US3112487A - Explosively actuated stud driving apparatus - Google Patents

Explosively actuated stud driving apparatus Download PDF

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Publication number
US3112487A
US3112487A US169916A US16991662A US3112487A US 3112487 A US3112487 A US 3112487A US 169916 A US169916 A US 169916A US 16991662 A US16991662 A US 16991662A US 3112487 A US3112487 A US 3112487A
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US
United States
Prior art keywords
chamber
guide
stud
hammer member
tubular guide
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
US169916A
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English (en)
Inventor
Hilti Martin
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.)
Anstalt fuer Montage Technik
Original Assignee
Anstalt fuer Montage Technik
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 Anstalt fuer Montage Technik filed Critical Anstalt fuer Montage Technik
Application granted granted Critical
Publication of US3112487A publication Critical patent/US3112487A/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
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil
    • B25C1/146—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil operated by a hammer blow

Definitions

  • This invention relates to stud-driving apparatus of the class wherein an explosive charge is used to provide at least part of the force for driving the stud. More in particular, this invention relates to means for properly disposing of the combustion products of the explosive charge.
  • a tool of the type for which the present invention is especially adapted is shown in copending application Serial No. 795,819, filed February 26, 1959 by the present applicant.
  • a tool comprises a tubular guide member within which is slidably mounted a hammer member for applying the required driving force to thestud.
  • a piston member Above the hammer member is a piston member the lower end of which carries a cartridge and the upper end of which is adapted to be struck, as by a hand-held driver, in order to fire the cartridge by impacting its base against the hammer member.
  • the tubular guide also is provided, at its lower end, with radially extending passages through which the combustion gases from the cartridge can pass into a sealed annular expansion chamber located between the outer wall of the tubular guide and the inner wall of a surrounding jacket which serves as the handle for the tool.
  • combustion products tend to accumulate along the walls of the gas expmsion chamber, particularly in the region directly opposite the exit openings of the passages, and thus it is necessary periodically to disassemble the tool to clean out the residues.
  • this periodic disassembly and cleaning is substantially minimized by providing additional passages communicating between the upper end of the expansion chamber and the upper interior of the tubular guide.
  • the tool includes a tubular guide 1 within which is slidably mounted a piston member 2 having at its lower end a head 3 closely fitted to the tubular guide to seal the explosive gases.
  • a slidable hammer member 13 which also is sealiugly fitted to the tubular guide.
  • the upper surface of the hammer member is provided with a firing pin 15 adapted to engage the base of a cartridge positioned in a recess in the piston head 3.
  • the reduceddi-ameter portion 14 of the hammer member 13 is arranged to engage the head of the stud, and the shank of the stud is guided in the usual way by means of a metal washer held in place by a magnet.
  • tubular guide 1 At the lower end of the tubular guide 1 are two passages 22 which extend obliquely, upwardly and outwardly, to connect the interior of the tubular guide to an annular chamber 23 formed by an outer jacket 4 with a rubber handle 24.
  • passages 22 which extend obliquely, upwardly and outwardly, to connect the interior of the tubular guide to an annular chamber 23 formed by an outer jacket 4 with a rubber handle 24.
  • any residues which accumulate on the upper inner wall of the tubular guide 1 are automatically scraped 01f by the piston head 3 when the piston is moved back to its uppermost position. Such accumulations of combustion products can readily be cleaned off when the piston is removed from the tool.
  • the outer edge of the upper surface 7 of the piston head 3 preferably is made sharp in order to cut through any residue accumulated on the inner wall of the tubular guide.
  • the outer jacket 4 and the rubber handle 24 can then be removed by sliding them off the tubular guide 1.
  • the exterior surface of the tubular guide 1 and the interior surface of the outer jacket 4, which in the assembled position form the expansion chamber 23, are thus exposed and can be cleaned whenever necessary.
  • Stud-driving apparatus comprising guide means defining an enclosed slideway, a hammer member slidably mounted in said guide means for driving a stud into a workpiece, a piston member slidably mounted in said guide means above said hammer member, one of said members having means to fire a cartridge carried by the other member for propelling said hammer member against the stud, means connected to said guide means and forming a gas expansion chamber, first passage means connecting the lower interior of said sli-deway to said chamber to direct the cartridge combustion gases into said chamber, and second passage means connecting said chamber and the upper interior of said slideway to permit combustion gases to escape from said chamber to reenter the interior of the slideway.
