US3802617A - Powered fastener driving tool - Google Patents

Powered fastener driving tool Download PDF

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Publication number
US3802617A
US3802617A US00142202A US14220271A US3802617A US 3802617 A US3802617 A US 3802617A US 00142202 A US00142202 A US 00142202A US 14220271 A US14220271 A US 14220271A US 3802617 A US3802617 A US 3802617A
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US
United States
Prior art keywords
fasteners
frame
fastener
station
tool
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
US00142202A
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English (en)
Inventor
I Berecz
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.)
KAYNAR Manufacturing CO
Original Assignee
KAYNAR Manufacturing CO
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 KAYNAR Manufacturing CO filed Critical KAYNAR Manufacturing CO
Priority to US00142202A priority Critical patent/US3802617A/en
Priority to GB2140072A priority patent/GB1342332A/en
Priority to FR7216826A priority patent/FR2139431A5/fr
Priority to DE19722223399 priority patent/DE2223399A1/de
Priority to JP4352672A priority patent/JPS5517666B1/ja
Application granted granted Critical
Publication of US3802617A publication Critical patent/US3802617A/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
    • B25C1/001—Nail 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure

Definitions

  • NO.I 142,202 This invention relates to a power operated tool for delivering individual male fasteners in a desired position of orientation for drivably inserting each fastener into [52] US. Cl 227/112, 227/118, 227/130 3 receiving member
  • the invention provides a Supply [51] IITL Cl. 825C 1/04 magazine holding a plurality of the fasteners in a [58] held of Search 227M121 ranged order for individual delivery.
  • a transfer mech- 227/147 130 I anism is adapted to transport individual fasteners from x the supply magazine to a driving station, from which it 1 [56] References is drivably inserted into the receiving member.
  • suitable apertures 2,222,125 11/1940 Stehlik 227/147 X may be formed in the receiving member to admit the 2,506,994 5/1950 Chadwick 227/ll2 X fasteners. 2,507,047 5/1950 Perry 227/118 3,622,062 11/1971 Goode, Jr. 227/13 x 10 Clams, Drawmg Flgures ek I 26 22 /a 25 $555.
  • An example of such a structure is a contemporary aircraft which includes thousands of bolted and riveted connections employing male fasteners. Although different sizes of fasteners are used in different applications, depending upon load and fatigue expected in the structure, the fasteners are of uniform size and shape within selected groups. Accordingly, the use of such fasteners has indicated a need forapparatus to deliver and insert individual fasteners into a receiving member, such as a portion of the aircraft frame and/or the metal skin of the wing or fuselage. Therefore, it is an object of the present invention to provide apparatus capable of fulfilling the heretofore recognized need in the assembling of aircraft components.
  • a further object of the invention is to provide a portable power tool capable of carrying a supply of male fasteners and delivering individual fasteners for insertion into a receiving member.
  • a further object of the invention is to provide a tool capable of delivering and inserting discrete male fasteners, the operation of which is powered by separate means for each of the two functions, which are performed sequentially, and the separate means are controlled by correlated control means.
  • FIG. 1 is a view in side elevation of a power operated hand tool embodying my invention, with portions at the left side being broken away and shown in vertical longitudinal section;
  • FIG. 2 is a bottom view of the tool of FIG. 1;
  • FIG. 3 is a front elevational view of the tool of FIG.
  • FIG. 4 is a view in vertical transverse section taken on line 4-4 of FIG. 1;
  • FIG. 5 is a view in vertical transverse section taken on line 5-5 of FIG. 1;
  • FIG. 6 is a vertical transverse section through the supply magazine and showing the chambers therein;
  • FIG. 7 is a fragmentary view in longitudinal vertical section showing a supply tube holding several male fasteners for which one specific embodiment of the invention is adapted to deliver and insert individually;
  • FIG. 8 is a fragmentary view, partly in vertical longitudinal section showingthe control valve of the pneumatic system
  • FIG. 9 is a view in rear elevation. with portions broken away to show air passages in the piston grip of the toolin a plane generally indicated by line 9-9 in FIG. 10;
  • FIG. 10 is a bottom view of the structure of FIG. 8, shown partly in section and schematically illustrating air flow through the several conduits of the pneumatic system.
  • the tool includes a frame generally indicated at 10, and in the embodiment shown is in the form of an external housing enclosing a conventional pneumatically powered reciprocating hammer.
  • a conventional pneumatically powered reciprocating hammer isavailable commercially as a pneumatic impact hammer, the details of which are well known in that art. Accordingly, they are not shown for the sake of brevity, since those details are not the essence of the invention.
  • the frame upends at its rearward end,-at the right as viewed in FIG. 1, into a pistol grip 11 and extends forwardly to provide a forestock 12. A workman is thus permitted two hand maneuvering and operation of the tool so as to take advantage of the low weight and compact dimensions.
