US3791062A - Top lever mechanism for firearms - Google Patents

Top lever mechanism for firearms Download PDF

Info

Publication number
US3791062A
US3791062A US00321793A US3791062DA US3791062A US 3791062 A US3791062 A US 3791062A US 00321793 A US00321793 A US 00321793A US 3791062D A US3791062D A US 3791062DA US 3791062 A US3791062 A US 3791062A
Authority
US
United States
Prior art keywords
receiver
opening
rod
top lever
retaining
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
US00321793A
Other languages
English (en)
Inventor
J Martial
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.)
Herstal SA
Original Assignee
Herstal SA
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 Herstal SA filed Critical Herstal SA
Application granted granted Critical
Publication of US3791062A publication Critical patent/US3791062A/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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/58—Breakdown breech mechanisms, e.g. for shotguns

Definitions

  • Britt 5 7 ABSTRACT A device for overcoming axial play of the top lever of a firearm such as that found on multi-barreled shotguns.
  • the device includes a receiver having journalled therein a rod or post attached to and extending downward from an operating arm of the top lever.
  • the rod is adapted with a slanted blind opening having an axis which is inclined upwardly towards the operating arm.
  • a spring biased pin is carried within the opening and extends outwardly therefrom a distance sufficient to engage a groove penetrating the wall of the receiver.
  • the spring biased pin is automatically and continuously urged outwardly into and against the receiver insuring a continuous precision tit and thereby avoiding axial play of the rod journalled therein.
  • This invention in its broadest aspects, covers a device for automatically taking up slack or play in a top lever which comprises a receiver having a hole vertically bored therein and a rod joumalled for rotation within the bored hole.
  • the rod is characterized by having an upwardly slanted blind opening for receiving and engaging an outwardly biased retaining means whereby the biased retaining means is being continuously urged outwardly so that it will enter and engage another opening in the receiver.
  • FIG. 1 is a partial cut-away side view of a portion of a pivotally joined firearm showing the location of the inventive concept in phantom.
  • FIG. 2 is a top sectional along line 22 of FIG. 1.
  • FIG. 3 is a sectional view taken along line 33 of FIG. 1.
  • FIG. 4 is a part sectional view along line 44 of FIG. 2.
  • FIG. 5 is an exploded view of the inventive concept which includes the top lever, receiver (in cross-section) and retaining pin.
  • a portion of a pivoted type shot gun is shown having superimposed barrels l0 and 12; a forearm bracket 14 and the receiver shown generally by 16.
  • the firing mechanism which is shown generally by numeral 18, is contained within the receiver as is the mechanism for locking the receiver and barrel sections prior to firing. Although these mechanisms are not shown in detail, they are of the type conventionally used in commercially available pivoted type shot guns.
  • Located in about the center of the receiver is a breech enclosing area 22.
  • a hole adapted for accepting and holding a stem or rod 24 for rotation is vertically bored in the breech enclosing area.
  • the upper end of the vertical rod terminates in a head section 26 to which is attached an operating arm 28.
  • a retaining pin 30 penetrates the rod and the breech enclosing area, positions and operatively holds the rod within the breech enclosing areas.
  • the above components are the main components which in this invention are identified generally as the top lever mechanism 32.
  • rod 24 is designed for partial rotary movement within the breech enclosing area to permit locking and unlocking of the pivoted sections, a certain amount of unwanted axial play will develop between the rod 24 and the breech enclosing area 22 after extensive use.
  • the rod 24 is further provided with a blind opening 34 bored at an angle of between 45 and 90 to the axis of the rod and preferably at an angle approximating Normally the opening will be positioned approximately midway between the two ends of the rod.
  • a retaining pin 30 is slidably fitted within the opening in the rod and continuously urged outwardly from the opening by action of a biasing means such as spring 36.
  • the retaining pin 30 possesses a blind hole 38 or an indentation for holding the spring 36 in a biasing position.
  • the closed end of the locking pin 30 projects outwardly beyond the vertical wall limits of rod 24 and engages a grooved or slotted opening 40 in the side wall of the breech enclosing area 22.
  • the upper extended portion of the retaining pin which is in communication with the grooved opening 40 is planed or leveled to provide a substantially flat surface or face 42.
  • the fiat face 42 is in contact with the upper side of the grooved opening 40 which has a correspondingly flat walled surface to insure maximum surface contact between the two surfaces.
  • the biasing means 36 is continuously exerting a maximum force against the locking pin (thus preventing axial movement of rod 24 joumalled within the breech enclosing area) the planed face on the retaining pin possesses an angle no greater than an angle complimentary to the angle of the opening bored in rod 24.
  • the face of the locking pin 30 possesses an angle of or less with its axis.
  • a groove or slot 44 is provided in the breech enclosing area 22 to receive a second biasing means such as a pigtailed compression spring 46.
  • the small end of the spring 46 is attached to the retaining pin at a point just below the retaining pins flat face 42.
  • the stop means herein disclosed comprises an extended groove or channel 48 located in rod 24 just below the blind hole 34.
  • a corresponding retractable stud 50 having a diameter slightly smaller than the height of the extended groove extends out from an opening 52 in the breech block and engages groove 48.
  • the top lever is thereby limited in its rotation by the length of extended groove 48. Normally the groove is of such length that only that amount of movement which would be required for unlocking and locking the firearm achieved.
  • the slotted opening in the breech block is enlarged to provide an expanded opening 54.
  • rod 24 can then be rotated beyond the limits or ends of extended groove 48. This permits retaining pin 30 to be rotated and brought to register with the expanded opening 54 from whence it can be removed. The top lever can then be lifted and removed from the breech enclosing area.
  • a device for automatically taking up axial slack in a top lever comprising a receiver having a hole vertically bored therein and a rod journalled for rotation within said bored hole, said rod having an upwardly slanted blind opening for receiving and engaging an outwardly biased retaining means which is being continuously urged outwardly so that the retaining means also enters and engages an opening in said receiver.
  • the biased retaining means comprises a retaining pin for contacting the walled surface of said opening in said receiver and a spring for urging said retaining pin into said opening in said receiver and against said walled surface.
  • the device of claim 4 further including a stop means for limiting rotation of said rod within said bored hole.
  • the device of claim 1 further including a second biasing means for continuously urging said top lever to a preselected position.
  • said second biasing means is a spring having one end connected to said retaining means.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
US00321793A 1972-01-14 1973-01-08 Top lever mechanism for firearms Expired - Lifetime US3791062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE778024A BE778024A (fr) 1972-01-14 1972-01-14 Dispositif de rattrapage de jeu pour clef de fermeture de fusilde chasse

