US2642779A - Firing mechanism for automatic guns - Google Patents

Firing mechanism for automatic guns Download PDF

Info

Publication number
US2642779A
US2642779A US620200A US62020045A US2642779A US 2642779 A US2642779 A US 2642779A US 620200 A US620200 A US 620200A US 62020045 A US62020045 A US 62020045A US 2642779 A US2642779 A US 2642779A
Authority
US
United States
Prior art keywords
firing mechanism
mounting plate
core
sear
plate
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
Application number
US620200A
Inventor
Trevaskis Henry
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB1987144A external-priority patent/GB597691A/en
Application filed by Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Application granted granted Critical
Publication of US2642779A publication Critical patent/US2642779A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/58Electric firing mechanisms
    • F41A19/59Electromechanical firing mechanisms, i.e. the mechanical striker element being propelled or released by electric means

Definitions

  • the present invention has for its primary object to provide an improved firing mechanism of the aforesaid kind which is of a relatively small depth thus rendering the improved firing mechanism particularly suited for guns which are required to be fitted within the wings of aircraft by permitting of the reduction of the dimensions of or the elimination of the external fairing which is generally required for enclosing such parts of the firing mechanism as it is not possible to contain within an aircraft wing.
  • an improved firing mechanism for automatic guns of the kind hereinbefore referred to comprises a mounting plate adapted to be secured to a fixed part of a gun adjacent to the sear, a firing assembly comprising a solenoid device and a trigger member, said solenoid device having a winding contained between end plates and a circumferential shell and a centrally movable core and said trigger member being disposed perpendicular to the axis of said core, which member is pivoted at one end on one of said end plates, bears on the sear at the other end and is connected to the core intermediate its end, and means to attach the firing assembly to the mounting plate.
  • the improved firing mechanism preferably incorporates an electrical resistance which is brought into circuit automatically to reduce the consumption of electric current required to hold the trigger device in the sear tripping position after a tripping has been effected.
  • the invention still further resides in the details of construction of the improved firing mechanism to be described hereinafter.
  • Fig. l is a longitudinal vertical section of a firing means embodying a preferred form of the invention in po sition relative to a part in a gun of the Hispano type shown in broken lines;
  • Fig. 2 is a plan of the firing mechanism illustrated in Fig. 1;
  • Fig. 3 is a vertical section on line 3-3 of Fig. 2 on a larger scale of certain elements of the firing mechanism;
  • Fig. 4 is a vertical section of the firing mechanism taken on line 4-4 of Fig. 1;
  • Fig. 5 is a vertical section taken on line 5--5 of Fig. 2;
  • Fig. 6 is a wiring diagram of the electric circuits of the firing mechanism
  • Fig. 7 is a perspective view of elements for retaining the firing mechanism on the gun, certain parts being shown lifted free and turned upwardly to illustrate the construction, and being shown partly in section;
  • Fig. 8 is a vertical section on a larger scale of the lower part of a magnetic core and closing blade and switch elements forming a part of the firing mechanism.
  • the improved firing mechanism incorporates a mounting plate I which is adapted to be screwed to the underside of the part of the gun housing the sear 8, Fig. 1.
  • This mounting plate 1 is adapted to have attached thereto in a manner to be described an assembly which i built round the end plates 9a, 9b of a solenoid device, the winding of the solenoid device being indicated by the reference numeral [0.
  • the upper end plate 9a is provided with an aperture within which is disposed a vertically movable core II.
  • the upper portion of this core i l is provided with a pair of longitudinal grooves I la which serve to accommodate the twin beams 12 of a trigger member, Figs. 1 and 2, which will be referred to henceforth compositely as the trigger member I2.
  • the trigger member I2 is fulcrumed at one end to a post 13a secured to the upper end plate 9a whilst the other ends which are rounded bear on complementary surfaces 80, forming part of the toe of the sear 8, Fig. 1.
