Additional safety device for sear mechanism for firearms
AssigneeFabbrica D'Armi Pietro Beretta S.p.A.
InventorUgo Gussalli Beretta
Life of this patent
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Abstract
A sear mechanism for firearms comprises a sear box 12, and an additional safety device to prevent the hammer 16 from releasing accidentally and to fire under the action of inertial forces acting along the direction of the axis of the barrel in case of impact of the firearm, the additional safety device being an interposing element 60 which is slidably mounted below the firing pin latch 43 in a housing having a first inclined plane element 63 and a second inclined plane element 63a which are arranged between lateral walls 62 to form a seat 61 which holds element 60 in a first position where it does not interfere with the operation of the firing pin latch 43 but allows said element 60 to move into a position where it prevents the pin latch 43 from moving downwardly to disengage hammer 16.
Claims18
Sear mechanism for firearms comprising a sear box (12), a trigger (15) mounted in said sear box (12) on a rotation pin (18) which is acted upon by an elastic return element (25), and having a hammer (16) mounted in said sear box (12) on a pin of the hammer (31) and upon which acts an elastic thrust element (33), said hammer (16) being equipped with a mounting tooth (40) for engaging sear tooth (41), and a breechblock carrier (13) carrying a firing pin (14), and comprising a sear device (17) controlled by said trigger (15) which said hammer (16), motion between a cocking position A in engagement with said sear tooth (41) and a striking position B against said firing pin (14), wherein said sear tooth (41) is fixed and integral with said sear box (12), said hammer pin (31), is in engagement with a slot (32) of said sear box (12) said sear device (17) comprises at one end an engagement element (43) mounted on said hammer pin (31) said pin being adapted to cause said hammer pin to advance in said slot (32), said motion between said cocking position A and said striking position B of said hammer (16) comprising an initial translation step and a subsequent rotary step under the action of said elastic thrust element (33), said sear device (17) being connected at an opposite end thereof to said trigger (15), and including an additional safety device which comprises a interposing element (60) which is slidably mounted below the firing pin latch (43) in a housing having a first inclined plane element (63) and a second inclined plane element (63a) which are arranged between lateral walls (62) to form a seat (61) which holds interposing element (60) in a first position where it does not interfere with the operation of the firing pin latch (43) but allows said element (60) to move into a position where it prevents the pin latch (43) from moving downwardly to disengage hammer (16).
In a firearm having a sear mechanism comprising a sear box (12), a trigger (15) mounted in said sear box (12) on a rotation pin (18) which is acted upon by an elastic return element (25), and having a hammer (16) mounted iii said sear box (12) on a pin of the hammer (31) and upon which acts an elastic thrust element (33), said hammer (16) being equipped with a mounting tooth (40) for engaging sear tooth (41), and a breechblock carrier (13) carrying a firing pin (14), and comprising a sear device (17) controlled by said trigger (15) which said hammer (16), motion between a cocking position A in engagement with said sear tooth (41) and a striking position B against said firing pin (41), wherein said sear tooth (41) is fixed and integral with said sear box (12), said hammer pin (31), is in engagement with a slot (32) of said sear box (12) said sear device (17) comprises at one end an engagement element (43) mounted on said hammer pin (31) said pin being adapted to cause said hammer pin to advance in said slot (32), said motion between said cocking position A and said striking position B of said hammer (16) comprising an initial translation step and a subsequent rotary step under the action of said elastic thrust element (33), said sear device (17) being connected an opposite end thereof to said trigger (15) the which comprises an additional safety device comprising an interposing element (60) which is slidably mounted below the firing pin latch (43) in a housing having a first inclined plane element (63) and a second inclined plane element (63a) which are arranged between lateral walls (62) to form a seat (61) which holds element (60) in a first position where it does not interfere with the operation of the firing pin latch (43) but allows said element (60) to move into a position where it prevents the pin latch (43) from moving downwardly to disengage hammer (16).
Dependencies are inferred from the claim text.