US2396564A - Firearm - Google Patents

Firearm Download PDF

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Publication number
US2396564A
US2396564A US253661A US25366139A US2396564A US 2396564 A US2396564 A US 2396564A US 253661 A US253661 A US 253661A US 25366139 A US25366139 A US 25366139A US 2396564 A US2396564 A US 2396564A
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US
United States
Prior art keywords
bolt
slider
receiver
shoes
locking
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
US253661A
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English (en)
Inventor
Gal Alessandro
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2396564A publication Critical patent/US2396564A/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
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/36—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing
    • F41A3/44—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having sliding locking elements, e.g. balls, rollers
    • F41A3/46—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having sliding locking elements, e.g. balls, rollers mounted on the bolt

Definitions

  • This invention relates to breech closing means for firearms and more particularly for automatic and semi-automatic firearms and it comprises a breech closing mechanism in which the breech bolt cooperates with a slider mounted to move longitudinally with respect thereto, said slider cooperating with means to lock said breech bolt in breech closing position.
  • FIG. 1 is a longitudinal fragmentary section on the barrel axis of an arm equipped with the means of this invention the breech bolt being in closed position.
  • Fig. 2 is a longitudinal section similar to Fig. 1 with the breech bolt in open position;
  • Fig. 3 is a longitudinal section, on an enlarged scale, through the firearm of Fig. 1 taken along the line 3-3 thereof;
  • Fig. 4 is a cross-section, also on an enlarged scale, through the firearm of Fig. 1 taken along the line 4-4 thereof and looking in the direction of the'arrows;
  • Fig. 5 is a side view of a separate locking member and Fig. 6 is a top plan view of the locking member shown in Fig. 5.
  • Fig. 7 is a perspective view of the locking member oi'Fig. 5.
  • l denotes the firearm barrel and 2 denotes the receiver which has grooves 8 in internal faces of opposite walls thereof, said grooves being connected with sloping seats I0 which diverge transversely to the respective grooves 8 connected therewith and are inclined to the direction in which said groove extends.
  • An elongated member 26 which serves as a breech bolt is mounted to reciprocate in the chamber confined within the receiver 2 and said enters; said spring abuts on a plug 34 closingthe receiver 2 at its rear end.
  • the bolt 26 has a transverse slot 35 bounded by side portions 26' intermediate its extension 30 and its spring socket 3
  • the slider 32 has upper and lower extensions 33 adapted to embrace the bolt central extension 30 and to abut on the transverse faces 29 of the bolt 26.
  • each of said shoes includes a main body (Figs. 5, 6 and 7) having transverse faces 36, 31 at its longitudinal ends and a uiding lug II adapted to enter a cooperating receiver groove 8.
  • the locking shoe 9 provides a nose confined by longitudinally extending faces I2, I 2 and by sloping end faces I3, I3, the faces l2, I2 being intended to slide along cooperating surfaces of the receiver 2 and slider 32 while the sloping faces I3, I3 have an inclination registering with that of the side surfaces of the sloping seats Ill.
  • the sloping seats H] extend downwardly beyond the inner levels of the grooves 8, so that when the shoes 9 arrive in locking position adjacent the openings of the sloping seats III, the inclined faces I3, I3 engage the said seats at said openings and the shoes 9 move outwardly into the chambers or spaces provided between the slider 32 and the bolt lugs 28, and thus into the locking position shown in Fig. 1, in which the faces I2, I2 of the shoes lie in the seats I0.
  • the striker includes a stem [4 having an end pin l4 said stem i4 is connected with the slider 32 and extends throughout a central bore of the bolt 26 where a spring I5 is located, this spring abutting on a flange M" of the stem M at one of its ends and on a sleeve 38 fast in the bolt 26 at its opposite end.
  • the spring I5 is thus operative both to drive the striker forward and to move the slider 32 into its advanced position which corresponds with the 'bolt locked position.
  • the slider 32 is provided with a transverse hold the bolt 26 in open position and the striker spring cocked, said sear
  • the bolt 26 has in turn on the path of the finger I8 a similar finger I8 which is engaged by the finger IS in its recoil stroke.
  • the firearm receiver 2 In the position of the parts shown in Fig. 1 the firearm receiver 2 is closed by the front face of the rod 21 of the bolt 26 located against the rear end of the bore of the barrel I Ihe breech bolt 26 is in turn locked. by the locking shoes 9 which abut on the transverse faces 29 thereof and are in turn engaged within the seats ll] of the receiver 2 said shoes 9 being restricted from coming out therefrom due to their abutment against the sides of the extensions 33 of the slider 32.
  • the breech is thus closed in a fully efiicient manner and its closing is the more reliable the greater the rearward thrust exerted on the bolt 21, 26 because said thrust is imparted to locking shoes 9 which are thus wedged intermediate the faces of the inclined seats l0 and the slider extensions 33.
  • thus recoils under the action of the shot firing gases and imparts a blow on the finger I8; the slider 32 is thus caused to recoil against the action of the striker spring l5 whilst the bolt 26 at first remains stationary due to the longitudinal gap intermediate said slider 32 and the bolt '26.
  • the slider 32 may thusreach its most advanced position to drive the striker pin i4, I4 against the cap of a fresh cartridge fed in the barrel bore only after said shoes 9 have entirely released the path of the extensions 33- of the slider 32 and Accordingly the shot is fired'only at the time the bolt is fully closed and looked that is when the bolt 26 is engaged bythe shoes 9 which in turn abut against thesides of the slider extensions39. j
  • a receiver and a barrel extending from said receiver, an elongated breech bolt mounted to reciprocate in said receiver, said bolt having a slot intermediate its ends and an axial bore in its forward end portion, and formed with a rearwardly opening socket, means for urging said bolt in a position to closed said barrel, said means including a spring, one end of which spring bears against said receiver and the other end against said bolt in said socket, said receiver having in the internal surface of its wall a longitudinal guideway having an extension in a direction inclined to the reciprocatory path of said bolt, a slider mounted in said receiver and in said slot of said bolt to reciprocate with respect to said bolt, a firing pin connected with said slider and extending through said bore of said bolt, bolt locking means wholly independent of said bolt and slider and mounted to move in said receiver guideway along the path of said bolt in said receiver, sloping lug on said locking means arranged to enter said inclined extension of said guideway and when engaged therein to hold said locking means engaged with said slider and said bolt to lock said bolt

