US3923226A - Barrel and magazine alignment arrangement for a fastening element setting gun - Google Patents

Barrel and magazine alignment arrangement for a fastening element setting gun Download PDF

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Publication number
US3923226A
US3923226A US531443A US53144374A US3923226A US 3923226 A US3923226 A US 3923226A US 531443 A US531443 A US 531443A US 53144374 A US53144374 A US 53144374A US 3923226 A US3923226 A US 3923226A
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US
United States
Prior art keywords
bore
magazine
barrel
chamber
housing
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
US531443A
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English (en)
Inventor
Elmar Maier
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Hilti AG
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Hilti AG
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Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
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Publication of US3923226A publication Critical patent/US3923226A/en
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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
    • B25C1/182—Feeding devices
    • 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

Definitions

  • An explosive charge driven fastening clement setting gun includes a barrel and a rotatable drum-type magazine both axially displaceable within a housing. As the barrel is displaced into the firing position it is arranged to seat into the aligned one of a number of bores in the magazine.
  • a location on each of the axially extending surfaces of the barrel and magazine spaced axially from the location of the other is disposed in clearance-free contact with a surface within the setting gun while the remaining axially extending surfaces of each are spaced radially from the juxtaposed surfaces in the setting gun to provide lateral movement to assure alignment between the barrel and the bores in the magazine when the barrel is moved axially into the firing position.
  • the present invention is directed to an explosive charge driven fastening element setting gun inwhich a barrel and a drum-type magazine are axially displaceable within a housing for movement into the firing condition of the gun and, more specifically, the barrel and magazine are supported within the housing for movement transversely of the axial direction to assure proper alignment when the setting gun is made ready for firing.
  • the bore through which the fastening elements are driven consist of two sections, the one within the magazine and another section in the barrel forwardly from the magazine.
  • At least one of the axially displaceable barrel and magazine is provided with a radial clearance relative to the juxtaposed surfaces of the setting gun in the range adjacent the ends of the barrel and the magazine which interconnect when the gun is placed in the firing condition.
  • the barrel and the magazine areeach provided with a location at which they are disposed in clearance-free contact with the juxtaposed surface of the setting gun.
  • These locations one on the barrel and the other on the drum-type magazine, are spaced apart in the axial direction and also from the point at which the barrel and drum contact when the setting gun is placed in the firing condition.
  • the remaining lateral surfaces of the barrel and the magazine are provided with a radial clearance relative to the juxtaposed surfaces of the setting gun.
  • there is a limited 2 pivotal movement of each of the parts with the locations of clearance-free contact forming fulcrums so that a maximum inclined position of the barrel and magazine, required for the proper alignment of their bore axes, is possible when the setting gun is in the firing condition. It is irrelevant whether the magazine is supported in clearance-free relationship by an axle extending through the center of the magazine or on the surface of the chamber within the gun housing in which the magazine is positioned.
  • Another feature of the invention is the provision of a projection on the rear wall of the chamber containing the magazine so that the projection faces in the firing direction of the setting gun.
  • the drum When the drum is displaced axially into the firing position, its rear end face contacts the projection on the rear wall of the chamber.
  • the projection assures that the magazine, which has its axis inclined in relation to the central axis of the chamber, is not caused to become aligned by contact with the walls of the chamber which alignment would tend to cancel out the provision for the alignment between the bores in the barrel and the magazine.
  • Another characteristic of the invention is the provision of complementary frusto-conical or tapered surfaces on the rear end of the barrel and the forward face of the magazine so that the two can seat together and provide an effective seal.
  • the complementary tapered surfaces aid not only in centering the bores in the barrel and the magazine, but also ensure enlarged sealing surfaces and an effecting sealing joint. With this arrangement, the fouling of the gun by explosive gas residues and the noise level emanating from the gun are considerably reduced.
