US3371441A - Safety mechanism for hand firearms - Google Patents

Safety mechanism for hand firearms Download PDF

Info

Publication number
US3371441A
US3371441A US528636A US52863666A US3371441A US 3371441 A US3371441 A US 3371441A US 528636 A US528636 A US 528636A US 52863666 A US52863666 A US 52863666A US 3371441 A US3371441 A US 3371441A
Authority
US
United States
Prior art keywords
safety
firing
hammer
firing pin
trigger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US528636A
Other languages
English (en)
Inventor
Walther Fritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3371441A publication Critical patent/US3371441A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/46—Trigger safeties, i.e. means for preventing trigger movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/64—Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/74—Hammer safeties, i.e. means for preventing the hammer from hitting the cartridge or the firing pin

Definitions

  • This invention broadly relates to a safety mechanism to firearms which has a safety-off and a safety-on position.
  • the safety mechanism is comprised of a manually operated safety lever and rotatable member having at least first and second cam surfaces which confront the firearm firing pin and which lies between the forward end of the firing pin and the primer of a cartridge loaded into the firearm. Rotation of the safety lever to the safety-on position blocks the firing pin from striking the primer of the cartridge. Movement of the safety lever to the safety-off position provides sufiicient clearance for the forward end of the firing pin to strike the primer of the cartridge.
  • the instant invention relates to firearms and more particularly to a safety device for hand firearms which provides positive blocking of the firearm firing pin when appropriately set and which further automatically sets a safety latch blocking the firearm hammer from operation.
  • a safety lock of the type set forth in US. Patent No. 3,184,876, is comprised of a pivotally mounted drum which is provided with at least first and second differing contours or cam surfaces which, in the safety-off position, permits the firing pin to make engagement with the cartridge of a shell.
  • a pivotally mounted drum which is provided with at least first and second differing contours or cam surfaces which, in the safety-off position, permits the firing pin to make engagement with the cartridge of a shell.
  • one of the cam surfaces confronts the firing pin preventing it from striking the shell even in the case where the firing pin is accidentally activated or released.
  • the arrangement of the above mentioned patent further provides means for blocking the trigger when the safety device is in the safety-on position by a mechanical coupling between'the operating lever of the firing pin safety device and the latching means of the trigger safety device.
  • the firing pin safety device of the instant invention is comprised of a pivotally mounted drum member having first, second and third cam surfaces which cooperate with 3,371,441 Patented Mar. 5, 1968 the front shoulder of the firing pin to permit the firing pin to engage a cartridge when the safety device is in the safety-off position and which prevents the firing pin from engaging the cartridge when the safety device is pivoted to the safety-off position.
  • the cam surfaces In moving from the safety-off to the safety-on position the cam surfaces cause the firing pin to move generally in a rearward direction by a distance somewhat greater than the distance between the safety-on and safety-off positions.
  • the firing pin holds this location momentarily and then moves slightly forward again so as to have its front shoulder confronted by the third cam surface which hold the firing pin in the safety-on position.
  • Another object of the instant invention is to provide a novel safety device for use in hand firearms comprising a firing pin safety device and a firing hammer safety device automatically actuated by the firing pin safety device when said firing pin safety device is moved to either said safety-off or said safety-on position.
