US3058116A - Apparatus for shooting studs into solid material - Google Patents

Apparatus for shooting studs into solid material Download PDF

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Publication number
US3058116A
US3058116A US755157A US75515758A US3058116A US 3058116 A US3058116 A US 3058116A US 755157 A US755157 A US 755157A US 75515758 A US75515758 A US 75515758A US 3058116 A US3058116 A US 3058116A
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US
United States
Prior art keywords
cartridge
plunger
stud
studs
driving
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
US755157A
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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
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Anstalt fuer Montage Technik
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Publication date
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Publication of US3058116A publication Critical patent/US3058116A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • B25C1/143—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil trigger operated

Definitions

  • This invention relates to shooting devices, e.g. of the powder-actuated type, for driving studs and the like into solid material such as brick Walls, concrete and iron. More particularly, this invention relates to such devices wherein the stud is driven by a guided plunger which in turn is driven by the combustion gases of a cartridge.
  • a stud-driving device that is superior to those provided heretofore. It is a particular object of this invention to provide a powder-actuated stud-driving device which is arranged to operate with reduced contamination of the guides or the plunger by the combustion residues :of the propellant charge.
  • the cartridge is held in a movable support with the cartridge base facing towards the front, i.e. in the driving direction.
  • the pressure exerted by the combustion of the propellant charge exerts a force on the cartridge base so as to drive the plunger and the stud in a forwardly direction.
  • the combustion gases Yof the propellant charge do not enter the barrel of the tool or come in contact with the various guiding surfaces. Instead, these gases enter an expansion chamber provided in the cartridge holder, to the rear of the cartridge, and pass from there into the atmosphere through the handle, which acts as a sound absorber.
  • the movable cartridge holder applies force to the plunger until complete combustion of the propellant charge has been etfected.
  • FIGURE 1 is a longitudinal central section through the tool
  • FIGURE 2 shows a modification of the stud-support- 3,58%,llti Patented ct. 16, 1962 ing portions of the tool, also in longitudinal central section;
  • FIGURE 3 shows a further modification of the studsupporting portions of the tool, also in longitudinal central section;
  • FIGURE 4 is a longitudinal section of the tool shown in FIGURE l, but with the tiring mechanism in fullyactuated position prior to iiring of the cartridge;
  • FIGURE 5 is a cross-section taken along line 5-5 of FIGURE 4, showing details of the bayonet coupling.
  • FIGURE 6 is a cross-section taken along line 6-6 of FIGURE 4 showing details of the friction spring.
  • the tool includes a plunger 2 at the upper end of which is a plunger head 3 carrying a friction spring 4 positioned inV an annular groove of the head, the plunger being supported in a barrel 1.
  • a plunger head 3 Opposite the rear end of the plunger head 3, and at a short distance therefrom to accommodate a tiring pin 39a fastened to the plunger head, is the base 6 ot a cartridge 5 which is supported in a movable cartridge holder 7.
  • the cartridge holder 7 is slidably mounted in the base part S and is movable through the slide region 9 formed by an annular shoulder 10 and a stop 11.
  • the cartridge holder 7 also is provided with openings 12 through which the combustion gases may escape.
  • the upper end of the cartridge holder 7 rests against a locking sleeve 13 which is held in the base part 8 by means of a spring ring 14.
  • a regulator screw 15 which is turnably supported by threads 16 in the locking sleeve 13. Against the front end 17 of this screw, there is pressed the shoulder 18 of a regulator pin 19, the diameter of which behind the cartridge is greater than the caliber of the cartridge.
  • This pin is provided with sealing grooves 20.
  • the base part 8 is tirmly connected with the handle 21, Between the base part and the handle there is a ring-shaped hammer 22 with a firing spring 23.
  • the hammer 22 is formed with a groove 24 which engages a cocking pawl 25.
  • the cocking pawl is supported in such a manner that it can be rotated clockwise about the pivot 26 carried by lever 27, but is prevented from rotating counterclockwise about this pivot by the engagement of stop 28 with an abutment on lever 27.
  • a spring 29 normally holds the stop 28 of the cooking pawl 25 against the lever abutment.
  • the lever 27 is supported by a pivot pin 30 in the handle 21, while the pivot pin 26 in lever 27 extends int-o a slot in a cocking lever 31 to provide driving engagement therebetween.
  • the cocking lever 31 is swingable about a pin 32 which is seated in the handle 21. Between the handle and the cooking lever 31 there is provided a return spring 33 for the cocking lever.
  • the handle also is formed with a gas expansion chamber 34 which communicates with the bore hole 35 of the base part 8.
  • the base part 3 ⁇ and the barrel 1 can be disconnected from each other for loading and unloading by means of a bayonet closure 36.
  • the barrel 1 is turnable in a bearing 37 by an amount which is limited by a projection 38, and is articulated to the handle 21.
  • a stop 39 which, when the tool is pressed against the material into which the stud is to ⁇ be driven, provides 3 a limit to the movement of the firing pin 39a towards the cartridge base 6.
