US2370363A - Automatic firearm - Google Patents

Automatic firearm Download PDF

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Publication number
US2370363A
US2370363A US286787A US28678739A US2370363A US 2370363 A US2370363 A US 2370363A US 286787 A US286787 A US 286787A US 28678739 A US28678739 A US 28678739A US 2370363 A US2370363 A US 2370363A
Authority
US
United States
Prior art keywords
barrel
breech block
cylinder
breech
fire
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
US286787A
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English (en)
Inventor
Lippert Hans Julius
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 US2370363A publication Critical patent/US2370363A/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
    • F41A3/54—Bolt locks of the unlocked type, i.e. being inertia operated
    • 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
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/78—Bolt buffer or recuperator means
    • F41A3/90—Fluid buffers
    • F41A3/94—Fluid buffers in combination with spring buffers

Definitions

  • the present invention satises both requirements by employing a novel locking system, which makes it possible to effect locking in the same way as in the mass-locking method without mechanical locking means, while at the same time permitting the application of small, rapidly movable breech block masses with recuperator springs of low tension.
  • Fig. 1 is a vertical section through the automatic gun along the longitudinal axis of the barrel;
  • Fig. 2 represents a horizontal section
  • Fig. 3 is a transverse section along the line II-II of Fig. 2; while Figs. 4 and 5 show the parts in different positions.
  • the barrel of the gun is shown at I, and is supported within the casing 3, in which is disposed the breech sleeve 2 connected to the barrel.
  • the breech block 4 and the recuperator spring 5 are longitudinally guided.
  • the barrel is not rigid with the casing 3 as is usual, but slides in the casing 3 along with the breech sleeve 2 connected therewith.
  • the recuperator spring E urges the barrel with the breech sleeve 2 against the stop or abutment 3d.
  • the casing 3 is rigidly connected with the gun mount l5 at the extension 3c by means of the bolts I6.
  • the cartridge magazine is shown at 9.
  • pistons II Connected with the breech block 4 by way of the connecting bar 8 and the rods I0 are pistons II which move in the bores of the two brake cylinders l.
  • the pistons II are provided each with a non-return valve I2 pressed against their seats by the springs I3.
  • the pistons II are further provided with through channels IIa controlled by the valve I2, and also with slits IIb in the valveseatleadingfromtheehannala 'ilabutnot citrolled by the valves.
  • the lll'ahev cylinders are filled with a suitable liquid indicated at Il.
  • the displaced duid can escape only through the passages Ila and lib and against the action of the springs Il so that a resistance is opposed to the forward movement of the pistons
  • the operation of the illustrated fire-arm is as follows: Prom the open breech position. as shown in Figures l and 2, the breech block is projected forwardly by the recuperator spring I. 'Ihe two pistons il move the liquid il rearwardly through the transfer passages 1b. During the whole of the forward stroke, the barrel and breech sleeve .s in their moet advanced position are pressed against the stop Id by the recuperator springs l.
  • An automatic fire-arm comprising a casing. a barrel slidable in said casing. a slidable breech block, a liquid filled cylinder rigidly connected with the barrel, a piston slidable in said cylinder and connected with the breech block, and means acting to create a resistance to the movement of as the piston within the cylinder during the initial rearward movement of the breech block to compel the cylinder and barrel to move with the breech block, whereby the masses of the breech block. cylinder and barrel are coupled for absorbing the forces created by the gas pressures.
  • An automatic fire-arm comprising a casing.
  • a barrel slidable in said casing a slidable breech l block, a liquid filled cylinder rigidly connected with the barrel.
  • said cylinder including a transfer passage for the liquid from the forward to the rearward part of the cylinder and vice versa. the forward connection between the cylinder and passage being spaced from the forward end of the cylinder.
  • said means including a channel in the piston limiting the movement of fluid from the rear to the forward portions of. the cylinder during the period that the piston covers the said cylinder including a transfer passage for the liquid from the forward to the rearward part of the cylinder and vice versa, the forward connection between the cylinder and passage being spaced from the forward end of the cylinder, whereby the piston closes such connection in its forward position, said means including a channel in the piston limiting the movement of fluid from the rear to the forward portions of the cylinder during the period that the piston covers the said connection in its rearward movement, and a nonreturn valve arranged to partially close said channel and to be unseated during the forward movement of the piston.
  • An automatic fire-arm of the mass-locked type comprising a casing, a barrel slidable therein, a slidable breech block, a hydraulic coupling having parts connected to the barrel and breech block, said coupling including means whereby said coupling connects the barrel and breech block to cause the two to move together during the initial rearward, recoil movement of the block, subsequently effective means for substantially releasing the connection between the barrel and block, and mechanism for returning the barrel and breech block to iiring position.
  • An automatic fire-arm comprising a casing, a barrel and a breech block both slidable in said casing, the barrel being slidable rearwardly from the ring position, a recoil spring acting on the barrel and urging it forwardly to ring position, an automatic hydraulic coupling between the breech block and barrel and acting upon the explosion of a projectile charge to couple the mass of the barrel to that of the breech block, the inertia of the breech block barrel and coupling constituting the only initial resistance to the rearward movementI of the breech block, the hydraulic coupling being provided with means for gradually releasing the interlock 'between the breech block and barrel, whereby relative movement ltherebetween occurs as the breech block recedes further from ring position, and recoil mechanism for returning the breech block to ring position.
  • An automatic fire-arm comprising a casing, a barrel and a breech block slidable in said casing, the' barrel being slidable rearwardly from firing position, recoil mechanism for returning the barrel and breech block to firing position, and mechanism for utilizing the inertia of the breech block and of the barrel for initially and temporarily resisting recoil movement of the breech block, saidmechanism comprising a pair of hydraulic cylinders connected with the barrel, pistons in said cylinders connected with the breech block, means in said cylinders interposing a high resistance to the flow of liquid from the rear to the forward portions of the cylinders, means in said cylinders affording a low resistance path for the liquid after the pistons have travelled a limited distance, whereupon rapid relative movement betweemthe breech block and barrel takes place, said cylinders providing a low resistance path for liquid from the forward to the rearward portions of the cylinder upon forward travel of the pistons.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Toys (AREA)
US286787A 1938-08-01 1939-07-27 Automatic firearm Expired - Lifetime US2370363A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH226251T 1938-08-01
GB23126/38A GB517697A (en) 1938-08-01 1938-08-04 Improvements in automatic fire-arms