  • a hammer 15 is mounted in frame 10 for reciprocal movement along an axis provided by a forward extension of the frame; the axis also serves as an axis of rotation for a supply magazine described below.
  • the harnmer is biased rearwardly relative to frame 10 by spring 16, which also serves as a forward bias for a partially shrouded nosepiece 17.
  • the nosepiece is open at the bottom thereof to define a driving station at the forward end of the tool.
  • a generally cylindrical supply magazine 20 is mounted in the frame for rotation about the longitudinal axis 21 of the magazine.
  • a plurality of chambers 22 are disposed in circumferentially spaced locations about axis 21 and adapted to hold a plurality of male fasteners oriented in head-toe relationship; a pair of such fasteners are shown in the right end of the lower chamber in FIG. 1.
  • Each chamber 22 is generally cylindrical in configuration so that a plurality of fasteners can be stored in each chamber and advanced from right to left, as viewed, under the influence of pressure fluid.
  • vidual chamber with fasteners When open, the gate provides admission to a single chamber then circumferentially positioned in axial alignment with the gate.
  • a discharge chute 17 is secured to provide communication with a single chamber axially aligned therewith, and terminates at a dis hcarge station 28.
  • a transport fork 30 is supported in a curvilinear track 31 formed in forestock l2 for-movement between the discharge station 28 and the driving station adjacent the shrouded nosepiece 17.
  • the fork 30 is provided with a pair of opposed tines of resilient material configured to receive the shank and the underside of the head of the particular male fastener for which this tool is adapted.
  • An operating link 32 connects the transport fork with a pneumatically operated piston/cylinder assembly 33 mounted at the rear of stock 12.
  • a hose connector 40 in the frame is adapted to receive air under pressure from a source of supply, not shown.
  • the connector forms a portion of a control circuit for the tool to admit air to the piston/cylinder as sembly of the transfer fork and to the drive motor for the hammer the air is admitted in sequence to insure operation of the hammer only upon full retraction of the transport fork so as to avoid inadvertent operation of the drive hammer before a fastener is properly positioned at the drive station.
  • the connector 40 communicates with an annular chamber 41 formed by the tubular connector and pistol grip 11.
  • a channel 42 provided in the base of the grip leads to the end of a pressurized supply chamber by means of a conduit 43.
  • the supply chamber so pressurized is indicated as 22?.
  • the air under pressure urges fasteners in the chamber toward the discharge station 28.
  • Air from the source of pressure is also admitted through passage 45a to the control valve spool 45, which is biased upwardly by spring 46.
  • air from connector 40 flows through passage 45a, thence around the annular groove of valve spool 45, through passage 45b, and thence into the head end of into piston/cylinder assembly 33 through a conduit 47.
  • the piston is thereby extended to move the transport fork 30 from the discharge station to the driving station.
  • a valve control trigger through a pivotally mounted cam link 5] permits movement of valve spool 45 downwardly to a position interrupting communication between passage 45a and the annular groove of spool 45, thereby blocking flow to conduit 47 and the head end of piston/cylinder assembly 33. Simultaneously, air flows upwardly through passage 45a and channel 45c through port 45d and passage 45e in communication with channel 52. By way of a conduit 53 leading from channel 52, movement of the valve spool 45 to a downward position will admit air to the rod end of the piston of assembly 33; the route is through valve spool 45, channel 52 in the pistol grip which communicates with conduit 53 connected to the piston cylinder assembly 33 by way of a passage 53a formed in the assembly.
  • a channel formed in the piston rod establishes communication between the source of pressure and the drive motor for hammer 15.
  • a channel 55 is formed in the piston rod and leads from the cylinder through a passage 56a to a conduit 56.
  • the conduit carries air to the base plate of the pistol grip and upwardly through a channel 57 formed therein.
  • Each of the individual chambers 22 are loaded with a supply of male fasteners, such as illustrated in FIG. 7.
  • a sealing tube 60 may be utilized to serve the dual purpose of a shipping container and an hermetic seal around the fasteners carried in the supply magazine 20.
  • the fasteners are pre-oriented to the head-toe positions shown.
  • the workman manipulating the tool then inserts the shank of the fastener into an aperture provided in a receiving member, hot shown.
  • full insertion may not be accomplished by manual force. This is particularly true in the use of interference fits employed in some bolted connections.
  • the power tool of the present invention provides a driving force by admitting air under pressure to the drive motor. This is accomplished by depressing the valve trigger thereby blocking air to the head end of the piston and admitting air to the rod end Retraction of the fork 30 is permitted by reason of the resilie'nt tines relasing the fastener, which has been partially inserted into the receiving member and held by slight manual force.
