US2575871A - Granular smokeless propellant powders - Google Patents

Granular smokeless propellant powders Download PDF

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Publication number
US2575871A
US2575871A US775950A US77595047A US2575871A US 2575871 A US2575871 A US 2575871A US 775950 A US775950 A US 775950A US 77595047 A US77595047 A US 77595047A US 2575871 A US2575871 A US 2575871A
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US
United States
Prior art keywords
powders
powder
disc
porosity
granular
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
US775950A
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English (en)
Inventor
Gordon Stuart
Whitworth Edward
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US2575871A publication Critical patent/US2575871A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/02—Interior fittings; Means, e.g. inserts, for holding and packing articles
    • A45C13/03—Means for holding garments
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/18—Nitrates of ammonium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C1/00—Ammonium nitrate fertilisers
    • C05C1/02—Granulation; Pelletisation; Stabilisation; Colouring
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/0066—Shaping the mixture by granulation, e.g. flaking
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
    • C06B23/002—Sensitisers or density reducing agents, foam stabilisers, crystal habit modifiers
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • 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

Definitions

  • the granular smokeless propellent powders of porous structure based on colloided nitrocellulose compositions are characterised in that the powders are provided with at least one burning; surface therethrough, as for example, one or more radial slots or a central perforation with or without one or more radial slots.
  • Figure 2 is a radially slotted variation of v s Figure 1;
  • Figure 3 is representative of a granular smoke less powder perforated flake
  • Figure 4 is a radially slotted variation 3
  • Figure 5 shows as an example the nongeometric arrangement of the powder granules of Figure within-a standard type shotgun shell.
  • a powder charge I0 made up of the granules having a porous structure ⁇ i and perforations 2 and/or radialslots 3 is randomly packed, above which are placed the usual overpowder cardil, wad 8,, .undershot card I, shot 6, overshot card 5. and theseare in turn held in place by the turnover 4.10? casing 13.
  • a granular smokeless propellent powder of porous structure is produced in disc form from; colloided nitrocellulose (-13.25% nitrogen) 100 parts by weight; diphenylamine 1.1 parts by weight, and parts by weight'oi finely divided potassium nitrate in order to provide the re quired deg-rec of porosity for a required ballistic Granular smokeless powders of porous structure throughout in disc form and provided in accordance with the invention. with a central perforation therethrough give substantially the same ignition and ballistic performance when produced from colloided nitrocellulose (13.25% nitrogen) parts by weight, diphenylamine 1.1 parts by weight and potassium nitrate 45-50 parts by weight.
  • i ure l is representative of.
  • a granular smoke Table 1 Charge Sample Porosity derived from- Cartridge Gun weight, 33 7; rs
  • sive base 6 shot. Powder in perforated disc form" 40 pts. potassium nitrate do do 10 2. 94 l, 006
  • compositions in the form of powder grains each enclosing in addition to its pores a plurality of spaces extending through its entire thickness and defining a plurality of surfaces on which the powder grain may burn outwardly.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
US775950A 1947-01-06 1947-09-24 Granular smokeless propellant powders Expired - Lifetime US2575871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB403/47A GB625077A (en) 1947-01-06 1947-01-06 Improvements in or relating to ammonium nitrate

Publications (1)

Publication Number Publication Date
US2575871A true US2575871A (en) 1951-11-20

Family

ID=38463368

Family Applications (3)

Application Number Title Priority Date Filing Date
US775950A Expired - Lifetime US2575871A (en) 1947-01-06 1947-09-24 Granular smokeless propellant powders
US104389A Expired - Lifetime US2616786A (en) 1947-01-06 1949-07-12 Ammonium nitrate in free-flowing form and method of preparing same
US151519A Expired - Lifetime US2616787A (en) 1947-01-06 1950-03-23 Free-flowing ammonium nitrate and method for the production of same

Family Applications After (2)

Application Number Title Priority Date Filing Date
US104389A Expired - Lifetime US2616786A (en) 1947-01-06 1949-07-12 Ammonium nitrate in free-flowing form and method of preparing same
US151519A Expired - Lifetime US2616787A (en) 1947-01-06 1950-03-23 Free-flowing ammonium nitrate and method for the production of same

Country Status (8)

Country Link
US (3) US2575871A (en))
BE (2) BE478739A (en))
CH (3) CH276149A (en))
DE (3) DE838286C (en))
ES (1) ES180598A1 (en))
FR (3) FR1004894A (en))
GB (2) GB625077A (en))
NL (6) NL67217C (en))

