US3556378A - Explosive actuated gun for driving anchoring or fastening elements into hard receiving material - Google Patents

Explosive actuated gun for driving anchoring or fastening elements into hard receiving material Download PDF

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Publication number
US3556378A
US3556378A US828878A US3556378DA US3556378A US 3556378 A US3556378 A US 3556378A US 828878 A US828878 A US 828878A US 3556378D A US3556378D A US 3556378DA US 3556378 A US3556378 A US 3556378A
Authority
US
United States
Prior art keywords
cartridge
stop
gun
housing part
arm
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
US828878A
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English (en)
Inventor
Wolfgang Bayer
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.)
Hilti AG
Original Assignee
Hilti 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
Priority claimed from DE19681703523 external-priority patent/DE1703523C3/de
Application filed by Hilti AG filed Critical Hilti AG
Application granted granted Critical
Publication of US3556378A publication Critical patent/US3556378A/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
    • B25C1/105—Cartridge ejecting mechanisms and latch mechanisms

Definitions

  • An explosive-actuated gun for driving anchoring or fastening elements into hard receiving material, includes a first gun part formed with a cartridge chamber arranged to receive a cartridge with a tight fit, and a housing part pivoted to the first gun part and containing the cartridge detonating mechanism.
  • a two-arm pivoted lever for extracting a spent cartridge, and has one arm engageable beneath the cartridge rim with the other arm, upon relative pivoting of the gun parts, cooperating with a stop on the housing part to pivot the lever.
  • the housing part is formed with a slot receiving the stop for displacement parallel to the gun axis, and means limit such displacement of the stop under the bias of spring means which bias said stop outwardly.
  • a known type of explosive-actuated bolt-setting gun for driving anchoring elements into hard receiving materials, such as steel, concrete, etc., is provided with a two-arm ejection lever journaled in a fulcrum for removing a spent cartridge having a tight fit in a cartridge chamber.
  • One arm of this lever engages beneath the bottom edge or rim of the cartridge. while the other arm cooperates, responsive to pivoting of the gun part containing the cartridge chamber relative to the gun part containing the cartridge detonating mechanism. about an axis transverse to the longitudinal axis of the gun, with the stop on the gun part containing the cartridge detonating mechanism.
  • a disadvantage of guns of this type is that the cartridge, after it has been loosened from the tight fit in the cartridge chamber, either must be removed by hand or the gun must be held with the cartridge chamber down and the cartridge shaken out of the chamber. This is frequently time-consuming, because even the loosened cartridge still sticks in the cartridge chamber with a light friction fit.
  • This invention relates to explosive-actuated bolt-setting guns, for driving anchoring or fastening elements into hard receiving materials such as steel, concrete and the like, and,'
  • the above-mentioned stop is slidably mounted in a rectangular slot or guide for limited displacement parallel to the longitudinal axis of the gun and against the bias of a spring. Due to the fact that the spring is prestressed during pivotal movement of the gun parts, a spring force is available, after mechanical loosening of the spent cartridge from its tight fit, to overcome the remaining light friction fit of the cartridge in the cartridge chamber. Thus, the cartridge is ejected from the cartridge chamber without the necessity either of shaking the gun or of performing other manipulations.
  • An object of the invention is to provide an improved explosive-actuated gun for driving anchoring or fastening elements into hard receiving material.
  • Another object of the invention is to provide such a gun including a novel cartridge-ejecting means.
  • a object of the invention is to provide such a gun including novel means for ejecting a spent cartridge having a tight fit in a cartridge chamber, and for performing such ejection responsive to pivoting of two pivotally interconnected parts of the gun and without further manipulation.
  • Another object of the invention is to provide such a gun in which a stop, cooperable with a spent cartridge-ejection lever, is slidably mounted in an oblong slot or guide for limited displacement parallel to the longitudinal axis of the gun and against the force of the spring.
  • a further object of the invention is to provide such a gun in which the spring is prestressed during pivotal movement of the gun parts to provide an effective spring force capable of over coming the remaining light friction fit of the cartridge in its chamber after mechanical loosening of the cartridge from its tight fit.
  • the bolt setting gun illustrated in the drawing includes a front housing part land a rear housing part 2.
  • the housing part 1 is pivotally mounted on a pivot or journal 3 in the housing part 2, and a barrel 4 is displaceably mounted in housing part 1 and has a slightly conical or frustoconical cartridge chamber 5 and a pivoted spent cartridge-ejecting lever 6.
  • Lever 6 is pivotal about a pin 7, and has one arm 60 engageable beneath the bottom edge or rim 8a of 'a cartridge case 8.
  • the other arm 6b of lever 6, which is biased by a spring 9, can be brought into operative engagement with an end face 11a of a stop 11.
  • the stop 11 which is biased outwardly by a spring 12 and is formed with an oblong slot 13, can be displaced parallel to the gun axis in a guide formation in housing part2. Such displacement can occur until one or the other of the semicircular end edges 13a or 13b of slot 13 bears against journal 3.
  • the illustrated gun operates in a manner which will now be described. After an anchoring element has been driven in, the gun is removed from the target material and the front housing part 1 is turned in the direction of the arrow f. During this rotation, arm 6b of ejecting lever 6 comes into operative engagement with end face Ila of stop 11. Stop 11, biased by spring 12 in the direction of arrow h is pressed, during further rotation of housing part ,1, in a direction opposite to the direction of arrow h until the inner surface 13a of slot 13 en gages journal 3 and spring 12 is compressed to the maximum.
  • an explosive-actuated gun for driving anchoring or fastening elements into hard receiving material such as steel, concrete, and the like, of the type including a first housing part formed with a cartridge chamber arranged to receive a cartridge with a tight fit, a second housing part pivoted to the first housing part at a fulcrum and containing the cartridge detonating mechanism, and a two-arm pivoted lever for ejecting a spent cartridge and having one arm engageable beneath the cartridge rim, the other arm of the lever, upon relative pivoting of the housing parts, cooperating with a stop on the second housing part to pivot the lever: the improvement comprising, in combination, said housing part being formed with a guide slidably receiving said stop for displacement thereof parallel to the gun axis; means limiting such displacement of said stop; and spring means biasing said stop outwardly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Coating Apparatus (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US828878A 1968-06-04 1969-05-29 Explosive actuated gun for driving anchoring or fastening elements into hard receiving material Expired - Lifetime US3556378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681703523 DE1703523C3 (de) 1968-06-04 Kartuschenauswurfeinrichtung an einem pulverkraftbetriebenen Bolzensetzgerät

