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US2725655A - Cartridge ejector - Google Patents

Cartridge ejector Download PDF

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Publication number
US2725655A
US2725655A US257690A US25769051A US2725655A US 2725655 A US2725655 A US 2725655A US 257690 A US257690 A US 257690A US 25769051 A US25769051 A US 25769051A US 2725655 A US2725655 A US 2725655A
Authority
US
United States
Prior art keywords
case
breech
ejector
cartridge
levers
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
US257690A
Other languages
English (en)
Inventor
Maillard Bernard
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.)
Brevets Aero Mecaniques SA
Original Assignee
Brevets Aero Mecaniques SA
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 Brevets Aero Mecaniques SA filed Critical Brevets Aero Mecaniques SA
Application granted granted Critical
Publication of US2725655A publication Critical patent/US2725655A/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
    • 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
    • F41A15/12—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 bolt-action guns
    • F41A15/16—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 bolt-action guns the ejector being mounted on the breech housing or frame

Definitions

  • the ejector k.device essentially by two movable parts ,mounted like a pair of tongs, preferably V'in pivoting fashion, on the breech case ,of uthe arm Lon .either side of ⁇ the :path ⁇ of travel of the cartridge case when said cartridge case is moved rearwardly by the movable breech block, said parts being positively compelled by said movable breech block, during its recoil stroke, to move from retracted positions toward each other until they bear upon the body of the cartridge case and compel it to swing down by exerting thereon, through a squeezing action which lasts for a substantial portion of this turning period, a thrust perpendicular to the movement of the breech block.
  • Figs. 1 and 2 show in horizontal section, respectively in two characteristic positions of its operation, a portion of the breech mechanism and in particular of the ejector system ot an automatic arm according to my invention.
  • Figs. 3 and 4 show the same portion of the breech mechanism, respectively in sectional elevation and in cross section on the line IV-IV of Fig. 3, a plurality of successive positions occupied by the cartridge case in the course of the ejector phase being diagrammatically shown on these two figures.
  • Fig. 5 is a horizontal half section of a modification of my ejector system.
  • the invention will be described with reference to an automatic firearm the breech block of which is given a reciprocating movement to extract, after every shot has been fired, the empty case from the cartridge chamber of the arm, ejection proper being produced by the combined actions on said case of an extractor and of an ejector device.
  • the arm as a whole may be of any conventional design.
  • a barrel (not shown) is fixed to the end of a breech case 1 in which moves a breech block 2 adapted to keep, through its front edge, the cartridge in firing position when percussion is to take place.
  • the lower portion of the front edge of the breech block 2 carries an extractor 3 (Fig. 3) advantageously constituted by a pivotally mounted kind of hook which is partly retractable against the action of an elastic syst 2 Y t tem, said hook being yadapted to engage into ya circular groove 4a provided inthe rear part of every case 4.
  • -this lejector device includes two movable parts Ymounted like a'pair lof 'tongs lon Vbreech box l on either side of the path of travel of 4cartridge case 4 land located above the level of the axis of the barrel (supposed to be horizontal), these 'movable parts being Aadvantageously Vconstituted by 7two ejector levers 5 pivoted about pins 6 rigid with the top wall of .breech case l. yand perpendicular to said wall.
  • breech block 2 Preferably, only the active stroke of the ejector levers 5 is positively controlled by breech block 2 during its recoil movement, said levers being returned into retracted position, during the frontward return movement of said breech block, by elastic return means constituted, for instance, by two springs 7 inserted respectively between each side wall of breech box 1 and the rear branch of the corresponding ejector lever 5.
  • This positive control of the active stroke of each ejector lever 3 by breech block 2 may be obtained, in particular, either by causing an abutment rigid with said breech block to cooperate with an inclined surface of the lever to be controlled, or by providing the breech block with an inclined surface capable of cooperating, in camlike fashion, with an abutment carried by the lever.
  • case 4 will be preferably accelerated positively during the whole time the ends 5a of the ejector levers S cooperate, in wedge-like fashion, with the body of case 4.
  • This ejector system swings down the empty cartridge cases and drives them out inta way comparable to what takes place when a cherry stone is squeezed between the thumb and forefinger.
  • An important advantage of my invention is that the ejector system acts upon the cartridge case by gradually squeezing it, without risk of deteriorating said case in such manner as would interfere with the good operation of the arm (projection of metal scraps into the breech mechanism, variation of direction of the ejection thrust due to local deformations of the sleeve, etc.).
  • a cartridge case ejector device which comprises, in combination, two ejector levers pivoted intermediate the ends thereof to said breech case about axes perpendicular to the apertured wall, the axes being located symmetrically with respect to the plane of symmetry of said barrel perpendicular to the apertured wall and on either side thereof, said ejector levers having their front ends located in a plane spaced from the barrel axis on the side of the axis opposite to that side on which the apertured wall is located and at a distance therefrom smaller than the radius of the cartridge case, upwardly and inwardly inclined cam surfaces on the front ends of said ejector levers, and cooperating cam means carried by said breech-block and the parts of said ejector levers located rearward of the pivot axes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Buckles (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US257690A 1950-11-25 1951-11-23 Cartridge ejector Expired - Lifetime US2725655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU300986X 1950-11-25

