EP0543617B1 - A stapling machine - Google Patents
A stapling machine Download PDFInfo
- Publication number
- EP0543617B1 EP0543617B1 EP19920310478 EP92310478A EP0543617B1 EP 0543617 B1 EP0543617 B1 EP 0543617B1 EP 19920310478 EP19920310478 EP 19920310478 EP 92310478 A EP92310478 A EP 92310478A EP 0543617 B1 EP0543617 B1 EP 0543617B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magazine
- staple
- stapling machine
- spring
- staples
- 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
Links
- 230000000717 retained effect Effects 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
Images
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
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/16—Staple-feeding devices, e.g. with feeding means, supports for staples or accessories concerning feeding devices
- B25C5/1689—Staple-feeding devices, e.g. with feeding means, supports for staples or accessories concerning feeding devices with means for indicating the number of staples remaining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/02—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
- B25C5/0285—Hand-held stapling tools, e.g. manually operated, i.e. not resting on a working surface during operation
- B25C5/0292—Hand-held stapling tools, e.g. manually operated, i.e. not resting on a working surface during operation with the objects to be stapled together introduced perpendicularly to the longitudinal axis of the tool in an opening formed by an anvil and a plunger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/16—Staple-feeding devices, e.g. with feeding means, supports for staples or accessories concerning feeding devices
- B25C5/1606—Feeding means
- B25C5/161—Feeding means employing a spring-loaded puller
Definitions
- THE PRESENT INVENTION relates to a stapling machine and more particularly to a stapling machine adapted to staple together a plurality of sheets of paper.
- a conventional stapling machine incorporates a magazine which holds a "strip" of staples.
- the staples are biassed, by a staple pusher, towards an ejection slot provided at one end of the magazine.
- An ejection blade is adapted to move through the ejection slot to dispense staples from the magazine.
- the two legs of the staple then pass, in use of the device, through a plurality of sheets of paper and are then clinched together by means of an anvil.
- the strip of staples provided for a stapling machine of this type comprises a plurality of wire staples which are secured together by means of an adhesive.
- the staples are mounted within the staple magazine and are guided smoothly towards the ejection slot. Difficulties can, however, arise when only a few staples of the strip of staples remain. There is a tendency for the staples to then tilt as the end staple is ejected from the magazine. To overcome this problem it is often necessary to provide a "staple steady" which lies over the strip of staples.
- DE-A-811464 discloses a stapling machine incorporating a magazine for a strip of staples, means adjacent one end of the magazine defining a staple ejection slot, an ejection blade adapted to eject a staple through the ejection slot, means to actuate the ejection blade, and a staple pusher adapted to push staples along the magazine towards the ejection slot.
- the stapling machine incorporates a constant tension spring engaging the staple pusher to apply a force to the staple pusher.
- the constant tension spring is in the form of a spring strip having a coiled end retained at a substantially predetermined position, a portion of spring strip extending from the coiled end to the staple pusher. The coiled end is located adjacent the ejection slot underneath the staples within the staple magazine.
- WO92/08579 (which document forms part of the state of the art according to Article 54(3) EPC) discloses a stapling machine in which a constant tension spring having two coiled portions is utilised. The coiled portions are received in recesses defined in the under-surface of a staple steady.
- the present invention seeks to provide an improved stapling machine.
- a stapling machine incorporating a magazine for a strip of staples, means adjacent one end of the magazine defining a staple ejection slot, an ejection blade adapted to eject a staple through the ejection slot, means to actuate the ejection blade, a staple pusher adapted to push staples along the magazine towards the ejection slot and constant tension spring means engaging the staple pusher to apply a force to the staple pusher, wherein the spring means comprise two spiral coils of spring strip, a respective portion of spring strip extending symmetrically with regard to the plane of symmetry of the staple pusher from each coil to the staple pusher, the said coils being retained in cavities defined in a guide, the guide being located in a chamber provided in a staple steady adapted to lie over the magazine to steady the staples within the magazine.
- a magazine carrier is provided and the staple magazine is slidably mounted on the said magazine carrier so that the staple magazine may move from an operative position to a protracted position.
- a catch is provided to retain the magazine in the operative position, the arrangement being such that if the catch is released the spring means will cause the staple magazine to move to the protracted position.
- the stapling machine of the invention may be in the form of a pliers-type stapling machine.
- Preferably means are provided to indicate when the supply of staples within the magazine is about to be exhausted.
- said means comprise one or more indicia present on the spring strip and a window to permit the spring strip to be viewed, the said one or more indicia being so located that they become visible when the supply of staples is about to be exhausted.
