US3261528A - Cartridge carrier - Google Patents

Cartridge carrier Download PDF

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Publication number
US3261528A
US3261528A US404768A US40476864A US3261528A US 3261528 A US3261528 A US 3261528A US 404768 A US404768 A US 404768A US 40476864 A US40476864 A US 40476864A US 3261528 A US3261528 A US 3261528A
Authority
US
United States
Prior art keywords
cartridge
carrier
recess
cartridge carrier
front part
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
US404768A
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English (en)
Inventor
Courteix Joseph Barbier De
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.)
CIVILE D'ETUDE DE PROCEDES DE SCELLEMENT Ste
ILE D ETUDE DE PROCEDES DE SCE
Original Assignee
ILE D ETUDE DE PROCEDES DE SCE
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 ILE D ETUDE DE PROCEDES DE SCE filed Critical ILE D ETUDE DE PROCEDES DE SCE
Application granted granted Critical
Publication of US3261528A publication Critical patent/US3261528A/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

Definitions

  • the present invention relates to a cartridge carrier for receiving a cartridge for use in a gun for firing fasteners such as nails or the like.
  • a cartridge carrier comprising a forward part, defining a cylindrical external peripheral surface, a rearward part integral with said forward part and defining an external peripheral surface which is coaxial with said cylindrical external peripheral surface, and which increases rearwardly from a diameter approximately equal to the diameter of said cylindrical surface, said rearward part having inner peripheral surface portions defining a hole therethrough co-axial with said cylindrical surface, said forward part having a rearward surface closing said hole at the forward end, said parts defining, just rearwardly of said forward part, a zone of weakness co-axial with said cylindrical external peripheral surface for causing breakage of the carrier at said zone upon explosion of a cartridge therein.
  • the cartridge carrier serves to contain a cartridge and is intended to be disposed in a loading chamber located at the rear end of the barrel of a gun for firing nails and the like.
  • the cartridge carrier is advantageously made of a light material which is readily destroyed but yet is extremely economical, so that the cartridges are fitted previously into their carriers and a carrier is destroyed for each firing I operation.
  • the cartridge carrier is made from any material which possesses a certain degree of flexibility and which is capable of fracturing under predetermined conditions, the forward part of the carrier being so shaped that it can be fitted in the barrel and that it can be separated by fracture from the rearward part during explosion of the cartridge, so as to constitute a substantially fluid-tight plug between the projectile, such as a nail, and the thrust gases.
  • FIGURE 1 is a side elevation of a cartridge carrier
  • FIGURE 2 is an axial section therethrough
  • FIGURE 3 is an axial section of a modified version of the carrier, with a separate illustration of the forward part forming a plug after separation from the rearward part of the carrier, and
  • FIGURES 4 and 5 show a diagrammatic axial section, but to a smaller scale than that of FIGURE 2 of the cartridge carrier fitted in a loading chamber of a gun for firing nails and the like, respectively before and after the explosion of a cartridge in the carrier.
  • the cartridge carrier 1 has, at its rear or striker end, an outwardly projecting flange 1a for fitting co-axially in a recess forming part of a loading chamber T1 disposed at the rear end of a barrel T of the gun A.
  • the flange 1a is provided with a co-axial forwardly facing, frusto-conical shoulder which serves to abut a complementary co-axial rearwardly facing shoulder of the bore of the barrel T.
  • a frusto-conical external surface 1b which increases rearwardly in diameter.
  • the chamber T1 is of course correspondingly shaped.
  • the surface 1b is followed by a co-axial cylindrical bearing surface 1d the diameter of which is substantially the same as the minimum diameter of the surface 1b and is established with great precision having due regard to the diameter of the barrel, and taking into consideration the function of this forward part of the cartridge carrier.
  • the cartridge carrier is formed with a cylindrical recess 12 which opens rearwardly and the entrance of which is constituted by a circular chamber 1) which is of larger diameter than the remainder of the recess 1e and in which the bead of the cartridge C is lodged.
  • the smaller diameter of the recess 1e corresponds to the diameter of the cartridge C, but with a slightly forced fit for retaining the cartridge.
  • the length of the recess 16 is slightly greater than the length of the cartridge, so that there is a relatively small gap between the forward end of the cartridge and the closed forward end of the recess 10. In this manner, the volume of the combustion chamber is diminished.
  • the powder burns completely and instantaneously, without deflagration.
  • the explosive thrust effect is improved.
  • the forward end of the recess 1e is located in the zone of the junction of the surfaces lb, and 1d. It is thus in this weak zone that the wall thickness of the cartridge carrier is smallest and breakage takes place upon percussion and explosion of the cartridge.
  • the rearward end surface 1g of the forward part of the carrier which surface forms the forward end of the recess, has a slightly concave shape, so to facilitate breakage and to improve the fluid-tight qualities of the plug by imparting a certain degree of peripheral pressure.
  • the annular zone of weakness in which breakage occurs may be established, by preparing, during the manufacture of the cartridge carrier, for example during a moulding operation, a start of the breakage having regard to the result aimed at.
  • the base of the recess 1e is provided with an axial boss 1h around which is formed an annular groove 1k.
  • the cartridge carrier is made such that when the cartridge explodes, a peripheral lip 1m remains which circumferentially bounds the groove 1k.
  • the axial boss 1h has the effect of directing the gases against the lip 1m which is thus applied in a fluidtight manner against the wall of the bore of the barrel T, whilst, however, retaining the forward pressure of the explosive thrust.
  • the gun is loaded through the breech at the rearward end of the barrel T.
  • the gun is of a design in which the breech block or locking block B is withdrawn or moved aside in order to free the mouth of the loading chamber T1.
  • the projectile P for example a nail
  • the block B is then locked, the carrier 1 being firmly held in position thereby.
  • the cartridge carrier is broken at its weakest section, i.e. substantially at the level of the end face of the recess la.
  • the forward part of the cartridge carrier is thus separated from the rearward part and accompanies the projectile P during 3 its displacement along the barrel (see FIGURE 5).
  • the forward part acts as a sealing plug retaining the explosion gases at the rear of the projectile and thus causing the projectile to benefit from the full explosive thrust.
  • the cartridge carrier is made of a minimum of material, preferably a plastics material since the cartridge carrier is more economically manufactured from such a material.
  • Two advantages are obtained one being the economy in material, and the other being the greater strength of the carrier.
  • the relative flexibility of plastic materials would result in extrusion of the material under the explosive thrust, with the resultant disadvantages, if the thickness of the plastics carrier were relatively large, whereas the relatively small thickness provided makes the cartridge carrier extremely strong and non-deformable, since the metal walls of the loading chamber T1 to some extent reinforces the thin plastic material, thereby preventing excessive deformation.
  • a carrier is provided which has a thickness varying between 1.5 mm. and 0.5 mm. about the cartridge;
  • a cartridge carrier is obtained which is the shortest possible but which gives a plug which is as long as possible, thus improving the fluid-tightness and thrust effect on the projectile;
  • the manufacture from a moulded material is economical and gives high precision and excellent quality in the cartridge carrier.
  • a cartridge holder comprising a body adapted for being inserted into a loading chamber of a gun; said body including a front part having a cylindrical external surface and a solid flat front end surface adapted for contacting a fastener disposed adjacent thereto in said barrel, and a rear part extending rearwardly from the front part and having a diverging frusto-conical surface, said rear part including a stop shoulder having a conical surface at the rearward end of said frusto-conical surface which is adapted for being retained in said loading chamher, said body having a recess opening at the rear end of the rear part and extending into the front part and defining a portion between said front and rear parts which is of minimum thickness whereby the parts will become separated at said portion upon detonation of a cartridge which is placed in said recess, said front part having a surface forming the bottom of said recess of curved shape to direct gases produced by said detonation rearwardly and outwardly.
  • a cartridge holder as claimed in claim 1 comprising a cylindrical surface extending rearwardly from said conical surface of said stop shoulder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Auxiliary Devices For Music (AREA)
US404768A 1963-11-06 1964-10-19 Cartridge carrier Expired - Lifetime US3261528A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8804A FR1378357A (fr) 1963-11-06 1963-11-06 Porte-cartouche destiné notamment à tirer des pointes et projectiles au moyen des pistolets et appareils de scellement

