US3379188A - Trigger type compressed air gun having a piston with air valve and air valve actuator - Google Patents

Trigger type compressed air gun having a piston with air valve and air valve actuator Download PDF

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Publication number
US3379188A
US3379188A US417107A US41710764A US3379188A US 3379188 A US3379188 A US 3379188A US 417107 A US417107 A US 417107A US 41710764 A US41710764 A US 41710764A US 3379188 A US3379188 A US 3379188A
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United States
Prior art keywords
valve
piston
cylinder
air
barrel
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Expired - Lifetime
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US417107A
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English (en)
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Walther Fritz
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Individual
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Individual
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Publication of US3379188A publication Critical patent/US3379188A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C7/00—Shoulder-fired smallarms, e.g. rifles, carbines, shotguns
    • F41C7/11—Breakdown shotguns or rifles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/70—Details not provided for in F41B11/50 or F41B11/60
    • F41B11/72—Valves; Arrangement of valves
    • F41B11/723—Valves; Arrangement of valves for controlling gas pressure for firing the projectile only

Definitions

  • the instant invention relates to firearms and more particularly to ⁇ a compressed air weapon having an air compressing cylinder and a piston reciprocally mounted within said cylinder by means of a lever system, wherein the lever system compresses the captured air when cocking, thereby enabling a trigger device to trigger the shot, said device consisting of a trigger member and an overliow valve coupled therewith, through which the compressed air enters the barrel.
  • Compressed air guns of this type have the advantage of a high degree of precision with regard to the accuracy of firing and a highly uniform firing capability, the energy propelling the projectile being substantially equal for each shot. This is achieved to a great degree by the fact that, upon triggering of the shot, no parts of substantial mass except the trigger mechanism are moved, yas is the case with most of the compressed air guns of the prior art.
  • the instant invention further proposes that the valve which selectively seals the over- ⁇ iow channel communicating with the compressed air cylinder and the barrel has its valve shaft protruding into the action track (i.e., normal path of movement) of a striker member which upon squeezing of the trigger and under the effect of a striker plate spring, the striker plate is urged against the valve shaft (or against the element connected therewith), thereby lifting the valve shaft together with its valve head to open the air overow channel.
  • a striker member to strike the valve shaft (or some element connected therewith) an extremely accurate triggering of the shot is achieved ⁇ and is, in fact, performed totally independently of the manner in which the trigger is squeezed.
  • this pivots a trigger sear, thereby releasing the striker member.
  • no direct or indirect mechanical connection exists between the trigger and the air overow valve in order to lift said valve.
  • the striker member is preferably disposed so as to be substantially parallel to the longitudinal axis of the compressed air cylinder and is coupled to a lever system, and is provided with a first end which protrudes into the path followed :by the piston rod of the piston in the compressed air cylinder for the purpose of being engaged by the piston rod at one point of its travel in order to tension the striker mem- 3,379,l88 Patented Apr. 23, 1968 ber spring biasing means.
  • the piston rod is provided with -a nose thereon for engaging said striker member.
  • the striker member is restrained from coming under the control of the firing pin spring means which is in its fully charged position so las to lift the overflow valve shaft by means of a pivot-ally mounted catch-latch which latches the striker plate with one of its ends while a second end thereof abuts the trigger sear.
  • the catch-latch which preferably is designed as a double-arm lever, has one of its ends abutting the trigger sear, and has a lug near its center which protrudes into the path of the striker plate, while the other end protrudes into the tract of a curved sector provided in the striker member, whereby, upon lowering -of the striker member the catchlatch is pivoted so that one of its ends releases the trigger lug enabling the trigger lug to swing back to its dead center position after the shot has been fired.
  • the valve which activates the triggering of the shot is contained within an air overow channel which is designed in such a way that a chamber containing the valve head of the valve has its axis substantially at a right angle to the overliow channel, which also means that the valve head shaft assumes the same position.
