US1637400A - Automatic arm - Google Patents

Automatic arm Download PDF

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Publication number
US1637400A
US1637400A US60661A US6066125A US1637400A US 1637400 A US1637400 A US 1637400A US 60661 A US60661 A US 60661A US 6066125 A US6066125 A US 6066125A US 1637400 A US1637400 A US 1637400A
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United States
Prior art keywords
bolt
slide
barrel
arm
movement
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
US60661A
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English (en)
Inventor
Kiraly Paul Von
Lovasz Josef
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Individual
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Individual
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Filing date
Publication date
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Publication of US1637400A publication Critical patent/US1637400A/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
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
    • F41A3/32—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the bolt being rocked about a notional axis transverse to the barrel axis
    • 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
    • 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
    • F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
    • F41A3/16—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
    • F41A3/26—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable 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
    • 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
    • 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
    • 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
    • F41A5/14—Barrel stops, i.e. devices for holding the recoiling barrel in a predetermined position, e.g. the recoil position

Definitions

  • Our invention relates to automatic arms, having a barrel arranged for short recoil. which recoil movement is transmitted to the breech bolt and involves an improved transmission of the recoil momentum of the barrel to the breech bolt, then an increased delay in the opening of the bolt and means for dislodging the spent shell by means of a front blow.
  • Fig. '6 shows the working surfaces of the slide.
  • Fig. 8 shows the working surfaces of the slide with slowly increasing elevation.
  • the corresponding surfaces of the bolt 5 are drawn with dotted lines.
  • Fig. 9 shows our invention as applied to a block bolt and with an unlocking lever.
  • Fig. 10 shows the same mechanism, but
  • the mechanism consists of a barrel 1 to which a recoil movement of about /g- /g inch, in the case, is allowed.
  • the spring 4 holds the barrel 1 in its foremost position and returns it thereto after each recoil movement.
  • the positively locked breech bolt, whlch is of the straight pull type, consists, as usual, of two main parts, the bolt 5 which supports the bottom of the shell and a slide 7 which operates the bolt.
  • the bolt is shown in Figs. 1-S as a turning boltbut any other bolt system (block or looking lever bolt etc.), can be chosen.
  • bolt 5 It can, as a matter of course, be placed on any other side of it, or in it, or around it.
  • This slide 7 carries working surfaces, of which'the one opens the bolt, the other closes it.
  • the opening surface 9 is shaped as a long drawn curve, rising at first, but slightly, and farther on more rapidly. (See Fig. 8). Thus, in the first phase of the backward movement of the slide 7 but a small fraction of the unlocking movement of the bolt is performed, the balance of it being done by the farther, more steeply inclined part of the surface 9.
  • the elevation of the foremost part of the opening surface 9 of the slide 7 can be reduced to zero, so that in that case the opening surface 9 consists of a straight part and of a curved one (Fig. 6). It then allows to the slide 7 a free movement, within which it does not engage or influence the bolt 5.
  • the two main parts of the bolt can be made to engage one another by means of grooves and threads, or of lugs, 01 of an arm,
  • the slide 7 is supported by a closing spring 12 by which the forward movement of the breech bolt is effected.
  • the firing mechanism can be freely chosen and constructed.
  • a main lever (26, 30) is inserted (Figs. 1, 2, '3, 4 and 7).
  • This main lever can equally well be situated either on the barrel, or on the case, or on the slide, or on the bolt. It causes the barrel to transmit to the slide 7 the greatest part of its recoil momentum.
  • the main lever 26, 30 is so formed and so arranged that it accompanies the recoiling barrel in the first phase of its movement without working,- so that its accelerating effect upon the slide only makes itself felt in the last phase of the recoil movement of the barrel 1.
  • the projection 29 of the case 2 gas which engages the short arm 28 of the main lever is placed some distance ahead of this short arm, so that this arm only can hit it in the last stage of the backward travel of the barrel.
  • the main lever only can accelerme curved and so formed that the farthest end breech bolt.
  • Figs. 9 and 10 show our invention adapted for a bolt of the block system.
  • an unlocking lever B is'situated in the block bolt 5 and the slide 7 is provided at its rear end with a surface 8, by which the closing and locking of the bolt 5 is effected, and with a simple lug 12 placed at a certain distance from the lower arm of the unlocking lever R in order to insert a free movement between the two main parts of the
  • dotted mes The relative situation of the parts of the breech bolt at the end of the iltmlocking movement is shown by dotted mes.
  • the locking and unlocking of the bolt 5 is done by means of an arm of the slide 7 which projects into a recess T of the bolt 5. This arm of the recoiling slide strikes against the surface 12 of.the recess T, forcing the bolt 5 downwards and so unlocking the latter from the case 2.
  • the length of the free movement of the main parts of the breech bolt is controlled by the length of the recess T.
  • the surface 9 of the slide gets engaged with the corresponding surface of the bolt and only now, long after the barrel has absolved its recoil movement and after the main lever 26, 30 has displayed its accelerating effect, does the slide 7 open and rei'ect the bolt 5.
  • the bolt 5 being uncontro led by any closing spring, recoils freely and extracts and ejects the empty shell.
  • the catch 15 can serve as interrupt0r also,
  • the catch 15 can well be emplo ed to support by its forearm 16 and slide 7 in its foremost position.
  • the catch 15 can be made use of as a safety device which prevents premature firing of the arm,' because it only releases the link 23 of the sear, in its uppermost position that is, when the bolt is completely closed.
  • An automatic fire arm as claimed -in claim 1 in which the operating surface of the slide by which it effects the opening of the bolt ends in a recess by which the'un-.
  • An automatic fire arm as claimed in claim 1, in which the slide has a closing surface, inclining at an angle which is greater than the angle of the opening surface.
  • An automatic fire arm as claimed in claim 1, including a catch, pivoted in the case when in its rearmost position and retains it until the recoiling bolt presses the catch out of engagement with the slide.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
US60661A 1924-10-06 1925-10-05 Automatic arm Expired - Lifetime US1637400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE121840X 1924-10-06