  • the said trigger member I2 is pivotally connected to the core H by means of a transverse pin l3 the axis of which is located in the same plane as the vertical axis of the core I l.
  • I he lower end of the core H is serrated as at placement by means of a circlip I5, said cap I4 serving as an abutment for the lower end of a volute spring I6 the upper end of which abuts a metal plate IT
  • the spring I6 maintains the metal plate I 'I in contact with two electrical contacts I8a, I8b one of which namely I8a is in electrical connection with an end of the solenoid winding IO and with an end of a resistance winding I9, Fig. 6, Whilst the other contact namely I8b is in electrical connection with'the other end of the resistance winding I9 and with one of the poles of the current supply.
  • the metal plate I'l bridges the contacts I8a, IBb so that the circuit is completed through the mainwinding I'll only.
  • the metal plate I! is formed with an upstanding central portion I'Ia; which is axially arranged relatively to a pin which projects downwardly from the centre of the core I I.
  • the pin 20 and the adjacent end' of the upstanding central portion I'Id are normally spaced apart under the influence of a coil spring 2I which is arranged concentrically about the said pin 20 and which is located at one end within a recess in the core I I and at the other end within a recess in the lower end plate 9b, Fig. 8.
  • a plug and socket coupling connection with a source of electric power is made by a plug and socket coupling, the socket element of which is of the two pin type and is mounted on the rear end of the lower plate 9?) denoted by the reference 22.
  • This socket 22 is provided with a spring controlled catch 23, Figs. 1 and 5, which when the plug element (not shown) is in engagement with the said socket 22 engages within a recess in the plug element and locks the said plug element within the socket 22.
  • the catch 23 is disengaged from the said recess by moving the catch by means of the serrated finger grip 23a. 7
  • the forward end of the upper end plate 9a. is formed with a tapped cylindrical hole 9d which serves to accommodate a screw threaded sleeve 24, said sleeve having a head 240. which has a serrated periphery and which is of a greater diameter than the hole 9d.
  • the bottom of the bore in the sleeve 24 ' is closed by a disc 25 which serves as an abutment for the lower end of a coil spring 26 the upper end of which abuts the underside of a collar 21a formed intermediate the ends of a plunger 21, the lower portion of which depends within the upper portion of the said spring 26.
  • Theupper end of the plunger 21 tends to project above the plane of the mounting plate I under the influence of the spring 26 so that when the assembly is in position on a gun as illustrated in Figure 1 the plunger bears on the sear 8 adjacent to the heel thereof and so tends to maintain the sear in engagement with the breech bolt of the gun.
  • Adapted to bear on the head 24a of the screw threaded sleeve 24 are the noses at a pair of 4 thimbles 28 Figs. 1 and 3 the lower ends of which serve as abutments for coil springs 29 Fig. 4 which are arranged concentrically within the said thimbles 28.
  • the upper ends of the springs 29 abut the undersides of the arms of a wedging member 30 the wedge face 30a whereof co-coperates with a complementary wedge face Ia carried by the mounting plate 7.
  • the sleeve 24 When it is desired to detach the assembly from the gun the sleeve 24 is first unscrewed and the assembly is then loosely held by engagement of the faces 32 and 33. Complete disengagement of these faces is prevented by the shoulder on the upper end plate which abuts against the bufier block 3
  • Attachment of the assembly is effected by raising the block 3
  • the assembly is then loosely held between the faces 32' and the block and can be rigidly attached to the mounting plate by screwing up the sleeve 24 as described above.
  • the firing mechanism operates in the following manner:
  • the pin 20 comes into contact with the upstanding portion I10. and presses the said portion Ila and the associated plate ll downwardly thus allowing the spring contacts I, and Nb to break contact so that the resistance winding I9 is brought into circuit toreduce the amount of the current flowing through the winding II).
  • the reduction in. current consumption in the embodiment described is of the order of from 10 amperes to 3 amperes, but it will be understood that a current of the latterorder is. sufiicient to maintain the core II' in the retracted position once the initial retraction has been eiiected thus permitting of automatic operation of the weapon at a reduced-current consumption whilst the firing circuit is completed.
