US3052053A - Twist-open firearm - Google Patents

Twist-open firearm Download PDF

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Publication number
US3052053A
US3052053A US92531A US9253161A US3052053A US 3052053 A US3052053 A US 3052053A US 92531 A US92531 A US 92531A US 9253161 A US9253161 A US 9253161A US 3052053 A US3052053 A US 3052053A
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US
United States
Prior art keywords
barrel
butt stock
pin
assembly
twist
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
US92531A
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English (en)
Inventor
Edwin S Vartanian
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 US92531A priority Critical patent/US3052053A/en
Priority to GB7657/62A priority patent/GB934319A/en
Priority to BE614560A priority patent/BE614560A/fr
Priority to DEO8598A priority patent/DE1190360B/de
Priority to FR889719A priority patent/FR1316411A/fr
Application granted granted Critical
Publication of US3052053A publication Critical patent/US3052053A/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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/02—Block action, i.e. the main breech opening movement being transverse to the barrel axis
    • F41A3/04—Block action, i.e. the main breech opening movement being transverse to the barrel axis with pivoting breech-block
    • 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
    • F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
    • F41A15/08—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for block-action guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C23/00—Butts; Butt plates; Stocks
    • F41C23/16—Forestocks; Handgrips; Hand guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C7/00—Shoulder-fired smallarms, e.g. rifles, carbines, shotguns
    • F41C7/11—Breakdown shotguns or rifles