  • Stud-driving apparatus comprising a tubular guide, a hammer member slidably mounted in said guide for driving a stud into a workpiece, said hammer member forming a sealing fit with said guide, a piston member having a head slida'bly mounted in said guide above said hammer member and forming a sealing fit with said guide, one of said members having means to fire a cartridge carried by the other member, said guide having a gas expansion chamber therein, said guide having a first passage connecting said chamber to the lower interior of said guide to permit the explosive gases from said cartridge to enter said chamber, said guide having a second passage connecting said chamber to the upper interior of said guide to permit combustion gases to escape from said chamber and to reenter the interior of said guide above said piston member head.
  • Stud-driving apparatus comprising first means having a bore, a hammer member slidably mounted in said bore and adapted to engage a stud to apply driving force thereto, a piston member slidably mounted in said bore above said hammer member, one of said members having means to fire a cartridge carried by the other member to force said hammer member against the stud, second means surrounding said first means and spaced therefromto form a gas expansion chamber, said first means having a first passage extending between said chamber and the lower end of said bore to permit the discharge of combustion gases after said hammer member has passed the entrance to said first passage, said first means having a second passage extending between said chamber and the upper end of said bore to permit said combustion gases to escape out of said chamber.
  • Stud-driving apparatus comprising a tubular guide, a hammer member slidably mounted in said guide for driving a stud into a workpiece, said hammer member forming a sealing fit with said guide, a piston member having a head slidably mounted in said guide above said hammer member and forming a sealing fit with said guide, one of said members having means to fire a cartridge carried by the other member, said guide having a gas expansion chamber therein, said guide having a first passage connecting said chamber to the lower interior of said guide to permit the explosive gases from said cartridge to enter said chamber, said first passage extending at an oblique angle With respect to the longitudinal axis of said tubular guide, said guide having a second passage connecting said chamber to the upper interior of said guide to permit combustion gases to escape from said chamber and to reenter the interior of said guide above said piston member head.
  • Stud-driving apparatus comprising first means having a bore, a hammer member slidably mounted in said bore and adapted to engage a stud to apply driving force thereto, a piston member slida-bly mounted in said bore above said hammer member, one of said members having means to fire a cartridge carried by the other member to force said hammer member against the stud, second means surrounding said first means and spaced therefrom to form a gas expansion chamber, said first means having a first passage extending between said chamber and the lower end of said bore to permit the discharge of combustion gases after said hammer member has passed the entrance to said first passage, said first means having a second passage extending between said chamber and the upper end of said bore to permit said combustion gases to escape out of said chamber and back to said bore above said piston member, the upper surface of said piston member having a sharp side edge to provide a scraping action for rernoving combustion products from the walls of said bore.
  • Stud-driving apparatus comprising tubular guide means having a central bore, a hammer member slidably mounted in said bore and adapted to engage a stud to apply driving force thereto, a piston member slidably mounted in said bore above said hammer member, one of said members having means to fire a cartridge carried by the other member to force said hammer member against the stud, jacket means surrounding said tubular guide means and spaced therefrom to form an annular gas expansion chamber, said tubular guide means having a first passage connecting the lower end of said bore to said expansion chamber to direct the combustion gases into said chamber after said hammer member has passed the entrance to said first passage during a stud driving operation, said first passage extending outwardly an-d upwardly at an oblique angle with respect to the longitudinal axis of said tubular guide means, said tubular guide means having a second passage connecting said chamber to the upper end of said bore to perrnitsaid combustion gases to escape out of said chamber and into said bore above said piston member, said second passage extending inwardly

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US169916A 1961-02-02 1962-01-30 Explosively actuated stud driving apparatus Expired - Lifetime US3112487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA36639A DE1151769B (de) 1961-02-02 1961-02-02 Setzgeraet

