WO1992001527A1 - A tool for chamfering an end of a pipe - Google Patents

A tool for chamfering an end of a pipe Download PDF

Info

Publication number
WO1992001527A1
WO1992001527A1 PCT/GB1991/001191 GB9101191W WO9201527A1 WO 1992001527 A1 WO1992001527 A1 WO 1992001527A1 GB 9101191 W GB9101191 W GB 9101191W WO 9201527 A1 WO9201527 A1 WO 9201527A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
tool
pipe
head portion
tool according
Prior art date
Application number
PCT/GB1991/001191
Other languages
French (fr)
Inventor
John Hardington David Bartlett
Original Assignee
Bartlett, Elizabeth, Joyce
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
Priority claimed from GB909015856A external-priority patent/GB9015856D0/en
Priority claimed from GB909021012A external-priority patent/GB9021012D0/en
Application filed by Bartlett, Elizabeth, Joyce filed Critical Bartlett, Elizabeth, Joyce
Publication of WO1992001527A1 publication Critical patent/WO1992001527A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
    • B23B5/167—Tools for chamfering the ends of bars or tubes

Definitions

  • This invention relates to a tool for chamfering an end of a pipe.
  • a tool for chamfering an end of a pipe which tool comprises a hand holdable body portion, a head portion, and a chamfering blade mounted in the head portion, the blade being provided with a notch for receiving the end of the pipe to be chamfered.
  • the blade may be mounted between a pair of jaw members which form part of the head portion and which receive the end of the pipe to be chamfered.
  • the blade is a fixed blade , i desired however the blade may be a replaceable blade.
  • the blade may also be a reversible blade, an interchangeable blade, or an adjustable blade. Different blades may have differently shaped notches for giving different types of chamfering.
  • the head portion may include an abutment member for pressing against the side of the pipe being chamfered.
  • the abutment member is preferably a rod member.
  • the body portion may have a neck part adjacent the head portion and a bulbous end part formed as an extension of the neck part. Such a body portion may be especially convenient to hold.
  • the body portion may have an aperture by which the tool can be hung when it is not in use.
  • the aperture is preferably positioned at an end of the body portion remote from the head portion, although the aperture may be positioned elsewhere if desired.
  • the body portion and the head portion will be integrally moulded together from a plastics material. Any suitable and appropriate plastics material may be employed.
  • the blade will usually be a steel blade. Other metals may however be employed providing that they do not blunt too quickly during use.
  • Figure 1 shows somewhat schematically a tool in use for chamfering an end of a pipe
  • Figure 2 illustrates how the end of the pipe has been chamfered with the tool shown in Figure 1 ;
  • Figure 3 is a perspective view of the tool shown in Figure 1 ;
  • Figure 4 is a longitudinal section through the tool as shown in Figure 3?
  • Figure 5 is a section on the line Y-Y shown in Figure 4;
  • Figure ⁇ is a section on the line X-X shown in Figure 4.
  • Figure 7 shows in more detail the construction of a head part of the tool shown in Figure 3 and
  • Figure 8 is a perspective view of an alternative tool.
  • a tool 2 for chamfering and end 4 of a pipe 6 As can be seen from Figure 1, the tool 2 is moved in an anti ⁇ clockwise direction towards the user 8. Before the end 4 of the pipe 6 is chamfered, it will be in the form of a general right angle as shown in the bottom right hand part of Figure 2. After the end 4 of the pipe has been chamfered, it will have a chamfered edge 10 as shown in the top right hand corner of Figure 2.
  • the tool 2 comprises a hand holdable body portion 12, a head portion 14, and a chamfering blade 1.6 mounted in the head portion 14.
  • the blade 16 is provided with a notch 18 for receiving the end 4 of the pipe 6 to be chamfered.
  • the blade 16 is mounted between a pair of jaw members 20, 22 as best seen in Figures 3 and 6.
  • the head portion 14 is shaped as shown in Figures 3, 4, 6 and 7 so that the blade 16 can be removably fitted into the head portion 14, so that the blade 16 can be replaced in the event that it becomes blunt or otherwise worn.