Publications (1)

Publication Number Publication Date
US1637400A true US1637400A (en) 1927-08-02

Family

ID=5657090

Family Applications (1)

Application Number Title Priority Date Filing Date
US60661A Expired - Lifetime US1637400A (en) 1924-10-06 1925-10-05 Automatic arm

Country Status (4)

Country Link
US (1) US1637400A (de)
CH (1) CH121840A (de)
FR (1) FR604125A (de)
GB (1) GB240880A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487621A (en) * 1945-11-09 1949-11-08 Colt S Mfg Company Breech mechanism for automatic firearms
US2512027A (en) * 1944-07-08 1950-06-20 Oerlikon Buehrle Ag Automatic firearm breech bolt lock
US10203172B2 (en) * 2015-12-10 2019-02-12 Glock Technology Gmbh Pistol with a rotary barrel
US10209019B2 (en) 2017-02-27 2019-02-19 Glock Technology Gmbh Pistol
US11022386B2 (en) 2019-08-15 2021-06-01 Smith & Wesson Inc. Firearm breech cover interlock
US11035636B2 (en) 2019-07-26 2021-06-15 Smith & Wesson Inc. Shotgun ammunition feeding system
US11306995B2 (en) 2019-08-06 2022-04-19 Smith & Wesson Inc. Shotgun configuration
US11326845B2 (en) 2019-08-13 2022-05-10 Smith & Wesson Inc. Firearm having reciprocable breech cover

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1005891A3 (fr) * 1992-06-03 1994-03-01 Herstal Dispositif pour le freinage de la glissiere d'une arme a feu.
GB0226660D0 (en) * 2002-11-15 2002-12-24 Bosher Gilbert F C Breech loaded gun

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512027A (en) * 1944-07-08 1950-06-20 Oerlikon Buehrle Ag Automatic firearm breech bolt lock
US2487621A (en) * 1945-11-09 1949-11-08 Colt S Mfg Company Breech mechanism for automatic firearms
US10203172B2 (en) * 2015-12-10 2019-02-12 Glock Technology Gmbh Pistol with a rotary barrel
US10209019B2 (en) 2017-02-27 2019-02-19 Glock Technology Gmbh Pistol
US11035636B2 (en) 2019-07-26 2021-06-15 Smith & Wesson Inc. Shotgun ammunition feeding system
US11306995B2 (en) 2019-08-06 2022-04-19 Smith & Wesson Inc. Shotgun configuration
US11326845B2 (en) 2019-08-13 2022-05-10 Smith & Wesson Inc. Firearm having reciprocable breech cover
US20220228825A1 (en) * 2019-08-13 2022-07-21 Smith & Wesson Inc. Firearm Having Reciprocable Breech Cover
US11703292B2 (en) * 2019-08-13 2023-07-18 Smith & Wesson Inc. Firearm having reciprocable breech cover
US11022386B2 (en) 2019-08-15 2021-06-01 Smith & Wesson Inc. Firearm breech cover interlock

Also Published As

Publication number Publication date
FR604125A (fr) 1926-04-29
GB240880A (en) 1927-01-06
CH121840A (de) 1927-08-16

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