US1809222A - Automatic firearm having alpha recoiling barrel and an amplifying push lever - Google Patents

Automatic firearm having alpha recoiling barrel and an amplifying push lever Download PDF

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Publication number
US1809222A
US1809222A US256679A US25667928A US1809222A US 1809222 A US1809222 A US 1809222A US 256679 A US256679 A US 256679A US 25667928 A US25667928 A US 25667928A US 1809222 A US1809222 A US 1809222A
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US
United States
Prior art keywords
bolt
lever
belt
barrel
cartridges
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
US256679A
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English (en)
Inventor
Soncini Cesare
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.)
COSTRUZIONI MECCANICHE BREDA E
Original Assignee
COSTRUZIONI MECCANICHE BREDA E
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 COSTRUZIONI MECCANICHE BREDA E filed Critical COSTRUZIONI MECCANICHE BREDA E
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Publication of US1809222A publication Critical patent/US1809222A/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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/29—Feeding of belted ammunition
    • F41A9/32—Reciprocating-slide-type belt transporters
    • F41A9/33—Reciprocating-slide-type belt transporters with cartridge stripping means
    • 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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/03—Shot-velocity control
    • 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
    • F41A3/36—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing
    • F41A3/44—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having sliding locking elements, e.g. balls, rollers
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/29—Feeding of belted ammunition
    • F41A9/32—Reciprocating-slide-type belt transporters