  • Such force pushes nosepiece 17 to the rear against the biasing spring and thereby stabilizes the tool upon subsequent operation of the drive motor and hammer 15.
  • the reactive force is analagous to that of a handgun type of firearm, in that a vertical upward thrust is imparted to the nose of the tool.
  • Providing a biased nosepiece which requires a manual force to retract imparts stability to the tool and avoids damage to easily marred components, such as aluminum skin in aircraft assembly.
  • the channel 55 in the piston rod establishes communication between the cylinder and the drive motor through conduit 56 and channel 57. It will be seen that no air is supplied to the drive motor until .the transport fork is in a predetermined position, and in the embodiment shown, to a fully retracted position. This insures free movement of the fastener during driving and avoids any interference from the transport fork.
  • Fasteners are successively installed in the receiving member by repetitions of the above procedure.
  • the piston Upon release of the trigger, the piston extends and transports a fastener from the discharge station to the driving station. Subsequent depression of the trigger retracts the piston and sequentially operates the drive motor for so long as is required to fully insert the fastener.
  • the supply magazine is rotated to the next chamber by temporary release of the latch. Upon exhausting the supply carried in the magazine, each of the chambers may be replenished through the loading gate. Accordingly, the present invention provides a hand tool for individual delivery of fasteners in a position of orientation and means for subsequent driving into a receiving member.
  • Apparatus for delivering and inserting discrete male fasteners into a receiving member comprising:
  • a. drive motor means for drivably inserting individual fasteners into a receiving member
  • a supply magazine carried by the frame and adapted to hold a plurality of male fasteners and to deliver individual fasteners at a discharge station;
  • d. means connecting the apparatus to a source of air under pressure (power);
  • first power circuit means (selectively) (actuable) (connectible) to establish communication with said source of (power) air under pressure and (for powering) said transfer motor means thereby to move said transfer means between said discharge station and said driving station;
  • second power circuit means operable responsively to (movement) a predetermined position of said transfer motor means for powering said drive motor means.
  • said supply magazine comprises an elongated cylindrical element mounted in the frame for rotation about its longitudinal axis and provided with a plurality of cylindrical chambers parallel to said axis and arranged in spaced circumferential positions thereabout.
  • said supply magazine comprises an elongated cylindrical element mounted in the frame for rotation about its longitudinal axis and provided with a plurality of cylindrical chambers parallel to said axis and arranged in spaced circumferential positions thereabout, each chamber receiving a sealing tubular element containing the fasteners.
  • a power hand tool for delivering and inserting individual male fastenersinto a receiving member comprising:
  • a drive motor mounted in the frame and having a reciprocable hammer element
  • an elongated cylindrical supply magazine mounted in the frame for rotation about its longitudinal axis and having a plurality of axially extending chambers parallel to said axis and circumferentially spaced therearound, each of said chambers being adapted to receive a plurality of male fasteners and to deliver same individually at a discharge station adjacent one end of themagazine;
  • a transport fork adapted to releasably hold an individual fastener
  • a pneumatic piston-cylinder assembly connected to said fork for powered movement between said sta-.
  • 1 g. means connecting the tool and a source of pneumatic pressure
  • first fluid circuit means to establish communication with the source of pneumatic pressure and the piston-cylinder assembly to operate the same and move the transport fork from the discharge station to the driving station;
  • second fluid means operableresponsively to a predetermined position of said piston and for powering said drive motor.
  • a protective shrouded nosepiece is carried by the frame to partially enclose a fastener held in the driving station, and wherein a biasing spring is provided to urge said nosepiece outwardly thereby to permit application of a force overcoming said spring and to provide stability to the tool during driving of the fastener into a receiving member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
US00142202A 1971-05-11 1971-05-11 Powered fastener driving tool Expired - Lifetime US3802617A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00142202A US3802617A (en) 1971-05-11 1971-05-11 Powered fastener driving tool
GB2140072A GB1342332A (en) 1971-05-11 1972-05-08 Power operated tool
FR7216826A FR2139431A5 (enExample) 1971-05-11 1972-05-10
DE19722223399 DE2223399A1 (de) 1971-05-11 1972-05-10 Kraftbetriebenes Geraet zum Eintreiben von Befestigungsmitteln
JP4352672A JPS5517666B1 (enExample) 1971-05-11 1972-05-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00142202A US3802617A (en) 1971-05-11 1971-05-11 Powered fastener driving tool

