US2549993A - Breechblock for explosively actuated fastening tools - Google Patents

Breechblock for explosively actuated fastening tools Download PDF

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Publication number
US2549993A
US2549993A US684935A US68493546A US2549993A US 2549993 A US2549993 A US 2549993A US 684935 A US684935 A US 684935A US 68493546 A US68493546 A US 68493546A US 2549993 A US2549993 A US 2549993A
Authority
US
United States
Prior art keywords
projectile
barrel
flange
tool
cartridge
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
US684935A
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English (en)
Inventor
Stanley A Temple
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.)
PORTABLE IND Inc
PORTABLE INDUSTRIES Inc
Original Assignee
PORTABLE IND 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
Priority to BE520595D priority Critical patent/BE520595A/xx
Application filed by PORTABLE IND Inc filed Critical PORTABLE IND Inc
Priority to US684935A priority patent/US2549993A/en
Priority to GB10843/47A priority patent/GB653503A/en
Application granted granted Critical
Publication of US2549993A publication Critical patent/US2549993A/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
    • B25C1/12—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

Definitions

  • This invention relates to the insertion of fasteners. It has to do particularly with explosive propelled fastenings for attaching mountings in a masonry construction.
  • Asalient object of the invention relates to the improvement of a breech block for use in explosively actuated fastener driving tools in whichthe breech block construction is such as to permit the breech block to be inserted either end foremost in the breech end of the barrel of the tool.
  • FIG. 1 is a side View, partly in section, of a projectile embedded part way in a concrete wall, the enlarged and threaded head of the projectile extending outwardly from the wall.
  • Fig. 2 is a side view of the same projectile in its original condition before being placed in a. tool and fired.
  • Fig. 3 is a similar view of a projectile with an. internally threaded head in its original unfired. condition.
  • Fig. 4 is a side view partly in section of theprojectile of Fig. 3 after it has been fired from a tool and is embedded in a masonry body, with a threaded eye-bolt mounted in the embedded pro-- jectile.
  • Fig. 5 is a side View, partly in section of an unthreaded projectile fired into a concrete wall. through one flange of an angle iron for securing: the latter to the wall, and
  • Fig. 6 is a view, principally in central longi-- tudinal section, of a tool for firing any of the: illustrated projectiles.
  • Barrel I0 is provided with a bore II and. a counterbore I2, the latter running out at theinner end of the barrel.
  • a breech block I3 provided with a bore to fit a blank cartridge I4 of standard size. Both.
  • .ends of the breech block I3 have counterbores I5 in order that the flange I6 of the cartridge may be inserted flush with the end of the breech block. This arrangement permits the block to be inserted in the barrel either end foremost.
  • the externally threaded projectile of Fig. 2 and the internally threaded projectile of Fig. 3 are provided at their rear ends with outwardly extending annular flanges i! and I? respectively which are adapted to bear against the shoulder formed at the junction of the bores II and I2 of the tool. With this flange in place between this shoulder and the breech block the latter stands flush with the inner end of barrel It.
  • the head I8 of the externally threaded projectile has an undercut I9 extending a substantial distance along the projectile in front of the flange I1, and forwardly of this undercut the balance 'of the head I8 is threaded as shown at 20.
  • external diameter of the threaded portion 20 is such that it fits slidably within the bore H of the tool and serves to guide the projectile in its forward travel through the bore from the position of Fig. 6 to the flared end 2! of the bore.
  • the cartridge I i is exploded pressure builds up behind the projectile until it reaches a value suflicient to sever the flange II, after which the projectile is driven out of the tool, the severed flange [1 remaining temporarily in the tool.
  • the flange is severed or broken away from the projectile close to the undercut I9 because its circle of minimum length occurs there, but the break is not necessarily a clean and smooth one.
  • a rough edge 22 is left on the projectile, as indicated in Fig. 1. This edge however is of less diameter than the root diameter of the threads of threaded portion 20, and hence offers no obstruction to the application of a nut or other internally threaded member to be attached to the embedded projectile.
  • the internally threaded projectile of Fig. 3 has a smooth head 24 of the same diameter as the external diameter of the threaded portion 20 of the projectile of Fig. 2. Head 24 therefore fits slidably Within the bore ll of thetoo'l and flange ll engages the shoulder between bores l and l l. When this projectile is in place in the tool and the cartridge behind it is exploded flange I1 is sheared off quite cleanly along aouter surface of the metal object. When attach- 1 ment of the metal object to the body'is the only requirement the head of the projectile need not be threaded.
