US2072197A - Automatic firearm - Google Patents

Automatic firearm Download PDF

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Publication number
US2072197A
US2072197A US678685A US67868533A US2072197A US 2072197 A US2072197 A US 2072197A US 678685 A US678685 A US 678685A US 67868533 A US67868533 A US 67868533A US 2072197 A US2072197 A US 2072197A
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US
United States
Prior art keywords
breech
sleeve
block
casing
safety
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
US678685A
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English (en)
Inventor
Bergmann Theodor Emil
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
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Individual
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Filing date
Publication date
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Publication of US2072197A publication Critical patent/US2072197A/en
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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
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/68—Bolt stops, i.e. means for limiting bolt 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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/30—Multiple safeties, i.e. one safety element acting on at least one element of the firing mechanism and at least one other element of the gun, e.g. the moving barrel
    • F41A17/32—Multiple safeties, i.e. one safety element acting on at least one element of the firing mechanism and at least one other element of the gun, e.g. the moving barrel the other element being the breech-block or 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/72—Operating handles or levers; Mounting thereof in breech-blocks or bolts
    • 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

Definitions

  • the invention relates to an automatic firearm especially to aninertia type sun of the known Bergmann type. which firespistol ammunition and which may be fired from the shoulder as a machine carbine without the use of a tripod or other stand.
  • This machine gun has a breech block in which the firing pin is loosely mounted.
  • a main spring is provided, the rear end of which abuts against the bottom sleeve locked by means of locking-ribs to thebreech casing.
  • the main spring acts as a breech closure and a firing spring to propel simultaneously both the block and the pin.
  • the block and pin are moved forwardly together by a single spring, which simultaneously throws the block into the closing position and the firing pin into the firing position, as soon as the trigger lever, which holds the block in the loading position in front of the magazine opening, is released by the actuation of the trigger.
  • the breech block in order that it may be moved for the purpose of setting or cocking the weapon by hand, is provided with a handle or grip-lever, and the'casing is corre spondingly slotted at the side to give the necessary freedom of movement to the said lever when the blockmoves to and fro in the breech casing.
  • the object of the present invention is to provide an automaticfirearm in which the handle orgrip-lever remains fixed during firing and for this purpose is separate from or located outside the breech block at the rear end thereof, thus avoiding the dangers pointed out and making it possible to provide a casing without a slot or opening for the ieverby having the sides closed.
  • the automatic flrearm comprises a breech block adapted to lock the firearm by means of inertia, a firing or striking pin enclosed in said breech block, a main spring acting as a breech closure and firing spring to simultaneously propel both, (the said breech block and thefirlng pin), and tworotatable Bergmann, Botenfels (Murgtal).
  • No. 678,685 s2 when turned into one position, to engage the breech block by one of them, and .when turned into another position, to engage the breechcasing by the othersleeve.
  • one ofthe rotatable sleeves preferably the outer one, is
  • This sleeve, hymeans of suitably formed ribs, or the like, can be held locked to the casing for the normal (automatic) functioning of the I weapon, while the other sleeve, in particular cases as, for instance, when changing the maga zine, or in case of breakage, the block is to be moved or set by hand can be coupled to the block, in order that the sleeves and the block may bewithdrawn and when again pushed forward the weapon may be cockedby' means of the sleeves.
  • Fig. 2 is. a plan view thereof, showing the grip-part and the safety flange, c
  • Fig. 3 is a part vertical sectionalview 01mg. 1 in which the breech mechanism is set ready for firing and the safety flange turned in the safety position, the inner sleeve, being uncoupled from the breech block and the outer sleeve being locked to the casing,
  • Fig. 4 is a rear view of the Fig.3 showing the safety flange in its safety position
  • N Fig. 10 is a part horizontal, sectional view of the parts shown in Fig. 3,.
  • a Fig. 11 is a cross-section takenon line Xl-Xf "of Fig. 10, V
  • Fig. 12 is. a part vertical sectional view similar to Fig. 3 showing the breech mechanism with its parts after firing,
  • Fig. ,13 is a rear view ofFig.' 12', showing: the safety, flange inv the non-safety position,
  • Figs. Hand 15 are cross-sectional viewson the respective lines XIV-XIV, and XV-XV of Fig.
  • FIG. 16 is a part vertical sectional view showing the parts withdrawn in the backward position before they are pushed forward for cooking the weapon by hand, the inner sleeve being coupled with the breech block,
  • Fig. 17 is a rear view of'Fig. 16,
