# US 4,397,111 A · Pistol, in particular for olympic fifty meter competition shooting > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,397,111 A - Document ID: US4397111A - Status: Granted - Kind: A - Application number: 06/207,444 - Filed: 1980-11-17 - Granted: 1983-08-09 - Earliest claimed: 1980-11-17 - Inventors: Cesare Morini - Web page: https://patentgrep.com/patent/US4397111A ## CPC - F41A 21/488: {Mountings specially adapted for pistols or revolvers} - F41A 19/49: in block-action guns - F41A 21/485: {using screws or bolts} - F41C 3/00: Pistols, e.g. revolvers (specially adapted for underwater use F41C9/06; for slaughtering or stunning animals A22B; for shooting bolts into concrete constructions, metal walls or the like B25C) - F41G 1/00: Sighting devices ({structurally associated with laser telemeters F41G3/065;} for indirect laying of fire F41G3/16; bombsights F41G3/24) - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE - F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR - F41G: WEAPON SIGHTS; AIMING (optical aspects thereof G02B) ## Abstract The pistol is provided with two supports that carry the front sight and the rear sight notch, respectively, which can be rotated around the barrel of the pistol in such a way as to carry the line of aim into various positions. Furthermore, the invention pistol is provided with a frame that connects the barrel of the pistol to the grip thereof so as to allow vertical and horizontal movements of the barrel and the grip to be made, one with respect to the other. The firing mechanism of the pistol is connected to the grip thereof but is detached from the remaining elements of the said pistol. ## Claims ### Claim 1 Pistol, in particular for Olympic fifty meter competition shooting, comprising a first support and a second support, a front sight mounted on said first support, a rear sight notch mounted on said second support, said pistol comprising a barrel, means to mount said first and second supports with said first sight and said rear sight mounted thereon, respectively, on said pistol barrel in a manner permitting said first and second supports to rotate around the axis of said barrel and to permit said first and second supports to be secured to said barrel at any selected position obtained by rotation of said supports about said barrel, said pistol comprising a frame, said frame consisting essentially of a drilled plate and a shaped fork, said pistol comprising a breech-block, means to mount said breech-block within said shaped fork, said pistol comprising a grip, means to mount said frame to said grip at any one of a plurality of angularly spaced separate positions all lying in essentially the same vertical plane, means to connect said barrel to said drilled plate at any one of a plurality of angularly spaced separate positions arranged in essentially the same horizontal plane, said pistol comprising firing mechanism, said firing mechanism comprising a trigger and a firing pin, and means for transmitting the motion of said trigger to said firing pin, and means to connect said firing mechanism to said grip of said pistol separately from the remaining elements of said pistol. ### Claim 2 (depends on 1) Pistol according to claim 1, wherein said front sight comprises elongated rod means, the front end of said rod means being formed into said front sight, and means for connecting the other end of said rod means to said first support. ### Claim 3 (depends on 1) Pistol according to claim 1, wherein each of said first and second supports are formed with a through hole having a cross-sectional shape substantially the same as and slightly larger than the cross-sectional shape of said barrel, each of said first and second supports being formed with a through slot placed parallel to the axis of said hole therein, said slot interconnecting the inside of said hole with an external surface of each of said supports, and each of said first and second supports further comprising tightening means adapted to cause the faces defined by said through slots to approach one another to thereby adjustably fix each respective support in said adjusted position of said support with respect to said barrel. ### Claim 4 (depends on 1) Pistol according to claim 1, wherein said drilled plate of said frame is formed with a plurality of elongated through holes, and said holes being placed transversally with respect to said barrel of said pistol. ### Claim 5 (depends on 1) Pistol according to claim 1, a connecting plate, said shaped fork comprising prongs the rear portions of which are connected to said connecting plate, means to mount said connecting plate in contact with said grip of said pistol, said connecting plate comprising a through hole located in a substantially vertical position, and means to mount said connecting plate to said grip of said pistol at a adjusted position therein in said vertical plane. ### Claim 6 (depends on 1) Pistol according to claim 1, means to mount said firing pin in said pistol such that the firing motion of said pin is inclined with respect to the axis of said barrel, whereby said firing pin will strike a cartridge in said pistol at an angle substantially equal to the angle at which said firing pin is inclined with respect to the axis of said barrel. ### Claim 7 (depends on 1) Pistol according to claim 1, wherein said means for transmitting said motion of said trigger to said firing pin comprises a first lever of generally "L" shape having a first extremity, a fulcrum, and a second extremity, first elastic means biasing said first lever when the pistol is ready to be fired into contact with said trigger, said fulcrum of said first lever being located in a spaced predetermined position along said second extremity of said first lever, a second lever comprising a first extremity, a fulcrum, and a second extremity, second elastic means thrusting the first extremity of said second lever when the pistol is ready to be fired against said second extremity of said first lever, said fulcrum of said second lever being located in a spaced position along said second extremity of said second lever, a hammer, means to pivot said hammer at a fixed axis with respect to said firing mechanism, said hammer comprising a sear, a hook-shaped lever restraining said firing pin, third elastic means adapted to thrust said sear when the pistol is ready to be fired against said second extremity of said second lever, and said hammer being profiled such that it will strike against, at the time of firing, said hook-shaped lever to thereby release said hook-shaped lever from said firing pin to cause said firing pin to move in a firing direction. ### Claim 8 (depends on 7) Pistol according to claim 7, wherein said second elastic means comprises a flat spring. ### Claim 9 (depends on 7) Pistol according to claim 7, wherein said first elastic means and said third elastic means each comprise helical compression springs. ### Claim 10 (depends on 7) Pistol according to claim 7, wherein said hammer is formed with a slot, said means for transmitting the motion of said trigger to said firing pin comprising a third lever, means to mount said third lever for motion in a plane parallel to the plane in which said hammer moves, means to pivotally mount said third lever about a common axis with said hammer; said third lever comprising a first pin, a second pin, and a third pin; said third lever first pin comprising an axis parallel to said hammer and third pin common axis and which engages in said hammer slot, said third lever second pin comprising an axis located substantially parallel to said common axis and arranged so as to extend outwardly of said firing mechanism for manual manipulation thereof, and said third lever third pin being adapted to come into contact, when said pistol is cocked for firing, with said second lever.