EP0377924A1 - Explosive Ladungen enthaltendes Magazin für ein Setzgerät mit Schubkolben - Google Patents

Explosive Ladungen enthaltendes Magazin für ein Setzgerät mit Schubkolben Download PDF

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Publication number
EP0377924A1
EP0377924A1 EP89300211A EP89300211A EP0377924A1 EP 0377924 A1 EP0377924 A1 EP 0377924A1 EP 89300211 A EP89300211 A EP 89300211A EP 89300211 A EP89300211 A EP 89300211A EP 0377924 A1 EP0377924 A1 EP 0377924A1
Authority
EP
European Patent Office
Prior art keywords
cartridge member
cap
recess
containing device
propellant
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.)
Withdrawn
Application number
EP89300211A
Other languages
English (en)
French (fr)
Inventor
Edward W. Bowman
Franciscus J.A. Storimans
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.)
Bowman E W Inc
Original Assignee
Bowman E W Inc
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 Bowman E W Inc filed Critical Bowman E W Inc
Publication of EP0377924A1 publication Critical patent/EP0377924A1/de
Withdrawn legal-status Critical Current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
    • F42B8/00—Practice or training ammunition
    • F42B8/02—Cartridges
    • F42B8/04—Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/16—Cartridges specially adapted for impact tools; Cartridge and bolts units
    • B25C1/163—Cartridges
    • 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
    • F42B5/26—Cartridge cases
    • F42B5/32—Cartridge cases for rim fire

