US1709013A - Sighting system for antiaircraft guns - Google Patents

Description

April 16, 1929. s. e. GREEN: v 1,769,013

SIGHTING SYSTEM FOR ANTIAIRCRAFT GUNS Filed D60. 1926 2 Sheets-Sheet 1 gww/ntoc Samuel E Green Apr-i116, 1929.

2 Sheets-Sheet I Filed Dec. '7, 192

soa

5. f v u 5 an m 5 I /6 wr VSL 6 .w a 3 2 e u 4 5 2 0 I m Q zjvwmtoc Samuel E- Green Patented Apia 2.

' STATES SAMUEL G. GREEN, OF GRAY, GEORGIA.

. srerrrmo sYs'rEM FOR mmacRAr-r ermsn Application filedDecember 7, 1926i Serial No. 153,188. 7 (GRANTED urns-arm: ACT or mmcn s, 1883, AS .mrmmn Aran. so, 19 2 are 0. s: 75%.)

The invention described herein may be manufacturedand used by or for the Government for governmental purposes without the payment to me of any royalty thereon.

' The subject of this invention is a sighting system for. anti-aircraft guns and relates more particularly to that type of sighting system in-which an independent sight 1s provided for the elevation and azimuth operator and vertical and lateral deflection corrections are-applied 'to the sights by other members of the gun crew. In the employment of guns or groups of guns of the rapid firing automatic type, it is considered advisable to employ open sights as distinguished from the closed or telescopic sights and the principal objects of the present invention are to simplify the constructionof the sights, facilitate their oper- 2 ationand enable them to be placed on the same side of the mount in such a manner that the sight operators may track the target with accurac and rapidity. Withthe oregoing and other objects in view, my invention resides in the novel arrangement and combination of parts and m the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention. 1 A practical embodiment of the invention is illustrated in the accompanying drawmgs,

wherein:

Fig. 1 is a view in side elevation of a multiple gun mount equipped with my lmproved sighting system;

Fig. 2 is a view in rear elevation thereof;

Fig. 3 is a detailed longitudinal sectlonal view through the elevation front sight;

Fig. 4 is a. detail view of the vertical deflection scale;

Fig. 5 is a plan view of the actuatlng '45 mechanism of the azimuth sighting system;

Fig. 6 is a sectional view on the line 6-6 of Fig. 5- v Fig. 7 1s a detail view 1n elevation of one of the rear si hts;

Fig. 8 is a i ragmentary detail view of the firing mechanism.

Referring to the drawings by numerals of reference: 7

There is shown a gun'mount comprising a pedestal base 6 on which is rotatably mounted a top carriage 7 in which a cradle8 is trunmoned. As herein shown the cradle is of sufficient width to support a group of four machme'guns 9 but the number of guns does not affect the operation of the sighting system.

Actuating mechanism 10 fortraversing the top carriage and mechanism 11 for elevatmg the cradle are both positioned to the left of the mount to allow room for the gunner who controls the firing mechanism indicated at 12 at the right ofthe cradle. The slghting system for pointing the gun 1n azimuth is arranged convenient to the travers ng mechanism 10 .and accordingly it 1s posltloned some distance below the cradle and at the extremity of a laterally extendmg bracket 13 fixed to the. top carriage. This sighting system is carried on a lateral swinging bar 14 pivoted at' 15 to a vertically swinging carrier 16 which is pivoted at 17 to the bracket 13. Fixed to the bar 14 are c r the front sight including the vertical wire 18 and rear sight 19, the latter being placed, coaxial with the pivot 15 of the bar so that as the bar is swung laterally the gun pointer will not be compelled to shift his position and as a consequence he may track the target with great accuracy and rapidity.

A- houslng 20 situated between the carrier 16 and the bar 14 mounts a worm 21 which meshes with a worm wheel segment 22 fixed on the pivot 15. By means of this gearing the bar and sighting system carried, i

thereby is displaced from parallelism with the axis of bore angularamounts corresponding to lateral deflection corrections and this displacement may beread in mils on a-scale 23 over which moves a pointer 24 fixed to the bar. "95

The sight bar and carrier are maintained parallel to the cradle during its movement' in elevation by means of a link 25 connecting the forward portions of the carrier 14 v to the cradle.

The sighting system for pointing the gun in elevation is carried by the. cradle and consists of a rear si ht 26 mounted over the era 7 die trunnion an a front sight 27 including 4 a horizontally disposed wire 27. This .105 front sight is moved in a vertical plane with so"v ' 10 vertical movement.

' 2 directly over the pivot of said respect to the cradle bein mounted on a lead screw 28 and is restraine against rotational movement by means of a guide .post 29. The vertical displacement of the wire 27' on I applying the deflection correction may be 1 read against the scale 80 by means of a pointer 31 which is mounted on the lead screw and has its index portion engaged in the recess 32 of the scale to constrain it to I so arate sightin systems for azimuth and e Vation', .the ormer comprising a laterally I swinging bar, pivoted on the carrier, a front sight consistin of a vertically disposed wire at one end of t e bar, a rear si ht positioned in, the elevation sighting stem comprising a rear sight "positioned on t e cradle trunnion and a front I sight on the cradle movable vertically with respect to the man a including a hon-i zontally di wire..

2. In com ination with arallel comma supportin members, an e evation and azimuth si ting system respectively carried thereby and each including a front si ht and a rear sight, the azimuth system isplaceable, about the axis of its rear sight horizontally with respect to its supportm member, the elevation system displaoeab e vertically with respect to item rting member and means for displ Y e front sights to apply deflection corrections 3; The combination with a gun mount and a cradle trunnioned thereon, of a sight carrier pivoted at one end on the mount, a link connecting the other end of the earner to the cradle for maintaining the carrier and cradle in relationship at all angles of elevation, a sight bar pivotally mounted on the carrier for lateral displacement, means for displacing the'bar to apply deflection corrections, a rear sightposltioned on the bar oo-axial with its axis of lateral displacement and a front sight tically disposed wire carried at the of the bar.

a verend SAMUEL column.

I I 1 l

Images