  • the chamber is closed by a threaded plug, which, firstly acts as the counter-bearing for a valve spring, and secondly, fills the inner space of the chamber to such an extent that the dead space in the chamber is being kept to a minimum, in order to obtain the most favorable transfer of the highly compressed Iair from the inner space into the barrel.
  • the valve head is preferably cone-shaped and has its conical shaped surface resting upon a gasket consisting of resilient material disposed at the bottom of the chamber, said gasket preferably being toroidal and having a circular cross-section.
  • the chamber is preferably inserted from the outside into the body of the gun.
  • the chamber which opens to the exterior of the weapon is covered with a cap after being inserted into the weapon so that the exterior surfaceof the gun is substantially smooth.
  • the compressed air gun of the present invention is further provided with ⁇ a barrel which is pivotally mounted at a stationary point and it latched in its closed position by means of a barrel-blocking bolt, which occurs due to the force-locking effect of the blocking bolt device.
  • the blocking bolt has two beveled surfaces and is urged against -a stationary lug by the force of a compressed spring, whereby said bolt, in its locked-barrel position, is locked beneath the stationary lug.
  • the spring which acts upon the barrel-blocking bolt is designed to be strong enough so that at a specific pivoting position of the barrel the barrel-blocking bolt, because of its two bevelled surfaces, has its lower bevelled surface urged against the stationary lug, thereupon completely releasing the barrel so as to be tilted open. Since the spring in such cases should not have more than a certain force, it is not capable of pulling the barrel into the correct and desirable position if the latter is not properly tilted back, which is partly due to the short lever arm relative to the barrel tilting axis. If, however, a stronger spring is used, too much force must be applied -to tilt the barrel open.
  • a pivotally mounted pull rod is coupled to the barrelblocking bolt and has its free end hinged to a pivotally mounted manually operable angle lever, which is preferably arranged below the barrel in the region in front of the tilting axis thereof, i.e., toward the muzzle face, so that by means of a manipulation the barrel-bolt may be simply and quickly released and the barrel tilted back by thumb pressure against the angle lever, in order to permit the placing of a projectile into the projectile chamber.
  • Another object of the instant invention is to provide a compressed air weapon having novel means for triggering each shot.
  • Another object f the instant invention is to provide a compressed air weapon having novel means for triggering each shot wherein the weapon trigger is not mechanically linked directly to the compressed air weapon valve means.
  • Still another object of the instant invention is to provide a novel compressed air weapon having a spring loaded striker member arranged to be released by a -trigger assembly for unseating a valve means wherein no mechanical coupling direct exists between the trigger assembly and the valve member so as to insure a very accurately metered shot regardless of the manner in which the trigger is squeezed.
  • Another object of the instant invention is to provide a novel compressed air weapon having a tiltably mounted barrel and barrel jacket and being further comprised of novel barrel locating means for insuring that the barrel is in the fully closed position.
  • Still another object of the instant invention is to provide a novel compressed air weapon having a tiltably mounted barrel and barrel jacket and being further cornprised of novel barrel locating means for insuring that the barrel is in the fully closed position, said locating means being further provided with a manually operable lever arm to facilitate tilting of the barrel to the open position for the loading of a projectile into the weapon.
  • the sole figure shows a longitudinal cross-section of a compressed air pistol designed in accordance with the principles of the instant invention.
  • the sole gure shows a compressed air piston having a stock which provides support and securement for an air compressing cylinder 12.
  • a piston 13 is reciprocally mounted within cylinder 12, and is movable up and downwardly under control of a piston rod 14 coupled thereto, in order to successively draw air into kthe cylinder and subsequently compress the air in cylinder 12.
  • In the upper part 15 of the stock is air overflow channel 16, having a first port 16a connecting the tapered end 12a of cylinder 12 to valve chamber 62 and a second port 16b connecting the rear end of barrel 17 to valve chamber 62.