  • Another object of the instant invention is to provide a novel safety device for use in hand firearms comprising a firing pin safety device and a firing hammer safety device automatically actuated by the firing pin safety device when said firing pin safety devices is moved to either said safety-off or said safety-on position and wherein said firing hammer safety device maintains the firing hammer and the firearm trigger in the locked position until the firing hammer has been properly cocked for firing purposes.
  • FIGURE 1 shows a partial view of a hand firearm with internal portions of the firearm being exposed for the purpose of simplifying the understanding thereof.
  • FIG- URE 1 shows the firearm in the safety-off position.
  • FIGURE 2 is a view substantially similar to that shown in FIGURE 1 with the firearm being in the safety-on position.
  • FIGURES 3a-3c are cross-sectional views of the firing pin safety drum in the safety-off, intermediate and safetyon positions, respectively.
  • FIGURES 4a-4c are detailed views of the firing hammer safety catch of FIGURES 1 and 2, showing the safety catch in the safety-off, intermediate and safety-on posi tions, respectively.
  • FIGURE 1 shows a portion of a hand firearm 10 which may, for example, be an automatic pistol which is comprised of a breech block 11 containing an axially movable firing pin assembly 12 having a rear surface 12a which bears against the forward surface of a firing hammer 13.
  • the central portion 12b of firing pin assembly 12 is provided with an elongated opening for receiving a stationary mounted pin 34 which bears against one end of a spring 35, the other end of which bears against the rear edge of slot 12b.
  • Spring 35 normally urges firing pin assembly 12 generally in the projecting pin 12c extending toward the left and reciprocally movable through opening 36 which communicates between breech block 17 and the barrel 38 of the weapon receiving cartridge 37.
  • the firing hammer 13 is pivotally mounted about stationary pin 15 located in the upper rearward portion of the stock 14 of the firearm and is under the influence of the firearm operating spring 16 which is pivotally connected.
  • firing hammer 13 is provided with a knurled surface 13a which may be operated by the users thumb or other finger to rotate firing hammer 13 clockwise as shown by arrow 40, in order to fully cock the firearm. Rotation in direction 40 compresses spring 16.
  • a safety catch 23 is provided near the pivoting end of firing hammer 13 which cooperates with a pivotally mounted trigger lever 25 in a manner to be more fully described, to provide the locking of firing hammer 13.
  • Safety catch 25 is mounted to pivot about stationary pin 27.
  • Trigger lever 25 is normally biased in the clockwise direction under control of spring 26 whose left-hand end is seated in an opening 42 provided within the stock of the weapon and whose right-hand end bears against a surface of the trigger lever 25.
  • a projection 24 at the upper end of trigger lever 25 cooperates with the safety catch 23 in a manner to be more fully described.
  • the lower end 28 of trigger lever 25 bears against the trigger arm 29 which extends generally in the left-hand direction forming a manually operable trigger means capable of activating the weapon in any conventional manner.
  • the trigger means 29 may be mechanically linked to the safety device activating lever 21 as represented by the broken line 41 for the purpose of blocking the trigger mechanism 29 when the activating lever 21 is in the safety-on position.
  • This structure is set forth in detail in the above mentioned US. Patent 3,184,876 and will be omitted here for purposes of simplicity.
  • a safety drum 18 is pivotally mounted between the front shoulder 20 of firing pin assembly 12 and the rear of barrel 38.
  • the safety drum is rigidly coupled to and pivoted by activating lever 21 which is mounted exteriorly of the firearm to permit manual manipulation thereof.
  • the safety drum 18 is provided with cam surfaces 19, 31 and 43.
  • the safety drum 18 is in the safety-off position with its surfaces 31 and 43 confronting the engaging surfaces 20a and 20b formed on shoulder 20 of firing pin assembly 12.
  • the firing pin assembly 12 is permitted to move in the lefthand direction by an amount sufficient to cause the pin 120 to protrude into barrel 38 in order to activate a cartridge 37.
