US3756118A - Propellant charge for the firing of projectiles, bolts, and the like, from a firing device, and apparatus for the introduction of this propellant charge - Google Patents

Propellant charge for the firing of projectiles, bolts, and the like, from a firing device, and apparatus for the introduction of this propellant charge Download PDF

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Publication number
US3756118A
US3756118A US00031498A US3149870A US3756118A US 3756118 A US3756118 A US 3756118A US 00031498 A US00031498 A US 00031498A US 3149870 A US3149870 A US 3149870A US 3756118 A US3756118 A US 3756118A
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US
United States
Prior art keywords
firing device
combustion chamber
barrel
strip
aperture
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
US00031498A
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English (en)
Inventor
H Ratz
H Gawlick
H Bendler
G Marondel
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.)
Dynamit Nobel AG
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Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of US3756118A publication Critical patent/US3756118A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases

Definitions

  • This invention relates to a propellant charge for the firing of projectiles, bolts, nails, and the like, from the barrel of a firearm or a firing device, which charge can be fed to the object to be fired in the firearm or the like and is combustible without leaving any residue.
  • Propellant which can be fired without a casing has been known in a variety of shapes.
  • consumable propellants provided as individual pieces of various shape are known, especially those in pellet form.
  • cases similar in configuration to a metal case have been manufactured directly from the propellant of the above-mentioned type.
  • the propellant pieces are individually introduced from a storage container into the combustion chamber of the firing device or the like, it being necessary to arrange the individual propellant pieces in series, at least shortly prior to being fed into the firing device.
  • the invention is distinguished in that the propellant charge is shaped, as a propellant powder, in the form of a web or band, for example a strip or foil with a cross section which remains uniform over its length.
  • a propellant strip or foil can be readily handled and accommodated in a narrow space for storage and magazining. The manufacture is also thereby facilitated.
  • the strip or foil provides an increased weight of material uniformly with its length, an accurate metering of the charge is possible by measuring the length. This fact, on the one hand, makes it possible to employ a simple feeding device and, on the other hand, merely differing lengths of the strip or foil need be supplied for charges of different strength.
  • the propellant strip or foil can exhibit, with equal thickness, varying widths, depending on the desired amount of charge. For smaller charges, for example for bolt driving tools, a foil width of about 8 10 mm. should be sufficient. For rifle ammunition or the like, a foil having a width of about 30 mm. will be suitable.
  • the strip or foil of the consumable propellant is to exhibit a rigidity sufficient for feeding this strip into the firearm and the like, and a winding ability, so that the feeding to the combustion chamber of the firing device or the like can be effected without a complicated mechanism.
  • Preferred types of propellant are those consisting of 5 50 percent nitroglycerin, up to about 5 percent customary and conventional stabilizers, as well as nitrocellulose as the remainder; for example, 40 percent nitroglycerin, 2 percent stabilizers, and 58 percent nitrocellulose is typical.
  • the invention furthermore relates to a device, adapted to the strip-shaped, particularly foil-shaped propellant powder, for feeding this propellant charge into the cartridge chamber of the barrel of the firearm or of the firing device; in this connection, the magazine can be attached to the firearm or the like.
  • the device according to the invention is distinguished in that the cartridge chamber exhibits an insert or feed slot adapted to the cross section of the powder strip or foil, through which slot the powder strip or foil can be inserted, by means of a feeding device, into the cartridge chamber, which latter is fashioned as the combustion chamber.
  • Such an insert slot can be made adjustable with respect to its height and width, so that, in one and the same firearm, varying charges in the form of the powder strip or the like can be employed.
  • the powder strip or foil is provided with a perforation extending over the length thereof and repeating itself regularly, which perforation can consist, for example, of holes or the like in one row or in several rows.
  • perforation can consist, for example, of holes or the like in one row or in several rows.
  • a longitudinal measuring device for the strip or foil can be attached in front of the insert slot present at the firearm; a predetermined number of holes or the like in the strip or foil can constitute the measure for the amount of powder to be employed.
  • a severing device for the strip or foil is suitably provided in the form of a cutting blade, for example.
  • the insert slot can be simultaneously closed off on the outside, which can also be effected by the arrangement of jaws or the like.
  • the powder strip or foil is advantageously coiled up within the magazine and stored therein.
  • the combustion chamber is advantageously provided with guides making it possible to wind the strip into a spiral or the like during the feeding process.
  • a guide can be, for example, a central axle or shaft about which the foil is guided.
  • the ignition is suitably effected by a flame which can stem from a burning gas, which latter is produced, for example, by the igniting of a readily flammable fluid or a vapor, for instance benzine or gasoline, alcohol, or the like.
  • a burning gas which latter is produced, for example, by the igniting of a readily flammable fluid or a vapor, for instance benzine or gasoline, alcohol, or the like.
  • the axle or the bolts in the combustion chamber can be utilized as means for supplying the ignition flame, whereby an ignition of the powder strip or foil over the entire length of the combustion chamber is ensured.
  • FIGS. 1 and 2 show an embodiment of the propellant charge in the form of a foil according to the invention, in top view and in cross section, a predetermined perforation being provided;
