GB139541A - Improvements in automatic firearms - Google Patents

Improvements in automatic firearms

Info

Publication number
GB139541A
GB139541A GB2046518A GB2046518A GB139541A GB 139541 A GB139541 A GB 139541A GB 2046518 A GB2046518 A GB 2046518A GB 2046518 A GB2046518 A GB 2046518A GB 139541 A GB139541 A GB 139541A
Authority
GB
United Kingdom
Prior art keywords
breech
barrel
spring
piston
valve
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
Application number
GB2046518A
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
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2046518A priority Critical patent/GB139541A/en
Publication of GB139541A publication Critical patent/GB139541A/en
Priority to FR513687D priority patent/FR513687A/en
Expired legal-status Critical Current

Links

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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/32—Energy accumulator systems, i.e. systems for opening the breech-block by energy accumulated during barrel or gas piston recoil
    • F41A5/36—Energy accumulator systems, i.e. systems for opening the breech-block by energy accumulated during barrel or gas piston recoil with fluid accumulators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

139,541. Fairfax, H. W. M. Gabbett-. Dec. 10, 1918. Machine guns. - Consists in the combination with a recoiling barrel, which actuates a piston to compress air in a cylinder on recoil, of means for tapping the compressed air at any desired point in the recoil to open the breech; the breech closing and barrel return being effected either by springs or by compressed air. In the form illustrated, the barrel A is connected to a piston E working in a fixed cylinder H communicating through a non-return valve L with a telescopic tube M in which an air reservoir may be fitted. The tube M communicates through a slide-valve N with a cylinder 0 in which works a piston P urged forward by a spring P<1> and adapted to operate the breech mechanism, which is of the type described in Specification 138,135. In the position shown, the forward end of the actioncylinder 0 is open to the atmosphere via O<1>, N<3>, and N<1>. On recoil of the barrel, an arm V on a slidable rod T controlling the valve N strikes a fixed tread-down spring stop W, and displaces the valve relatively to the barrel to admit compressed air from the tube M to the cylinder, whereby the piston P is forced rearwardly, compressing spring P' and opening the breech. The barrel is returned by the spring Z<1> compressed during recoil. The piston P after opening the breech strikes an arm U on the rod T and displaces the valve N to exhaust, whereupon the spring P<1> returns the piston and closes the breech. A modification is described in which the spring P is dispensed with, a valve system being provided to admit compressed air to either end of the cylinder P to perform both the opening and the closing movements of the breech mechanism. It is further stated that by a suitable extension of the valve system, the barrel-return spring Z' may be dispensed with, and the return be effected by compressed air; the same result may be obtained by increasing the size of the cylinder O, and providing a stop to limit the rearward travel of the breech mechanism.
GB2046518A 1918-12-10 1918-12-10 Improvements in automatic firearms Expired GB139541A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2046518A GB139541A (en) 1918-12-10 1918-12-10 Improvements in automatic firearms
FR513687D FR513687A (en) 1918-12-10 1920-04-13 Automatic Firearms Improvements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2046518A GB139541A (en) 1918-12-10 1918-12-10 Improvements in automatic firearms

Publications (1)

Publication Number Publication Date
GB139541A true GB139541A (en) 1920-03-11

Family

ID=10146375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2046518A Expired GB139541A (en) 1918-12-10 1918-12-10 Improvements in automatic firearms

Country Status (2)

Country Link
FR (1) FR513687A (en)
GB (1) GB139541A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712869A1 (en) * 2005-04-12 2006-10-18 Simon Trendall An improvement to high pressure hydraulic breech mechanisms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712869A1 (en) * 2005-04-12 2006-10-18 Simon Trendall An improvement to high pressure hydraulic breech mechanisms

Also Published As

Publication number Publication date
FR513687A (en) 1921-02-21

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