  • a member 23 Aligned in the axial direction, parallel to cylinder 12 and preferably between cylinder 12 and the triggering device 21 is a member 23 which is reciprocally mounted within a jacket 22, defining a striker chamber.
  • the member 23 hereinafter designated the striker member, is provided with a retracting bar 24 having a lower, bent over, end 25, extending into a slit 12b in the lower part of cylinder 12 and further extending into the path of nose 14a provided at the upper end of piston rod 14.
  • Striker member spring 27 is wound about bar 24 and has a first end abutting stop block 26, while the upper end of spring 27 abuts striker member 23, urging it upwardly.
  • the striker member 23 has a curved surface 28, which cooperates with the lug 29 at the lower end 30 of the catch-latch 31, the catch-latch 31 being a double arm tripping lever pivotally mounted to weapon 10 by bolt 32.
  • the upper end 33 of the catch-latch 31 has a blocking lip 34 which is positioned with its lower edge against the upper edge of the striking member 23..
  • Another blocking lip 35 integral with the tripping lever bears against one end 36 of trigger sear 37, thereby bracing catch-latch 31 through its upper end 33.
  • Piston 13 draws in air during its downward movement into the inner space of the cylinder 12.
  • nose 14a abuts the striker end 25 of rod 24 and pulls the end 25 and thereby rod 24, as well as striker member 23, downward.
  • lug 29 makes sliding contact with curved surface 28 of striker member 23 to rotate the lower end 30 of catch-latch 31 in the clockwise direction.
  • upper end 33 of catch-latch 31l positions its blocking lip 34 over the upper edge of striker member 23. This allows trigger sear 37 to move behind stop lug 35 at the extreme end of catch-latch 31 in the manner as shown in the figure, thus preventing trigger sear 37 from pivoting to the rear (i.e., clockwise about its pivot pin 70).
  • the upper end 33 of catch-latch 31 braces itself against the end 36 of trigger sear 37.
  • valve 39 is located, is available for the next shot.
  • a blocking bolt 41 In its cocked position, barrel 17 contained within barrel jacket 17a is blocked yby means of a blocking bolt 41, said bolt 41 being located in the lower part 17a' of jacket 17a and being substantially parallel to barrel 17.
  • Bolt 41 is movable along its axis and is guided between the two jaws 17a' and 17b.
  • Blocking bolt 41 has an upper tapered surface 43 which abuts a pin 42 arranged in jacket 17a.
  • Bolt 41 is urged against pin 42 by a powerful spring 44.
  • a pulling member 45 is coupled to bolt 41 which, in turn, is linked to manually operable angle lever 47 by means of bolt 46, said angle lever 47 in turn being mounted so as to be pivoted about bolt 48.
  • Angle lever 47 has a knurled surface 49a at its activating end 49 which is positioned in front of bearing bolt 50, which tiitably mounts barrel 17 and its jacket 17a between a pair of jaws (not shown).
  • blocking lug 41 has its slanted surface 43 released from the stationary bolt 42, thus permitting the barrel to be freely tilted to the open position.
  • Slanted surface 51 which is located below slanted surface 43 of the blocking bolt 41, may be arranged at a sufliciently steep angle, so that, when closing the barrel, the blocking bolt is automatically pressed back due to the sliding engagement between surface 51 and pin 42.
  • the slant of surface 43 of blocking bolt 41 is so designed that when taking into account the power of the spring, a secure cocking of the rear end of the barrel onto a resting surface, which may be adjustable if desired, is assured, in order that the barrel in its closed position is always in the same position in relation to the stock.
  • the barrel 17a makes an air-tight coupling with the stock 11 -by means of a resilient sealing ring 71.
  • the trigger 52 is squeezed, i.e., moved in the direction of arrow 74.
  • Pressure point bolt 53 mounted on the trigger 5-2 thereby presses against the intermediate trigger latch 54, which in turn ybears against the front end 55 of trigger sear 37, thereby pivoting sear 37 clockwise about pin '70 causing the rear end 36 to release the stop lip 35 mounted upon the upper arm 33 of catch-latch 31.
  • Striking pin spring 27 is now free to release its stored energy urging striking member 23 upward to urge blocking lip 34 and hence catchdatch 31 counter-clockwise about pin 32.
  • Valve chamber 62 is made air-tight by means of closing plug 63 which also serves as a counter bearing for valve spring 64.
  • the head of closing plug 63 is provided with an indentation 65 which receives and iirmly engages the arresting prongs 66 of covering lid 67.
  • the trigger device according to the invention can be arranged to be parallel to the barrel longitudinal axis, or it may, as in the case of the pistol, be arranged at a predetermined angle to the barrel axis with the axis generally being located, for instance, in t-he pistol grip of the gun butt.
  • the ring pin of the trigger device may be equipped fith an angularly aligned control surface, thereby in turn lifting the valve in order to open the compressed air overow valve shaft which lies at a right angle or approximately at a right angle to the direction of motion of the ring pin.
