US3743159A - Cartridge-actuated fastener-driving tools - Google Patents
Cartridge-actuated fastener-driving tools Download PDFInfo
- Publication number
- US3743159A US3743159A US00217563A US3743159DA US3743159A US 3743159 A US3743159 A US 3743159A US 00217563 A US00217563 A US 00217563A US 3743159D A US3743159D A US 3743159DA US 3743159 A US3743159 A US 3743159A
- Authority
- US
- United States
- Prior art keywords
- cartridge
- tool
- magazine
- spring
- casing
- 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
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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
- B25C1/186—Feeding devices for cartridges or pellets
Definitions
- the active member is effectively a spring-loaded tube which is fitted into the hand-grip portion of the tool, normally projects outwardly therefrom to a distance equal to the cartridge spacing along the magazine strip, and through which the magazine is fed.
- the invention is concerned with cartridge-actuated fastener-driving tools comprising a tool casing, a barrel which is axially displaceable in the casing and which carries a plunger which is arranged to be explosively thrust down the barrel to drivingly insert a fastener, a cartridge chamber at the rear end of the barrel on the axis thereof, a breech member mounted in the tool casing adjacent to the cartridge chamber, firing pin means within the breech member and movable relative thereto, a magazine feed channel extending through a hand-grip portion of the tool casing and between the rear end of the barrel and the breech member, the feed channel being arranged to receive a strip-form magazine loaded with cartridges arranged serially in succession along the strip, the magazine being provided with a plurality of detent means spaced along its length at distances equal to the cartridge spacing, and displaceable transfer means engageable with said detent means in order to advance the magazine in step-wise manner through the feed channel.
- the transfer means engaging the detent teeth of the magazine strip is formed as a double-armed pivotable lever which co-operates with the barrel mounted displaceably in the tool casing in such a manner that the barrel must be forced forwards and then drawn back again for each advancement of the magazine strip, this movement also causing a firing pin spring to be compressed.
- this latter tool when a fastener is inserted into the barrel there is the danger that the magazine strip will be moved automatically and unnoticed into the ready-to-fire position and that by an untimely displacement of the firing pin a cartridge could be detohated.
- a cartridge-actuated fastener-driving tool comprising a tool casing, a barrel which is axially displaceable in the casing and which carries a plunger which is arranged to be explosively thrust down the barrel to drivingly insert a fastener, a cartridge chamber at the rear end of the barrel on the axis thereof, a breech member mounted in the tool casing adjacent to the cartridge chamber, firing pin means within the breech member and movable relative thereto, a magazine feed channel extending through a hand-grip portion of the tool casing and between the rear end of the barrel and the breech member, the feed channel being arranged to receive a strip-form magazine loaded with cartridges arranged serially in succession along the strip, the magazine being provided with a plurality of detent means spaced along its length at distances equal to the cartridge spacing, and displaceable transfer means engageable with said detent means in order to advance the magazine in step-wise manner through the feed channel, the transfer means being formed
- step-wise feeding of the cartridge magazine is effected completely independently of the other usual tool functions and with the greatest possible safety directly by a direct actuation of the transfer means.
- the transfer means preferably comprises a sleeve member which is open at each end and surrounds the magazine and which is mounted for limited axial displacement in the lower part of the feed channel, one end of the sleeve member normally projecting outwardly from the hand-grip portion of the tool casing to a distance substantially equal to the feed stroke of the magazine.
- the sleeve member may be arranged to be forced into the hand-grip portion of the tool casing against the action of a spring, with its inner end linked to further spring means which engages with the detent means of the magazine strip.
- the spring engaging the actuating sleeve member is a helical compression spring mounted in the feed channel, the spring being seated at its one end against a shoulder in the feed channel and at its other end being supported at the inner end of the sleeve member.
- the further spring means may be formed as an extension of the compression spring by the latter being bent first radially outwardly and then axially up to and beyond the inner end of the compression spring.
- an additional separate strip spring element may be used as said further spring means which has its outer end clamped between the sleeve member and the helical compression spring.