- the spring means comprise a single spring strip which defines the two coils and the two said portions, part of the spring strip which interconnects said portions engaging the staple pusher.
- FIG. 1 is an exploded view of one embodiment of stapling machine in accordance with the invention.
- This stapling machine is of the "pliers" type.
- the stapling machine includes an upper cover 30 containing an assembly to which is pivotally connected an anvil carrier 31, by means of trunnions 32 provided at the end of the anvil carrier.
- the anvil carrier carries, at its forward end, an anvil 33 which is retained in position by means of an anvil retaining spring 34 which defines an aperture 35 which engages a spigot 36 provided on the anvil carrier 31.
- the anvil retaining spring 34 also includes an upwardly arched portion 37 which engages the under-surface of a staple magazine carrier 38 which is of channel-form, and which has side walls carrying depending lugs 39 defining arcuate recesses 40 adapted to engage the trunnions 32.
- the side walls of the channel of the magazine carrier 38 end with inwardly turned flanges 41 and also each side wall has an arcuate slot 42 formed therein.
- one side wall as is visible in Figure 5, has an aperture 43 formed therein which constitutes a "window".
- a staple magazine 44 mounted within the magazine carrier 38 is a staple magazine 44 in the form of an elongate channel, the side walls of the channel being in-turned to form flanges 45 at the forward end, thus defining a staple ejection slot 46.
- a staple ejector or pusher 47 is provided adapted to slide along the magazine 44 to bias staples towards the ejection slot.
- a staple steady 48 which may be formed of an integrally moulded plastics body, is provided adapted to lie over the magazine 44 and to steady the staples within the magazine as they move forwardly.
- a recess is formed in the under-surface of the staple steady 48 to receive the staple pusher 47.
- the recess is in the form of a channel which defines a path of movement for the staple pusher 47.
- a constant tension spring 49 is provided which has two ends, each having a spiral portion 50 and a portion 51 inter-connecting the two ends with the spiral portions.
- the portion 51 is adapted to engage an abutment 47', provided for that purpose on the staple pusher.
- a guide 52 is provided which defines two circular-sectioned cavities dimensioned to accommodate the spiral portions 50 of the spring 49.
- the guide 52 is adapted to be received in a chamber provided for that purpose, within the staple steady 48.
- the chamber to receive the guide 52 is associated with the recess for the staple pusher.
- the guide 52 defines a slot 52'.
- An aperture 53 is formed in the side of the staple steady 48, also to form a window, the apertures 43 and 53 and the slot 52' being adapted to be co-aligned.
- the spiral portions 50 of the spring 49 are inserted in the cavities in the guide 52, and the guide 52 is then mounted in the appropriate chamber in the staple steady 48.
- the end 51 of the spring 49 extends across the recess which receives the staple pusher.
- the upper part of the staple steady 48 is formed to accommodate snugly a spring 54.
- the spring 54 has a portion 55 at the forward end thereof which engages an aperture 56 provided in a staple ejector blade 57.
- the spring 54 comprises a linear part extending from the portion 55.
- the linear part terminates with an upwardly and forwardly curled region, so that the spring 54 has two substantially parallel portions joined by a "U” bend.
- the "U” bend abuts a curved recess provided for that purpose on the top of the staple steady 48.
- An actuating lever 58 is provided having a bearing 59 defined at substantially its mid-point, the bearing engaging a recess 60 provided for that purpose substantially at the mid-point of the anvil carrier 31.
- the forward end of the actuating lever 58 carries a roller 60 which passes through the arcuate slots 42 provided in the magazine carrier and which also engages the top surface of the forwardly extending lower portion of the spring 54.
- a front plate 61 is provided for the magazine 44 in the form of a plastic moulding that is snap-fitted to the front of the magazine 44, covering the flanges 45.
- a release catch 62 is provided which is mounted on the front of the housing 30 with the aid of a release catch clip 63.
- An aperture or window 64 is defined in the side of the main housing 30 adapted to be aligned with the apertures 43 and 53.
- the magazine may slide, under a bias provided by the spring 49, to a position in which the magazine 44 protrudes from the housing 30.
- the magazine 44 may be grasped so that the magazine may be drawn forwardly out of the housing to replenish the supply of staples.
- the staple pusher 47 is engaged by the staples within the magazine, and the staple pusher 47 is thus moved towards the right against the bias from the constant tension spring 49.
