US2381916A - Sear control mechanism for automatic firearms - Google Patents

Sear control mechanism for automatic firearms Download PDF

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Publication number
US2381916A
US2381916A US340499A US34049940A US2381916A US 2381916 A US2381916 A US 2381916A US 340499 A US340499 A US 340499A US 34049940 A US34049940 A US 34049940A US 2381916 A US2381916 A US 2381916A
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US
United States
Prior art keywords
sear
release
lever
pawl
casing
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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US340499A
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English (en)
Inventor
Lippert Hanns
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Individual
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Individual
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Filing date
Publication date
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Publication of US2381916A publication Critical patent/US2381916A/en
Anticipated expiration legal-status Critical
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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
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • F41A19/31—Sear arrangements therefor
    • 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
    • F41A19/08—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms remote actuated; lanyard actuated

Definitions

  • My invention relates to a modification of or improvements in the trigger and sear control mechanisms for automatic firearms firing on advance movements of the breech block, and controlled either locally or remotely.
  • My invention relates particularly to the remote control of the trigger and sear mechanism by means of Bowden cables, in which by the arrangement of a device which becomes operative after the release of the remote control, a locking member is positively carried back into the locking position.
  • My invention consists in complementing the locking means, whereby it is possible to make the weapons for remote or direct control.
  • the improved device has four levers hingedly connected together and arranged in the manner of a foursided linkage system, of which one at the same time forms the locking member released on uncocking, another one is in operative connection with the service members, and a third cooperates" with the breech closure body.
  • the spring buffer can be fitted in the closure body, so that all the parts of the sear control can be carried unsprung directly in the sear control housing.
  • the mass locked closure system itself the, spring buifer in the closure body must not excessively load the moving masses, it is in the scope of a further improvement of the weapon to shift the spring buffer into the sear control arrangement.
  • Figure l is a sectional elevation of a portion of a machine gun including the sear mechanism
  • Figure 2 is a similar view with the sear device in the cooked position
  • Figures 3 and 4 are vertical sections showing a portion of the part of the sear device not located in the sectional plane of Figures 1 and 2;
  • Figure 5 is a plan view of the structure shown in Fig. 3, the cover being removed.
  • l indicates the breech closure housing of a machine gun, which merges into a control mechanism casing 2.
  • the covers 13 and 4 enclose the latter at the top and to the rear.
  • the breech closure body or block 5 projects into the control mechanism-casing 2 by an extension 5a carrying a sprung pawl 6.
  • the sear hook 9 is carried in a slidable buiier casing l.
  • the buffer springs 8 are arranged in a row around the circumference of the casing l, and are supported on the front of the control mechanism casing 2 and press the Since, however, for reasons due to I casing 1 backward. where it abuts against the cover 4.
  • the sear hook 9 is adapted to lock the pawl 8, by
  • a nose piece 9b on the upper side of the sear hook 9 permits the latter to be pressed downwards in the position of rest by means of a locking lever to, see Figure 1.
  • Two clutch forks or links H,- arranged symmetrically to the vertical central longitudinal plane of the weapon, and with stops Ila, are each hinged at one end to the locking lever l0 and at the other end to the guide links I2 which on their part are connected hingedly to the limb, located symmetrically to the vertical central longitudinal plane of the weapon, of a release lever l3 surrounding the locking lever It in loop form.
  • the locking lever Ill, the clutch iorksor links H, the guide links l2, and the release lever l3 form with each other a kind of four-sided closed linkage system as the axes of'their connecting bolts intersect the sectional plane of Figures 1 and 2 at the four corner points of a quadrilateral.
  • Two sprung control pawls 5b rotatably carried on the extensionv 5a of the breech closure body 5 bear against the two stops Ila.
  • a bolt it carried in the casing l is pressed by a spring 55 against an upper arm of the locking lever it, which is rotatably carried on a pivot lta, together with the release lever it.
  • the pivot lta is supported, at both sides in the casing l.
  • a driver l'l carried on the inner ends of the spindle I6?) is in operative connection with the release lever l3 and this by means of lateral nose pieces Ila which engages under a projection i311 of'the release lever I3.
  • the driver t? has a nose piece lib against which the nose piece lBa of release pawl l8 provided with an arm I811 is adapted to rest.
  • the release pawl i8 is rotatably mounted on a pin 2
  • a spring IS By means of a spring IS the nose piece l8a of the release pawl I8 is pressed against the cooperating nose piece I'lb.
  • a further pin 20a ( Figures 3, 4) fixed on the pawl carrier 20 is in constant engagement with an intermediate lever 22 in the notch 22aof which it is adapted to move.
  • the intermediate lever 22 is fitted together with a trigger lever 23 on a spindle 24 carried in th..