Definitions

  • weapons have lnot the form which. is best adapted to insure/that degree of reliability and simplicity which is desirable.
  • the improved weapon characterized in that the accelerator lever and the bolt are formed and arranged so that the one operates upon the other without the intermediary of,
  • the aforesaid lever drives and controls the i movements of the breech and the bolt directly and all the other operating parts indirectly.
  • the weapon is further characterized by the construction and arrangement of the various' parts which have been adopted with a view to obtainin the'above-mentioned desirable characteristics, as well as by certain s eciiic inherent and .functional qualities .o each part. n
  • va rious parts ofthe lweapon are #shown drawn 5 to various scales, but in all the gures the same reference numerals relate to the same parts.
  • Figure 1 is a longitudinal section of the weapon
  • Fig. 2 is a cross-sectionthrough the bolt Figs. 3 and 4 show in section and in plan, respectively, the means for feeding the belt; ⁇ Figs. 5 and 6 show two positions, engaged and disengaged, of the locking member for the bolt;
  • Figs. ⁇ 7 and 8 are perspective views of the said locking member and the guide plate vwith which it cooperates;
  • Figs. 9, 10 and 11 show, respectively, the accelerator lever in two diierent positions in section, and in perspective;
  • Fig. 12 represents the trigger mechanism 0 Figs. 13 and ylli'show, in perspective ⁇ an in section, the. means for taking cartridges from the belt and transferring them to the.v
  • 1 indicates the breech casing
  • 2 the barrel
  • 3 the feed conduit
  • 4 a cover for the casing.
  • 5 is a lever for Inovand 8 the breech en or extension of the barrel.
  • 9 is a vertically-reciprocating member for transferring the cartridges.
  • 1() is a cam groove formed in the casing to control transfer member 9, 11 is the'ring pin, 12 the main recoil spring, and 13 a damping spring. 14
  • ' 16- is a device for regulatin the tension of spring 12, 23 (Fig. 13) a double claw or grip' per, which holds the vcartridges during their and 15 is a carriage attached to extension,
  • the accelerator lever 14 shown in detail' in Figs. 9,10 and 11, is given aA form which renders it particularly adapted to fulfill the purpose for which it is required. It comprises two angularly-arranged arms, as will be readily seen from the drawings, the upper arm being slightly bent and its end making contact above with a flat 37 formed on the bolt.
  • the lowler'arm of the lever carries at its end a roller 36 which rolls, during the rotary movement of the lever, on the arc formed by the surfaces of the two spaced parts 39 of the carriage, and it remains constantly in contact therewith.
  • Fig. 9 shows the position of the accelerator lever when the mechanism is in closed position. In this position, the carriage 15 moves with the extension 8, while the accelerator lever is pivoting about pivot rigid with the breech casing.
  • the closing means for th'e weapon is of a form adapted to cooperate'with the abovedescribed arrangements, and its characteristics are such as to ermit the feeding of the weapon by means o a. belt from above the i manner yet to be described.
  • the closing aircraft is of a form adapted to cooperate'with the abovedescribed arrangements, and its characteristics are such as to ermit the feeding of the weapon by means o a. belt from above the i manner yet to be described.
  • cartridges to be kept free which is of great importance in the case o weapons used on -e closing arran ement essentially comprises a locklng mem r 17 having a laterally-projecting rhomboidal extension or stud 34which engages in a slot or groove formed in the closure it (Figs. 5-8).
  • the trigger mechanism is contained within a casing or receptacle 19 external of the weapon, as shown 1n Fig. 2 and in Fi 12. It comprises the previously-mentioned iam ⁇ mer 27, which is cockedb the bolt during its recoiling movement adyis held cocked by the detent 28. In the position shown, the hammer is engaged by said detent.
  • sync ronizing pawl 31 is rovlde which, with its tooth 45, forms a evice controlling the operation of the hammer so that the actuation of the latter is only possible when the synchronizing pawl is displaced by the motor through a spmclle 44 (Fig. 2) suiciently to free the hammer.
  • This movement of the synchronizing pawl may be dictated by means of any of the arrangements already known 1n connection with weapons of a like kind.
  • the ower of the recoil spring 13 may be varied by means of the regulatingscrew 16 (Fig. 1) which is rotatable within the extension 21 of the breech casing, and the power of the spring is determined according to the positionof the screw.
  • This adjustment'device is of particular utility in the case of machine guns employed on aircraft.
  • the devices used in the. present 'weapon are designed for use with bolt-loaders and, consequently, they are adapted to carry out the usual ⁇ three required steps with the cartridges is effected by the mechanism whichv also controls the movement of the belt.
  • the transfer of cartridges from the belt to the firing chamber is effected in thev following manner:
  • the cartridges are fed by a belt (not shown) of fabric or metal which may be flexible or not and which passes the cartridges into a position where the jaws of the gripper 23 engage over the rim of the cartridge as the bolt 7 moves forward.
  • the bolt moves rearward (to the left in Fig. l) and the cartridge, which is then engaged by the gripper, as just stated, is thus v withdrawn from the belt.
  • the boss o r t ⁇ ooth 25 owingtothe shape given the cam groove 10 with which it is engaged, causes the transfer member 9 to move downward, thereby pushing the car- 1 tridge downward from between the jaws of gripper 23 into,a position in which its ⁇ rim engages between guides 33 on the bolt and rests against the end of the pivoted holding member 26.
  • this position -is reached the rearwardmovement of the bolt is completed and its return movement commences, during which time the cartridge is pushed into the firing chamber.
  • the weapon also possesses certain important distinguishing characteristics in connec tibn with the feed of the belt.
  • the operation is effected by means of a simple lever M pivoted at any convenient point upon the breech casing and operating upon a part of the feeding carriage of the belt, the other end of thefleverbeingguided by a cam provided on thebolt.
  • the breech end or extension 8 of the barrel and the breech casing 1 have been given a cylindrical form to facilitate accurate and easy manufacture; but this, while being of great importance from the point of view of production and operation, has the effect of increasing the distance of the feed lever 5 from the bolt and, in consequence, its pivot 40v becomes of such excessive length as to affect the operation disadvantageously.
  • a device is provided in which the lever 5 is associated with a'wing 6 which is capable of oscillating about a long pivot 41 iXed i-n the breech casing, under the control of a tooth ⁇ 42, which engages in a cam groove (not shown) formed in the bolt. This oscillating wing 6 transmits movements to lever 5 without ⁇ strain.
  • a locking device arranged at one side and at the head of the bolt where K it cannot impede the feed of the cartridges from above, and their ejection from below;
  • the trigger device comprises not only a safety detent operating according as the weapon is closed, but also a synchronizing detent operating in accordance with the movement of an outside motor that, for example, drives the I'.
  • propeller of an aircraft ( What I claim is: 1. In a machine gun, a breech casing; a recoiling barrel; a sliding bolt having a fiat on its under face; a carriage fixed to the breech end of the barrel; vand an accelerator lever embodying two angularly-arranged arms mounted at the apex of the angle to rock about a pivot fixed to said casing, one arm projecting upwardlyv intol thepath of the carriage for coaction therewith and with said flat, and the otherarm projecting toward said carriage and having a constant sliding engagement with the same.
  • a machine gun according to claim 3,-in which the carriage is provided with an abutment adapted to strike against the upwardly projecting arm of the accelerator lever between the pivot of the lever and the free end of said arm.
  • a trigger mechanism for machine guns comprising a trigger lever provided with a circular recess; a hammer cocked by the bolt of the gun; a spring-actuated plunger for operating the hammer; and a pivoted detent for holding the hammer in cocked position having one end constantly engaged in said recess and the other end releasably engaged with the hammer, said trigger lever being rocked by the closing movement of the bolt and thereby rocking the detent about its pivot so as to disengage the hammer.
  • a trigger mechanism for aircraft machine guns comprising a trigger lever provided with a recess; a hammer cocked by the recoil movement of the bolt of the gun; a
  • a pivoted detent for holding the hammer in cocked position havin one end engaged in said recess and the other end engaged with the hammer, said triggerlever being rocked by the closing movement of the bolt and thereby rocking the detent about its pivot so as to disengage the hammer; a spindle to be driven from the motor of the aircraft; and a synchronizing detent on said spindle for controlling the operation of the hammer in phase with the rotation of the propeller of the aircraft.
  • a machine gun of the belt-feed type a breech casing; a recoiling barrel; a sliding bolt; a grip er for removing the cartridges from the belt during recoil provided with a pair of claws for engaging the cartridges on both sides; a reciprocating block for transferring the cartridges from the ripper into position to be moved into the ring chamber by the bolt, and a springoperated lever mounted on the side of the bolt to hold the cartridges in position preparatory to their entry into the firing chamier.
  • a recoiling barrel a sliding bolt; and an accelerator device comprising two relatively-moving parts, one'embodying a member having a shaped surface and connected to the breech end of the barrel, and the other embodying a two-armed lever mounted to rock about a fixed pivot, one
  • An automatic Y firearm additionally provided with a locking member arranged at the head and to one side .of the bolt and connected to the same, a closure plate provided with a guide slot, and a stud on the locking membe'r slidably engaged in slot and whereby said member is contro e 10.
  • a locking member arranged at the head and to one side .of the bolt and connected to the same, a closure plate provided with a guide slot, and a stud on the locking membe'r slidably engaged in slot and whereby said member is contro e 10.
  • breech casing a recoiling barrel; a sliding bolt having a cam groove in lts upper face; a
  • rocking', pivotally-mounted feed lever for moving the belt step by step and operated indirectly by the bolt during its reciprocating movement; and a transmission connection between the bolt and the feed lever for effecting such indirect operation of said lever;
  • such connection embodying an oscillating wing, and a vertical pivot on the breech casing and about which the wing swings, said wing having a recess to receive the pivot of the feed lever and also having a pin that prol jects into the cam groove in the bolt.
  • a breech casing a' recoiling barrel; a sliding bolt; a gripper carried by the bolt for removing the cartridges from the belt during recoil, said -gripper'being arranged in a plane parallel with the axis of the bolt and having claws at its ends for engaging the cartridges or. both sides; a reciprocating block for transferring the cartridges from the gripper into position to be moved into the firing chamber by the bolt; and a screen-operated lever mounted in the side of the bolt to hold the cartridges in position preparatory to their entry into the firing chamber.
  • a breech casing provided with a cam: a recoiling barrel; a sliding bolt; a gripper carried by the bolt for removing the cartridges from the belt during recoil; a reciprocating block for transferring the cartridges from the gripper into a position to be moved into the firing chamber by the bolt, said block sldable in rectilinear grooves formed' in the bolt in a direction normal to its axis; and a tooth on the block engaged withthe cam on the breech casing to control the movements of the block.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Cosmetics (AREA)
US256679A 1927-03-05 1928-02-24 Automatic firearm having alpha recoiling barrel and an amplifying push lever Expired - Lifetime US1809222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT305595T 1927-03-05