  • Fig. 18 is a cross-sectional view taken on line XVIIL-XVIII of Fig. 16, showing the position of the outer sleeve,-. Y
  • Figs. 19 to 22 Show the end bushingprme breech block in elevation (Fig. 19) and in three sections, two of these sections (Figs. 21 and 22).
  • the block-lever or handle a is placed'atthe being cross-sections taken on the respective lines outer end of the outer or end sleeve b, which is carried in the closed casing h and engages with the rear end of the breech-block c.
  • the sleeve b is capable of being turned by means of the handle or lever a so that the coupling lugs of the'inner sleeve d can enter'into' corresponding recesses in the breech blofckfif
  • the outer sleeve b by; means of lockirigribs, is adapted to be held locked to the casing h during firing.
  • the inner sleeve d by: means of lockirigribs, is adapted to be held locked to the casing h during firing.
  • the handle or lever a is secured on an overlapping extension b of the outer or bottom sleeve b which, during firing, is held locked to the casing h by the ribs q abutting against inner shoulders 11. of the casing and secured-in their locking position by a locking catch 0 in the form of a spring pressed pin (Figs. 5, l0 and 12)
  • This sleeve d carries a safety flange s on its end pin 11 which protrudes backwards beyond the outer sleeve b.
  • a machine'gun comprising, ,a breech casing with unslotted wall, an inertia closed breech block slidable therein, a firing pin in the breech block, a spring for effecting the closing movement of the breech block and also driving the firing pin, a non-recoiling and sleeve slidable manually in the casing, means carried by said sleeveoperative in its backward stroke to retract the breech block along with its aforesaid spring in uncooked condition to itsrearmost position, said sleeve in its forward stroke cooking the said spring.
  • a trigger pawl for holding the breech block when it is thus retracted, means for locking the end sleeveto the casing at the end of its forward stroke to hold the spring cocked, and a handle carried by said end sleeve externally of the casing.
  • a machine gun comprising, a breech casing with unslotted wall, an inertia closed breech block slidable therein, a firing pin in the breech block, a spring for effecting the,closing movement of the breech block and also driving the firing pin, a non-.recoiling end sleeve slidable manually in the casing, means carried by said operative sleeve in its backward stroke to retract the'bree'ch block along with its aforesaid spring in u'ncocked condition to its rea'rmost' position, said sleeve in its forward stroke cocking the said spring, a trigger pawl for holding the breech block when it isthus retracted, means for locking the end sleeve tothe casing at the end of its forward I stroke to hold the spring cocked, a handle carried by said end sleeve externally of the casing, and safety means associated with said end sleeve for holding
  • a machine gun in which the end sleeve has an inner sleeve rotatably mounted therein and said inner sleeve having 2. 'lug co-operating with a recess in the breech block for coupling the end. sleeve to the breech block for retracting the same, said inner sleeve also carrying the safety means.
  • a machine gun comprising a-breech casing with unslotted wall, an inertia closed breech block slidable therein, a firing pin in the breech block, a non-recoiling end sleeve slidable manually in the casing, an inner sleeve rotatablymounted in .the end sleeve and having a lug movable by such rotation to engaze the breech block to retract means for locking the end sleeve to the casing at the end of its forwardstroke to hold the spring cocked, and a handle carried by said end sleeve.
  • a machine gun comprising a breech casing with unslotted wall, an inertia closed breech block slidable therein, a firing pin in the breech block, a non-recoiling end sleeve slidable manually in the casing, an inner sleeve rotatably mounted in the end sleeve and having a lug movable by such rotation to engage the breech block to retract the same to its rearmost position in the backward stroke of the end sleeve without relative rotation between the inner sleeve and the breech block during said retraction, a spring for effecting the closing movement of the breech block and also driving the firing pin, said spring being arranged to be carried in uncooked condition by the breech block in its said backward stroke and to be cooked by the next forward stroke of the manually operable end sleeve, a trigger pawl for holding the breech block when it is thus retracted means for locking the end sleeve to the
  • a machine gun in which the safety means includes a lug on the inner sleeve which in the operative condition of the safety means engages an annular groove in the breech block to prevent its release by the trigger pawl.
  • a machine gun in which the end sleeve has shouldered guide cheeks cooperating with corresponding shouldered recesses in the rear end of the casing and enabling itto be withdrawn therefrom in oneposition of rotation relatively to said casing.
  • safety means comprising a lug on the inner sleeve cooperating with annular and longitudinal grooves in the breech block, and means for securing the inner sleeve selectively in two positions of rotation relatively to the end sleeve corresponding to safety and firing conditlons, said lug on the inner sleeve being turned into alignment with the longitudinal groove in the breech block when the safety means is set for firing condition,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US678685A 1932-07-06 1933-07-01 Automatic firearm Expired - Lifetime US2072197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2072197X 1932-07-06

