US290225A - John f - Google Patents

Description

7 parts in each of the drawings.

of the concave recess, said recess being made Unirrnn STATES PATENT Orricn.

JOHN F. GAFFEY AND GEORGE WV. COOK, OF NE\V HAVEN, CONN.

RIFLE-SIGHT.

EPECIFICILTION forming part of Letters Patent No. 290,225,

dated December 18, 1883.

Application filed November 5, 1883. (No model.)

1'0 all whom it may concern.-

Be it known that we, JOHN F. GAFFEY and GEORGE \V. COOK. citizens of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Rifle-Sights, of which the following is a specification, reference being had therein to the accompanying drawings, in which- Figure l is a side elevation of our improved rifle-sight, in which a sectional view of the base is also given on line :0 m, Fig. 7. Fig. 2 is a face View of the improved rifle-sight complete. Fig. 3 is a perspective view of a portion of the sight-leaf, having the combination sight-block attached thereto. Fig. 9 represents the remaining portion of the sight-leaf in perspective, and was detached, as shown, to facilitate placing all the views upon one sheet. Figs. 4, 5, 6, 7, 8, 10, and 11 are views of detailed parts,.fully described hereinafter.

Letters of like name and kind refer to like The design of our invention is to increase the efficiency of the rifle-sight, and render more certain and accurate the operation of the mechanism in wind-gage sights; and to this end it consists of a rifle-sight in which the shaft upon which the sight-leaf operates is adapted to be adjusted laterally with the longitudinal axis of the rifle-barrel, and securely iiXed upon any point desired by suitable checknuts.

It consists, further, in a rifle-sight having a combination sight-block fixed upon the sightleaf, and adapted to be moved in a vertical plane thereupon.

It consists, further, in a rifle-sight provided with graduations upon the combination sightblock and sight-leaf, operating in conjunction to form both avernier and ordinary sight scale.

It consists, finally, of the construction and arrangement of the parts, substantially as and for the purpose hereinafter shown and described.

In the annexed drawings, A represents a combination sight-block provided with a rectangular opening, upon the lower side of which is an open-sight notch, a, and directly above this rectangular opening, in the center in the block A, is a small aperture, Z), to be used as a peep-sight. This combination sight-block A has the form shown in Fig. 4, which gives an end and side elevation of the sight-bloclgshowing the shoulder d and projection c, the projection 0 being provided with a screw-thread, upon which the nut eis adapted to operate. The shoulder at is made to fit the slot in the leaf B, having a depthless than the thickness of the said leaf, as shown by broken linesin Fig. 1, providing an open space between the block Aand nut 6 when the nut is screwed against theleaf B, as in Fig. 1, thereby clamping the sight-block A at any desired point on the leaf B. The leaf B is provided with a graduated scale upon one edge, the subdivisions of which, in connection with suitable graduations on the side of the sight-block A, arranged opposite the peep-sight b, operate as a Vernier-scale for the adjustment of the sightblock A when using the peep-sight b. A single line is placed opposite the notch a, which operates, in connection with the same subdivisions on leaf B, as an ordinary elevating scale.

Fig. 7 is a plan of the base-plate D, which is provided with two upright lugs, i and 2', each lug having a hole, h, which corresponds in diameter with the pin F. This base-plate D is properly recessed on the under side, to permit the fiat spring E being placed therein and have sufficient space to operate. The spring E is secured to the base-plate D by the screw 3 at one end, as in Fig. 1, while the other end, being free, is bent in an upward curve, and is adapted to fit into the groove 9.

Figs. 10 and 11 represent the two parts into which the pin F is divided. I11 Fig. 11 the size of the pin is reduced at r to correspond with the diameter of the hole at in the hub of the leaf B, and serves as a journal, upon which the leaf B operates when being elevated for use. At .9 still another reduction in the size of the pin F is made, and provided with a suitable thread, to enable it being screwed into the internally-threaded hole, a, Fig. 10,

.as shown. A screw-thread is placed upon each end of the pin F, upon which the checknuts 0 and C operate. 0 and 0 are graduations on the pin F, by which the lateral adjustment of the leaf B is measured. When the parts are in the position shown in Fig. 2, it is obvious that if it is desired to move the leaf B to the right, unscrewing the check-nut O and tightening up 0 will cause the pin F to be moved longitudinally to the right, carrying the leaf B with it to the right. By a reversal of the operation theleaf B will be moved to the left, and this adjustment is measured by the graduation-lines 0 and 0.

A great advantage gained by our improved sight is that whenever the leaf B is closed down upon the gun, which is invariably the case when the sight is not in use, and again elevated for use, no change of position of the leaf B and appurtenant sight-block A in relation to the line of sight upon which it was last adjusted is incurred, as the leaf B operates upon the smooth journal 9", and the pin F is held firmly in position by the cheek-nuts G and C.

\Ve have shown in the drawings a sight which is adapted to being attached to the wrist or grip of the stock in the rear of the rifle-barrehwhieh requires the leaf B, when elevated for use, to stand at an angle of more than ninety degrees with the base-plate D. The difference in the vertical position of the leaf B may be regulated by the position of the projection f on the lug '5, against which the leaf B is firmly held, when elevated for use, by the peculiar end of the spring E interlocking in the groove 9, as shown in Fig. 1.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is-

In a gun-sight, the combination of the movable sight-block A, having the open-sight notch a and peep-sight aperture b, with the slotted leaf B, provided with the elevating scale, as described, and the pin F, having the graduations 0 and 0 and adjusting cheek-nuts G and C, the pin F being adapted to a longitudinal movement through the lugs i and t on the base-plate D, together with the spring E, groove "0, and projeetionf, all substantially as and for the purpose set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

JOHN F. GAFFEY. GEORGE \V. COOK.

\Vitnesses LoUIs S. DAY, JOHN WV. TAYLOR.

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