US2789477A - Trigger device on multiple-gun mounts for automatic guns - Google Patents

Trigger device on multiple-gun mounts for automatic guns Download PDF

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Publication number
US2789477A
US2789477A US302055A US30205552A US2789477A US 2789477 A US2789477 A US 2789477A US 302055 A US302055 A US 302055A US 30205552 A US30205552 A US 30205552A US 2789477 A US2789477 A US 2789477A
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United States
Prior art keywords
trigger
arm
gun
guns
lever
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Expired - Lifetime
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US302055A
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English (en)
Inventor
Herlach Heinrich
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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Expired - Lifetime legal-status Critical Current

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    • 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
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/18—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms for multibarrel guns or multiple guns
    • F41A19/183—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms for multibarrel guns or multiple guns for multiple guns, i.e. a plurality of guns being actuated by a single firing mechanism

Definitions

  • the present invention relates to a trigger device on multiple-gun mounts for automatic guns.
  • the trigger device avoids this drawback, since at the end of a burst of fire the guns cease firing in the same sequence as :when they began and the function of the trigger deviceis independent of the speed with which the gunner operates the trigger member.
  • the trigger device is characterized by the fact that identically similar cams coupled to one another andin engagement with the trigger membersof the'guns are rotatably disposed on at least oneshaft in the gun cradle, that actuating means controlled by the gunners trigger lever and adapted to encompass the movement of the cams in one direction, and a device adapted to regulate the speed of said movement of the cams are provided, and that the cams are so rotationally offset inrespect of one another that on the operation of the trigger lever they, through the agency of the actuating. means and of the regulating device, operate the-trigger members of the guns successively at time intervals adapted to the firing sequence of the guns and release said trigger members again in the same sequence.
  • Figure 1 is a schematic lateral elevational view of the twin gun mount
  • Figure 2 is a sectional viewalong the line I I of the rear portion of the cradle
  • Figures 3-10 are schematic representations of parts of the trigger mechanism in various positions
  • Figure 11 shows the triggerlever of a gun with the actuating parallelogram of the trigger device
  • Figure 12 is a schematic view of the members actuating the trigger device
  • Figure 13 is a sectional view of the regulating cylinder
  • i V Figure 14 is a schematic representation,of the sequence in which the shells leave the two guns.
  • the twin gun mount shown schematically in Figure 1 has a base 1 on which the upper mount 2 is pivotally mounted.
  • the upper mount 2 carries the cradle 3 with the guns 4 by means of bars 50.
  • the cradle 3 is provided with a hollow shaft (not shown), the axis of which coincides with the axis of the trunnions 52 and which supports a sight arm 5 carrying the shoulder ring 6, the elevating gear '7 and the gun-sight 8.
  • the gunner freely controls the gun in train with the aid of the shoulder ring 6, which with the swivelling sight arm 5, automatically adapts itself to the gunners physique.
  • the trigger arm 9 Pivotally attached to the left side of the sight arm 5 is the trigger arm 9 which is operated by the gunners forearm and is connected to the trigger device on the cradle through a rod assembly 10, 27 and 53. As shown in Fig. 12 and as is described hereinafter, the trigger arm 9 is in driving connection with a rod 37 pivotally connected with the casing 54. The rod 37 is pivotally connected with one end of a further rod 10 (Fig. 1), the other end of which is attached to the sight arm 5 by any suitable means not shown in the drawings.
  • the guns 4 are resiliently mounted in the cradle and perform short recoil movements during firing, as shown by the arrow A in Figure 11, by which each gun is automatically cocked and fired after each shot, as long as its trigger lever 11 is maintained in its operative position.
  • the trigger levers 11 are pivotally mounted on theguns. In order to actuate the trigger levers alternately, the latter are connected with means which comprise a pair of rails 13, levers 14, a rotary shaft 13 and earns 17 and 19 which are mounted thereon.
  • a spring not shown
  • Each rail forms a hinged parallelogram together with the two levers 141, 15 and 141, 151, respectively, which are pivoted to the cradle 3.
  • the levers 14, 15 are swivelled upwards by the roller 16 connected to the lever 15, whereby the rail is lifted in the direction of the arrow B and the trigger lever of the gun is swivelled in the direction of the arrow C.
