US3650177A - Device for controlling the firing frequency in automatic firearms - Google Patents
Device for controlling the firing frequency in automatic firearms Download PDFInfo
- Publication number
- US3650177A US3650177A US56012A US3650177DA US3650177A US 3650177 A US3650177 A US 3650177A US 56012 A US56012 A US 56012A US 3650177D A US3650177D A US 3650177DA US 3650177 A US3650177 A US 3650177A
- Authority
- US
- United States
- Prior art keywords
- cylinder
- piston
- buffer
- head
- passages
- 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
- F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
- F41A19/03—Shot-velocity control
Definitions
- a device for changing the firing frequency of rapidly firing automatic firearms in which a buffer case attached to the housing of the firearm contains a buffer spring urging the head of the buffer case into the housing of the reciprocating breech block.
- a hydraulic cylinder is surrounded by a recoil spring and the latter is disposed within the buffer spring and has a cylinder head arranged within the buffer head.
- a number of radially slidable locking pins in the cylinder head is adapted to be locked to an axial locking bolt on the breech block when the latter moves in one direction in which the two mentioned 7 springs are put under higher tension while the buffer head and direction.
- the piston and piston rod are stationary and the 51 1nt.Cl ..F41d 11/12 pressure fluid in the h draulic cylinder is displaced by the l l y 31 Field OI Search 1 198 moving cylinder through bores in the piston from one side to the other side thereof until an axially slidable seal closes the 'l l Referellfi Ci'ed bores in the piston.
- the pressure fluid can now return the one side of the piston only through radial throttling bores in the UNITED STATES PATENTS piston rod which has an axial bore extending through the 1,464,276 8/1923 Vincon ..89/l31 center of the piston and this causes a delay in the return of the 2,434,326 1/1948 Maciejowski ..89/1 30 breech block in the other direction.
- the present invention relates to an automatic firearm, as for instance, a rapid-fire cannon or a machine gun, with rapid firing frequency (cadence), in which if necessary the firing frequency can be continuously varied.
- the firing frequency may be throttled to such an extent that practically a single shot may be fired.
- the firing frequency is customarily in the order of size of approximately 1000 shots per minute.
- the firing frequency may be decreased to a value of only approximately 60 shots per minute.
- the desired object is attained by arranging in the weapon an auxiliary mechanism actuatable by means of the trigger, which holds back temporarily the firing pin by a locked breech.
- the combat-technical problem is solved, establishing a sustained fire at predetermined, desired or intended time intervals, respectively, with the greatest possible accuracy in firing.
- a further important object of the invention is to employ the device in a more economical-logistic range to effect, in a matter not calculable in advance, a saving in munitions.
- a rapid firing firearm provided with a device in accordance with the invention and comprising means for continuously changing the firing frequency from a high value to a very low value will now be described with reference to the accompany drawings:
- THE DRAWINGS F l0. 1 illustrates a vertical section of the device according to the invention before its connection with the rapidly returning breech-block of the weapon
- a buffer case la in which are disposed mechanically and hydraulically operating means, which cause a rapid reverse movement of the breech-block mass.
- a buffer head 2 In front of the hollow cylindrical buffer case 1a is arranged, so as to extend into the housing 1, a buffer head 2 whose end wall 20 is provided with a central aperture 2c. Into the hollow cylindrical rear portion of the buffer head 2 extends axially slidably the head 6 of a cylinder adapted to contain a displaceable fluid pressure medium.
- the cylinder 5 has mounted therein a piston 4 having a tubular piston rod 4d whose outermost or right-hand end projecting from the right-hand end of the cylinder 5 is fixedly attached to the end wall 1b of the buffer case la.
- a helical recoil spring 8 surrounds the cylinder 5 and engages with one end a shoulder on the piston head 6 and with its other end engages the end wall lb of the buffer case la.
- a helical buffer spring 3 surrounds with clearance the helical spring 3 and with one end engages the right-hand end of the buffer head 2 and with its other end the end wall of the buffer case la.
- the cylinder head 6 carries in each of four radial bores a slidable locking pin 7 adapted to engage an axial locking bolt 13 attached to the rear face of the breech-block 12.
- the front surface 13a of the locking bolt 13 strikes a surface 60 forming the bottom of a recess 6b in the cylinder head 6.
