US1803349A - Automatic firearm - Google Patents

Automatic firearm Download PDF

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Publication number
US1803349A
US1803349A US407522A US40752229A US1803349A US 1803349 A US1803349 A US 1803349A US 407522 A US407522 A US 407522A US 40752229 A US40752229 A US 40752229A US 1803349 A US1803349 A US 1803349A
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United States
Prior art keywords
breech bolt
sear
lever
firing pin
pin
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
US407522A
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English (en)
Inventor
Pfeiffer Christian
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.)
Colts Manufacturing Co Inc
Original Assignee
Colts Manufacturing Co Inc
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
Application filed by Colts Manufacturing Co Inc filed Critical Colts Manufacturing Co Inc
Priority to US407522A priority Critical patent/US1803349A/en
Priority to GB502/31A priority patent/GB370900A/en
Priority to DEC44455D priority patent/DE576421C/de
Priority to NL56157A priority patent/NL36959C/xx
Priority to BE379093D priority patent/BE379093A/xx
Priority to FR715554D priority patent/FR715554A/fr
Application granted granted Critical
Publication of US1803349A publication Critical patent/US1803349A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/36—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing
    • F41A3/44—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having sliding locking elements, e.g. balls, rollers
    • 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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/46—Trigger safeties, i.e. means for preventing trigger movement
    • 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
    • F41A19/10—Triggers; Trigger mountings
    • 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
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • 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
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • F41A19/31—Sear arrangements therefor
    • 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
    • F41A35/00—Accessories or details not otherwise provided for
    • F41A35/06—Adaptation of guns to both right and left hand use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/02—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/02—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated
    • F41A5/08—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated having an accelerator lever acting on the breech-block or bolt during the opening movement
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/29—Feeding of belted ammunition
    • F41A9/32—Reciprocating-slide-type belt transporters
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/29—Feeding of belted ammunition
    • F41A9/32—Reciprocating-slide-type belt transporters
    • F41A9/33—Reciprocating-slide-type belt transporters with cartridge stripping means
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/37—Feeding two or more kinds of ammunition to the same gun; Feeding from two sides

