EP0293512A1 - A device for honing razor blades - Google Patents
A device for honing razor blades Download PDFInfo
- Publication number
- EP0293512A1 EP0293512A1 EP87116388A EP87116388A EP0293512A1 EP 0293512 A1 EP0293512 A1 EP 0293512A1 EP 87116388 A EP87116388 A EP 87116388A EP 87116388 A EP87116388 A EP 87116388A EP 0293512 A1 EP0293512 A1 EP 0293512A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- razor
- shroud
- water
- honing
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/02—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for sharpening or cleaning cutting tools, e.g. files
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
- B24D15/10—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of safety-razor blades
Definitions
- This invention is concerned with the honing of edge cutting tools, and in particular, with the blades of safety razors, with the emphasis being placed upon twin-bladed razors.
- the present invention aims principally to provide a means of enhancing the life of such blades and at the same time, brings a welcome improvement in blade hygiene.
- a base plate including means adapted to engage a safety razor with blade in place; a shroud into which the head of the mounted razor extends, and means to inject a stream of water into the shroud to flow along the head of the razor in the plane of the blade(s).
- a header chamber receives the water and there is an opening or openings in a common wall between the shroud and the chamber for passage of the water to the blade(s) of the mounted razor.
- the device consists of a base plate 10 on which there is a clip 12 for mounting a safety razor 14; a shroud 15 into which the head 16 of the razor 14 extends; a header chamber 18; a common wall 20 between the chamber 18 and the shroud 15; and an opening 22 in the wall 20 which is in the form of a slot running parallel to the plane of the blades 30.
- a flange 24 is provided to create a stop to locate the razor 14 properly.
- a rubber cushion 26 is attached to the header chamber 18. It has a central hole 28 that is in alignment with a hole in the header chamber 18. In use, the rubber pad 26 is pressed firmly against a water tap (not shown). Water from the tap flows through the hole 28, into the header chamber 18 and thence through the opening 22. Water emerging from the opening 22 impinges on the blades 30 of the razor in a concentrated stream and flows across the blades to exercise a honing action which tends to maintain their acuity. In addition, the passage of water through the shroud 15 will tend to force out detritus which may have accumulated in the space between the blades 30.
- the principle of operation of the device is essentially similar to that which will enable the constant dripping of water to wear away a stone.
- the blades are always drawn across the skin in a uniform direction and this tends to cause the very keen edge of the blades to be slowly bent back until the cutting angle of the blades has been so altered that the blade now feels blunt.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Dry Shavers And Clippers (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
Description
- This invention is concerned with the honing of edge cutting tools, and in particular, with the blades of safety razors, with the emphasis being placed upon twin-bladed razors.
- When early safety razors made use of flexible, twin-edged blades, it was a relatively common practice to hone the blades by running them around the inside of a tumbler of water. This operation is however, not effective with the modern twin-bladed razor, with its cutting formations embedded in a rigid matrix.
- With the advent of the twin-bladed razor, it has become common practice for the blades to be thrown away as soon as they become slightly blunt and even more recently, the totally disposable razor has been made available on the market.
- It was found that detritus tends to accumulate and eventually clog the space between the blades and this contributes to the rapid degradation of the blade and generally to an unhygienic state of affairs. The blade manufacturers have resorted to various mechanical arrangements intended to aleviate the latter mentioned problem but these have proved only partially effective.
- The present invention aims principally to provide a means of enhancing the life of such blades and at the same time, brings a welcome improvement in blade hygiene.
- Therefore, according to the invention, there is provided a base plate including means adapted to engage a safety razor with blade in place; a shroud into which the head of the mounted razor extends, and means to inject a stream of water into the shroud to flow along the head of the razor in the plane of the blade(s).
- Further according to the invention, a header chamber receives the water and there is an opening or openings in a common wall between the shroud and the chamber for passage of the water to the blade(s) of the mounted razor.
