LU81255A1 - METHOD FOR SHARPENING OR SHARPENING BLADES - Google Patents

Description

; ? .LOU.01 / LU

! BL-2650 Descriptive memorandum filed in support of the patent application for: SHARPENING OR SHARPENING OF BLADES.

formed by

Jean-Marie LOÜYS in 4000 Liège, Belgium.

The present invention relates to a method of sharpening or sharpening blades, in particular disposable razor blades.

! We know that a lot of research has been done to develop so-called disposable razor blades.

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By razor blades is meant to throw away blades! * interchangeable can be mounted in a razor designed for this purpose or blades permanently mounted on a razor i throw away or even blades mounted on a support; small dimensions that can be inserted or detached from a razor.

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These blades can be either simulated or multiule j \ and are generally made of a special steel allowing? t; a very precise affunement offering remarkable cutting qualities.

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Generally, after a number of successive uses, these blades are dull and need to be replaced.

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The object of the present invention is to provide y.; '....

a process making it possible to sharpen or sharpen a blade having undergone a mechanical prior sharpening or to re-sharpen or sharpen 1-'ϊ :: - ηΛ a dull blade.

The process of the invention can be repeated several times on the same blade and makes it possible to extend the duration of use thereof.

Although reference is made to 'razor blades, it should be understood that the invention is also applicable gäipgf' · / to other devices or tools with blades for sharpening ÎLÎVLy: or sharpening. - ·· '· .-

The method according to the invention is characterized in that the blade to be sharpened or sharpened is disposed between two electrodes connected to a source of direct current, in a solution comprising at least one of the constituents: chloroxylenol and / or anionic detergent.

In the case of an application to razor blades, it has been found that by making a bath containing the constituents: chloroxylenol ^ -, 9 g; aromatic pine oil; isopropanol, soap, '

Sodium laurylsuliate, as well as water to bring to "100 g, • one can ootient a suitable efiet when subjecting the blades ·" .ÿ -: '-' · '"placed between two unassailable electrodes for a period on the order of 1 to minutes at a DC voltage.

Although the Applicant does not intend to limit himself to any theoretical explanation of the phenomenon which occurs under the inuic conditions, it is assumed to be the first of the constituents acting as an oxycant, in the presence of the other constituents.

performs an electrolyte function, performs under the effect of ei eccronyse a surface treatment on the edge of the. ·. ·. ·: ·. * * - · '· / blade. ''

By repeating the indicated operation several times, it is possible to obtain excellent results making it possible to reuse the slide after treatment.

For the execution of the method, it is advantageous / to place the razor in a container of suitable shape containing two electrodes connected to a source of direct current, which is constituted for example by a battery.

Advantageously, switches are provided in the circuit to close it under the effect of the weight of the

razor when placed in the container, the circuit can IISîVIîI

be open after a certain operating time by any suitable means, for example a time delay device.

The indicated solution is preferably diluted to; 5 ml of solution per 75 l of drinking water.

The invention will be described in more detail using ur. diagram representing a device suitable for implementing the method and an example of practice given by way of illustration but without any limiting character.

The test was carried out on razor blades.

paired with the Gillette G2 type and allowed for $ 0 shaves j; : consecutive while keeping a perfect state of cut.

In Figures 1 and 2 there is shown respectively a front view and a side view of a suitable device.

This device consists of a container carrying the general nozzle 1, of generally any shape, which. preferably, however, will be rectangular for reasons i-ncrml-rement. This container consists of a rrsrr.i ^ -re y1 ·. · '. * *; ·. .

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bedroom 2 and a second bedroom 3 separated by a wall h.

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Lc- ^ s the chamber 2 is arranged a source this continuous current 5,. ·. '· /. , y constituted for example by a pile of h, 5 volts of which the two - v * - - '··; · * y.' · * '·, -i. .

poles are respectively connected to electrodes 6 and 7 arranged in compartment 3- Between the respective terminals of the battery 5 and the electrodes 6 and 7, switches 8 and 9 have been interposed · The distance between the electrodes 6 and 7 is sufficient for the razor 10 carrying the twin blades to be inserted therebetween. The container can be closed by a lid 11.