Definitions

  • the present invention is particularly applicable to a machine gun constructed as shown and described in Patent No. 1,293,021, issued February 4, 1919, to John M. Browning, but it will be understood that the invention is 'not necessarily so limited.
  • An automatic machine gun of this general class is frequently required to be mounted in a relatively fixed position on an airplane and fired in synchronism with the rotation of the propeller so as to fire between the propeller blades without hitting them.
  • Various synchronizing mechanisms and trigger motors have been devised for controlling the firing of guns mounted as described and a gun embodying the present invention is adapted to be used with a synchronizing mechanism and trigger motor of known design.
  • One object of the present invention is to provide a gun so constructed that the trigger motor can be applied thereto at either side.
  • the construction of the firing mechanism of the gun is such that by merely reversing the positions of certain parts the gun can be adapted for operation by means of a trigger motor at either side.
  • a further object of the invention is to provide improved details of construction which facilitate the adaptation of the gun for feeding the cartridge in either direction as required.
  • Fig. 1 is a plan view of a machine gun embodying the invention, the front end of the barrel and barrel jacket being broken away.
  • Fig. 2 is a side view of the parts shown in Fig. 1.
  • Fig.3 is a rear end view.
  • Fig. 4 is a perspective view ShOWiHg the Eracket for guiding the manual operating
  • Fig. 5 is a perspective view showing a trigger motor that is interchangeable with the bracket shown in Fig. 4.
  • Fig. ,6 is a vertical longitudinal sectional view on an enlarged scale.
  • Fig. 7 is a view similar to Fig. 6 but showing the parts in different relative positions.
  • Fig. 8 is a fragmentary rear view on an enlarged scale of the breech bolt and parts carried thereby, this view being taken approximately along the line 8-8 of Fig. 6.
  • Fig. 9 is a fragmentary vertical sectional view taken along the line 99 of Fig. 8. r
  • Fig. 10 is a fragmentary horizontal sectional View taken along the line 10-10 of Fig. 8.
  • Fig. 11 is a viewsimilar to Fig. 8 but showing some of the parts in different positions.
  • Fig. 12 is a view similar to Fig. 10 but showing the parts in the same positions as in Fig. 11.
  • Fig. 13 is a perspective view of the sear.
  • Figs. 14 and 15 are rear and side views respectively of the sear operating lever.
  • Figs. 16, 17 and 18 are top, rear and side views respectively of the spring plunger device cooperating with the sear lever.
  • Figs. 19 and 20 are plan and side views respectively of the pin lever for holding the plunger device in place.
  • Fig. 21 is'a fragmentary longitudinal sectional view similar to Fig. 6, but showing a open positions.
  • Fig. 22 is a rear view of the manual firing mechanism as shown in Fig. 21.
  • Figs. 23 and 24 are rear and side views respectively of the trigger.
  • Figs. and 26 are rear and side views respectively of the housing for the trigger lock.
  • Fig. 27 is a perspective view of the trigger lock. 4
  • Fig. 28 is a view showing in detail the parts of the screw and detent device forming parts of the trigger lock mechanism.
  • F ig. 29 is a fragmentary plan View showing the feed mechanism.
  • Fig. is a View similar to Fig. 29, but showing certain parts of the feed mechanism in reversed positions.
  • Fig. 31 is a transverse sectional view taken along the line 3131 of Fig. 29.
  • Fig. 32 is a transverse sectional view taken along the line 32-32 of Fig. 30.
  • Figs. 33, 34 and are plan, rear and right side views respectively of the feed slide.
  • Figs. 36 and .37 are plan and rear views respectively of the feed pawl.
  • Figs. 38 and 39 are plan and rear views respectively of the feed pawl extension.
  • Figs. and 41 are plan and side views respectively of the feed lever.
  • the machine gun as shown in the drawings comprises a breech casing 1 which contains the breech mechanism, this casing being rectangular in form and having two side plates 2, 2 connected at the front with a trunnion block 3.
  • the rear part of the bottom of the casing is closed by a transverse bottom plate 4 and the rear part of the top of the casing is closed by the top plate 5.
  • a cover 6 pivoted at 7 so that it can be swung upward to expose the interior parts.
  • a spring plunger 7 engages notches in the hub of the cover.
  • the cover 6 is normally held closed by means of a latch at 8 operated by a finger piece 8.
  • the casing is closed at the rear by means of a plate 9 which is vertically movable in grooves (not shown) formed in the two side plates 2, 2.
  • the plate 9 is held in place by a manually releasable pivoted latch 10.
  • the plate 9 carries a buffer mechanism indicated as an entirety by 11. This buffer mechanism is not shown in detail as it constitutes no part of the present invention.
  • a barrel 12 Projecting from the casing at the front is a barrel 12 which upon recoil is movable rear; ward to a limited extent. tends through a bearing aperture 13 in the trunnion block 3 and it has another hearing at or near the forward end of the barrel jacket 14, the said jacket being carried by a flange 15 formed on the trunnion block.
  • a barrel extension 16 Connected with the barrel 12 at the rear end thereof and The barrel ex eoaeaa bodily movable therewith is a barrel extension 16.
  • This barrel extension comprises two integrally formed side members, one of which, 16, is clearly shown in Figs. 6 and 7. These two side members are connected at the rear by a recessed cross member 16".
  • breech bolt 17 Mounted on the barrel extension for longitudinal movement independently thereof is a breech bolt 17.
  • This breech bolt is provided at its opposite sides with longitudinal tongues 17 ,17 adapted to enter longitudinal grooves 16 formed in the side members 16 of the barrel extension.
  • the rear part of the breech bolt 17 is extended transversely, as clearly shown in Fig. 10 so as to occupy the entire width of the casing between the two side plates 2, 2.
