US3471074A - Explosively actuated power tool - Google Patents

Explosively actuated power tool Download PDF

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Publication number
US3471074A
US3471074A US603327A US3471074DA US3471074A US 3471074 A US3471074 A US 3471074A US 603327 A US603327 A US 603327A US 3471074D A US3471074D A US 3471074DA US 3471074 A US3471074 A US 3471074A
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US
United States
Prior art keywords
tool
barrel
piston rod
cartridge
sleeve
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
US603327A
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English (en)
Inventor
Claude Rosselet
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.)
ETEM ETABLIS DE TECHNIQUES MODERNES
ETEM DE TECH MOD Ets
Original Assignee
ETEM DE TECH MOD Ets
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 ETEM DE TECH MOD Ets filed Critical ETEM DE TECH MOD Ets
Application granted granted Critical
Publication of US3471074A publication Critical patent/US3471074A/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

Definitions

  • the present invention relates to explosively actuated power tools. More particularly, it relates to power actuated apparatus for driving 'a fastening member of the class of plugs, bolts, points and other similar devices, into hard and compact material such as wood, cement, concrete, etc., by the action of a piston rod subjected to the thrust produced by the explosion of an explosive charge.
  • a further object of the invention is to provide an explosively actuated driving tool adapted to cooperate with a fastening member so as to facilitate introduction vof the fastening member, ejection of a spent cartridge, and loading the tool.
  • FIG. 1 is a longitudinal section of a tool embodying the invention.
  • FIG. 2 is a plan view of a portion of the manipulating sleeve land taken at a right angle to the position of this sleeve in IFIG. 1.
  • FIG. 3 is a sectional view taken on the line III-Ill of FIG. 1.
  • FIG. 4 is an axial sectional view similar to FIG. 1 showing the position of the parts upon completion of the power stroke.
  • FIG. 5 in the left portion is a partial sectional view showing the hinged position of front part A relative to the rear part B and the portion shown at the right of the broken zone is Ian axial sectional view showing the elements rotated about the axis of tool ninety degrees from these elements as they appear in FIG. 1.
  • FIG. 6 is an axial sectional view showing the positions of the elements for ejection of a cartridge.
  • the device is formed of two principal parts, namely 'a front part A connected to a rear part B.
  • the rear part comprises a breech 1 to which is rigidly fixed a grip 2, provided with a trigger 3 intended toactuate a percussion mechanism contained in the breech 1 and of which the firing pin 4 is seen in FIG. 4.
  • a fork 5 is mounted on the breech 1 for limited sliding movement subject to the thrust of a safety spring 6 tending normally to maintain the cartridge C, out of reach of the aforesaid ring pin, as long las the front part A 3,471,074 Patented Oct. 7, 1969 of the tool is not thrust back towards the part B, by the application of the front end of the tool against the material in which the fastening member is to be driven.
  • a barrel block 7 between branches 5a of this fork (FIG. 6).
  • the barrel block 7 has 'an axial bore 8 of which the rear end opens into a loading chamber 9 intended to contain the cartridge C which, when the tool is ready for firing (FIG. 1), is locked in this chamber by the bridge 5b Iwhich connects the two vbranches 5w of the fork 5.
  • the barrel block 7 is extended by a cylindrical sleeve 7a forming one of the connecting members between the rear part B and the front part A of the tool.
  • the front part A includes la guide piece 10 rigidly xed to a tubular housing 10a which plays a triple role. It serves as a connecting member with the rear part B, as an expansion chamber for the propulsive gases arising from the explosive charge contained in the cartridge C, 'and as cylindrical guide for the middle part 11a of a piston rod 11.
  • the pisotn rod has a rear part 11b guided in the bore 8 of the block 7, and a front part 11C guided in the posterior bore 12 of the guide piece 10. The expanding gases escape through ceremoniess 10b.
  • the guide piece 10 has in addition, beyond the posterior bore 12, an anterior bore 13 in which is guided a sliding and tilting barrel 14.
  • the front end of the barrel 14 carries lan annular flange 15.
  • the barrel 14 is mounted removably (for example by a pin 16) in a barrel holder 17 furnished with hinge pins 18. These pins extend respectively into stud holes 19 diametrically opposite one another and arranged in the front end of a manipulating sleeve 20 able to slide on the elements 7a and 10a.
  • the holes 19 ' are elongated as shown in FIG. 2 to accommodate a stroke for ejecting a spent cartridge C.
  • the barrel holder 17 carries a positioning plate 21 arranged to be in contact (when the barrel 14 is -aligned with the axis of the tool) with the edges 20a of one of the two arms on the manipulating sleeve 20.
