one extremity, the i piece are arranged cross-wires for properly screw having an annular slot adjacent said focusing on the desired object. The horiend, an arm secured to the sight dcviccand 5 zontal cross-wire is carried or etched on one engaging the screw at said siotted portion, a i face of a disk or reticule 42, mounted in the collar on said screw, the supporting member 65 lens-tube 43. The vertical cross-wire is having a bore extending transverse to said 13o bore and having au enlarged portion communicating therewithLa bolt located in said latter bore with its head in said enlarged portion, and a nut'on said bolt arranged to move it and cause its head to engage said collar on the screw and lock the latter against movement.

3. The combination with a rearm, of a bar removably attached thereto, pivoting members extending upward at an intermedi.- ate part of the bar, a siglit device having pivoting members at its lower forward portion engaging said pivoting members, wherebj,r tbe sight device is pivoted on the bar, the supporting member being provided with an 'upright screw-threaded bore in its rear por-.-

tion, a screw operatinr in said bore and provided with a collar adjacent its upper end, a bearing member secured to the bottom of the sight device at its rear end arranged to engage the end of said screw, the bearing member being provided with a forked arm engaging said screw below its collar, whereby the rota.- tion of the screw will swing the sight device on its su port, and a clamping-bolt arranged to lock t e screw against rotation.

4. In a sight device, the combination with the lenses, of a cross-wire member movable across the axis of the lenses, a frame supporting the cross-wire member, a guide in which said frame is slidable to move the cross-wire member, a nut secured to said member, a screw engaging said nut to adjust the crosswire member, and a spring-latch for locking the screw in adjusted positions.

5. In a sight device, the combination with the lenses, of a cross-wire member movable across the axis of the lenses, a frame supporting the cross-wire member, a guide in which said frame is slidable to move the cross-wire member, a mit secured to said member,.a

screw engaging said nut to adjust the crosswire member, and a coil-spring on the screw for preventing backlash between the screw and nut.

6. In a sight device, the combination with the lenses, of a cross-wire member movable across the axis of the lenses, a frame supporting the cross-wire member, a guide in which said frame is slidable to move the cross-wire member, a nut secured to said member, a screw engaging said nut to adjust the crosswirel member, a latch-plateA carried by the device, and a spring-latch secured to the head of the screw ard engaging the latch-plate to lock the screw in adjusted positions.

7. The combination, in a sight device, of a body member having a tubular portion and carrying a lens disposed in the axis of said portion, a tubular eyepiece telescoping said tubular port-ion and having a screw-threaded engagement therewith, a spring-latch carried by one of said tubular members, and an annular latciilate engaged by said latchto lock said inem ers in adjusted positions.

8. The combination of a supporting meniber organized to be secured to a firearm, a sight device pivotally mounted on the supporting member, the supporting member having a cylindrical portion provided with a screw-threaded bore, a screw operating in said bore and connected with the supported member for adjusting the same on its pivotal support, and a cam member, having a tangential enga ement with the shank of the screw for lociiring the same in adjusted positions.

AMBROSE SWASEY.

Vitnessesa W. M. ALLEN, F. H. RICE.