Publications (1)

Publication Number Publication Date
US1809222A true US1809222A (en) 1931-06-09

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US256679A Expired - Lifetime US1809222A (en) 1927-03-05 1928-02-24 Automatic firearm having alpha recoiling barrel and an amplifying push lever

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US (1) US1809222A (en))
BE (1) BE349065A (en))
CH (1) CH132352A (en))
DE (2) DE554289C (en))
FR (1) FR653726A (en))
GB (3) GB305596A (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454251A (en) * 1946-01-11 1948-11-16 Hamilton Wallace Cartridge feeding mechanism for automatic guns
US2500139A (en) * 1946-09-11 1950-03-07 Carl G Swebilius Ejector detent
US2520971A (en) * 1946-01-03 1950-09-05 Clarence E Simpson Recoil mechanism
US2635377A (en) * 1946-11-02 1953-04-21 Vickers Armstrongs Ltd Cartridge case ejector for reciprocating breech block type of guns

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110478794A (zh) * 2019-08-15 2019-11-22 吴自红 一种消防用的电动撑顶器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520971A (en) * 1946-01-03 1950-09-05 Clarence E Simpson Recoil mechanism
US2454251A (en) * 1946-01-11 1948-11-16 Hamilton Wallace Cartridge feeding mechanism for automatic guns
US2500139A (en) * 1946-09-11 1950-03-07 Carl G Swebilius Ejector detent
US2635377A (en) * 1946-11-02 1953-04-21 Vickers Armstrongs Ltd Cartridge case ejector for reciprocating breech block type of guns

Also Published As

Publication number Publication date
DE550900C (de) 1932-05-25
GB305595A (en)) 1929-04-25
GB305596A (en) 1929-05-02
DE554289C (de) 1932-07-09
GB286598A (en) 1929-03-07
CH132352A (fr) 1929-04-15
FR653726A (fr) 1929-03-26
BE349065A (en))

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