  • the body portion 12 has a neck part 24 adjacent the head part 14, and a bulbous end part 26 formed as an extension of the neck part 24.
  • the body portion 12 has four longitudinally extending ribs 28 which define a cross as shown in Figure 5.
  • each pair of adjacent ribs 28 defines a right angle and eac pair of adjacent ribs 28 has a plurality of quadrant members 30 along its length.
  • the body portion 4 is thus formed of a minimum of material whilst being strong and comfortable to grip.
  • the body portion 12 has an aperture 3 by which the tool 2 can be hung when it is not in use. Thus the tool 2 can be hung from a hook or a nail (not shown).
  • the aperture 3 is positioned at the end of the body portion 12 remote from the head portion 14 as can be seen from Figures 3 and 4.
  • the body portion 12 and the head portion 14 are integrally moulded together from a plastics material.
  • the blade 16, which is usually a steel blade, is then inserted into position between the jaw members 20, 22.
  • Tool 2 shown in Figure 8 is similar to the tool 2 shown in Figure 3 and similar parts have been given the same reference numerals for ease of comparison and understanding.
  • the head portion 14 is provided with an abutment member in the form of a rod member 34.
  • the rod member 34 is located as shown in apertures 36 in the jaw members 20, 22. As the end of a pipe is being chamfered, the rod member 34 can be pressed against the end of the pipe being chamfered. The chamfering of some pipes will require quite a lot of force and the rod member 34 is effective to act as a guide and also as a wear-resistant part against which the end of the pipe can rub during chamfering without damaging the tool.
  • the rod member 34 is made of a metal such for example as steel.
  • the rod member 34 may • be in the form of a roll pin if desired.
  • the head portion 14 in Figure 8 is of a slightly different design to that shown in Figure 3.
  • the jaw members 20, 22 are each reinforced by an abutment member 40.
  • the blade 16 is a fixed blade which is fixed in position by moulding the jaw members 20, 22 over the side edges of the blade 16 during moulding of the tool 2.
  • the shape of the body portion 12 and/or the shape of the head portion 14 may be varied.
  • the blades 16 may be of other shapes and the replaceable blade 16 shown in Figures 1 - 7 may be a fixed blade.
  • the body portion 12 and the head portion 14 may be made of a material other than a plastics material so that they may be made, for example, of a metal if desired.
  • the outer edge of the end of a pipe will be chamfered whilst at the same time the inner edge is cleaned, for example of cutting swarf.
  • the angle of inclination of the tool 2 to the end of the pipe By varying the angle of inclination of the tool 2 to the end of the pipe , the amount of material removed from the outer and/or inner edges of the pipe can be varied.
  • the tool 2 may be produced in different sizes for use with different sizes of pipes. Usually, only one size of tool will be required for use with a wide range of different pipe ' sizes.
  • the tool of the present invention may be used for chamfering other products if desired.
  • the tool can be used for chamfering edges of sheet material, for example formica sheet material.
  • the tool may be used for chamfering the edge of any type of material such for example as any metal, any wood or any plastics material.
  • the material may be in sheet or pipe form, or it may be in any other suitable and appropriate shape. Where the material is in pipe form, then the pipes may be such as to be fitted in high or low pressure piping systems. If the blades used in the tool are to be reversible, replaceable or interchangeable, then the blades may be mounted in reversible, replaceable or interchangeable heads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Knives (AREA)

Abstract

A tool (2) for chamfering an end (4) of a pipe (6), which tool (2) comprises a hand holdable body portion (12), a head portion (14), and a chamfering blade (16) mounted in the head portion (14), the blade (16) being provided with a notch (18) for receiving the end (4) of the pipe (6) to be chamfered.