Definitions

  • This invention relates to an explosive charge containing magazine and, more particularly, to an explosive charge containing magazine for ram setting gun used in a powder driven bolt setting gun.
  • the present invention relates to a plastic cased propellant magazine for use in a powder driven bolt setting gun and, in particular, to a magazine comprising a plurality of substantially equally spaced propellant containing or encasing cases, each case having a cartridge member operable to receive gunpowder and a cap formed so as to be mounted to the cartridge member, the cap and the cartridge member being formed from plastic material.
  • RAM SET Trademark
  • HILTI Trademark
  • the concept common to all these devices is the use of an explosive or propellant charge which is detonated inside a hand-held gun, the propellant charge being used to propel a metal object such as a threaded bolt into a hard surface such as a concrete wall.
  • These guns are extensively used in the construction of concrete buildings such that plumbing pipes and electrical cables may be hung on fastening devices fixed in concrete.
  • the propellants can also be used in cattle stun guns and starter pistols.
  • cartridges or containers for the explosive charges by deep-drawing brass into a shape resembling a small calibre bullet except that there is no slug at the top of the bullet.
  • At least one manufacturer inserts the cartridges into a plastic strip so that the gun can be used in a semi-automatic fashion rather than a single shot mode.
  • these devices include drive engaging means, such as notches, formed on the strip so that the strip can be advanced by the gun and properly aligned with the firing hammer or detonating pin in the gun to subsequently explode the respective charge.
  • the magazine component is a two component system comprising a plastic carrier having a series of holes and non-ferrous brass cartridges that fit the holes. Brass is expensive and the necessary deep-drawing and annealing of brass to form the required shape for the cartridge is also unduly complex.
  • Caseless charges have been designed to avoid the expense of deep drawing non-ferrous metals. Disadvantages have been experienced with such caseless charges, however, because of ignition difficulties. One such difficulty is that ignition of adjacent propellant charges has occurred due to a lack of a combustion sealing mechanism between the cartridges. This is, of course, dangerous and unsafe.
  • a caseless charge magazine which reduces or eliminates this danger is disclosed in U. S. Patent 4,406,079 which describes a strip of caseless charges wherein the propellant charge is displaced into the gun for ignition.
  • the system is incompatable with the more widely used types of guns and it is an inconvenient requirement to position each propellant in its own chamber prior to ignition.
  • a further problem with such caseless charges has been that methods to initiate detonation generally utilise centre fire initiation techniques which are more reliable in such caseless apparatuses. Rim fire techniques are preferable since they are in far wider use.
  • U.S. Patent No. 2,918,868, Ringdal discloses an invention relating to a cartridge comprising a base having a tubular extension and a case which consists of relatively elastic flexible synthetic resin material, such as polyethylene or polyvinylchloride.
  • the attachment of the case and cartridge base to each other is secured by means of a bead on the one member in engagement with a corresponding groove in the other member.
  • U.S. Patent No. 3,318,245, Ferri et al., issued 9 May, 1967 discloses strip ammunition for toy guns wherein a plurality of discrete explosive charges are contained in container means. Stalk means interconnects each container means. Stop means are formed on the stalk means for engagement by an advancing means of a toy gun. In this way the strip can be advanced by the space between each container means each time the gun is fired.
  • U.S. Patent No. 4,294,173, Ferri, issued 13 October, 1981, discloses ammunition for a toy-weapon comprising an injection molded support having seats for explosive charges. The charges are sealed within the seats by a separate cover for each seat. The covers are injection moulded simultaneously into the seats of the support.
  • U.S. Patent No. 3,349,710, Sposimo, issued 31 October, 1967 discloses a strip carrier for explosive socket caps for toy guns.
  • the explosive is encased in wells which are capped by a series of caps strung together in series.
  • U.S. Patent No. 3,611,870, Udert, issued October, 1971, discloses a cartridge magazine construction in which the cartridge is placed in a narrow band having a plurality of tubular projections formed therein. Each projection holds a single cartridge.
  • Cartridge holding collars are formed at each of the holes by bulging or plastically deforming the strip in the region of these holes so as to form a clamping seal spaced from the plane of the strip for clampingly engaging cartridges held at the strip.
  • Various preferred embodiments include various cross-sectional configurations of the holding collars.
  • the method of making the magazine apparatus includes forming the collars by a multiple-step bulging process wherein the last bulging step is formed by the cartridges as they are inserted into position on the strip.
  • U.S. Patent No. 4,098,169, Gawlick et al., issued 4 July, 1978 discloses an ammunition belt apparatus for accommodating propellant cartridges including a flexible, coilable belt strip, a plurality of holes extending transversely through the strip and spaced from one another in the longitudinal direction of the strip.
  • Clamping means are associated with each of the holes for clamping a cartridge to the strip with portions of the cartridge extending through one of the holes. Parts of the clamping means are formed separately from the strip and the cartridge.
  • the clamping means includes a tubular casing formed separately from the strip for each of the holes. The tubular casing press-fittingly engages a respective cartridge for holding the cartridge in position on the strip with the casing. A cartridge rim clamps the strip therebetween.