  • FIGS. 3 and 4 illustrate further embodiments for a different type of perforation in the powder foil according to the invention
  • FIG. 5 is a perspective view, partially cut away, of a magazine carrying the powder foil according to the invention.
  • FIGS. 6 and 7 illustrate in a plan view and in a top view, and partially in section, a device for feeding the powder foil of this invention to a firing device, and for loading the foil in the combustion chamber of the firing device;
  • FIG. 8 shows schematically an additional embodiment for placing the foil in spiral shape within the combustion chamber.
  • the propellant charge 1 of a propellant which burns without leaving any residue exhibits preferably the shape of a band or foil having a uniform cross section over its length, so that an accurate metering of the charge is possible by measuring its length.
  • a longitudinal measuring is suitably effected by means of indicia, such as perforations.
  • a series of perforations 2 are provided on one side.
  • the longitudinal measurement can be carried out advantageously by counting the perforations, i.e., the holes 2.
  • the perforation provided in the band 1 is different in each instance.
  • FIG. 3 shows a band with the rows of holes 3 and 4 close to the respective longitudinal edges of the band, whereas in the band of FIG. 4, a row of perforations 5 is provided which is disposed in the center of the band, the holes constituting slots extending in the transverse direction.
  • a simple cartridge or cassette 6, as seen in FIG. 5, is sufficient, wherein the band 1 is extended through a slot 7 to the outside; this slot 7 corresponds to the cross section of the strip or band.
  • the feed to the firing device can be effected by rotating the central axle of the eassette, a corresponding advancement of the band being made possible by the rigidity of this band.
  • the firing device 8 has a barrel 9, to which are fed separately projectiles 10 of the conventional type, or bolts to be fired, or the like.
  • a combustion chamber 11 is arranged, into which the strip 1 is to be fed.
  • the strip is introduced into the combustion chamber 11 through a slot 12; in this connection, the cross section of this slot is to be adapted to the cross section of the strip 1 as accurately as possible.
  • the cross section of the slot can be made adjustable.
  • a counter 13 can be provided which is associated with the holes of the perforation.
  • the strip 1 slides through this counting device, which may be any conventional counter arrangement, such as an optical counter or the like, so that it can be seen from the latter what amount, in weight, or what length of foil, has been fed into the combustion chamber Ill.
  • the length can be derived from counting the perforation holes or the like, such as by means of a mechanical counter or the like.
  • mount a locking or stop latch at the firearm which permits the feeding of only a respectively preselected, but then fixedly determined, amount.
  • the advancement of the selectively rigid powder strip 1 can be carried out by means of the rotatably mounted axle 14; the rotation can be conducted manually by means of a button 15 or the like disposed on the outside.
  • the strip 1 can again assume a spiral shape in the combustion chamber 11.
  • the strip 1 can be wound up on an axle 16 in the combustion chamber 11.
  • Such a reeling-up procedure can advantageously be conducted by providing grooves 17 on the rear end wall of the combustion chamber 11, which grooves extend spirally and keep the individual laps of the wound-up strip at a spacing from each other.
  • the strip 1 can simultaneously serve as a cover for the feed slot 12 in the firing device 9; in this connection, the strip is retained or clamped in the slot at the beginning of the firing, so that it cannot be flung out by the gas pressure produced in the combustion chamber.
  • the slot 12 is so narrow, with respect to the cross section of the strip, that the combustion cannot be propagated from the combustion chamber to the outside, due to a large dissipation of heat in the chamber. It is also possible to cut the strip, after introduction into the combustion chamber, and prior to the initiation of the ignition process, by means of a movable blade 19. Thereby, the strip is severed at this point, and the advanced blade simultaneously closes off the combustion chamber.
  • the ignition of the strip in the combustion chamber can be effected in various ways, for example by electrical sparks, or by burning solvent vapors which are ignited either according to the diesel principle or by a spark. It is also possible to employ a conventional igniting means, for example a primer cap, which is introduced separately into the firearm.
  • a conventional igniting means for example a primer cap, which is introduced separately into the firearm.
  • the fixed axle 16 is advantageously employed for feeding the primer.
  • the axle 16 can exhibit flash vents (not shown) at its periphery, from which the ignition jet of a priming substance can emanate in order to ignite the strip.
  • the spacer bolts 18 can also be fashioned as hollow tubes with flash vents for supplying the priming substance.
  • An explosive firing device comprising an elongated barrel, a combustion chamber within said barrel proximate to an end thereof, said barrel having a single aperture providing a path of communication between the barrel exterior and said combustion chamber for accepting a completely combustible powder strip, said barrel aperture having a configuration and size corresponding to the completely combustible powder strip so that the strip may be inserted into said combustion chamber through said barrel aperture and be burned within the combustion chamber without leaving any residue therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Medicinal Preparation (AREA)
  • Air Bags (AREA)
  • Advancing Webs (AREA)
  • Toys (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Automotive Seat Belt Assembly (AREA)
US00031498A 1969-04-24 1970-04-24 Propellant charge for the firing of projectiles, bolts, and the like, from a firing device, and apparatus for the introduction of this propellant charge Expired - Lifetime US3756118A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691920816 DE1920816A1 (de) 1969-04-24 1969-04-24 Treibladung zum Abschiessen von Geschossen,Bolzen u.dgl. aus einer Schusswaffe und Vorrichtung zum Einfuehren dieser Treibladung

