US3148620A - Wear reduction additives - Google Patents

Wear reduction additives Download PDF

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Publication number
US3148620A
US3148620A US126747A US12674761A US3148620A US 3148620 A US3148620 A US 3148620A US 126747 A US126747 A US 126747A US 12674761 A US12674761 A US 12674761A US 3148620 A US3148620 A US 3148620A
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United States
Prior art keywords
charge
layer
cartridge
additive
substance
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Expired - Lifetime
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US126747A
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English (en)
Inventor
David E Jacobson
Stig Y Ek
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Wegematic Corp
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Wegematic Corp
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Publication date
Priority to DENDAT1287492D priority Critical patent/DE1287492B/de
Priority to NL292692D priority patent/NL292692A/xx
Application filed by Wegematic Corp filed Critical Wegematic Corp
Priority to US153299A priority patent/US3204558A/en
Priority to GB1057662A priority patent/GB995549A/en
Application granted granted Critical
Publication of US3148620A publication Critical patent/US3148620A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/24—Cartridges, i.e. cases with charge and missile for cleaning; for cooling; for lubricating ; for wear reducing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/16—Cartridges, i.e. cases with charge and missile characterised by composition or physical dimensions or form of propellant charge, with or without projectile, or powder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S102/00—Ammunition and explosives
    • Y10S102/704—Coolants