  • a reaction spring 18 is provided which extends into a longitudinal opening 19 in the breech bolt and which tends to hold the breech bolt in its forward position. Upon recoil this reaction spring is compressed and immediately tends to return the breech bolt in the forward direction.
  • a lock frame 20 comprising two side members lying closely adjacent the side walls 2. 2 of the casing.
  • a transverse block 21 secured to the bottom wall .4.
  • the lock bolt 22 is held in its upper locking position by means of the transverse block 21, but when the barrel extension and breech bolt move rearward, the said lock bolt is moved downward by means of cam surfaces 24 formed at the forward ends of the lock frame 20. This permits the breech bolt to move rearward independently of the barrel extension as clearly shown in Fig. 7. lVhen the parts are returned to their forward positions the lock bolt 22 is again moved to locking position by means of the cam surface 25 on the block 21.
  • a rock lever or accelerator 26 having a convex forward facing surface adapted to be engaged by the rear surface of the barrel extension.
  • the upper end of the accelerator engages the surface 27 on the breech bolt and the accelerator thus serves to assist or accelerate the rearward movement of the bolt, acting as a means for transmitting the energy of the relatively heavy barrel extension and barrel to the lighter breech bolt.
  • the surface 27 is separated from the accelerator and the bottom of the breech bolt moves over the accelerator thus holding it in its rearmost position as clearly shown in Fig. 7.
  • an extension 26 thereof engages an extension 16 on the barrel extension to positively hold the said barrel extension in its rearmost position until such time as the breech bolt moves forward.
  • a slidable rod 28 Carried by the lock frame 20 is a slidable rod 28 surrounded by a coil spring 29 tend ing to move the r'od toward the front.
  • the extension 16 on the "barrel extension abuts against the front end of the rod and the spring 29 thusv serves to resist rearward movement of the barrel extension and to assist forward movement thereof.
  • the breech bolt 17 has a centrallongitudinal opening therein adapted to receive the firing pin 30.
  • the firing pin 30 is hollow having a spring 31 therein which abuts at its rear against a transverse pin extending through a slot 30 in the -firing pin.
  • the spring 31 thus serves to bias the firing pin for movement in the forward direction.
  • Pivotally mounted on the breech bolt is a cocking lever 32 mounted on a removable transverse pin 32. The upper end of the cocking lever extends into a suitable slot in a block 33 secured to the top wall 5 of the casing, and the lower end extends into the slot 30 in the firing pin.
  • the cooking lever is so formed and positioned that, when the breech bolt moves rearward, the cocking lever is turned in the clockwise direction and serves to move the firing pin relatively rearward to its cocked position where it is engaged by the sear to be presently described.
  • the movements of the barrel extension and breech bolt and other parts as described ordinarily occur automatically as the result of the recoil action of.the firearm.
  • means is provided for operating .the parts manually.
  • One of the side walls 2 of the casing is provided with a longitudinal slot 37 and preferably there is such a slot in each side wall.
  • a pin 38 is provided which may be inserted through either slot into a suitable transverse hole in the breech bolt.
  • the pin 38 is held in place by a shoulder (not shown) which engages the corresponding side plate at the edges of the slot 37.
  • the slots 37 are enlarged at the rear to'permit the removal or insertion of the pin.
  • theside wall 2 of the casing is also provided with openings 39 and 39 adapted to receive a bracket 40.
  • the bracket 40 has a beveled surface at the front adapted to engage a similarly beveled surface at the front edge of the opening 39 and the bracket is further provided with a bolt 41 having an enlarged head with a beveled surface at the rear adapted to engage a beveled surface at the rear of the opening 39*.
  • the bracket 40 is proyided with guide slots 40 and 40 each adapted to receive a longitudinally extending bar 42.
  • the bar 42 is guided in part by the said guide 40' and it is also guided in part by the corresponding one of two other brackets 43, 43 permanently secured to the casing.
  • Each of the brackets 43 is provided with a spring plunger 43 adapted to enter a recess in the bar 42 to releasably hold the bar in its forward position.
  • a stop 42 on the bar 42 serves to limit forward movement.
  • the bar 42 is provided with a slot 44 through which the pin 38 extends and the said bar is provided at its rear with a suitable handle 45.
  • the bracket 40 has two guide slots 40 and 40 and is so constructed as to be reversible. That is. it is so constructed that it can be applied to the right side of the gun or to the left side. 'The bracket can be secured to either side plate at the openings 39 and 39 therein. Then the bracket is at the right the guide slot 40 is used, and when the bracket is at the left the slot 40 is used. It will therefore be apparent that the handle 45 and theassociated parts may be located either at the right side of the gun as shown or at the left side. When they are to be placed at the left-'side, the pin 38 is with drawn and inserted at the left.- With the handle 45 and the bar 42 located at the left, the operation is exactly the same as that already described.
  • a firearm embodying the presentinvention is primarily intended to be fired auto? matically by means of a trigger motor actuated by a suitable synchronizing mechanism as already stated.
  • the bracket 40 is so constructed and is of such size as to be interchangeable with the trigger motor intended to be used.
  • Fig. 5 shows a trigger motor which is adapted 'to be mounted and held in place in the same way as already described for the bracket 40, there being provided for this purpose a bolt M similar to the bolt 41.
  • Fig. 1 shows the trigger motor M located at the left side of the gun and the bracket 40 located at the right side of the gun, but it will be understood that in accordance with the invention the trigger motor may be located at either side and that the bracket 40 and that the parts associated therewith are located at the side opposite the trigger motor.