Publications (1)

Publication Number Publication Date
US3756118A true US3756118A (en) 1973-09-04

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US00031498A Expired - Lifetime US3756118A (en) 1969-04-24 1970-04-24 Propellant charge for the firing of projectiles, bolts, and the like, from a firing device, and apparatus for the introduction of this propellant charge

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Country Link
US (1) US3756118A (en))
JP (1) JPS5014838B1 (en))
AT (1) AT316354B (en))
AU (1) AU1430870A (en))
BE (1) BE749405A (en))
CH (2) CH551607A (en))
DE (1) DE1920816A1 (en))
DK (1) DK128584B (en))
ES (1) ES378474A1 (en))
FR (1) FR2039441B1 (en))
GB (1) GB1292362A (en))
HU (1) HU163245B (en))
IL (1) IL34212A (en))
NL (1) NL7005119A (en))
NO (1) NO129648B (en))
PL (2) PL72793B1 (en))
SE (1) SE7310049L (en))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030155397A1 (en) * 2002-02-15 2003-08-21 Jens Neumann Setting tool and propellant charge magazine for a setting tool
US20040231503A1 (en) * 2003-05-02 2004-11-25 Gerhard Ehmig Propellant holder for an explosion-driven setting tool and an explosion-driven setting tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10112253C1 (de) * 2001-03-14 2002-11-28 Josef Schmeiler Patrone mit einer 1 bis n Teilladungen enthaltenen Ladung insbesondere für herkömmliche Hülsen, verbrennbare Treibladungshülsen, hülsenlose Munition und das dazu notwendige Ladeverfahren

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2043256A (en) * 1935-10-25 1936-06-09 Jr Robert D Mcleod Cartridge for projectiles
US3210930A (en) * 1962-02-01 1965-10-12 Atlantic Res Corp Gas generator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2043256A (en) * 1935-10-25 1936-06-09 Jr Robert D Mcleod Cartridge for projectiles
US3210930A (en) * 1962-02-01 1965-10-12 Atlantic Res Corp Gas generator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030155397A1 (en) * 2002-02-15 2003-08-21 Jens Neumann Setting tool and propellant charge magazine for a setting tool
US6880738B2 (en) * 2002-02-15 2005-04-19 Hilti Aktiengesellschaft Propellant charge magazine for a setting tool
US20040231503A1 (en) * 2003-05-02 2004-11-25 Gerhard Ehmig Propellant holder for an explosion-driven setting tool and an explosion-driven setting tool
US20080156843A1 (en) * 2003-05-02 2008-07-03 Hilti Aktiengesellschaft Propellant holder for an explosion-driven setting tool and an explosion-driven setting tool
US8479631B2 (en) 2003-05-02 2013-07-09 Hilti Aktiengesellschaft Propellant holder for an explosion-driven setting tool and an explosion-driven setting tool

Also Published As

Publication number Publication date
PL78641B1 (en)) 1975-06-30
GB1292362A (en) 1972-10-11
AU1430870A (en) 1971-10-28
IL34212A0 (en) 1970-11-30
IL34212A (en) 1975-03-13
FR2039441B1 (en)) 1973-05-25
PL72793B1 (en)) 1974-08-30
BE749405A (fr) 1970-10-01
AT316354B (de) 1974-07-10
CH524129A (de) 1972-06-15
FR2039441A1 (en)) 1971-01-15
DE1920816A1 (de) 1970-11-05
SE7310049L (en)) 1973-07-18
NO129648B (en)) 1974-05-06
JPS5014838B1 (en)) 1975-05-30
NL7005119A (en)) 1970-10-27
DK128584B (da) 1974-05-27
ES378474A1 (es) 1973-04-16
HU163245B (en)) 1973-07-28
CH551607A (de) 1974-07-15

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