Publications (1)

Publication Number Publication Date
US3791062A true US3791062A (en) 1974-02-12

Family

ID=3859120

Family Applications (1)

Application Number Title Priority Date Filing Date
US00321793A Expired - Lifetime US3791062A (en) 1972-01-14 1973-01-08 Top lever mechanism for firearms

Country Status (2)

Country Link
US (1) US3791062A (fr)
BE (1) BE778024A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090007477A1 (en) * 2004-02-13 2009-01-08 Rmdi, L.L.C. Firearm
USD777282S1 (en) * 2015-10-22 2017-01-24 Fn Herstal Sa Machine gun
WO2021040887A3 (fr) * 2019-07-02 2021-06-03 Savage Arms, Inc. Fusil à mécanisme à verrou à mouvement rectiligne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US399214A (en) * 1889-03-05 Breech-loading fire-arm
US528506A (en) * 1894-10-30 Beeakdown go
US1137045A (en) * 1914-09-05 1915-04-27 Mary E Johnson Barrel-locking device for guns.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US399214A (en) * 1889-03-05 Breech-loading fire-arm
US528506A (en) * 1894-10-30 Beeakdown go
US1137045A (en) * 1914-09-05 1915-04-27 Mary E Johnson Barrel-locking device for guns.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090007477A1 (en) * 2004-02-13 2009-01-08 Rmdi, L.L.C. Firearm
US7971382B2 (en) * 2004-02-13 2011-07-05 Rmdi, Llc Firearm
USD777282S1 (en) * 2015-10-22 2017-01-24 Fn Herstal Sa Machine gun
WO2021040887A3 (fr) * 2019-07-02 2021-06-03 Savage Arms, Inc. Fusil à mécanisme à verrou à mouvement rectiligne
US12031788B2 (en) 2019-07-02 2024-07-09 Savage Arms, Inc. Rifle with straight pull bolt action

Also Published As

Publication number Publication date
BE778024A (fr) 1972-07-14

Similar Documents

Publication Publication Date Title
US3739515A (en) Shoulder stock and receiver combination for firearms
US4222308A (en) Accuracy device for semi-automatic pistols
US3256632A (en) Foldable butt particularly suited for rifle convertible into a grenade thrower
US2930041A (en) Cartridge operated fastening gun
US3619930A (en) Firing mechanism with a pivoted finger piece mounted on a pivoted trigger link
US3221433A (en) Firearm crane and trigger construction
US2976638A (en) Subcaliber conversion assembly for revolvers
US3207037A (en) Pistol barrel mounting structure
IL43945A (en) Breech mechanism with positionable extractor for ejection of the ammunition casing to one side or the other and gun including it
US1892141A (en) Semiautomatic rifle
US6360467B1 (en) Muzzleloading rifle with pivotal bolt action
US2484977A (en) Safety mechanism for firearms
US3447527A (en) Cartridge for missiles of weapons
US3791062A (en) Top lever mechanism for firearms
US5375358A (en) Quick muzzle loading rifle and loader
US3975982A (en) Firearm with accurizing means
US3680433A (en) Semi-automatic shotgun having rotary and sliding breech block
US4000575A (en) Means for retraction of lower firing pin of over-and-under firearm
US3074322A (en) Breech mechanism for an artillery device of the muzzle-loading type
US870272A (en) Telescope-sight for firearms.
US1518027A (en) Revolver-cylinder lock
US2139648A (en) Gun
US1580968A (en) Firearm with screwed barrel detachable by hand or permanently fixed
US3411407A (en) Gun slide guiding devices
US3782240A (en) Firing mechanism for mortars