US2042449A - Quick firing arm - Google Patents

Quick firing arm Download PDF

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Publication number
US2042449A
US2042449A US654072A US65407233A US2042449A US 2042449 A US2042449 A US 2042449A US 654072 A US654072 A US 654072A US 65407233 A US65407233 A US 65407233A US 2042449 A US2042449 A US 2042449A
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US
United States
Prior art keywords
barrel
sleeve
cooling
nozzle
chamber
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
US654072A
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English (en)
Inventor
Baumann Werner
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2042449A publication Critical patent/US2042449A/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
    • F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
    • F41A13/12—Systems for cooling the outer surface of the barrel

Definitions

  • the present invention concerns a cooling arrangement for quick-firing arms (machine-guns, rifles, guns, etc.).
  • the object of my invention is to provide a cooling device for quick-firing arms that is free from all these drawbacks.
  • the essential feature of my invention is that I make use of the wasted energy of the discharge. which is about one third of the total energy produced, 'for circulating the cooling atmospheric air through a system of fins in intimate contact with the barrel or integral therewith.
  • my invention it is possible to recover a part of said energy and to utilize it owing to the arrangement, at the end of the barrel of the arm, of a chamber which causes the gases to expand a first time, and of an ejector-nozzle of a known type, which produces a second expansion of said gases and further determines the suction necessary for circulating the cooling air about the barrel.
  • Fig. 1 is a partial longitudinal sectional view of an embodiment of the cooling device according to my invention, said device being fitted to the end of the barrel of a quick-firing arm;
  • Figs. 2, 3, 4 are sectional views on the lines 2-2, 3-3, 4-4 respectively of Fig. 1;
  • Fig. 5 is a longitudinal sectional View of another embodiment of my invention.
  • Fig. 6 is a sectional view on the line 6--6 of Fig. 5;
  • FIG. 7 is an elevational view of an arm provided with the cooling device according to my invention, a part of the outer casing being cut away;
  • Fig. 8 is a detail front view; and Fig. 9 is asectional view on the line 9-9 of Fig. 8.
  • the barrel l of the arm is surrounded with a sleeve 2 which forms, along and around the barrel, an annular space 3 in which a stream of cooling air is caused to flow, under the efiect of the suction created by the exhaust gases through means that will be hereinafter described.
  • a tubular body 4 At the end of the barrel there is screwed a tubular body 4 the inner diameter of which is sufficiently large for allowing the projectile to pass freely and which communicates through two lateral ports 5, 5, with a closed chamber 6 of relatively large volume.
  • Tubular body 4 is provided at its end with a divergent nozzle 1 which forms, with a convergent nozzle 8 provided at the end of sleeve 2, a kind of ejector.
  • the exhaust gases penetrate through ports 5, 5 into chamber 5 where they expand,
  • the intermediate expansion chamber 6 consists of an annular space limited by convergent nozzle 8 disposed at the end of sleeve 2 and by an outer casing 9.. With this arrangement, the whole of the apparatus forms a body of revolution about the axis of the barrel. Chamber 6 communicates with tubular body 4 screwed at the end of the barrel through two conduits 5 which open on either side of body 4.
  • Fig. 7 shows an arm provided with the apparatus of Figs. 5 and 6. It will be seen from that Figure 7 that sleeve 2 extends along the whole length of the barrel of the arm and that it is provided, on the side of the breech of the latter, with openings 68 for the inflow of air. At 2 said sleeve is provided with a tube for the outlet of a certain portion of the gases, for instance for the automatic working of the arm.
  • annular space 3 with longitudinal partitions which consist of metallic fins in contact with the barrel or integral therewith.
  • This arrangement can be obtained by slipping over the barrel a plurality of annular members I! of the type shown in Figs. 8 and 9, said members being provided with fins l2, which are placed in line with one another when said annular members are added.
  • 'A cooling device for quick firing arms which comprises in combination, a sleeve surrounding said arm open at one end to the atmosphere, a cylindrical body adapted to be fixed to the end of said arm, a chamber connected with the inside of said cylindrical body along an intermediate portion thereof but without direct communication with said sleeve, a nozzle fixed to the end of said sleeve and opening into the atmosphere, and a nozzle fixed'to the outer end of said cylindrical body and opening substantially coaxially into'said first mentioned nozzle, whereby the exhaust gases escaping through the second mentioned nozzle cause a stream of cooling air to fiow through said sleeve.
  • a cooling device for quick firing arms having at least one barrel, which comprises in combination, a sleeve surrounding said barrel open to the atmosphere at one end, a cylindrical body adapted to be fixed to the end of said barrel, and provided with at least one longitudinal port, a chamber rigidly fixed to said body and connected with said ports, a convergent nozzle fixed to the other end of said sleeve and opening into the ing through the second mentioned nozzle cause a atmosphere, and a divergent nozzle fixed to the outer end of said cylindrical body and opening substantially coaxially into the first mentioned nozzle, whereby the exhaust gases escaping through the second mentioned nozzle cause a 5 stream of cooling air to fiow through said sleeve.
  • a cooling device for quick firing arms having at least one barrel, which comprises in combination, a sleeve surrounding said barrel open to the atmosphere at one end, a convergent noz- 10 zle fixed to said sleeve at the other end thereof, a
  • cylindrical body fixed in said sleeve adapted to be screwed at the end of said barrel, and provided with at least one longitudinal port, a chamber fixed to the under part of said sleeve and 15 connected with said ports, and a divergent body fixed to the outer end of said cylindrical body and opening substantially coaxially into the first mentioned nozzle, whereby the exhaust gases escaping through the second mentioned nozzle cause a stream of cooling air to flow through said sleeve.
  • a cooling device for quick firing arms having at least one barrel, which comprises in combination, a sleeve surrounding said barrel open to the atmosphere at one end, a convergent nozzle 25 stream of cooling air'to flow through said sleeve.
  • a device for cooling the barrel of a quick firing arm which comprises in combination, a chamber communicating with the inside of said barrel for allowing the powder gases to expand 40' into said chamber down to a pressure higher than atmospheric pressure, discharge means between said chamber and the atmosphere, including a passage of restricted section of flow,
  • a device for cooling the barrel of a quick firing arm which comprises in combination, a chamber communicating with the inside of said barrel for allowing the powder gases to expand into said chamber down to a pressure higher than atmospheric pressure, a. nozzle connecting said chamber to the atmosphere, and the minimum section of which approximates the section of fiow through said barrel, a sleeve surrounding said barrel and open at the rear to the atmosphere, and a nozzle connecting the front end of said sleeve to the atmosphere coaxially surrounding said first mentioned nozzle, said sleeve and said second mentioned nozzle being distinct from, and unconnected with, said chamber, whereby the jet of outflowing gases issuing through said first mentioned nozzle induces a stream of cooling air to flow through said sleeve and said second mentioned nozzle.
  • a device for cooling the barrel of a quick firing arm which comprises in combination, a chamber communicating with the inside of said barrel for allowing the powder gases to expand into said chamber down to a pressure higher than atmospheric pressure, a divergent nozzle connecting said chamber to the atmosphere, a sleeve surrounding said barrel and open at the rear to the atmosphere, and a convergent nozzle connecting the front end of said sleeve to the atmosphere coaxially surrounding said first mentioned nozzle, said sleeve and said convergent nozzle being distinct from, and unconnected with, said chamber, whereby the jet of outflowing gases issuing through said first mentioned nozzle induces a stream of cooling air to flow through said sleeve and said second mentioned nozzle.
  • a device for cooling the barrel of a quick firing arm which comprises in combination, a sleeve surrounding said barrel and open at the rear end to the atmosphere, a chamber communicating with the inside of said barrel at a small distance from the end thereof but without direct communication with said sleeve, a nozzle at the front end of said sleeve opening into the atmosphere, and a nozzle connected with the end of said barrel and opening coaxially into said first mentioned nozzle close to the open end thereof, whereby the jet of outfiowing gases issuing through said second mentioned nozzle in- 25 Jerusalem a stream of cooling air to flow through said sleeve and said first mentioned nozzle.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Furnace Details (AREA)
US654072A 1932-01-29 1933-01-28 Quick firing arm Expired - Lifetime US2042449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR602418X 1932-01-29

