US3333510A - Piston ring for automatic weapon with breech-unlocking piston - Google Patents
Piston ring for automatic weapon with breech-unlocking piston Download PDFInfo
- Publication number
- US3333510A US3333510A US501399A US50139965A US3333510A US 3333510 A US3333510 A US 3333510A US 501399 A US501399 A US 501399A US 50139965 A US50139965 A US 50139965A US 3333510 A US3333510 A US 3333510A
- Authority
- US
- United States
- Prior art keywords
- piston
- cylinder
- ring
- gas
- breech
- 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
Links
Images
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
- F41A5/18—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
- F41A5/26—Arrangements or systems for bleeding the gas from the barrel
Definitions
- a slotted resilient ring with a conical surface cooperates with the conical surface on the piston and the ring is located between the flange of the insert and the piston conical surface so that when subjected to the pressure of the explosion gases the ring will expand and be pressed against the wall of the gas cylinder.
- This invention relates to an automatic firearm in which the gas-filled space on one side of the piston is sealed off by at least one slit ring fitted to the piston.
- the piston rings used for such weapons in the prior art suffer from the drawback that the heavy stresses imposed upon them by automatic weapons With a high rate of fire cause them either to break or to lose their spring tension and hence obturating powers after a short operating period, leading to rapid fouling of the gas-piston cylinder with powder-smoke deposits which have an adverse elfect on the proper functioning of the gas piston.
- An object of the present invention is to eliminate this drawback.
- a further object of the invention is to provide a male cone on the piston with its apex pointing in the direction of the piston chamber over which fits a female conical surface on the piston ring, which latter is forced apart by the pressure of the explosion gases.
- a still further object is to provide an arrangement wherein the ring does not need to be under stress the whole time and the pressure of the ring against the cylinder walls which is required for obturation being created anew with each shot fired, i.e. each time that explosion gases enter the cylinder the ring is forced over the male cone on the piston and hence expands radially against the cylinder walls.
- a further object is to provide an arrangement wherein the ring can be so massively dimensioned as to eliminate breakages.
- FIGURE 1 is a longitudinal cross-sectional view of a portion of the firearm.
- FIGURE 2 is a partial cross-sectional view taken along section line II-II of FIGURE 1, and
- FIGURE 3 is a partial cross-sectional view taken through the piston ring.
- FIGURE 1 shows the barrel 5 fitted to the receiver 4 by means of a bayonet joint 6.
- the receiver 4 is provided with a housing portion 7, into which the insert 8 is screwed. Together with the housing portion 7, the insert 8 forms a cylinder 9 in which the piston 10 can slide.
- This latter transmits its motion via the rod 11 to the breech mechanism in order to unlock the latter after a shothas been fired in a manner which is well known, and will not therefore be described here in further detail.
- a packet 12 of circular springs is located, which serves to buffer the piston 10 at the rear end of its stroke.
- the rear portion of the piston-rod 11 is in the form of a hollow tube accommodating the return spring 13.
- the rear end of the spring 13 abuts against a part of the receiver 4 which is not shown in the drawing.
- the piston-head insert 24 is screwed into the tapped hole 23 of the piston 10.
- the front end of the insert 24 is in the form of a flange 25.
- the ring 29, broken by the slot 30, has the same external diameter as the piston guide-surface 27, and slides in the cylinder 9. Its internal cylindrical surface 31, see FIG. 3, Widens out in the form of a female cone 32, whose angle corresponds to that of the male cone 28 of the piston 10.
- the internal diameter of the ring 29 is smaller than the external diameter of the flange 25 of the piston-crown insert 24.
- the axial play of the ring 29 is limited in front by the rear surface of the flange 25 and behind by the conical surface 28 of the piston 10.
- the gas-piston 10 is forced backwardly by the pressure of the gases and unlocks the breech mechanism of the gun.
- the ring 29 is also subjected to the gas pressure, which presses it backwardly over the conical surface 28 of the piston 10, so that it expands elastically until its outer surface 33 is forced against the Walls of the cylinder 9 to form a gas-seal.