Description

A TOOL FOR CHAMFERING AN EM) OF A PIPE
This invention relates to a tool for chamfering an end of a pipe.
The ends of pipes such for example as plastics pipes are often unsatisfactory in that they are rough so that they may contain burrs. These rough edges of the pipes often prevent them being a good fit to other pipes or other devices.
It is an aim of the present invention to provide a tool which is able to chamfer an end of a pipe and thus enable the pipe to be a good fit to another pipe or any other suitable and appropriate device.
Accordingly, in one non-limiting embodiment of the invention, there is provided a tool for chamfering an end of a pipe, which tool comprises a hand holdable body portion, a head portion, and a chamfering blade mounted in the head portion, the blade being provided with a notch for receiving the end of the pipe to be chamfered.
The blade may be mounted between a pair of jaw members which form part of the head portion and which receive the end of the pipe to be chamfered.
Preferably, the blade is a fixed blade, i desired however the blade may be a replaceable blade. The blade may also be a reversible blade, an interchangeable blade, or an adjustable blade. Different blades may have differently shaped notches for giving different types of chamfering.
The head portion may include an abutment member for pressing against the side of the pipe being chamfered. The abutment member is preferably a rod member.
The body portion may have a neck part adjacent the head portion and a bulbous end part formed as an extension of the neck part. Such a body portion may be especially convenient to hold. The body portion may have an aperture by which the tool can be hung when it is not in use. The aperture is preferably positioned at an end of the body portion remote from the head portion, although the aperture may be positioned elsewhere if desired. Usually, the body portion and the head portion will be integrally moulded together from a plastics material. Any suitable and appropriate plastics material may be employed.
The blade will usually be a steel blade. Other metals may however be employed providing that they do not blunt too quickly during use.
Embodiments of the invention will now be described solely by way of example and with reference to the accompanying drawings in which: Figure 1 shows somewhat schematically a tool in use for chamfering an end of a pipe;
Figure 2 illustrates how the end of the pipe has been chamfered with the tool shown in Figure 1 ; Figure 3 is a perspective view of the tool shown in Figure 1 ;
Figure 4 is a longitudinal section through the tool as shown in Figure 3? Figure 5 is a section on the line Y-Y shown in Figure 4;
Figure β is a section on the line X-X shown in Figure 4;
Figure 7 shows in more detail the construction of a head part of the tool shown in Figure 3 and
Figure 8 is a perspective view of an alternative tool.
Referring to the drawings ,there is shown a tool 2 for chamfering and end 4 of a pipe 6. As can be seen from Figure 1, the tool 2 is moved in an anti¬ clockwise direction towards the user 8. Before the end 4 of the pipe 6 is chamfered, it will be in the form of a general right angle as shown in the bottom right hand part of Figure 2. After the end 4 of the pipe has been chamfered, it will have a chamfered edge 10 as shown in the top right hand corner of Figure 2.
As can best be seen from Figures 3 and 4, the tool 2 comprises a hand holdable body portion 12, a head portion 14, and a chamfering blade 1.6 mounted in the head portion 14. The blade 16 is provided with a notch 18 for receiving the end 4 of the pipe 6 to be chamfered.
The blade 16 is mounted between a pair of jaw members 20, 22 as best seen in Figures 3 and 6. The head portion 14 is shaped as shown in Figures 3, 4, 6 and 7 so that the blade 16 can be removably fitted into the head portion 14, so that the blade 16 can be replaced in the event that it becomes blunt or otherwise worn.
As can best be seen from Figures 3, 4 and 5 the body portion 12 has a neck part 24 adjacent the head part 14, and a bulbous end part 26 formed as an extension of the neck part 24. The body portion 12 has four longitudinally extending ribs 28 which define a cross as shown in Figure 5. Thus each pair of adjacent ribs 28 defines a right angle and eac pair of adjacent ribs 28 has a plurality of quadrant members 30 along its length. The body portion 4 is thus formed of a minimum of material whilst being strong and comfortable to grip.
The body portion 12 has an aperture 3 by which the tool 2 can be hung when it is not in use. Thus the tool 2 can be hung from a hook or a nail (not shown). The aperture 3 is positioned at the end of the body portion 12 remote from the head portion 14 as can be seen from Figures 3 and 4.
The body portion 12 and the head portion 14 are integrally moulded together from a plastics material. The blade 16, which is usually a steel blade, is then inserted into position between the jaw members 20, 22.
Referring now to Figure 8, there is shown a perspective view of an alternative tool 2. Tool 2 shown in Figure 8 is similar to the tool 2 shown in Figure 3 and similar parts have been given the same reference numerals for ease of comparison and understanding.
In Figure 8, it will be seen that the head portion 14 is provided with an abutment member in the form of a rod member 34. The rod member 34 is located as shown in apertures 36 in the jaw members 20, 22. As the end of a pipe is being chamfered, the rod member 34 can be pressed against the end of the pipe being chamfered. The chamfering of some pipes will require quite a lot of force and the rod member 34 is effective to act as a guide and also as a wear-resistant part against which the end of the pipe can rub during chamfering without damaging the tool. For this purpose, the rod member 34 is made of a metal such for example as steel. The rod member 34 may • be in the form of a roll pin if desired. As can be seen from a comparison of Figures 3 and 8, the head portion 14 in Figure 8 is of a slightly different design to that shown in Figure 3. In particular, in Figure 8 there is a transversely extending abutment wall 38 which is used to give the -head portion 14 good strength. In Figure 3 , the jaw members 20, 22 are each reinforced by an abutment member 40.
In the tool 2 shown in Figure 8, the blade 16 is a fixed blade which is fixed in position by moulding the jaw members 20, 22 over the side edges of the blade 16 during moulding of the tool 2.
It is to be appreciated that the embodiments of the invention described above with reference to the accompanying drawings have been given by way of example only and that modifications may be effected. Thus, for example, the shape of the body portion 12 and/or the shape of the head portion 14 may be varied. The blades 16 may be of other shapes and the replaceable blade 16 shown in Figures 1 - 7 may be a fixed blade. The body portion 12 and the head portion 14 may be made of a material other than a plastics material so that they may be made, for example, of a metal if desired. Usually, during use of • the tool 2, the outer edge of the end of a pipe will be chamfered whilst at the same time the inner edge is cleaned, for example of cutting swarf. By varying the angle of inclination of the tool 2 to the end of the pipe , the amount of material removed from the outer and/or inner edges of the pipe can be varied. The tool 2 may be produced in different sizes for use with different sizes of pipes. Usually, only one size of tool will be required for use with a wide range of different pipe 'sizes.
In addition to its primary purpose of chamfering pipe ends, the tool of the present invention may be used for chamfering other products if desired. Thus, the tool can be used for chamfering edges of sheet material, for example formica sheet material. Generally, the tool may be used for chamfering the edge of any type of material such for example as any metal, any wood or any plastics material. As indicated above, the material may be in sheet or pipe form, or it may be in any other suitable and appropriate shape. Where the material is in pipe form, then the pipes may be such as to be fitted in high or low pressure piping systems. If the blades used in the tool are to be reversible, replaceable or interchangeable, then the blades may be mounted in reversible, replaceable or interchangeable heads.