Publications (1)

Publication Number Publication Date
US2072197A true US2072197A (en) 1937-03-02

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Application Number Title Priority Date Filing Date
US678685A Expired - Lifetime US2072197A (en) 1932-07-06 1933-07-01 Automatic firearm

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US (1) US2072197A (fr)
NL (2) NL49989C (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418094A (en) * 1943-04-26 1947-03-25 Gen Motors Corp Breech bolt latching mechanism
US2430680A (en) * 1944-09-04 1947-11-11 Marlin Firearms Co Breech bolt and retracting means therefor
US2437548A (en) * 1944-03-13 1948-03-09 Patchett George William Telescopic firearm
US2717464A (en) * 1951-05-21 1955-09-13 Gildo Marcati Breech block for firearms
US2751820A (en) * 1950-06-24 1956-06-26 Arthur J Pope Trigger and sear control mechanism
US2809564A (en) * 1950-06-24 1957-10-15 Arthur J Pope Gun construction
US20120137557A1 (en) * 2010-11-25 2012-06-07 Blaser Finanzholding Gmbh Bolt for a repeating firearm
US20190078849A1 (en) * 2017-09-11 2019-03-14 Q, Llc Removable bolt handle for bolt action firearms
USD854643S1 (en) 2017-11-07 2019-07-23 Q, Llc Firearm bolt handle
USD868196S1 (en) 2017-09-11 2019-11-26 Q, Llc Firearm bolt handle

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418094A (en) * 1943-04-26 1947-03-25 Gen Motors Corp Breech bolt latching mechanism
US2437548A (en) * 1944-03-13 1948-03-09 Patchett George William Telescopic firearm
US2430680A (en) * 1944-09-04 1947-11-11 Marlin Firearms Co Breech bolt and retracting means therefor
US2751820A (en) * 1950-06-24 1956-06-26 Arthur J Pope Trigger and sear control mechanism
US2809564A (en) * 1950-06-24 1957-10-15 Arthur J Pope Gun construction
US2717464A (en) * 1951-05-21 1955-09-13 Gildo Marcati Breech block for firearms
US20120137557A1 (en) * 2010-11-25 2012-06-07 Blaser Finanzholding Gmbh Bolt for a repeating firearm
US8533986B2 (en) * 2010-11-25 2013-09-17 Blaser Finanzholding Gmb Bolt for a repeating firearm
US20190078849A1 (en) * 2017-09-11 2019-03-14 Q, Llc Removable bolt handle for bolt action firearms
USD868196S1 (en) 2017-09-11 2019-11-26 Q, Llc Firearm bolt handle
US10514219B2 (en) * 2017-09-11 2019-12-24 Q, Llc Removable bolt handle for bolt action firearms
USD879905S1 (en) 2017-09-11 2020-03-31 Q, Llc Firearm bolt handle
USD854643S1 (en) 2017-11-07 2019-07-23 Q, Llc Firearm bolt handle

Also Published As

Publication number Publication date
NL49989C (fr)
NL47911C (fr)

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