US2202232A - Cocking mechanism for automatic firearms - Google Patents

Cocking mechanism for automatic firearms Download PDF

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Publication number
US2202232A
US2202232A US219080A US21908038A US2202232A US 2202232 A US2202232 A US 2202232A US 219080 A US219080 A US 219080A US 21908038 A US21908038 A US 21908038A US 2202232 A US2202232 A US 2202232A
Authority
US
United States
Prior art keywords
chain
sprocket wheel
housing
cocking
crank
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
US219080A
Other languages
English (en)
Inventor
Rossmanith Wolfgang
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 AG
Original Assignee
Rheinmetall Borsig 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 Rheinmetall Borsig AG filed Critical Rheinmetall Borsig AG
Application granted granted Critical
Publication of US2202232A publication Critical patent/US2202232A/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
    • F41A7/00—Auxiliary mechanisms for bringing the breech-block or bolt or the barrel to the starting position before automatic firing; Drives for externally-powered guns; Remote-controlled gun chargers
    • F41A7/02—Machine gun rechargers, e.g. manually operated

Definitions

  • the invention relates to a cooking device for automatic rearms comprising a chain and sprocket Wheel. It differs from known forms of construction of apparatus of this kind having an endless chain in that there is used an open ended chain which is guided in grooves in the gun body. Thus the result is obtained that only a single sprocket Wheel is required and the cooking device is simpler in construction, While its overall length is less.
  • the cooking device may be easily accessible, it is advisable for it to be mounted in a removable part of the gun body or housing.
  • Fig. 1 shows a view on the inner side of a removable part of a gun body or housing carrying the cooking device.
  • Fig. 2 shows a horizontal longitudinal section.
  • Fig. 3 a cross-section through the part of the gun receiving the cocking device.
  • Fig. 4 is a cross sectional view through the spindle and projection taken on line IV-IV of Fig. 2.
  • a removable frame or Wall portion 2 in which the open ended chain 3 and the sprocket wheel 4 are mounted.
  • the chain is adapted to move in guide grooves 2a and 2b in the frame or Wall portion 2.
  • the chain carries at one end a nose 5 Which engages with the breech block through a longitudinal groove la in the housing wall I.
  • a cocking crank 6 which is coupled by a projection 6a having a square or other prismatic cross section which engages with a spindle 4a of the sprocket wheel 4 in a recess of corresponding cross section.
  • the pin or trunnion 2c has an external screw thread and the hub 6b of the crank 6 a corresponding female thread.
  • the pitch of the thread is such that it is greater than the height of an abutment 2d against which 5 ⁇ the cocking crank 6 bears when in the position of rest.
  • the cocking crank 6 turns on the threaded pin or trunnion 2c, the pitch of the thread carrying it beyond the abutment 2d, Without 10 striking the latter. Only when the cooking device is completely withdrawn into the position of rest does the crank 6 again strike against the abutment 2d, the end of the necessary return movement thereby being indicated.
  • a hand operated cocking device for automatic firearms having a breech mechanism housing, comprising a single sprocket wheel, and an open-ended chain engaged by the sprocket Wheel, the ends of said chain being guided in corresponding grooves provided in the breech housing, and means at one end of the chain adapted for engagement with a portion of the breech mechanism for cocking the same.
  • a hand operated cocking device for automatic iirearms having a breech mechanism housing, comprising a single sprocket wheel, and an open-ended chain engaged by the sprocket Wheel, the ends of said chain being guided in corresponding grooves provided in the breech housing, and means at one end of the chain adapted for engagement with a portion of the breech mechanism for cooking the same, said housing having a detachable frame in which said chain-grooves are provided and said sprocket Wheel is mounted to turn.
