US3658229A - Stud driving tool - Google Patents

Stud driving tool Download PDF

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Publication number
US3658229A
US3658229A US59519A US3658229DA US3658229A US 3658229 A US3658229 A US 3658229A US 59519 A US59519 A US 59519A US 3658229D A US3658229D A US 3658229DA US 3658229 A US3658229 A US 3658229A
Authority
US
United States
Prior art keywords
ram
driving
igniting
bore
opening
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
US59519A
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English (en)
Inventor
Raymond Visher Pomeroy
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.)
Omark Industries Inc
Phillips Drill Co Inc
Original Assignee
Omark Industries 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
Application filed by Omark Industries Inc filed Critical Omark Industries Inc
Application granted granted Critical
Publication of US3658229A publication Critical patent/US3658229A/en
Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
Assigned to FL INDUSTRIES, INC., A CORP. OF N.J. reassignment FL INDUSTRIES, INC., A CORP. OF N.J. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ITT CORPORATION, 320 PARK AVENUE, NEW YORK, NY 10022, A CORP. OF DE.
Assigned to PHILLIPS DRILL COMPANY, INC., A CORP. OF IN reassignment PHILLIPS DRILL COMPANY, INC., A CORP. OF IN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FL INDUSTRIES, INC.
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
    • B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers
    • 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
    • B25C1/082—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet
    • B25C1/087—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet operated by a hammer blow

Definitions

  • a driving ram is slidable in the bore and adapted to drive a stud held in U-Se I l 1 n a u 1 e l l I l s A s u n s I I 1 e l l [5]] 'f 1/14 rearwardly of the driving ram.
  • Means are provided for in- [58] held of Search ..227/l0 troducing a caseless charge between the driving ram and i it ing ram.
  • Explosively actuated stud driving tools are required to satisfy a number of safety regulations.
  • a system that is widely used for tools, primarily because it is able to readily satisfy the safety regulations, is referred to as Low Velocity Stud Driving System.
  • a driving ram slidably captured in the bored a tool is adapted to strike a stud positioned in the end of the bore thereby driving it out of the boreand into a work surface.
  • An explosive charge is ignited in a chamber behind the ram to produce the driving force.
  • the safety features achieved are first, in containing the explosive completely inside the tool; and second, by the indirect driving of the stud, i.e., the piston and not the stud receives the direct force of the explosive.
  • the explosive charge was comprised of a cartridge type power load and loading the tool required that the tool be taken apart to extract the spent cartridge and to position a new cartridge. This process is cumbersome and objectionable to workers having to juggle the various parts under working conditions far less than ideal.
  • the tool is loaded without taking it apart. It is adapted to use a caseless power load with igniting means that does not require the load to be fixedly positioned in a firing chamber.
  • An igniting ram is slidably positioned in the bore behind the driving ram. With the igniting ram retracted, an opening through the handle permits the placement of a power load between the igniting ram and driving ram. The igniting ram is merely moved toward the driving ram to force the power load against the driving ram. A sharp blow on the igniting ram then ignites the power load for explosively propelling the driving ram.
  • FIG. 1 is a side view of a stud driving tool in accordance with-the present invention
  • FIG. 2 is a cross section taken on section lines 2-2 of FIG.
  • FIG. 3 isan end view of the stud driving tool shown in FIG.
  • FIG. 4 is a view similar to FIG. 2 but illustrating the tool in operation
  • FIG. 6 is a fragmentary view illustrating the stud driving'tool in a more advanced stage of operation as compared to FIG. 4;
  • a stud driving tool 10 includes a base herein called a handle through which a bore 14 is provided.
  • a driving ram 16 is slidable in the bore 14 and an igniting ram 18 is slidable in the bore rearwardly of the driving ram 16.
  • the igniting ram l8 extends rearwardly out of the bandle 12 with an impact knob 20 fixed to the end of the igniting ram- 18 by a holding pin l9.