  • the safety drum 18 In moving the safety drum 18 from the safety-off position of FIGURE 3a to the safety-on position of FIGURE 3c, the safety drum 18 passes through the intermediate position, shown in FIGURE 3b, wherein the sharp projecting portion 30 formed between the vertex of surfaces 19 and 43 engages surface 20a moving firing pin assembly 12 a distance D to the right of the safety-on position,
  • firing pin assembly 12 in the righthand direction causes its bearing surface 12a to impart rotation to firing hammer 13.
  • the firing notch 24 at the upper tip of trigger lever 25 is located in the position shown in FIGURE 4a.
  • the safety drum 18 moves through the intermediate position to reach the safety-on position, the movement of firing pin assembly 12 to the extreme right-hand position beyond the safety-on position as shown in FIGURE 3b, imparts rotation to firing hammer 13 causing the firing notch 24 to clear the lip 23a of safety notch 23 so as to occupy the position shown in FIGURE 4b of the drawings.
  • safety drum 18 absolutely prevents the firing pin assembly 12 from detonating a cartridge in barrel 38. Simultaneously therewith the trigger assembly 29 is prevented from releasing the firing hammer 13 due to the latching of firing notch 24 within safety catch 23.
  • An additional feature which isprovided is the further locking of the trigger 29 due to the mechanical linkage between activating lever 21 and trigger 29 represented by dotted line 41, which linkage assembly is set forth in great detail in the above mentioned US. Patent No. 3,184,876.
  • the weapon may be discharged by gripping the knurled surface 13a of firing hammer 13 to rotate firing hammer 13 clockwise as shown by arrow 40 until the firing notch 24 is latched by the shoulder 32 provided at the lower end of firing hammer 13.
  • This rotational movement significantly compresses the firing spring 16 causing it to be in the charged condition.
  • By movement of the trigger mechanism 29 in the direction shown by arrow 45 this releases charged spring 16 causing the firing hammer 13 to be rapidly rotated counterclockwise about its pivot 15 causing the firing pin assembly 12 to be urged rapidly toward the left which, in turn, causes engagement of pin end 120 with the cartridge 37 so as to fire the weapon.
  • the instant invention provides a novel safety catch for looking a firearm firing hammer which is automatically under control of a firing pin safety drum to prevent activation of the weapon under control of the firing hammer even after the firing pin safety drum has been reset to the safety-01f position.
  • a firearm having a chamber and trigger and firing pin means for engaging the primer of a cartridge and a pivotally mounted spring loaded firing hammer activated by said trigger for urging said firing pin toward engagement with a cartridge;
  • a safety mechanism comprising a pivotally mounted safety drum positioned between said first pin and adjacent the primer of a cartridge;
  • said safety drum being movable between a safety ON and a safety OFF position
  • said firing hammer having a safety catch
  • a pivotally mounted trigger lever positioned between said trigger and said firing hammer having a projection biased toward said firing hammer
  • said safety drum driving said firing pin rearwardly into said firing hammer rotating said firing hammer safety catch into locking engagement with said trigger lever projection when said safety drum moves between the safety ON and the safety OFF positions to prevent either accidental or deliberate firing of said firearm.
  • said safety drum is provided with a projecting edge which engages the firing pin near the front end thereof when said safety drum is moved between the safety ON and safety OFF positions to urge said firing pin rearwardly a predetermined amount beyond the safety ON position to rotate said firing hammer an amount sufficient to lock said firing trigger lever projection into said firing hammer safety catch.
  • said firearm being in the safety OFF position when the forward end of said firing pin is confronted by said first cam surface;
  • said firearm being in the safety ON position when the forward end of said firing pin is confronted by said second cam surface.
US528636A 1965-02-25 1966-02-18 Safety mechanism for hand firearms Expired - Lifetime US3371441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0038632 1965-02-25