  • a hand operated cooking device for automatic firearms having a breech mechanism housing, comprising a single sprocket Wheel, and an open-ended chain engaged by the sprocket Wheel, the ends of said chain being guided in correspending grooves provided in the breech housing, and means at one end of the chain adapted for engagement with a portion of the breech mechanism for cooking the same, said housing having a detachable frame in which said chain-grooves are provided and said sprocket wheel is mounted to turn, and said cooking means consisting of a stud projecting through a longitudinal slot in the side of said frame.
  • a hand operated cocking device for automatic iirearms having a breech mechanism housing, comprising a single sprocket Wheel, an openended chain engaged by the sprocket wheel, the
  • a hand operated cocking device for automatic firearms having a breech mechanism housing, comprising a single sprocket Wheel; an openended chain engaged by the sprocket WheeL,l the ends of said chain being guided in corresponding groovesprovided in the breech housing, means at one end ofthe chain adapted for engagement with a portion of the breech mechanism for cocking the same, said housing having a detachable frame in-Which said chain-grooves are provided and said sprocket wheel is mounted to turn, an externally threaded hollow trunnion, a spindle on saidsprocket Wheely engaging for turning in the ⁇ hollow trunniona lflat-sided axial recess at the :end of said spindle, a crank handle having a hub threaded to turn on the trunnion, and an inward and axial projection on said hub engaging in said.'1"1atsid'ed recess, permitting turning
  • a hand operated cocking device for automatic rearms having a breechvmechanism housing, comprising a single sprocketwheeL an openended chain engaged by sprocket Wheel, the ends of said .chain being guided in corresponding ygrooves provided in thev breech housing, means at one end of the chain adapted for engagement with a portion of the breechmechanism for cocking the same, said housing having a detachable frame in which said chain-grooves are provided and said sprocket wheel is mounted to turn, an externally threaded hollow trunnion, a spindle on said sprocket'wheel engaging for turning in the hollow trunnion, a lflat-sided axial recess at the "end of said spindle, -a cranklriandlev having a hub ythreaded to turn onthe trunnion, an in- Ward and axial projection on said hub engaging in said flat-sided recess
  • a handoperated cocking device for automatic rearms having a breech mechanism housing, comprising a single sprocket Wheel, an openended "chain engaged by a sprocket Wheel, the ends of said chain being guided in corresponding grooves provided in the breech housing, means at one end of the chain adapted for engagement Witha portion ofthe breech mechanism for cocking the same, said housing having a detachable frame in which said chain-grooves are provided and said sprocket Wheel is mounted to turn, an externally threaded hollow trunnion, a spindle on said sprocket Wheel engaging for turning in the hollow trunnion, a flat-sided axialr recess at the end of said spindle, a crank handle having a hub threaded to turn on the trunnion, an inward and axial projection on said hub engaging in said flat-sided recess, permitting turning and axial displacement of the crank handle relative to said trunni

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Gears, Cams (AREA)
US219080A 1937-07-16 1938-07-13 Cocking mechanism for automatic firearms Expired - Lifetime US2202232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE204891X 1937-07-16

Publications (1)

Publication Number Publication Date
US2202232A true US2202232A (en) 1940-05-28

Family

ID=5784256

Family Applications (1)

Application Number Title Priority Date Filing Date
US219080A Expired - Lifetime US2202232A (en) 1937-07-16 1938-07-13 Cocking mechanism for automatic firearms

Country Status (3)

Country Link
US (1) US2202232A (de)
CH (1) CH204891A (de)
GB (1) GB501895A (de)

Cited By (2)

* 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
US20150276337A1 (en) * 2014-03-24 2015-10-01 The United States Of America As Represented By The Secretary Of The Navy System and method for charging a weapon

Cited By (3)

* 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
US20150276337A1 (en) * 2014-03-24 2015-10-01 The United States Of America As Represented By The Secretary Of The Navy System and method for charging a weapon
US9188400B2 (en) * 2014-03-24 2015-11-17 The United States Of America As Represented By The Secretary Of The Navy System and method for charging a weapon

Also Published As

Publication number Publication date
CH204891A (de) 1939-05-31
GB501895A (en) 1939-03-07

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