- the pressure inside the barrel 5 falls back to atmospheric pressure, as does also that in the cylinder-head space 9, upon which the ring 29 contracts again and hence does not hinder the return of the piston 10 to its starting position under the action of the return spring 13.
- An automatic firearm comprising a barrel having a gas-bleed port, a receiver mounted on said barrel, a gas cylinder in said receiver having a gas chamber, means connecting said chamber of said cylinder with said gasbleed port, a piston reciprocating in said cylinder to operate the breech mechanism of said firearm, an insert for said piston having a flange, a conical surface on said piston having its apex pointing in the direction of said cylinder chamber and a slotted resilient ring having a conical surface cooperating with said first named conical surface, said ring being located between said flange and said conical surface on the end of said piston, so that when subjected to the pressure of the explosion gases said ring will expand and the outer perimeter thereof will be pressed against the Wall of said cylinder.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1454864A CH427577A (de) | 1964-11-11 | 1964-11-11 | Selbsttätige Feuerwaffe mit Verschluss-Entriegelungskolben |
Publications (1)
Publication Number | Publication Date |
---|---|
US3333510A true US3333510A (en) | 1967-08-01 |
Family
ID=4401730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US501399A Expired - Lifetime US3333510A (en) | 1964-11-11 | 1965-10-22 | Piston ring for automatic weapon with breech-unlocking piston |
Country Status (6)
Country | Link |
---|---|
US (1) | US3333510A (de) |
AT (1) | AT261445B (de) |
BE (1) | BE671824A (de) |
CH (1) | CH427577A (de) |
DE (1) | DE1288958B (de) |
GB (1) | GB1113458A (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3601002A (en) * | 1969-02-14 | 1971-08-24 | Olin Mathieson | Gas piston for shotgun |
US20110179945A1 (en) * | 2010-01-26 | 2011-07-28 | Robert Bernard Iredale Clark | Gas Operating Systems, Subsystems, Components and Processes |
WO2012097327A2 (en) * | 2011-01-14 | 2012-07-19 | ArmWest, LLC | Firearm |
US8813406B1 (en) | 2010-03-25 | 2014-08-26 | ArmWest, LLC | High capacity magazine with multiple springs |
US8973483B2 (en) | 2010-03-25 | 2015-03-10 | Arm West, Llc | Gas regulator system |
US9228786B2 (en) | 2011-01-14 | 2016-01-05 | ArmWest, LLC | Quick barrel change firearm |
US20160202006A1 (en) * | 2015-01-13 | 2016-07-14 | Sig Sauer, Inc. | Regulator for a firearm auto loader |
US9488423B2 (en) | 2011-01-14 | 2016-11-08 | Arm West, Llc | Firearm systems and methods |
US10488136B2 (en) | 2016-09-23 | 2019-11-26 | ArmWest, LLC | Selective fire firearm systems and methods |
CN111473686A (zh) * | 2015-05-22 | 2020-07-31 | 亚维斯特有限责任公司 | 枪支系统及方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1333023A (en) * | 1920-03-09 | avotto oj | ||
GB638164A (en) * | 1947-04-25 | 1950-05-31 | Jean Alfred Troendle | Improvements relating to fluid-tight packing means |
US3114290A (en) * | 1962-10-12 | 1963-12-17 | Earle M Harvey | Breech sealing means for automatic firearms adapted to fire caseless ammunition |
AT233976B (de) * | 1961-11-14 | 1964-06-10 | Georg Buechl | Streugutbehälter, der an der Rückwand der nach hinten kippbaren Pritsche eines Lastwagens angelenkt ist |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH284467A (de) * | 1950-08-23 | 1952-07-31 | Oerlikon Buehrle Ag | Patronenlagerdichtung an automatischen Feuerwaffen mit Revolvertrommel. |
