US3120808A - Stud cartridge shell - Google Patents

Stud cartridge shell Download PDF

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Publication number
US3120808A
US3120808A US104081A US10408161A US3120808A US 3120808 A US3120808 A US 3120808A US 104081 A US104081 A US 104081A US 10408161 A US10408161 A US 10408161A US 3120808 A US3120808 A US 3120808A
Authority
US
United States
Prior art keywords
cartridge
casing
base
firing
stud
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
US104081A
Other languages
English (en)
Inventor
Gawlick Heinz
Hans K L Stadler
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
Original Assignee
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 US3120808A publication Critical patent/US3120808A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B25C1/12—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting directly on the bolt
    • B25C1/126—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting directly on the bolt operated by a hammer blow
    • 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
    • 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
    • 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

  • the present invention relates to a stud cartridge shell usable for rim firing in a stud gun having a firing chamber which opens relatively slowly in response to the firing, and more particularly to such a shell having a bottom wall of greater thickness than the remainder of the shell.
  • the breech block which covers the rear end of the firing chamber as a displaceable member rather than as a rigidly closed member.
  • the breech block is arranged for movement into and out of closing contact with the rear end of the firing chamber.
  • the breech block may be of the blow-back variety which is impelled rearwardly by the force of firing, immediately upon firing or the same may be of the recoil type wherein the breech block is moved rearwardly after a certain degree of recoil has been achieved which may overcome a spring force normally urging the breech block into closed position against the rear end of the firing chamber.
  • Industrial stud guns find wide application in forcing nails and the like into objects against which the gun is placed for firing. In the usual commercial stud gun, the powder charge is provided in metal cartridges equipped for central firing or rim firing.
  • rim firing cartridges are preferred.
  • the powder gases which form as a result of the cartridge firing are contained in a firing chamber or cartridge chamber having a volume which practically equals the volume of the cartridge itself, the pressures generated within the interior of the firing chamber or combustion chamber are considerable and even exceed by far the pressure values generated by the usual rifle cartridges.
  • the powder gases generated upon firing the cartridge in a stud gun must work against the difiiculty opening breech block which acts as a piston in some respects. Because of the considerable pressures generated upon firing cartridges in stud guns, the cartridge shell can only poorly stand up under the stresses and strains. This is particularly true if the cartridge is provided with rim ignition means.
  • a stud gun device comprising a stand frame which may be set against the surface into which the nail is to be driven, such stand frame containing an upper piston of heavy mass analogous to the closed or muzzle end of a gun as well as a lower piston of lighter mass arranged for movement within the stand frame from a position in abutment with the bottom end of the upper piston to a position out of abutment therewith and axially displaced with respect thereto.
  • a cartridge chamber or firing chamber is defined in the lower surface of the upper piston such that the cartridge is inserted therewithin with the cartridge bottom wall facing the upper surface of the lower piston.
  • the lower piston is suitably provided with a rim firing pin, such that when the upper piston is caused to move downwardly against the lower piston, the impact will cause the firing pin to detonate the cartridge.
  • the gases generated upon firing will work against the upper surface of the lower piston causing the downward displacement thereof.
  • a nail at the underside of the lower piston such nail may be effectively driven into the surface against which the stand frame is placed, in the desired manner.
  • the upper piston may be considered a member closing ofi the muzzle end of the device while the lower piston may be considered the breech block of the device which simultaneously serves as the impelling member for eiiectuating the driving pin of a nail, bolt, etc. into the adjacent surface in the desired manner.
  • FIGURE 1 is a schematic partial sectional view of the lower end of a stud cartridge shell in accordance with one embodiment of the invention
  • FIGURE 2 is a schematic partial sectional view of a stud cartridge shell in accordance with another embodiment of the invention.
  • FIGURE 3 is a schematic partial sectional view of a stud cartridge shell in accordance with a further embodiment of the invention.
  • FIGURE 4 is a schematic sectional view of a stud gun device positioned in relation to the surface into which the stud or nail is to be driven, illustrating the manner in which the cartridge shell of the invention is used.
  • a stud cartridge shell of improved construction usable for rim firing in a stud gun having a firing chamber which opens relatively slowly in response to firing may be provided, the cartridge shell comprising a cylindrical casing having a bottom wall connected thereon, the bottom wall for said casing having a pronouncedly greater thickness than the casing.
  • a clear delineation is defined between the respective thickness of the casing and the bottom wall of the cartridge shell at the connection therebetween.
  • the ratio of the thicknesses of the bottom wall and the casing is within the range of from about 2:1 to 10:1.
  • the casing is provided with a bottom end portion which frusto-conically outwardly extends to the bottom wall, such bottom end portion being optionally integrally connected with the bottom wall.
  • the bottom end portion may have the same thickness as the casing and thus be connected with the bottom wall at the outermost portion of the bottom end portion.
  • the bottom end portion may have the same thickness as the bottom wall, whereby the same defines an inwardly directed shoulder adjacent the innermost portion thereof, at the connection between the thicker bottom wall and. the thinner casing thereat.
  • the casing may be provided with the bottom end portion which annularly extends outwardly and then inward-1y from the casing to the bottom Wall.
  • the bottom wall is provided with a reinforcement cap extending thereover.
  • the reinforcement cap has an annular flange inwardly directed over and clampingly engaging the outer surface of the bottom end portion.
  • the bottom end portion defines an outwardly directed lip arcuate in cross section and the annular flange defines a correspondingly shaped outwardly enclosed groove for securingly receiving the lip therewithin.
  • the bottom wall has the same thickness as the casing and the bottom end portion, while the reinforcement cap is at least as thick as the bottom wall or preferably thicker than the bottom wall.