  • the tapered surface is provided in the bore of the barrel diverging outwardly opposite the firing direction with the complementary tapered surface on the magazine being formed as an outwardly directedsurface arranged to seat within the tapered surface in the barrel bore. Consequently, the tapered surface within the barrel, which has a large sealing surface to provide an optimum sealing effect, cannot be damaged if the barrel must be removed from the gun, for example, for cleaning. In order to protect the tapered sealing surfaces on the drum magazine they are recessed rearwardly from the front face of the magazine so that it is not possible that they are damaged during magazine rotation or removal.
  • FIG. 1 is a side view, partly in section, of a fastening element setting gun in the rest or non-firing position;
  • FIG. 2 is a view similar to FIG. 1 showing the setting gun in the operative or firing position.
  • a fastening element bolt setting gun is shown in the firing position in FIG. 2 and in the non-firing position in FIG. 1.
  • the bolt setting gun includes a 3 housing 1 containing a first bore 2 at its forward or muzzle end containing a barrel 3 which is axially displaceable through the bore between the position shown in FIG. 1 and that indicated in FIG. 2. While there is a radial clearance between the barrel 3 and the surface of the first bore 2 rearwardly of the muzzle end of the gun, the barrel is mounted in clearance-free contact with the inwardly directed shoulder 4 at the muzzle or front end of the first bore 2.
  • the shoulder 4 forms a fulcrum for the barrel 3 and permits its axis to assume an inclined or angular position relative to the axis of the first bore 2.
  • an inner, conically-shaped or tapered surface 5 is provided coaxial with the barrel axis.
  • the tapered surface 5 diverges rearwardly from the diameter of the bore to the rearward force of the barrel.
  • a circumferentially extending groove or recess 6 is provided in the outer surface of the barrel and it is engaged by a stop screw 7 extending into the groove.
  • a compression spring 8 which biases the barrel forwardly into its non-firing position.
  • a cap 11 mounted on the forward end of the housing and extending therefrom in the driving direction by means of a pin 9 for protection against splintering or fragmentation when a fastening element is driven into a target material.
  • the housing 1 forms a chamber 13 rearwardly of the barrel into which a drum-type magazine 12 is positioned.
  • the magazine 12 has a central bore 14 by which it is mounted on an axle 15 supported in the housing.
  • the magazine 12 is arranged to rotate on the axle 15 at a clearance-free bearing surface 16.
  • the bearing surface 16 projects inwardly into contact with the axle 15 while the remainder of the bore 14 is in radially spaced relationship to the axle.
  • Bores 17, 17a are located in the magazine 12 and are disposed in generally parallel relationship to but spaced radially outwardly from the central bore 14 and each of the bores serves to hold a fastening element 18, 18a in its forward end and a cartridge 19, 19a in its rearward end.
  • the magazine bore 17 is not disposed exactly parallel to the axis of the barrel, but due to manufacturing inaccuracies it is disposed at a slight angle to the axis of the central bore 14.
  • the front face of the magazine 12 that is, the face directed toward the forward end of the setting gun, has an extension 21, 21a about each of the outlets from the bores 17, 17a which is concentric to the axis of the bore.
  • the lateral surface of each of the extensions 21, 21a forms an outwardly facing frustro-conical or tapered surface 22, 22a which is complementary to the inwardly directed tapered surface 5 in the rearward end of the barrel bore.
  • the radially inner surface 24 of the front face of the magazine is positioned forwardly of the end faces 23, 23a of the extensions 21, 21a so that the extensions do not become engaged in the housing bore 2 which would tend to hinder the rotation of the magazine 12.
  • a projection 25 is provided on the rear face of the magazine chamber 13 in alignment with the barrel 3 in the forward end of the housing 1. As can be seen more clearly in FIG. 1, the projection 25 extends forwardly from the remaining surface of the rear face within the chamber 13.
  • FIG. 2 illustrates the operative or firing condition of the setting gun.
  • the forward or muzzle end of the barrel is pressed against a target receiving material 29 and, as a result, is displaced rearwardly into the housing 1 against the biasing action of the compression spring 8 and also of the spring 27.
  • the barrel When the barrel is displaced rearwardly, its rearward end enters the chamber 13 and contacts the magazine 12 with the tapered surface 5 within the barrel bore setting against the complementary tapered surface 22 concentrically disposed about the bore 17 in the magazine aligned with the barrel bore. Further, the rearward movement of the barrel presses the drum-type magazine 12 rearwardly until its rearward end surface encircling the rearward end of the bore 17 contacts the projection 25 on the rear face of the chamber 13. It can be noted in FIG.