The electrodes are made of an unalterable material resistant to the solution used.

73 ml of drinking water are introduced into the chamber.

and 3 nil of DETTOL of the composition: chlor oxylenol '. ^, 9 g -. ··· '01. pini aromaticum - isopropanolum - sapo - Natrii laurylsulfas -saccharum ustum - Aqua ad 100 g.

The following readings are initially noted, scale 0.3 reading 0, C7 volts scale 10C u reading 20 u amps after 10 minutes scale 0.3 reading 0.13 volts scale 100 υ reading Αό u amps

We leave the isoir and establish current I.1.

•. ·:. ·.

r, <electric in the solution by closing the switches.

The duration of the treatment is 6 minutes. The values recorded are: scale 0.3 reading 0, ^ 3 volts bottom of container scale 30C œA. Reading bottom of scale! scale 0.3 reading 0.6 volts at the surface 3 scale 300 œA reading bottom of scale -% “·.>; · '

After 6 minutesj leaving the rasc-ir iar.s the Γ • -, · · solution, the electric current is interrupted and we note -.JC ': ·

Jf at this time the following readings: 1 ·. · - 'scale 1 V. reading 0.10 volts bottom of container scale 100 v reading 34 u amp · 1¾¾¾¾¾¾ scale 1 V. reading 0.25 volts at surface 1' ' scale 100 y reading 92 v ampere on the surface

To maintain an adequate sharpening or sharpening of the blade, the treatment can be repeated after h or 5 shaves.

The electrical measurements carried out were with imprecise equipment and are subject to correction.

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The phenomenon that occurs has not been elucidated there '. , by the applicant and could also resemble an electrifying effect that can attract the hair of the beard. -

However, tests carried out on other utensils and tools intended for uses other than shaving also make it possible to observe a better quality of sharpening.

The invention is therefore not specifically limited to the use of sharpening a razor blade.

It should in particular be noted that the treatment as described can also be applied to razor blades: blows in order to constitute a final treatment of these. ......

Indeed, we observe that in the manufacturing process, ·· 'variations in the quality of the blades occur regularly, whatever care is taken to sharpen them.

The invention could therefore advantageously be applied with a view to standardizing the quality of the new blades placed on the market.

Although we have described execution farms which are particularly preferred by the invertier, it should: i be yours Seen g.:· understood that many variations and adaptations are possible. • bp ·· - ;. ·; while remaining within the scope of this invention. This is how in · ''. · · :. . *. *; particular, the nature of the constituents of the bath is in no way .- '1/1

Claims (4)

1. Method of sharpening or sharpening blades, in particular razor blades to be thrown away, in particular blades having undergone a mechanical prior sharpening or blades to be resharpened or resharpened, characterized in that the blade to be sharpened or to be sharpened is placed between two electrodes connected to a "direct current" source, in a solution comprising at least one of the constituents: / chloroxylenol and / or anionic detergent. / · 2. Method according to claim 1 characterized in that one uses · a bath containing the constituents: chloroxylenol A, 9 g, aromatic pine oil; isopropanol, soap, sodium lauryl sulfate, as well as water to bring to 100 g, diluted at a rate of 9 ml for 75 ml of water by subjecting the lar.es placed between two unassailable electrodes during a cure of the order from 1 to 15 minutes at a continuous voltage of ^, 5 volts. 3 · A method according to any of claims .1 o.y 2, characterized in that the operation is repeated several times :::. that the blade requires resuscitation or resharpening. i ·:? ··.:. ·: ·· - • i, -, -, r- Method according to any one of claims 1 to 3, characterized in that the razor is placed in a container of suitable shape containing two electrodes connected to a source of direct current, yes is constituted r-ar a battery. 5 · A method according to claim k characterized in that switches feel provided in the circuit, to close it under the effect of the weight of the razor when it is placed in .1 ///:-./ the container, the circuit being open after a certain time this / .Vor* windowing by any appropriate means, such as a time delay device. / ------ C — 71/1