Definitions

  • TWIST-OPEN FIREARM Filed March 1 1961 3 Sheets-Sheet 3 INVENTOR. 54 EDWIN S,VARTAN ⁇ AN United States Patent C) 3,052,053 TWIST-OPEN FIREARM Edwin S. Vartanian, North Haven, Conn., assignor to Olin Mathieson Chemical Corporation, a corporation of Virginia Filed Mar. 1, 1961, Ser. No. 92,531 4 Claims. (CI. 4213)
  • the present invention relates to firearms and relates in particular to a twist-open shotgun or to a twist-open rifle.
  • a particular feature of the invention is the provision of a novel, inexpensive firearm.
  • a further feature of the invention is the provision of a shotgun or a rifle having, basically, two main elements, namely, a butt stock which includes a trigger group and a locking block and a separable bar-rel including a barrel block.
  • a further feature of the invention is that there is provided a shotgun or a rifle whose construction and arrangement eliminates a receiver element.
  • a still further feature of the invention is the provision of a shotgun or a rifle having a novel forearm.
  • a twist-open firearm embracing certain features of the present invention may comprise a butt stock, a locking block secured to the butt stock and a barrel including a barrel block, said barrel being detachably connected to the butt stock through the barrel block and the locking block, said barrel being rotatable relative to the butt stock about an axis generally parallel to the barrel axis, a removable forearm carried by the barrel and pin means rigidly fixed to the locking block and cooperating with the barrel block to connect the barrel to the butt stock and to lock the forearm to the barrel.
  • FIG. 1 is a perspective view of a twist-open shotgun embracing the principles of the present invention
  • FIG. 2 is an illustration similar to FIG. 1 showing the barrel rotated to a loading and/or ejection position
  • FIG. 3 is a vertical section of a portion of the illustration of FIG. 1 as viewed in the plane of the lines 33;
  • FIG. 4 is a perspective view of the forearm
  • FIG. 5 is a perspective view of the locking block
  • FIG. 6 shows the relative position of the barrel and butt stock just prior to the ejection of a spent shell
  • FIG. 7 shows the barrel fully rotated relative to the butt stock to the open position ready for loading.
  • the basic elements of the shotgun comprise a barrel 10 and a butt stock 11 hinged together by means of a lock carrying a pin 17 received in a barrel block 18 so that the barrel may be rotated relative to the butt stock about an axis yy (which is generally parallel to the longitudinal axis of the barrel from a closed position as shown in FIG. 1 to an open position indicated in FIG. 2).
  • the butt stock 11 carries a trigger assembly, indicated generally by the reference numeral 12.
  • the trigger assembly forms no part of the present invention, it is not deemed necessary to describe this portion of the firearm in detail except to state that the reference numeral 13 designates manually operated cocking lever while 14 designates a firing pin and the reference numeral 16 denotes the trigger.
  • the barrel 10 is hinged to the butt stock 11 by means of a hinge pin 17 rigidly fixed to locking block 15 in turn fastened to the butt stock 11 by any suitable means.
  • the locking block 15 is connected to the butt stock 11 by means of 3,052,053 Patented Sept. 4, 1962 ice screws introduced into the mounting holes 19--19 as is most apparent in FIG. 5.
  • the barrel block 18 receives the barrel 10 in a pressed fit and is formed with a bore 21 which makes a sliding fit with the hinge pin 17.
  • the barrel is rotatable relative to the butt stock about the hinge pin as previously described and, in addition, it is possible to separate the barrel 10 from the butt stock 11 by grasping the barrel in one hand and the stock in the other.
  • split 'O-ring 22 is depressed into a groove formed in the pin 17 in well known fashion and the barrel 10 and the barrel block 18 slide off the pin 17 as a unit.
  • a plastic forearm 20 is carried by the barrel and held locked to the barrel by special cooperation with the hinge pin 17, as will be described in detail hereinafter.
  • the forearm is of plastic material and by virtue of its generally U-shaped structure and relatively thin sidewalls has a property of resilience.
  • the wings 23 and 24 are shaped generally in the conformation of the barrel in the region indicated by the reference numeral 25 (.FIG. 1) so that this portion of the forearm is snapped around the barrel suitably separating the wings 23 and 24 with the result that the forward portion of the forearm is retained frictionally.
  • the rear end of the forearm is formed with a plastic bridge element 26 molded integrally with the body of the forearm and is further characterized by an arcuate saddle 27 operative to engage and snugly contact an undercut 28 formed in the barrel 10.
  • the bottom of the bridge 26 is formed with an arcuate cut-out 29 corresponding to the radius of the right end 31 of the hinge pin 17 so that when the barrel 10 carrying the forearm is assembled to the butt stock 11 by sliding the barrel block 18 relative to the butt stock with the bore 21 receiving the pin 17, the right end 31 of the pin 17 engages the cut-out 29 to hold the bridge 26 snugly into interlocking engagement with the undercut 28 formed in the barrel.
  • the bore .21 formed in the barrel block receives pin 17, as previously described, and upon seating the barrel block 118 on the pin 17 to the position shown in FIG. 3, O-ring 22 is free to snap outwardly against a chamfer 30 formed in the barrel block operative to retain the barrel 10 and the butt stock 11 against relative axial motion but the members are free to rotate about the pin.
  • the barrel block 18 is formed with a cut-out portion indicated generally by the reference numeral 36 and is utilized to house an ejector lock assembly comprising a combined ejector-lock pin 3-7 urged constantly to the left, as viewed in FIG. 3, by a coil spring 38 seated on the right in a recess 39 formed in the plastic bridge member 3-6 and urged upwardly by a leaf spring 42.
  • the ejector-lock pin 37 is obviously free to reciprocate axially and is free to move upwardly and downwardly as will be described in more detail hereinafter.
  • lug 52 encounters a chamfer 53 on the barrel 10 and the interference developed between these two surfaces is operative to drive the left end of the member 37 downwardly against the action of leaf spring 42 so that lug 48 is dropped downwardly clear of the chamber and so as not to interfere with loading.
  • a reference to FIG. 7 shows the lug 48 cast downwardly by the action just described and new shell 54 may be readily introduced without interference.
  • the ejector lug effectively moves to the right and upwardly as viewed in FIGS. 3 and 7 to a position forward of the rim of a shotshell so as to be conditioned for subsequent ejection.
  • the pin 37 serves as a combined ejector and lock.
  • the forearm 22 by virtue of its bridge structure, cooperates with the barrel hinge pin 17 to lock the forearm to the barrel.
  • the barrel 10 is readily separable from the butt stock 11.
  • a twist-open firearm comprising two main assemblies characterized by a composite butt stock assembly and a separable barrel assembly including a chamber, said first assembly being fitted with pin means operative to receive and support the barrel assembly whereby the barrel is rotatable relative to the butt stock assembly to expose the chamber, a removable forearm operative to engage the barrel assembly frictionally at its forward end and having a bridge member at its rear end cooperating with the pin means and the barrel assembly whereby the forearm is held fixed when the butt stock assembly and barrel assembly are operatively connected, a combined ejector and look means carried by the barrel assembly and cooperating with said butt stock assembly effective to eject a spent cartridge when the barrel assembly is rotated to an open position relative to the butt stock assembly and operative to engage and lock the butt stock assembly to the barrel assembly when said assemblies are in a firing position.
  • a twist-open firearm comprising a butt stock and a barrel assembly including a barrel, said barrel assembly being detachably connected to the butt stock and being rotatable relative to the butt stock about an axis generally parallel to the barrel axis, a removable forearm carried by the barrel, hinge means rigidly fixed to the butt stock and operative to connect the barrel assembly to the butt stock and to lock the forearm to the barrel and a combined ejector and lock means carried by the barrel assembly operative to lock the butt stock to the barrel assembly.
  • hinge means comprises a pin rigidly fixed to the butt stock and a barrel block rigidly fixed to the barrel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US92531A 1961-03-01 1961-03-01 Twist-open firearm Expired - Lifetime US3052053A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US92531A US3052053A (en) 1961-03-01 1961-03-01 Twist-open firearm
GB7657/62A GB934319A (en) 1961-03-01 1962-02-27 Twist-open firearms
BE614560A BE614560A (fr) 1961-03-01 1962-03-01 Perfectionnements aux fusils de chasse
DEO8598A DE1190360B (de) 1961-03-01 1962-03-01 Gewehr mit einem schwenkbaren Lauf
FR889719A FR1316411A (fr) 1961-03-01 1962-03-01 Fusil de chasse à ouverture par rotation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US92531A US3052053A (en) 1961-03-01 1961-03-01 Twist-open firearm

