US2855716A - Fire control mechanism - Google Patents
Fire control mechanism Download PDFInfo
- Publication number
- US2855716A US2855716A US499397A US49939755A US2855716A US 2855716 A US2855716 A US 2855716A US 499397 A US499397 A US 499397A US 49939755 A US49939755 A US 49939755A US 2855716 A US2855716 A US 2855716A
- Authority
- US
- United States
- Prior art keywords
- hammer
- sear
- trigger
- arm
- connector
- 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
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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
- F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
- F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
- F41A19/42—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer
- F41A19/43—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer in bolt-action guns
- F41A19/44—Sear arrangements therefor
- F41A19/45—Sear arrangements therefor for catching the hammer after each shot, i.e. in single-shot or semi-automatic firing mode
Definitions
- This invention relates to fire control mechanism adapted to be utilized with either manually operated or autoloading firearms.
- the fire control mechanism shown in Patent No. 2,675,638, issued April 20,,1954, to L. R. Crittendon has wide application to a variety of firearms manufactured by the Remington Arms Company, Inc., several of those firearms being shown in the patent.
- the fire control mechanism of the instant invention is designed to serve as a replacement for that of the cited patent in those instances where it is desired to improve the trigger pull characteristics with particular reference to a lighter pull, freedom from creep or blacklash, and faster lock time Such an improvement is the object of this invention.
- a more specific object of my invention is to provide a blocked sear type of fire control for a swinging hammer firing mechanism.
- Fig. 1 is a longitudinal vertical sectional view through a fire control mechanism embodying my invention. The mechanism is shown in cocked position.
- Fig. 2 is a similar view showing the same mechanism in fired position before relaxation of the grip on the trigger.
- Fig. 3 corresponds to Fig. l but relates to another embodiment of my invention.
- Fig. 4 is a view similar to Fig. 3, showing the same mechanism in fired position after the grip on the trigger has been relaxed.
- a trigger plate 1 which is essentially the same as that of the Crittendon patent and mounts a hammer 2 urged to swing upward and forward by a hammer spring 3 acting on a hammer spring plunger 4, communicating hammer spring force to the hammer.
- the plunger 4 is arranged to impinge upon an arm 5 on the disconnector 6 and raise the tail 7 thereof whenever the hammer falls.
- a similar action of the disconnector is provided when rearward displacement of the breech Patented Oct. 14, 1958 ice 2 bolt carrier, also as shown in the patent, overrides the forwardly extending arm 8 of the disconnector.
- a rotating hammer block 9 comprises a V-shaped element mounted in the trigger plate 1 for swinging movement about a fixed pivot near the apex of the V and is provided with a hammer engaging arm 10 which, in the position shown in Fig. 1, engages the hammer on the surface 11 and retains it in cocked position.
- a locking arm 12 extends rearwardly for engagement with an abutment on the sear 13 and a spring 14 acts between trigger plate and hammer block, applying a force in addition to the component of hammer spring force, urging the hammer block to free the hammer.
- the sear 13 is likewise mounted for rotation on a cross pin 15 in the trigger plate and is urged to swing anti-clockwise as viewed in the drawing to a position for engagement with the hammer block by means of a force applied below the pivot by a spring 16.
- the rear end of the spring engages the connector 17 which is swingably mounted on the upper end of the trigger 13.
- the connector is provided with a forwardly extending arm 19 which engages a step 20 on the sear above the pivot pin 15.
- the spring 16 acts in the same Way as the spring of the Crittendon patent, urging the sear into engagement, urging the connector into engagement therewith, and urging the trigger finger piece 21 to its normal forward position.
- the connector will rotate the sear clockwise, disengaging it from the hammer block and releasing the hammer to fall.
- the end of the arm 12 will ride up the forward surface of the sear above the abutment thereon and prevent return of the sear until after the hammer has been recocked.
- Another arm 22 on the connector extends forwardly along the back side of the trigger plate and overlies the rearwardly extending arm 7 on the disconnector.
