US1987939A - Machine gun - Google Patents

Machine gun Download PDF

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Publication number
US1987939A
US1987939A US682711A US68271133A US1987939A US 1987939 A US1987939 A US 1987939A US 682711 A US682711 A US 682711A US 68271133 A US68271133 A US 68271133A US 1987939 A US1987939 A US 1987939A
Authority
US
United States
Prior art keywords
lock
pressing rod
piece
lock pressing
bolting
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
US682711A
Other languages
English (en)
Inventor
Lahti Aimo Johannes
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 US1987939A publication Critical patent/US1987939A/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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/02—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated
    • F41A5/08—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated having an accelerator lever acting on the breech-block or bolt during the opening movement
    • 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
    • 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
    • F41A3/38—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having rocking locking elements, e.g. pivoting levers or vanes
    • F41A3/40—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having rocking locking elements, e.g. pivoting levers or vanes mounted on the bolt
    • 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
    • F41A7/00—Auxiliary mechanisms for bringing the breech-block or bolt or the barrel to the starting position before automatic firing; Drives for externally-powered guns; Remote-controlled gun chargers
    • F41A7/02—Machine gun rechargers, e.g. manually operated

Definitions

  • the imprbvedymachine gun constructed according-r to..-my invention is composed of a much 1 smaller number of: parts than any other machine gun; may bev readilyoperatedand is not likely to getjout of order.
  • the construction is such that the machine gun may be set automatically solely by the aid of the lock pressing rod without moving the sliding device and the barrel.
  • the rigid connection between the barrel and the lock piece is established when the lock piece has moved so far forward that the setting sill of the lock pressing rod has forced the rear end of the bolting piece to rise in front of the support cam of the sliding device, the setting sill establishing the rigid connection.
  • the movement of the cocking bolt being compulsory and simultaneous with that of thelock pressing rod, the cooking bolt will immediately, as soon as the rigid connection has been established, hit the percussion cap, and it is thus impossible that an unexploded cartridge could remain in the hot barrel.
  • Fig.1 is a side elevation of my improved machine gun.
  • Fig. 2 is a longitudinal section of thesame.
  • Fig. 3 is a detail side elevation of the lock pressing rod.
  • Fig. 4 isa detail plan of the'same.
  • Figs. 5 and 6 are detail elevations of the bolting piece depressor.
  • the machine gun is set by the aid of a setting lever l which is movable in a groove-of the bottom of the casing.
  • a setting lever l which is movable in a groove-of the bottom of the casing.
  • the stud 1c of the setting lever moves rearwardly in the slot 211. in the under side of the lock pressing rod 2 until it reaches the rear end of said slot and then pulls the" lock pressing'rod 2 rearwardly, the setting sill Zbbeing moved along the lock pressing rod 2 which is under the bolting piece.
  • the cocking bolt 13 that is anchored, between the abutments 2h and 21' of the lock piece 6 will be compelled togfollowthe movement of the lock pressing rod so that on the latter moving rearwardly the point of the cocking bolt 13 is pulled into the lock piece 6.
  • the lock pressing rod 2 having moved so far rearwardly that the bevelled surfaces 20 of the grooves in the sides of the lock pressing rod engage the abutments 4a of the lower arms of the bolting piece depressor 4, the bolting piece depressor will be pressed down thereby also compelling the rear end 3a of the bolting piece 3 that is supported against the supporting surface 5a of the sliding device 5 to move downwardly.
  • the rigid connection is hence broken and the lock piece 6 will now follow the movement of the lock pressing rod 2 rearwardly.
  • the cartridge is fired by pulling the trigger 12, which releases the holder 10 of the lock pressing rod, so that the set lock pressing rod 2 is freed.
  • the spring 11 thereupon forcibly moves said rod 2 forwardly.
  • the lock pressing rod 2 moves the lock piece 6 forwardly therewith, so that the bolting piece 3 is lowered and the bevelled surface 31) at the lower face of the bolting piece, 3 lies against the bevelled surface of the setting sill of the lock pressing rod.
  • the upper face of the sliding device 5 preventsthe bolting piece from rising which it tends to do during the forward movement of the lock piece.
  • the bevelled surface 29 of the setting sill of the lock pressing rod 2 serves to lift the rear end 3a of the bolting piece 3 against the support surface 5a of the sliding device 5, and hence the rigid connection between the barrel 7 and the lock piece 6 is established.
  • its setting sill 2b reaches a point under the rear end 3a of the bolting piece 3 and thereby prevents falling of the bolting piece 3, thus establishing the rigid connection.
  • the cocking bolt 13 situated between the abutments 2h, 2i of the lock pressing rod 2 strikes the percussion cap and the cartridge is fired.
  • a casing a barrel arranged for longitudinal movement, a lock pressing rod longitudinally movable in the casing and having a cam, a spring to move the lock pressing rod forwardly, a lock piece on the lock pressing rod, movable therewith and also movable to a limited extent longitudinally and independently of said lock pressing rod, a bolting piece arranged at the rear end of the lock piece, pivotally connected thereto, and movable by the cam of.
  • the lock pressing rod a firing pin carried by the lock piece, movable longitudinally to a limited extent independently thereof and also movable to a limited extent by the lock pressing rod, a sliding device in rear of the lock piece and engageable by the bolting piece when the latter is moved by the cam of the lock pressing rod during forward movement of the latter to thereby effect a rigid connection between the lock piece and the breech of the barrel, a spring to prevent casual rearward movement of the sliding device and'trigger mechanism to lock the lock pressing rod in cocked position against the compression of its spring.
  • A'firearm as claimed in claim 1, including a bolting piece presser arranged between the rear end of the lock piece and the front end of the sliding device and arranged above the bolting piece, said bolting piece presser having a depending arm provided with an inwardly extending lug and said lock pressing rod having a groove in one side in which said lug operates.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Emergency Lowering Means (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US682711A 1933-05-22 1933-07-28 Machine gun Expired - Lifetime US1987939A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI1987939X 1933-05-22
GB20381/33A GB424565A (en) 1933-05-22 1933-07-19 Improvements in or relating to automatic guns
FR764199T 1933-09-08

Publications (1)

Publication Number Publication Date
US1987939A true US1987939A (en) 1935-01-15

Family

ID=8556928

Family Applications (1)

Application Number Title Priority Date Filing Date
US682711A Expired - Lifetime US1987939A (en) 1933-05-22 1933-07-28 Machine gun

Country Status (4)

Country Link
US (1) US1987939A (en))
BE (1) BE398478A (en))
FR (1) FR764199A (en))
GB (1) GB424565A (en))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058398A (en) * 1959-12-23 1962-10-16 Aircraft Armaments Inc Automatic machine gun with recoiling barrel and hydraulic accelerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058398A (en) * 1959-12-23 1962-10-16 Aircraft Armaments Inc Automatic machine gun with recoiling barrel and hydraulic accelerator

Also Published As

Publication number Publication date
GB424565A (en) 1935-02-19
FR764199A (fr) 1934-05-15
BE398478A (en)) 1933-10-31

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