Definitions

  • compositions, and methods of applying the compositions, for reducing erosiOn in a mem ber subjected to hot flowing gases More particularly, the present invention provides compositions and methods of reducing wear normally attendant with the use of known propellant charges in firearm barrels, and the description of the invention is here made in connection with this function.
  • cartridge is meant a case, capsule, shell or bag holding a propellant charge for a firearm; in small arms and some guns the cartridge also includes the pro- 'ectile. J
  • This application is a continuation-in-part of our two copending applications Serial Nos. 46,008 and 46,009, filed July 28, 1960. Application Serial No. 46,009 is now abandoned.
  • barrel wear is reduced by the preferred embodiments of the present invention by incorporating in the cartridge, a first material which upon firing of the cartridge will inhibit temperature and erosion wear on the gun barrel surface. It is thought this is accomplished by forming an erosion resistant layer on the barrel surface when the cartridge is fired.
  • a second material may be advantageously included which will produce gases relatively cool in comparison with the hot products of combustion of the main charge and which act to insulate the barrel forming a cool gaseous layer be tween the hot propellant gases and the barrel.
  • the mate rials may be utilized with any conventional propellants to reduce the normal wear effects produced thereby.
  • the present invention provides protection against wear on metal members superior to prior art methods.
  • this invention for the first time contemplates forming temperature and erosion resistant inhibitors to extend the life of firearm barrels and other metal members subjected to hot flowing gases.
  • this invention also provides gaseous insulation layers superior to such insulation disclosed by Patten by using more efficient materials, and in a much simpler and more economical manner as will be described hereinafter.
  • Another object of this invention is to provide novel arrangements of an additive layer with respect to a propellant charge.
  • a further object of this invention is to provide additive materials for reducing wear in a gun barrel which are applied in a cartridge, around the propellant charge by being secured either to the inner wall of the cartridge case, to the textile or other like bag containing the propellant charge, or directly to the charge.
  • Still another object of this invention is to provide an additive layer for a cartridge which is simply and eco nomically applied and which is retained in position by a suitable securing means.
  • a special advantage of the cartridge of the invention is the unchanged characteristics of the internal ballistics compared with the untreated charge. We have for instance found that the muzzle velocity and pressure are unchanged.
  • FIGURE 1 is a front elevation view, partly broken away, of a cartridge embodying the preferred additive of the present invention.
  • FIGURE 2 is a view of an unfolded sheet utilized in the cartridge of FIGURE 1;
  • FIGURE 3 is a side elevation view of the sheet shown in FIGURE 2;
  • FIGURE 4 is an elevation view of a cartridge, partly broken away, illustrating a modification of the present invention
  • FIGURE 5 is a front elevation view of a cartridge, partly broken away, illustrating another embodiment of the present invention.
  • FIGURE 6 is a front elevation View of a cartridge, partly broken away, illustrating a further modification of the present invention.
  • FIGURES 7-l2 are also elevation views of cartridges partly broken away, illustrating further modifications of the present invention as will be described. It will be appreciated that the drawings herein illustrate diagrammatically the use of additives in accord with the present q) invention and that the proportions are not necessarily to scale.
  • the additive may consist of a layer forming material or a cool gas forming material alone.
  • an additive is incorporated in a cartridge which it is thought, produces n firing, a temperature and erosion resistant layer on the inner surface of a gun barrel by suspending a layer forming substance in the hot, rapidly flowing gases of the firearm which is capable of combining with the material on the inside surface of the gun barrel.
  • the layer is comprised of nitrides, oxides or carbides, and that the layer protects the barrel from and is then partly removed by the hot combustion gases formed by the rear part of the charge.
  • the additive may be applied in several ways, but in general it is preferred that the layer forming substance be dispersed in a continuous layer of the second substance around the propellant charge.
  • the layer forming substance be dispersed in a continuous layer of the second substance around the propellant charge.
  • the first, or metallic temperature and erosion resistant layer forming substance preferably comprises an element which can form a high melting nitride, oxide, or carbide and is one or more of the following: aluminum, boron, titanium, vanadium, chromium, niobium, tantalum or tungsten.
  • an individual element may have a combustion temperature above that of the hot flowing gases and if used as a powder additive, may actually increase barrel wear. Therefore, it is generally preferable for the layer forming substance to be a compound which contains one or more of the above elements and which does not cause a rise in temperature of the combustion gases.
  • the following metallic temperature and erosion re sistant layer forming compounds have been found to give very good results in cartridges, and it is thought that they may have a similar effect in other members particularly steel members subjected to hot rapidly flowing gases: a salt of aluminum and an inorganic acid, especially aluminum fluoride, hydrated aluminum fluoride (AlF 3H O), potassium titanium fluoride, chromium fluoride, vanadium pentoxide, titanim oxide (TiO niobium oxide (Nb O tantalum oxide (T111 0 and tungsten oxide 3)-
  • the second or a carbonaceous carrier material capable of forming relatively cool gas is preferably used to position the metallic erosion resistant layer forming material in place.
  • the carrier invariably contains a substantial amount of carbon i.e., about 30% by weight or more.
