US2249899A - Gun barrel construction - Google Patents
Gun barrel construction Download PDFInfo
- Publication number
- US2249899A US2249899A US325055A US32505540A US2249899A US 2249899 A US2249899 A US 2249899A US 325055 A US325055 A US 325055A US 32505540 A US32505540 A US 32505540A US 2249899 A US2249899 A US 2249899A
- Authority
- US
- United States
- Prior art keywords
- barrel
- sleeve
- gun barrel
- construction
- 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
Links
- 238000010276 construction Methods 0.000 title description 18
- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 238000013016 damping Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 6
- 239000005060 rubber Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000007779 soft material Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- 229920013648 Perbunan Polymers 0.000 description 1
- -1 Thiokal Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/02—Composite barrels, i.e. barrels having multiple layers, e.g. of different materials
Definitions
- This invention relates to gun barrel constructions; and it comprises an improved gun barrel construction adapted to minimize barrel whip, and more particularly a gun barrel construction comprising an outer sleeve of inelastic plastic material of high vibration-damping properties cohesively bonded to the barrel, said inelastic sleeve usually being covered by a protective sleeve cohesively bonded thereto; all as more fully hereinafter set forth and as claimed.
- Barrel whip is a vibration of the barrel caused by explosion of the cartridge or by the passage of the bullet through the barrel. While the vibration is largely lateral rather than torsional in character it is somewhat more pronounced in rifles than in smooth bore guns.
- Barrel whip in some cases is a cause of rather serious inaccuracies, in otherwise well constructed guns. It can be reduced by making the barrel quite heavy, but there are obvious disadvantages to this expedient.
- a gun barrel construction in which the barrel whip is minimized, with but little addition of weight or bulk to the barrel, and the provision of a compact and light gun barrel construction in which means are provided for heavily damping barrel vibrations of all types.
- the invention is based on the discovery that by providing a gun barrel with a closely bonded sleeve of a plastic or soft material of good damping (poor wave-transmitting) properties, barrel whip is minimized, to a degree out of all proportion to the mere mass of the sleeve.
- the damping sleeve is in turn bonded to an outer sleeve.
- Such three-fold construction is especially efiicient in damping the undesired vibrations. In all cases, for best results, a bond as complete as practicable between the damping sleeve and the barrel, and between the damping sleeve and the outer sleeve, is desirable.
- Fig. 1 is a view partly in central vertical section and partly in elevation, of one form of gun barrel construction
- Fig. 2 is a cross sectional view of a gun barrel construction showing a modified sleeve construction.
- a tubular gun barrel I having the usual riiiing 2 is fitted with an inelastic tubular sleeve 3 of a plastic material of the nature of soft rubber or synthetic rubber, cohesively bonded to the barrel, by vulcanization or by a suitable adhesive.
- a suitable adhesive for example in employing rubber or Neoprene (polyprene) synthetic rubber for the sleeve, suitable rubber chloride cements make a good cohesive bond.
- sleeve 5 is flanged at E for retention in a groove 1 in the barrel, to insure against relative movement endwise under recoil.
- the vibration-damping proportions of the rubber and steel sleeve combination are slightly enhanced if this connection 6, 1 is omitted.
- the vibration damper extends to a position on the gun barrel just short of the front sight 4.
- the plastic sleeve can be embodied in Celluloid or in a material such as Bakelite (phenol formaldehyde) synthetic resin, as indicated at 30 in Fig. 2.
- Bakelite phenol formaldehyde
- synthetic resins it is useful to employ preparations impregnated with asbestos, ground wood or other fibers or particles, as. these preparations are poorer wave-transmitting media than the simple resins.
- suitable resins beside those of the phenolformaldehyde type are urea-formaldehyde resins and vinyl resins.
- the material for the sleeve should be one which can be caused to adhere or cohere to the (steel) barrel. With some sleeve materials it is convenient to treat the surface of the barrel in some suitable way to promote coherence. Some of the very soft and inelastic metals can be used for the sleeve, such as lead or tin or alloys thereof, die-casting metal and the like sweated or otherwise cohesively secured to the barrel. However, the non-metallic materials described are very effective and are lighter.