- the breech-block 12 engages then with its end surface 12a correspondingly constructed front surface 2a on the buffer head 2. This causes both the buffer spring 3 as well as the recoil spring 8 to be tensioned until the kinetic energy of the breechblock mass is absorbed.
- the hydraulic cylinder 5 is urged rearwardly toward the right by the head 6.
- the radially disposed locking pins 7 which are arranged uniformly distributed circumferentially in the head 6 ride positively along the guide surface 2b in the buffer head 2 and are moved in engagement with the inclined surface 13b on the rear face of the collar of the bolt 13. This results in a locking engagement between the surface 13b and the locking pins 7.
- the pressure fluid stored in the left-hand chamber 5a of the cylinder 5 is controlled by a plurality of axially extending bores 4a in the stationary piston 4 and causes a removal of a sealing member 11a ofthe sealing system 11 which is arranged on the tubular piston rod M from the right-hand side of the piston 4 in a direction to uncover or open these bores 4a.
- the pressure medium then flows through these bores 4a and enters the rear or right-hand end of the axially movable cylinder 5, namely the chamber 512 in which the piston rod 4d is disposed.
- the time expended in this operation is proportional to the complete absorption of the kinetic energy of the breech-block mass.
- the energy stored in the two helical springs 3 and 8 is now again released. The release of the energy takes place, however, not in sudden bursts, but in a delayed manner described in the following:
- the pressure medium which has reached the chamber 5b in view of the fact that the bores 4a are now closed by the sealing member 11a and the compression spring 1112 acting on the same, can no longer flow through these bores 4a and back into the chamber 5a.
- the pressure medium can take now a path over one (or several) radial throttle-passages 4b provided with the tubular piston rod 4d of the piston 4.
- These throttle passages 4b are connected with a reduced axial bore 4c in the piston rod 411' and extend through the center of the piston 4 so that the pressure medium may reach along this path, namely through the radial passages 4b and the axial bore 4c again the left-hand chamber 5a ofthe cylinder 5.
- the firing frequency of the firearm is already substantially decreased. This decrease, however, would be a rather accidental or arbitrary one, because it is adjusted only for one predetermined firing frequency.
- the invention is, however, not limited to a firing frequency adjustment selected accidentally and arbitrarily and limited in this described manner to one frequency.
- the firing frequency can be continuously adjusted from a maximum to a minimum value.
- the quantity of the pressure medium passing from the radial passages 4b into the axial bore 40 may be changed continuously, so that the firing frequency is continuously changeable and may be selected according to the tactical combat requirements.
- the axial adjustment of the nozzle needle 9 takes place in any desired manner, for example, by a screwdriver or the like.
- a device for controlling the firing frequency of a rapidly firing automatic firearm having a housing and an axially reciprocable breech-block therein, said device comprising a buffer case fixedly attached to said housing and having a buffer spring therein acting upon an axially movable buffer head adapted to be engaged and tensioned by said breechblock when the latter is moved in one direction, an axially movable hydraulic cylinder engaged by a recoil spring in said buffer case, said cylinder having a head with movable locking pins therein for lockingly engaging said breech-block when the same has been moved in said one direction and has engaged said buffer head, a piston in said hydraulic cylinder and fixedly attached to said buffer case, passages in said piston for permitting hydraulic fluid to pass therethrough when said cylinder is moved by said breech-block in said one direction, sealing means for closing said passages at the end of said movement of said breech-block, and throttling apertures in said piston for returning the hydraulic fluid to the other side of said piston and thereby delaying the movement
- a device for controlling the firing frequency of a rapidly firing automatic firearm having a housing and an axially reciprocable breech-block in said housing, wherein the improvement comprises a buffer case attached to said housing and having a buffer head at one end extending into said housing, an axially movable cylinder containing a fluid pressure medium in said buffer case, a stationary piston in said cylinder, said piston having an axially bored piston rod fixedly attached to said buffer case, a buffer spring between said buffer head and an opposite closed end of said buffer case, a head on said cylinder and having therein a central cavity and a number of radial slidable locking pins adapted to move into said cavity, a recoil spring surrounding said cylinder and extending between said head and the closed end of said buffer case, fluid passages in said piston for connecting the two chambers to both sides of said piston in said cylinder with each other, a spring operated sealing member on said piston rod adapted to close said fluid passages, an axially extending bolt on said breech-block for entering upon movement
- a device including means for continuously changing the throttling effect of said throttling passages, said means comprising a valve seat in said axial bore of said piston rod into which the radial throttling passages terminate, and an adjustable needle valve axially movable in said axial bore for continuously controlling the discharge aperture of said radial passages.