  • the invention provides a firing assembly which is of small depth thus rendering it of particular advantage for guns which are required to be mounted in the wings of aircraft since either no fairing at all will be required as no part of the firing mechanism will be exposed or else a smaller fairing will be required than has been necessary heretofore as a smaller part only will be required to be enclosed by such a fairing.
  • the firing mechanism can be atached to a gun and detached as a unit assembly with great facility.
  • a firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof, a firing asembly comprising an upper and lower plate and a shell between said plates to form a solenoid casing, a solenoid winding within said casing, a movable core extending from above said mounting plate through said upper casing plate and axially within said winding, a trigger member disposed perpendicularly to the axis of said core and pivoted at one end to said upper plate and extending to engage a sear at its other end and secured to said core intermediate said ends, said mounting plate and upper plate having complementary undercut surfaces to hold them into engagement, said mounting plate having a second surface inclined from the vertical in a direction opposite to the incline of said undercut surface, a movable wedging member having a surface complementary to said second inclined surface and a spring pressing said wedge shaped member into engagement with said inclined surface.
  • a firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof, a. firing assembly comprising an upper and lower plate and a shell between said plates to form a solenoid casing, a solenoid winding within said casing, a movable core extending from above said mounting plate through said upper casing plate and axially within said winding, a trig er member disposed perpendicularly to the axis of said core and pivoted at one end to said upper plate and extending to engage a scar at its other end and secured to said core intermediate said ends, said mounting plate and upper plate having complementary undercut surfaces to hold them into engagement, said mounting plate having a face inclined in a direction opposite to that of said undercut surfaces, a tapped orifice in said mounting plate, a screw threaded in said orifice, a plunger slidably mounted on said firing "assembly having an inclined face complementary 6 to that on said mounting plate and a spring confined between said
  • a firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof, a firing assembly comprising an upper and lower plate and a shell between said plates to form a solenoid casing, a solenoid winding within said casing, a movable core extending from above said mounting plate through said upper casing plate and axially within said winding, a trigger member disposed perpendicularly to the axis of said core and pivoted at one end to said upper plate and extending to engage a sear at its other end and secured to said core intermediate said ends, said mounting plate and upper plate having complementary undercut surfaces to hold them into engagement, said mounting plate having a face inclined in a direction opposite to the incline of the undercut surface of said mounting plate, a tapped orifice in said mounting plate, a screw threaded therein and a plunger on said firing assembly and actuated by said screw against said inclined surface of said mounting plate.
  • a firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof and having an undercut face, a firing assembly comprising a solenoid device and trigger member, said firing assembly having a complementary undercut face to engage the undercut face of said mounting plate, said mounting plate havin a wedging face inclined in a direction opposite to that of its undercut face, a movable wedge on said firing assembly having an inclined surface complementary to the wedging face of said mounting plate and spring pressed means to move said movable wedge shaped member into engagement with said inclined face.
  • the firing mechanism of claim 4 comprising a tapped orifice in said mounting plate, a screw threaded therein, a plunger mounted on said screw and spring means for pressin said plunger into engagement with said sear to move said sear into bolt retaining position, said screw also being positioned to engage said spring means acting on said wedge shaped member.