- the portion 51 of the constant tension spring inter-connecting the two ends which each terminate in the spiral portions 50 engages the abutment 47' on the staple pusher 47.
- the spiral portions thus effectively unwind, and the constant tension spring applies a substantially constant tension to the staple pusher 47.
- the two spiral portions 51 of the spring 49 apply equal forces, and thus the total force applied to the staple pusher 47 is aligned with its axis of movement. There is thus no tendency for the staple pusher 47 to twist and jam.
- the actuating lever 58 When the stapling machine has been supplied with staples and the actuating lever 58 is grasped, simultaneously with the housing 30, the actuating lever will move pivotally about the axis defined by the bearing 59 and the recess 60. This will also tend to move the anvil carrier about the axis defined by the trunnions 32 and the recesses 40.
- the arched portion 37 of the anvil retaining spring 34 would initially be flattened and any paper located between the anvil and the base of the magazine carrier 38 will be effectively gripped by the "pliers" action.
- part of the exterior of one of the spiral portions 50 of the constant tension spring 49 can be viewed through the aligned slot 52' and the apertures and windows 64, 43 and 53.
- This part of the constant tension spring may provide some marking which, when it becomes visible through the aligned windows and apertures, provides an indication that the supply of staples within the stapling machine is about to be exhausted.
- Figure 2 illustrates another embodiment of the invention very similar to that illustrated in Figure 1. Like references are used for like parts in Figure 1 and Figure 2 to obviate unnecessary re-description.
- the staple ejector blade 57 in the embodiment of Figure 6 has a rearwardly directed spring portion 70, which co-operates with a rigid beam 71 of channel form that is mounted within the main housing 30. Part of the beam is received in a slot formed on the projection on the upper part of the staple steady. The projection defines a recess that accommodates a curved end part of the spring portion 70.
- the combination of the channel 71 and the spring 70 performs the function of the spring 54 as described with reference to the Figure 1 embodiment.
- window to show the number of staples remaining has been described as being provided on one side of the stapling machine.
- windows may be provided on both sides of the stapling machine to enable the status of the supply of staples to be observed regardless of from which side the stapling machine is being viewed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Description
- THE PRESENT INVENTION relates to a stapling machine and more particularly to a stapling machine adapted to staple together a plurality of sheets of paper.
- A conventional stapling machine incorporates a magazine which holds a "strip" of staples. The staples are biassed, by a staple pusher, towards an ejection slot provided at one end of the magazine. An ejection blade is adapted to move through the ejection slot to dispense staples from the magazine. The two legs of the staple then pass, in use of the device, through a plurality of sheets of paper and are then clinched together by means of an anvil.
- The strip of staples provided for a stapling machine of this type comprises a plurality of wire staples which are secured together by means of an adhesive. The staples are mounted within the staple magazine and are guided smoothly towards the ejection slot. Difficulties can, however, arise when only a few staples of the strip of staples remain. There is a tendency for the staples to then tilt as the end staple is ejected from the magazine. To overcome this problem it is often necessary to provide a "staple steady" which lies over the strip of staples.
- This problem is actually increased in most stapling machines due to the fact that the element which pushes the staples along the staple magazine towards the ejection slot is spring biassed and, when the supply of staples is nearly exhausted, the staple pusher has almost reached its terminal position. Using a conventional spring, if the strength of the spring is selected so that the spring is exerting a significant force when the staple pusher has almost reached its terminal position (which force is sufficient to hold the staples as the last few staples are ejected from the magazine) when the pusher has been pulled back to allow a fresh strip of staples to be inserted into the magazine, the force exerted by the pusher may be far too large.
- DE-A-811464 discloses a stapling machine incorporating a magazine for a strip of staples, means adjacent one end of the magazine defining a staple ejection slot, an ejection blade adapted to eject a staple through the ejection slot, means to actuate the ejection blade, and a staple pusher adapted to push staples along the magazine towards the ejection slot. The stapling machine incorporates a constant tension spring engaging the staple pusher to apply a force to the staple pusher. The constant tension spring is in the form of a spring strip having a coiled end retained at a substantially predetermined position, a portion of spring strip extending from the coiled end to the staple pusher. The coiled end is located adjacent the ejection slot underneath the staples within the staple magazine.
- WO92/08579 (which document forms part of the state of the art according to Article 54(3) EPC) discloses a stapling machine in which a constant tension spring having two coiled portions is utilised. The coiled portions are received in recesses defined in the under-surface of a staple steady.
- The present invention seeks to provide an improved stapling machine.