  • the trigger motor need not be fully described, but as shown in Fig. 5 the said motor comprises a transversely moving actuating member m which is adapted to operate the firing mechanism when the breech bolt is in its forward firing position.
  • the member 772. serves to move the sear in the direction necessary to release the firing pin.
  • Impulses are transmitted to the member m by means of a longitudinally movable plunger m actuated by a lever m.
  • a cable or lanyard may be connected to the lever m" to transmit motion from a suitable mechanism timed with the propeller of the airplane.
  • the member on is operated in timed relation with the propeller.
  • the breech bolt 17 is provided at the rear with a transverse horizontal slot or guideway in which is located a transversely and horizontally movable sear 46.
  • the sear has a forward extending hook portion 46 which is adapted to engage a locking shoulder 3O formed on the firing pin near the rear thereof.
  • the shoulder 80 is the rear wall of a notch cut into the pin.
  • a movable member 47 carried by the breech bolt adjacent the sear is a movable member 47 operatively connected with the sear and preferably having a portion which is movable vertically to effect horizontal movement of the sear.
  • the member 47 is a rock lever or hell crank positioned in a recess 17 in the rear part of the breech bolt and movable about a longitudinal axis.
  • This sear lever 47 is shown in detail in Figs. 14 and 15 and it is provided with a trunnion 47 adapted to enter a hole 48 formed in the breech bolt near the right side of the recess 17
  • the lever 47 has an elongated slot 47 adapted to receive a pin 46 projecting rearward from the sear.
  • a T-slot' 49 adapted to receive a combined retaining member and spring housing 50 which is shown in detail in Figs. 16, 17 and 18.
  • this member When this member is in its normal position as shown in Figs. 8 and 9 2. portion'of it extends in back of the sear lever 47 thus serving to hold the said lever in place.
  • a spring pressed plunger 51 Positioned within the member 50 is a spring pressed plunger 51 which bears against the top of the horizontal arm of the lever 47 thus tending to turn the lever in the counterclockwise direction and to thereby move the sear toward the left and into engagement with the firing pin.
  • the member 50 is locked in position by means of a pin lever 52' shown in detail in Figs. 19 and 20.
  • the forward pivot pin of this lever is adapted to be located in a vertical hole in the bottom of a longitudinal slot .17 c at the top of the breech bolt.
  • This'pin forming a partof the lever preferably also serves as theaforesaid pin against which the spring 31 abuts at the rear.
  • the lever 52' is recessed at 52' to' clear the cocking lever 32.
  • the rear part of the lever 52 extends over the top of the member 50 and when the member 50 is in its lower position the lever 52 may be swung laterally into a notch at theleft side of the slot 17 asclearly shown in Fig.8. Abeveled surface 50 at the top ofthe member 50 tends to prevent movement of the lever 52 toward the right and out of the notch. It will be understood that the cocking lever 32 must be removed before the pin lever 52 can be removed.
  • the sear 46 is preferably so constructed as to be reversible. It may occupy either the position shown in Figs. 8 to 10 or the position shown in Figs. 11 and 12. In this latter position the hook portion 46 of the sear no longer engages the shoulder of the firing pin but engages a similar shoulder 30 'at the left side thereof.
  • the sear opera-ting member 47 is a rock lever as shown and described, this lever is also reversible, so that it may be reversed when the sear is reversed.
  • the lever 47 maybe reversed it is provided with a trunnion 47 similar to the trunnion 47 and adapted to enter a hole 48 at the left of the center of the breech bolt and similar to the hole 48.
  • the retaining member 50 occupies the same position as before and serves to hold the lever 47 in place.
  • the spring plunger 51 engages the lever exactly as before but now tends to move it in the clockwise direction so as to move the sear toward the right and into engagement with the firing pin.
  • the trigger motor M is shown as located at the right side of the gun with the transversely movable member on thereof in position to directly engage the sear 46 to move it toward the left, that is, in direction to release the firing pin. If the trigger motor were located at the left, then the sear and associated parts would be in the relative positions shown in Figs. 8, 9 and 10.
  • the trigger motor is located at the right side or at the left side, and is actuated as already described in synchronism with the rotation of the propeller, with the result that the member m is rapidly reciprocated transversely.
  • the parts move rearward during recoil in the manner already described and then return to the forward firing position. parts reach the said forward firing position, firing takes place upon the next inward movement of the actuating member m. Ordinarily the reciprocation of the member m is.
  • a firearm embodying the present invention is primarily intended to be fired automatically I nevertheless prefer to provide means whereby the gun may be fired manually. Manual firing may be desirable for purposes of testing or to enable the gun to be used as a ground gun when necessary.
  • Pivotally mounted on the lock frame 20 is a trigger lever 53 which is so formed and so located that its forward end is immediately below and in register with the operating member or lever 47 when the breech bolt and attached parts are in their forward firing positions.
  • the gun as shown in Figs. 6 and 7 includes no means for operating the trigger lever 53' but the said lever is provided so that it can be operated when other parts are substituted as will now be described.
  • FIGs. 21 and 22 I have shown an alternate rear plate 54 which may be substituted for the plate 9 already described.
  • This plate 54 is held in place by a latch 55 similar to the'heforeinentioned latch 10.