- the outer metallic sleeve is desirable because,
- the sleeves can extend the full length of the barrel or only part way, depending on the magnitude of the barrel whip to be overcome and on the shape of the barrel. In barrels of high breech-diameter to muzzle-diameter ratio, the sleeves need extend only partway back from the muzzle.
- the invention can be applied to advantage to various forms of small arms, rifled or smooth-bore: rifles, sub-machine guns, pistols, etc.
- the relative thicknesses of the sleeves depend on the particular barrel under construction. The thicknesses of the sleeves can vary along the length of the barrel if desired. While the invention permits a very light barrel construction it can of course be embodied in heavier barrels where weight is desirable, as in target rifles.
- the combination which comprises a sleeve of inelastic non-metallic plastic material of poor vibration-transmitting properties cohesively bonded to the gun barrel.
Description
y 1941- .1. w. HOGG GUN BARREL CONSTRUCTION Filed March 20,1940
A mm 7 2 M lllalllli mm JOB/Tu Patented July 22, 1941 UNITED STATES PATENT OFFICE 2,249,899 I GUN BARREL CONSTRUCTION J clin W. Hogg, Llanerch, Pa. I Application March 20, 1940, Serial No. 325,055
5 Claims.
This invention relates to gun barrel constructions; and it comprises an improved gun barrel construction adapted to minimize barrel whip, and more particularly a gun barrel construction comprising an outer sleeve of inelastic plastic material of high vibration-damping properties cohesively bonded to the barrel, said inelastic sleeve usually being covered by a protective sleeve cohesively bonded thereto; all as more fully hereinafter set forth and as claimed.
Small arms, especially rifles, sometimes exhibit firing inaccuracies which, after elimination of the more obvious causes such as lack of straightness of the barrel, insuflicient length, etc., have been traced to barrel whip. Barrel whip is a vibration of the barrel caused by explosion of the cartridge or by the passage of the bullet through the barrel. While the vibration is largely lateral rather than torsional in character it is somewhat more pronounced in rifles than in smooth bore guns.
Barrel whip in some cases is a cause of rather serious inaccuracies, in otherwise well constructed guns. It can be reduced by making the barrel quite heavy, but there are obvious disadvantages to this expedient.
Among the objects achieved in the present invention are the provision of a gun barrel construction in which the barrel whip is minimized, with but little addition of weight or bulk to the barrel, and the provision of a compact and light gun barrel construction in which means are provided for heavily damping barrel vibrations of all types.
The invention is based on the discovery that by providing a gun barrel with a closely bonded sleeve of a plastic or soft material of good damping (poor wave-transmitting) properties, barrel whip is minimized, to a degree out of all proportion to the mere mass of the sleeve. Advantageously the damping sleeve is in turn bonded to an outer sleeve. Such three-fold construction is especially efiicient in damping the undesired vibrations. In all cases, for best results, a bond as complete as practicable between the damping sleeve and the barrel, and between the damping sleeve and the outer sleeve, is desirable.
In the accompanying drawing there is shown, more or less diagrammatically, two examples of specific embodiments of apparatus within the purview of the invention. In the drawing,
Fig. 1 is a view partly in central vertical section and partly in elevation, of one form of gun barrel construction, and
Fig. 2 is a cross sectional view of a gun barrel construction showing a modified sleeve construction. I
In Fig. l, a tubular gun barrel I having the usual riiiing 2 is fitted with an inelastic tubular sleeve 3 of a plastic material of the nature of soft rubber or synthetic rubber, cohesively bonded to the barrel, by vulcanization or by a suitable adhesive. For example in employing rubber or Neoprene (polyprene) synthetic rubber for the sleeve, suitable rubber chloride cements make a good cohesive bond. An outer metallic sleeve 5, desirably of steel, is shown fitted over plastic sleeve 3 and cohesively bonded thereto. Advantageously, though not necessarily, sleeve 5 is flanged at E for retention in a groove 1 in the barrel, to insure against relative movement endwise under recoil. The vibration-damping proportions of the rubber and steel sleeve combination are slightly enhanced if this connection 6, 1 is omitted. In the construction shown in the drawing the vibration damper extends to a position on the gun barrel just short of the front sight 4.
In operation, on firing the gun the barrel tends to whip, but vibration is suppressed by the plastic sleeve which damps vibrations even of large amplitude.