  • Both levers 22, 23 are held in .the normal position by a spring 22 which presses by means a spring bush 21, against a rib 22b of the intermediate lever 22.
  • a safety nose piece 25 on a spin.. dle 22 carried in the casing 2 is adapted to be rotated so that it looks a finger 220 of the intermediate lever 22 and so secures the sear mechanism.
  • oscillatably carried on shaft 32 in the front part of the casing 2, is adapted to release the pawl it through its arm lib from the front side, by means of a pin 22.
  • here transmits the movement of a release rod 33, released after the last shot by the magazine supply member, on to the release pawl ll.
  • 34 (Fig. 5) are the springs of two resetting pins 33 acting on' the release lever I-3 and which are dispowd in series with and symmetrically to 'the spring bolt ll arranged in the vertical longitudinal central plane of the weapon, in front of the quadrilateral structure II, II, l2, l3 in the casing I.
  • the device operates as follows:
  • the sear mechanism takes up the position according to Figures 1 and 3.
  • the marksman rotates the safety nose piece 25 and thereby releases the trigger lever 23. If now the marksman pulls lever 23, the spindle 24 rotates in the direction of the arrow (Fig. 3) and with it the intermediate lever 22.
  • the notch 22a on the latter transmits this rotation through the pin 20a on to the pawl carrier 20 which carries with it the pin 2
  • the nose piece l8a of the latter in consequence of the action of the spring l9, remains pressed against the nose piece "b and transmits the rotation of the pawl carrier 20 to the driver ll.
  • the closure body springs forward and fires a cartridge.
  • the firing can only be interrupted by releasing the lever 23 or by releasing the trigger mechanism after the last cartridge has left the magazine.
  • th' turning back of the lever 23 effects the backward rotation of the parts 22, 20, II and I1.
  • the release lever l3 now rotates back to its normal position and lowers the links H with their stop Ila until these come into the path of the control pawls 5b.
  • the breech body 5 On the next forward movement of the breech body 5 from the rear reversal.
  • control pawls 5b drag the catch forks H forward and thereby oscillate the locking lever II which presses the sear hook -9 downward. This then the pawl l. The blow produced thereby is taken up and dampened by the recoil springs 3. The jerkymovement of the body 1 with the sear mechanism carried therein does not in any way affect its efficiency.
  • the delivering device in the magazine presses the release rod 33 backward, as shown by Figure 4.
  • rotates with the shaft 32 and transmit the movement of the release rod 33 to the pin 29 which forces the arm llb of the release pawl l8 backward.
  • the latter is thereby rotated about the pin 2
  • the parts l3, l2, II and III initiate the locking of the breech closure body 5, which is completed in the above-described manner.
  • a sear mechanism pivotally supported in the housing and comprising an articulated, quadrilateral structure, one of whose elements constitutes a locking member for the sear hook adapted to engage and lock the latter in breech block arresting position, a second element of said quadrilateral structure being arranged to be engaged and driven by the breech block during its passage through its rear portion of travel to carry the locking member back into the locking position after a period of release of said member, a third element of said quadrilateral structure acting as a release lever for th locking member, the fourth element of said structure operating as a connecting link, a trigger member operable to cause tripping of the release lever with resulting disengagement of the said second element from the breech block, whereupon the locking member becomes movable to non-locking
  • the combination according to claim 1. including a driver arranged to actuate the release lever, means for transmitting movement from catches the breech closing body 6 by means of the trigger member to the driver, said third eleinon with the driver on a pivot pin coaxial with ment surrounding the locking member in strap fashion, the second element or the quadrilateral structure being connected with the locking member and being connected to the release lever by the fourth element, said second element having a stop thereon, and two control pawls on the breech block body, one of said pawls being engageable with the said stop to bring the locking member into sear hook locking position, and the in series at the rear of the quadrilateral struc-.
  • the center pin lying in the central longi-' tudinal plane of the firearm and acting on the locking member to urge the same into sear hook the axis of rotation of the release lever in the position of rest, a pawl on the carrier biasedto the coupling position and adapted to be coupled with the driver, and a release rod adapted to be controlled by the magazine charger and movable into the housing, said release rod being operable to cause uncoupling of said pawl.
  • the combination according to claim 1 including a driver arranged to operate the release lever, the release lever being pivoted intermediate its ends, a pawl carrier coupled with the trigger member and rotatably carried in common with the driver on a pivot pin coaxial with the axis of rotation of the release lever in the position of rest, a pawl on the carrier biased to the coureleasing position upon tripping of the release pling position and adapted to be coupled with the driver, a release rod adapted to be controlledby the magazine charger and movable into the housing, said release rod being axially movable in the tion.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Lock And Its Accessories (AREA)
  • Mechanical Control Devices (AREA)
US340499A 1939-06-17 1940-06-14 Sear control mechanism for automatic firearms Expired - Lifetime US2381916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH214552T 1939-06-17