  • a cartridge holding space for a caseless charge is formed by the combination of a cartridge recess in a band-shaped magazine body and a torus-­shaped body superimposed on the magazine body to form an extension of the recess.
  • Various configurations of the cartridge holding space and the exterior of the torus-shaped body can be used.
  • a variety of openings can be provided through the cartridge holding space to prevent destruction of the magazine parts when the caseless charge is ignited.
  • U.S. Patent No. 4,406,079, Buechel, issued 27 September, 1983 discloses a magazine for caseless propellant charges, such as those used in a fastening element setting device.
  • the magazine consists of an elongated strip-like member. Cut-outs are provided in the strip-like member and a caseless charge holder is secured in each cut-out by webs. A caseless charge and the holder are displaced out of a cut-out when a sufficient force is directed against the holder to separate the webs from the strip-like member.
  • the magazine comprises an elongated flat flexible strip or band preferably made of an inexpensive material such as plastic.
  • the strip includes a plurality of stepped projections defining cartridge holding recesses arranged at equally spaced locations along the strip and lateral recesses for advancement.
  • Each cartridge holding recess is defined by a stepped projection extending upwardly from the strip which on its exterior is stepped inwardly in a direction toward the tip of the cartridge.
  • each of the outside walls of this portion on the cartridge magazine is slightly less than one cone angle of the cartridge chamber of a gun barrel with which it is to be employed. In this way there is more than one sealing point between the projections and the inner wall of the cartridge chamber.
  • the present invention provides an explosive or propellant containing device which is used in association with a gun to drive an attachment member into a structure, particularly a concrete structure.
  • the device is intended to minimize or eliminate the use of drawn non-ferrous metal such as brass and is less expensive to manufacture than prior art devices.
  • a propellant containing device for a power actuated tool comprising cartridge member means having an inner substantially cylindrical recess, said recess having an outer area and an inner open area, cap means operable to close said inner open area of said cartridge member means, annular retaining arm means on the periphery of one of said cap or cartridge member means, annular arm recess means complementary to said annular retaining arm means in the other of said cap or cartridge member means for allowing entry into and holding said retaining arm means, annular skirt means inside the diameter of said annular retaining arm means, said annular skirt means being adjacent to and in operable contact with a detonating charge means, said detonating charge means being located between said annular skirt means and said cap means.
  • a method of manufacturing a propellant containing device for a power actuated tool comprising inserting propellant in a substantially cylindrical recess of a plastic cartridge member, inserting detonating charge means in one of said cartridge member on a plastic cap means while allowing access of said detonating charge means to said propellant and assembling said base means to said cartridge member such that said detonating charge means is located between and in operative contact with said cartridge member and cap means.
  • Figures 1 and 2 illustrate front and rear isometric views of the propellant containing device generally illustrated at 10.
  • An elongate base or magazine 11 which is commonly used in powder actuated tools or power hammers to drive an attachment member into a structure contains a plurality of propellant containing devices 11.
  • a circular magazine 63 might also be used as seen in Figure 10.
  • the magazine 11 has a series of drive notches or slots 12 which allow the magazine 11 to be driven by the drive of a powder actuated tool or power hammer and indexed with relation to the detonation pin of the gun or power hammer.
  • the propellant containing devices 10 are integral with the magazine 11 and are formed from a suitable plastic material such as a heat extrudable polymer selected from polyethylene or polyvinylchloride which is moisture impervious.
  • FIG. 2 is a rearward view of the magazine 11 with the plurality of propellant containing devices 10 integrally formed therewith.
  • a plurality of cap members 13 are inserted in the open ends of each propellant containing device 10 as will be described in greater detail hereafter.
  • the propellant containing device 10 is best illustrated in Figure 3. It comprises a cartridge member 14 and a cap member 13.
  • the cartridge member 14 has an inner substantially cylindrical recess 20.
  • the recess 20 has an outer area 21 which is closed and an inner area 22 which is open and adjacent the base 23 of the cartridge member 14.
  • Cartridge member 14 further includes an annular skirt 24 which runs about the periphery of the cartridge member 14 and is defined on the inside by the cylindrical recess 20 and on the outside by an annular arm recess 30 which likewise runs around the periphery of the cartridge member 14 and which will be further described hereafter.
  • a crease 31 is formed on the inside of the outer area 21.
  • the crease 31 is formed in the shape of an "x" and assists the detonated charge controlled in the cylindrical recess 20 to burst through the top of the cartridge member 14 and into the barrel of the powder actuated tool or power hammer.
  • the cartridge member 14 has a conical shape and the wall 32 between the exterior of the cartridge member 14 and the cylindrical recess 20 has a tapered thickness whit the thicker end adjacent the inner area 22 and the thinner area being located adjacent the outer area 21 of the cartridge member 14.
  • the wall 32 may be increased of decreased in thickness so that the interior cylinder recess 20 can be increased or decreased in volume to hold various volumes of gunpowder depending on the power required in the particular operation.