  • the metallic compound or compounds When the metallic compound or compounds are dispersed in the propellant charge, or placed in the cartridge other than by dispersion in the carrier material, the latter may nevertheless, be employed by itself to render a cooling effect upon firing. Best results have been obtained using wax as a second substance, preferably paraffin (approximately 85% carbon) having a melting point between 50 and 100 C. or ozokerite Wax having the same or higher melting point.
  • paraffin approximately 85% carbon
  • ozokerite Wax having the same or higher melting point.
  • examples, of other very suitable materials are:
  • Alkyd resin paint (approximately 70% carbon) for example China-Lac currently produced by Vorch Backsin and Co. of Gothenburg, Sweden.
  • Plastic polyethylene, cellulose acetate, nylon, etc.
  • GreaseAny lubricating grease such as petroleum jelly (e.g. petrolatum), a petroleum or synthetic lubricating oil thickened with a metal salt of a fatty acid such as aluminium palmitate calcium palmitate or stearate etc., or an oil thickened with a bentonitic clay and commonly used in lubricated ball valves.
  • petroleum jelly e.g. petrolatum
  • a petroleum or synthetic lubricating oil thickened with a metal salt of a fatty acid such as aluminium palmitate calcium palmitate or stearate etc.
  • an oil thickened with a bentonitic clay commonly used in lubricated ball valves.
  • waxes such as ceresin and beeswax.
  • the materials be utilized in combination, as for example a dispersion of the first substance in a layer of the second cool gas forming substance.
  • Very small amounts of the first substance have a beneficial effect while too large an amount may have an adverse efiect on the propellant power obtainable in a cartride of a certain size.
  • the first substance should constitute between -0.0l20% by weight of the propellant charge, and more preferably should be present between .05 and 5% by weight of the charge.
  • the type propellant used introduces only minor variations in test results and the stated percentages are therefore applicable to any conventional single, double, or triple base powder.
  • the part of the layer adjacent the front part of the charge is more effective than the part of the layer adjacent the rear end of the charge: in fact, if the layer extends the whole length of the charge, the rear half of the layer has little elfect; and it is the front half, especially the front /3, and particularly the front which has most effect in absorbing heat from that part of the propellant gases which cause the barrel wear.
  • the time for the projectile to travel down the barrel is relatively long, for example 7 /2 cms. guns, the part of the substance beyond the front of the charge is fairly effective, especially when using the first substance, and in cartridges for such guns the substance should preferably surround at least the front half, and preferably the front /6 of the charge.
  • C is the calibre of the firearm in cms.; and cm. refers to the area of the layer.
  • the weight of the second substance, such as those mentioned above, which surrounds the front third of the charge should be between 0.05% and 30%, advantageously between 0.5% and 10%, of the weight of the total propellant charge.
  • the first substance may be dispersed by mechanical mixing throughout the propellant charge.
  • good results have been obtained by dispersing (AlF 3H O) (about 1% of the charge weight) throughout the charge of a 37 mm. gun.
  • surprisingly good results have been obtained by dispersing the first substance in fine particles throughout the second substance and applying the mixture in a continuous layer around the charge, either directly on the charge, on fabric covering the charge, or on the inner wall of the case.
  • the primary reason for maintaining the additives and charge separate is that the gas flow in the barrel on combustion of the charge is to a certain extent, laminar.
  • additive materials are advantageously arranged so that they surround the charge.
  • FIGURE 1 The referred form of the invention is illustrated in FIGURE 1 wherein a cartridge is shown having a metal case 20, propellant charge 24 comprised of propellant strips as is well known, and a projectile 28.
  • a textile wrap 32 Surrounding charge 24 is a textile wrap 32 which may be of any suitable material such as rayon (preferred) cotton, silk or other conventional materials.
  • the upper section of wrap 32 has a plurality of vertical slits 36 shown therein through part of its length which form flaps 40 as shown in FIGURE 2. Flaps 40 are adapted to be folded in overlapping manner over the upper surface of propellant charge 24.
  • Textile 32 is coated, or coated and impregnated with an additive layer 44 composed of powdered tungsten oxide (W0 dispersed in paraffin wax (melting point approximately 70 0), preferably 1 part by weight of wax to 2 parts by Weight of tungsten oxide. It is preferred that the latter have the texture of talc since smaller particles have generally provided better results for all first substances.
  • W0 powdered tungsten oxide
  • paraffin wax melting point approximately 70 0
  • tungsten oxide preferably 1 part by weight of wax to 2 parts by Weight of tungsten oxide. It is preferred that the latter have the texture of talc since smaller particles have generally provided better results for all first substances.
  • conventional triple base powder composed primarily of nitrocellulose, nitroguanidine and nitroglycerine (calorific value 850) was employed, it was found that optimum results were obtained utilizing additives constituting 3% by weight of the propellant charge.
  • the additive coating is prepared by melting the wax and thereafter mixing with powdered tungsten oxide. Thereafter, the coating is applied to the fabric in the desired thickness and permitted to cool.
  • the thickness ratio of the top and bottom portions of layer 44- is approxi- 5 mately 3 to 1.
  • the thickness of layer 44 applied to flap sections 40 is substantially the same as the maximum thickness along the sides of the charge.
  • Coated fabric 32 which is preferably one-half to fivesixths the length of the charge, may be wrapped around the strips of charge 24 or it may be held in position in the cartridge as the propellant material is poured in. Thereafter flaps 40 are folded over and projectile 28 is placed on top of the flaps as shown in FIGURE 1.
  • fabric 32 may be secured to the inner wall of the case by glue or other suitable means so as to retain the coated fabric in position.