  • Carried by the plate 54 is a buffer mechanism 56 which serves the same purpose as the buffer mechanism 11 although differently constructed.
  • a pivotally mounted trigger 58 having a finger piece 58 facing toward the rear and located between the two handles 57, 57.
  • a forward extending arm 58 of the trigger extends through a suitable slot in the plate 54 and is positioned immediately above the rear end of the trigger lever 53.
  • a spring 59 tends to move the trigger rearward.
  • the action of .the trigger and trigger lever is the same irrespective of the position of the sear and sear lever.
  • the gun when the gun is to be operated manually it is entirely immaterial whether the sear and sear lever are located in the positions shown in Fig. 8 or in the positions shown in Fig. 11.
  • the gun may be fired manually notwithstanding the presence thereon of a trigger motor such as M.
  • the manual action simply moves the sear away from the trigger motor and the trigger motor does not interfere in any way with the searmovement. It will also be apparent that the gun may be fired automatically even though the plate 54 and the attached parts are in place.
  • I preferably provide a safety device which prevents the firing of the gun when the trigger 58 is pressed accidentally or unintentionally.
  • a block 60 Mounted on the plate 54 immediately in front of the upper part of the trigger is a block 60 having a notch 60 in the front and also having a transverse groove 60" therein for thereception of a transversely movable safety bar 61.
  • the block 60 is held in place by means of a screw 62 extending downward from the top flange to which the handles 57, 57 are connected. Seated within this screw is a plunger 63 operated by a spring 63*, the plunger being adapted to enter one or the other of two recesses 61 in the safety bar 61.
  • a feed channel 64 Extending transversely through the gun near the front thereof is a feed channel 64 into which a cartridge belt may be fed either from the left or from the right.
  • a feed slide 65 Mounted in a downward extension of the cover 6 immediately above the feed channel 64 is a feed slide 65 which is adapted to move transversely.
  • This slide 65 carries a pawl 66 wh1ch is adapted to engage the forward cartridge of the cartridge belt to move it into firing position as shown in Fig. 31 or in Fig. 32.
  • the slide 65 with the pawl 66 thereon is bodily reversible so as to be adapted to feed the belt from left to right as shown in Fig. 31 or from right to left as shown in Fig. 32.
  • the pawl 66 preferably carries an extension 67 shown in detail in Figs. 38 and 39 which is adapted to be secured thereto at the rear side thereof.
  • this extension 66 is transferred from one side of the pawl to the other so that in either case it is at the rear.
  • a pawl 70 adapted to engage one cartridge of the belt to prevent backward movement thereof.
  • the pawl is located at the left, and when the belt is to be fed from right to left as shown in Fig. 32 the pawl is located at the right.
  • suitable stops 71 and 72 which are held in place by means of one of the pins 69.
  • a feed lever 73 which is pivotally mounted on a stud 74 projecting downward from the cover 6.
  • the slide 65 is provided with two notches 7 5, 75 and the forward end of the lever 7 3 projects into one or the other of these notches according to the position of the slide.
  • a depending stud 76 which extends into a cam groove 77 formed in the upper surface of the breech bolt 17
  • the lever 73 is provided near its pivot with a hole 78 in which is seated a spring 79 actuating a plunger 80. This plunger 80 bears against 9. depending side flange of the cover as clearly shown in Fig. 29.
  • a breech casing having two similar means at opposite sides thereof each adapted for the attachment of a trigger motor, a breech bolt within the casing and reciprocable upon recoil, reversible firing mechanism adapted when the breech bolt is in its forward firing position to be operated by a trigger motor attached at either side of the casing, a bracket attached to the casing by the attachment means thereof opposite to that used by the trigger motor, and means carried at least in part by the bracket for manually operating the breech bolt.
  • a breech bolt longitudinally reciprocable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt and provided with a sear engaging shoulder at one side
  • a cocking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely and horizontally movable sear carried by the breech bolt and biased for movement in one direction to engage the firing pin at the shoulder thereof to hold the pin in cocked position, the saidsear being adapted to be moved in the opposite direction to release the firing pin.
  • a breech casing having a hole in one side thereof adapted for the entry of the reciprocating actuating element of a separate trigger motor, a breech bolt within the casing and longitudinally reciprocable upon recoil, a spring actuated firing pin movable longitudinally of the breech bolt, a cocking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position, and a transversely and horizontally movable, sear carried by the breech bolt and biased for movement in one direction to engage the firing pin to hold it in cocked position, the said sear being in register with the said hole in the easing when the breech bolt is-in firing position and being adapted to be directly engaged by the actuating element of the trigger motor and thereby moved in the direction opposite to the first said direction to release the firing pin.
  • a breech bolt longitudinally movable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt and provided with two sear engaging shoulders at opposite sides thereof
  • a cocking lever on the breechbolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely movable sear carried by the breech bolt and reversible in position with respect thereto, the said scar when in one position being'adaptcd to engage the firing pin at one shoulder thereof to hold it in cocked position and when in the reversed position being adapted to similarly engage the pin at the opposite shoulder thereof