  • the movement of the rail is controlled by a rotary element formed by the trigger shaft 18, a disc 19 and two cams 17.
  • those parts of the trigger device which are duplicated for the two guns will be referred to by identical reference numerals, but the latter Will be completed by the addition of the index letters I and r according as the left or the right gun is concerned.
  • Figure 2 is a sectional view, parallel to the axes of the guns, of the rear portion of the cradle with the trigger device. .As will be seen from this figure, the cams 17 are secured to the trigger shaft 13 which traverses the cradle from side to side. As shown in Figure 4, the two cams are rotationally offset in respect of one another so that as the trigger shaft 13 rotates the rails 131 and 131' are not lifted simultaneously but successively.
  • a disk 19 provided with four studs 2%, parallel to the trigger shaft 13 is mounted on the latter, said studs engaging the pawls 21 and 22.
  • the pawls 21 and 22 are pivotally attached to the arms 23 and 24 respectively, which in turn are pivotally mounted on the cradle by means of the pivot pins 26, said pawls 21 and 22 being held in engagement with the studs by the tension spring 25.
  • the arms 23 and 24 are connected to one another by the ratchet teeth 23a, 24a, so that they at all times perform like movements in opposite directions.
  • the arm 24 is connected by a rod 27 to the rod assembly 10 and thereby to the trigger arm 9.
  • the rod 27 On the operation of the trigger arm 9 the rod 27 is moved in the direction of the arrow. As a result, the disk 19 is rotated a quarter of a turn in the clockwise direction by the pawl 22 engaging one of the studs 20.
  • the parts 2124 move in the opposite direction and the disk 19 is turned a further quarter-turn by the pawl 21.
  • only one of the two pawls 21, 22 is in engagement with the studs 2% of the disk 19, whilst the other slides along over the studs.
  • the trigger arm 9 is pivotally mounted on the pivot pin 28 on the sight arm 5.
  • the trigger arm 9, which grips the gunners forearm by two clamp members 9a, is formed integral with a threearmed lever 29.
  • a lever 31 designed approximately as a mirror image of the three-armed lever is mounted on a further pivot pin 33.
  • the arms 29b, 31b of the levers 29 and 31 respectively are interconnected by the rod 32, so that the pivotal movement of the trigger arm 9 on the lever 29 is transmitted to the lever 31.
  • the rod 37 is connected at one end through the rod assembly 10 to the rod 27 and thereby to the trigger shaft 18. At its other end, the rod 37 is connected by the link 38 to the piston rod 39 of a hydraulic cylinder 40.
  • the driver members 33 and 34 are provided with abutments 33a, 34a which come into engagement with the nebs 29c, 310 of the three-armed levers.
  • Two catches, 42 and 43 respectively, are pivotally mounted on the respective pivot pins 41 of the two driver members. Each of the catches 42 and 43 is designed as the mirror image of the other and the two are interconnected by a spring 44.
  • the swivelling movement of the catches 42 and 43 in the direction dictated by the pull of the spring is limited by abutments, 33a and 34a respectively, on the driver members.
  • the catches 42 and 43 have hook-shaped arms, 42a and 43a respectively, which are able to engage abutments, 5a and 511 respectively, rigidly secured to the sight arm.
  • the arms 29:; and 31a of the three-armed levers serve to bring the catches 42 and 43 respectively, out of engagement with the abutments 5a and 5b respectively.
  • the piston rod 39 has a piston member 39a which travels inside the cylinder 40.
  • the rear portion of the piston rod is hollow and accommodates within it the regulating screw 45 by means of which the cross-sectional area of flow passage at the bores 3% can be regulated. By such regulation the speed of movement of the rod 37, and thereby of the entire trigger device, can be accurately set.
  • the arm 31a of the lever 31 encounters, by its oblique face 31d, the corresponding stud 43c of the catch 43 and thereby moves said catch 43, against the action of the spring 44, out of engagement with the abutment 5b on the sight arm.
  • the driver member 34 swivels under the action of the previously tensioned spring 44 and consequently moves the rod 37 to the right through the agency of the stud 36.
  • the catch 42 has come into engagement with the abutment 5a and thus holds the drive-r member 33 in the right-hand position.
  • the two levers swivel in the opposite direction.
  • a t first the driver member 33, being coupled to the abutment 5a of the sight arm by the catch 42, remains in its position.
  • the driver member 34 on the other hand, under the impulsion of the arm 31c bearing against the abutment 34a, swivels until the catch 43 engages the abutment 5b of the sight arm, the spring .44 being tensioned again.
  • the arm 29a reaches its uppermost position and liberates the catch 42 from the abutment 5a, so that the driver member 33, under the impulsion of the spring 44, whips over to the left, its stud 35 pulling the rod 37 along with it.