- a device including means for continuously changing the throttling effect of said throttling passages, said means comprising a valve seat in said axial bore of said piston rod into which the radial throttling passages terminate, and an adjustable needle valve axially movable in said axial bore for continuously controlling the discharge aperture of said radial passages, said needle valve extending through said axial bore toward the end of the piston rod which is fixedly connected to said buffer case, said end of said piston rod having a threaded connection with said needle valve which is accessible from the exterior of said buffer case for rotatable adjustment.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Toys (AREA)
- Fluid-Damping Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5601270A | 1970-07-01 | 1970-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3650177A true US3650177A (en) | 1972-03-21 |
Family
ID=22001591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US56012A Expired - Lifetime US3650177A (en) | 1970-07-01 | 1970-07-01 | Device for controlling the firing frequency in automatic firearms |
Country Status (8)
Country | Link |
---|---|
US (1) | US3650177A (de) |
JP (1) | JPS5124838B1 (de) |
BE (1) | BE768055A (de) |
CH (1) | CH519696A (de) |
FR (1) | FR2098035A5 (de) |
GB (1) | GB1340922A (de) |
NO (1) | NO130607C (de) |
SE (1) | SE386508B (de) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523509A (en) * | 1981-08-04 | 1985-06-18 | Heckler & Koch Gmbh | Shoulder arm |
US5379677A (en) * | 1992-05-12 | 1995-01-10 | Bushman Limited | Fire rate control system for a submachine gun or light machine gun |
US5388500A (en) * | 1994-03-07 | 1995-02-14 | Petrovich; Paul A. | Delayed blow-back for firearms |
US5722383A (en) * | 1995-12-01 | 1998-03-03 | Tippmann Pneumatics, Inc. | Impeder for a gun firing mechanism with ammunition feeder and mode selector |
US5770814A (en) * | 1996-05-09 | 1998-06-23 | Defense Technologies Limited | Firing rate regulating mechanism |
US6467473B1 (en) | 1999-02-26 | 2002-10-22 | Airgun Designs, Inc. | Paintball feeders |
US6488019B2 (en) | 1999-02-26 | 2002-12-03 | Thomas G. Kotsiopoulos | Feeder for a paintball gun |
US6609511B2 (en) | 1999-02-26 | 2003-08-26 | Airgun Designs, Inc. | Conveyor feed apparatus for a paintball gun |
US6758126B1 (en) * | 2003-03-24 | 2004-07-06 | The United States Of America As Represented By The Secretary Of The Army | Apparatus for initially slowly a backwards movement of a bolt group |
US6848351B1 (en) * | 2002-05-07 | 2005-02-01 | Robert B. Davies | Rifle |
US20070234897A1 (en) * | 2004-09-15 | 2007-10-11 | Poff Charles Jr | Firearm recoil absorbing system |
US20100212648A1 (en) * | 2009-02-24 | 2010-08-26 | Shu-Mei Tseng | Firing frequency controller |
US20100282064A1 (en) * | 2006-05-17 | 2010-11-11 | Wolfgang Bantle | Locking systems for use with firearms |
US20140230642A1 (en) * | 2013-02-15 | 2014-08-21 | George L. Reynolds | Rate control mechanism |
US11512916B2 (en) * | 2018-09-06 | 2022-11-29 | George L. Reynolds | Rate control mechanism for fully automatic firearms |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH594864A5 (de) * | 1976-10-27 | 1978-01-31 | Oerlikon Buehrle Ag | |
GB2267558B (en) * | 1992-05-12 | 1996-07-10 | Bushman Ltd | Fire rate control system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1464276A (en) * | 1922-03-31 | 1923-08-07 | Vincon Gustavo | Automatic firearm |