  • the piston rod carries Ia damper 22 intended to absorb the impact at the end of the travel of the piston rod upon the guide piece 10.
  • the recoil of the movable members with respect to the breech 1 is absorbed by a rear damper member 23 sliding in the breech, against the 'action of the safety spring 6.
  • the damper member at the end of the back travel abuts -against a shoulder 1a of the breech.
  • the damper member 23 cooperates with the fork 5 by the intermediary of a spring 24 working in compression.
  • the barrel 14 and the bore 13 formed in the guide piece 10 are arranged in order that the tool can re plugs T (FIG. 5) of a well-known type.
  • the head of the plug is furnished with a guiding portion G and an annular ange Ta at the rear end.
  • the barrel 14 is made to pivot in such a way that its rear end is ⁇ accessible as shown in FIG. 5. After the plug is inserted in the bore 13 the plug is kept at this end of the barrel by its flange Ta.
  • a cartridge may be inserted in the chamber 9. If the chamber 9 is still occupied by spent cartridge the barrel 14 is hinged into alignment with the axis of the guide piece 10. The sleeve 20 is then moved towards the rear, which inserts the barrel 14 in the bore 13 of the guide piece 10.
  • the ange Ta prevents the plug from penetrating into the barrel 14, which makes the plug behave like a pusher with respect to the piston rod 11.
  • the piston rod is thus urged rearwardly by such movement of the sleeve 20.
  • At the end of the travel of this rearward movement of the sleeve thrust applied to the annular flange 15 produces a rearward movement of the piston rod and its lCe rear end penetrates slightly into the loading chamber 9 and causes the ejection of the spent cartridge.
  • a fresh cartridge may be inserted in the loading chamber 9 ⁇ and the parts hinged to bring them into alignment as shown in FIG. l.
  • the front surface of the bridge b urges the cartridge into proper seating ⁇ and serves as a breech plug for the loading chamber.
  • the seating of the cartridge C serves to push the piston forwardly slightly. The tool is then ready for the fastening operation.
  • the tool is applied against the material M, at the point where the plug is to be driven and the front end of the apparatus is pressed rmly against the material M.
  • the spring 6 allows a Slight rearward movement of the movable members of the tool with respect to the breech 1 to reduce to zero the Safety gap between the firing pin 4 and the cartridge C.
  • Manipulation of the trigger 3 then causes the explosion of the charge and the piston rod 11 is moved forward overcoming the resistance of the ange Ta. This ange shears and the piston rod thrusts the plug T, with sufficient energy to embed it into the material M.
  • An explosively actuated driving tool comprising a stock provided with a firing mechanism and trigger means, a connecting member attached to said stock and provided with an axial channel with a loading chamber arranged at the stock end of said member and intended to receive a cartridge, a guide piece connected to said connecting member ⁇ and having at least one longitudinal bore and a coaxial cylindrical passage, a sliding piston rod having two cylindrical parts between which is sittlated an intermediate part of greater diameter than said cylindrical parts, said intermediate part being guided in said bore, so that one of said cylindrical parts can penetrate into said axial channel of the connecting member, a manipulating sleeve having one end slidably mounted on said guide piece and a free end, a guide barrel adapted to receive a fastening member and the other cylindrical part of the piston rod, said guide barrel having one end hinged on said free end of the manipulating sleeve so that its other end can be brought, either into alignment with the axis of said guide piece to permit cooperation between the piston rod and the fastening member or, out of alignment, so
  • a tool according to claim 1 in which the free end of the manipulating sleeve has on diametrically opposite sides, a pair of orifices elongated in the longitudinal direction of the sleeve, to receive the hinge of the guide barrel, in order that the said .guide barrel can slide longitudinally with respect to the manipulating sleeve.
  • a tool according to claim 1 in which the travel of the manipulating sleeve on the guide piece and the length of the piston rod are such that, when the guide barrel is aligned With the axis of the guide piece and when the manipulating sleeve is urged back in the direction of the stock, the piston rod is thrust back by the fastening member gripped in the guide barrel so as to eject the cartridge seated in the loading chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Slide Fasteners (AREA)
US603327A 1966-08-02 1966-12-20 Explosively actuated power tool Expired - Lifetime US3471074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1112166A CH439170A (fr) 1966-08-02 1966-08-02 Pistolet de scellement à masselotte