  • FIGURE 4 the arrangement of first and second substances to the charge is the same as that described in connection with FIGURE 1 however, layer 44 is covered with a paper layer 48 or other suitable combustible material for the purpose of further protecting the first and second substances from the effects of heat or vibrations.
  • FIGURE 5 a cartridge having a case 52, charge 56, and projectile 60.
  • An additive layer 64 embodying a first and a second substance dispersed therein, is positioned around the charge on the interior surface of casing 52. Adjacent the interior surface of the additive layer 64 is an optional sheet 68 of suitable combustible material, e.g. paper, celluloid, nitrated cotton, wax paper, thin fabric, etc. Layer 64 extends along a substantial length of the case to a point closely adjacent the lower portion of projectile 60. The advantage of this is that the additive material will be made immediately available in highly concentrated form to protect the portion of the barrel, usually eroded most severely.
  • the adhesiveness of the second substance itself will generally be sufiicient to hold the additive layer securely in place on the casing wall, particularly where the first substance is dispersed in a layer of carbonaceous carrier material such as cellulose enamel or alkyd resin paint for example.
  • layer 68 is composed is selected to afford at least slight cooling effect (in the manner of a second substance) when the round is fired, but more importantly it helps retain additive layer 64 in position and also protects it from deteriorating influences. It will be understood that layer 68 is not essential, but desirable where for example, the cartridges may be stored or used in hot climate or transported over rugged terrain.
  • the area of the inner casing surface to be contacted by layer 64 may be coated with a thin layer of glue or other suitable material to produce a rough surface before additive layer 64 is applied.
  • a thin coarse fabric such as gauze or the like may be applied to the casing inner surface by means of a suitable adhesive for receiving and holding the second substance and dispersed first substance in place.
  • the first and second substances may be retained on the case wall by being impregnated into layer of porous material having interstitially connected pores such as foam or sponge runbber or foam plastic.
  • the rubber may serve as a coolant substance the first substance may be applied in a slurry to the porous material and dried.
  • FIGURE 6 illustrates a cartridge similar to that shown in FIGURE with an additive layer 80 disposed on the inner surface of case 84 around charge 88 but without a thin intermediate textile or paper separating the charge and layer 80. Also, layer 80 is of uniform thickness throughout its length.
  • the cartridge shown in FIGURE 7 comprises a case 109, a charge 104 consisting of strips tied together by string 106, and a layer 110 of powdered vanadium pentoxide dispersed in an alkyd resin paint applied to the upper part of the inner wall of the cartridge case.
  • the vanadium pentoxide constitutes 60% by weight of the layer.
  • the thickness of the layer is 0.5 mm.; its length is 50 mm.; and its weight is 3 grams.
  • the cartridge shown in FIGURE 8 utilizes, for example aluminium fluoride or other first substance contained in a bag 114 located within textile container 118.
  • the wear reduction obtained with this cartridge is not as great as the wear reduction obtained in the cartridges shown in FIGURE 7, probably because the additive does not surround the charge.
  • the cartridge shown in FIGURE 9 comprises a case 120, strips 124 tied together by string 128, and an additive layer 132.
  • the first substance for example pulverulent aluminium fluoride (AlF 3H O) is contained in a plastic ring such as polyethylene for example, located at the upper end of the cartridge case.
  • the additive layer is relatively thick and short. The increase cross section of the layer enables the gas pressure to readily remove the material from the case into the barrel.
  • the cartridge of FIGURE 10 is substantially the same as the cartridge of FIGURE 7.
  • the vanadium pentoxide 133 is however not dispersed in an alkyd resin paint but is fixed to the inside of the case by a non-organic or organic adhesive.
  • the cartridge shown in FIGURE 11 comprises a case 134, a charge 138 contained in a textile bag, and a coating 42 on the upper part of the charge.
  • the coating extends 10 cms. downwardly from the top of the container and consists of a cellulose enamel containing 70% of vanadium pentoxide. The weight of coating per sq. cm. is 50 mgs.
  • the cartridge shown in FIGURE 12 comprises a case 146, a charge 150 and a length of textile 154 wrapped around the upper part of the strips to form a layer containing the two substances.
  • the textile length is coated with an alkyd resin paint 158 containing powdered aluminum fluoride in about 60% of the weight of the dried layer.
  • the coated length 154 extends 10 cms. downwardly from the top of the propellant.
  • the weight per sq. cm. of the layer is 70 mgs.
  • Tests were carried on with a 20 mm. automatic cannon in which conventional cartridges and cartridges containing different forms of the first substance mechanically mixed with and dispersed throughout the powder were used.
  • the powder used was 7 hole N-C powder, and the total weight of the charge was 37 grams.
  • the initial muzzle velocity was 840 metres/ second, and each test consisted of 2 series of firings each of 25 rounds.
  • the cannon was fitted with a removable sleeve in the area between the chamber and the rifled portion of the barrel. After the firing the sleeve was removed and the wear was ascertained by weighing the sleeve.
  • Sheet was 0.8 mm. thick and contained 20% by weight of CrF M00 M00 dispersed in varnish (Ferbo- 35 lack) applied to a 0.15 mm. thick celluloid foil wrapped around the charge.
  • the length of the layer was 10 cms., and 6 grams of M00 was applied to the foil.
  • thick celluloid foil wrapped around charge The length of the layer was 10 cms.
  • NEQBAOZ As a powder dispersed throughout the charge. Powder 2.5% by weight of the charge.
  • the layer was 50 mm. in length and 0.5 mm. in thickness and contained 50% by weight of W0 although 50- 70% has been used successfully. Or instead of W0 N 10 05 was used with equally good results.
  • the layer was 50 mm. in length and 0.5 mm. thick, and contained 50% by weight of Ta 05.
