US2922241A - Trigger mechanism with a breech bolt sensing element - Google Patents

Trigger mechanism with a breech bolt sensing element Download PDF

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Publication number
US2922241A
US2922241A US752729A US75272958A US2922241A US 2922241 A US2922241 A US 2922241A US 752729 A US752729 A US 752729A US 75272958 A US75272958 A US 75272958A US 2922241 A US2922241 A US 2922241A
Authority
US
United States
Prior art keywords
lever
sear
hammer
sensing element
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
US752729A
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English (en)
Inventor
Lawrence J Brunelle
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.)
Olin Corp
Original Assignee
Olin Corp
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 Olin Corp filed Critical Olin Corp
Priority to US752729A priority Critical patent/US2922241A/en
Priority to BE581326A priority patent/BE581326A/fr
Application granted granted Critical
Publication of US2922241A publication Critical patent/US2922241A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/56—Sear safeties, i.e. means for rendering ineffective an intermediate lever transmitting trigger movement to firing pin, hammer, bolt or sear
    • F41A17/58—Sear safeties, i.e. means for rendering ineffective an intermediate lever transmitting trigger movement to firing pin, hammer, bolt or sear automatically operated, i.e. operated by breech opening or closing movement

Definitions

  • a particular feature of the invention is the provision of a trigger mechanism of simple design and of a mini-- mum number of piece parts where the individual parts lend themselves readily to mass production methods.
  • a further feature of the invention is the provision of a trigger mechanism which is inoperative when the weapons breech is open or unlocked.
  • a still further feature of the invention is the provision of a trigger mechanism including a novel sensing or control lever in combination with a hammer, a sear and a trigger finger piece.
  • a still further feature of the invention is the provision of a novel trigger mechanism which is readily adaptable to all types ofweapons including full automatic, semiautomatic, slide actions and lever actions ranging from 22 caliber and centerfire weapons to shotguns.
  • a trigger device embracing certain features of the invention may include a main frame, a firingmeans movably mounted in the frame and normally disposed in a latched position, spring means for urging the firing means towards a firing position, a sensing element movably mounted in the frame and movable from a first position to a second position, a sear mounted upon the sensing element and movable relative thereto, said sear being operable to engage and latch the firing means in opposition to the urging of the spring means, and a trigger finger piece pivotally mounted in the frame, said finger piece being operable to engage and move the sear to unlatch the firing means only when the sensing element is in the first position.
  • Fig. l is an elevational view, partially in section, of a slide action weapon with which the principles of the present invention may be associated;
  • Fig. 2 is a view similar to Fig. 1 showing the trigger mechanism in a fired position
  • Fig. 3 is also similar to Fig. 1 showing the sensing element in the free or second position having been manually depressed and the trigger is shown disengaged from the sear;
  • Fig. 4 is a view of a portion of the sensing element as observed in the plane of line 4-4 of Fig. 2 and as viewed in the direction of the arrows.
  • a receiver 10 an action slide 11, a bolt slide 12, a bolt 13 and a firing pin 14.
  • a trigger frame 16 including a trigger guard 17 and a depressible safety button 18.
  • a sensing element or lever 21 Pivotally mounted to the frame 16 by means of a pin 19 is a sensing element or lever 21 terminating at one end in a lug 22 and at the other end in a manual operating arm 23.
  • the lever is formed with a web portion 24, as is most apparent in Fig. 4, which joins the main body of the lever with a plate 26 to define a generally U-shaped structure.
  • the trigger finger piece 39 pivotally mounted to the frame .16, by means of a pin 41, is movable from a normal or cocked position shown in solid lines in Fig. 3 to afired position represented by the dotted lines of Fig. 3.
  • a light wire coil spring 40 about the pin 29 terminates at 42 upon the sear and at 43 upon the finger piece thus operating to tend to rotate the finger piece in a counterclockwise direction towards its normal position while the sear is urged in a clockwise direction towards the stop 27 of the sensing lever as is apparent in Fig. 2.
  • the spring 40 constantly tends to rotate the lever 21 but is effective to do so only when the hammer 33 is released as is apparent in Fig. 2.
  • the spring 40 is of agiven potential which is less than the potential of a similar coil spring 46 carried by the hammer pin 34.
  • One end of the hammer spring terminates at 47 while the other end bears upon the frame 16 as at 48 with the result that the hammer is constantly urged in a clockwise direction.
  • the twisting moment developed by the hammer spring is effective while the hammer is in the latched position to impart a twisting moment to the lever in a counterclockwise direction about the pin 19 and in opposition to the moment set up by the weaker spring 40*.
  • the'sensing element or lever 21 need not be arranged in the manner illus-.. trated solong as the sensing element is movable to at least two positions, the-first position being one in'which the lever isoperative to permit firing becausethe lever sensesthat the weapons breech bolt'means is fullyclosed and/or locked while the-second positioniis one in which the lever is free and the weapon may not-be fired-becausethe lever. senses that the breech boltmeans ismot-in condition for firing; I
  • the element or lever 21 need not sense theabove-two conditionsof the breech boltdirectly but may close through-intermediate elements or piece-parts.-
  • a trigger for a--fifearm including a breech bolt means; said mechanism -comprising amain framefa firingmeans; movably mounted'i'n theframe and s, normally disposed in a latched position, asensing element cooperating with ;the 'breechbolt means for sensing the open or closedconditionthereof; said element being movably mounted-in the frame and movable from an operative position denoting a'closed bolt means to a free position'denot'ing an-open bolt means, a sear mounted upon the sensing element and movable relative-thereto, saidsear being' operable to engage and latch thefiring 2,922,241 3 V V s.
  • the lever is'provided witha manually engageable arm operable to 'move the lever from the operative position to the free-position without unlatching the firing means. and in opposition to the potential of the spring means.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrophonic Musical Instruments (AREA)
US752729A 1958-08-04 1958-08-04 Trigger mechanism with a breech bolt sensing element Expired - Lifetime US2922241A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US752729A US2922241A (en) 1958-08-04 1958-08-04 Trigger mechanism with a breech bolt sensing element
BE581326A BE581326A (fr) 1958-08-04 1959-08-03 Mécanisme de détente universel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US752729A US2922241A (en) 1958-08-04 1958-08-04 Trigger mechanism with a breech bolt sensing element

