US3923228A - Multiple shot fastening gun - Google Patents

Multiple shot fastening gun Download PDF

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Publication number
US3923228A
US3923228A US493169A US49316974A US3923228A US 3923228 A US3923228 A US 3923228A US 493169 A US493169 A US 493169A US 49316974 A US49316974 A US 49316974A US 3923228 A US3923228 A US 3923228A
Authority
US
United States
Prior art keywords
driving
fastening element
blade
ram
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
US493169A
Other languages
English (en)
Inventor
Martin Leff
Paul Olesen
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.)
Acco Brands USA LLC
Original Assignee
Swingline Inc
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 Swingline Inc filed Critical Swingline Inc
Priority to US493169A priority Critical patent/US3923228A/en
Priority to DE2529110A priority patent/DE2529110C3/de
Priority to GB29026/75A priority patent/GB1516873A/en
Priority to JP50086256A priority patent/JPS5148872A/ja
Priority to FR7523648A priority patent/FR2280478A1/fr
Application granted granted Critical
Publication of US3923228A publication Critical patent/US3923228A/en
Assigned to ACCO USA, INC., A DE CORP. reassignment ACCO USA, INC., A DE CORP. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE ON 12/19/1991 Assignors: SWINGLINE INC., A DE CORP.
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
    • B25C1/02—Hand-held nailing tools; Nail feeding devices operated by manual power