  • a parailin wax layer on the inside of the cartridge case.
  • the layer was 50 min. in length and 0.5 mm. thick, and contained 50% by weight of 'liO W0 less than 5 T o. less than 5 T102 less than 5 is a reduction of parafiin wax having a melting point of 70 C. was wound once around the front of the tubes of conventional double base nitrocellulose powder containing nitroglycerine housed in a metal case. Powdered tungsten oxide was dispersed in the wax, and constituted 50% by weight of the wax and the weight of the coated textile length was 3% by weight of the charge. Similar tests with nearly equally good results, have been carried out with TiO used in place of W in the same amount.
  • the first substance reduces barrel wear further from the chamber than does the second substance.
  • the coolant second substance may cooperate with the first substance by producing an environment more favorable physical and chemical to the formation of an effective temperature and erosion resistant layer.
  • the second substancee may be used alone arranged in the cartridge in the manner shown and described for the various additive layer positions and arrangements.
  • the relative amount of the second substance as aforesaid, should be between about .05 to 30% of the charge weight for all conventional powders.
  • first substance in the powder charge when used alone, or to place a quantity of the substance on top of the charge strips allowing some to migrate into the space between the strips.
  • the amount of first substance used in its individual application is the same as used in com bination with the second substance.
  • a substance in powder form dispersed within said layer said substance being selected from the group consisting of the oxides of titanium, tungsten, vanadium, tantalum and niobium and said substance being in an amount sufiicient to produce a temperature resistant barrel protector upon firing of said charge.
  • a substance in powder form dispersed within said layer said substance being an oxide of a metal selected from the group consisting of titanium, tung sten, vanadium, tantalum and niobium and present in an amount suflicient to produce a temperature resistant barrel protector upon firing of said cartridge.
  • a cartridge as defined in claim 5 further having a flexible sheet material coated with said additive and surrounding said propellant charge, with portions of said sheet cut and folded as flaps over the front end of said propellant charge whereby said additive is adapted to be readily delivered into said barrel upon firing of said charge.
  • a cartridge as defined in claim 9 further comprising a protective, combustible cover on said carrier material.
  • a single projectile for propelling the projectile through the gun barrel; an additive for reducing gun barrel wear resulting from firing of such projectiles, said additive containing as an essential active ingredient a metal compound in powder form which in contact with the hot propellant gases produced by burning of the propellant charge causes no material rise of the temperature at the firing, said metal compound being an oxide of a metal selected from the group consisting of titanium, tungsten, vanadium, tantalum and niobium, said additive being present in a quantity sufificient to provide the inside surface of the gun barrel with a temporary protection having high resistance to temperature and wear.
  • a method of reducing gun barrel wear in a firearm when firing a shot having a single projectile and a propellant charge comprising introducing into the chamber of the firearm before its discharge an additive containing as an essential element a metal compound in powder form which in contact with the hot propellant gases produced by burning of the propellant charge causes no material rise of the temperature at the discharge, said metal compound being an oxide of a metal selected from the group consisting of titanium, tungsten, vanadium, tantalum, and niobium, the quantity of said additive being sufiicient to provide the inside surface of the gun barrel with a layer to compensate for barrel wear due to erosion, and firing said projectile through said gun barrel by igniting said propellant charge to produce said hot propellant gases.
  • a single projectile for use in a gun barrel, in combination: a single projectile; an explosive charge which when fired produces hot propellant gases for propelling the projectile through the gun barrel; an additive for reducing gun barrel wear resulting from firing of such projectiles, said additive being an oxide selected from the group consisting of tita nium, tungsten, vanadium, tantalum and niobium and mixtures thereof, and being present in a quantity suflicient to provide on the inside surface of the gun barrel a tem porary protection having high resistance to temperature and wear.
  • a method of reducing gun barrel wear in a firearm when firing a shot having a single projectile and a propellant charge comprising introducing into the chamber of the firearm before its discharge an additive for reducing gun barrel wear, said additive being a finely divided powdery substance having the physical and chemical properties of causing no material rise in temperature of the hot propellant gases at firing and of producing on firing a temperature and erosion resistant layer on the inside surface of the gun barrel by suspending a layer forming substance in the hot rapidly flowing gases emanating from the propellant charge, said additive being an oxide selected from the group of metals consisting of titanium, tungsten, vanadium, tantalum and niobium and mixtures thereof, the amount of the additive introduced being sufficient to provide on the inside surface of the gun barrel a temporary protection having high resistance to temperature and wear, and firing said projectile through said gun barrel by igniting said propellant charge to produce said hot propellant gases.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Lubricants (AREA)
  • Mold Materials And Core Materials (AREA)
  • Paints Or Removers (AREA)
US126747A 1959-08-14 1961-05-29 Wear reduction additives Expired - Lifetime US3148620A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DENDAT1287492D DE1287492B (en, 2012) 1961-03-22
NL292692D NL292692A (en, 2012) 1959-08-14
US153299A US3204558A (en) 1959-08-14 1961-11-20 Wear reduction additives
GB1057662A GB995549A (en) 1961-03-22 1962-03-20 Wear reduction additives for ammunition cartridges and the like