  • a stud-supporting device generally of the construction used for hand tools, i.e. of the type wherein a precisely centered and axially guided -stud is driven by hammer blows on a slidably mounted plunger.
  • the outer tube 41 of this device is axially displaceable on the barrel 1 by means of the projection 42 riding within a slot 43.
  • the inner tube 44 of this device forms a guiding surface for an insert 45 ⁇ the curved rear surface 46 of which is in contact with the plunger Z.
  • the insert 45 has centering surfaces 47 on the side and at the end.
  • a friction ring 48 normally prevents the insert from moving to assure that the stud 49 rests in the insert.
  • a centrally perforated disc Sil is provided.
  • a friction spring 49a extends circumferentially around the outer tube 41 and at one point is formed downwardly through an opening in the outer tube so as to frictionally engage the barrel 1. Thus, this spring holds the outer tube 41 in position on the end of the barrel 1.
  • FIGURE 2 which shows a mo-died form of stud-supporting device affixed to the barrel end, it can be seen that a nail 52 can be driven in by the plunger 2a without the use of an insert.
  • the nail head 51 together with a correspondingly shaped recess on the front end of the plunger 2a forms a rear guide to center the nail 52 While the front guide is a perforated disc 53.
  • FIGURE 3 there is shown a relatively long studsupporting device fastened to the end of the barrel, in order to accommodate a very long stud 54 which is centered by the insert 55 and the perforated disc 56 without having to replace the plunger 2b.
  • the tool is operated by forcing the cooking lever 31 back.
  • the hammer 22 is accordingly moved backward and cocks the firing spring 23 until the tip of the cooking pawl 25 disengages so that the hammer rapidly moves forward.
  • the necessary detonation energy is transferred to the base part 8 which is free to move towards the barrel.
  • the yforce o-f impact is transferred to the cartridge 5 by the cartridge holder '7, so that the base 6 of the cartridge 5 is jammed against the firing pin 39a which extends slightly beyond the rear end surface of the plunger head 3.
  • the cartridge base 6 is pressed by the combus-tion gas pressure against the plunger head 3.
  • the combustion gases expand behind the cartridge to the large diameter of the end surface of the regulating pin 19.
  • the gas pressure active on the cross-section of the regulating pin, also presses the cartridge holder against the plunger head 3 so that the drive of the plunger is effected from the impact base of the cartridge and by the ⁇ differential pressure between the cross-section of the regulating pin 19 and the cross-section of the cartridge caliber.
  • the openings 12 of the cartridge holder are at the same time exposed ⁇ so that the residual gases can blow ont via the bore 35 into the gas chamber 34 of the handle.
  • the impact impar-ted to the cartridge by the residual gases pushes the cartridge case completely out.
  • the handle may be swung downward to permit the empty cartridge case to drop out.
  • the insert 45 is in the front opening in a base ange 5'8 which extends out to a wide diameter and is flattened on one side 57.
  • the stud 49 is placed in the insert 45, the base ange 58 is pressed against the wall, and at the same time the rear part of the apparatus is pushed forward with the right hand until the stud 49 and the plunger 2 form a unit. The tool then is fired.
  • the device has a base ange 58 to prevent tilting, and two guides which are positioned as far as possible away from each other in the axial direction at the commencement of the driving operation so that the shank of the stud (49, 52, 54) freely extends between the guides during the driving operation, the front guide being provided in or adjacent the base flange while the rear guide is formed in such ⁇ a manner that the head of the stud (47, 51) is guided by centering surfaces either of the tool itself or of the plunger (2, 2a) which is guided in the tool.
  • the front guiding is effected in the example shown in FIGURES 1 through 3 by a perforated disc while the ⁇ rear end of the stud is centered in a formlocked manner in FIGURES 1 and 3 by a blunt or conical shoulder, or in FIGURE 2. by a spherical extension on the front end of the plunger.
  • the new apparatus When using perforated discs as front guides for the studs, the new apparatus provides the advantage that these perforated discs actually act as guides and are not destroyed by the combustion ⁇ gases as in prior powder- ⁇ actuated stud-driving tools.
  • Apparatus for driving studs and the like into solid materials comprising tubular guide means, plunger means slidably mounted within said guide means ⁇ for axial movement therein, means ⁇ at the Iforward end of said plunger means to apply -a driving force to a stud, a cartridge holder slidably mounted for axial movement adjacent the rearward end of said plunger means, said cartridge holder being formed at its ⁇ front end to receive a cartridge with its primer base facing said plunger means, firing means on the rear end of said plunger means adapted to be struck by the cartridge base to cause detonation of the cartridge, said guide means having a cross-sectional dimension greater than that of said cartridge holder and forming a clear passage for forward movement of said cartridge holder along with said plunger means after ⁇ detonation of the cartridge has been effected.
  • Apparatus for driving studs and the like into solid materials comprising tubular guide means, first plunger means slidably mounted for axial movement within said guide means, means at the forward end of said first plunger means to apply a driving force to a stud, second plunger means slidably mounted for axial movement adjacent the rearward end of said first plunger means, one of said plunger means being formed to receive a cartridge with its base facing the adjacent end of said other plunger means, firing means at said adjacent end of said other plunger means, said firing means and said cartridge base