Publications (1)

Publication Number Publication Date
US2922241A true US2922241A (en) 1960-01-26

Family

ID=25027561

Family Applications (1)

Application Number Title Priority Date Filing Date
US752729A Expired - Lifetime US2922241A (en) 1958-08-04 1958-08-04 Trigger mechanism with a breech bolt sensing element

Country Status (2)

Country Link
US (1) US2922241A (fr)
BE (1) BE581326A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079718A (en) * 1959-05-19 1963-03-05 Harold D Allyn Firing mechanism with variable contact sear notch
US3142926A (en) * 1962-06-27 1964-08-04 Olin Mathieson Trigger with adjustable screw and stud therein
US3827171A (en) * 1973-02-05 1974-08-06 C Smith Lock for trap type shot guns
US4151670A (en) * 1976-05-12 1979-05-01 Rath Hans M Firing mechanism for semi-automatic firearms
US4152856A (en) * 1977-04-25 1979-05-08 Ithaca Gun Company Trigger mechanism
US6543169B2 (en) * 1998-08-25 2003-04-08 Timothy S. Bero Semi-automatic firing and disconnecting device for a non-hammer fired machine gun

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079718A (en) * 1959-05-19 1963-03-05 Harold D Allyn Firing mechanism with variable contact sear notch
US3142926A (en) * 1962-06-27 1964-08-04 Olin Mathieson Trigger with adjustable screw and stud therein
US3827171A (en) * 1973-02-05 1974-08-06 C Smith Lock for trap type shot guns
US4151670A (en) * 1976-05-12 1979-05-01 Rath Hans M Firing mechanism for semi-automatic firearms
US4152856A (en) * 1977-04-25 1979-05-08 Ithaca Gun Company Trigger mechanism
US6543169B2 (en) * 1998-08-25 2003-04-08 Timothy S. Bero Semi-automatic firing and disconnecting device for a non-hammer fired machine gun

Also Published As

Publication number Publication date
BE581326A (fr) 1960-02-03

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