GB2150480A - A device for tapering or chamfering wooden stakes - Google Patents

A device for tapering or chamfering wooden stakes Download PDF

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Publication number
GB2150480A
GB2150480A GB08331731A GB8331731A GB2150480A GB 2150480 A GB2150480 A GB 2150480A GB 08331731 A GB08331731 A GB 08331731A GB 8331731 A GB8331731 A GB 8331731A GB 2150480 A GB2150480 A GB 2150480A
Authority
GB
United Kingdom
Prior art keywords
housing
blade
cutting
cutting edge
plane
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.)
Granted
Application number
GB08331731A
Other versions
GB8331731D0 (en
GB2150480B (en
Inventor
Peter Duhn Petersen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08331731A priority Critical patent/GB2150480B/en
Priority to DE19833343518 priority patent/DE3343518A1/en
Priority to FR8319308A priority patent/FR2555932B1/en
Priority to NL8304160A priority patent/NL8304160A/en
Publication of GB8331731D0 publication Critical patent/GB8331731D0/en
Publication of GB2150480A publication Critical patent/GB2150480A/en
Application granted granted Critical
Publication of GB2150480B publication Critical patent/GB2150480B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/32—Manufacture or reconditioning of specific semi-finished or finished articles of tapered poles, e.g. mine props

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Drilling Tools (AREA)

Abstract

A device for tapering or chamfering of wooden stakes, for example, fence posts, comprises a tubular housing (1) with an internal cone, which housing can rotate on the cone axis (8) and has at least one cutting blade (5) which extends through a slit (4) in the housing wall so that its cutting edge (7) is situated in the interior of the housing (1). The cutting bevel of each cutting blade (5), i.e. the surface which, together with one of the main surfaces of the blade, forms the cutting edge (7), is generally at right angles to a plane through the cone axis (8) and the cutting edge (7) of the blade. This enables the bolts (6) fixing the cutting blade to the housing to be placed close to the cutting edge even with large housing diameters. <IMAGE>