Publications (1)

Publication Number Publication Date
US3471074A true US3471074A (en) 1969-10-07

Family

ID=4370289

Family Applications (1)

Application Number Title Priority Date Filing Date
US603327A Expired - Lifetime US3471074A (en) 1966-08-02 1966-12-20 Explosively actuated power tool

Country Status (9)

Country Link
US (1) US3471074A (nl)
BE (1) BE701311A (nl)
CH (1) CH439170A (nl)
DK (1) DK135444B (nl)
ES (1) ES343632A1 (nl)
GB (1) GB1175463A (nl)
NL (1) NL148526B (nl)
NO (1) NO117909B (nl)
SE (1) SE318835B (nl)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556381A (en) * 1967-07-14 1971-01-19 Etem Ets De Tech Mod Drving-in tool with dismountable joint of the pivoting guide-piece
US3804315A (en) * 1972-06-02 1974-04-16 Omark Industries Inc Powder actuated tool
US4210267A (en) * 1977-11-23 1980-07-01 Societe de Prospection et d'Inventions Techniques, S.P.I.T. Rear-loading powder-acetuated tool
US4349141A (en) * 1980-06-12 1982-09-14 Olin Corporation Piston return for powder actuated piston tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044071A (en) * 1960-04-06 1962-07-17 Behrend Herbert Explosive actuated tool
US3058116A (en) * 1957-08-16 1962-10-16 Fur Montage Technik Anstalt Apparatus for shooting studs into solid material
DE1152370B (de) * 1960-08-05 1963-08-01 Dr Georg Groetsch Bolzensetzgeraet
US3239121A (en) * 1963-01-11 1966-03-08 Omark Industries Inc Piston powder actuated tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058116A (en) * 1957-08-16 1962-10-16 Fur Montage Technik Anstalt Apparatus for shooting studs into solid material
US3044071A (en) * 1960-04-06 1962-07-17 Behrend Herbert Explosive actuated tool
DE1152370B (de) * 1960-08-05 1963-08-01 Dr Georg Groetsch Bolzensetzgeraet
US3239121A (en) * 1963-01-11 1966-03-08 Omark Industries Inc Piston powder actuated tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556381A (en) * 1967-07-14 1971-01-19 Etem Ets De Tech Mod Drving-in tool with dismountable joint of the pivoting guide-piece
US3804315A (en) * 1972-06-02 1974-04-16 Omark Industries Inc Powder actuated tool
US4210267A (en) * 1977-11-23 1980-07-01 Societe de Prospection et d'Inventions Techniques, S.P.I.T. Rear-loading powder-acetuated tool
US4349141A (en) * 1980-06-12 1982-09-14 Olin Corporation Piston return for powder actuated piston tool

Also Published As

Publication number Publication date
DE1603774A1 (de) 1971-07-08
NO117909B (nl) 1969-10-06
BE701311A (nl) 1967-12-18
DK135444C (nl) 1977-10-17
SE318835B (nl) 1969-12-15
ES343632A1 (es) 1968-09-01
NL148526B (nl) 1976-02-16
CH439170A (fr) 1967-06-30
DE1603774B2 (de) 1972-11-09
GB1175463A (en) 1969-12-23
DK135444B (da) 1977-05-02
NL6710604A (nl) 1968-02-05

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