  • the remaining outer surface of the barrel is spaced radially inwardly from the bore 2 and the remaining surface of the central bore 14 in the magazine 12 is spaced radially outwardly from the axle 15, it is possible to achieve slight angular deviations between the axis of the barrel or the magazine as compared to the axis of the housing bore 2 or the axle 15, respectively.
  • the extent to which the axis of the magazine bore 17 is inclined or angularly displaced relative to the central axis of the magazine determines the degree of angular displacement of the barrel axis with respect to the axis of the housing bore'2.
  • the projection 25 on the rear face of the chamber 13 ensures that the magazine 12 which has its axis disposed angularly to the axis of the chamber 13 is not displaced by contact with the rear face of the chamber so that the alignment of the barrel bore and the magazine bore is not cancelled out.
  • an explosive charge driven fastening element setting gun comprising a housing having a front end facing in the firing direction and a rear end facing in' the opposite direction, said housing having a first bore extending therethrough rearwardly from the front end, a barrel axially displaceably mounted in said bore in said housing, said barrel having a second bore extending therethrough disposed in generally parallel relation with said first bore and said second bore having a forward muzzle end facing in the firing direction of the setting gun and on oppositely facing rearward end, said housing forming a chamber rearwardly of the first bore and disposed in communication with said first bore, said chamber having a central axis disposed in generally parallel relation with and disposed offset to the axis of the first bore in said housing, a drum-type magazine axially displaceably mounted in said chamber and also mounted for rotation about the central axis of said chamber, said magazine having a plurality of angularly spaced third bores therein disposed in generally parallel relation with the central axis of the chamber and each of said third bores being
  • each of said barrel and drum-type magazine has a radial clearance relative to said first bore in said chamber, respectively, and said barrel is supported in clearance-free relation with the surface of said first bore in said housing at a position spaced axially forwardly of the rearward end of said first bore, and said magazine is supported in clearance-free relation with said chamber at a position spaced rearwardly from the front face of said magazine.
  • an axle extends through and generally coaxial with the central axis of said chamber and said axle is supported within said housing
  • said magazine is rotatably mounted on said axle and is positioned thereon for slidable movement in the axial direction
  • said magazine having a fourth bore therethrough extending generally coaxially with said chamber and arranged to receive said axle, the surface of said bore at a position spaced rearwardly from the front end face of said magazine having a radially inwardly directed projection disposed in clearancefree contact with said axle.
  • said chamber has a rear face extending transversely of its central axis and facing in the firing direction of the setting gun toward the rear face of said magazine, a projection formed on the rear face of said chamber extending outwardly therefrom in the firing direction, said projection being aligned with the first bore in said barrel and arranged to contact the rear face of said magazine when it is displaced rearwardly through said chamber.
  • each of said third bores has an axially extending outwardly facing second tapered surface converging in the firing direction of the setting gun and formed complementary to said first tapered surface.
  • said chamber having a forward end face extending transversely of and located at the rearward end of said first bore
  • said front face of said magazine has a portion arranged to contact the forward end face of said chamber and the ends of said second tapered surfaces located closer to the forward end of said barrel are spaced rearwardly from the portion of said front face of said magazine arranged to contact the forward end face of said chamber to permit said drum-type magazine to rotate in said chamber without having the forward ends encircling said second bores becoming engaged within said first bore in said housing.
  • first means are arranged in operative association with said barrel for biasing the barrel in the firing direction and second means are mounted in said housing rearwardly of said chamber for biasing said drum-type magazine in the firing direction.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US531443A 1973-12-13 1974-12-10 Barrel and magazine alignment arrangement for a fastening element setting gun Expired - Lifetime US3923226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2362074A DE2362074C2 (de) 1973-12-13 1973-12-13 Pulverkraftbetriebenes Bolzensetzgerät mit Trommelmagazin