US2434326A (en) * | 1944-06-24 | 1948-01-13 | United Shoe Machinery Corp | Mechanism for retarding the rate of fire of automatic firearms |
-
1970
- 1970-07-01 US US56012A patent/US3650177A/en not_active Expired - Lifetime
-
1971
- 1971-05-13 CH CH706171A patent/CH519696A/de not_active IP Right Cessation
- 1971-06-03 NO NO2087/71A patent/NO130607C/no unknown
- 1971-06-03 BE BE768055A patent/BE768055A/xx unknown
- 1971-06-10 GB GB1995171*[A patent/GB1340922A/en not_active Expired
- 1971-06-25 FR FR7123241A patent/FR2098035A5/fr not_active Expired
- 1971-06-29 JP JP46046912A patent/JPS5124838B1/ja active Pending
- 1971-06-29 SE SE7108390A patent/SE386508B/xx unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1464276A (en) * | 1922-03-31 | 1923-08-07 | Vincon Gustavo | Automatic firearm |
US2434326A (en) * | 1944-06-24 | 1948-01-13 | United Shoe Machinery Corp | Mechanism for retarding the rate of fire of automatic firearms |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523509A (en) * | 1981-08-04 | 1985-06-18 | Heckler & Koch Gmbh | Shoulder arm |
US5379677A (en) * | 1992-05-12 | 1995-01-10 | Bushman Limited | Fire rate control system for a submachine gun or light machine gun |
US5388500A (en) * | 1994-03-07 | 1995-02-14 | Petrovich; Paul A. | Delayed blow-back for firearms |
US5722383A (en) * | 1995-12-01 | 1998-03-03 | Tippmann Pneumatics, Inc. | Impeder for a gun firing mechanism with ammunition feeder and mode selector |
US5770814A (en) * | 1996-05-09 | 1998-06-23 | Defense Technologies Limited | Firing rate regulating mechanism |
US6467473B1 (en) | 1999-02-26 | 2002-10-22 | Airgun Designs, Inc. | Paintball feeders |
US6488019B2 (en) | 1999-02-26 | 2002-12-03 | Thomas G. Kotsiopoulos | Feeder for a paintball gun |
US6609511B2 (en) | 1999-02-26 | 2003-08-26 | Airgun Designs, Inc. | Conveyor feed apparatus for a paintball gun |
US7213498B1 (en) * | 2002-05-07 | 2007-05-08 | Davies Robert B | Rifle |
US6848351B1 (en) * | 2002-05-07 | 2005-02-01 | Robert B. Davies | Rifle |
US6758126B1 (en) * | 2003-03-24 | 2004-07-06 | The United States Of America As Represented By The Secretary Of The Army | Apparatus for initially slowly a backwards movement of a bolt group |
US20070234897A1 (en) * | 2004-09-15 | 2007-10-11 | Poff Charles Jr | Firearm recoil absorbing system |
US7343844B2 (en) * | 2004-09-15 | 2008-03-18 | Poff Jr Charles | Firearm recoil absorbing system |
US20100282064A1 (en) * | 2006-05-17 | 2010-11-11 | Wolfgang Bantle | Locking systems for use with firearms |
US8074556B2 (en) * | 2006-05-17 | 2011-12-13 | Heckler & Koch, Gmbh | Locking systems for use with firearms |
US20100212648A1 (en) * | 2009-02-24 | 2010-08-26 | Shu-Mei Tseng | Firing frequency controller |
US7992483B2 (en) * | 2009-02-24 | 2011-08-09 | Shu-Mei Tseng | Firing frequency controller |
US20140230642A1 (en) * | 2013-02-15 | 2014-08-21 | George L. Reynolds | Rate control mechanism |
US8899141B2 (en) * | 2013-02-15 | 2014-12-02 | George L. Reynolds | Rate control mechanism |
US11512916B2 (en) * | 2018-09-06 | 2022-11-29 | George L. Reynolds | Rate control mechanism for fully automatic firearms |
Also Published As
Publication number | Publication date |
---|---|
BE768055A (fr) | 1971-11-03 |
JPS5124838B1 (de) | 1976-07-27 |
FR2098035A5 (de) | 1972-03-03 |
SE386508B (sv) | 1976-08-09 |
DE2121845A1 (de) | 1972-01-05 |
CH519696A (de) | 1972-02-29 |
NO130607B (de) | 1974-09-30 |
NO130607C (de) | 1975-01-08 |
GB1340922A (en) | 1973-12-19 |
DE2121845B2 (de) | 1976-12-23 |
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