Definitions

  • No.: 493,169 comprises a driving means including spring-loaded ram means movable through a series of arming strokes and firing shots to drive the fastener into the work [2?] piece
  • the tool is Constructed to accomplish at least 132 two driving shots for each fastener using a ram having I I 0 care multiple driving surfaces which are positioned by the fastening element and by cam arrangements to accom- [56] UNITE g S :?;S g:3rENTS plish at least two driving shots. 3,758,016 9 1973 Olney ct al. 227 132 3 Claims 13 Drawing Figures -U.S. Patent M21975 sheetlofs 3,923,228
  • the gun of the present invention includes a mechanism permitting the gun to be loaded and fired to provide for two or more driving shots by the hammer element. This improvement permits fastening to be accomplished where greater driving forces and energies are required.
  • FIG. 1- is a side elevational viewof the gun; and FIG. 1A is a front elevational view of the gun;
  • FIG. 2' is a sectioned side elevationalview of the gun with handle raised; and FIG. 2A is a sectioned front elevational view of the gun in that position;
  • FIG. 3 is a sectioned elevational view with handle lowered during arming of the firing mechanism; and FIG. 3A is a front elevational view of the gun in that position;
  • FIG. 4 and 4A show the gun after completion of the first driving stroke
  • FIG. 5 is a front view showing the ram raised for the second stroke
  • FIG. 6 shows the ram descending during the second stroke
  • FIG. 7 shows the nail after driving is complete
  • FIG. 8 shows a group of nails lined up forfeeding by the magazine to the driving station.
  • FIG. 9 shows the spring which urges the driver blade in a clockwise manner.
  • a fastening element driving tool constructed according to the present invention comprises a frame indicated generally by reference numeral 10.
  • the frame 10 which includes a gripping handle 3 as shown, supports a housing for the operating components of the tool.
  • the housing includes magazine 1 and sheath 2.
  • a cover 4 for magazine 1 is pivotally secured to the rear end of the frame by hinge pin 5.
  • the cover 4 is swingable, upon release of cover latch 6, about hinge pin 5 to expose, for purposes of loading, the magazine-type fastening element feeding means contained within magazine.
  • This feeding means is operable to successively feed individual fastening elements one at a time to the driving station of the tool which is indicated generally be reference numeral 7.
  • Sheath 2 houses the component parts of a selectively operable fastening element driving means which, upon activation, acts to drive a waiting fastening element situated at the driving station out of the tool and into a work piece.
  • the forwardend portion 8 of the frame supports a specially constructed actuating means for operating the driving means.
  • the actuating means includes, as shown in FIGS. land 2, an actuator arm 9 pivotally connected to frame 10 by hinge pin 11 and spring biased toward its open position (FIG. 2) by arm 22a of torsion spring 22 as shownin FIG. 3.
  • the actuatingmeans further includes a specially constructed linkage means responsive to the actuator trigger which acts to cockand fire the driving means.
  • the linkage means will also be described more fully below.
  • arm 9 carries at its forward end a hand guard 12 which is also mountdon hinge pin 11 and fixed in place relative to arm 9 by rivet means as indicated in FIG. 2.
  • Trigger latch 13 pivotally secured to the forward end 8 of gripping handle 3 by hinge pin 14 is provided.
  • Trigger latch 13 is provided with a thumb rest 15 for the purpose of permitting convenient rotation thereof to thereby permit pivotal movement of arm 9 to its open or unlocked position.
  • Trigger latch 13 is held securely in its locked position with its locking surface 18 engaging locking surface 17 of trigger 9 by force of engagement between these locking surfaces created by arm 22a of torsion spring 22 biasing the trigger 9 toward its open position.
  • Trigger 9 is safely prevented from flying accidently into open position when the tool is not being used.
  • the driving means contained within housing sheath 2 includes an elongated hollow ram member 25 which is mounted for selective cyclical movement between two longitudinally spaced apart positions within sheath 2 for each driving shot.
  • ram 25 is situated in the lower portion of sheath 2 as shown in FIG. 2 and 2A.
  • ram 25 is situated in the upper portion of sheath 2 as shown in FIG. 3.
  • Each cycle includes ram movement from its initial rest position shown in FIG. 2 upward to the firing position shown in FIG.
  • Rearwardly facing wall 250 of ram 25 is equipped with a shearformed lifting lug 25d which moves within thru-slotway 39 formed in the rear wall 2d of sheath 2 during the upstroke and downstroke of the ram.
  • driver blade 26 Connected to the ram 25 for movement therewith is a driver blade 26.
  • the driver blade 26 is secured to ram 25 by spaced shearformed lugs 27 which are received in spaced openings 28 in driver blade 26.
  • Blade 26 is capable of swinging or pivoting in relation to ram 25 about axes parallel to the longitudinal axis of the row of nails to be driven (FIG. 8).
  • the driver blade 26 has two driving surfaces, one notched surface 30 is formed at the base of tongue 29 and the other is surface 290 formed on the flat end of tongue 29. During the first downstroke or shot surface 30 is brought into contact with the head 30a of a nail 30b to be driven (FIG. 3A).
  • the driver blade 26 and connected ram 25 are guided within sheath 2 by a slide-way defined by shearformed guide detents 31 projecting inwardly from the front wall 2a of sheath 2 on opposite sides of driver blade 26 as best shown in FIG. 2A.
  • the blade 26 is further guided by lip 33, sheath protrusion 34, by nail 30b and by surfaces 35 and 36 to accomplish driving the nail during the first and second shots.
  • the position of the fastener determines which blade driving surface, 29a or 30, will be guided against the end of the fastner to drive the fastener into the work piece.
  • a composite compression spring 32 is provided for the purpose of enabling ram 25 and driver blade 26 to undergo downward movement with sufficient force to drive nail 30b out of the tool with sufficient force to move it a distance down into a work piece. As shown, this spring is disposed withinbore 25a of ram 25 with one of its ends resting on the bottom plate 25b of ram 25 and with its other end abutting the top plate 2b of sheath 2. An inwardly protruding boss 20 is carried by the top plate 2b of sheath 2 for the purpose of retaining spring 32 aligned in bore 25a of ram 25. With this construction, it will be recognized that the ram 25 and thus driver blade 26 are biased toward the driving station 7 of the tool.
  • the actuating means comprises trigger 9 and a linkage means operatively connected between ram 25 and trigger 9.
  • the linkage means comprises a ram lifter member 42, a pivotally mounted lever link 40 and a special cam-cam follower means.
  • the link 40 is pivotally mounted at a point approximately midway along its.length on stationary link pin 41 to define two arms 40a and 40b situated on either side of link pin 41.
  • the ram lifter 42 pivotally mounted on the forward end of lever arm 40a for movement therewith by pin 43.
  • Linkage 50 connects trigger 9 and link 40. As shown one arm of spring 22 engages the latch 6 for cover 4 and the other arm engages the plate 51. Spring 22 is therefore operative to bias the cover latch 6 in the locked position shown in FIG. 1 and to urge rotation of link 40 about pin 41 in a counter clockwise direction (as viewed in the drawings) thus moving trigger 9 into the open position and ram lifter 42 into a position adjacent ram stop 47 and buffer 47a.
  • One arm of spring 23 engages cam plate 51 and the other arm engages lifter plate 42a on ram lifter 42. With this arrangement the ram lifter plate is urged into engagement with the lifting lug on the ram. Spring 23 insures that this engagement is maintained during the upstroke or arming stroke of the ram until such time as these two members are disengaged by the coaction of cam surface 42b of ram lifter 42 with the trigger hinge pin 11 (FIG. 3).
  • the trigger latch 13 is depressed as previously described freeing the trigger 9 which will be automatically moved to the open position shown in FIG. 2 by the action of arm 22a of spring 22.
  • the various component parts of the linkage means assume the postion shown in FIG. 2 wherein it will be noted that the ram lifting plate 42a on ram lifter 42 is disposed in contact with rarn lifting lug 25d and ram 25 which is in its lowermost position resting against the shock absorbing buffer pad 47a supported by ram stop 47.
  • the operator depresses trigger 9 to move it toward its closed position adjacent gripping portion 3 of the frame. This movement causes movement of linkage 50 to in turn pivot link 40 in a clockwise direction (as viewed in FIG.
  • the lower portion of the blade 26 is able to swing to the left as lip 33 and sheath protrusion 34 disengage since the upper part of the nail is not in a position to engage tongue side 36 to prevent such swinging movement.
  • the blade 26 is biased in a clockwise direction by spring 37 (FIG. 9) which has end 46 engaging the edge of the blade.
  • spring 37 FIG. 9
  • tongue 29 is caused to strike and thereby finish driving the nail in the second and final stroke.
  • the magazine delivers to the driving station the next nail in the strip.
  • the driving operation is then ready to be repeated.
  • a tool for driving a fastening element into a work piece comprising:
  • magazine means mounted on the frame for feeding sequentially a plurality of fastening elementsto a driving station
  • spring loaded ram means mounted in the housing on the frame for movement through multiple arming strokes against the force of the spring in a direction away from the driving station and through successive firing shots back toward the driving station under the force of the spring into driving contact with a waiting fastening element situated at the driving station;
  • movable means engageable with the ram means for advancing the ram means through the arming stroke
  • release means for effecting disengagement between the ram means and the movable means upon completion of the arming stroke
  • driving blade means having at least two fastening element driving surfaces said blade means being pivotably attached to the ram means;
  • guide means associated with said housing engageable with the driving blade means to guide the first of said driving surfaces against the fastening element to complete a first driving shot driving the fastening element through a hole in the stapler housing and to guide the second of said blade surfaces against the fastening element in a successive driving shot to thereby drive the fastening element further into a work piece.
  • the driving blade includes a tongue engageable with the fastening element to be driven to guide the first blade driving surface positioned adjacent the upper part of the tongue into contact with the fastening element and in which the second driving element surface is below the first driving surface so that the fastening element is driven further in the work during the second stroke of the blade.
  • said guide means comprises:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US493169A 1974-07-30 1974-07-30 Multiple shot fastening gun Expired - Lifetime US3923228A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US493169A US3923228A (en) 1974-07-30 1974-07-30 Multiple shot fastening gun
DE2529110A DE2529110C3 (de) 1974-07-30 1975-06-30 Einrichtung an einem Handnagier
GB29026/75A GB1516873A (en) 1974-07-30 1975-07-10 Tool for driving a nail into a workpiece
JP50086256A JPS5148872A (de) 1974-07-30 1975-07-16
FR7523648A FR2280478A1 (fr) 1974-07-30 1975-07-29 Outil destine a enfoncer des pointes dans une piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US493169A US3923228A (en) 1974-07-30 1974-07-30 Multiple shot fastening gun