  • the speed of the movement of the rod 37 is again controlled by the action of the hydraulic cylinder 40 and the piston 39.
  • the movement of the rod 36 is again transmitted by the rod assembly 10 to the rod 27 and causes the levers 23 and 24 to pivot in the opposite direction (cf. Figure 9).
  • the disk 19 is now turned, by the pawl 21, a further quarterturn in the same direction as before.
  • This quarter-turn of the disk 19 and of the trigger shaft 18 causes first the left rail 131 to be released, by the cam 171 acting through the follower roller 161, so that the left gun ceases firing.
  • the right rail 13;- also lowers, so that the trigger mechanism returns to the starting position shown in Figures 3 and 4.
  • What is achieved by this cycle of operations of the trigger device is that when the guns cease firing they do so in the same sequence and at the same time interval as when they began firing, so that at each burst of fire the two guns fire an equal number of rounds.
  • a trigger mechanism comprising a separate trigger lever for each gun, said trigger lever being movable from a position of rest to an operative position, and vice versa; means comprising a rotary element and operatively engaging said trigger levers to move them one after the other from the position of rest to the operative position and then in the same sequence from the operative position to the position of rest when the rotary element is rotated in one direction, an arm reciprocable between two end positions, and means interposed between said arm and said rotary element for transforming the reciprocation of said arm into a rotation of said rotary element in said one direction.
  • a trigger mechanism comprising a separate trigger lever for each gun, said trigger lever being movable from a position of rest to an operative position, and vice versa, means which comprise a rotary element and which operatively engage said trigger levers and move them one after the other from the position of rest to the operative position and then in the same sequence from the operative position to the position of rest when the rotary element is rotated in one direction, an arm reciprocable between two end positions, and a mechanism interposed between said arm and said rotary element and comprising means transforming the reciprocation of said arm into a rotation of said rotary element in said one direction, and means regulating the speed of rotation of said rotary element independently of the speed of reciprocation of said arm.
  • a trigger mechanism comprising a separate trigger lever for each gun, a transmission mechanism operatively connected with said trigger levers and comprising a rotary element, said transmission mechanism actuating said trigger levers one after the other when the rotary element is rotated in one direction, catch means for said transmission mechanism, said catch means comprising an immovable abutment and a catch normally engaging said abutment, an arm movable from a position of rest to an operative position, said arm engaging said catch in said operative position and moving it from said abutment to release said transmission mechanism, and spring means connected with said transmission mechanism and said arm and adapted to be tensioned when said arm is moved and being released by said transmission mechanism when said catch means are released.
  • a trigger mechanism comprising a separate trigger lever for each gun, said trigger lever being movable from a position of rest to an operative position, and vice versa; a transmission mechanism operatively connected with said trigger levers and comprising a rotary element, the rotation of said rotary element causing movement of said trigger levers one after the other from the position of rest to the operative position and then in the same sequence from the operative position to the position of rest when the rotary element are rotated in one direction, a step-by-step mechanism having a ratchet wheel operatively engaging said rotary element, a pair of driving pawls engaging said ratchet wheel, and a reciprocating arm operatively connected with said pawls whereby the ratchet Wheel is rotated stepwise in one direction by said pawls when said arm is reciprocated.
  • a trigger mechanism comprising a separate trigger lever for each gun, said trigger lever being movable from a position of rest to an operative position, and vice versa; a transmission mechanism operatively connected with said trigger levers and comprising a rotary element, the rotation of said rotary element causing movement of said trigger levers one after the other from the position of rest to the operative position and then in the same sequence from the operative position to the position of rest when the rotary element is rotated in one direction, a ratchet Wheel op eratively engaging said rotary element, a pair of driving pawls engaging said ratchet wheel, a reciprocatory arm operatively connected with said pawls, whereby the ratchet wheel is rotated stepwise in one direction by said pawls when said arm is reciprocated, an arm reciprocally swingable between a position of rest and an operative position, coupling means resiliently connecting said arms and reciprocating the first-mentioned arm when the secend-mentioned arm