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787533A (en) * 1952-12-17 1957-04-02 Olin Mathieson Propellent powder and method for producing same
US2933041A (en) * 1954-04-12 1960-04-19 Phillips Petroleum Co Rocket grain
US3099963A (en) * 1950-12-11 1963-08-06 Dobrin Saxe Outward burning neutral granulation for cast propellants
US3706278A (en) * 1971-02-25 1972-12-19 Us Army Distributed propulsion for guns
US5726378A (en) * 1996-04-01 1998-03-10 Hodgdon Powder Company, Inc. Unitary propellant charge for muzzle loading firearms
US6688232B2 (en) 2001-12-31 2004-02-10 Legend Products Corporation Compressed powder charge for muzzleloader and black powder firearms
USD500830S1 (en) 2001-12-18 2005-01-11 Legend Products Corporation Propellant charge with tapered sidewalls
USD507323S1 (en) 2001-12-18 2005-07-12 Legend Products Corporation Compressed premeasured charge for firearms
US7344610B2 (en) 2003-01-28 2008-03-18 Hodgdon Powder Company, Inc. Sulfur-free propellant compositions
US10767967B2 (en) 2018-08-07 2020-09-08 Thomas Faudree, IV Device for controlling a rate of gas pressure increase in a gun barrel

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123440A (en) * 1964-03-03 Ammonium bromide composition
US3123439A (en) * 1964-03-03 Ammonium bromide composition
NL77005C (en)) * 1950-09-25
DE918388C (de) * 1952-08-23 1954-09-27 Verkaufsgemeinschaft Deutscher Verfahren zur Verhinderung von Syngenit-Ausscheidungen in Fabrikationsprozessen bei der Verarbeitung von Kalirohsalzen
DE967976C (de) * 1953-04-21 1958-01-02 Kali Forschungsanstalt G M B H Verfahren zum Granulieren von Duengemitteln
NL86812C (en)) * 1953-06-01
US2844455A (en) * 1953-09-25 1958-07-22 Monsanto Chemicals Fertilizer manufacture
DE946889C (de) * 1953-11-29 1956-08-09 Phoenix Gummiwerke Ag Verfahren zum UEberziehen von feinkristallinen Ammoniumsalzen
US2943928A (en) * 1955-05-13 1960-07-05 Phillips Petroleum Co Method for improving the storage stability of ammonium salts
US2930683A (en) * 1955-08-08 1960-03-29 Phillips Petroleum Co Ammonium nitrate composite propellant and method of preparation
US2885262A (en) * 1955-08-22 1959-05-05 Olin Mathieson Stabilized manganese dioxide
BE550924A (en)) * 1955-09-09
US2975046A (en) * 1959-02-02 1961-03-14 Spencer Chem Co Ammonium nitrate explosive composition
DE1141268B (de) * 1960-02-04 1962-12-20 Dynamit Nobel Ag Verfahren zur Herstellung von nicht zusammenbackendem Ammoniumnitrat
US3037842A (en) * 1960-02-17 1962-06-05 Dow Chemical Co Ammonium bromide composition
NL268086A (en)) * 1960-08-11 1900-01-01
US3116185A (en) * 1960-08-18 1963-12-31 Phillips Petroleum Co Method of reducing the caking of nitrogen-containing compound
DE1155100B (de) * 1961-03-07 1963-10-03 Nitroglycerin Ab Verfahren zur Herstellung von nichtbackendem Ammoniumnitrat
US3230038A (en) * 1962-05-04 1966-01-18 Phillips Petroleum Co Storage stability of ammonium nitrate
US3325276A (en) * 1963-05-08 1967-06-13 Huber Corp J M Method of improving anticaking in ammonium nitrate fertilizers
US3544297A (en) * 1967-05-26 1970-12-01 Petro Chem Co Inc Anticaking treatment of urea by polymerized resins
EP0025642B1 (en) * 1979-09-18 1984-01-25 Imperial Chemical Industries Plc Comminuted crystalline material, aqueous suspensions thereof and methods for the preparation of said comminuted material and said suspensions
US4717555A (en) * 1986-01-29 1988-01-05 Desoto, Inc. Anticaking and antidusting composition for ammonium nitrate
US5527498A (en) * 1994-09-15 1996-06-18 Arcadian Fertilizer, L.P. Method for production of high density ammonium nitrate prills
US5486246A (en) * 1994-09-15 1996-01-23 Arcadian Fertilizer, L.P. High density ammonium nitrate prill and method of production of the same
FR2743797B1 (fr) * 1996-01-24 1998-02-13 Poudres & Explosifs Ste Nale Nitrate d'ammonium stabilise
DE19923202B4 (de) * 1999-05-20 2004-09-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Mikroverkapseln von Partikeln aus feuchtigkeitsempfindlichen Treib- und Explosivstoffen sowie mikroverkapselte Partikel aus solchen Treib- und Explosivstoffen
WO2018183562A1 (en) * 2017-03-28 2018-10-04 Verdesian Life Sciences, U.S., Llc Triarylmethane compounds for controlling enzyme-induced urea decomposition
EP3418267A1 (en) * 2017-06-23 2018-12-26 YARA International ASA Improvement of anti-caking properties of ammonium nitrate particles that are stored in a closed container