  • a compressed air weapon comprising:
  • a cocking lever system for controlling said piston, said piston being mounted to compress air captured in the cylinder when said lever system is in a cocked position;
  • trigger means for triggering a shot, said trigger means comprising a pivotally mounted trigger;
  • valve chamber connecting the compressed air cylinder with said barrel
  • said piston rod being pivotally connected with the cocking lever system for compressing air in said cylinder by first drawing air into said cylinder during an intake stroke and then compressing the air drawn in during a compression stroke;
  • valve means being positioned in said valve chamber between the compressed air cylinder and the barrel, said valve means having a irst end that is struck by the striker;
  • a striker member positioned adjacent said valve chamber being moved in a first direction when said piston is drawing air into said chamber and being moved in an opposite direction when said piston is compressing air in said cylinder;
  • a pivotally mounted catch-latch member having a rst end slidably engaging said striker member during the air intake stroke to pivot said catch-latch member to engage and restrain said striker member against said spring means;
  • said trigger means normally abutting a second end of said catch-latch member to hold the catch-latch member in its restraining position and being further adapted to release said catch-latch member when said trigger means is squeezed to unlatch said striker member;
  • said catch-latch member is rotated by the action of said spring means to release said striker member to strike said valve means first end and lift the valve means rst end together with its valve head to open the valve chamber and thereby allow the compressed air to move rapidly from its cylinder to said valve.
  • said striker member having a irst end protruding into the path of said piston rod;
  • said piston rod having a protruding nose engaging said Istriker member during the intake stroke to compress the striker member spring means;
  • said striker member being arrested against the effect of said striker member spring means in its remotest position from the valve chamber by said pivotally mounted catch-latch member.
  • valve chamber receiving the valve head of the valve means has its longitudinal axis aligned substantially at a right angle with the overflow channel coupling said valve chamber to said piston cylinder;
  • valve chamber being sealed by a threaded closing plug
  • valve spring means positioned between said valve head and said closing plug for retaining said valve head in the seated position
  • said closing plug substantially filling the dead space of the valve chamber.
  • a compressed air Weapon as claimed in claim 1 further comprising:
  • barrel-blocking bolt means being axially movable
  • a retracting lever having one of its ends pivotally coupled to said angle lever and being disposed in the vicinity of the barrel pivot point to facilitate manual release of the barrel-bolt in order to tilt open the barrel.
  • a compressed air weapon comprising:
  • a piston chamber having a pistou mounted for reciprocating movement therein;
  • valve member mounted for reciprocating movement in said valve chamber
  • bias means normally urging said valve member to a seated position in said valve chamber to seal-off said piston chamber
  • operating members including a piston rod for moving said piston during an intake stroke to ll the piston chamber with air and for moving said piston during a compression stroke to compress the air captured between the piston and the said piston chamber one end;
  • a striker member mounted for reciprocating movement in said striker chamber
  • said striker chamber having a iirst end communicating with said valve chamber and a second end communicating with said piston chamber;
  • valve member having one end thereof protruding into said striker chamber when in the seated position
  • retracting member having one end secured to said striker member and a second end projecting into said piston chamber
  • said piston rod having a nose engaging said retracting member during an intake stroke
  • said striker member having a cam surface engaging said latch means and causing said latch means to latch said striker member in the charged position during said intake stroke;
  • manually operable trigger means including third bias means to cause said latch means to latch the striker member in the charged position;
  • said striker member being released, when said trigger means is operated, to unseat said valve member enabling the compressed air in the piston chamber to be released into said barrel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
US417107A 1963-12-12 1964-12-09 Trigger type compressed air gun having a piston with air valve and air valve actuator Expired - Lifetime US3379188A (en)