Publications (1)

Publication Number Publication Date
US3112487A true US3112487A (en) 1963-12-03

Family

ID=6929750

Family Applications (1)

Application Number Title Priority Date Filing Date
US169916A Expired - Lifetime US3112487A (en) 1961-02-02 1962-01-30 Explosively actuated stud driving apparatus

Country Status (6)

Country Link
US (1) US3112487A (enrdf_load_html_response)
CH (1) CH376451A (enrdf_load_html_response)
DE (1) DE1151769B (enrdf_load_html_response)
DK (1) DK106905C (enrdf_load_html_response)
GB (1) GB955577A (enrdf_load_html_response)
NL (1) NL109762C (enrdf_load_html_response)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172123A (en) * 1962-10-03 1965-03-09 Helderman Explosive actuated tool and method for driving a fastening stud or similar element
US3473717A (en) * 1965-12-06 1969-10-21 Hilti Ag Device for securing elements into hard surfaces
US3658229A (en) * 1970-07-30 1972-04-25 Omark Industries Inc Stud driving tool
US3895752A (en) * 1972-05-02 1975-07-22 Hilti Ag Explosive powder driven setting gun with silencing device
US3997096A (en) * 1974-03-08 1976-12-14 Hilti Aktiengesellschaft Arrangement for cooling an explosive charge-driven setting gun
US5767434A (en) * 1995-12-21 1998-06-16 Hilti Aktiengesellschaft Explosive powder charge operated setting tool
US20050005570A1 (en) * 2003-05-26 2005-01-13 Freyssinet International (Stup) Method of overlocking at least one strand in an anchoring block and system for overlocking at least one strand in an anchoring block

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU529351B2 (en) * 1978-04-05 1983-06-02 Olin Corporation Powder actuated fastening tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773259A (en) * 1954-05-17 1956-12-11 Joseph B Cox Safety shield for explosively driven tools
FR1221131A (fr) * 1958-02-27 1960-05-31 Anstalt Fuer Montage Technik Appareil pour l'enfoncement de tiges de fixation, notamment de clous, aiguilles ou pièces analogues, dans des matériaux durs, tels que pierre, béton, fer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773259A (en) * 1954-05-17 1956-12-11 Joseph B Cox Safety shield for explosively driven tools
FR1221131A (fr) * 1958-02-27 1960-05-31 Anstalt Fuer Montage Technik Appareil pour l'enfoncement de tiges de fixation, notamment de clous, aiguilles ou pièces analogues, dans des matériaux durs, tels que pierre, béton, fer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172123A (en) * 1962-10-03 1965-03-09 Helderman Explosive actuated tool and method for driving a fastening stud or similar element
US3473717A (en) * 1965-12-06 1969-10-21 Hilti Ag Device for securing elements into hard surfaces
US3658229A (en) * 1970-07-30 1972-04-25 Omark Industries Inc Stud driving tool
US3895752A (en) * 1972-05-02 1975-07-22 Hilti Ag Explosive powder driven setting gun with silencing device
US3997096A (en) * 1974-03-08 1976-12-14 Hilti Aktiengesellschaft Arrangement for cooling an explosive charge-driven setting gun
US5767434A (en) * 1995-12-21 1998-06-16 Hilti Aktiengesellschaft Explosive powder charge operated setting tool
AU704410B2 (en) * 1995-12-21 1999-04-22 Hilti Aktiengesellschaft Explosive powder charge operated setting tool
US20050005570A1 (en) * 2003-05-26 2005-01-13 Freyssinet International (Stup) Method of overlocking at least one strand in an anchoring block and system for overlocking at least one strand in an anchoring block
US7614134B2 (en) * 2003-05-26 2009-11-10 Freyssinet Method of overlocking at least one strand in an anchoring block and system for overlocking at least one strand in an anchoring block

Also Published As

Publication number Publication date
CH376451A (de) 1964-03-31
DK106905C (da) 1967-03-28
NL109762C (enrdf_load_html_response)
GB955577A (en) 1964-04-15
DE1151769B (de) 1963-07-18

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