  • a breech bolt longitudinally reciprocable-u'pon recoil a spring actuated firing pin movable longitudinally of the breech bolt, a cocking lever on the breech bolt actlng automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely and horizontally movable sear carried by the breech bolt and reversible in position with respect thereto, the said sear when in one position being adapted to engage the firing pin at one side thereof to hold it in cocked position and when in the reversed position being adapted to similarly engage the pin at the opposite side thereof, means operable with the sear in either position for releasably maintaining it-normally in engagement with the pin, and a breech casing enclosing the rcciprocable breech bolt and having two holes therein at opposite sides thereof each adapted for the entry of the transversely movable actuating element of a separate trigger motor, the said holes in
  • a breech bolt longitudinally reciprocable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt
  • a cocking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely and horizontally movable sear carried by the breech bolt and biased for movement in one direction to engage the firing pin to hold it in cocked position
  • a relatively movable member carried by the breech bolt adjacent the sear and operatively connected therewith
  • manually operable trigger mechanism for moving the last said member so as to thereby move the sear horizontally in the direction opposite to the first said direction to release the firing pin.
  • a breech bolt longitudinally reciprocable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt
  • a cocking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely and horizontally movable sear carried by the breech bolt and biased Bil for movement in one direction to engage the firin pin to hold it in cocked position
  • a relatively movable member carried by the breech bolt adjacent the sear and operatively connected therewith
  • manually operable trigger mechanism for moving at least a portion of the last said member substantially vertically so as to thereby move the sear horizontally in the direction opposite to the first said direction to release the firing pin.
  • a breech bolt longitudinally reciprocable upon recoil
  • aspring actuated firing pin movable longitudinally of the breech bolt
  • a cooking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely and horizontally movable sear carried by the breech bolt and biased for movement in one direction to engage the firing pin to hold it in cocked position
  • a lever pivoted to the breech bolt for movement about a longitudinal axis and having operative connection with the scar
  • manually operable trigger mechanism for operating the last said lever to thereby move the sear in the direction opposite to the first said direction to release the firing pin.
  • a breech casing having a hole in one side thereof for the entry of the reciprocating actuating element of a separate trigger motor, a breech bolt within the casing and longitudinally reciprocable upon recoil, a spring actuated firing pin movable longitudi nally of the breech bolt, a cooking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position, a transversely and horizontally movable sear carried by the breech bolt and biased for movement in one direction to engage the firing pin to hold it in cocked position, the said sear being in register with the said hole in the casing when the breech bolt is in firing position and being adapted to be directly engaged by the actuating element of the'trigger motor and thereby moved in the direction opposite to the first said direction to release the firing pin, a relatively movable member-carried by the breech bolt adjacent the sear and operatively connected therewith, and trigger mechanism for
  • a breech bolt longitudinally movable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt and provided with two sear engaging shoulders at opposite sides thereof
  • a cocking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely and horizontally movable sear carried by the breech bolt and reversible in position with respect thereto, the said sear when in one position being adapted to engage the firing pin at one shoulder thereof to hold it in cocked position and when in the reversed position being adapted to similarly engage the pin at the opposite shoulder thereof
  • a relatively movable member carried by the breech bolt adjacent the sear and operatively connected therewith. in each position thereof, and manually operable trigger mechanism for operating the last said member to thereby move the sear in one
  • a breech bolt longitudinally movable upon recoil
  • a. spring actuated firing pin movable longitudinally of the breech bolt and provided with two sear engaging shoulders at opposite sides thereof
  • a cooking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely movable sear carried by the breech bolt and reversible in position with respect thereto, the said sear when in one position being adapted to engage the firing pin at one shoulder thereof to hold it in cocked position and when in the reversed position being adapted to similarly engage the pin at the opposite shoulder thereof
  • a lever pivoted to the breech bolt for movement about a longitudinal axis, the said lever being reversible in accordance with the position of the scar and having operative connection with the sear in each position thereof, and manually operable
  • a breech bolt longitudinally reciprocable uponrecoil
  • a spring actuated firing pin movable longitudinally of the breech bolt
  • a cooking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely and horizontally movable sear carried by the breech bolt and reversible in position with respect thereto, the said sear when in one position being adapted to engage the firing pin at one side thereof to hold it in cocked position and when in the reversed position being adapted to similarly engage the pin at the opposite side thereof
  • a breech casing enclosing the reciprocable breech bolt and having two holes therein at opposite sides thereof each adapted for the entry of the transversely movable actuating element of a separate trigger motor, the said holes in the casing being so located that one or
  • a breech bolt longitudinally reciprocable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt