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE758259 1959-08-14
SE819959 1959-09-04
SE1025959 1959-11-03

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US3148620A true US3148620A (en) 1964-09-15

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US126747A Expired - Lifetime US3148620A (en) 1959-08-14 1961-05-29 Wear reduction additives

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US (1) US3148620A (en, 2012)
BE (1) BE642630A (en, 2012)
DE (2) DE1158427B (en, 2012)
GB (3) GB950609A (en, 2012)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282215A (en) * 1965-04-30 1966-11-01 Roth Milton Additives for reduction of gun wear
US3362328A (en) * 1966-01-24 1968-01-09 Army Usa Wear reduction additives
US3392670A (en) * 1966-01-24 1968-07-16 Army Usa Erosion reducer
US3392669A (en) * 1966-01-24 1968-07-16 Army Usa Erosion reducer
US3398683A (en) * 1965-05-08 1968-08-27 Rheinmetall Gmbh Blank cartridge
US3424088A (en) * 1966-05-27 1969-01-28 Rheinmetall Gmbh Blank rounds of ammunition
US3429261A (en) * 1965-10-06 1969-02-25 Herbert M Goldstein Round of fixed ammunition having improved gun bore erosion characteristics
US3446146A (en) * 1965-12-28 1969-05-27 Dynamit Nobel Ag Artillery cartridge
US4098193A (en) * 1976-09-08 1978-07-04 The United States Of America As Represented By The Secretary Of The Army Wear and corrosion reducing additive for gun propellants
FR2382419A1 (fr) * 1977-03-03 1978-09-29 Rheinmetall Gmbh Procede pour produire et obtenir une couche protectrice calorifuge anti-erosive sur la surface interieure de canons d'armes
FR2571489A2 (fr) * 1981-09-22 1986-04-11 Herstal Sa Munition perfectionnee
US5052304A (en) * 1989-07-28 1991-10-01 Rheinmetall Gmbh Propelling charge container
FR2717570A1 (fr) * 1994-03-16 1995-09-22 Giat Ind Sa Munition comportant un appoint anti-usure.
WO1995028612A1 (en) * 1994-04-19 1995-10-26 Bofors Ab Method of providing fixed ammunition with an additive which limits barrel wear, and ammunition produced in accordance therewith
EP1059505A1 (fr) 1999-06-08 2000-12-13 Snpe Douille métallique de munition pour armes à feu interieurement revêtue d'un manchon anti-érosif
EP1110927A1 (fr) * 1999-12-23 2001-06-27 Giat Industries Additif pour chargement propulsif, notamment additif anti-usure, objet combustible et chargement propulsif incorporant un tel additif
US8516964B2 (en) 2007-08-21 2013-08-27 Rheinmetall Waffe Munition Gmbh Cartridge