Publications (1)

Publication Number Publication Date
US2725655A true US2725655A (en) 1955-12-06

Family

ID=19732509

Family Applications (1)

Application Number Title Priority Date Filing Date
US257690A Expired - Lifetime US2725655A (en) 1950-11-25 1951-11-23 Cartridge ejector

Country Status (8)

Country Link
US (1) US2725655A (xx)
BE (1) BE507174A (xx)
CH (1) CH300986A (xx)
DE (1) DE877719C (xx)
FR (1) FR1050459A (xx)
GB (1) GB691584A (xx)
LU (1) LU30429A1 (xx)
NL (2) NL157862B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894346A (en) * 1956-04-05 1959-07-14 Walter H B Smith Firing mechanism with a single spring for the hammer, hammer catch means and trigger
US2923205A (en) * 1955-10-08 1960-02-02 Bardelli Arturo Automatic arms
US3040705A (en) * 1960-05-02 1962-06-26 Thomas R Schlitz Bird feeder
US3090148A (en) * 1956-04-05 1963-05-21 Walter H B Smith Bolt action firearm with charger
US20050235543A1 (en) * 2002-04-09 2005-10-27 Johannes Murello Cartridge ejection mechanisms and methods for operating the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH665711A5 (en) * 1985-02-25 1988-05-31 Oerlikon Buehrle Ag Ejector for firearm cartridges - has lever which engages groove in breech and abuts against cartridge
DE4135273C2 (de) * 1991-10-25 1995-09-28 Rheinmetall Ind Gmbh Ansetzerkopf mit integriertem Auszieher für Munition
FR2955508B1 (fr) 2010-01-25 2012-03-30 Corning Inc Microreacteurs avec dispositif microfluidique plan et systeme d'application d'ultrasons ; mise en oeuvre de reactions chimiques en leur sein
US10677548B2 (en) * 2017-06-02 2020-06-09 Gibbens Engineering Group, LLC Lower receiver

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1146536A (en) * 1915-02-24 1915-07-13 Marlin Firearms Co Repeating firearm.
US1208892A (en) * 1912-09-27 1916-12-19 Remington Arms & Ammunition Company Extractor and ejector mechanism for firearms.
US1702063A (en) * 1925-02-09 1929-02-12 Swebilius Carl Gustaf Repeating firearm
US1786207A (en) * 1927-12-12 1930-12-23 Automatic Guns Inc Machine gun
GB385504A (en) * 1930-12-23 1932-12-29 Ferencz Gebauer Means for ejecting cartridges or cartridge cases from magazine fire-arms, having rectilinear breech block movement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1208892A (en) * 1912-09-27 1916-12-19 Remington Arms & Ammunition Company Extractor and ejector mechanism for firearms.
US1146536A (en) * 1915-02-24 1915-07-13 Marlin Firearms Co Repeating firearm.
US1702063A (en) * 1925-02-09 1929-02-12 Swebilius Carl Gustaf Repeating firearm
US1786207A (en) * 1927-12-12 1930-12-23 Automatic Guns Inc Machine gun
GB385504A (en) * 1930-12-23 1932-12-29 Ferencz Gebauer Means for ejecting cartridges or cartridge cases from magazine fire-arms, having rectilinear breech block movement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923205A (en) * 1955-10-08 1960-02-02 Bardelli Arturo Automatic arms
US2894346A (en) * 1956-04-05 1959-07-14 Walter H B Smith Firing mechanism with a single spring for the hammer, hammer catch means and trigger
US3090148A (en) * 1956-04-05 1963-05-21 Walter H B Smith Bolt action firearm with charger
US3040705A (en) * 1960-05-02 1962-06-26 Thomas R Schlitz Bird feeder
US20050235543A1 (en) * 2002-04-09 2005-10-27 Johannes Murello Cartridge ejection mechanisms and methods for operating the same

Also Published As

Publication number Publication date
LU30429A1 (xx)
DE877719C (de) 1953-05-26
GB691584A (en) 1953-05-13
CH300986A (fr) 1954-08-31
NL157862B (nl)
BE507174A (xx)
NL81685C (xx)
FR1050459A (fr) 1954-01-07

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