Publications (1)

Publication Number Publication Date
US3371441A true US3371441A (en) 1968-03-05

Family

ID=7601854

Family Applications (1)

Application Number Title Priority Date Filing Date
US528636A Expired - Lifetime US3371441A (en) 1965-02-25 1966-02-18 Safety mechanism for hand firearms

Country Status (3)

Country Link
US (1) US3371441A (de)
BE (1) BE677050A (de)
DE (1) DE1453940A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469337A (en) * 1967-02-28 1969-09-30 Nicolaos C Christakos Breech-loading gun
US3664052A (en) * 1970-04-02 1972-05-23 Bruce Mounier Impact actuated underwater gun
FR2407450A1 (fr) * 1977-10-28 1979-05-25 Beretta Armi Spa Pistolet automatique
AT389759B (de) * 1986-03-24 1990-01-25 Steyr Daimler Puch Ag Sicherungsvorrichtung fuer pistolen mit hahnschlagmechanismus
US5245776A (en) * 1990-06-12 1993-09-21 Richard A. Voit Firearm having improved safety and accuracy features

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US936369A (en) * 1907-04-25 1909-10-12 William D Condit Gun.
US1070582A (en) * 1913-04-23 1913-08-19 John M Browning Firearm.
GB453672A (en) * 1934-08-10 1936-09-16 Mauser Werke Ag Improvements in or relating to safety devices for fire arms
US2846925A (en) * 1955-09-26 1958-08-12 Smith And Wesson Inc Automatic firearm with breech block operated disconnector
US3184876A (en) * 1961-03-18 1965-05-25 Walther Fritz Firing pin safety mechanism for firearms

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US936369A (en) * 1907-04-25 1909-10-12 William D Condit Gun.
US1070582A (en) * 1913-04-23 1913-08-19 John M Browning Firearm.
GB453672A (en) * 1934-08-10 1936-09-16 Mauser Werke Ag Improvements in or relating to safety devices for fire arms
US2846925A (en) * 1955-09-26 1958-08-12 Smith And Wesson Inc Automatic firearm with breech block operated disconnector
US3184876A (en) * 1961-03-18 1965-05-25 Walther Fritz Firing pin safety mechanism for firearms

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469337A (en) * 1967-02-28 1969-09-30 Nicolaos C Christakos Breech-loading gun
US3664052A (en) * 1970-04-02 1972-05-23 Bruce Mounier Impact actuated underwater gun
FR2407450A1 (fr) * 1977-10-28 1979-05-25 Beretta Armi Spa Pistolet automatique
AT389759B (de) * 1986-03-24 1990-01-25 Steyr Daimler Puch Ag Sicherungsvorrichtung fuer pistolen mit hahnschlagmechanismus
US5245776A (en) * 1990-06-12 1993-09-21 Richard A. Voit Firearm having improved safety and accuracy features
US5437120A (en) * 1990-06-12 1995-08-01 Richard A. Voit Firearm having improved safety and accuracy features

Also Published As

Publication number Publication date
BE677050A (de) 1966-07-18
DE1453940A1 (de) 1971-05-27

Similar Documents

Publication Publication Date Title
US3979850A (en) Safety system for handguns
US3830002A (en) Firing pin safety device for firearms
US3465744A (en) Toy double-barreled shotgun
US4499684A (en) Trigger mechanism
US2848832A (en) Firing pin lock assembly
US3234679A (en) Thumb-operated safety for boltaction firearms
US4569145A (en) Inactivating selector arrangement for bolt action firearms
US3371441A (en) Safety mechanism for hand firearms
US2296998A (en) Firearm
US3258871A (en) Key operated safety for firearms
GB879089A (en) Trigger mechanism for automatic firearms
US3184876A (en) Firing pin safety mechanism for firearms
US3797154A (en) Sear-disconnector for lever-action firearms
US3144808A (en) Recoilless rifle firing mechanism
US4516466A (en) Mechanism providing positive safety with bolt locked
KR890000195B1 (ko) 자동 소형화기(hand firearm)
US3626805A (en) Modification assembly for changing semiautomatic firearms selectively into fully automatic firearms
US3782022A (en) Releasable lock for a bolt of a firearm
US3710493A (en) Block action for sporting guns dropping breech
US2748661A (en) Firing rate reducer for automatic firearms
US2959107A (en) Automatic pistol firing mechanism
US2742822A (en) Firing mechanism for automatic and semi-automatic firearms
US3130513A (en) Bolt action firearm with automatic safety mechanism engageable by bolt handle
US3636646A (en) Barrel locking means for a double-barreled sporting gun
US3172222A (en) Self-locking carrier