- FIG. 1 is a vertical longitudinal sectional view through the tool
- FIG. 2 is a cross-sectional view taken along the line ll-Il of FIG. 3;
- FIG. 3 is a top plan view of the tool of FIG. 1, with the right-hand half of the figure showing the tool cut away at the level of the barrel.
- FIG. 1 shows a cartridge-actuated fastenerdriving tool comprising a casing 2 provided with a hand-grip 1 and with a barrel 3 which is mounted for axial displacement within the casing.
- a muzzle-piece 4 is detachably secured to the front end of the barrel 3, for example by means of a bayonet connection.
- a fastener 6, for example in the form of a stud carrying a stabilizing disc or roundel 5, is arranged to fit into the muzzle-piece 4.
- a plunger 7 which serves to drive the fastener 6 into a receiving surface is fitted within the bore 3 of the barrel 3 and at its rear end is enlarged to form a heat 7' which is slidable along the bore of the barrel.
- a cartridge chamber 8 is provided in the rear part of the barrel 3.
- the barrel 3 In its underside the barrel 3 is provided with a longitudinal slot 9 therethrough.
- a detachable arrester bolt 10 extends up through the slot 9 and projects partially into the bore 3 of the barrel 3.
- the bolt 10 may be secured by a screw connection for example.
- a breech ring 11 which has a longitudinal bore 11 therein.
- a firing block 12 provided with a firing pin 12' is fitted within the bore 11 in the breech ring and a spring 13 acts upon one end face of the firing block.
- the firing block 12, as is shown more particularly in FIG. 3, is fitted with a transverse pin 15 which is biased outwardly by a spring 14.
- the transverse pin 15 is mounted for limited displacement in a transverse bore 12" in the firing block 12.
- a slide rail 16 is secured to the rear end of the barrel 3 and is suitably shaped towards its rear end to engage the transverse pin 15.
- the slide rail 16 also forces the pin 15 rearwardly and the firing block 12 is displaced in to its rearward position in which the firing block spring 13 is compressed.
- a slide rod 19 at the rear of the trigger is forced rearwardly and the inclined rear face of the rod 19 strikes against a trip pin 20 provided with corresponding sloping surfaces. Movement of the trip pin 20 causes the transverse pin 15 to be forced inwardly into the bore 12" provided that the tool is pressed firmly against the surface into which the fastener is to be driven, with the result that the firing block 12 is impelled forwards by the release of the compressed spring 13.
- a compression spring 21 engages against the slide rod 19 to bias the trigger 18 into its forward, normal position.
- a feed channel 22 which serves to receive a stripform magazine 24 loaded with cartridges 23 arranged singly in series along its length extends up through the handgrip 1 and between the rear end of the barrel and the breech ring 11.
- the magazine strip 24 is provided, as shown in FIG. 2, with detent means in the form of teeth 24' extending along one or both sides of the strip and with the tooth spacing equal to the cartridge spacing.
- a displaceable transfer device engages with the teeth 24' in order to advance the magazine strip 24 in a stepwise manner.
- This transfer device comprises an actuating sleeve 25 which is open at both ends and which is mounted for limited axial displacement in the lower part of the feed channel 22.
- the outer end 25 of the sleeve 25 projects downwardly from the hand-grip 1 by an amount approximately equal to the displacement stroke of the sleeve.
- the sleeve 25 can be forced inwardly into the hand-grip 1 against the action of a spring 26, and the inner end 27 of a spring element 2'7 which abuts against the inner end 25 of the sleeve engages with the teeth 24' of the magazine strip 24.
- the spring 26 is formed as a helical compression spring which is positioned in the feed channel 22 and which is seated at its one end against a shoulder 22' formed in the feed channel and at its other end against the inner end 25" of the actuating sleeve 25.
- the spring element 27 may be formed as an extension of the compression spring 26, in which case the helical compression spring 26 may be extended at its lower end, first being bent radially outwardly and then being bent back to extend axially beyond the inner end of the spring 26 and finally being angled at its inner end 27' so that it is able to engage behind the radial surfaces 24" of the teeth 24'.
- the spring element 27, as shown, is formed as a separate additional spring element which is bent at its inner end 27' and similarly at its outer end 27" where it is clamped between the sleeve 25 and the spring 26.