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Piles And Underground Anchors (AREA)
US253661A 1937-09-27 1939-01-30 Firearm Expired - Lifetime US2396564A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT206755X 1937-09-27
IT2396564X 1938-02-05

Publications (1)

Publication Number Publication Date
US2396564A true US2396564A (en) 1946-03-12

Family

ID=32109303

Family Applications (1)

Application Number Title Priority Date Filing Date
US253661A Expired - Lifetime US2396564A (en) 1937-09-27 1939-01-30 Firearm

Country Status (5)

Country Link
US (1) US2396564A (en))
BE (1) BE432561A (en))
CH (2) CH206755A (en))
FR (2) FR843854A (en))
GB (1) GB524641A (en))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527895A (en) * 1946-05-04 1950-10-31 Firm Soc It Ernesto Breda Per Sliding lock for breech bolts of automatic shotguns
US2732768A (en) * 1956-01-31 E browning
US8807010B2 (en) 2011-08-24 2014-08-19 Merkel Jagd-und Sportwaffen GmbH Pistol with barrel locking device
US20200103187A1 (en) * 2018-07-24 2020-04-02 Saeilo Enterprises, Inc. Firearm action
US11175111B2 (en) * 2017-10-10 2021-11-16 Armsan Silah Sanayi Ve Ticaret Anonim Sirketi Mechanism structure for firearms

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB723090A (en) * 1951-08-22 1955-02-02 Mini Of Supply Breech mechanism for automatic and self-loading rifle
NL132548C (en)) * 1964-03-20
US3822883A (en) * 1971-01-11 1974-07-09 Vos J De Compartmented net target and play field
US4505183A (en) * 1982-12-02 1985-03-19 O. F. Mossberg & Sons, Inc. Gas actuated operating mechanism for autoloading firearm
US6460281B1 (en) 2001-09-04 2002-10-08 David Schaeffer Single trigger sequential firing mechanism for a double barrel firearm

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732768A (en) * 1956-01-31 E browning
US2527895A (en) * 1946-05-04 1950-10-31 Firm Soc It Ernesto Breda Per Sliding lock for breech bolts of automatic shotguns
US8807010B2 (en) 2011-08-24 2014-08-19 Merkel Jagd-und Sportwaffen GmbH Pistol with barrel locking device
US9488431B2 (en) 2011-08-24 2016-11-08 Merkel Jagd— & Sportwaffen Gmbh Pistol with barrel locking device
US11175111B2 (en) * 2017-10-10 2021-11-16 Armsan Silah Sanayi Ve Ticaret Anonim Sirketi Mechanism structure for firearms
US20200103187A1 (en) * 2018-07-24 2020-04-02 Saeilo Enterprises, Inc. Firearm action
US10895424B2 (en) * 2018-07-24 2021-01-19 Saeilo Enterprises, Inc. Firearm action
US20210348861A1 (en) * 2018-07-24 2021-11-11 Saeilo Enterprises, Inc. Firearm action
US11828559B2 (en) * 2018-07-24 2023-11-28 Saeilo Enterprises, Inc. Firearm action

Also Published As

Publication number Publication date
BE432561A (en)) 1939-03-31
CH206755A (fr) 1939-08-31
FR843854A (fr) 1939-07-12
CH209583A (fr) 1940-04-15
FR50204E (fr) 1940-01-20
GB524641A (en) 1940-08-12

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