Description

June 23, 1953 H. TREVASKIS FIRING MECHANISM FOR AUTOMATIC suns 3 Sheets-Sheet 1 Filed Oct. 4, 1945 .||IV ll,
INVENTOR. /7E/VEY 7'95 VASk/S mwww June 23, 1953 H. TREVASKIS 2,642,779
FIRING MECHANISM FOR AUTOMATIC GUNS Filed Oct. 4, 1945 3 Sheets-Sheet 2 O O O IN VEN TOR. flay/er 7% 1445/05 ,4 Tram 5y June 23, 1953 H. TREVASKIS FIRING MECHANISM FOR AUTOMATIC GUNS 5 Sheets-Sheet 3 Filed Oct. 4, 1945 JNVENTOR. flwey Kama/(w BY Arme/uey I /ia. f7
Patented June 23, 1953 UNITED STATES ATENT OFFICE FIRING MECHANISM FOR AUTOMATIC GUNS Application October 4, 1945, Serial No. 620,200 In Great Britain October 14, 1944 My invention has reference to improvements in or relating to firing mechanism for automatic guns more especially guns of the Hispano type and is concerned particularly with firing mechanism for such guns of the kind in which the tripping of the sear is effected through .the agency of an electromagnetically actuated trigger device.
The present invention has for its primary object to provide an improved firing mechanism of the aforesaid kind which is of a relatively small depth thus rendering the improved firing mechanism particularly suited for guns which are required to be fitted within the wings of aircraft by permitting of the reduction of the dimensions of or the elimination of the external fairing which is generally required for enclosing such parts of the firing mechanism as it is not possible to contain within an aircraft wing.
Further objects of the invention are to provide a firing mechanism of the aforesaid kind which is economical in current consumption and which can readily be attached to or removed from a gun as a unit assembly.
According to the invention an improved firing mechanism for automatic guns of the kind hereinbefore referred to comprises a mounting plate adapted to be secured to a fixed part of a gun adjacent to the sear, a firing assembly comprising a solenoid device and a trigger member, said solenoid device having a winding contained between end plates and a circumferential shell and a centrally movable core and said trigger member being disposed perpendicular to the axis of said core, which member is pivoted at one end on one of said end plates, bears on the sear at the other end and is connected to the core intermediate its end, and means to attach the firing assembly to the mounting plate.
Moreover, according to the invention the improved firing mechanism preferably incorporates an electrical resistance which is brought into circuit automatically to reduce the consumption of electric current required to hold the trigger device in the sear tripping position after a tripping has been effected.
The invention still further resides in the details of construction of the improved firing mechanism to be described hereinafter.
The invention will now be described with particular reference to the accompanying drawings which illustrate the improved firing mechanism as adapted for use with a 20 mm. Hispano automatic gun.
The various features of my invention are illustrated, by way of example, in theaccom- Claims. (Cl. 89135) panying drawings in which, Fig. l is a longitudinal vertical section of a firing means embodying a preferred form of the invention in po sition relative to a part in a gun of the Hispano type shown in broken lines;
Fig. 2 is a plan of the firing mechanism illustrated in Fig. 1;
Fig. 3 is a vertical section on line 3-3 of Fig. 2 on a larger scale of certain elements of the firing mechanism;
Fig. 4 is a vertical section of the firing mechanism taken on line 4-4 of Fig. 1;
Fig. 5 is a vertical section taken on line 5--5 of Fig. 2;
Fig. 6 is a wiring diagram of the electric circuits of the firing mechanism;
Fig. 7 is a perspective view of elements for retaining the firing mechanism on the gun, certain parts being shown lifted free and turned upwardly to illustrate the construction, and being shown partly in section;
Fig. 8 is a vertical section on a larger scale of the lower part of a magnetic core and closing blade and switch elements forming a part of the firing mechanism.
In the drawings like numerals of reference indicate similar parts in the several views.
As illustrated the improved firing mechanism incorporates a mounting plate I which is adapted to be screwed to the underside of the part of the gun housing the sear 8, Fig. 1. This mounting plate 1 is adapted to have attached thereto in a manner to be described an assembly which i built round the end plates 9a, 9b of a solenoid device, the winding of the solenoid device being indicated by the reference numeral [0.
The upper end plate 9a. is provided with an aperture within which is disposed a vertically movable core II. The upper portion of this core i l is provided with a pair of longitudinal grooves I la which serve to accommodate the twin beams 12 of a trigger member, Figs. 1 and 2, which will be referred to henceforth compositely as the trigger member I2. The trigger member I2 is fulcrumed at one end to a post 13a secured to the upper end plate 9a whilst the other ends which are rounded bear on complementary surfaces 80, forming part of the toe of the sear 8, Fig. 1. Intermediate its ends and at a position which is more remote from the fulcrum than from the sear engaging end the said trigger member I2 is pivotally connected to the core H by means of a transverse pin l3 the axis of which is located in the same plane as the vertical axis of the core I l.