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Transmission Devices (AREA)
US302055A 1951-08-08 1952-08-01 Trigger device on multiple-gun mounts for automatic guns Expired - Lifetime US2789477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH708496X 1951-08-08

Publications (1)

Publication Number Publication Date
US2789477A true US2789477A (en) 1957-04-23

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Application Number Title Priority Date Filing Date
US302055A Expired - Lifetime US2789477A (en) 1951-08-08 1952-08-01 Trigger device on multiple-gun mounts for automatic guns

Country Status (6)

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US (1) US2789477A (en, 2012)
BE (1) BE513354A (en, 2012)
CH (1) CH300985A (en, 2012)
DE (1) DE921790C (en, 2012)
FR (1) FR1065611A (en, 2012)
GB (1) GB708496A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110154979A1 (en) * 2009-12-31 2011-06-30 Kevin Joel Firing mechanism for high caliber artillery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3237728C2 (de) * 1982-10-12 1985-02-07 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Automatische Feuerwaffe mit Revolvertrommel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US430211A (en) * 1890-06-17 maxim
US2236335A (en) * 1937-05-05 1941-03-25 Anciens Ets Hotchkiss & Cie Firing mechanism for multiple guns
FR863885A (fr) * 1939-10-24 1941-04-11 Precision Moderne Dispositif de commande de la mise de feu pour armes automatiques jumelées
US2329668A (en) * 1940-11-16 1943-09-14 Curtiss Wright Corp Synchronous trigger control
CH239556A (de) * 1943-07-16 1945-10-31 Oerlikon Buehrle Ag Abzugsvorrichtung für automatische Feuerwaffen.
US2509734A (en) * 1946-09-17 1950-05-30 Vickers Armstrongs Ltd Double-barreled automatic gun
US2527715A (en) * 1945-06-06 1950-10-31 United Shoe Machinery Corp Firing control for multiple gun mounts

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US430211A (en) * 1890-06-17 maxim
US2236335A (en) * 1937-05-05 1941-03-25 Anciens Ets Hotchkiss & Cie Firing mechanism for multiple guns
FR863885A (fr) * 1939-10-24 1941-04-11 Precision Moderne Dispositif de commande de la mise de feu pour armes automatiques jumelées
US2329668A (en) * 1940-11-16 1943-09-14 Curtiss Wright Corp Synchronous trigger control
CH239556A (de) * 1943-07-16 1945-10-31 Oerlikon Buehrle Ag Abzugsvorrichtung für automatische Feuerwaffen.
US2527715A (en) * 1945-06-06 1950-10-31 United Shoe Machinery Corp Firing control for multiple gun mounts
US2509734A (en) * 1946-09-17 1950-05-30 Vickers Armstrongs Ltd Double-barreled automatic gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110154979A1 (en) * 2009-12-31 2011-06-30 Kevin Joel Firing mechanism for high caliber artillery

Also Published As

Publication number Publication date
FR1065611A (fr) 1954-05-28
DE921790C (de) 1954-12-30
GB708496A (en) 1954-05-05
CH300985A (de) 1954-08-31
BE513354A (en, 2012)

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