- In order to facilitate further understanding of the invention, one preferred embodiment will now be described in detail with reference to the accompanying drawing which is a side elevation, partly sectioned. In the drawing, the device consists of a
base plate 10 on which there is aclip 12 for mounting asafety razor 14; ashroud 15 into which thehead 16 of therazor 14 extends; aheader chamber 18; acommon wall 20 between thechamber 18 and theshroud 15; and anopening 22 in thewall 20 which is in the form of a slot running parallel to the plane of the blades 30. Aflange 24 is provided to create a stop to locate therazor 14 properly. - A
rubber cushion 26 is attached to theheader chamber 18. It has a central hole 28 that is in alignment with a hole in theheader chamber 18. In use, therubber pad 26 is pressed firmly against a water tap (not shown). Water from the tap flows through the hole 28, into theheader chamber 18 and thence through the opening 22. Water emerging from the opening 22 impinges on the blades 30 of the razor in a concentrated stream and flows across the blades to exercise a honing action which tends to maintain their acuity. In addition, the passage of water through theshroud 15 will tend to force out detritus which may have accumulated in the space between the blades 30. - The principle of operation of the device is essentially similar to that which will enable the constant dripping of water to wear away a stone.
- In shaving, the blades are always drawn across the skin in a uniform direction and this tends to cause the very keen edge of the blades to be slowly bent back until the cutting angle of the blades has been so altered that the blade now feels blunt.
- By passing a stream of water over the blades in the opposite direction, and particularly when under reasonable pressure, the very keen edge is gently bent back to the correct angle and repeated use of the apparatus of the invention will keep this cutting edge properly aligned and honed for a considerable period of time. Tests thus far conducted indicate that the average blade life can be extended to between 18 and 24 months which contrasts favourably with the present 1 to 2 months life expectancy of such blades.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87116388T ATE62170T1 (en) | 1987-06-03 | 1987-11-06 | DEVICE FOR PULLING RAZOR BLADES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA873954A ZA873954B (en) | 1987-06-03 | 1987-06-03 | The honing of razor blades |
ZA873954 | 1987-06-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0293512A1 true EP0293512A1 (en) | 1988-12-07 |
EP0293512B1 EP0293512B1 (en) | 1991-04-03 |
Family
ID=25578867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87116388A Expired - Lifetime EP0293512B1 (en) | 1987-06-03 | 1987-11-06 | A device for honing razor blades |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0293512B1 (en) |
AT (1) | ATE62170T1 (en) |
AU (1) | AU604098B2 (en) |
DE (1) | DE3769140D1 (en) |
ES (1) | ES2022267B3 (en) |
ZA (1) | ZA873954B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0849044A1 (en) * | 1996-12-19 | 1998-06-24 | Fraisa Sa | Process for deburring the edges of a workpiece |
EP0849043A1 (en) * | 1996-12-19 | 1998-06-24 | Ernst Schäublin AG | Process for deburring the cutting edges of a cutting tool |
US6086459A (en) * | 1999-04-07 | 2000-07-11 | Fraisa Sa | Device for deburring edges on an object |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7134935B1 (en) | 2006-03-15 | 2006-11-14 | Julia Grace Papetti | Lubricated razor blade edge sanitizer and sharpener |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2138520A (en) * | 1937-08-16 | 1938-11-29 | Elliot Charles | Razor blade sharpening method and means |
-
1987
- 1987-06-03 ZA ZA873954A patent/ZA873954B/en unknown
- 1987-11-06 DE DE8787116388T patent/DE3769140D1/en not_active Expired - Lifetime
- 1987-11-06 ES ES87116388T patent/ES2022267B3/en not_active Expired - Lifetime
- 1987-11-06 AT AT87116388T patent/ATE62170T1/en not_active IP Right Cessation
- 1987-11-06 EP EP87116388A patent/EP0293512B1/en not_active Expired - Lifetime
-
1988
- 1988-03-15 AU AU13128/88A patent/AU604098B2/en not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2138520A (en) * | 1937-08-16 | 1938-11-29 | Elliot Charles | Razor blade sharpening method and means |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0849044A1 (en) * | 1996-12-19 | 1998-06-24 | Fraisa Sa | Process for deburring the edges of a workpiece |
EP0849043A1 (en) * | 1996-12-19 | 1998-06-24 | Ernst Schäublin AG | Process for deburring the cutting edges of a cutting tool |
US6086459A (en) * | 1999-04-07 | 2000-07-11 | Fraisa Sa | Device for deburring edges on an object |
Also Published As
Publication number | Publication date |
---|---|
ZA873954B (en) | 1988-01-27 |
DE3769140D1 (en) | 1991-05-08 |
ES2022267B3 (en) | 1991-12-01 |
AU604098B2 (en) | 1990-12-06 |
AU1312888A (en) | 1988-12-08 |
EP0293512B1 (en) | 1991-04-03 |
ATE62170T1 (en) | 1991-04-15 |
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