- a recess 28 is formed in the sleeve and into the recess projects a check pin 29 secured to the handgrip 1.
- a spring clip 30 projects into the upper end of the feed channel 22 and grips the teeth 24' of the magazine strip 24.
- the spring clip 30, as shown particularly in FIGS. 1 and 3, is fitted into a suitable recess 31 formed in the upper surface of the tool casing 2.
- the method of operation and the manner of use of the tool is as follows. Firstly, the stud 6 or other fastener to be driven into a receiving surface is inserted into the muzzle-piece 4 of the barrel into the position shown in FIG. 1, and then a strip-form cartridge magazine 24 which has been removed from its packing is inserted through the actuating sleeve 25 and into the feed channel 22 in such manner that the trailing end 24" of the strip terminates flush with the outer end 25 of the actuating sleeve 25.
- the first cartridge 23 is brought in an orderly way into its ready-tofire position in front of the firing pin 12.
- the muzzle-piece 4 of the tool is pressed hard against the surface into which the fastener is to be driven, the corresponding rearward displacement of the barrel 3 against the action of the recoil spring 17 forces the cartridge chamber 8 in the rear end of the barrel back over the cartridge 23'.
- the firing block 12 is forced back and the firing spring 13 is compressed.
- actuation of the trigger 18 causes the transverse pin 15 to be forced into its bore and the firing block 12 is impelled forwards to cause detonation of the cartridge 23' and thus an explosive forward movement of the plunger 7.
- the stud 6 is in this way driven into the receiving surface.
- the barrel 3 After the tool is lifted away from the surface into which the fastener has been driven the barrel 3 is thrown forward by a corresponding jerky movement of the tool op'erator. Thus, the empty cartridge case is drawn from the cartridge chamber 8 since the magazine strip 24 is held fast in a T-shaped cross-section groove in the breech ring 11. Finally, the barrel 3 reaches the end of its movement when the end of the slot 9 adjacent to the rear of the barrel strikes against the arrester bolt 10. In this way, the plunger 7 is returned to its initial position in relation to the barrel 3.
- the next stud 6 is then inserted into the muzzle-piece 4.
- the magazine strip 24 is advanced one step corresponding to the cartridge spacing by virtue of the spring element 27 and of its operative inner end 27.
- the end 27 of the spring element engages behind the tooth 24", but on the other hand the spring clip 30 slides over the inclined surface 24" of the tooth and only grips the strip again at the end of the feed stroke when it engages behind the succeeding tooth indicated in FIG. 2 by the reference 24".
- the next cartridge 23" is brought into the ready-to-fire position and can be detonated after the barrel 3 has again been forced back into its rear position.
- a cartridge-actuated fastener-driving tool comprising a tool casing, a barrel which is axially displaceable in the casing and which carries a plunger which is arranged to be explosively thrust down the barrel to drivingly insert a fastener, a cartridge chamber at the rear end of the barrel on the axis thereof, a breech member mounted in the tool casing adjacent to the cartridge chamber, firing pin means within the breech member and movable relative thereto, a magazine feed channel extending through a hand-grip portion of the tool casing and between the rear end of the barrel and the breech member, said feed channel being arranged to receive a strip-form magazine loaded with cartridges arranged serially in succession along the strip, the magazine being provided with a plurality of detent means spaced along its length at distances equal to the cartridge spacing, and displaceable transfer means engageable with said detent means in order to advance the magazine in step-wise manner through the feed channel, said transfer means being formed as a manually actuated member which is alone
- a cartridge-actuated fastener-driving tool as claimed in claim 2 which includes first spring means mounted in the hand-grip portion of the casing and against the force of which the displacement of the sleeve member is effected, and second spring means engageable with said detent means and fixed relative to the other end of the sleeve member within the handgrip portion of the casing.
- said first spring means comprises a helical compression spring mounted in the feed channel and which is seated at its one end against a shoulder in the feed channel and is supported at its other end at the said other end of the sleeve member.