Claims

1. A tool or chamfering an end of a pipe , which tool comprises a hand holdable body portion, a head portion, and a chamfering blade mounted in the head portion, the blade being provided with a notch for receiving the end of the pipe to be chamfered.
2. A tool according to claim 1 in which the blade is mounted between a pair of jaw members which form part of the head portion and which receive the end of the pipe to be chamfered.
3. A tool according to claim 1 or claim 2 in which the blade is a fixed blade.
4. A tool according to claim 1 or claim 2 in which the blade is a replaceable blade, a reversible blade, an interchangeable blade, or an adjustable blade.
5. A tool according to any one of the preceding claims in which the head portion includes an abutment member for pressing against the end of the pipe to be chamfered.
6. A tool according to claim 5 in which the abutment member is a rod member.
7. A tool according to any one of the preceding claims in which the body portion has a neck part adjacent the head portion and a bulbous end part formed as a extension of the neck part.
8. A tool according to any one of the preceding claims in which the body portion has an aperture by which the tool can be hung when it is not in use.
9. A tool according to claim 8 in which the aperture is positioned at the end of the body portion remote from the head portion.
10. A tool according to any one of the preceding claims in which the body portion and the head portion are integrally moulded together from a plastics material, and in which the blade is a metal blade.
PCT/GB1991/001191 1990-07-19 1991-07-18 A tool for chamfering an end of a pipe WO1992001527A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB909015856A GB9015856D0 (en) 1990-07-19 1990-07-19 A tool for chamferring an end of a pipe
GB9015856.9 1990-07-19
GB909021012A GB9021012D0 (en) 1990-09-27 1990-09-27 A tool for chamferring an end of a pipe
GB9021012.1 1990-09-27