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1578199B1 (de) * 1966-01-24 1970-03-05 Prb Nv Kartusche od.dgl.fuer Feuerwaffen
US4328750A (en) * 1978-10-26 1982-05-11 Bangor Punta Corporation Plastic coated ammunition and methods of manufacture
US4378256A (en) 1980-02-06 1983-03-29 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Reducing gun erosion by transfer and diffusion coating
NO842860L (no) * 1983-07-13 1986-01-13 Herstal Sa Anordning ved ammunisjon.
GB2164426A (en) * 1984-09-12 1986-03-19 Herstal Sa Ammunition

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US864725A (en) * 1907-07-25 1907-08-27 Cleland Davis Envelop for powder charges.
US1187779A (en) * 1914-10-02 1916-06-20 Wilbur Miller C Ammunition.
US1316786A (en) * 1918-02-16 1919-09-23 Paul Gerli Powder-container or the like.
US1336463A (en) * 1919-08-23 1920-04-13 Du Pont Propellent powder and process of making same
US1733177A (en) * 1927-09-10 1929-10-29 Remington Arms Co Inc Liquid coating composition
US2131353A (en) * 1936-12-18 1938-09-27 Hercules Powder Co Ltd Propellant explosive
US2159234A (en) * 1935-03-11 1939-05-23 Ici Ltd Gas-producing nondetonating composition
US2299466A (en) * 1935-02-08 1942-10-20 Roscoe A Coffman Power generating unit and igniting means therefor
US2301043A (en) * 1941-01-09 1942-11-03 Hardy Metallurg Company Antifouling of firearms
US2309978A (en) * 1940-06-21 1943-02-02 Atlas Powder Co Propellent fuel assembly
US2637274A (en) * 1946-11-29 1953-05-05 Ici Ltd Power-gas generating device
US2744816A (en) * 1947-10-10 1956-05-08 Ici Ltd Solid gas-generating charges
US2919647A (en) * 1953-05-25 1960-01-05 Olin Mathieson Ammunition
US3009796A (en) * 1951-03-08 1961-11-21 Ralph F Preckel Gas-producing compositions of smokeless powder and metal compound inhibitors
US3033717A (en) * 1955-04-14 1962-05-08 Hercules Powder Co Ltd Gas-producing charge
US3054258A (en) * 1957-10-28 1962-09-18 Standard Oil Co Temperature rise retardation of surfaces exposed to heat

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522113A (en) * 1948-01-02 1950-09-12 Daniel And Florence Guggenheim Means for cooling powder-burning combustion chambers and nozzles
US2522123A (en) * 1948-07-02 1950-09-12 Klein Arthur Hair curler
DE1032032B (de) * 1954-06-10 1958-06-12 Hans Georg Mebus Dipl Ing Verfahren zur Verminderung der Waermebeanspruchung von Raketenbrennkammern

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US864725A (en) * 1907-07-25 1907-08-27 Cleland Davis Envelop for powder charges.
US1187779A (en) * 1914-10-02 1916-06-20 Wilbur Miller C Ammunition.
US1316786A (en) * 1918-02-16 1919-09-23 Paul Gerli Powder-container or the like.
US1336463A (en) * 1919-08-23 1920-04-13 Du Pont Propellent powder and process of making same
US1733177A (en) * 1927-09-10 1929-10-29 Remington Arms Co Inc Liquid coating composition
US2299466A (en) * 1935-02-08 1942-10-20 Roscoe A Coffman Power generating unit and igniting means therefor
US2159234A (en) * 1935-03-11 1939-05-23 Ici Ltd Gas-producing nondetonating composition
US2131353A (en) * 1936-12-18 1938-09-27 Hercules Powder Co Ltd Propellant explosive
US2309978A (en) * 1940-06-21 1943-02-02 Atlas Powder Co Propellent fuel assembly
US2301043A (en) * 1941-01-09 1942-11-03 Hardy Metallurg Company Antifouling of firearms
US2637274A (en) * 1946-11-29 1953-05-05 Ici Ltd Power-gas generating device
US2744816A (en) * 1947-10-10 1956-05-08 Ici Ltd Solid gas-generating charges
US3009796A (en) * 1951-03-08 1961-11-21 Ralph F Preckel Gas-producing compositions of smokeless powder and metal compound inhibitors
US2919647A (en) * 1953-05-25 1960-01-05 Olin Mathieson Ammunition
US3033717A (en) * 1955-04-14 1962-05-08 Hercules Powder Co Ltd Gas-producing charge
US3054258A (en) * 1957-10-28 1962-09-18 Standard Oil Co Temperature rise retardation of surfaces exposed to heat

