US2557134A - Breechblock return mechanism - Google Patents

Breechblock return mechanism Download PDF

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Publication number
US2557134A
US2557134A US425892A US42589242A US2557134A US 2557134 A US2557134 A US 2557134A US 425892 A US425892 A US 425892A US 42589242 A US42589242 A US 42589242A US 2557134 A US2557134 A US 2557134A
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US
United States
Prior art keywords
breech block
barrel
casing
firing
breech
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
US425892A
Other languages
English (en)
Inventor
Mudespacher Paul
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US2557134A publication Critical patent/US2557134A/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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/10—Spring-operated systems
    • F41A25/12—Spring-operated systems using coil springs
    • 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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/10—Spring-operated systems
    • 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
    • F41A3/82—Coil spring buffers
    • 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

Definitions

  • a disadvantage o'f the mass locked system is that there are limits to any increase in the rate of firing.
  • a rate of firing of over 300 shots per minute is scarcely attainable. But even in the case of weapons with a relatively light breech block, the maximum rate of firing is about 600 shots per minute.
  • the present invention solves the above mentioned problem by the fundamentally new idea in mass locked weapons of reducing the travel of the breech block, and hence the time between the individual shots, by movably mounting the barrel and the parts rigidly connected therewith. Hence, a counter movement is produced between the breech block on the one hand and the barrel on the other hand which considerably reduces the movement of the breech block.
  • FIG. 1 is a view of the invention v
  • FIG. 3 is a view"siimlilarto Fig. 2 but showing the parts atithe-in stant of firing.
  • barrel I is fixeld in the breec h casing 2 by means of a'bayori'et joint *3.
  • the housing 4 which is rigidly'fixed to th'e mountingare bufier springs emucerwmcn therear spring 6 acts as a buffer for the b'arrel if, in the extreme case, its
  • the breech block recoil spring 9 is arranged directly in the breech block casing 2 and bears at its rear end against a band [6.
  • the rear part of the breech block casing 2 slides in an enlargement of the housing 4 in which the trigger mechanism II is also arranged.
  • the trigger levers for continuous and single-shot firing are shown at M and [5.
  • the trigger setting takes place by rotation of a frame on which the roller of the lever I2 slides along with the movement of the barrel.
  • the return spring I0 is arranged round the front part of the barrel, and bears on a sleeve 13 screwed on to the housing 4.
  • Figs. 1 to 3 The manner of operation of the firearm shown in Figs. 1 to 3 is briefly as follows: In the stationary position shown in Figs. 1 and 2, the breech block recoil spring 9 is relieved from tension down to the pre-tension. If the firearm is cooked by drawing back the breech block I, the breech block recoil sprin is compressed. If now the trigger is set, the barrel and the breech block casing are driven rearwardly in opposition to the advancing breech block. The firing position is shown in Fig. 3, and, as can be seen, the barrel is situated in its rearmost position.
  • the breech block 1 will be driven backwards, the recoil spring 9 will be compressed, and the barrel and breech block casing will be driven forward under the action of the previously fully tensioned return spring I0, aided by the expandin explosion gases.
  • a massor inertia-locked automatic firearm comprising a housing, a, breech block casing movable within the housing, a barrel connected with the breech block casin to move therewith, a breech block slidable within the casing, and a recoil spring between the breech block and its casing and acting, after the expansion of the gases following the explosion of a cartridge, to cause the breech block and barrel to move toward each other into firing position, whereby the travel of the breech block is reduced.
  • a massor inertia-locked automatic firearm comprising a housing, a breech block casing slidthe recoil spring produces the afore-mentioned opposed movements of breech block and breech block casing.
  • a massor inertia-locked automatic firearm comprising a housing, a breech block casing slidable within the housing, a barrel rigidly connected with the casing to slide therewith, a breech block slidable within the casing, a recoil sprin between the breech block and casing and actin to urge the breech block forwardly and the casing rearwardly, whereby the travel of the the breech block is reduced, a return spring bearing on the barrel and housing and acting to urge the barrel forwardly, and buffer spring mechanism arranged to cushion the barrel toward the end point of its forward and rearward travel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Golf Clubs (AREA)
  • Buckles (AREA)
US425892A 1940-10-23 1942-01-07 Breechblock return mechanism Expired - Lifetime US2557134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH604188X 1940-10-23

Publications (1)

Publication Number Publication Date
US2557134A true US2557134A (en) 1951-06-19

Family

ID=4522927

Family Applications (1)

Application Number Title Priority Date Filing Date
US425892A Expired - Lifetime US2557134A (en) 1940-10-23 1942-01-07 Breechblock return mechanism

Country Status (4)