I he lower end of the core H is serrated as at placement by means of a circlip I5, said cap I4 serving as an abutment for the lower end of a volute spring I6 the upper end of which abuts a metal plate IT The spring I6 maintains the metal plate I 'I in contact with two electrical contacts I8a, I8b one of which namely I8a is in electrical connection with an end of the solenoid winding IO and with an end of a resistance winding I9, Fig. 6, Whilst the other contact namely I8b is in electrical connection with'the other end of the resistance winding I9 and with one of the poles of the current supply. Normally and as shown in Figs. 4, 6 and 8 the metal plate I'l bridges the contacts I8a, IBb so that the circuit is completed through the mainwinding I'll only.
The metal plate I! is formed with an upstanding central portion I'Ia; which is axially arranged relatively to a pin which projects downwardly from the centre of the core I I.
The pin 20 and the adjacent end' of the upstanding central portion I'Id are normally spaced apart under the influence of a coil spring 2I which is arranged concentrically about the said pin 20 and which is located at one end within a recess in the core I I and at the other end within a recess in the lower end plate 9b, Fig. 8.
Connection with a source of electric power is made by a plug and socket coupling, the socket element of which is of the two pin type and is mounted on the rear end of the lower plate 9?) denoted by the reference 22. This socket 22 is provided with a spring controlled catch 23, Figs. 1 and 5, which when the plug element (not shown) is in engagement with the said socket 22 engages within a recess in the plug element and locks the said plug element within the socket 22. When it is desired to remove the plug element the catch 23 is disengaged from the said recess by moving the catch by means of the serrated finger grip 23a. 7
The forward end of the upper end plate 9a. is formed with a tapped cylindrical hole 9d which serves to accommodate a screw threaded sleeve 24, said sleeve having a head 240. which has a serrated periphery and which is of a greater diameter than the hole 9d.
The bottom of the bore in the sleeve 24 'is closed by a disc 25 which serves as an abutment for the lower end of a coil spring 26 the upper end of which abuts the underside of a collar 21a formed intermediate the ends of a plunger 21, the lower portion of which depends within the upper portion of the said spring 26. Theupper end of the plunger 21 tends to project above the plane of the mounting plate I under the influence of the spring 26 so that when the assembly is in position on a gun as illustrated in Figure 1 the plunger bears on the sear 8 adjacent to the heel thereof and so tends to maintain the sear in engagement with the breech bolt of the gun. a
Adapted to bear on the head 24a of the screw threaded sleeve 24 are the noses at a pair of 4 thimbles 28 Figs. 1 and 3 the lower ends of which serve as abutments for coil springs 29 Fig. 4 which are arranged concentrically within the said thimbles 28. The upper ends of the springs 29 abut the undersides of the arms of a wedging member 30 the wedge face 30a whereof co-coperates with a complementary wedge face Ia carried by the mounting plate 7.
. When the sleeve 24 is screwed into the mounting plate the head 24a of the sleeve compresses the springs 29, and the wedging member 30 is thereby urged upwards and forces the bevelled edges 32 of the mounting plate and the comple- V mentary undercut faces 33 of the upper end plate into engagement, thus holding the firing assem- V "bly rigidly against the mounting plate.
When it is desired to detach the assembly from the gun the sleeve 24 is first unscrewed and the assembly is then loosely held by engagement of the faces 32 and 33. Complete disengagement of these faces is prevented by the shoulder on the upper end plate which abuts against the bufier block 3| at 35. This block can be raised about 0.4 by pulling .out of engagement a lock 34 forming part of the construction of the gun,
and when this is done sufficient clearance is given between the shoulder and the block for the undercut faces 33 to slide out of engagement with faces 32. f
Attachment of the assemblyis effected by raising the block 3|, sliding the faces 33'into engagement with the faces 32 and allowing the block to return to position. The assembly is then loosely held between the faces 32' and the block and can be rigidly attached to the mounting plate by screwing up the sleeve 24 as described above.
The firing mechanism operates in the following manner:
When it is desired to fire a gun the usual contol (not shown) is manipulated to close the circuit through the winding Ill. This results in the energisation of the solenoid device and as a consequence causes the core II to be drawn downwardly. Downward movement of the core II turns the trigger member I2 about its fulcrum and causes the nose of the said member I2 to bear on the sear Band to trip the said sear out of engagement with the breech bolt thus permitting the weapon to fire. v
During the downward movement of the core I I the pin 20 comes into contact with the upstanding portion I10. and presses the said portion Ila and the associated plate ll downwardly thus allowing the spring contacts I, and Nb to break contact so that the resistance winding I9 is brought into circuit toreduce the amount of the current flowing through the winding II). The reduction in. current consumption in the embodiment described is of the order of from 10 amperes to 3 amperes, but it will be understood that a current of the latterorder is. sufiicient to maintain the core II' in the retracted position once the initial retraction has been eiiected thus permitting of automatic operation of the weapon at a reduced-current consumption whilst the firing circuit is completed.
When the firing control is released the core II and hence the trigger member I2 are moved to the positions shown in Figure 1 and the sear 8 moves to engage the breech bolt under the infiuence of the spring pressed-plunger 2-1.