In lieu of rubber or rubber-like materials such as Neoprene, Thiokal, Perbunan, rubber chloride, etc. the plastic sleeve can be embodied in Celluloid or in a material such as Bakelite (phenol formaldehyde) synthetic resin, as indicated at 30 in Fig. 2. In employing synthetic resins it is useful to employ preparations impregnated with asbestos, ground wood or other fibers or particles, as. these preparations are poorer wave-transmitting media than the simple resins. Among other suitable resins beside those of the phenolformaldehyde type are urea-formaldehyde resins and vinyl resins. Whatever sleeve material is employed, close cohesion to the barrel and the outer sheath, rather than mere contact, is very desirable in securing the required wave-damping action. The material for the sleeve should be one which can be caused to adhere or cohere to the (steel) barrel. With some sleeve materials it is convenient to treat the surface of the barrel in some suitable way to promote coherence. Some of the very soft and inelastic metals can be used for the sleeve, such as lead or tin or alloys thereof, die-casting metal and the like sweated or otherwise cohesively secured to the barrel. However, the non-metallic materials described are very effective and are lighter.
The outer metallic sleeve is desirable because,
as stated, in combination with the plastic sleeve it damps the barrel vibrations better than does the plastic sleeve alone, even though the vibration transmitting properties of steel are good.
The sleeves can extend the full length of the barrel or only part way, depending on the magnitude of the barrel whip to be overcome and on the shape of the barrel. In barrels of high breech-diameter to muzzle-diameter ratio, the sleeves need extend only partway back from the muzzle. The invention can be applied to advantage to various forms of small arms, rifled or smooth-bore: rifles, sub-machine guns, pistols, etc. The relative thicknesses of the sleeves depend on the particular barrel under construction. The thicknesses of the sleeves can vary along the length of the barrel if desired. While the invention permits a very light barrel construction it can of course be embodied in heavier barrels where weight is desirable, as in target rifles.
What I claim is:
1. In a gun barrel construction adapted to wherein the sleeve of inelastic soft material is a fiber-containing plastic material.
4. The .gun barrel construction of claim 1, wherein the sleeve of inelastic soft material is a metal of the physical character of lead.
5. In a gun barrel construction for the suppression of barrel whip, the combination which comprises a sleeve of inelastic non-metallic plastic material of poor vibration-transmitting properties cohesively bonded to the gun barrel.
JOHN W. HOGG.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US325055A US2249899A (en) | 1940-03-20 | 1940-03-20 | Gun barrel construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US325055A US2249899A (en) | 1940-03-20 | 1940-03-20 | Gun barrel construction |
Publications (1)
Publication Number | Publication Date |
---|---|
US2249899A true US2249899A (en) | 1941-07-22 |
Family
ID=23266251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US325055A Expired - Lifetime US2249899A (en) | 1940-03-20 | 1940-03-20 | Gun barrel construction |
Country Status (1)
Country | Link |
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US (1) | US2249899A (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2541116A (en) * | 1943-10-27 | 1951-02-13 | Ohio Crankshaft Co | Hardened metallic structure |
US2845741A (en) * | 1955-04-27 | 1958-08-05 | Olin Mathieson | Composite firearm barrel |
US2935913A (en) * | 1956-04-24 | 1960-05-10 | Olin Mathieson | Gun barrel |
US2967368A (en) * | 1958-07-31 | 1961-01-10 | Selden T Williams | Mounting of gun barrel in its stock |
US3029540A (en) * | 1960-07-25 | 1962-04-17 | Frank A Pachmayr | Gun choke mounting apparatus |