  • a cooking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a spring serving to bias the lever for movement in one direction
  • a transversel and horizontally movable sear carried by t e breech bolt and operatively connected with the last said lever to be thereby biased for movement in the direction to engage the firing pin and hold it in cocked position, the said sear being adapted ,to be moved in the opposite direction to release the firing 1n.
  • a breech boltlongitudinally reciprocable upon recoil a spring actuated firing pin movable longitudinally of the breech bolt, a cooking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position, a removable lever pivoted to the breech bolt for movement about a longitudinal axis, a sear carried by the breech bolt and transversely movable in one direction to engage the firing pin to hold it in cocked position, the said sear bein operatively connected with the last said fiver and being adapted to be engaged independently of the lever and moved in the direction opposite to the first said direction to release the firing pin,v a spring housing detachably mounted on the breech bolt and serving when in normal position to retain the last said lever and prevent removal thereof, and a spring carried by the housing and serving tobias the leverin the direction to move the sear into engagement with the firing pin.
  • a breech bolt longitudinally recipro cable upon recoil a spring actuated firing pin movable longitudinally of the breech bolt, a cockin lever on the breech bolt acting automatica ly during recoil to move the firing pin relatively rearward to cocked position, a lever pivoted to the breech bolt for movement about a longitudinal axis, a spring engaging the lever to bias it in one direction, a sear carried by the breech bolt and transversely movable in one direction to engage the firing pin to hold it in cocked position, the said sear being operatively connected with the last said lever to be thereby biased for movementin the first said direction and being adapted to be directly engaged independently of the lever and moved in the opposite direction to release the firing pin, and manually operable trigger mechanism for operating the lever to thereby move the sear in the last said opposite direction to release the firing pin.
  • a breech bolt longitudinally movable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt and provided with two sear engaging shoulders at opposite sides thereof
  • a cockin lever on the breech bolt acting automatically during recoil to movethe firing pin relatively rearward to cocked position
  • a transversely movable sear carried by the breech bolt and reversible in position with respect thereto, the said sear when in one position being adapted to engage the firing pin at one shoulder thereof to hold it in cocked position and when in retain the last said lever in either of its relatively reversed positions and prevent removal thereof
  • a spring carried by the housing and serving in either of the relatively reversed positions of the lever to bias it in one direction or the other as required to maintain the sear in engagement with the firing pin.
  • a breech bolt longitudinally movable upon recoil
  • a spring actuated firing pin movable longitudinally of the breech bolt and provided with two sear engaging shoulders at opposite sides thereof
  • a cocking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a transversely movable sear carried by the breech bolt and reversible in position with respect thereto, the said sear when in one position being adapted to engage the firing pin at one shoulder thereof to hold it in cocked position and when in the reversed position being adapted to similarly engage the pin at the opposite shoulder thereof
  • a spring serving in either of the relatively reversed positions of the lever to bias it in one direction or the other as required to maintain the sear in engagement with
  • a breech casing having a transverse feed channel therethrough near'the front, a transversely movable feed slide reversible in position, a pawl on the slide serving accord ing to the position of the slide to feed a cartridge belt from left to right or from right to left, reciprocable breech mechanism in the casing, a feed lever pivoted to the casing for movement about a vertical axis and operatively connectible at the front to the feed slide with the latter in either of its relatively reversed positions, means carried by the breech mechanism and serving upon recoil movement thereof to turn the lever in one direction or the other to move the slide either toward the left or toward the right as required by the position thereof, and a spring on the lever adapted to be located either at the front or at the rear of the axis thereof so as to bias the lever in one direction or the other as required.
  • cocking lever on the breech bolt acting automatically during recoil to move the firing pin relatively rearward to cocked position
  • a sear carried by the breech bolt and biased for movement in one direction to engage the firing pin to hold it in cocked position
  • manually operable trigger mechanism for moving the sear in the direction to release-the firing pin
  • the said mechanism including a trigger at the rear of the firearm movable in the forward direction to release the sear, a transversely grooved block immediately in front of the trigger and having a notch for receiving a portion thereof, and a safety bar slidable in the groove in the block and having a notch movable into and out of register with the notch in the block, the said bar thus serving according to its position to permit or prevent operative movement of the trigger.
US407522A 1929-11-15 1929-11-15 Automatic firearm Expired - Lifetime US1803349A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US407522A US1803349A (en) 1929-11-15 1929-11-15 Automatic firearm
GB502/31A GB370900A (en) 1929-11-15 1931-01-06 Improvements in or relating to automatic firearms
DEC44455D DE576421C (de) 1929-11-15 1931-02-27 Selbsttaetige Feuerwaffe
NL56157A NL36959C (de) 1929-11-15 1931-03-23
BE379093D BE379093A (de) 1929-11-15 1931-04-16
FR715554D FR715554A (fr) 1929-11-15 1931-04-16 Perfectionnements aux armes à feu automatiques