It will be appreciated that by arranging for the trigger member I2 to be mounted horizon-- tall-y with the sear engaging endmore remote from its pivotthanitspoint of connection to the moving core H of the solenoid device a full displacement of the sear engaging extremity is obtained for a reduced displacement of the moving core I I relatively to that which is necessitated in prior practice, so that a solenoid of lesser depth is required.
Thus the invention provides a firing assembly which is of small depth thus rendering it of particular advantage for guns which are required to be mounted in the wings of aircraft since either no fairing at all will be required as no part of the firing mechanism will be exposed or else a smaller fairing will be required than has been necessary heretofore as a smaller part only will be required to be enclosed by such a fairing.
In addition it will be appreciated that the firing mechanism can be atached to a gun and detached as a unit assembly with great facility.
7 Having described my invention-what I claim is:
1. A firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof, a firing asembly comprising an upper and lower plate and a shell between said plates to form a solenoid casing, a solenoid winding within said casing, a movable core extending from above said mounting plate through said upper casing plate and axially within said winding, a trigger member disposed perpendicularly to the axis of said core and pivoted at one end to said upper plate and extending to engage a sear at its other end and secured to said core intermediate said ends, said mounting plate and upper plate having complementary undercut surfaces to hold them into engagement, said mounting plate having a second surface inclined from the vertical in a direction opposite to the incline of said undercut surface, a movable wedging member having a surface complementary to said second inclined surface and a spring pressing said wedge shaped member into engagement with said inclined surface.
2. A firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof, a. firing assembly comprising an upper and lower plate and a shell between said plates to form a solenoid casing, a solenoid winding within said casing, a movable core extending from above said mounting plate through said upper casing plate and axially within said winding, a trig er member disposed perpendicularly to the axis of said core and pivoted at one end to said upper plate and extending to engage a scar at its other end and secured to said core intermediate said ends, said mounting plate and upper plate having complementary undercut surfaces to hold them into engagement, said mounting plate having a face inclined in a direction opposite to that of said undercut surfaces, a tapped orifice in said mounting plate, a screw threaded in said orifice, a plunger slidably mounted on said firing "assembly having an inclined face complementary 6 to that on said mounting plate and a spring confined between said screw and said plunger to press said plunger against said inclined face.
3. A firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof, a firing assembly comprising an upper and lower plate and a shell between said plates to form a solenoid casing, a solenoid winding within said casing, a movable core extending from above said mounting plate through said upper casing plate and axially within said winding, a trigger member disposed perpendicularly to the axis of said core and pivoted at one end to said upper plate and extending to engage a sear at its other end and secured to said core intermediate said ends, said mounting plate and upper plate having complementary undercut surfaces to hold them into engagement, said mounting plate having a face inclined in a direction opposite to the incline of the undercut surface of said mounting plate, a tapped orifice in said mounting plate, a screw threaded therein and a plunger on said firing assembly and actuated by said screw against said inclined surface of said mounting plate.
4. A firing mechanism for automatic guns which comprises a mounting plate to be secured to a fixed part of a gun adjacent to the sear thereof and having an undercut face, a firing assembly comprising a solenoid device and trigger member, said firing assembly having a complementary undercut face to engage the undercut face of said mounting plate, said mounting plate havin a wedging face inclined in a direction opposite to that of its undercut face, a movable wedge on said firing assembly having an inclined surface complementary to the wedging face of said mounting plate and spring pressed means to move said movable wedge shaped member into engagement with said inclined face.
5. The firing mechanism of claim 4 comprising a tapped orifice in said mounting plate, a screw threaded therein, a plunger mounted on said screw and spring means for pressin said plunger into engagement with said sear to move said sear into bolt retaining position, said screw also being positioned to engage said spring means acting on said wedge shaped member.
HENRY TREVASKIS.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 922,268 Dawson et al May 18, 1909 946,215 Geissinger Jan. 11, 1910 2,331,942 Turnbull Oct. 19, 1943 2,337,145 Albree Dec. 21, 1943 2,344,178 Sparrow Mar. 14, 1944 2,380,262 Quinnell et a1 July 10, 1945 FOREIGN PATENTS Number Country Date 312,236 Germany May 21, 1919
US620200A 1944-10-14 1945-10-04 Firing mechanism for automatic guns Expired - Lifetime US2642779A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1987144A GB597691A (en) 1944-10-14 Improvements in or relating to firing mechanism for automatic guns