  • the stud cartridge shell With a casing and a bottom wall of markedly different wall thicknesses a well-defined, rapid separation of the thick bottom wall from the remaining thin casing will take place upon firing in the cartridge chamber of the stud gun. Accordingly, no further fragmentation of the cartridge shell will occur, permitting easy removal of the two large fragments for quick reloading and reuse of the stud gun.
  • a welldefined delineation is present between the ditferent thickness wall portions, so that upon firing, the bottom wall will be cleanly separated from the casing poistioned within the firing chamber.
  • the thicker bottom wall as opposed to the thinner casing may be produced by special stamping tools or cutting tools. However, it is also possible to provide a thicker bottom wall by reinforcing a bottom wall having approximately the same thickness as the casing by means of an overlying cap.
  • a blank separating stud firing cartridge shell having a generally tubular or cylindrical casing shank 1 and a base or bottom wall 2 which is about 3 times as thick as the casing shank 1.
  • a frusto-conical bottom annular end extension 1 is provided of the same thickness as the casing shank 1 for interconnecting the casing shank 1 with the radially outward edge of the thicker bottom wall 2.
  • a conventional primer composition 5 is provided so as to form a rim firing primer with the adjacent base structure while a propellant 6 is -located in the usual way in casing shank 1 for generating high pressures upon rim firing of the cartridge.
  • the casing shank 1 is connected with the bottom wall 2, which is about 3 times as thick as the casing shank 1, by means of the frusto-conical bottom annular end extension 2' having the same thickness as the bottom wall 2.
  • the radially inner edge of extension 2' forms the shoulder or separation groove 3, the outer portion of extension 2' being connected with the casing shank 1.
  • the casing shank 1 is connected to the bottom wall 2a, having the same thickness thereas, by means of the arcuate bottom annular end extension 2a'. While extension 2a has the same thickness as bottom wall 2a and casing shank 1, the reinforcement cap 4 is disposed over the bottom wall 2a. The arcuate iriwardly directed flange 4' of reinforcement cap 4 clampingly secures arcuate extension 2a. Since reinforcement cap is about 2 to 3 times as thick as the remaining por tions of the cartridge shell, 21 well-defined difference in wall thickness is provided. Similarly to the embodiments of FIGURES l and 2, a primer composition and propelilant (not shown) are provided for effecting the desired result upon firing.
  • a well defined separation groove is present so that upon firing, the bottom wall of the cartridge shell will cleanly separate from the remaining casing shank, so that only two shell fragments will occur. Since the bottom wal'l is of thicker dimensions with respect to the easing shank, the bottom wall will stand up under the heavy pressures generated upon firing the cartridge and will be cleanly severed before the pressures of the gases will attack the casing shank 1 to rupture or tear apart the same.
  • FIGURE 4 an impelling device or stud gun of the type with which the stud cartridge shells of the present invention may be used is shown.
  • the device includes a stand frame 16 having a bottom flange portion 11 forming a fiat support on its under surface for engaging the adjacent surface of the article 13 into which the stud or nail 22 is to be driven.
  • Stand frame 11 is provided with a central bore 12 into the upper portion of which is slidably received the upper piston 14; having the impact surface .15 at its upper end and the cartridge chamber or firing chamber 15 at its lower end.
  • the cartridge 17 having the thicker bottom wall 18 in accordance with the invention is disposed in the chamber 16, such that the bottom wall 18 faces the upper surface of lower piston 19, positioned within bore 12 at the level of the flange 11.
  • Lower piston '19 is provided with a rim firing pin 20 on the upper surface thereof in 'line with the rim of bottom wall 18 of cartridge 17 and a recess 21 for receiving the upper end of bolt or nail '22.
  • the bottom wall 18 of the cartridge 17 will be caused to strike the firing pin 20.
  • the gas generated within cartridge chamber 16 i.e. by ignition of the propellant in the cartridge will cause bottom wall 18 to be cleanly separated from the remainder of the cartridge 17, at the same time impelling lower piston 19 and in turn bolt or nail 22 into the surface of the article 13 to be bolted or nailed.
  • bore 12 is suitably dimensioned for slidable displacement of upper piston 14 and lower piston 19 therewithin.
  • the stud driving device of FIGURE 4 is a single load device which may be readily reloaded by removing upper piston '14, for example, replacing the spent cartridge with a new one, and reinserting upper piston 14 into position for firing.
  • a new bolt or nail may be placed within recess 21 of lower piston 19 for driving.
  • the particular device shown is one in which the cartridge causes the working pressure to be directed toward the rear of the stud gun, in the manner of the working against the breech block of a gun. No forward pressures are realized, due to the large mass of the upper piston 14 as compared with the small mass of the lower piston '19.
  • a blank separating stud firing cartridge said cartridrge having a generally tubular casing containing a propellant therein, and a base aifixed at one end thereof, said base having a larger external diameter than said casing, said larger diameter forming a rim on said cartridge,
  • said base having an internal dimension larger than the internal diameter of said casing, the base structure defined by said internal dimension of said base containing a primer composition, said base structure and said primer composition forming a rim firing primer, the cross-sectional thickness of said base being substantially greater than said casing wall thickness, the difference in thickness being set forth in a clear line of delineation between said base and said casing, and said difierence in wall thickness and said clear line of delineation being sufiicient for rupture at the delineation line when said cartridge is fired by said rim primer, said base upon release by rupture from said casing acting upon a stud means to drive said stud means by high pressures generated by the propellant in said cartridge.
  • Cartridge according to claim 2 wherein said casing is generally cylindrical and a bottom annular end portion is provided which -frusto-conically outwardly extends to said base and interconnects said casing to said base.
  • Cartridge according to claim 2 wherein said base includes a bottom end wall portion connected to said casing and a reinforcing cap extending externally over said bottom end wall portion, said cap having an annular flange inwardly directed over and clampingly engaging the rim formed by the larger external diameter of the base at the bottom end wall portion thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Powder Metallurgy (AREA)
  • Furnace Charging Or Discharging (AREA)
US104081A 1960-05-09 1961-04-19 Stud cartridge shell Expired - Lifetime US3120808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED33298A DE1158408B (de) 1960-05-09 1960-05-09 Huelse fuer eine Kartusche mit Randfeuerungszuendung fuer Bolzensetzgeraete