  • the propellant namely gunpowder 33, either in the form of powder or solid pellet is inserted into and contained within cylindrical recess 20. It acts to provide the force of the fastener in the powder actuated tool or power hammer as will be described hereafter.
  • the interior wall of the cylindrical recess 20 may have one or more grooves if faster burning of the propellant 33 is desired.
  • the cap closure member 13 is likewise made from the same plastic material as is the cartridge member 14 although, of course, a different plastic material may also be used.
  • the cap closure member 13 has an annular arm 34 extending outwardly from the closure member 13 and about its periphery.
  • the annular arm 34 is adapted to fit within and be held by the annular arm recess 30 in the cartridge member 14.
  • a projection 40 is formed on the inner side of the annular arm 34 and is adapted to be held by a similar female receptacle 41 in the cartridge member 14.
  • a detonating charge recess 42 is provided in the cap closure member 13 opposite from the annular skirt 24 and a detonating charge 43 is placed in the recess 42.
  • the charge recess 42 together with the detonating charge 43 has access to the propellant 33 in the cylindrical recess 20 of the cartridge member 14 so that ignition of the propellant 33 is possible following detonation of the primer or detonating charge 43.
  • a lip 44 is formed on the bottom circumference of the cartridge member 14 and a complementary rounded circumference 50 is formed on the bottom of the cap closure member 13.
  • the cap closure member 13 When the cap closure member 13 is inserted into the cartridge member 14, it is adapted to be tightly held both by the annular arm 34 and the annular arm recess 30 and by the rounded circumference 50 which is held solidly by the lip 44 on the cartridge member 14.
  • the magazine 11 is molded together with the cartridge members 14 using techniques as are known in the injection molding art.
  • a propellant in the form of a powder or a pre-formed pellet of gunpowder 33 is inserted into the inner cylindrical recess 20 of the cartridge member 14.
  • the cap closure member 13 with its detonating charge recess 42 is likewise molded from suitable plastic material using techniques as are known in the art and the primer or detonating charge 43 is placed in the detonating charge recess 42 in a position where the firing pin of the gun impacts upon the cap closure member 13.
  • the annular arm 31 of the cap closure member 13 is then inserted into the annular arm recess 30 of the cartridge member 14 until the projection 40 on the annular arm 34 is received and firmly held by the female receptacle 41 and the rounded circumference 50 of the closure member 13 is formly held by the lip 44 of the cartridge member 14.
  • the propellant containing device 10 may, as viewed in Figure 4, be used independently as is a single shell in a standard bullet or, preferably, it is used with a linear magazine 11 as illustrated in Figures 1, 2 and a round magazine as seen in Figure 10. If it is used with the magazine 11, the magazine 11 will be inserted in the particular powder actuated tool or power hammer to be used and the indexing of the magazine 11 by use of the drive notches 12 will bring, in sequence, each of the propellant containing devices 10 to its indexed position adjacent the firing pin 51 such that the firing pin 41 will compress the detonating charge or primer 42 between the cap closure member 13 and the annular skirt 24 of the cartridge member 14.
  • the compression will be such that the required anvil effect is obtained and the detonating charge 42 will be detonated. This detonation will cause ignition of the propellant 33 which will then burst through the crease 31, the crease 31 being the weakest point of the cartridge member 14.
  • the pressure can be used to drive either a high velocity or low velocity (piston-actuated) tool.
  • the pressure will propel the piston member into the attachment member (not shown) outwardly and into the concrete wall intended to be pierced by the attachment member.
  • the assembly of the propellant containing device 10 may be enhanced by attaching a plurality of cap closure members 13 together using tabs or runners 62 in the form illustrated in Figure 9.
  • the position of each cap closure member 13 is designed to be such that a series of members 13 may simultaneously be inserted into respective cartridge members 14 on a magazine 11 after insertion of the propellant or gunpowder 33 and, thus, a completed assembly can be obtained more expediently than individually assembling each propellant containing device 10.
  • FIGS 5 and 6 Variations of the propellant containing device 10 are further illustrated in Figures 5 and 6.
  • the exterior surface of the cartridge member 14 has at least one raised portion around the circumference of the exterior surface and a peripheral channel likewise extending around the exterior surface.
  • the embodiment illustrated in Figure 5, for example, has two arcuate sealing shoulders 51, 52.
  • the first shoulder 51 and the second shoulder 52 define between them a shock absorption cavity 53 which serves as a high pressure gas pressure absorption space. Cavity 53 assists the sealing action both before and during firing and assists in ejection of the cartridge member 14 from the cartridge chamber of the gun after detonation.
  • the embodiment illustrated in Figure 6 has a first arcuate shoulder 54 and a second arcuate shoulder 60, which are separated by a right angle shoulder 60, to define two gas pressure absorption cavities. This is in contrast to the single cavity 53 illustrated in the exterior surface of the cartridge member 14 of Figure 5. In certain instances, it may be found by experimentation that is is preferable to have two or more gas pressure cavities to assist in sealing action with a shock absorption cavity between the sealing points.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
EP89300211A 1988-12-09 1989-01-11 Explosive Ladungen enthaltendes Magazin für ein Setzgerät mit Schubkolben Withdrawn EP0377924A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA585516 1988-12-09
CA585516 1988-12-09