Publications (1)

Publication Number Publication Date
US2642779A true US2642779A (en) 1953-06-23

Family

ID=10136571

Family Applications (1)

Application Number Title Priority Date Filing Date
US620200A Expired - Lifetime US2642779A (en) 1944-10-14 1945-10-04 Firing mechanism for automatic guns

Country Status (2)

Country Link
US (1) US2642779A (en)
FR (1) FR950105A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779247A (en) * 1954-09-28 1957-01-29 Jr Harry E Pinkerton Sear mechanism for a firearm
US2826122A (en) * 1955-10-10 1958-03-11 George H Bornheim Firing device for a revolver-type automatic gun with a recoil unit
US2868082A (en) * 1955-10-13 1959-01-13 Robert G Nutting Drop lock bolt for gun
US2935001A (en) * 1955-06-07 1960-05-03 Magnavox Co Gun firing solenoid

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE312236C (en) *
US922268A (en) * 1905-01-05 1909-05-18 Vickers Sons & Maxim Ltd Firing mechanism for breech-loading ordnance.
US946215A (en) * 1909-04-12 1910-01-11 Geissinger Regulator Company Electromagnetic device.
US2331942A (en) * 1940-12-05 1943-10-19 Norman K Turnbull Firing mechanism
US2337145A (en) * 1940-05-09 1943-12-21 Albree George Norman Firearm
US2344178A (en) * 1941-11-06 1944-03-14 Honeywell Regulator Co Electromagnetic device
US2380262A (en) * 1941-05-10 1945-07-10 Magnavox Co Solenoid initiating mechanism for machine guns or other devices

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE312236C (en) *
US922268A (en) * 1905-01-05 1909-05-18 Vickers Sons & Maxim Ltd Firing mechanism for breech-loading ordnance.
US946215A (en) * 1909-04-12 1910-01-11 Geissinger Regulator Company Electromagnetic device.
US2337145A (en) * 1940-05-09 1943-12-21 Albree George Norman Firearm
US2331942A (en) * 1940-12-05 1943-10-19 Norman K Turnbull Firing mechanism
US2380262A (en) * 1941-05-10 1945-07-10 Magnavox Co Solenoid initiating mechanism for machine guns or other devices
US2344178A (en) * 1941-11-06 1944-03-14 Honeywell Regulator Co Electromagnetic device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779247A (en) * 1954-09-28 1957-01-29 Jr Harry E Pinkerton Sear mechanism for a firearm
US2935001A (en) * 1955-06-07 1960-05-03 Magnavox Co Gun firing solenoid
US2826122A (en) * 1955-10-10 1958-03-11 George H Bornheim Firing device for a revolver-type automatic gun with a recoil unit
US2868082A (en) * 1955-10-13 1959-01-13 Robert G Nutting Drop lock bolt for gun

Also Published As

Publication number Publication date
FR950105A (en) 1949-09-19

Similar Documents

Publication Publication Date Title
US4134223A (en) Electrical trigger mechanism for firearms
US3250034A (en) Electric gun firing mechanism
US2642779A (en) Firing mechanism for automatic guns
JPS6465373A (en) Magnetic detent steering lever and stack remote control valve
DE2927099A1 (en) ELECTRIC RELEASE DEVICE FOR FIREARMS
EP2048468A2 (en) Remote control unit for machine guns
US2847557A (en) Stud welding circuit
GB1202901A (en) Hand weapon
ES8308151A1 (en) Rotary operated electric switch with automatic return in the case of voltage failure.
US2331942A (en) Firing mechanism
DE3470801D1 (en) Trigger mechanism for small arms
US2471806A (en) Thermostatic electric switch
US2380611A (en) Solenoid initiating mechanism for machine guns
GB1111510A (en) Device for remote actuation of automatic firearms
US2935001A (en) Gun firing solenoid
GB1457698A (en) Firing and trigger mechanism for self-loading match pistol
US2447891A (en) Pivoted breech block pistol with a three-pronged biasing spring
US2368307A (en) Solenoid firing mechanism for machine guns
US2779247A (en) Sear mechanism for a firearm
DE863612C (en) Electric ignition device for firearms with locking piece movable transversely to the barrel axis
DE681010C (en) Electric circuit breaker
US2995988A (en) Dual rate sear mechanism
US2150933A (en) Bomb release mechanism
CN214672458U (en) High safe and reliable's circuit breaker and isolation interlock
GB1154234A (en) Improvements in or relating to Automatic Guns