Publications (1)

Publication Number Publication Date
US2370363A true US2370363A (en) 1945-02-27

Family

ID=32108621

Family Applications (1)

Application Number Title Priority Date Filing Date
US286787A Expired - Lifetime US2370363A (en) 1938-08-01 1939-07-27 Automatic firearm

Country Status (4)

Country Link
US (1) US2370363A (de)
CH (2) CH226251A (de)
FR (1) FR859379A (de)
GB (1) GB517697A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846926A (en) * 1954-12-14 1958-08-12 John W Kimball Floating barrel action for automatic pistol
US4957033A (en) * 1988-06-30 1990-09-18 Dominique Relange Device for sealing the mobile elements of an artillery recoil brake

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH215689A (de) * 1940-10-23 1941-07-15 Oerlikon Buehrle Ag Massenverriegelte automatische Feuerwaffe.
US2547180A (en) * 1948-12-20 1951-04-03 Frank S Taylor Rifle construction
US2865255A (en) * 1955-08-03 1958-12-23 Weapons Inc Firearm with transversely movable barrel chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846926A (en) * 1954-12-14 1958-08-12 John W Kimball Floating barrel action for automatic pistol
US4957033A (en) * 1988-06-30 1990-09-18 Dominique Relange Device for sealing the mobile elements of an artillery recoil brake

Also Published As

Publication number Publication date
CH239694A (de) 1945-10-31
FR859379A (fr) 1940-12-18
GB517697A (en) 1940-02-06
CH226251A (de) 1943-03-31

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