Publications (1)

Publication Number Publication Date
US2381916A true US2381916A (en) 1945-08-14

Family

ID=32097384

Family Applications (1)

Application Number Title Priority Date Filing Date
US340499A Expired - Lifetime US2381916A (en) 1939-06-17 1940-06-14 Sear control mechanism for automatic firearms

Country Status (5)

Country Link
US (1) US2381916A (fr)
CH (2) CH184909A (fr)
DE (2) DE677178C (fr)
FR (2) FR808607A (fr)
GB (1) GB461230A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448024A (en) * 1945-03-15 1948-08-31 William T Golden Machine gun firing rate control mechanism
US2765709A (en) * 1950-05-27 1956-10-09 Mach Tool Works Oerlikon Admin Trigger mechanism for automatic firearms
DE1143419B (de) * 1958-06-23 1963-02-07 Brevets Aero Mecaniques Verschlussmechanismus fuer automatische Waffen
DE976273C (de) * 1953-11-13 1963-07-04 Fritz Walther Abzugseinrichtung fuer Schusswaffen
DE1203164B (de) * 1961-02-13 1965-10-14 Oerlikon Buehrle Holding A G Abzugsvorrichtung an einer selbsttaetigen Feuerwaffe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895381A (en) * 1953-02-24 1959-07-21 Musser C Walton Trigger release mechanism for a plurality of guns

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448024A (en) * 1945-03-15 1948-08-31 William T Golden Machine gun firing rate control mechanism
US2765709A (en) * 1950-05-27 1956-10-09 Mach Tool Works Oerlikon Admin Trigger mechanism for automatic firearms
DE976273C (de) * 1953-11-13 1963-07-04 Fritz Walther Abzugseinrichtung fuer Schusswaffen
DE1143419B (de) * 1958-06-23 1963-02-07 Brevets Aero Mecaniques Verschlussmechanismus fuer automatische Waffen
DE1203164B (de) * 1961-02-13 1965-10-14 Oerlikon Buehrle Holding A G Abzugsvorrichtung an einer selbsttaetigen Feuerwaffe

Also Published As

Publication number Publication date
CH184909A (de) 1936-06-30
DE677178C (de) 1939-06-22
GB461230A (en) 1937-02-12
FR50996E (fr) 1941-05-19
CH214552A (de) 1941-04-30
DE725723C (de) 1942-09-28
FR808607A (fr) 1937-02-11

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