US42091A - Improvement in adjustable front sights for ordnance - Google Patents

Improvement in adjustable front sights for ordnance Download PDF

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US42091A
US42091A US42091DA US42091A US 42091 A US42091 A US 42091A US 42091D A US42091D A US 42091DA US 42091 A US42091 A US 42091A
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ordnance
improvement
sight
adjustable front
front sights
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/06—Rearsights
    • F41G1/16—Adjusting mechanisms therefor; Mountings therefor
    • F41G1/28—Adjusting mechanisms therefor; Mountings therefor wedge; cam; eccentric

Definitions

  • the sight as improved by me is to be screwed or otherwise properly ,xed in one ofthe rimbases, or some other proper part of a cannon, it being provided for such purpose with a male screw, a, arrangedatthe base part of its sockettube A.
  • This socket-tube receives a slider, B, on which is markeda scale of divisions, as shown in Fig. l, the socket-tube being provided with a clampscrew, O, which screws laterally into it and against the slider, and serves to maintain the slider at any desirable elevation Within the tube.
  • This slider is not only surmounted by a thin standard, D, having on its upper extremity a small cylinder, E, but is provided With a cylindrical annulus, F, arranged concentrically with the cylinder E, and in other respects as shown in the drawings.
  • the interior surface of this annulus is blackened, or made black or otherwise more or less non-reflective of light, the purpose ofthe annulus being not only to shade the sight-cyl inder E from sun While the cylinder may be in use or in the act of being directed on an object, but to aid in bringing the axis of the cylinder to bear correctly upon the object.
  • the annulus is also advantageous in other respects.
  • the fore sights of guns or cannon are generally stationary on the piece; or,in other Words, have no means of adjustment, the back sight only being provided with such. In consequence of this, the regulating of the depression of the axis of the gun cannot be effected by the back sight.
  • my improved gun-sight We have only to raise the sliderin order to enable us to effect the adjustment of the gun for depression-firing. It will be seen,therefore, that my improved gun-sight is especially useful for the barbette and casemate guns of fortresses, as by means of it their depression can be adjusted. It is also useful for other guns, especially when they may be situated on high elevations, where it may be desirable to depress them in order to adjust them to correct firing upon an object.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Description

J. B. LEARoCK.'
Sighi'J for Ordnance'l A No. 42,091. Patented Mm1.129,'1864 Unrrnn Sommes PATENT Brien.
JOHN B. LEAROOK, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN ADJUSTABLE FRONT SIGHTS FOR ORNANCE.
Specification forming part of Letters Patent No. 42,09l. dated March 29, 1864.
To all whom t may concern:
Be it known that I, JOHN B. LEARocK, a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improved Adjustable Fore Sight for Cannon or Ordnance; and I do hereby declare the same to be fully described in the following specification and represented in the accompanying drawings, of Which- Figure l denotes a front elevation, while Figs. 2 and 3 are vertical sections of it.
The sight as improved by me is to be screwed or otherwise properly ,xed in one ofthe rimbases, or some other proper part of a cannon, it being provided for such purpose with a male screw, a, arrangedatthe base part of its sockettube A. This socket-tube receives a slider, B, on which is markeda scale of divisions, as shown in Fig. l, the socket-tube being provided with a clampscrew, O, which screws laterally into it and against the slider, and serves to maintain the slider at any desirable elevation Within the tube. This slider is not only surmounted by a thin standard, D, having on its upper extremity a small cylinder, E, but is provided With a cylindrical annulus, F, arranged concentrically with the cylinder E, and in other respects as shown in the drawings. The interior surface of this annulus is blackened, or made black or otherwise more or less non-reflective of light, the purpose ofthe annulus being not only to shade the sight-cyl inder E from sun While the cylinder may be in use or in the act of being directed on an object, but to aid in bringing the axis of the cylinder to bear correctly upon the object. The annulus is also advantageous in other respects.
The fore sights of guns or cannon are generally stationary on the piece; or,in other Words, have no means of adjustment, the back sight only being provided with such. In consequence of this, the regulating of the depression of the axis of the gun cannot be effected by the back sight. With my improved gun-sight We have only to raise the sliderin order to enable us to effect the adjustment of the gun for depression-firing. It will be seen,therefore, that my improved gun-sight is especially useful for the barbette and casemate guns of fortresses, as by means of it their depression can be adjusted. It is also useful for other guns, especially when they may be situated on high elevations, where it may be desirable to depress them in order to adjust them to correct firing upon an object.
I claim- The improved'ordnance fore sight, as made with the shade-annulus F, the sight-standard D, and cylinder E, and in other respects so as to be adjustable, substantially as specified.'
' JOHN B. LEAROGK.
Vitnesses:
R. H. EDDY, F. P; HALE, Jr.
US42091D Improvement in adjustable front sights for ordnance Expired - Lifetime US42091A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514654A (en) * 1946-06-14 1950-07-11 Lillard Urban Rifle sight conversion attachment
US2682707A (en) * 1952-07-22 1954-07-06 Dahlberg Jonas Folke Peep sight for guns and the like
US2817904A (en) * 1954-02-17 1957-12-31 Grover C Lee Gun sight
US20040042777A1 (en) * 2002-08-27 2004-03-04 Pentax Corporation Cam mechanism of a photographing lens
US20040042092A1 (en) * 2002-08-27 2004-03-04 Pentax Corporation Rotation transfer mechanism and a zoom camera incorporating the rotation transfer mechanism
US20040042091A1 (en) * 2002-08-27 2004-03-04 Pentax Corporation Lens barrel incorporating the cam mechanism
US20040141735A1 (en) * 2002-08-27 2004-07-22 Pentax Corporation Lens barrel incorporating the rotation transfer mechanism
US20040141737A1 (en) * 2002-08-27 2004-07-22 Pentax Corporation Optical element retracting mechanism for a photographing lens
US20040151490A1 (en) * 2002-08-27 2004-08-05 Pentax Corporation Optical element retracting mechanism for a retractable lens

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514654A (en) * 1946-06-14 1950-07-11 Lillard Urban Rifle sight conversion attachment
US2682707A (en) * 1952-07-22 1954-07-06 Dahlberg Jonas Folke Peep sight for guns and the like
US2817904A (en) * 1954-02-17 1957-12-31 Grover C Lee Gun sight
US20040042777A1 (en) * 2002-08-27 2004-03-04 Pentax Corporation Cam mechanism of a photographing lens
US20040042092A1 (en) * 2002-08-27 2004-03-04 Pentax Corporation Rotation transfer mechanism and a zoom camera incorporating the rotation transfer mechanism
US20040042091A1 (en) * 2002-08-27 2004-03-04 Pentax Corporation Lens barrel incorporating the cam mechanism
US20040141735A1 (en) * 2002-08-27 2004-07-22 Pentax Corporation Lens barrel incorporating the rotation transfer mechanism
US20040141737A1 (en) * 2002-08-27 2004-07-22 Pentax Corporation Optical element retracting mechanism for a photographing lens
US20040151490A1 (en) * 2002-08-27 2004-08-05 Pentax Corporation Optical element retracting mechanism for a retractable lens

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