- a cartridge-actuated fastener-driving tool as claimed in claim 1 which includes arrester means secured in the tool casing and projecting through a longitudinal slot in the barrel to limit forward movement of the plunger, said arrester means being arranged to be removable so that it can be replaced by arrester means having a different profile at the end thereof projecting into the track of the plunger in order to provide for variation of the size of the expansion chamber between the cartridge chamber and the head of the plunger.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2101499A DE2101499C3 (de) | 1971-01-14 | 1971-01-14 | Vorschubeinrichtung bei Bolzensetzern für einen Kartuschen tragenden Magazinstreifen |
Publications (1)
Publication Number | Publication Date |
---|---|
US3743159A true US3743159A (en) | 1973-07-03 |
Family
ID=5795811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00217563A Expired - Lifetime US3743159A (en) | 1971-01-14 | 1972-01-13 | Cartridge-actuated fastener-driving tools |
Country Status (8)
Country | Link |
---|---|
US (1) | US3743159A (it) |
AT (1) | AT323671B (it) |
CH (1) | CH541395A (it) |
DE (1) | DE2101499C3 (it) |
FR (1) | FR2122133A5 (it) |
GB (1) | GB1379240A (it) |
IT (1) | IT949366B (it) |
SE (1) | SE401473B (it) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3929269A (en) * | 1974-08-05 | 1975-12-30 | Olin Corp | Powder-actuated tool |
US4114792A (en) * | 1977-07-20 | 1978-09-19 | Omark Industries, Inc. | Powder actuated tool |
US4487353A (en) * | 1981-11-18 | 1984-12-11 | International Telephone And Telegraph Corporation | Powder actuated tool |
US4655380A (en) * | 1983-05-24 | 1987-04-07 | Pneutek, Inc. | Powder-actuated fastener-driving tool |
US4821938A (en) * | 1987-11-25 | 1989-04-18 | Haytayan Harry M | Powder-actuated fastener driving tool |
US5363736A (en) * | 1994-01-05 | 1994-11-15 | Huang Kuang Wu | Semi-automatic anchor shooter |
US5811717A (en) * | 1996-08-21 | 1998-09-22 | Illinois Tool Works Inc. | Powder-actuated tool cartridge clip with position indicator mark |
US6062455A (en) * | 1998-08-06 | 2000-05-16 | Anthony C. Giannuzzi | Cartridge strip magazine for powder-actuated fastener setting tool |
US20030155396A1 (en) * | 2002-02-15 | 2003-08-21 | Tilo Dittrich | Setting tool |
US20040226975A1 (en) * | 2002-12-19 | 2004-11-18 | Thomas Sperrfechter | Combustion - operated working tool, in particular a setting tool for fastening elements |
CN1323809C (zh) * | 2002-09-18 | 2007-07-04 | 伊利诺斯器械工程公司 | 火药驱动的紧固工具 |
CN100400240C (zh) * | 2003-12-22 | 2008-07-09 | 希尔蒂股份公司 | 燃烧力驱动的安装工具 |
US20180001451A1 (en) * | 2016-06-29 | 2018-01-04 | Black & Decker Inc. | Single-motion magazine retention for fastening tools |
US10926385B2 (en) | 2017-02-24 | 2021-02-23 | 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 |
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 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4136932C2 (de) * | 1991-11-11 | 1999-07-22 | Hilti Ag | Kartuschenmagazin |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3554425A (en) * | 1968-09-09 | 1971-01-12 | Hilti Ag | Magazine feeding mechanism for an explosive charge operated setting tool |
US3565313A (en) * | 1967-08-11 | 1971-02-23 | Hilti Ag | Device for driving anchoring members containing a cartridge magazine |
US3670942A (en) * | 1970-10-15 | 1972-06-20 | Omark Industries Inc | Automatic feeding of fasteners |
-
1971
- 1971-01-14 DE DE2101499A patent/DE2101499C3/de not_active Expired