Publications (1)

Publication Number Publication Date
US3120808A true US3120808A (en) 1964-02-11

Family

ID=7041688

Family Applications (1)

Application Number Title Priority Date Filing Date
US104081A Expired - Lifetime US3120808A (en) 1960-05-09 1961-04-19 Stud cartridge shell

Country Status (7)

Country Link
US (1) US3120808A (de)
AT (1) AT244878B (de)
BE (1) BE598726A (de)
CH (1) CH386288A (de)
DE (1) DE1158408B (de)
GB (1) GB960889A (de)
NL (2) NL263527A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162123A (en) * 1962-11-28 1964-12-22 Olin Mathieson Liquid propellant cartridge
CN108544429A (zh) * 2018-05-16 2018-09-18 阮自恒 一种简单安全射钉器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1603841C3 (de) * 1967-08-11 1982-02-25 Hilti AG, 9494 Schaan Pulverkraftbetriebenes Setzgerät zum Eintreiben von Befestigungselementen
DE19824122A1 (de) * 1998-05-29 1999-12-02 Dynamit Nobel Ag Anzündung des Treibladungspulvers einer Kunststoffkartusche, insbesondere für Bolzensetzgeräte

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1002038A (en) * 1911-01-03 1911-08-29 Western Cartridge Co Cartridge.
US1461013A (en) * 1920-07-13 1923-07-03 George Ramsey Rim-fire ammunition
US2262925A (en) * 1939-08-07 1941-11-18 Cawthern C Cole Projectile and barrel for gun type perforators
US2522208A (en) * 1946-06-26 1950-09-12 Remington Arms Co Inc Ammunition
FR1081535A (fr) * 1953-07-22 1954-12-21 Gevelot Sa Douille de munition
FR1082067A (fr) * 1953-08-01 1954-12-27 Gevelot S A Douille de munition en matière plastique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE345788C (de) *
DE67534C (de) * 1893-02-27 GRUSONWERK in Magdeburg—Buckau Aus Beutel und Metallhülse mit Zündvorrichtung zusammengesetzte Kartusche
DE594607C (de) * 1933-01-18 1934-03-19 Asturienne Mines Comp Royale Aus einem Stueck gezogene Patronenhuelse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1002038A (en) * 1911-01-03 1911-08-29 Western Cartridge Co Cartridge.
US1461013A (en) * 1920-07-13 1923-07-03 George Ramsey Rim-fire ammunition
US2262925A (en) * 1939-08-07 1941-11-18 Cawthern C Cole Projectile and barrel for gun type perforators
US2522208A (en) * 1946-06-26 1950-09-12 Remington Arms Co Inc Ammunition
FR1081535A (fr) * 1953-07-22 1954-12-21 Gevelot Sa Douille de munition
FR1082067A (fr) * 1953-08-01 1954-12-27 Gevelot S A Douille de munition en matière plastique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162123A (en) * 1962-11-28 1964-12-22 Olin Mathieson Liquid propellant cartridge
CN108544429A (zh) * 2018-05-16 2018-09-18 阮自恒 一种简单安全射钉器

Also Published As

Publication number Publication date
NL122769C (de)
AT244878B (de) 1966-01-25
GB960889A (en) 1964-06-17
NL263527A (de)
BE598726A (fr) 1961-04-14
CH386288A (de) 1964-12-31
DE1158408B (de) 1963-11-28

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