- According to this invention there is provided a stapling machine incorporating a magazine for a strip of staples, means adjacent one end of the magazine defining a staple ejection slot, an ejection blade adapted to eject a staple through the ejection slot, means to actuate the ejection blade, a staple pusher adapted to push staples along the magazine towards the ejection slot and constant tension spring means engaging the staple pusher to apply a force to the staple pusher, wherein the spring means comprise two spiral coils of spring strip, a respective portion of spring strip extending symmetrically with regard to the plane of symmetry of the staple pusher from each coil to the staple pusher, the said coils being retained in cavities defined in a guide, the guide being located in a chamber provided in a staple steady adapted to lie over the magazine to steady the staples within the magazine.
- Advantageously a magazine carrier is provided and the staple magazine is slidably mounted on the said magazine carrier so that the staple magazine may move from an operative position to a protracted position.
- Preferably a catch is provided to retain the magazine in the operative position, the arrangement being such that if the catch is released the spring means will cause the staple magazine to move to the protracted position.
- The stapling machine of the invention may be in the form of a pliers-type stapling machine.
- Preferably means are provided to indicate when the supply of staples within the magazine is about to be exhausted.
- Conveniently said means comprise one or more indicia present on the spring strip and a window to permit the spring strip to be viewed, the said one or more indicia being so located that they become visible when the supply of staples is about to be exhausted.
- Preferably the spring means comprise a single spring strip which defines the two coils and the two said portions, part of the spring strip which interconnects said portions engaging the staple pusher.
- In order that the invention may be more readily understood, and so that further features thereof may be appreciated, the invention will now be described, by way of example, with reference to the accompanying drawings in which
- FIGURE 1 is an exploded view of a modified embodiment of the invention, and
- FIGURE 2 is an exploded view, corresponding to Figure 5 of another modified embodiment of the invention.
- Figure 1 is an exploded view of one embodiment of stapling machine in accordance with the invention. This stapling machine is of the "pliers" type. The stapling machine includes an
upper cover 30 containing an assembly to which is pivotally connected ananvil carrier 31, by means oftrunnions 32 provided at the end of the anvil carrier. The anvil carrier carries, at its forward end, ananvil 33 which is retained in position by means of ananvil retaining spring 34 which defines anaperture 35 which engages aspigot 36 provided on theanvil carrier 31. Theanvil retaining spring 34 also includes an upwardlyarched portion 37 which engages the under-surface of astaple magazine carrier 38 which is of channel-form, and which has side walls carrying dependinglugs 39 definingarcuate recesses 40 adapted to engage thetrunnions 32. The side walls of the channel of themagazine carrier 38 end with inwardly turnedflanges 41 and also each side wall has anarcuate slot 42 formed therein. Also, one side wall, as is visible in Figure 5, has an aperture 43 formed therein which constitutes a "window". Mounted within themagazine carrier 38 is astaple magazine 44 in the form of an elongate channel, the side walls of the channel being in-turned to formflanges 45 at the forward end, thus defining astaple ejection slot 46. - A staple ejector or
pusher 47 is provided adapted to slide along themagazine 44 to bias staples towards the ejection slot. - A staple steady 48, which may be formed of an integrally moulded plastics body, is provided adapted to lie over the
magazine 44 and to steady the staples within the magazine as they move forwardly. A recess is formed in the under-surface of the staple steady 48 to receive thestaple pusher 47. The recess is in the form of a channel which defines a path of movement for thestaple pusher 47. - A
constant tension spring 49 is provided which has two ends, each having aspiral portion 50 and aportion 51 inter-connecting the two ends with the spiral portions. Theportion 51 is adapted to engage an abutment 47', provided for that purpose on the staple pusher. - A
guide 52 is provided which defines two circular-sectioned cavities dimensioned to accommodate thespiral portions 50 of thespring 49. Theguide 52 is adapted to be received in a chamber provided for that purpose, within the staple steady 48. The chamber to receive theguide 52 is associated with the recess for the staple pusher. Theguide 52 defines a slot 52'. Anaperture 53 is formed in the side of the staple steady 48, also to form a window, theapertures 43 and 53 and the slot 52' being adapted to be co-aligned. - In assembling the stapling machine the
spiral portions 50 of thespring 49 are inserted in the cavities in theguide 52, and theguide 52 is then mounted in the appropriate chamber in the staple steady 48. Theend 51 of thespring 49 extends across the recess which receives the staple pusher. - The upper part of the staple steady 48 is formed to accommodate snugly a