  • the handle 12 has a main barrel portion 22.
  • a sleeve member 24 surrounds the barrel portion to define there between a chamber 26.
  • Portals 28a and 28b in the barrel 22 connect the chamber 26.with the bore 14.
  • The'rearward end of the barrel portion has a threaded section 32.
  • a retaining nut 34 engages the threaded section 32 of the'barrel portion-to enclose the end of the bore.
  • the retaining nutha an opening 36 that permits the shaft 38 of the igniting ram to slide therethrough but is smaller in diameter than the head portion 40.
  • the igniting ram can slide between two extreme positions but cannot be removed.
  • an opening 42 Forward of the threaded section 32 in the barrel portion is provided an opening 42.
  • Surrounding the barrel portion above the sleeve 24 but adapted to close the opening 42 is a cylindrical shield member 44.
  • the shield member 44 has restricted rotative movement as permitted by the pin 46 fixed to the barrel portion and the slot 48 in the shield.
  • An opening 50in the shield provides access to the opening 42 in the barrel and thus to the bore 14. By rotating the shield the opening 50 is misaligned with the opening 42 to close this access.
  • a spring loaded ball 52 in the retaining nut (loaded through opening 54) produces light friction on the shaft of the igniting ram to prohibit free sliding of the shaft therethrough.
  • the head 40 of the igniting ram has a series of peripherial grooves 56 adjacent its forward end with a sealing ring 58 behind the grooves 56.
  • the end face of the igniting ram is provided with relief areas in the form of radial grooves 60.
  • FIG. 4 illustrates the tool in position to be loaded, i.e., the igniting ram 18 is fully retracted and the shield 44 is rotated to align openings 42 and 50.
  • a nitrocellulose pellet sometimes referred to as a caseless propellent, is inserted through the aligned openings and into the bore 14 between the driving ram and igniting ram.
  • a stud 76 is inserted in the forward end of the bore 14. The head of the stud is adapted to nest in an inset 78 provided in the end ofthe driving ram.
  • a washer 80 around the stud provides for alignment of the stud in the bore. It will be understood that such positioning of the stud in the end of the tool is accomplished with the tool held in various positions.
  • the magnet 74 produces a holding force to maintain the stud in the tool during handling.
  • the end of the tool is placed against the solid work surface as seen in FIG. 4.
  • the igniting ram is then pushed forward to compress or wedge the propellent 84 against the head of the driving ram to force the stud firmly against the work surface 82 asseen in FIG. 6.
  • a hammer is used to strike the impact knob 20.
  • the crushing force produced by the impact causes the propellent to ignite and thereby produce a force that drives the driving ram as seen in FIG. 7.
  • the gases trapped between the igniting ram and driving ram are exhausted through the portals 28a into the chamber 26 and through portals 28b back intothe bore 14 above the head of the igniting ram.
  • the head portions 40 and 68 of the igniting ram and driving ram respectively are designed to accomodate the rapid expansionof gases.
  • the radial grooves on the end faces reduce the area of initial contact and provide recess areas for the propellent material to move into.
  • the depth of the grooves provide an initial expansion chamber to reduce recoil.
  • the pattern and depth of the grooves can be varied to suit conditions, e.g., strength and size of the power load, hardness of the work surface, surface area of end faces, etc.
  • the shield member when rotated to cover the opening 42 acts as a muffler to reduce and protect theuser from the hot blast of the gases from the exploding power load.
  • a tool for driving studs into work surfaces as defined in claim 1 wherein a shield is provided around the barrel over the opening, said shield being rotatable relative to the barrel and said shield having an opening which is aligned with the opening in the barrel at one rotative position of the shield.
  • a tool for driving studs into work surfaces as defined in claim 1 including frictional retaining means for resisting free sliding movement of the ignition ram through the bore.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Percussive Tools And Related Accessories (AREA)
US59519A 1970-07-30 1970-07-30 Stud driving tool Expired - Lifetime US3658229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5951970A 1970-07-30 1970-07-30