- the arm 7 is lifted, carrying with it the arm 22 on the connector and disengaging the arm 19 from the sear step 20.
- the same disconnecting action will result from rearward displacement of the breech bolt overriding and depressing the disconnector arm 8.
- the arm 8 may also, as described in the Crittendon patent, be utilized as an action bar lock and provided with a manual release lever extending through a slot in the trigger plate.
- the disconnector frees the sear from the control of the trigger and will only permit the trigger to regain control when the breech block is fully locked and the trigger finger relaxed to permit the trigger to return to a normal forward position.
- the hammer block After firing, the hammer block will be turned clockwise to the limit permitted by engagement of the arm 10 with the trigger plate retaining pin 23, and the arm 12 will serve as a stop limiting anti-clockwise rotation of the sear 13 under urging of the spring 16. As the hammer is returned to cocked position, it will engage the arm 12 on the hammer block rotating the block anti-clockwise into position for retention by the scar, and return lease of the hammer block.
- the extent or tiiggei ihdve inent prior to release of the sear is depehdiit the starting position or the trigger which is conttolled by the engagement at the upper end the trigger with the tri ger plate retaining pincs.
- Tileposition may be controlled by selective assembly, 15y fitting of the trigger at assembly, or another adjustable trigger s'top' sc ew,
- cross bolt safety 16 is also provided, and the degree of trigger movefrierit after release of the sear may be controlled as noted above, depending upon the engagement with the seetioned may of the safety 2'6 or upon another step serew, not shown, to prevent trigger stop or overtr'avel.
- a similai combination of elements is provided and where parts are substantially similar they have been 'givensirnilar reference numerals.
- the hammer blocking member 27 is mounted behind hammer on the pivot 15 and engages with a surface 2 8 on the hammer 2.
- the sear 29 is mou ted on a pivot so and, when its front end is raised, releases the hammer block by disengaging from the corner 31 thereof. When the hammer block is so released, the hammer falls and the action of the spring 32 tends to return the hammer bloek to its former position.
- the seat 29 isioper'ated a trig ger 34 mounted on thepivot pin 15 and provided with a connector 35 engaged by a spring '36 and urged thereby to a position extending across between the trigger 34 and an adjlist'able contact point 37 on the sear;
- This connector is, like those of the patent and the"erribt'xli merit of my invention alreadydes'iibed, provided with a forwardly extending arm 38 whichlie's along" the back side of the trigger plate and overlies the rearwardly extending arm? on the discoiinector.
- a cross-pin safety 26 may be provided and, i'rithis instance, can serve to positively block movement not only of the tri ger 3'4 but 'of the sear 29 as well.
- trigger 151111 is that imposed by the possibility of accidental eagageiaefit 6f the trigger by brush, eta, or by a 'Iie'rvo iis hunter.
- a fire control mechanism comprising a pivotally mounted hammer having an angularly disposed extension thereon which is provided with a locking surface, a thrust-piece engaged with said hammer and a hammer spring, engaging said thrust-piece and urging said harnmer from a cocked to a fired position, the improvement comprising in combination a trigger, a scar pivotal'ly moveable from a locking position to a released posit-ion,
- hammer blocking means interposed between said sear and said hammer including a member pivotal from a first position wherein the member is retained in blocking engagement with said hammer locking surface by said sear in locking position, to a second position wherein said member frees said hammer and has a member portion retaining said sear in released position, and means for returning said member to first position comprising an element of said hammer blocking means disposed in the path of travel of said hammer for displacement by said hammer in movement to cocked position.