DE1136613B (en) * | 1957-05-06 | 1962-09-13 | Olin Mathieson | Compound gun barrel |
US3299558A (en) * | 1965-08-27 | 1967-01-24 | Karl Anthony Robert | Metal gun barrel with encircling plastic layer and integral plastic sight |
DE4016669A1 (en) * | 1990-05-23 | 1991-11-28 | Haemmerli Ag Sportwaffenfabrik | Barrel esp. for hand gun - with vibration damping provided by cast metallic or plastics material |
US5661255A (en) * | 1995-11-07 | 1997-08-26 | Briley Manufacturing Co. | Weapons barrel stabilizer |
US6664456B2 (en) | 2001-04-03 | 2003-12-16 | Philip Momchilovich | Harmonic vibration damping device for musical instruments and firearms |
US6889464B2 (en) | 2003-06-04 | 2005-05-10 | Michael K. Degerness | Composite structural member |
US20110113667A1 (en) * | 2009-05-07 | 2011-05-19 | Teludyne Tech Industries, Inc. | Weapons System Construction And Modification |
US8413571B2 (en) | 2010-05-12 | 2013-04-09 | Teludyne Tech Industries, Inc. | Weapons system construction and modification including improved gas management system |
US8794122B2 (en) | 2011-05-12 | 2014-08-05 | Zike, Llc | Weapons system construction and modification including improved gas management system |
US20150316342A1 (en) * | 2014-01-29 | 2015-11-05 | Kemlin Hart | Barrel sleeve assembly |
US20160153733A1 (en) * | 2014-01-21 | 2016-06-02 | Richard Rex Hayes | Multi-caliber weapon |
US10401110B2 (en) | 2017-07-21 | 2019-09-03 | Teludyne Tech Industries, Inc. | System for improved weapon system barrel |
US11365948B2 (en) * | 2018-06-13 | 2022-06-21 | Johannes Le Roux Loubser | Barrel flexing mitigation assembly |
US11578941B2 (en) * | 2014-01-29 | 2023-02-14 | Kemlin Hart | Barrel sleeve assembly |
-
1940
- 1940-03-20 US US325055A patent/US2249899A/en not_active Expired - Lifetime
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2541116A (en) * | 1943-10-27 | 1951-02-13 | Ohio Crankshaft Co | Hardened metallic structure |
US2845741A (en) * | 1955-04-27 | 1958-08-05 | Olin Mathieson | Composite firearm barrel |
US2935913A (en) * | 1956-04-24 | 1960-05-10 | Olin Mathieson | Gun barrel |
DE1136613B (en) * | 1957-05-06 | 1962-09-13 | Olin Mathieson | Compound gun barrel |
US2967368A (en) * | 1958-07-31 | 1961-01-10 | Selden T Williams | Mounting of gun barrel in its stock |
US3029540A (en) * | 1960-07-25 | 1962-04-17 | Frank A Pachmayr | Gun choke mounting apparatus |
US3299558A (en) * | 1965-08-27 | 1967-01-24 | Karl Anthony Robert | Metal gun barrel with encircling plastic layer and integral plastic sight |
DE4016669A1 (en) * | 1990-05-23 | 1991-11-28 | Haemmerli Ag Sportwaffenfabrik | Barrel esp. for hand gun - with vibration damping provided by cast metallic or plastics material |
US5661255A (en) * | 1995-11-07 | 1997-08-26 | Briley Manufacturing Co. | Weapons barrel stabilizer |
US6664456B2 (en) | 2001-04-03 | 2003-12-16 | Philip Momchilovich | Harmonic vibration damping device for musical instruments and firearms |
US6889464B2 (en) | 2003-06-04 | 2005-05-10 | Michael K. Degerness | Composite structural member |
US20110113667A1 (en) * | 2009-05-07 | 2011-05-19 | Teludyne Tech Industries, Inc. | Weapons System Construction And Modification |
US8413571B2 (en) | 2010-05-12 | 2013-04-09 | Teludyne Tech Industries, Inc. | Weapons system construction and modification including improved gas management system |
US8794122B2 (en) | 2011-05-12 | 2014-08-05 | Zike, Llc | Weapons system construction and modification including improved gas management system |
US20160153733A1 (en) * | 2014-01-21 | 2016-06-02 | Richard Rex Hayes | Multi-caliber weapon |
US20150316342A1 (en) * | 2014-01-29 | 2015-11-05 | Kemlin Hart | Barrel sleeve assembly |
US11578941B2 (en) * | 2014-01-29 | 2023-02-14 | Kemlin Hart | Barrel sleeve assembly |
US10401110B2 (en) | 2017-07-21 | 2019-09-03 | Teludyne Tech Industries, Inc. | System for improved weapon system barrel |
US11365948B2 (en) * | 2018-06-13 | 2022-06-21 | Johannes Le Roux Loubser | Barrel flexing mitigation assembly |
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