Publications (1)

Publication Number Publication Date
US3261528A true US3261528A (en) 1966-07-19

Family

ID=9693240

Family Applications (1)

Application Number Title Priority Date Filing Date
US404768A Expired - Lifetime US3261528A (en) 1963-11-06 1964-10-19 Cartridge carrier

Country Status (7)

Country Link
US (1) US3261528A (enrdf_load_stackoverflow)
BE (1) BE648996A (enrdf_load_stackoverflow)
DE (1) DE1970430U (enrdf_load_stackoverflow)
ES (1) ES301029A1 (enrdf_load_stackoverflow)
FI (1) FI46694C (enrdf_load_stackoverflow)
FR (1) FR1378357A (enrdf_load_stackoverflow)
GB (1) GB1050026A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489329A (en) * 1966-03-05 1970-01-13 Hilti Ag Cartridge-actuated fastener driving tool
US4832265A (en) * 1985-11-19 1989-05-23 Societe Nationale Des Poudres Et Explosifs Perforator-injector with an internal percussion mass
EP0263092A3 (en) * 1986-10-02 1990-04-04 Burndy Corporation Tool for use in assembling an electrical connector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6171042B1 (en) 1997-12-19 2001-01-09 Illinois Tool Works Inc. Hardened steel pin, pin and washer fastener, washer for fastener, and pin-making method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE567900A (enrdf_load_stackoverflow) * 1957-05-29
US2869127A (en) * 1951-09-01 1959-01-20 Olin Mathieson Tool for driving powder-actuated fasteners
US3048849A (en) * 1956-01-31 1962-08-14 Olin Mathieson Explosively powered apparatus
US3074070A (en) * 1956-08-25 1963-01-22 Prospection D Inv S Tech Spit Explosive actuated pin driver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869127A (en) * 1951-09-01 1959-01-20 Olin Mathieson Tool for driving powder-actuated fasteners
US3048849A (en) * 1956-01-31 1962-08-14 Olin Mathieson Explosively powered apparatus
US3074070A (en) * 1956-08-25 1963-01-22 Prospection D Inv S Tech Spit Explosive actuated pin driver
BE567900A (enrdf_load_stackoverflow) * 1957-05-29

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489329A (en) * 1966-03-05 1970-01-13 Hilti Ag Cartridge-actuated fastener driving tool
US4832265A (en) * 1985-11-19 1989-05-23 Societe Nationale Des Poudres Et Explosifs Perforator-injector with an internal percussion mass
EP0263092A3 (en) * 1986-10-02 1990-04-04 Burndy Corporation Tool for use in assembling an electrical connector

Also Published As

Publication number Publication date
FR1378357A (fr) 1964-11-13
BE648996A (enrdf_load_stackoverflow) 1964-10-01
ES301029A1 (es) 1964-09-16
DE1970430U (de) 1967-10-12
GB1050026A (enrdf_load_stackoverflow)
FI46694B (enrdf_load_stackoverflow) 1973-02-28
FI46694C (fi) 1973-06-11

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