Country Link
US (1) US2557134A (de)
CH (1) CH215689A (de)
FR (1) FR876010A (de)
GB (1) GB604188A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695131A (en) * 1950-12-02 1954-11-23 Besler Corp Supercharger
US2821118A (en) * 1953-01-30 1958-01-28 Hispano Suiza Sa Automatic guns including a recoiling system
US2846926A (en) * 1954-12-14 1958-08-12 John W Kimball Floating barrel action for automatic pistol
WO1986002153A1 (en) * 1984-10-05 1986-04-10 Rostocil Charles E Heavy support weapon
US6099310A (en) * 1996-12-17 2000-08-08 Mediteam Dentalutveckling I Goteborg Ab Dental instrument
US20180231343A1 (en) * 2015-07-10 2018-08-16 Rheinmetall Waffe Munition Gmbh Recoil intensifier of an externally powered machine weapon, in particular a machine gun
US12209831B2 (en) * 2023-05-18 2025-01-28 Huai-Ku Sun Automatic circulation shooting mechanism

Families Citing this family (4)

* 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.
US3315567A (en) * 1965-08-10 1967-04-25 Avco Corp Automatic launcher for rocketboosted ammunition
US9921022B1 (en) * 2017-06-13 2018-03-20 Michael Noyce Merino Firearm with gas-assist recoil operation system
RU2763612C1 (ru) * 2021-07-15 2021-12-30 Александр Петрович Шарыпкин Конструкция затвора огнестрельного оружия и способ для изготовления затвора

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316279C (de) *
US863770A (en) * 1906-02-16 1907-08-20 William John Whiting Automatic firearm.
US891778A (en) * 1908-04-25 1908-06-23 Ludwig Mertens Non-recoiling firearm.
US958545A (en) * 1909-06-04 1910-05-17 Charles Henry Augustus Frederick Lockhart Ross Automatic firearm.
US2016646A (en) * 1932-06-03 1935-10-08 Mancini Niccolo Automatic firearm
US2093169A (en) * 1933-03-15 1937-09-14 Firm Ceskoslovenska Zbrojovka Automatic firearm, in particular machine gun
GB512228A (en) * 1938-12-23 1939-08-30 Oerlikon Buehrle Ag Automatic fire-arm with breech mechanism locked by inertia
GB517697A (en) * 1938-08-01 1940-02-06 Oerlikon Buehrle Ag Improvements in automatic fire-arms
CH215689A (de) * 1940-10-23 1941-07-15 Oerlikon Buehrle Ag Massenverriegelte automatische Feuerwaffe.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316279C (de) *
US863770A (en) * 1906-02-16 1907-08-20 William John Whiting Automatic firearm.
US891778A (en) * 1908-04-25 1908-06-23 Ludwig Mertens Non-recoiling firearm.
US958545A (en) * 1909-06-04 1910-05-17 Charles Henry Augustus Frederick Lockhart Ross Automatic firearm.
US2016646A (en) * 1932-06-03 1935-10-08 Mancini Niccolo Automatic firearm
US2093169A (en) * 1933-03-15 1937-09-14 Firm Ceskoslovenska Zbrojovka Automatic firearm, in particular machine gun
GB517697A (en) * 1938-08-01 1940-02-06 Oerlikon Buehrle Ag Improvements in automatic fire-arms
GB512228A (en) * 1938-12-23 1939-08-30 Oerlikon Buehrle Ag Automatic fire-arm with breech mechanism locked by inertia
CH215689A (de) * 1940-10-23 1941-07-15 Oerlikon Buehrle Ag Massenverriegelte automatische Feuerwaffe.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695131A (en) * 1950-12-02 1954-11-23 Besler Corp Supercharger
US2821118A (en) * 1953-01-30 1958-01-28 Hispano Suiza Sa Automatic guns including a recoiling system
US2846926A (en) * 1954-12-14 1958-08-12 John W Kimball Floating barrel action for automatic pistol
WO1986002153A1 (en) * 1984-10-05 1986-04-10 Rostocil Charles E Heavy support weapon
US5155292A (en) * 1984-10-05 1992-10-13 Greyden International Heavy support weapon
US6099310A (en) * 1996-12-17 2000-08-08 Mediteam Dentalutveckling I Goteborg Ab Dental instrument
US20180231343A1 (en) * 2015-07-10 2018-08-16 Rheinmetall Waffe Munition Gmbh Recoil intensifier of an externally powered machine weapon, in particular a machine gun
US11143476B2 (en) * 2015-07-10 2021-10-12 Rheinmetall Waffe Munition Gmbh Recoil intensifier of an externally powered machine weapon, in particular a machine gun
US12209831B2 (en) * 2023-05-18 2025-01-28 Huai-Ku Sun Automatic circulation shooting mechanism

Also Published As

Publication number Publication date
FR876010A (fr) 1942-10-12
GB604188A (en) 1948-06-30
CH215689A (de) 1941-07-15

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