US789545A - Sight-setting device. - Google Patents

Description

PATENTED MAY 9, 1905.

G. E. HUMBERT. SIGHT' SETTING DEVICE.

APPLIOATION FILED APR.11,1904.

TUNTTED STATES Patented May 9, 1905.

EETCE.

PATENT fl? SIGHT-SETTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 789,545, dated May 9, 1905.

Application filed April 11, 1904. Serial No. 202,548.

To /tZZ wtmft it Hefty concern:

Be it known that I, GEORGE E. HUMBERT, a citizen of the United States, and a resident of the city oi' New York, borough of Brooklyn,

and accurately set the sight to exact range for f fine shooting.

The invention consists of novel features and parts and combinationsof the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this speciiication, in which similar characters of reference indicate corresponding' parts in all the views.

Figure l is a perspective view of the improvement as applied to a riiie-sight. Fig. 2 is a face view of the improvement. Fig. 3 is asectional side elevation of the same as applied, and Fig. 4 is a sectional plan View of the improvement on the line 4 t of Fig. 3.

The rifle-sight illustrated in Fig. ,1 consists of the usual base A, secured to the top of the barrel B of the riiie, and on the said base A is pivoted a sight-standard C, on which is held vertically adjustable the sight proper, D, adapted to be fastened in place on the standard C by a suitable set-screw E. The sightsetting device is mounted on a frame F, adapted to fit onto the front Jface of the sight-standard C, and on the upper end of the said frame F is secured a flange or abutment member Gr, adapted to rest on the top of the sight-standard C, as plainly indicated in Figs. l and 3.

On the frameFis mounted to slide up and down a stop H, adapted tobe engaged by the bottom of the sight D, as indicated in Figs. 3 and 4, and the said stop H is provided with a threaded block H, mounted to slide up and down in suitable guideways formed on the frame F. In the block H screws a screwrod I, journaled at its upper and lower ends in suitable"V bearings in the frame F, and on the upper end oi' the said screw-rod I is secured a pinion J, in mesh with a large bevel gear-wheel K, mounted to turn on a stud'K, supported by a cross-bar F', forming part of the frame F. (See Figs. 3 and Li.) On the back of the bevel gear-wheel K is arranged a graduation L, indicating on a graduated index N in the shape oi' a bar extending diametrically over the graduation, the ends of the bar being attached to arms F2 and F 3, projecting from or forming part of the frame F. N ow by the operator turning the gear-wheel K a rotary motion is given to the bevel-pinion J to turn the screw-rod l, and thereby cause the block H and its stop H to slide up or down according to the direction in which the bevel gear-wheel K is turned.

ln order to hold the bevel gear-wheel K against accidental turning, a retaining-lever O is provided in engagement with the peripheral face of the bevel gear-wheel K and fulcrumed on the frame F, as plainly shown in Fig. 2. A spring O' presses the lever O, and the latter is provided with a finger-piece O2, adapted Vto be engaged by the finger oi' the operator for swinging the lever O out of engagement with the gear-wheel K when it is desired to turn the gear-wheel for setting the stop H, as previously explained.

On one side of the frame F is arranged a graduation P, corresponding to a graduation Q on the sight-standard C, both graduationsv indicating the desired range in hundreds oi' yards. Now the graduation L on the back of the bevel gear-wheel K indicates corresponding hundreds of yards and subdivisions thereofgthat is, the graduation L is formed by concentric bands, each of which has a graduation of one hundred yards and subdivisions, preferably of two and one-half yards each. By reference to Fig. 2 it will be seen that the Yend of the graduation on one concentric band registers with the beginning ofthe graduation on the next following band, the end of the 9 graduation and the beginning of the following graduation being preferably indicated by large adjacent circles, while the subdivisions of a graduation on a band is indicated by dots, circles, or the like. As shown in Fig. 2,

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. i i -J' i i twenty-five, fiftyand seventy-five yards are indicated by large circles, and two and onehalf yards by dots; but I do not limit myself to this peculiar marking, as lines -or the like may be employed for the same purpose.

The markings on the graduation L are so arranged relative to the stop H that when the end of the graduation for seven hundred yards and the beginning ofthe graduation for eight hundred yards registers with the edge of the index N then the stop H stands at 8 on the graduation P, and when the gear-wheel K is now turned until the first twenty-five yards mark registers with the index N then the stop-H has been moved upward on the frame F one-quarter the distance between the marks 8 and 9 on the graduation P, thus indicating' that the setting device has been-set for eight hundred and twenty-five yards. In case it is desired to set the setting device to indicate, say, seven hundred and eighty-five yards, as illustrated in Figs. l, 2 and 3, then the operator turns the bevel gearwheel K until the marking 85 on the band for seven hundred yards registers with the bar N.

As shown in Fig. 2, the bar N is preferably provided with an index N, corresponding to the concentric bands of the graduation L to facilitate the setting of the gear-wheel, as before mentioned.

W hen it is desired to set the gun-sight D, say, to eight hundred and twenty-five yards range, then the gun-sight D is moved up a distance above the numeral 8 on the graduation Q, of the sight-standard C and is then fastened in place by the set-screw E. The operator now places the setting device in position on the standard C by engaging the abutment member G with the top of the sightstandard C, as illustrated in Figs. l and 3, and then the operator loosens the set-screw E and slides the sight D downward until the bottom thereof rests en the top of the stop H, set, as previously explained, to eight hundred and twenty-five yards. The set-screw E is then screwed up to fasten the sight in place, and then the sight-setting device is removed from the sight-standard C.

From the foregoing' it will be seen that the sight-setting device is first set by the operator to the desired range, whatever that may be, and then applied to the sight-standard C,

and finally the sight D is moved until thelatter abuts on the stop H, after which the sight is fastened in place by the set-screw E, and the sight is now set to the desired range.

It is understood that the stop H is controlled by a micrometer formed by the graduated gear-wheel K, the bar N, and the screwrod I, having the bevel-pinion J and screwing in the block H' of the said stop H.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent l. A sight-setting device for removable attachment to a sight for a firearm, comprising a micrometer, and a movable stop for engagement by the sight and controlled by the micrometer, the latter being constructed of a vertically-mounted screw-rod having a pinion at its upper end, a large bevel gear-wheel engaged by said pinion and having concentricall y-disposed graduations on the back thereof, and a rigid graduated index-bar extending' diametrically across such graduations.

2. A sight-setting device for removable attachment to a sight for a firearm, comprising a micrometer, a movable stop for engagement by the sight and controlled by the micrometer, and a fixed member for engagement with the sight-standard, said micrometer being' constructed of a screw carrying a pinion, a large bevel-gear eng'agedby said pinion, and having concentrically-disposed grad nations thereon, and a rigidly-sumiorted index device extending' across such graduations.

3. A sight-setting device for removable attachment to a sight, comprising a framehaving a fixed member for engagement with the sight-standard, a stop slidable on the frame opposite the fixed member and adapted to be engaged by the sight, a screw-rod mounted to turn in the frame and screwing in the said stop, to move the latter up and down, a pin-- ion on the screw-rod, a gear-wheel journaled on the frame and in mesh with the pinion, a graduation on the back of the gear-wheel, and an index-.bar fixed on the frame, for setting the graduated gear-wheel.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE E. HUMBERT.

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