spring 54. Thespring 54 has aportion 55 at the forward end thereof which engages anaperture 56 provided in astaple ejector blade 57. Thespring 54 comprises a linear part extending from theportion 55. The linear part terminates with an upwardly and forwardly curled region, so that thespring 54 has two substantially parallel portions joined by a "U" bend. The "U" bend abuts a curved recess provided for that purpose on the top of the staple steady 48. - An actuating
lever 58 is provided having abearing 59 defined at substantially its mid-point, the bearing engaging arecess 60 provided for that purpose substantially at the mid-point of theanvil carrier 31. The forward end of the actuatinglever 58 carries aroller 60 which passes through thearcuate slots 42 provided in the magazine carrier and which also engages the top surface of the forwardly extending lower portion of thespring 54. - A
front plate 61 is provided for themagazine 44 in the form of a plastic moulding that is snap-fitted to the front of themagazine 44, covering theflanges 45. Arelease catch 62 is provided which is mounted on the front of thehousing 30 with the aid of arelease catch clip 63. An aperture orwindow 64 is defined in the side of themain housing 30 adapted to be aligned with theapertures 43 and 53. - It is to be appreciated that by releasing the
catch 62 the magazine may slide, under a bias provided by thespring 49, to a position in which themagazine 44 protrudes from thehousing 30. Themagazine 44 may be grasped so that the magazine may be drawn forwardly out of the housing to replenish the supply of staples. When the magazine is pushed back into the housing, thestaple pusher 47 is engaged by the staples within the magazine, and thestaple pusher 47 is thus moved towards the right against the bias from theconstant tension spring 49. Theportion 51 of the constant tension spring inter-connecting the two ends which each terminate in thespiral portions 50 engages the abutment 47' on thestaple pusher 47. The spiral portions thus effectively unwind, and the constant tension spring applies a substantially constant tension to thestaple pusher 47. The twospiral portions 51 of thespring 49 apply equal forces, and thus the total force applied to thestaple pusher 47 is aligned with its axis of movement. There is thus no tendency for thestaple pusher 47 to twist and jam. - When the stapling machine has been supplied with staples and the actuating
lever 58 is grasped, simultaneously with thehousing 30, the actuating lever will move pivotally about the axis defined by thebearing 59 and therecess 60. This will also tend to move the anvil carrier about the axis defined by thetrunnions 32 and therecesses 40. Thearched portion 37 of theanvil retaining spring 34 would initially be flattened and any paper located between the anvil and the base of themagazine carrier 38 will be effectively gripped by the "pliers" action. Subsequent movement of the actuatinganvil 58 will cause theroller 60 to move the lower part of thespring 54 downwardly, thus driving thestaple ejector blade 57 downwardly through thestaple ejection slot 46, driving a staple from thestaple magazine 44 so that the ends of the arms of the staple penetrate the paper and are then clinched by a recess provided on the anvil. - It is to be appreciated that part of the exterior of one of the
spiral portions 50 of theconstant tension spring 49 can be viewed through the aligned slot 52' and the apertures andwindows - Figure 2 illustrates another embodiment of the invention very similar to that illustrated in Figure 1. Like references are used for like parts in Figure 1 and Figure 2 to obviate unnecessary re-description.
- The
staple ejector blade 57 in the embodiment of Figure 6 has a rearwardly directedspring portion 70, which co-operates with arigid beam 71 of channel form that is mounted within themain housing 30. Part of the beam is received in a slot formed on the projection on the upper part of the staple steady. The projection defines a recess that accommodates a curved end part of thespring portion 70. The combination of thechannel 71 and thespring 70 performs the function of thespring 54 as described with reference to the Figure 1 embodiment. - In the described embodiments of the invention a window to show the number of staples remaining has been described as being provided on one side of the stapling machine. Of course, in alternative embodiments of the invention windows may be provided on both sides of the stapling machine to enable the status of the supply of staples to be observed regardless of from which side the stapling machine is being viewed.
- Whilst the invention has been described with reference to a "pliers" type machine it is to be appreciated that features of the invention may be incorporated into a conventional or "desk-top" machine.
Claims (7)
- A stapling machine incorporating a magazine(44) for a strip of staples, means(45) adjacent one end of the magazine defining a staple ejection slot(46), an ejection blade(57) adapted to eject a staple through the ejection slot, means(58) to actuate the ejection blade, a staple pusher(47) adapted to push staples along the magazine towards the ejection slot and constant tension spring means(49) engaging the staple pusher to apply a force to the staple pusher, characterised in that the spring means comprise two spiral coils(50) of spring strip, a respective portion(51) of spring strip extending symmetrically with regard to the plane of symmetry of the staple pusher from each coil to the staple pusher, the said coils(50) being retained in cavities defined in a guide(52), the guide being located in a chamber provided in a staple steady(48) adapted to lie over the magazine to steady the staples within the magazine.