Publications (1)

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US3923226A true US3923226A (en) 1975-12-02

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ID=5900681

Family Applications (1)

Application Number Title Priority Date Filing Date
US531443A Expired - Lifetime US3923226A (en) 1973-12-13 1974-12-10 Barrel and magazine alignment arrangement for a fastening element setting gun

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US (1) US3923226A (enrdf_load_stackoverflow)
JP (1) JPS5091879A (enrdf_load_stackoverflow)
AT (1) AT338188B (enrdf_load_stackoverflow)
CA (1) CA1013597A (enrdf_load_stackoverflow)
CH (1) CH574309A5 (enrdf_load_stackoverflow)
DE (1) DE2362074C2 (enrdf_load_stackoverflow)
FI (1) FI59743C (enrdf_load_stackoverflow)
FR (1) FR2254405B1 (enrdf_load_stackoverflow)
GB (1) GB1477719A (enrdf_load_stackoverflow)
IT (1) IT1022884B (enrdf_load_stackoverflow)
SE (1) SE418263B (enrdf_load_stackoverflow)
ZA (1) ZA747079B (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196833A (en) * 1978-10-10 1980-04-08 Haytayan Harry M Pneumatic tacking tool
US5208420A (en) * 1992-03-13 1993-05-04 Hamilton Brian K Propellant strip assembly
US5799855A (en) * 1996-02-09 1998-09-01 Illinois Tool Works Inc. Velocity control and nosepiece stabilizer system for combustion powered tools
US6010513A (en) * 1997-11-26 2000-01-04 Bionx Implants Oy Device for installing a tissue fastener
US20140021236A1 (en) * 2010-06-25 2014-01-23 Handy & Harman Installation Tool for Universal Fastener
US11359383B2 (en) 2019-04-23 2022-06-14 Omg, Inc. Hidden fastener assembly for attaching grooved deck members
US11873648B2 (en) 2020-03-26 2024-01-16 Omg, Inc. Deck clip

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930041A (en) * 1955-12-22 1960-03-29 Ile D Etude De Procedes De Sce Cartridge operated fastening gun
US3048850A (en) * 1959-03-17 1962-08-14 Arden L Schilling Universal stud driver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930041A (en) * 1955-12-22 1960-03-29 Ile D Etude De Procedes De Sce Cartridge operated fastening gun
US3095572A (en) * 1955-12-22 1963-07-02 Massacrier Jean-Marie Frederic Plugging gun of the repeating type
US3048850A (en) * 1959-03-17 1962-08-14 Arden L Schilling Universal stud driver

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196833A (en) * 1978-10-10 1980-04-08 Haytayan Harry M Pneumatic tacking tool
US5208420A (en) * 1992-03-13 1993-05-04 Hamilton Brian K Propellant strip assembly
US5799855A (en) * 1996-02-09 1998-09-01 Illinois Tool Works Inc. Velocity control and nosepiece stabilizer system for combustion powered tools
US5897043A (en) * 1996-02-09 1999-04-27 Illinois Tool Works Inc. Velocity control and nosepiece stabilizer system for combustion powered tools
US6010513A (en) * 1997-11-26 2000-01-04 Bionx Implants Oy Device for installing a tissue fastener
US20140021236A1 (en) * 2010-06-25 2014-01-23 Handy & Harman Installation Tool for Universal Fastener
US10605288B2 (en) 2010-06-25 2020-03-31 Omg, Inc. Hidden deck fastener
US11359383B2 (en) 2019-04-23 2022-06-14 Omg, Inc. Hidden fastener assembly for attaching grooved deck members
US11873648B2 (en) 2020-03-26 2024-01-16 Omg, Inc. Deck clip

Also Published As

Publication number Publication date
GB1477719A (en) 1977-06-22
CA1013597A (en) 1977-07-12
FI59743C (fi) 1981-10-12
AT338188B (de) 1977-07-25
AU7577374A (en) 1976-05-27
FI59743B (fi) 1981-06-30
FR2254405B1 (enrdf_load_stackoverflow) 1977-03-25
IT1022884B (it) 1978-04-20
SE418263B (sv) 1981-05-18
SE7413618L (enrdf_load_stackoverflow) 1975-06-16
JPS5091879A (enrdf_load_stackoverflow) 1975-07-22
FI319074A7 (enrdf_load_stackoverflow) 1975-06-14
DE2362074A1 (de) 1975-06-19
DE2362074C2 (de) 1983-09-22
CH574309A5 (enrdf_load_stackoverflow) 1976-04-15
ZA747079B (en) 1975-11-26
FR2254405A1 (enrdf_load_stackoverflow) 1975-07-11
ATA827474A (de) 1976-11-15

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