Description

SPECIFICATION A device for tapering or chamfering of stakes The present invention relates to a device for tapering or chamfering of stakes, and of the nature stated in the introduction of the claim.
With such a device the stake end to the tapered is introduced into the widest end of the tubular housing. While the housing rotates, the cutting blade or blades will remove chips from the stake end, thus allowing it constantly to be moved farther into the housing until the taper required has been produced.
A device of the said nature is known from Danish patent application No. 1808/81 where the grinding bevel of the blade, i.e. the bevelled surface which together with one of the main surfaces of the blade forms the cutting edge, forms an angle of approx. 45" to a plane through the cone axis and the cutting edge, while the plane of the cutting blade chiefly forms a right angle to the said plane through the cone axis and the cutting edge. The fact is that the screws or bolts fixing the cutting blade to the housing, are chiefly parallel to the said plane.
In devices used for tapering or chamfering of stakes with a relatively large diameter, for example more than approx. 80mm, the effect is that the bolts closest to the widest end of the housing will be so far removed from the cutting edge that the cutting blade cannot be held securely.
According to the present invention, the embodiment specified in the claim is proposed. The result is that also with large housing diameters the bolts can be placed close to the cutting edge.
In what follows, the invention will be explained further in connection with the drawing where Figure 1 shows a section at right angles to the axis through a known device, and Figure 2 shows the same, but through a device according to the present invention.
As can be seen in Figure 1, the known device comprises a tubular housing 1 with an internal cone. At the narrow end the housing has a bore for a rotary shaft to which the housing can be fixed by one or more screws.
The housing 1 has two slits 4 running along diametrically opposed generatrices. A cutting blade 5 extends through either slit 4. The cutting blades are fixed to the wall of housing by means of bolts 6 in such a way that the cutting edge 7 of the blade is situated in the interior of the housing 1. In this known device the cutting blades 5 are placed so that the plane of either cutting blade is chiefly at right angles to a plane through the cone axis 8 and the cutting edge 7 of the blade. However, the cutting blades 5 are withdrawn slightly, viewed in the direction of rotation 9 from the said plane.
With the known positioning of the cutting blades, the device is not suitable for machining of stakes with large diameters. As shown by a dotted line in Figure 1, the effect of an increasing diameter is that the bolts 6 will have to be placed farther and farther away from the cutting edge 7 so that the cutting blade 5 is held less securely and may be forced away from the slit 4 during operation of the device.
Figure 2 shows a corresponding section through a device according to the invention. In this device, which otherwise corresponds to the one shown in Figure 1, the said disadvantage has been avoided in that the plane of the cutting blade 5 forms an angle of approx. 45" to the plane through the cone axis 8 and the cutting edge 7 of the blade. The result is that there is enough material close to the cutting edge 7 for the bolt 6 to be screwed into the housing wall 1 irrespective of its diameter.
1. A device for tapering or chamfering of wooden stakes, for example, fence posts, and comprising a tubular housing (1) with an internal cone, which housing can rotate on the cone axis (8) and has at least one cutting blade (5) which extends through a slit (4) in the housing wall so that its cutting edge (7) is situated in the interior of the housing (1), characterised in that the cutting bevel of either cutting blade (5), i.e. the surface which, together with one of the main surfaces of the blade, forms the cutting edge (7), is chiefly at right angles to a plane through the cone axis (8) and the cutting edge (7) of the blade.
2. A device for tapering or chamfering of wooden stakes and substantially as hereinbefore described and as shown in Figure 2 of the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A device for tapering or chamfering of stakes The present invention relates to a device for tapering or chamfering of stakes, and of the nature stated in the introduction of the claim. With such a device the stake end to the tapered is introduced into the widest end of the tubular housing. While the housing rotates, the cutting blade or blades will remove chips from the stake end, thus allowing it constantly to be moved farther into the housing until the taper required has been produced. A device of the said nature is known from Danish patent application No. 1808/81 where the grinding bevel of the blade, i.e. the bevelled surface which together with one of the main surfaces of the blade forms the cutting edge, forms an angle of approx. 45" to a plane through the cone axis and the cutting edge, while the plane of the cutting blade chiefly forms a right angle to the said plane through the cone axis and the cutting edge. The fact is that the screws or bolts fixing the cutting blade to the housing, are chiefly parallel to the said plane. In devices used for tapering or chamfering of stakes with a relatively large diameter, for example more than approx. 80mm, the effect is that the bolts closest to the widest end of the housing will be so far removed from the cutting edge that the cutting blade cannot be held securely. According to the present invention, the embodiment specified in the claim is proposed. The result is that also with large housing diameters the bolts can be placed close to the cutting edge. In what follows, the invention will be explained further in connection with the drawing where Figure 1 shows a section at right angles to the axis through a known device, and Figure 2 shows the same, but through a device according to the present invention. As can be seen in Figure 1, the known device comprises a tubular housing 1 with an internal cone. At the narrow end the housing has a bore for a rotary shaft to which the housing can be fixed by one or more screws. The housing 1 has two slits 4 running along diametrically opposed generatrices. A cutting blade 5 extends through either slit 4. The cutting blades are fixed to the wall of housing by means of bolts 6 in such a way that the cutting edge 7 of the blade is situated in the interior of the housing 1. In this known device the cutting blades 5 are placed so that the plane of either cutting blade is chiefly at right angles to a plane through the cone axis 8 and the cutting edge 7 of the blade. However, the cutting blades 5 are withdrawn slightly, viewed in the direction of rotation 9 from the said plane. With the known positioning of the cutting blades, the device is not suitable for machining of stakes with large diameters. As shown by a dotted line in Figure 1, the effect of an increasing diameter is that the bolts 6 will have to be placed farther and farther away from the cutting edge 7 so that the cutting blade 5 is held less securely and may be forced away from the slit 4 during operation of the device. Figure 2 shows a corresponding section through a device according to the invention. In this device, which otherwise corresponds to the one shown in Figure 1, the said disadvantage has been avoided in that the plane of the cutting blade 5 forms an angle of approx. 45" to the plane through the cone axis 8 and the cutting edge 7 of the blade. The result is that there is enough material close to the cutting edge 7 for the bolt 6 to be screwed into the housing wall 1 irrespective of its diameter. CLAIMS
1. A device for tapering or chamfering of wooden stakes, for example, fence posts, and comprising a tubular housing (1) with an internal cone, which housing can rotate on the cone axis (8) and has at least one cutting blade (5) which extends through a slit (4) in the housing wall so that its cutting edge (7) is situated in the interior of the housing (1), characterised in that the cutting bevel of either cutting blade (5), i.e. the surface which, together with one of the main surfaces of the blade, forms the cutting edge (7), is chiefly at right angles to a plane through the cone axis (8) and the cutting edge (7) of the blade.
2. A device for tapering or chamfering of wooden stakes and substantially as hereinbefore described and as shown in Figure 2 of the accompanying drawing.
GB08331731A 1983-11-28 1983-11-28 A device for tapering or chamfering wooden stakes Expired GB2150480B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB08331731A GB2150480B (en) 1983-11-28 1983-11-28 A device for tapering or chamfering wooden stakes
DE19833343518 DE3343518A1 (en) 1983-11-28 1983-12-01 DEVICE FOR SHARPENING OR TIPING POST, PILE OR THE LIKE.
FR8319308A FR2555932B1 (en) 1983-11-28 1983-12-02 DEVICE FOR POINT TRIMMING OR BEVELING POLE
NL8304160A NL8304160A (en) 1983-11-28 1983-12-03 Apparatus for tapping or chamfering poles.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB08331731A GB2150480B (en) 1983-11-28 1983-11-28 A device for tapering or chamfering wooden stakes
DE19833343518 DE3343518A1 (en) 1983-11-28 1983-12-01 DEVICE FOR SHARPENING OR TIPING POST, PILE OR THE LIKE.
FR8319308A FR2555932B1 (en) 1983-11-28 1983-12-02 DEVICE FOR POINT TRIMMING OR BEVELING POLE
NL8304160A NL8304160A (en) 1983-11-28 1983-12-03 Apparatus for tapping or chamfering poles.

Publications (3)

Publication Number Publication Date
GB8331731D0 GB8331731D0 (en) 1984-01-04
GB2150480A true GB2150480A (en) 1985-07-03
GB2150480B GB2150480B (en) 1986-11-19

Family

ID=27433035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08331731A Expired GB2150480B (en) 1983-11-28 1983-11-28 A device for tapering or chamfering wooden stakes

Country Status (4)

Country Link
DE (1) DE3343518A1 (en)
FR (1) FR2555932B1 (en)
GB (1) GB2150480B (en)
NL (1) NL8304160A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT465U1 (en) * 1994-11-22 1995-11-27 Fuerlinger August DETACHING MACHINE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE220105C (en) *
NL7406810A (en) * 1973-05-23 1974-11-26

Also Published As

Publication number Publication date
FR2555932B1 (en) 1988-08-26
DE3343518A1 (en) 1985-06-13
FR2555932A1 (en) 1985-06-07
GB8331731D0 (en) 1984-01-04
GB2150480B (en) 1986-11-19
NL8304160A (en) 1985-07-01

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PCNP Patent ceased through non-payment of renewal fee