Publications (1)

Publication Number Publication Date
WO1992001527A1 true WO1992001527A1 (en) 1992-02-06

Family

ID=26297351

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001191 WO1992001527A1 (en) 1990-07-19 1991-07-18 A tool for chamfering an end of a pipe

Country Status (2)

Country Link
AU (1) AU8190591A (en)
WO (1) WO1992001527A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2883498A1 (en) * 2005-03-24 2006-09-29 Jean Marie Callet Manual screwdriver-plane tool, for chamfering or grinding outer ends of tubes or for rapid (un)screwing, has exocentric turning handle and comprises screwdriver with round guiding shaft and cruciform tip
US7963198B2 (en) * 2003-05-13 2011-06-21 Miguel Friedenbach Tool for cutting used containers of recyclable plastic material into ribbons
US20120159788A1 (en) * 2010-12-24 2012-06-28 Shanghai Easy-Use Tools Enterprise Co., Ltd. Pipe cutter with chamfering device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468475A (en) * 1946-06-18 1949-04-26 Frederick P Willcox Chamfering tool
DE2518187A1 (en) * 1975-04-24 1976-11-04 Beck August Burr removing tool for tube ends - has internal and external combined concentric multi tooth chamfering cutters
FR2342815A1 (en) * 1976-03-03 1977-09-30 Vergnaud Gilbert Tool for chamfering and rounding off tube and bar - has cylindrical body with stems carrying demountable cutters secured by screws
EP0152659A1 (en) * 1984-02-13 1985-08-28 The Stanley Works Limited A trimming device
DE9005799U1 (en) * 1990-05-22 1990-07-26 Huang, Te-Chien, Taichung City, Tw
WO1991002631A1 (en) * 1989-08-12 1991-03-07 Excalibur Hand Tools Limited Pipe end dressing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468475A (en) * 1946-06-18 1949-04-26 Frederick P Willcox Chamfering tool
DE2518187A1 (en) * 1975-04-24 1976-11-04 Beck August Burr removing tool for tube ends - has internal and external combined concentric multi tooth chamfering cutters
FR2342815A1 (en) * 1976-03-03 1977-09-30 Vergnaud Gilbert Tool for chamfering and rounding off tube and bar - has cylindrical body with stems carrying demountable cutters secured by screws
EP0152659A1 (en) * 1984-02-13 1985-08-28 The Stanley Works Limited A trimming device
WO1991002631A1 (en) * 1989-08-12 1991-03-07 Excalibur Hand Tools Limited Pipe end dressing device
DE9005799U1 (en) * 1990-05-22 1990-07-26 Huang, Te-Chien, Taichung City, Tw

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7963198B2 (en) * 2003-05-13 2011-06-21 Miguel Friedenbach Tool for cutting used containers of recyclable plastic material into ribbons
FR2883498A1 (en) * 2005-03-24 2006-09-29 Jean Marie Callet Manual screwdriver-plane tool, for chamfering or grinding outer ends of tubes or for rapid (un)screwing, has exocentric turning handle and comprises screwdriver with round guiding shaft and cruciform tip
US20120159788A1 (en) * 2010-12-24 2012-06-28 Shanghai Easy-Use Tools Enterprise Co., Ltd. Pipe cutter with chamfering device

Also Published As

Publication number Publication date
AU8190591A (en) 1992-02-18

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