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Application Number Priority Date Filing Date Title
DEW0035815 1963-12-12

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2237113A1 (de) * 1972-04-03 1973-10-11 Thaelmann Fahrzeug Jagdwaffen Verfahren zum beschleunigen eines projektils bei druckluftschusswaffen und vorrichtung zur durchfuehrung des verfahrens
US5165383A (en) * 1990-12-26 1992-11-24 Crosman Corporation Gun with pivoting barrel, projectile loader, and trigger interlock
US5404863A (en) * 1993-01-06 1995-04-11 Poor; Keith A. Gas-powered, single-shot gun with tip-up barrel for loading
US5553598A (en) * 1994-04-06 1996-09-10 Johnson Research And Development Co., Inc. Pneumatic launcher for a toy projectile and the like
US6226915B1 (en) * 1998-03-25 2001-05-08 Thomas G. Kotsiopoulos Forward angled grip for hand-held weapons and the like
US20040074927A1 (en) * 2002-10-18 2004-04-22 Lafond Luc Marcel Portable gas powered fluid dispenser
US20040226968A1 (en) * 2003-03-04 2004-11-18 Lafond Luc Marcel Nozzle for dispensable viscous materials
US20090065532A1 (en) * 2004-11-05 2009-03-12 Luc Marcel Lafond Dispensing device with secondary reservoir
US20140209082A1 (en) * 2013-01-25 2014-07-31 Kee Action Sports I Llc Paintball marker with split body
US10627187B1 (en) * 2018-10-30 2020-04-21 Kuan Ting Lin Shooting controller of paintball gun
US10704859B2 (en) 2018-11-06 2020-07-07 Gi Sportz Direct Llc Compressed gas gun front grip having battery access panel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20315989U1 (de) * 2003-10-17 2005-02-24 S.A.T. Swiss Arms Technology Ag Gewehr

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1404689A (en) * 1922-01-24 Air gun
US1818810A (en) * 1930-06-27 1931-08-11 Earl H Miller Automatic air rifle
US2940438A (en) * 1957-07-30 1960-06-14 Crosman Arms Company Inc Magazine gun

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1404689A (en) * 1922-01-24 Air gun
US1818810A (en) * 1930-06-27 1931-08-11 Earl H Miller Automatic air rifle
US2940438A (en) * 1957-07-30 1960-06-14 Crosman Arms Company Inc Magazine gun

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2237113A1 (de) * 1972-04-03 1973-10-11 Thaelmann Fahrzeug Jagdwaffen Verfahren zum beschleunigen eines projektils bei druckluftschusswaffen und vorrichtung zur durchfuehrung des verfahrens
US5165383A (en) * 1990-12-26 1992-11-24 Crosman Corporation Gun with pivoting barrel, projectile loader, and trigger interlock
US5404863A (en) * 1993-01-06 1995-04-11 Poor; Keith A. Gas-powered, single-shot gun with tip-up barrel for loading
US5553598A (en) * 1994-04-06 1996-09-10 Johnson Research And Development Co., Inc. Pneumatic launcher for a toy projectile and the like
US6226915B1 (en) * 1998-03-25 2001-05-08 Thomas G. Kotsiopoulos Forward angled grip for hand-held weapons and the like
US7163130B2 (en) 2002-10-18 2007-01-16 Luc Marcel Lafond Portable gas powered fluid dispenser
US20040074927A1 (en) * 2002-10-18 2004-04-22 Lafond Luc Marcel Portable gas powered fluid dispenser
US20040226968A1 (en) * 2003-03-04 2004-11-18 Lafond Luc Marcel Nozzle for dispensable viscous materials
US20090065532A1 (en) * 2004-11-05 2009-03-12 Luc Marcel Lafond Dispensing device with secondary reservoir
US20140209082A1 (en) * 2013-01-25 2014-07-31 Kee Action Sports I Llc Paintball marker with split body
US8950387B2 (en) * 2013-01-25 2015-02-10 Kee Action Sports I Llc Paintball marker with split body
US9518799B2 (en) 2013-01-25 2016-12-13 Gi Sportz Direct Llc Paintball marker with secure barrel engagement
US10627187B1 (en) * 2018-10-30 2020-04-21 Kuan Ting Lin Shooting controller of paintball gun
US10704859B2 (en) 2018-11-06 2020-07-07 Gi Sportz Direct Llc Compressed gas gun front grip having battery access panel

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Publication number Publication date
DE1428627C2 (de) 1974-08-01
GB1089778A (en) 1967-11-08
DE1428627A1 (de) 1971-09-16

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