  • a metal plate such as 25 of Fig. 1 may be held againstthe'wall and an externally threaded projectile fired therethrough into the wall, as shown in that figure.
  • Fig. 4 illustrates one use of an internally threaded projectile.
  • the cartridge selected is one having a charge of such strength that the entire projectile is forced into the wall flush with the exterior surface thereof. projectile is driven into the wall only until the head thereof engages the exterior surface. either event the internal threads 35 may receive an externally threaded stud of any desired type,
  • Fig. 5 I have shown the invention applied to the problem of securing an angle iron 80 to a concrete or other masonry wall.
  • the head iii of the projectile is not threaded.
  • the angle iron is held against the wall by a helper and the operator fires the projectcile through a flange of the angle iron, the projectile coming to a stop when the shoulder 62 of the projectile head 5
  • Structural steel of other cross-sections may of course be secured to a wall, floor or ceiling by the same means.
  • the tool for firing these projectiles may be ofany desired construction. That herein illustrated comprises a carrier 35 that is removably threaded at 36 to the rear end of barrel l0, and is provided with an end surface 3'! that abuts against the barrel and provide a backing for breech block I3 and 'thefla'nged end of cartridge 14.- In order to facilitate the connection and disconnection of the-barrel Ill and carrier 35,
  • barrel Ill may be provided withspann'erwrench holes 40.
  • the operator separates barrel II] from carrier 35 by unscrewing it. He then shakes loose and drops out of the barrel the breech block i3, the exploded cartridge I4 and the severed projectile flange IT or H", puts a new projectile into the bore ll until the flange H or ll thereof engages the shoulder at the junction of the two bores II and i2, then inserts the breach block l3 either end foremost and finally puts a new cartridge into the breech block, after which the barrel I0 is again threaded into the carrier 35.
  • carrier 35 has a bore 42, 43', in which is mounted a firing pin 44 that is normally held 111* retracted position by a coil spring 45.
  • a sleeve 46 provided with a, handle 41 is mounted to slide upon carrier 35, and may be" held against rotation by a pin 48 mounted in the carrier cooperating with a slot 49 in the sleeve.
  • a centrally disposed plunger 50 rigid with the sleeve 46 is pushed vigorously forward by one hand of the operator whose other hand grasps the barrel Ii], thereby causing the firing pin to set' off the cartridge.
  • Coil spring 52 normally holds the sleeve 46 in retracted position.
  • Theforwardend of the barrel may be provided with a'conical guard 55 for c'uttingoff flash from the cartridge when the tool is discharged.
  • projectiles of the kinds illustrated, and others having heads of the proper diameter to fit within the bore of the tool may be embedded in masonry bodiesvery'rapidly as compared with the conventional means of mounting fastenings in such bodies.
  • the disconformed with considerable dispatch, and the mounting of the projectile in the masonry body is then of course instantaneous. Consequently various brackets, plates, fastenings .and the like may be secured to buildings of concrete or other masonry with rapidity and at small cost.
  • the projectiles are'formed of steel and are preferably pointed, as shown.
  • a barrel having a bore for guiding the projectile, said barrel having acounterbore adapted to receive a flange on a, projectile, a breech blockof uniform external diameter slidably mounted in said counterborefor engagement with said flange, said breech block having a central bore for the reception of a flanged blank cartridge .and'being counterbored at both ends for the reception of the cartridge flange, whereby said breech block may be insertedeither end first, backing means for the outer end'of said breech block, and means for firing said cartridge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US684935A 1946-07-19 1946-07-19 Breechblock for explosively actuated fastening tools Expired - Lifetime US2549993A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE520595D BE520595A (en, 2012) 1946-07-19
US684935A US2549993A (en) 1946-07-19 1946-07-19 Breechblock for explosively actuated fastening tools
GB10843/47A GB653503A (en) 1946-07-19 1947-04-23 Improvements in or relating to fastenings for masonry walls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US684935A US2549993A (en) 1946-07-19 1946-07-19 Breechblock for explosively actuated fastening tools

Publications (1)

Publication Number Publication Date
US2549993A true US2549993A (en) 1951-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
US684935A Expired - Lifetime US2549993A (en) 1946-07-19 1946-07-19 Breechblock for explosively actuated fastening tools

Country Status (3)