Publications (1)

Publication Number Publication Date
US3052053A true US3052053A (en) 1962-09-04

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ID=22233671

Family Applications (1)

Application Number Title Priority Date Filing Date
US92531A Expired - Lifetime US3052053A (en) 1961-03-01 1961-03-01 Twist-open firearm

Country Status (4)

Country Link
US (1) US3052053A (fr)
BE (1) BE614560A (fr)
DE (1) DE1190360B (fr)
GB (1) GB934319A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728809A (en) * 1970-10-02 1973-04-24 Mbass Projectile launcher baton
US4689912A (en) * 1986-06-26 1987-09-01 Weapon Technology System R & D Ltd. Hand-held high-velocity grenade launcher
US20050268516A1 (en) * 2004-06-03 2005-12-08 Nelson James B Gun stock pivot
US7437847B1 (en) 2006-10-30 2008-10-21 Mabry James B Pivotable shoulder stock for a handgun
US7552557B1 (en) 2008-05-16 2009-06-30 Mabry James B Pivotable shoulder stock and handgun combination
US10345060B2 (en) 2014-03-19 2019-07-09 Suzhou Superior Industrial Technology Co., Ltd. Recoil mitigation and buttstock floating system, method, and apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243589A1 (de) * 1992-12-18 1994-06-23 Thomas Schade Drehverschluß für einläufige und zweiläufige Jagdwaffen
DE19700482C2 (de) * 1997-01-09 2001-04-19 Mayr Jun Schußwaffe mit Drehverschluß

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US209925A (en) * 1878-11-12 Improvement in breech-loading fire-arms
US548075A (en) * 1895-10-15 Breech-loading firearm
US801295A (en) * 1904-04-27 1905-10-10 Peter F Zeise Firearm.
US2447229A (en) * 1947-07-11 1948-08-17 George T Bradley Shotgun forearm

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR647379A (fr) * 1928-01-14 1928-11-23 Fusils à canons superposés rotatifs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US209925A (en) * 1878-11-12 Improvement in breech-loading fire-arms
US548075A (en) * 1895-10-15 Breech-loading firearm
US801295A (en) * 1904-04-27 1905-10-10 Peter F Zeise Firearm.
US2447229A (en) * 1947-07-11 1948-08-17 George T Bradley Shotgun forearm

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728809A (en) * 1970-10-02 1973-04-24 Mbass Projectile launcher baton
US4689912A (en) * 1986-06-26 1987-09-01 Weapon Technology System R & D Ltd. Hand-held high-velocity grenade launcher
US20050268516A1 (en) * 2004-06-03 2005-12-08 Nelson James B Gun stock pivot
US7024812B2 (en) * 2004-06-03 2006-04-11 Nelson James B Gun stock pivot
US7437847B1 (en) 2006-10-30 2008-10-21 Mabry James B Pivotable shoulder stock for a handgun
US7552557B1 (en) 2008-05-16 2009-06-30 Mabry James B Pivotable shoulder stock and handgun combination
US10345060B2 (en) 2014-03-19 2019-07-09 Suzhou Superior Industrial Technology Co., Ltd. Recoil mitigation and buttstock floating system, method, and apparatus

Also Published As

Publication number Publication date
BE614560A (fr) 1962-09-03
DE1190360B (de) 1965-04-01
GB934319A (en) 1963-08-14

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