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US755157A 1957-08-16 1958-08-15 Apparatus for shooting studs into solid material Expired - Lifetime US3058116A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0027730 1957-08-16

Publications (1)

Publication Number Publication Date
US3058116A true US3058116A (en) 1962-10-16

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ID=6926467

Family Applications (1)

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US755157A Expired - Lifetime US3058116A (en) 1957-08-16 1958-08-15 Apparatus for shooting studs into solid material

Country Status (7)

Country Link
US (1) US3058116A (de)
BE (1) BE570347A (de)
CH (1) CH368107A (de)
DE (1) DE1107610B (de)
FR (1) FR1212137A (de)
GB (1) GB901612A (de)
NL (1) NL101059C (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471074A (en) * 1966-08-02 1969-10-07 Etem Etablissement De Tech Mod Explosively actuated power tool
US3556381A (en) * 1967-07-14 1971-01-19 Etem Ets De Tech Mod Drving-in tool with dismountable joint of the pivoting guide-piece
US4239143A (en) * 1979-05-21 1980-12-16 Olin Corporation Driver assembly for small-diameter fasteners
US5471903A (en) * 1990-12-07 1995-12-05 Dynamit Nobel Aktiengesellschaft Device for igniting a propellant charge, a cartridge for the charge and a magazine for holding cartridges, especially for stud setting or driving tools

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045242A (en) * 1959-12-17 1962-07-24 Adolph John Lester Explosive power activated mechanisms

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE556294A (de) * 1956-06-08
US2030803A (en) * 1931-08-18 1936-02-11 Robert Temple Inc Compressing device
US2632890A (en) * 1949-08-25 1953-03-31 Tietig Chester Nail-driving firearm
US2659273A (en) * 1948-08-16 1953-11-17 John O Blackmon Harpoon
SE149829C1 (de) * 1953-08-21 1955-04-26
US2724116A (en) * 1951-07-12 1955-11-22 Termet Pierre Explosively actuated fastener driving tool
US2761348A (en) * 1952-04-30 1956-09-04 Portable Ind Inc Centering and guiding means for pins, studs, and like fastening elements
DE1000749B (de) * 1955-01-15 1957-01-10 Langensiepen Kg M Vorrichtung zum Eintreiben von Bolzen od. dgl. in einen Bauteil mittels einer Treibladung
US2877750A (en) * 1957-05-29 1959-03-17 Olin Mathieson Hammer and buffer mechanism
US2945236A (en) * 1953-05-14 1960-07-19 Olin Mathieson Explosively actuated tools

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2030803A (en) * 1931-08-18 1936-02-11 Robert Temple Inc Compressing device
US2659273A (en) * 1948-08-16 1953-11-17 John O Blackmon Harpoon
US2632890A (en) * 1949-08-25 1953-03-31 Tietig Chester Nail-driving firearm
US2724116A (en) * 1951-07-12 1955-11-22 Termet Pierre Explosively actuated fastener driving tool
US2761348A (en) * 1952-04-30 1956-09-04 Portable Ind Inc Centering and guiding means for pins, studs, and like fastening elements
US2945236A (en) * 1953-05-14 1960-07-19 Olin Mathieson Explosively actuated tools
SE149829C1 (de) * 1953-08-21 1955-04-26
DE1000749B (de) * 1955-01-15 1957-01-10 Langensiepen Kg M Vorrichtung zum Eintreiben von Bolzen od. dgl. in einen Bauteil mittels einer Treibladung
BE556294A (de) * 1956-06-08
US2877750A (en) * 1957-05-29 1959-03-17 Olin Mathieson Hammer and buffer mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471074A (en) * 1966-08-02 1969-10-07 Etem Etablissement De Tech Mod Explosively actuated power tool
US3556381A (en) * 1967-07-14 1971-01-19 Etem Ets De Tech Mod Drving-in tool with dismountable joint of the pivoting guide-piece
US4239143A (en) * 1979-05-21 1980-12-16 Olin Corporation Driver assembly for small-diameter fasteners
US5471903A (en) * 1990-12-07 1995-12-05 Dynamit Nobel Aktiengesellschaft Device for igniting a propellant charge, a cartridge for the charge and a magazine for holding cartridges, especially for stud setting or driving tools

Also Published As

Publication number Publication date
NL101059C (de)
CH368107A (de) 1963-03-15
GB901612A (en) 1962-07-18
BE570347A (de)
FR1212137A (fr) 1960-03-22
DE1107610B (de) 1961-05-25

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