- 1971-12-16 GB GB5849871A patent/GB1379240A/en not_active Expired
- 1971-12-20 CH CH1864871A patent/CH541395A/de not_active IP Right Cessation
- 1971-12-22 AT AT1101571A patent/AT323671B/de not_active IP Right Cessation
- 1971-12-23 FR FR7146283A patent/FR2122133A5/fr not_active Expired
-
1972
- 1972-01-05 IT IT12403/72A patent/IT949366B/it active
- 1972-01-13 US US00217563A patent/US3743159A/en not_active Expired - Lifetime
- 1972-01-14 SE SE7200420A patent/SE401473B/xx unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3565313A (en) * | 1967-08-11 | 1971-02-23 | Hilti Ag | Device for driving anchoring members containing a cartridge magazine |
US3554425A (en) * | 1968-09-09 | 1971-01-12 | Hilti Ag | Magazine feeding mechanism for an explosive charge operated setting tool |
US3670942A (en) * | 1970-10-15 | 1972-06-20 | Omark Industries Inc | Automatic feeding of fasteners |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3929269A (en) * | 1974-08-05 | 1975-12-30 | Olin Corp | Powder-actuated tool |
US4114792A (en) * | 1977-07-20 | 1978-09-19 | Omark Industries, Inc. | Powder actuated tool |
US4487353A (en) * | 1981-11-18 | 1984-12-11 | International Telephone And Telegraph Corporation | Powder actuated tool |
US4655380A (en) * | 1983-05-24 | 1987-04-07 | Pneutek, Inc. | Powder-actuated fastener-driving tool |
US4821938A (en) * | 1987-11-25 | 1989-04-18 | Haytayan Harry M | Powder-actuated fastener driving tool |
US5363736A (en) * | 1994-01-05 | 1994-11-15 | Huang Kuang Wu | Semi-automatic anchor shooter |
US5811717A (en) * | 1996-08-21 | 1998-09-22 | Illinois Tool Works Inc. | Powder-actuated tool cartridge clip with position indicator mark |
US6062455A (en) * | 1998-08-06 | 2000-05-16 | Anthony C. Giannuzzi | Cartridge strip magazine for powder-actuated fastener setting tool |
US20030155396A1 (en) * | 2002-02-15 | 2003-08-21 | Tilo Dittrich | Setting tool |
US6712255B2 (en) * | 2002-02-15 | 2004-03-30 | Hilti Aktiengesellschaft | Setting tool |
CN1323809C (zh) * | 2002-09-18 | 2007-07-04 | 伊利诺斯器械工程公司 | 火药驱动的紧固工具 |
US20040226975A1 (en) * | 2002-12-19 | 2004-11-18 | Thomas Sperrfechter | Combustion - operated working tool, in particular a setting tool for fastening elements |
US7028877B2 (en) * | 2002-12-19 | 2006-04-18 | Hilti Aktiengesellschaft | Combustion—operated working tool, in particular a setting tool for fastening elements |
CN100393480C (zh) * | 2002-12-19 | 2008-06-11 | 希尔蒂股份公司 | 燃烧力推动的用于紧固件的施工工具 |
AU2003271284B2 (en) * | 2002-12-19 | 2008-10-23 | Hilti Aktiengesellschaft | Combustion-operated working tool, in particular a setting tool for fastening elements |
CN100400240C (zh) * | 2003-12-22 | 2008-07-09 | 希尔蒂股份公司 | 燃烧力驱动的安装工具 |
US11325235B2 (en) | 2016-06-28 | 2022-05-10 | Black & Decker, Inc. | Push-on support member for fastening tools |
US20180001451A1 (en) * | 2016-06-29 | 2018-01-04 | Black & Decker Inc. | Single-motion magazine retention 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 |
US10926385B2 (en) | 2017-02-24 | 2021-02-23 | Black & Decker, Inc. | Contact trip having magnetic filter |
Also Published As
Publication number | Publication date |
---|---|
IT949366B (it) | 1973-06-11 |
DE2101499C3 (de) | 1979-07-12 |
SE401473B (sv) | 1978-05-16 |
FR2122133A5 (it) | 1972-08-25 |
DE2101499B2 (de) | 1978-11-09 |
DE2101499A1 (de) | 1972-07-27 |
GB1379240A (en) | 1975-01-02 |
CH541395A (de) | 1973-09-15 |
AT323671B (de) | 1975-07-25 |
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