Publications (1)

Publication Number Publication Date
US3802617A true US3802617A (en) 1974-04-09

Family

ID=22498962

Family Applications (1)

Application Number Title Priority Date Filing Date
US00142202A Expired - Lifetime US3802617A (en) 1971-05-11 1971-05-11 Powered fastener driving tool

Country Status (5)

Country Link
US (1) US3802617A (enExample)
JP (1) JPS5517666B1 (enExample)
DE (1) DE2223399A1 (enExample)
FR (1) FR2139431A5 (enExample)
GB (1) GB1342332A (enExample)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848322A (en) * 1971-06-21 1974-11-19 Trw Inc Method of attaching a fastener to a support with an air operated gun
US4463889A (en) * 1981-03-30 1984-08-07 The Aro Corporation Special screw feed mechanism for screws, bolts, rivets, nails, etc.
US4662206A (en) * 1984-12-03 1987-05-05 Usm Corporation Rivet/stud feeder
US5577315A (en) * 1990-12-21 1996-11-26 The Boeing Company Method of upsetting rivets
US6145726A (en) * 1998-03-19 2000-11-14 Ejot Verbindungstechnik Gmbh & Co. Kg Device for fitting components
US6655472B1 (en) * 1998-05-16 2003-12-02 Adolf Wuerth Gmbh & Co. Kg Device for producing an abrupt feed motion
US20060069360A1 (en) * 2004-09-29 2006-03-30 Kimberly-Clark Worldwide, Inc. Absorbent article with insult indicators
US20100149743A1 (en) * 2008-12-17 2010-06-17 Mitac Technology Corp. Portable electronic device and camera module thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222125A (en) * 1940-03-19 1940-11-19 Rudolph J Stehlik Nail driver
US2506994A (en) * 1944-08-21 1950-05-09 Douglas Aircraft Co Inc Pneumatically operated rivet feed
US2507047A (en) * 1944-05-02 1950-05-09 Douglas Aircraft Co Inc Rivet feeding attachment
US3622062A (en) * 1970-03-02 1971-11-23 Spotnails Fastener-driving apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222125A (en) * 1940-03-19 1940-11-19 Rudolph J Stehlik Nail driver
US2507047A (en) * 1944-05-02 1950-05-09 Douglas Aircraft Co Inc Rivet feeding attachment
US2506994A (en) * 1944-08-21 1950-05-09 Douglas Aircraft Co Inc Pneumatically operated rivet feed
US3622062A (en) * 1970-03-02 1971-11-23 Spotnails Fastener-driving apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848322A (en) * 1971-06-21 1974-11-19 Trw Inc Method of attaching a fastener to a support with an air operated gun
US4463889A (en) * 1981-03-30 1984-08-07 The Aro Corporation Special screw feed mechanism for screws, bolts, rivets, nails, etc.
US4662206A (en) * 1984-12-03 1987-05-05 Usm Corporation Rivet/stud feeder
US5577315A (en) * 1990-12-21 1996-11-26 The Boeing Company Method of upsetting rivets
US5621963A (en) * 1990-12-21 1997-04-22 The Boeing Company Differential capacitance in an electromagnetic riveter
US5685058A (en) * 1990-12-21 1997-11-11 The Boeing Company Method for direct insertion of a headed rivet into a countersunk hole
US5752306A (en) * 1990-12-21 1998-05-19 The Boeing Company Method for upsetting a headed rivet by differential initiation of opposed electromagnetic rivet drivers
US6145726A (en) * 1998-03-19 2000-11-14 Ejot Verbindungstechnik Gmbh & Co. Kg Device for fitting components
US6655472B1 (en) * 1998-05-16 2003-12-02 Adolf Wuerth Gmbh & Co. Kg Device for producing an abrupt feed motion
US20060069360A1 (en) * 2004-09-29 2006-03-30 Kimberly-Clark Worldwide, Inc. Absorbent article with insult indicators
US20100149743A1 (en) * 2008-12-17 2010-06-17 Mitac Technology Corp. Portable electronic device and camera module thereof

Also Published As

Publication number Publication date
DE2223399A1 (de) 1972-11-30
GB1342332A (en) 1974-01-03
JPS5517666B1 (enExample) 1980-05-13
FR2139431A5 (enExample) 1973-01-05

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