Publications (1)

Publication Number Publication Date
US3923228A true US3923228A (en) 1975-12-02

Family

ID=23959173

Family Applications (1)

Application Number Title Priority Date Filing Date
US493169A Expired - Lifetime US3923228A (en) 1974-07-30 1974-07-30 Multiple shot fastening gun

Country Status (5)

Country Link
US (1) US3923228A (de)
JP (1) JPS5148872A (de)
DE (1) DE2529110C3 (de)
FR (1) FR2280478A1 (de)
GB (1) GB1516873A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5131580A (en) * 1991-07-26 1992-07-21 Thomas Allman Emitter gun apparatus
US7395955B2 (en) 2006-01-06 2008-07-08 Staples The Office Superstore, Llc Stapler
US7540400B2 (en) 2006-01-06 2009-06-02 Staples The Office Superstore, Llc Stapler having a moveable strike plate with lockout mechanism
US10822880B2 (en) 2018-01-25 2020-11-03 Amy Knott Golf tee insert device and method for inserting a golf tee into the ground

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6488458B2 (en) 1996-02-23 2002-12-03 Hitachi, Ltd. Taper implant and a screw-fastening structure using a taper implant with female threads
JP3400276B2 (ja) * 1996-02-23 2003-04-28 株式会社日立製作所 ２つの部材をねじにより締結する方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758016A (en) * 1971-10-18 1973-09-11 Swingline Inc Tacker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1356894A (en) * 1919-11-11 1920-10-26 Victor Nailing Machine Company Nailing-machine
US3061837A (en) * 1961-08-07 1962-11-06 Samuel J Kent Nail-driving and clinching machine
US3357619A (en) * 1965-12-20 1967-12-12 Turner & Seymour Mfg Co Driving apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758016A (en) * 1971-10-18 1973-09-11 Swingline Inc Tacker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5131580A (en) * 1991-07-26 1992-07-21 Thomas Allman Emitter gun apparatus
US7395955B2 (en) 2006-01-06 2008-07-08 Staples The Office Superstore, Llc Stapler
US7540400B2 (en) 2006-01-06 2009-06-02 Staples The Office Superstore, Llc Stapler having a moveable strike plate with lockout mechanism
US10822880B2 (en) 2018-01-25 2020-11-03 Amy Knott Golf tee insert device and method for inserting a golf tee into the ground

Also Published As

Publication number Publication date
GB1516873A (en) 1978-07-05
DE2529110A1 (de) 1976-02-12
DE2529110B2 (de) 1979-04-26
FR2280478A1 (fr) 1976-02-27
JPS5148872A (de) 1976-04-27
FR2280478B1 (de) 1980-01-18
DE2529110C3 (de) 1979-12-20

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Date Code Title Description
AS Assignment

Owner name: ACCO USA, INC., A DE CORP.

Free format text: CHANGE OF NAME;ASSIGNOR:SWINGLINE INC., A DE CORP.;REEL/FRAME:006090/0250

Effective date: 19920323