- A stapling machine according to Claim 1 wherein a magazine carrier(38) is provided and the staple magazine is slidably mounted on the said magazine carrier so that the staple magazine may move from an operative position to a protracted position.
- A stapling machine according to Claim 2 wherein a catch(62) is provided to retain the magazine(44) in the operative position, the arrangement being such that if the catch is released the spring means will cause the staple magazine to move to the protracted position.
- A stapling machine according to any one of the preceding Claims in the form of a pliers-type stapling machine.
- A stapling machine according to any one of the preceding Claims wherein means are provided to indicate when the supply of staples within the magazine is about to be exhausted.
- A stapling machine according to Claim 5 wherein said means comprise one or more indicia present on the spring strip and a window to permit the spring strip to be viewed, the said one or more indicia being so located that they become visible when the supply of staples is about to be exhausted.
- A stapling machine according to any one of the preceding Claims wherein the spring means comprise a single spring strip which defines the two coils(50) and the two said portions(51), part of the spring strip which interconnects said portions(51) engaging the staple pusher(47).
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9124499 | 1991-11-19 | ||
GB919124499A GB9124499D0 (en) | 1991-11-19 | 1991-11-19 | Improvements in or relating to a stapling machine |
GB919124498A GB9124498D0 (en) | 1991-11-19 | 1991-11-19 | Improvements in or relating to a stapling machine |
GB9124498 | 1991-11-19 | ||
GB919125596A GB9125596D0 (en) | 1991-11-19 | 1991-12-02 | Improvements in or relating to a stapling machine |
GB9125596 | 1991-12-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0543617A1 EP0543617A1 (en) | 1993-05-26 |
EP0543617B1 true EP0543617B1 (en) | 1995-09-20 |
Family
ID=27265934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920310478 Expired - Lifetime EP0543617B1 (en) | 1991-11-19 | 1992-11-17 | A stapling machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0543617B1 (en) |
DE (1) | DE69204967T2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023022265A1 (en) * | 2021-08-20 | 2023-02-23 | 김영진 | Box edge stapler for pressing ends of staple through dual-pulling of handle bar |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29701802U1 (en) * | 1997-01-31 | 1997-03-27 | Chang, Chun Yuan, Taipeh/T'ai-pei | stapler |
SE1300048A1 (en) * | 2013-01-18 | 2014-07-19 | Isaberg Rapid Ab | Stapler |
FR3001449B1 (en) | 2013-01-25 | 2019-08-16 | Moteurs Leroy-Somer | DRIVE MACHINE OF AN ELEVATOR. |
US11267117B2 (en) | 2018-09-14 | 2022-03-08 | ACCO Brands Corporation | Staple pusher assembly and method of installing same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1970101A (en) * | 1931-01-17 | 1934-08-14 | Boston Wire Stitcher Co | Stapling machine or tacker |
US2501564A (en) * | 1945-12-12 | 1950-03-21 | Charles B Goodstein | Staple feed for fastener applying machines |
DE811464C (en) * | 1949-12-02 | 1951-08-20 | Kurt Dipl-Ing Dr Dziewior | Stapler |
GB9025131D0 (en) * | 1990-11-19 | 1991-01-02 | Ofrex Group Holdings Plc | Improvements in or relating to a stapling machine |
DE9106427U1 (en) * | 1991-05-24 | 1991-08-29 | Elastic GmbH, 6500 Mainz | Stapling pliers |
-
1992
- 1992-11-17 EP EP19920310478 patent/EP0543617B1/en not_active Expired - Lifetime
- 1992-11-17 DE DE1992604967 patent/DE69204967T2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023022265A1 (en) * | 2021-08-20 | 2023-02-23 | 김영진 | Box edge stapler for pressing ends of staple through dual-pulling of handle bar |
US12036652B2 (en) | 2021-08-20 | 2024-07-16 | Young Jin Kim | Stapler for box edges to press end of iron core by double pulling of handle bar |
Also Published As
Publication number | Publication date |
---|---|
DE69204967T2 (en) | 1996-02-08 |
DE69204967D1 (en) | 1995-10-26 |
EP0543617A1 (en) | 1993-05-26 |
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