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US407522A US1803349A (en) 1929-11-15 1929-11-15 Automatic firearm
GB502/31A GB370900A (en) 1929-11-15 1931-01-06 Improvements in or relating to automatic firearms
DEC44455D DE576421C (de) 1929-11-15 1931-02-27 Selbsttaetige Feuerwaffe
NL56157A NL36959C (de) 1929-11-15 1931-03-23
BE379093T 1931-04-16
FR715554T 1931-04-16

Publications (1)

Publication Number Publication Date
US1803349A true US1803349A (en) 1931-05-05

Family

ID=40510527

Family Applications (1)

Application Number Title Priority Date Filing Date
US407522A Expired - Lifetime US1803349A (en) 1929-11-15 1929-11-15 Automatic firearm

Country Status (6)

Country Link
US (1) US1803349A (de)
BE (1) BE379093A (de)
DE (1) DE576421C (de)
FR (1) FR715554A (de)
GB (1) GB370900A (de)
NL (1) NL36959C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504994A (en) * 1942-10-30 1950-04-25 Us Sec War Reversible feed mechanism for machine guns
US2689504A (en) * 1950-12-15 1954-09-21 Us Sec War Sear locking device for automatic firearms
US2750841A (en) * 1953-03-24 1956-06-19 Borde Frank C La Extractor spring retainer for a firearm
US3425317A (en) * 1966-09-27 1969-02-04 Rheinmetall Gmbh Machine gun with raisable cartridge feeder cover
CH666741A5 (de) * 1985-05-31 1988-08-15 Oerlikon Buehrle Ag Patronenzufuehrvorrichtung fuer eine automatische feuerwaffe.
US4942802A (en) * 1987-09-24 1990-07-24 Ares, Inc. Convertible, belt/clip-fed automatic gun with positive shell casing ejection
EP0386389A1 (de) * 1989-03-10 1990-09-12 Schweizerische Eidgenossenschaft, w + f Bern Abzugsicherung an einer Schusswaffe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191260B (de) * 1958-08-22 1965-04-15 Rudolf Geipel Einsatzgeraet mit Einstecklauf fuer automatische Waffen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504994A (en) * 1942-10-30 1950-04-25 Us Sec War Reversible feed mechanism for machine guns
US2689504A (en) * 1950-12-15 1954-09-21 Us Sec War Sear locking device for automatic firearms
US2750841A (en) * 1953-03-24 1956-06-19 Borde Frank C La Extractor spring retainer for a firearm
US3425317A (en) * 1966-09-27 1969-02-04 Rheinmetall Gmbh Machine gun with raisable cartridge feeder cover
CH666741A5 (de) * 1985-05-31 1988-08-15 Oerlikon Buehrle Ag Patronenzufuehrvorrichtung fuer eine automatische feuerwaffe.
US4942802A (en) * 1987-09-24 1990-07-24 Ares, Inc. Convertible, belt/clip-fed automatic gun with positive shell casing ejection
EP0386389A1 (de) * 1989-03-10 1990-09-12 Schweizerische Eidgenossenschaft, w + f Bern Abzugsicherung an einer Schusswaffe
US5036749A (en) * 1989-03-10 1991-08-06 Schweizerische Eidenossenschaft Eidgenossische . . . Trigger safety for a firearm

Also Published As

Publication number Publication date
FR715554A (fr) 1931-12-05
GB370900A (en) 1932-04-06
BE379093A (de) 1931-05-30
NL36959C (de) 1935-12-16
DE576421C (de) 1933-05-31

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