Publications (1)

Publication Number Publication Date
EP0377924A1 true EP0377924A1 (de) 1990-07-18

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525613A1 (de) * 1991-07-24 1993-02-03 Dynamit Nobel Aktiengesellschaft Kartusche aus Kunststoff und Kartuschen-Bandmagazin aus Kunststoff
EP0560584A1 (de) * 1992-03-13 1993-09-15 Sencorp Treibladungsband
EP0560583A1 (de) * 1992-03-13 1993-09-15 Sencorp Vorrichtung und Materialzusammensetzung zum Antreiben eines Objektes
EP0608776A1 (de) * 1993-01-26 1994-08-03 Dynamit Nobel Aktiengesellschaft Kartusche aus Kunststoff für ein Schussgerät, insbesondere ein Bolzensetzgerät
DE4444095A1 (de) * 1994-12-10 1996-06-13 Rheinmetall Ind Gmbh Bandförmiger Ladestreifen für Bolzensetzgerät
US5684266A (en) * 1995-06-05 1997-11-04 Sencorp Propellant charge structure for generating gases to propel an object from a tool
WO1999036745A1 (en) * 1998-01-13 1999-07-22 Senco Products. Inc. Propellant strip assembly and propellant charge structure
WO2001059398A1 (en) * 2000-02-08 2001-08-16 Lambeth Properties Limited Improvements in and relating to training ammunition
FR2835462A1 (fr) * 2001-12-17 2003-08-08 Hilti Ag Cartouche, en particulier pour outils de scellement, et dispositif pour l'amorcage d'une charge propulsive, en particulier pour outils de scellement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918868A (en) * 1955-04-30 1959-12-29 Ringdal Lars Cartridge
US3144827A (en) * 1962-11-19 1964-08-18 John T Boutwell Blank cartridge
EP0273777A1 (de) * 1987-01-02 1988-07-06 Edward W. Bowman Explosive Ladungen enthaltendes Magazin für ein Setzgerät mit Schubkolben

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918868A (en) * 1955-04-30 1959-12-29 Ringdal Lars Cartridge
US3144827A (en) * 1962-11-19 1964-08-18 John T Boutwell Blank cartridge
EP0273777A1 (de) * 1987-01-02 1988-07-06 Edward W. Bowman Explosive Ladungen enthaltendes Magazin für ein Setzgerät mit Schubkolben

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279201A (en) * 1991-07-24 1994-01-18 Dynamit Nobel Aktiengesellschaft Plastic cartridge and plastic cartridge-belt magazine
EP0525613A1 (de) * 1991-07-24 1993-02-03 Dynamit Nobel Aktiengesellschaft Kartusche aus Kunststoff und Kartuschen-Bandmagazin aus Kunststoff
AU662390B2 (en) * 1992-03-13 1995-08-31 Sencorp Apparatus and composition for propelling an object
EP0560584A1 (de) * 1992-03-13 1993-09-15 Sencorp Treibladungsband
EP0560583A1 (de) * 1992-03-13 1993-09-15 Sencorp Vorrichtung und Materialzusammensetzung zum Antreiben eines Objektes
CN1044878C (zh) * 1993-01-26 1999-09-01 诺贝尔炸药公司 用于发射装置,尤其是用于打螺栓机的塑料药筒
EP0608776A1 (de) * 1993-01-26 1994-08-03 Dynamit Nobel Aktiengesellschaft Kartusche aus Kunststoff für ein Schussgerät, insbesondere ein Bolzensetzgerät
DE4444095A1 (de) * 1994-12-10 1996-06-13 Rheinmetall Ind Gmbh Bandförmiger Ladestreifen für Bolzensetzgerät
US5684266A (en) * 1995-06-05 1997-11-04 Sencorp Propellant charge structure for generating gases to propel an object from a tool
WO1999036745A1 (en) * 1998-01-13 1999-07-22 Senco Products. Inc. Propellant strip assembly and propellant charge structure
US6053108A (en) * 1998-01-13 2000-04-25 Senco Products, Inc. Propellant strip assembly and propellant charge structure
WO2001059398A1 (en) * 2000-02-08 2001-08-16 Lambeth Properties Limited Improvements in and relating to training ammunition
US7302890B2 (en) 2000-02-08 2007-12-04 Utm Ip Limited Training ammunition
FR2835462A1 (fr) * 2001-12-17 2003-08-08 Hilti Ag Cartouche, en particulier pour outils de scellement, et dispositif pour l'amorcage d'une charge propulsive, en particulier pour outils de scellement

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