- a fire control mechanism for a firearm comprising a pivotally mounted hammer having anangularly disposed extension at its free end, a locking surface on said hammer extension, a thrust-piece engaged with said hammer and a hammer spring engaging said thrust-piece and urging said hammer from a cocked to a fired position; the improvement comprising in combination a pivotally mounted hammer blocking member having a hammer locking arm thereon, said locking arm being disposed in the path of movement of said hammer extension whereby movement of said hammer to cocked position will cause pivotal movement of said member to a blocking position, a hammer engaging arm on said member disposed to facially engage said hammer locking surface when said member is in blocking position, means for retaining said member in blocking position against the releasing force of the said spring-urged hammer comprising a sear pivotally moveable from a member locking position in engagement with said locking arm to a released position; a trigger; a connector pivotally mounted on said trigger for
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Percussive Tools And Related Accessories (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE546762D BE546762A (xx) | 1955-04-05 | ||
US499397A US2855716A (en) | 1955-04-05 | 1955-04-05 | Fire control mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US499397A US2855716A (en) | 1955-04-05 | 1955-04-05 | Fire control mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
US2855716A true US2855716A (en) | 1958-10-14 |
Family
ID=23985113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US499397A Expired - Lifetime US2855716A (en) | 1955-04-05 | 1955-04-05 | Fire control mechanism |
Country Status (2)
Country | Link |
---|---|
US (1) | US2855716A (xx) |
BE (1) | BE546762A (xx) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3090148A (en) * | 1956-04-05 | 1963-05-21 | Walter H B Smith | Bolt action firearm with charger |
US3314183A (en) * | 1964-12-02 | 1967-04-18 | Harrington & Richardson Inc | Firearm |
US3965604A (en) * | 1974-08-07 | 1976-06-29 | Efim Leontievich Khaidurov | Firing and trigger mechanism for self-loading match pistol |
US3972142A (en) * | 1974-11-29 | 1976-08-03 | Takeji Kawamura | Shot gun |
US4152856A (en) * | 1977-04-25 | 1979-05-08 | Ithaca Gun Company | Trigger mechanism |
EP0494439A1 (en) * | 1991-01-10 | 1992-07-15 | BENELLI ARMI S.p.A. | Firing mechanism for firearms |
US6131324A (en) * | 1998-11-30 | 2000-10-17 | Jewell; Arnold W. | Adjustable dual stage trigger assembly |
US20070266845A1 (en) * | 2006-05-17 | 2007-11-22 | Sa Ordinance, Llc | Closed bolt system with tigger assembly for converting afully automatic submachine gun into a semi-automatic carbine |
US20180135929A1 (en) * | 2016-09-28 | 2018-05-17 | WHG Properties, LLC | Trigger mechanism for a firearm |
USD868198S1 (en) | 2016-09-28 | 2019-11-26 | WHG Properties, LLC | Trigger mechanism |
US10871338B2 (en) | 2016-08-11 | 2020-12-22 | Springfield, Inc. | Half-cock trigger safety assembly |
US11199373B1 (en) | 2020-03-30 | 2021-12-14 | Next Level Designs, Llc | Fire control / trigger mechanism |
US11835313B2 (en) * | 2020-10-08 | 2023-12-05 | Michael Burke Irwin | Trigger for a firearm |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB879030A (en) * | 1958-08-04 | 1961-10-04 | Olin Mathieson | Improvements in trigger mechanisms for firearms |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191306672A (en) * | 1912-04-13 | Frommer Rudolf | Improvements in and relating to Automatic Fire Arms. | |
US1147906A (en) * | 1915-07-27 | Marlin Firearms Co | Firearm. | |