Publications (1)

Publication Number Publication Date
US3556378A true US3556378A (en) 1971-01-19

Family

ID=5688456

Family Applications (1)

Application Number Title Priority Date Filing Date
US828878A Expired - Lifetime US3556378A (en) 1968-06-04 1969-05-29 Explosive actuated gun for driving anchoring or fastening elements into hard receiving material

Country Status (6)

Country Link
US (1) US3556378A (enrdf_load_stackoverflow)
AT (1) AT291872B (enrdf_load_stackoverflow)
CH (1) CH483911A (enrdf_load_stackoverflow)
FR (1) FR1595403A (enrdf_load_stackoverflow)
GB (1) GB1230251A (enrdf_load_stackoverflow)
SE (1) SE386099B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883062A (en) * 1972-06-07 1975-05-13 Hilti Ag Cartridge ejection device for an explosion driven setting gun
US10118057B2 (en) * 2016-04-29 2018-11-06 Auburn University Fall restraint system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977598A (en) * 1955-11-17 1961-04-04 Omark Industries Inc Stud driving tool
US3046557A (en) * 1954-05-17 1962-07-31 Omark Industries Inc Explosively actuated tool
US3216140A (en) * 1962-05-25 1965-11-09 S O L E F I Sa Tools actuated by means of an explosive charge
US3235154A (en) * 1963-06-28 1966-02-15 Star Expansion Ind Corp Piston tool
US3302840A (en) * 1964-04-27 1967-02-07 Japan Drive It Explosively actuated fastener driving tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046557A (en) * 1954-05-17 1962-07-31 Omark Industries Inc Explosively actuated tool
US2977598A (en) * 1955-11-17 1961-04-04 Omark Industries Inc Stud driving tool
US3216140A (en) * 1962-05-25 1965-11-09 S O L E F I Sa Tools actuated by means of an explosive charge
US3235154A (en) * 1963-06-28 1966-02-15 Star Expansion Ind Corp Piston tool
US3302840A (en) * 1964-04-27 1967-02-07 Japan Drive It Explosively actuated fastener driving tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883062A (en) * 1972-06-07 1975-05-13 Hilti Ag Cartridge ejection device for an explosion driven setting gun
US10118057B2 (en) * 2016-04-29 2018-11-06 Auburn University Fall restraint system
US20190076682A1 (en) * 2016-04-29 2019-03-14 Auburn University Fall restraint system
US10537757B2 (en) * 2016-04-29 2020-01-21 Auburn University Fall restraint system
US10709913B2 (en) * 2016-04-29 2020-07-14 Auburn University Fall restraint system

Also Published As

Publication number Publication date
FR1595403A (enrdf_load_stackoverflow) 1970-06-08
DE1703523A1 (de) 1972-02-24
AT291872B (de) 1971-08-10
SE386099B (sv) 1976-08-02
DE1703523B2 (de) 1976-10-28
GB1230251A (enrdf_load_stackoverflow) 1971-04-28
CH483911A (de) 1970-01-15

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