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282215A (en) * 1965-04-30 1966-11-01 Roth Milton Additives for reduction of gun wear
US3398683A (en) * 1965-05-08 1968-08-27 Rheinmetall Gmbh Blank cartridge
US3429261A (en) * 1965-10-06 1969-02-25 Herbert M Goldstein Round of fixed ammunition having improved gun bore erosion characteristics
US3446146A (en) * 1965-12-28 1969-05-27 Dynamit Nobel Ag Artillery cartridge
US3362328A (en) * 1966-01-24 1968-01-09 Army Usa Wear reduction additives
US3392670A (en) * 1966-01-24 1968-07-16 Army Usa Erosion reducer
US3392669A (en) * 1966-01-24 1968-07-16 Army Usa Erosion reducer
US3424088A (en) * 1966-05-27 1969-01-28 Rheinmetall Gmbh Blank rounds of ammunition
US4098193A (en) * 1976-09-08 1978-07-04 The United States Of America As Represented By The Secretary Of The Army Wear and corrosion reducing additive for gun propellants
FR2382419A1 (fr) * 1977-03-03 1978-09-29 Rheinmetall Gmbh Procede pour produire et obtenir une couche protectrice calorifuge anti-erosive sur la surface interieure de canons d'armes
FR2571489A2 (fr) * 1981-09-22 1986-04-11 Herstal Sa Munition perfectionnee
US5052304A (en) * 1989-07-28 1991-10-01 Rheinmetall Gmbh Propelling charge container
EP0410075A3 (en) * 1989-07-28 1992-03-11 Rheinmetall Gmbh Propellant charge container
FR2717570A1 (fr) * 1994-03-16 1995-09-22 Giat Ind Sa Munition comportant un appoint anti-usure.
EP0674150A1 (fr) * 1994-03-16 1995-09-27 CTA International Munition comportant un appoint anti-usure
WO1995028612A1 (en) * 1994-04-19 1995-10-26 Bofors Ab Method of providing fixed ammunition with an additive which limits barrel wear, and ammunition produced in accordance therewith
US5834673A (en) * 1994-04-19 1998-11-10 Bofors Ab Method of providing fixed ammunition with an additive which limits barrel wear, and ammunition produced in accordance therewith
EP1059505A1 (fr) 1999-06-08 2000-12-13 Snpe Douille métallique de munition pour armes à feu interieurement revêtue d'un manchon anti-érosif
FR2794854A1 (fr) 1999-06-08 2000-12-15 Poudres & Explosifs Ste Nale Douille metallique de munition pour armes a feu interieurement revetue d'un manchon anti-erosif
EP1110927A1 (fr) * 1999-12-23 2001-06-27 Giat Industries Additif pour chargement propulsif, notamment additif anti-usure, objet combustible et chargement propulsif incorporant un tel additif
FR2802918A1 (fr) * 1999-12-23 2001-06-29 Giat Ind Sa Additif pour chargement propulsif, notamment additif antiusure, objet combustible et chargement propulsif incorporant un tel additif
US8516964B2 (en) 2007-08-21 2013-08-27 Rheinmetall Waffe Munition Gmbh Cartridge

Also Published As

Publication number Publication date
GB950608A (en) 1964-02-26
DE1199670B (de) 1965-08-26
BE642630A (en, 2012) 1964-05-15
GB950609A (en) 1964-02-26
DE1158427B (de) 1963-11-28
GB950607A (en) 1964-02-26

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