Publications (1)

Publication Number Publication Date
US2042449A true US2042449A (en) 1936-06-02

Family

ID=8971983

Family Applications (1)

Application Number Title Priority Date Filing Date
US654072A Expired - Lifetime US2042449A (en) 1932-01-29 1933-01-28 Quick firing arm

Country Status (7)

Country Link
US (1) US2042449A (enrdf_load_stackoverflow)
BE (1) BE394045A (enrdf_load_stackoverflow)
CH (1) CH170795A (enrdf_load_stackoverflow)
DE (1) DE602418C (enrdf_load_stackoverflow)
FR (2) FR43357E (enrdf_load_stackoverflow)
GB (1) GB402956A (enrdf_load_stackoverflow)
NL (1) NL36123C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8783154B1 (en) * 2012-11-28 2014-07-22 The United States Of America As Represented By The Secretary Of The Army Seebeck active cooling device for caliber weapons

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109029067B (zh) * 2018-06-28 2020-12-18 南京理工大学 一种基于扰流叶片的发射装置身管冷却水套

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8783154B1 (en) * 2012-11-28 2014-07-22 The United States Of America As Represented By The Secretary Of The Army Seebeck active cooling device for caliber weapons

Also Published As

Publication number Publication date
FR745706A (enrdf_load_stackoverflow) 1933-05-13
NL36123C (enrdf_load_stackoverflow)
GB402956A (en) 1933-12-14
FR43357E (fr) 1934-05-11
DE602418C (de) 1934-09-07
CH170795A (fr) 1934-07-31
BE394045A (enrdf_load_stackoverflow)

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