Country Link
US (1) US2549993A (en, 2012)
BE (1) BE520595A (en, 2012)
GB (1) GB653503A (en, 2012)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594275A (en) * 1951-10-23 1952-04-29 Baisch Richard Karl Armor shield for projectile type fastenings
DE898880C (de) * 1951-07-29 1953-12-03 Broekelmann Einschiessbolzen mit Kartusche
US2665421A (en) * 1950-02-11 1954-01-12 Stanley A Temple Projectile launching device
US2673980A (en) * 1950-09-09 1954-04-06 Robert G Ballachey Strap and means for mounting the same
US2675546A (en) * 1953-03-27 1954-04-20 Remington Arms Co Inc Safety shield for explosively driven tools
US2722003A (en) * 1949-12-29 1955-11-01 Powder Power Tool Corp Method of stud driving power control
US2731636A (en) * 1952-08-20 1956-01-24 Prospection & D Inv S Tech Spi Improvements in explosively actuated fastener driving tools
US2740965A (en) * 1952-02-29 1956-04-10 Joseph B Cox Stud driving tool
US2759185A (en) * 1955-06-23 1956-08-21 Remington Arms Co Inc Chamber bushing for stud driver
US2768552A (en) * 1954-03-18 1956-10-30 Remington Arms Co Inc Explosive stud having ogival point and reduced dimension tip projecting therefrom
US2768375A (en) * 1955-08-04 1956-10-30 Remington Arms Co Inc Cartridge-powered tool
US2775762A (en) * 1951-09-10 1957-01-01 Hilti Martin Explosively actuated fastener driving tool
US2778020A (en) * 1949-12-29 1957-01-22 Oregon Saw Chain Corp Stud driving tool
US2835894A (en) * 1951-11-21 1958-05-27 Behrend Herbert Explosion-operated tool
DE969590C (de) * 1951-04-27 1958-06-19 Hammerwerk Richard Naescher Vorrichtung zum Einschiessen von Stahlduebeln, Bolzen oder anderen Befestigungsmitteln in Mauerwerk, Eisentraeger u. dgl.
US2853914A (en) * 1950-03-30 1958-09-30 Behrend Herbert Explosive stud with grooved, flexible guiding and retaining element
US2898964A (en) * 1953-12-23 1959-08-11 Olin Mathieson Explosively driven stud with split shank locking means
US2925604A (en) * 1956-08-28 1960-02-23 Olin Mathieson Safety control means for explosively actuated tools
US2925603A (en) * 1955-09-06 1960-02-23 Olin Mathieson Explosive actuated device
DE1080039B (de) * 1952-01-16 1960-04-14 Hammerwerk Richard Naescher Vorrichtung zum Einschiessen von Stahlduebeln, Bolzen oder anderen Befestigungsmitteln in Mauerwerk, Eisentraeger u. dgl.
DE973783C (de) * 1951-06-23 1960-06-02 Langensiepen Kg M Verfahren und Vorrichtung zur Herstellung von Duebelloechern
DE1095217B (de) * 1951-09-01 1960-12-15 Ramset Fasteners Inc Bolzenschiessgeraet
US3045521A (en) * 1958-07-09 1962-07-24 Bernard C Eisenberg Releasable tool for clicker die press
US3054110A (en) * 1955-06-22 1962-09-18 Remington Arms Co Inc Powder actuated tool
US3066302A (en) * 1956-06-08 1962-12-04 Olin Mathieson Power tool
DE1145109B (de) * 1951-04-30 1963-03-07 Rudolf Dietz Dr Ing Bolzensetzgeraet zum Einschiessen von Befestigungsbolzen in Bauteile
US3521520A (en) * 1967-06-14 1970-07-21 Hilti Ag Securing element
US3665583A (en) * 1968-05-09 1972-05-30 Ladd Tool Co Inc Suspension clip structure and apparatus and method for securing same to a work surface
US5135150A (en) * 1991-01-02 1992-08-04 Chun Wang T Pole-type powder actuated tool
US20100111640A1 (en) * 2008-11-04 2010-05-06 Hilti Aktiengesellschaft Threaded bolt
CN106168247A (zh) * 2016-08-25 2016-11-30 安徽六方重联机械股份有限公司 一种弹性螺栓

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2849139C2 (de) * 1978-11-13 1986-10-30 Hilti Ag, Schaan Verfahren zum Setzen von Befestigungselementen in Beton

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US44164A (en) * 1864-09-13 Improvement in stop-cocks
US623418A (en) * 1899-04-18 Jeremiah o meara
US2038229A (en) * 1932-09-28 1936-04-21 Martin Ross Flushing valve
US2050047A (en) * 1933-12-29 1936-08-04 American Steel & Wire Co Rail bond installation
US2400878A (en) * 1941-05-10 1946-05-28 Stephen M Dunn Method of inserting bolts into concrete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US44164A (en) * 1864-09-13 Improvement in stop-cocks
US623418A (en) * 1899-04-18 Jeremiah o meara
US2038229A (en) * 1932-09-28 1936-04-21 Martin Ross Flushing valve
US2050047A (en) * 1933-12-29 1936-08-04 American Steel & Wire Co Rail bond installation
US2400878A (en) * 1941-05-10 1946-05-28 Stephen M Dunn Method of inserting bolts into concrete

