US642670A - Sight for ordnance. - Google Patents

Description

No. 642,670. Patented Feb. '6, I900.

w. H. BEJANS.. SIGHT FGR QRDNANCE.

5 Sheets-Sheet I NVE R WITNESSES ATTORNEY.

- Patented Feb. 6, I900. w H. BEVANS. SIGHT FOR ORDNANCE.

7 (Application filed may 12 1898.) I

5 Sheets-Sheet 2.

(No Model.)

MW T M Q 1 i WITNESSES N0. 642,670. Patented m. 5, I900. w H BEVANS SIGHT FGR DBDNANGE.

n filed May 12 1898) 5 Sheets-sheaf 3.

(No Model.)

' //v VENTOI? u f. @WW

New 642,670. I v Pat ented l ob; 6, 1900.,

. w. H. BEVANS. I

-SIGHT FOR ORDNANCE.

(Application filed May 12. 1898.) (No Model.) 5 shga ta sheet 4.

WITNESSES: INVENTOI? Np. 642,670. Patented Feb. 6, I900.

w. BEVANS. SIGHT FOR URDNANCE.

(Application filed May 12, 1898.)

(H Model) 5 Sheets-Sheet 5.

WITNESSES l/v VEN T0}? V V- M ATTORNEY.

States tides;

*Atr' BEVANS, OF WASHINGTON, "DISTRICT oh comm ism.

sleet Foe RDNANQEQ pert ofLetters emetic. 642,670, dated February 6, reoo. Appllcation filedtlay12,1893. Serial 1%. 680,444. (No model.) .1

' To whom, 2 2? may concern: mounted upon said supporting-plate through Be it known that I, W'ILLIAi/i H. BEVANS, the -medium of the trunnions 5, projecting citizen of the United States, residingat Washfrom a tru'uniomband' 6, secured about the 55 ington, District of Columbia, have invented body or main tube-of the telescopeend e11- certain new and useful Improvements in gaging said trunnion-bearings,-in which they Si di for Qrdnance; andl do hereby declare arerctained hycaps 7. A shaft8is threaded wihg to be full, clear, and exact into boss 3 end at its outer end is reduced -11 of the invention, such as will enand threaded, as at 9, and at the inner end 60 rs skilled in theart to which it apof said'threaded portion formed with an em to make and use the same. nular shoulder- 10." lis invention relates to sights for ord- Mounted upon shaft 8 is an elevating disk ance; the gorimary object thereof is to or drum 11, the hub of which is counterbored do an improved mechanism whereby the to receive shoulder 10 ofseid shaft. A suit- 65 t maybe quickly and accutatel'yadjusted' able clamping-nut 12 is provided upon the 15 to minimize the numberfof' perts emthreaded end of the shaft hhd is adapted to 'pioyed in such mechanisms, th'ussimplifying lock the drum or disk from movement upon effecting a reduction in weight said shaft after the sight has heenadjusted. cost of manufacture. Q Formed in said disk or drum, about the con-- 70, r ilieinvention-elseconsistsin eesteio. otheritertthereof,isas iralslota13,:intomhichprm. e improvements, which will be fully 'setforth jectis a pin 14, carried byen,elevatingband is the following specification, particularly 15, also secured upon the body of the telepointed out in the claimsgand clearly illusscope. This pin projects fromalaterallyex- 2*" deal by the accompanying drawings, ihrtending lug .16 upon said elevating-band, 75 kill?" which lug is formed.with a fist bearing-surnre 1 isa top plan view of myimproved face engaging the inner face of the drum or sight in pesitionupon the trunnion of a gun. disk, while a similar lug 17 is formed on the i efside elevation of the same- Fig. 3 opposite side of the elevating-band,-the bearis transverse sectional view taken onthe'line lug-surface of which engages a vertical guide-18o t?) of Fig. 4 ice similar view taken on extension 18, formed on the supporting-plate. liney of the sazhe figure. Fig. 5 is a top "Thus-as the telescope is elevated and. deplan view showing my sight providedwith pressed it is guided in its movement by the means for sheeting the-lateral adjustment engagement of said'lugs with'the inner face eof. Fig. 6 isa elevation of'theLJof the diskand guide extension. The elevat- 85 ig.-7 is transverse sectional view 'ing disk or drum. isprovided about the outer 3 5 o of 5. Fig. 8'is a si'milariview edge of the spiral slot with a scale, the gradthe line got the some figure. s Fig. uations'of which are brought-into coincidence) lan. view with the telescope and with an index or pointer upon the end of pin e 'ihg-frum remcyed. Fig-H10 is a side Mas said diskor drum is rotated. I 0 I f ion otthe same. 1 11,When it is desired to adjust the telescope o 1' ve i lustrated and described my'inv'ento ih'sure the'proper elevati'onof the gun for l M is "the fieseet insmsce lnioonnectioh" *a'meb'ject at tar-distance of,say,i-two thousand with that class of sights known as telescope-f yards, the elevating disk or drum is rotated, sights, outdo not desire to limit the sameto. its per' hery being milled to facilitate the .95 that class, as it is equally applicable to other same, ntil the two thousand yards gradw forms of sights. potion of the scalecoinoides with the index Referring now more particularly to Figs. upon the pin, when the sight will be elevated 1 2, 3, and e of the drawings, 1 designates a the requisite number of degrees. Thus it will supporting-plate having the laterally-extend i be seen that the elevation and depression of mo leg trun ieh-beerings Zformed at one'endthe telescope-are effected throughthe coaction thereof and at its opposite end the laterall'yofthe pin carried thereby and the'spiral slot extending hose 3. A. telesoope l, suchas is of the elevatingdisk. Owing to the fact that ordinarily in telescope-sights, is pivotally the pin carried by the sight is at all times above the axis of the elevating-disk the weight of the sight will cause the same to be retained in its adjusted position without the use of the clamping-nut, the latter not being essential, but provided as a safeguard to positively lock the sight from any movement which might possibly occur from the shock or vibration incident to the firing of the gun to which it is attached.