US2126076A (en) * | 1936-08-03 | 1938-08-09 | Russell A Fortier | Trigger mechanism |
US2249231A (en) * | 1937-04-19 | 1941-07-15 | John B Smith | Trigger mechanism |
US2457001A (en) * | 1945-10-04 | 1948-12-21 | Savage Arms Corp | Trigger action for automatic firearms |
US2584299A (en) * | 1948-07-15 | 1952-02-05 | Olin Ind Inc | Fire-control mechanism for firearms |
US2675638A (en) * | 1951-01-06 | 1954-04-20 | Remington Arms Co Inc | Fire control for firearms |
US2775837A (en) * | 1952-08-26 | 1957-01-01 | Birmingham Small Arms Co Ltd | Firing mechanism for a firearm |
-
0
- BE BE546762D patent/BE546762A/xx unknown
-
1955
- 1955-04-05 US US499397A patent/US2855716A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1147906A (en) * | 1915-07-27 | Marlin Firearms Co | Firearm. | |
GB191306672A (en) * | 1912-04-13 | Frommer Rudolf | Improvements in and relating to Automatic Fire Arms. | |
US2126076A (en) * | 1936-08-03 | 1938-08-09 | Russell A Fortier | Trigger mechanism |
US2249231A (en) * | 1937-04-19 | 1941-07-15 | John B Smith | Trigger mechanism |
US2457001A (en) * | 1945-10-04 | 1948-12-21 | Savage Arms Corp | Trigger action for automatic firearms |
US2584299A (en) * | 1948-07-15 | 1952-02-05 | Olin Ind Inc | Fire-control mechanism for firearms |
US2675638A (en) * | 1951-01-06 | 1954-04-20 | Remington Arms Co Inc | Fire control for firearms |
US2775837A (en) * | 1952-08-26 | 1957-01-01 | Birmingham Small Arms Co Ltd | Firing mechanism for a firearm |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3090148A (en) * | 1956-04-05 | 1963-05-21 | Walter H B Smith | Bolt action firearm with charger |
US3314183A (en) * | 1964-12-02 | 1967-04-18 | Harrington & Richardson Inc | Firearm |
US3965604A (en) * | 1974-08-07 | 1976-06-29 | Efim Leontievich Khaidurov | Firing and trigger mechanism for self-loading match pistol |
US3972142A (en) * | 1974-11-29 | 1976-08-03 | Takeji Kawamura | Shot gun |
US4152856A (en) * | 1977-04-25 | 1979-05-08 | Ithaca Gun Company | Trigger mechanism |
EP0494439A1 (en) * | 1991-01-10 | 1992-07-15 | BENELLI ARMI S.p.A. | Firing mechanism for firearms |
US5274939A (en) * | 1991-01-10 | 1994-01-04 | Benelli Armi S.P.A. | Firing mechanism for firearms |
US6131324A (en) * | 1998-11-30 | 2000-10-17 | Jewell; Arnold W. | Adjustable dual stage trigger assembly |
US20070266845A1 (en) * | 2006-05-17 | 2007-11-22 | Sa Ordinance, Llc | Closed bolt system with tigger assembly for converting afully automatic submachine gun into a semi-automatic carbine |
US7562614B2 (en) * | 2006-05-17 | 2009-07-21 | Sa Ordinance, Llc | Closed bolt system with trigger assembly for converting a fully automatic submachine gun into a semi-automatic carbine |
US10871338B2 (en) | 2016-08-11 | 2020-12-22 | Springfield, Inc. | Half-cock trigger safety assembly |
US20180135929A1 (en) * | 2016-09-28 | 2018-05-17 | WHG Properties, LLC | Trigger mechanism for a firearm |
US10337816B2 (en) * | 2016-09-28 | 2019-07-02 | WHG Properties, LLC | Trigger mechanism for a firearm |
USD868198S1 (en) | 2016-09-28 | 2019-11-26 | WHG Properties, LLC | Trigger mechanism |
USD868928S1 (en) | 2016-09-28 | 2019-12-03 | WHG Properties, LLC | Trigger mechanism |
USD872216S1 (en) | 2016-09-28 | 2020-01-07 | WHG Properties, LLC | Trigger Mechanism |
US11199373B1 (en) | 2020-03-30 | 2021-12-14 | Next Level Designs, Llc | Fire control / trigger mechanism |
US11326848B2 (en) | 2020-03-30 | 2022-05-10 | Next Level Designs, Llc | Fire control/trigger mechanism |
US11835313B2 (en) * | 2020-10-08 | 2023-12-05 | Michael Burke Irwin | Trigger for a firearm |
Also Published As
Publication number | Publication date |
---|---|
BE546762A (xx) |
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