-
1964
- 1964-11-11 CH CH1454864A patent/CH427577A/de unknown
-
1965
- 1965-10-20 DE DEO11194A patent/DE1288958B/de active Pending
- 1965-10-20 AT AT949065A patent/AT261445B/de active
- 1965-10-22 US US501399A patent/US3333510A/en not_active Expired - Lifetime
- 1965-10-27 GB GB45525/65A patent/GB1113458A/en not_active Expired
- 1965-11-04 BE BE671824D patent/BE671824A/xx unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1333023A (en) * | 1920-03-09 | avotto oj | ||
GB638164A (en) * | 1947-04-25 | 1950-05-31 | Jean Alfred Troendle | Improvements relating to fluid-tight packing means |
AT233976B (de) * | 1961-11-14 | 1964-06-10 | Georg Buechl | Streugutbehälter, der an der Rückwand der nach hinten kippbaren Pritsche eines Lastwagens angelenkt ist |
US3114290A (en) * | 1962-10-12 | 1963-12-17 | Earle M Harvey | Breech sealing means for automatic firearms adapted to fire caseless ammunition |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3601002A (en) * | 1969-02-14 | 1971-08-24 | Olin Mathieson | Gas piston for shotgun |
US20110179945A1 (en) * | 2010-01-26 | 2011-07-28 | Robert Bernard Iredale Clark | Gas Operating Systems, Subsystems, Components and Processes |
US8443711B2 (en) | 2010-01-26 | 2013-05-21 | Leitner-Wise Defense, Inc. | Gas operating systems, subsystems, components and processes |
US8997622B2 (en) | 2010-01-26 | 2015-04-07 | Leitner-Wise Defense, Inc. | Gas operating systems, subsystems, components and processes |
US8813406B1 (en) | 2010-03-25 | 2014-08-26 | ArmWest, LLC | High capacity magazine with multiple springs |
US8973483B2 (en) | 2010-03-25 | 2015-03-10 | Arm West, Llc | Gas regulator system |
US9228786B2 (en) | 2011-01-14 | 2016-01-05 | ArmWest, LLC | Quick barrel change firearm |
US10415906B2 (en) | 2011-01-14 | 2019-09-17 | ArmWest, LLC | Firearm systems and methods |
WO2012097327A3 (en) * | 2011-01-14 | 2013-05-23 | ArmWest, LLC | Firearm |
US9038525B2 (en) | 2011-01-14 | 2015-05-26 | ArmWest, LLC | Firearm |
WO2012097327A2 (en) * | 2011-01-14 | 2012-07-19 | ArmWest, LLC | Firearm |
CN103443575B (zh) * | 2011-01-14 | 2016-01-13 | 亚维斯特有限责任公司 | 枪支、组装枪支的方法和用于枪支的枪栓群组 |
RU2587319C2 (ru) * | 2011-01-14 | 2016-06-20 | АРМВЕСТ, ЭлЭсСи | Огнестрельное оружие |
CN103443575A (zh) * | 2011-01-14 | 2013-12-11 | 亚维斯特有限责任公司 | 枪支 |
US9488423B2 (en) | 2011-01-14 | 2016-11-08 | Arm West, Llc | Firearm systems and methods |
US11137222B2 (en) | 2011-01-14 | 2021-10-05 | ArmWest, LLC | Firearm systems and methods |
US20160202006A1 (en) * | 2015-01-13 | 2016-07-14 | Sig Sauer, Inc. | Regulator for a firearm auto loader |
US10222151B2 (en) | 2015-01-13 | 2019-03-05 | Sig Sauer, Inc. | Regulator for a firearm auto loader |
US9702644B2 (en) * | 2015-01-13 | 2017-07-11 | Sig Sauer, Inc. | Regulator for a firearm auto loader |
CN111473686A (zh) * | 2015-05-22 | 2020-07-31 | 亚维斯特有限责任公司 | 枪支系统及方法 |
US10488136B2 (en) | 2016-09-23 | 2019-11-26 | ArmWest, LLC | Selective fire firearm systems and methods |
US11650023B2 (en) | 2016-09-23 | 2023-05-16 | Arm West, Llc | Selective fire firearm systems and methods |
Also Published As
Publication number | Publication date |
---|---|
AT261445B (de) | 1968-04-25 |
CH427577A (de) | 1966-12-31 |
DE1288958B (de) | 1969-02-06 |
BE671824A (de) | 1966-03-01 |
GB1113458A (en) | 1968-05-15 |
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