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722003A (en) * 1949-12-29 1955-11-01 Powder Power Tool Corp Method of stud driving power control
US2778020A (en) * 1949-12-29 1957-01-22 Oregon Saw Chain Corp Stud driving tool
US2665421A (en) * 1950-02-11 1954-01-12 Stanley A Temple Projectile launching device
US2853914A (en) * 1950-03-30 1958-09-30 Behrend Herbert Explosive stud with grooved, flexible guiding and retaining element
US2673980A (en) * 1950-09-09 1954-04-06 Robert G Ballachey Strap and means for mounting the same
DE969590C (de) * 1951-04-27 1958-06-19 Hammerwerk Richard Naescher Vorrichtung zum Einschiessen von Stahlduebeln, Bolzen oder anderen Befestigungsmitteln in Mauerwerk, Eisentraeger u. dgl.
DE1145109B (de) * 1951-04-30 1963-03-07 Rudolf Dietz Dr Ing Bolzensetzgeraet zum Einschiessen von Befestigungsbolzen in Bauteile
DE973783C (de) * 1951-06-23 1960-06-02 Langensiepen Kg M Verfahren und Vorrichtung zur Herstellung von Duebelloechern
DE898880C (de) * 1951-07-29 1953-12-03 Broekelmann Einschiessbolzen mit Kartusche
DE1095217B (de) * 1951-09-01 1960-12-15 Ramset Fasteners Inc Bolzenschiessgeraet
US2775762A (en) * 1951-09-10 1957-01-01 Hilti Martin Explosively actuated fastener driving tool
US2594275A (en) * 1951-10-23 1952-04-29 Baisch Richard Karl Armor shield for projectile type fastenings
US2835894A (en) * 1951-11-21 1958-05-27 Behrend Herbert Explosion-operated tool
DE1080039B (de) * 1952-01-16 1960-04-14 Hammerwerk Richard Naescher Vorrichtung zum Einschiessen von Stahlduebeln, Bolzen oder anderen Befestigungsmitteln in Mauerwerk, Eisentraeger u. dgl.
US2740965A (en) * 1952-02-29 1956-04-10 Joseph B Cox Stud driving tool
US2731636A (en) * 1952-08-20 1956-01-24 Prospection & D Inv S Tech Spi Improvements in explosively actuated fastener driving tools
US2675546A (en) * 1953-03-27 1954-04-20 Remington Arms Co Inc Safety shield for explosively driven tools
US2898964A (en) * 1953-12-23 1959-08-11 Olin Mathieson Explosively driven stud with split shank locking means
US2768552A (en) * 1954-03-18 1956-10-30 Remington Arms Co Inc Explosive stud having ogival point and reduced dimension tip projecting therefrom
US3054110A (en) * 1955-06-22 1962-09-18 Remington Arms Co Inc Powder actuated tool
US2759185A (en) * 1955-06-23 1956-08-21 Remington Arms Co Inc Chamber bushing for stud driver
US2768375A (en) * 1955-08-04 1956-10-30 Remington Arms Co Inc Cartridge-powered tool
US2925603A (en) * 1955-09-06 1960-02-23 Olin Mathieson Explosive actuated device
US3066302A (en) * 1956-06-08 1962-12-04 Olin Mathieson Power tool
US2925604A (en) * 1956-08-28 1960-02-23 Olin Mathieson Safety control means for explosively actuated tools
US3045521A (en) * 1958-07-09 1962-07-24 Bernard C Eisenberg Releasable tool for clicker die press
US3521520A (en) * 1967-06-14 1970-07-21 Hilti Ag Securing element
US3665583A (en) * 1968-05-09 1972-05-30 Ladd Tool Co Inc Suspension clip structure and apparatus and method for securing same to a work surface
US5135150A (en) * 1991-01-02 1992-08-04 Chun Wang T Pole-type powder actuated tool
US20100111640A1 (en) * 2008-11-04 2010-05-06 Hilti Aktiengesellschaft Threaded bolt
US8517654B2 (en) * 2008-11-04 2013-08-27 Hilti Aktiengesellschaft Threaded bolt
CN106168247A (zh) * 2016-08-25 2016-11-30 安徽六方重联机械股份有限公司 一种弹性螺栓

Also Published As

Publication number Publication date
BE520595A (en, 2012)
GB653503A (en) 1951-05-16

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