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189417994A (en) * 1894-09-21 1895-07-27 Hiram Stevens Maxim Improvements relating to Smokeless Explosives.
US677527A (en) * 1899-08-24 1901-07-02 Hudson Maxim Cartridge.
US726901A (en) * 1899-05-27 1903-05-05 George Whitman Mcmullen Explosive charge.
US751385A (en) * 1904-02-02 Cleland davis
US802347A (en) * 1903-07-17 1905-10-17 Henry C Aspinwall Perforated powder-grain.
US899577A (en) * 1907-08-09 1908-09-29 George Henry Wadsworth Art of producing gelatinized nitrocellulose explosives.
US1077320A (en) * 1913-02-20 1913-11-04 James L Walsh Powder-grain.
US2261630A (en) * 1938-12-07 1941-11-04 Du Pont Propellent powder

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1056365A (en) * 1912-04-11 1913-03-18 Fritz Raschig Explosive and process of producing same.
FR476154A (fr) * 1914-09-05 1915-07-15 Norsk Hydro Elektrisk Procédé pour empecher des sels de se grumeler et se prendre en masse
US1550064A (en) * 1925-05-05 1925-08-18 Verona Chemical Co Explosive
US1748787A (en) * 1928-01-17 1930-02-25 Delaware Lackawanna & Western Method of identifying fuel and product thereof
FR674217A (fr) * 1928-06-16 1930-01-24 Ig Farbenindustrie Ag Engrais chimique
US2015062A (en) * 1931-07-30 1935-09-24 Gen Chemical Corp Method for producing colored salts
GB389508A (en) * 1931-09-17 1933-03-17 Alfred John Prince Improvements in the production of fertilisers
US2383763A (en) * 1942-11-10 1945-08-28 Palestine Potash Ltd Crystallization of salts from aqueous solutions
US2377670A (en) * 1943-08-26 1945-06-05 Remington Arms Co Inc Ammunition priming mixtures
US2448605A (en) * 1944-11-13 1948-09-07 Johnson March Corp Composition for treating coal and the like

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US751385A (en) * 1904-02-02 Cleland davis
GB189417994A (en) * 1894-09-21 1895-07-27 Hiram Stevens Maxim Improvements relating to Smokeless Explosives.
US726901A (en) * 1899-05-27 1903-05-05 George Whitman Mcmullen Explosive charge.
US677527A (en) * 1899-08-24 1901-07-02 Hudson Maxim Cartridge.
US802347A (en) * 1903-07-17 1905-10-17 Henry C Aspinwall Perforated powder-grain.
US899577A (en) * 1907-08-09 1908-09-29 George Henry Wadsworth Art of producing gelatinized nitrocellulose explosives.
US1077320A (en) * 1913-02-20 1913-11-04 James L Walsh Powder-grain.
US2261630A (en) * 1938-12-07 1941-11-04 Du Pont Propellent powder

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099963A (en) * 1950-12-11 1963-08-06 Dobrin Saxe Outward burning neutral granulation for cast propellants
US2787533A (en) * 1952-12-17 1957-04-02 Olin Mathieson Propellent powder and method for producing same
US2933041A (en) * 1954-04-12 1960-04-19 Phillips Petroleum Co Rocket grain
US3706278A (en) * 1971-02-25 1972-12-19 Us Army Distributed propulsion for guns
US5726378A (en) * 1996-04-01 1998-03-10 Hodgdon Powder Company, Inc. Unitary propellant charge for muzzle loading firearms
USD500830S1 (en) 2001-12-18 2005-01-11 Legend Products Corporation Propellant charge with tapered sidewalls
USD505706S1 (en) 2001-12-18 2005-05-31 Legend Products Corporation Compressed premeasured charge for firearms
USD507323S1 (en) 2001-12-18 2005-07-12 Legend Products Corporation Compressed premeasured charge for firearms
US6688232B2 (en) 2001-12-31 2004-02-10 Legend Products Corporation Compressed powder charge for muzzleloader and black powder firearms
US7344610B2 (en) 2003-01-28 2008-03-18 Hodgdon Powder Company, Inc. Sulfur-free propellant compositions
US10767967B2 (en) 2018-08-07 2020-09-08 Thomas Faudree, IV Device for controlling a rate of gas pressure increase in a gun barrel
US11199383B2 (en) 2018-08-07 2021-12-14 Thomas Faudree, IV Device for controlling a rate of gas pressure increase in a gun barrel

Also Published As

Publication number Publication date
NL147702B (nl)
US2616787A (en) 1952-11-04
BE478739A (en))
NL73414C (en)) 1953-05-15
BE484744A (en))
CH276149A (de) 1951-06-30
DE938842C (de) 1956-02-09
NL138237B (en))
FR1004894A (fr) 1952-04-03
NL141539B (nl)
NL72253C (en)) 1951-01-15
GB627680A (en) 1949-08-12
CH312200A (de) 1955-12-31
GB625077A (en) 1949-06-21
CH308900A (de) 1955-08-15
DE838286C (de) 1952-05-08
US2616786A (en) 1952-11-04
FR58667E (fr) 1954-03-02
DE876838C (de) 1953-05-18
NL67217C (en)) 1950-08-15
ES180598A1 (es) 1947-12-16
FR59432E (fr) 1954-05-25

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