Through the medium of the spiral elevatingslot an increased scale-surface is provided, so that the graduations may be placed quite a distance apart, thus permitting the sight to be quickly and accurately adjusted by facilitating the reading of the scale and necessitating a considerable movement of the elevating-disk to elevate or depress the telescope a single degree.

For attaching the sight to the gun I place at any suitable and preferred position upon the latter (it being illustrated in the present instance as positioned upon the trunnion of the gun) a bracket 10,having an open-ended dovetailed groove formedtherein and secure to or form integral with the supporting-plate a dovetailed plate 20, which slides in the groove of the bracket, thus positioning the sight upon the gun. The supporting-plate is formed with a hollow boss 21, which opens through the dovetailed plate and in which a plunger is positioned, the same being held normally projected from said plate by a coiled spring' within the boss. The projecting end of this plunger enters an opening formed in the bracket as the sight is positioned upon the gun, and in removing the sight from the gun the plunger is retracted, it being provided with a suitable knob for that purpose. It will be noticed that the face of the dovetailed plate 20 is inclined,and the sameis so formed for the purpose of giving the sight the proper set in order to compensate for the drift or lateral deviation of the gun.-

In Figs. 5 to 10, inclusive, my improved sight is shown provided with a lateral ad justment in addition to the vertical adjustment before described, and through the medium of this construction the sight may be adjusted laterally and also be readjusted to proper position with respect to the gun should it become accidentally displaced from anyeause. 1

