US1811693A - Gas operated machine gun and automatic small arm - Google Patents

Gas operated machine gun and automatic small arm Download PDF

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Publication number
US1811693A
US1811693A US508402A US50840231A US1811693A US 1811693 A US1811693 A US 1811693A US 508402 A US508402 A US 508402A US 50840231 A US50840231 A US 50840231A US 1811693 A US1811693 A US 1811693A
Authority
US
United States
Prior art keywords
gas
recess
small arm
main part
machine gun
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
US508402A
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English (en)
Inventor
Larsson Carl Alfred
Higson Percy Reuben
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.)
Vinters Armstrongs Ltd
Original Assignee
Vickers Armstrongs 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
Application filed by Vickers Armstrongs Ltd filed Critical Vickers Armstrongs Ltd
Application granted granted Critical
Publication of US1811693A publication Critical patent/US1811693A/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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/18—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
    • F41A5/26—Arrangements or systems for bleeding the gas from the barrel

Definitions

  • This invention relates to machine guns with the bore of the barrel through a port in the latter.
  • This plug has heretofore been made in one piece and the passages have necessarily been of straight formation with one portion generally at right angles to the other, with the result that they are liable to become blocked with solid fouling matter contained in the gases of combustion from the bore of the barrel.
  • the gas plug is made in two parts, viz., a main part which is adapted to be secured in the block and a subsidiary part which fits into the main part and is provided with a curved gas-passage in the form of a recess opening on to one of the faces of this subsidiary part.
  • a main part which is adapted to be secured in the block
  • a subsidiary part which fits into the main part and is provided with a curved gas-passage in the form of a recess opening on to one of the faces of this subsidiary part.
  • the said subsidiary part is preferably of flat formation and is disposed within a slot formed in the main part of the plug. It will be understood that when the subsidiary part is in position in the main part the gas passage is constituted by the three walls of the recess in the subsidiary part and by the eontiguous wall of the slot in the main part.
  • Figure 1 is a vertical section showing a con 1 structional form of composite gas plug according to this invention in position in a gas block carried by the gun barrel.
  • Figure 2 is a horizontal section of the gas block taken approximately on the line 2, 2 of Figure 1, the gas plug not being shown in section,
  • Figure 3 is a side view of the main part of the gas plug removed from the gas block
  • Figure 4 is an end view of Figure '3
  • Figure '5 is .a vertical section of Figure 3, I
  • Figures '6 and 7 are horizontal sections taken approximately on the lines 6, 6 and 7, 7 respectively of Figure 8,
  • Figure 8 is a side elevation of the subsidiary part of the gas plug removed from the main part, V
  • Figure 9 is a vertical longitudinal section of the said subsidiary part
  • Figure 10 is a plan of Figure 8.
  • Figure 11 is a horizontal section taken approximately on the line 11, 11 of Figure 8.
  • A is the gas block the upper portion of which is in the form of a sleeve to surround the gun barrel 1 and the lower part has a recess to receive the gas plug.
  • This recess terminates at its upper end in a port A which registers with a port 2 formed in the gun barrel and at its left hand side, as drawn in Figure 1, the said recess communicates with the bore of the spigot portion A which fits into the operating cylinder 3 for the breech mechanism.
  • the said gas block is similar in its essentials to that described in prior English specification No. 252,429.
  • the gas plug is, as aforesaid, composed of two parts, .v1z a main part B and a subsidiary part C.
  • the said main part which is adapted to be screwed-into the recess in the block A, is formed with a diametrical slot B
  • the subsidiary part C is flat and constructed to fit closely within the slot B it is formed on one of its faces withra curved recess C one end of which terminates on its upper surface and the other end terminates of the curved recess C and by the. contiguous wall of the slot B
  • the said curved recess can conveniently be made by a milling operation.
  • the main part B of the gas plug is shown as being formed with recesses B B for purposes similar to those of the corresponding recesses in the gas plug described in our aforesaid prior specification and the block A is formed with a hole A for the reception of the customary regulating valve B (shown in broken lines in Figure 2) to control the amount of gas to be admitted to the operating cylinder.
  • a portion of the gases reaches this regulating valve by means of arecess B in the portion of the main part B between the recesses B E the shape of the recess B being shown in Figure 6.
  • the rear portion of the subsidiary part C is cut away (at C to coincide with the recess 13*.
  • a gas plug composed of a main part which is adapted to be secured in the gas block, and a subsidiary part which fits into the main part and is provided with a curved gas passage in the form of a recess into said slot and is provided with a curved I recess opening on to one of the faces of said subsidiary part, the gas passage being constituted by the three walls of the curvedrecess in the subsidiary part and by the contiguous wall of the slot in the main part.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)
US508402A 1930-02-10 1931-01-13 Gas operated machine gun and automatic small arm Expired - Lifetime US1811693A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4436/30A GB348568A (en) 1930-02-10 1930-02-10 Improvements in or relating to gas operated machine guns and automatic small arms

Publications (1)

Publication Number Publication Date
US1811693A true US1811693A (en) 1931-06-23

Family

ID=9777133

Family Applications (1)

Application Number Title Priority Date Filing Date
US508402A Expired - Lifetime US1811693A (en) 1930-02-10 1931-01-13 Gas operated machine gun and automatic small arm

Country Status (4)

Country Link
US (1) US1811693A (en(2012))
BE (1) BE376421A (en(2012))
FR (1) FR709102A (en(2012))
GB (1) GB348568A (en(2012))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030209075A1 (en) * 2002-05-13 2003-11-13 Wacoh Corporation Acceleration sensor and manufacturing method for the same
US8869674B2 (en) 2012-02-14 2014-10-28 Michael Alan Ruck Gas piston control system for a firearm
US11041687B2 (en) * 2018-12-10 2021-06-22 Maxim Defense Industries, LLC Gas block and barrel assembly and method of fabricating same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030209075A1 (en) * 2002-05-13 2003-11-13 Wacoh Corporation Acceleration sensor and manufacturing method for the same
US8869674B2 (en) 2012-02-14 2014-10-28 Michael Alan Ruck Gas piston control system for a firearm
US11041687B2 (en) * 2018-12-10 2021-06-22 Maxim Defense Industries, LLC Gas block and barrel assembly and method of fabricating same

Also Published As

Publication number Publication date
FR709102A (fr) 1931-08-03
BE376421A (en(2012))
GB348568A (en) 1931-05-11

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