US1975236A - Machine gun and automatic small arm of the gas operated type - Google Patents

Machine gun and automatic small arm of the gas operated type Download PDF

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Publication number
US1975236A
US1975236A US679156A US67915633A US1975236A US 1975236 A US1975236 A US 1975236A US 679156 A US679156 A US 679156A US 67915633 A US67915633 A US 67915633A US 1975236 A US1975236 A US 1975236A
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US
United States
Prior art keywords
piston rod
gas operated
small arm
machine gun
automatic small
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
US679156A
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English (en)
Inventor
Palmer Arthur Joseph
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 US1975236A publication Critical patent/US1975236A/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

Definitions

  • This invention relates to machine guns and automatic small arms of the gas operated type. It has heretofore been customary to stop the forward movement of the gas operated piston rod by means of a stop member inserted into or made integral with the gun casing, a shoulder on the piston rod bearing against this stop member to limit the forward movement of the piston rod.
  • This stop member has heretofore had a face at 10; right angles to the direction of movement of the piston rod and the shoulder on the piston rod has a similarly shaped face, and it is found in practice that with such a construction the piston rod is liable to rebound with consequent disadvantages.
  • the chief object of the invention is to overcome this difficulty.
  • the co-operating faces on the stop member and on the piston rod instead of being at right angles to the direction of motion as mentioned above, are arranged at a suitable angle other than a right angle to the said direction of movement to produce a cushioning effect so that rebound of the piston rod is prevented or substantially reduced.
  • Figure 1 is a side elevation of part of a machine gun made in accordance with the invention.
  • Figure 2 is a section on the line II-II in Figure 1, and
  • FIG 3 is a sectional view of the gun casing (omitting the piston rod) on the line III-III in Figure 1.
  • the gas operated piston rod A has at its upper part the abutment face A and. the stop member B has the co-operating face B
  • Each of the faces A B is part of a frusto-conical surface and is in the example shown at an angle of sixty degrees to the longitudinal axis of the piston rod.
  • the faces also slope in a rearward direction, i. e. the upper or outer edges A (remote from the axis of the piston rod) are nearer to the rear end of the gun than the lower or inner edges.
  • a stop arrangement as above described will limit the forward movement of the piston rod without appreciable rebound.
  • the faces A B may slope forwardly, instead of rearwardly as described above.
  • the stop member B is in the form of a rivet inserted in the gun casing D and cut away to form the face B as shown in Figure 3.
  • the stop member B may however be formed integrally with the gun casing D.
  • E indicates the usual spring for pressing the piston rod forwardly.
  • a machine gun or automatic small arm of D the gas operated type having a gas operated piston rod, an abutment on said piston rod, and a rigid stop member for co-operating with said abutment, the co-operating faces of the abutment and stop member being at an angle other than perpendicular to the direction of movement of the piston rod, for reducing rebound of the piston rod.
  • a machine gun or automatic small arm of the gas operated type having a gas operated piston rod, anabutment on said piston rod, and a rigid stop member for co-operating with said abutment, the co-operating faces of the abutment and stop member being at an angle of sixty degrees to the axis of the piston rod.
  • stop member is in the form of a rivet inserted in the gun casing and shaped to form an inclined stop face.
  • a machine gun or automatic small arm of the gas operated type having a gas operated piston rod, an abutment on said piston rod, and a rigid stop member for co-operating with said abutment, the abutment and stop member having co-operating faces at an angle other than perpendicular to the direction of movement of the piston suitable for reducing rebound of the piston rod and the inclination being such that the outermost edges of said faces are nearer to the rear end of the gun than their inner edges.
  • a machine gun or automatic small arm of the gas operated type having a gas operated piston rod, an abutment on said piston rod, and a stop member for operating with said abutment, the stop member being in the form of a rivet inserted in the gun casing and shaped between its ends to form a stop-face comprising part of a frusto-conical surface at an angle of sixty degrees to the axis of the piston rod with the outermost edge nearer to the rear end of the gun than its inner edge and the co-operating face of the abutment'being of similar shagpei and in- 'clination.
  • A,machine gun or automatic small'arm fthegas operated type having a-gas operated pie-Y ton red, a spring acting on said piston rod to move the rod forwardly, an abutment on said piston red, and a rigid stop member for co-operating with said-abutment to limit the extent of movement of said pistoii r'od under the action (if said spring; the comparating. faces of the abut e 'ment and rigid. stop member being at an angle

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating Apparatus (AREA)
US679156A 1932-08-25 1933-07-06 Machine gun and automatic small arm of the gas operated type Expired - Lifetime US1975236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23809/32A GB399306A (en) 1932-08-25 1932-08-25 Improvements in or relating to machine guns and automatic small arms of the gas operated type

Publications (1)

Publication Number Publication Date
US1975236A true US1975236A (en) 1934-10-02

Family

ID=10201656

Family Applications (1)

Application Number Title Priority Date Filing Date
US679156A Expired - Lifetime US1975236A (en) 1932-08-25 1933-07-06 Machine gun and automatic small arm of the gas operated type

Country Status (4)

Country Link
US (1) US1975236A (enrdf_load_stackoverflow)
BE (1) BE397297A (enrdf_load_stackoverflow)
FR (1) FR757774A (enrdf_load_stackoverflow)
GB (1) GB399306A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5591934A (en) * 1994-04-28 1997-01-07 Giat Industries Blocking part insertable in a breech ring for preventing translation of a rod within the breech ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5591934A (en) * 1994-04-28 1997-01-07 Giat Industries Blocking part insertable in a breech ring for preventing translation of a rod within the breech ring

Also Published As

Publication number Publication date
BE397297A (enrdf_load_stackoverflow)
FR757774A (fr) 1934-01-04
GB399306A (en) 1933-10-05

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