In the sight illustrated in said figures the supforting-plate is provided at its upper edge with a laterally-projecting shelf 23, upon which trunnion bearings 2 are swiveled throughthe medium of a pivot pin or stem 24, depending centrally from said bearings and having its bearings in the shelf, through which it depends-and receives a nut 25 on its projecting end. An arm 26 extends rear- Wardly from the trunnion-bearings, and upon this arm, adjacent to its free end, the boss 3 is formed, which carries the shaft of the ole vating-drum. The mounting of the telescope upon the trunniombearings and the mechanism for elevating and depressing it have been described hereinbcfore, the only difference in construction between the sight first described and the one now under consideration being the slight change incident to the swiveling of the telescope and its elevating and depressingmechanism to the supporting-plate. A pin 27 depends from the free end of the arm 26 and moves in a curved slot 28, formed in the shelf, and is provided upon its projecting end With a clam ping-nut 29, whereby the telescope may be locked in its adjusted position. A boss 30 is raised about said slot, upon which said arm moves, and a scale may be provided thereon with which an index upon the arm may coact, so that the telescope may be readily adjusted the desired number of degrees to the right or left.

It will be apparent that the lateral movement of the telescope could be effected in a number of different ways other than that here shown and described-as, for instance, through the medium of a rack and pinion and I therefore do not desire to limit my invention to the details of construction herein set forth for accomplishing such adjustment.

The guide extension, which guides the telescope in its elevation and depression, is'car ried by the inner end of the drum-shaft boss instead of being formed on the supportingplate, as in the first construction described.

The mounting of the sight upon the gun has been hereinbefore described,,the plunger 22 in the present instance being located below the rearwardly-extending arm, so that ready access is afforded to the knob for retracting the same. The dovetailed plate, however, is not inclined in the present construction but the proper set of the sight to- I compensate for the lateral deviation of the gun is provided for by forming the trunnionbearings at an angle to the stem or pivot-pin thereof, so that the sight is not only supported at the necessary angle to the gun, but the 5 axis thereof retains the same relative position with respect to the gun throughout the la"- eral movement of the sight, which would not :be the case were the supporting-plate and shelf set at an inclination, in which event the Y axis of the sight would rise or lower during lateral movement.

As stated at the beginning of the speeifi cation, the construction described and illustratedis not limited to use upon telescopesights, and it will" be apparent that a sight bar might be readily substituted for the tele-' scope without materially altering the detailsof constructiom Having thus fully described my invention,

j what i claim as new, and desire to secure by Letters Patent of the United States, i-s

1. In an adjustable sight for ordnance, the combination with an elevating, member formed with a earn-surface and having a scale following the contour of said surface; of an elevating member engaging said surface and I carrying an index enacting with saidscale,

snbstantiaiiy as described.

642,670 I I a 1 2. In an adjustable sight-for ordnance, the combination with an elevating member formed with a spiral elevating-surfaceand' having a scale following the contour of said surface, of an elevating member engaging said spiral surface and-carrying an indexcoa acting with saidscale, substantially as described. I

combination with an elevating member formedwith a cam-surface andhavingascale ,placed alongtheedgethereof, .ofameleyating.

member engaging said cam-surface and carrying an index coactingwith said scale, sub stautially as described. i l v i 4. In an adjustable sight for ordnance, the combination with anelevating-drum formed with a cam-elevating surface and having a scale following .the contour of said surface, of an elevating member engaging said cam-surface and carrying an index coacting with said scale, substantially as described.

5. In an adjustable sight for ordnance, the combination with an elevating-drum formed with a cam-elevating surface and having a scale following the contour of said surface, of an elevating'member carried by the sight engaging-said surface and provided with an index coa'cting with the scale, substantially. as

I I described.. 3. In an adjustable sightfor ordnance, that.

combination with an elevating member 7 formed with a cam-slot and having a scale ar-- rangedalong theredge thereof, of. an velevat- 6. .In'an adjustable sight for ordnance, the

ing member projecting into said slot and carrying an index coajcting with said scale, substantially as described.

In testimony whereof I afii-x my signature in presence of two witnesses.-

- ,WILLIAM H. BEVANS.

Witnesses:

W. W. KEBLINGER, H. C. SHERIDAN.

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