Publications (1)

Publication Number Publication Date
US3658229A true US3658229A (en) 1972-04-25

Family

ID=22023488

Family Applications (1)

Application Number Title Priority Date Filing Date
US59519A Expired - Lifetime US3658229A (en) 1970-07-30 1970-07-30 Stud driving tool

Country Status (8)

Country Link
US (1) US3658229A (enrdf_load_stackoverflow)
JP (1) JPS5520834B1 (enrdf_load_stackoverflow)
AU (1) AU3179471A (enrdf_load_stackoverflow)
CA (1) CA930501A (enrdf_load_stackoverflow)
DE (1) DE2138316A1 (enrdf_load_stackoverflow)
GB (1) GB1301760A (enrdf_load_stackoverflow)
IT (1) IT944684B (enrdf_load_stackoverflow)
ZA (1) ZA714673B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4830254A (en) * 1988-01-28 1989-05-16 Hsu Yung Shing Two-stage power driving system for powder actuated tools
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
US20050247751A1 (en) * 2004-05-04 2005-11-10 Wywialowski Bruce F Guidance system for fasteners
US20070170222A1 (en) * 2006-01-26 2007-07-26 Sigma Tool & Machine Pneumatic hand tool for inserting t-nuts
US7410084B1 (en) * 2001-08-31 2008-08-12 Reed Daniel J Multiple-impact adapter for a hammer tool
US8181712B2 (en) 2009-02-20 2012-05-22 Sigma Tool & Machine Nose piece for inserting fixing elements into predefined seats
US20180243889A1 (en) * 2017-02-24 2018-08-30 Black & Decker, Inc. Contact trip having magnetic filter
US10987790B2 (en) 2016-06-30 2021-04-27 Black & Decker Inc. Cordless concrete nailer with improved power take-off mechanism
US11267114B2 (en) 2016-06-29 2022-03-08 Black & Decker, Inc. Single-motion magazine retention for fastening tools
US11279013B2 (en) 2016-06-30 2022-03-22 Black & Decker, Inc. Driver rebound plate for a fastening tool
US11325235B2 (en) 2016-06-28 2022-05-10 Black & Decker, Inc. Push-on support member for fastening tools
US11400572B2 (en) 2016-06-30 2022-08-02 Black & Decker, Inc. Dry-fire bypass for a fastening tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112487A (en) * 1961-02-02 1963-12-03 Fur Montage Technik Anstalt Explosively actuated stud driving apparatus
US3129429A (en) * 1958-02-27 1964-04-21 Fur Montage Technik Anstalt Stud driving tool
US3145387A (en) * 1958-11-27 1964-08-25 Adolph John Lester Explosive power assisted hammer driven tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129429A (en) * 1958-02-27 1964-04-21 Fur Montage Technik Anstalt Stud driving tool
US3145387A (en) * 1958-11-27 1964-08-25 Adolph John Lester Explosive power assisted hammer driven tool
US3112487A (en) * 1961-02-02 1963-12-03 Fur Montage Technik Anstalt Explosively actuated stud driving apparatus

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4830254A (en) * 1988-01-28 1989-05-16 Hsu Yung Shing Two-stage power driving system for powder actuated tools
US7410084B1 (en) * 2001-08-31 2008-08-12 Reed Daniel J Multiple-impact adapter for a hammer 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
US20050247751A1 (en) * 2004-05-04 2005-11-10 Wywialowski Bruce F Guidance system for fasteners
US7971768B2 (en) * 2004-05-04 2011-07-05 Illinois Tool Works Inc. Guidance system for fasteners
US7571844B2 (en) * 2006-01-26 2009-08-11 Sigma Tool & Machine, A Partnership Between Sigma Tool & Machine Ltd. And Sigma Fasteners, Ltd. Pneumatic hand tool for inserting t-nuts
US20070170222A1 (en) * 2006-01-26 2007-07-26 Sigma Tool & Machine Pneumatic hand tool for inserting t-nuts
US8181712B2 (en) 2009-02-20 2012-05-22 Sigma Tool & Machine Nose piece for inserting fixing elements into predefined seats
US11325235B2 (en) 2016-06-28 2022-05-10 Black & Decker, Inc. Push-on support member for fastening tools
US11267114B2 (en) 2016-06-29 2022-03-08 Black & Decker, Inc. Single-motion magazine retention for fastening tools
US10987790B2 (en) 2016-06-30 2021-04-27 Black & Decker Inc. Cordless concrete nailer with improved power take-off mechanism
US11279013B2 (en) 2016-06-30 2022-03-22 Black & Decker, Inc. Driver rebound plate for a fastening tool
US11400572B2 (en) 2016-06-30 2022-08-02 Black & Decker, Inc. Dry-fire bypass for a fastening tool
US20180243889A1 (en) * 2017-02-24 2018-08-30 Black & Decker, Inc. Contact trip having magnetic filter
US10926385B2 (en) * 2017-02-24 2021-02-23 Black & Decker, Inc. Contact trip having magnetic filter

Also Published As

Publication number Publication date
DE2138316A1 (de) 1972-02-03
GB1301760A (enrdf_load_stackoverflow) 1973-01-04
ZA714673B (en) 1972-04-26
IT944684B (it) 1973-04-20
AU3179471A (en) 1973-02-01
CA930501A (en) 1973-07-24
JPS5520834B1 (enrdf_load_stackoverflow) 1980-06-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ITT CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION;REEL/FRAME:004389/0606

Effective date: 19831122

AS Assignment

Owner name: FL INDUSTRIES, INC., 220 SUTH ORANGE AVENUE, LIVIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ITT CORPORATION, 320 PARK AVENUE, NEW YORK, NY 10022, A CORP. OF DE.;REEL/FRAME:004453/0578

Effective date: 19850629

AS Assignment

Owner name: PHILLIPS DRILL COMPANY, INC., A CORP. OF IN,INDIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FL INDUSTRIES, INC.;REEL/FRAME:004842/0480

Effective date: 19880223

Owner name: PHILLIPS DRILL COMPANY, INC., U.S. ROUTE 12, LIBER

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FL INDUSTRIES, INC.;REEL/FRAME:004842/0480

Effective date: 19880223