GB139541A - Improvements in automatic firearms - Google Patents
Improvements in automatic firearmsInfo
- 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
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.
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)
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 |
-
1918
- 1918-12-10 GB GB2046518A patent/GB139541A/en not_active Expired
-
1920
- 1920-04-13 FR FR513687D patent/FR513687A/en not_active Expired
Cited By (1)
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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