FR2480573A1 - Cigar-cutter with pivoting blade - has concave cutting edge on logarithmic spiral centred on pivot axis - Google Patents
Cigar-cutter with pivoting blade - has concave cutting edge on logarithmic spiral centred on pivot axis Download PDFInfo
- Publication number
- FR2480573A1 FR2480573A1 FR8008851A FR8008851A FR2480573A1 FR 2480573 A1 FR2480573 A1 FR 2480573A1 FR 8008851 A FR8008851 A FR 8008851A FR 8008851 A FR8008851 A FR 8008851A FR 2480573 A1 FR2480573 A1 FR 2480573A1
- Authority
- FR
- France
- Prior art keywords
- cigar
- blade
- cutter
- cutting edge
- logarithmic spiral
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F13/00—Appliances for smoking cigars or cigarettes
- A24F13/24—Cigar cutters, slitters, or perforators, e.g. combined with lighters
- A24F13/26—Cigar cutters, slitters, or perforators, e.g. combined with lighters formed as pocket devices
Landscapes
- Knives (AREA)
Abstract
Description
La présente invention concerne des perfectionnements à un coupecigare. The present invention relates to improvements to a cigar cutter.
On connaît déjà des instruments permettant de couper la pointe d'un cigare. En général ils sont constitués d'une lame se déplaçant dans son propre plan, la partie tranchante étant rectiligne. Ils peuvent aussi comporter deux lames agencées pour couper le cigare suivant un mouvement circulaire tout en convergeant l'une vers l'autre. Tous ces instruments présentent, du fait de leur lame tranchante rectiligne, un mme défaut ils écrasent le cigare au point d'impact de la lame. We already know instruments to cut the tip of a cigar. In general they consist of a blade moving in its own plane, the cutting portion being rectilinear. They may also have two blades arranged to cut the cigar in a circular motion while converging towards one another. All these instruments have, because of their straight cutting blade, the same defect they crush the cigar at the point of impact of the blade.
Aussi la présente invention concerne un coupe cigare qui, du fait de la forme de sa partie tranchante, respecte l'intégrité de la cape de part et d'autre de la ligne de coupe et n'écrase pas l'intérieur du cigare. En effet, la section de coupe obtenue en utilisant le dispositif suivant l'invention ne présente aucune compression, le bord correspondant au point d'impact de la lame étant lui-même très net. Also the present invention relates to a cigar cutter, because of the shape of its cutting portion, respects the integrity of the cape on either side of the cutting line and does not crush the inside of the cigar. Indeed, the cutting section obtained using the device according to the invention has no compression, the edge corresponding to the point of impact of the blade is itself very clear.
Pour cela le/-cigPare comporte un alésage de réception du cigare et une lame montée pivotante autour d'un axe fixe par rapport audit alésage dans un plan perpendiculaire à celui-ci,-la partie tranchante de ladite lame étant une ligne courbe dont la concavité est tournée vers l'axe de rotation. For this the / -cigPare comprises a receiving bore of the cigar and a pivotally mounted blade about a fixed axis relative to said bore in a plane perpendicular thereto, -the cutting portion of said blade being a curved line whose concavity is turned towards the axis of rotation.
Plus particulièrement le profil de la lame sera celui d'une spirale logarithmique. More particularly, the profile of the blade will be that of a logarithmic spiral.
En effet on a constaté que lorsque on fait tourner une lame droite autour d'un axe de rotation, celle-ci sectionne les morceaux constituant l'intérieur du cigare sous des angles différents suivant qu'ils sont proches ou éloignés du centre de rotation. Indeed, it has been found that when a straight blade is rotated about an axis of rotation, it cuts the pieces constituting the interior of the cigar at different angles depending on whether they are near or far from the center of rotation.
Pour obtenir une coupe franche, il est nécessaire que l'angle d'attaque soit constant, c'est-à-dire qu'en tout point de la trajectoire de la lame, la tangente à la courbe en ce point fasse un angle constant avec le rayon issu de l'axe de rotation. Cette propriété est celle d'une spirale logarithmique. To obtain a clean cut, it is necessary that the angle of attack is constant, that is to say that at any point of the trajectory of the blade, the tangent to the curve at this point makes a constant angle with the radius coming from the axis of rotation. This property is that of a logarithmic spiral.
La figure 1 montre un coupe-cigare suivant l'invention. Figure 1 shows a cigar cutter according to the invention.
Le schéma 2 explique la forme de la lame. Figure 2 explains the shape of the blade.
La lame t est montée dans un bloc 2 dont la partie supérieure 3 protège la lame et donne à l'utilisateur une prise pour effectuer la coupe du cigare. The blade t is mounted in a block 2, the upper portion 3 protects the blade and gives the user a socket for cutting the cigar.
Cette lame 1 est montée rotative autour de l'axe 4. Dans le bloc 2 un alésage transversal 5 est ménagé pour recevoir le cigare et une fente verticale 6 correspondant au logement de la lame est prévue pour traverser le dit alésage. This blade 1 is rotatably mounted about the axis 4. In the block 2 a transverse bore 5 is provided to receive the cigar and a vertical slot 6 corresponding to the housing of the blade is provided to pass through said bore.
Suivant la figure 2, on voit plus particulièrement la lame 1 et la forme de sa partie tranchante 7 . En pointillé est représentée la spirale logarithmique correspondante. According to FIG. 2, the blade 1 and the shape of its cutting portion 7 are more particularly seen. In dotted line is represented the corresponding logarithmic spiral.
La formule générale de la spirale logarithmique étant t = a e sa dérivée est #' = axe
La cotanaente en tout point de la tourbe est
The cotanaente at any point of the peat is
<tb> cotg <SEP> o( <SEP> 0 < <SEP> = <SEP> = <SEP> akess
<tb> <SEP> = <SEP> k,
<tb> c'est à dire une constante. La valeur dé l'angle est ainsi constante quelle que soit la position de la lame.<tb> cotg <SEP> o (<SEP> 0 <<SEP> = <SEP> = <SEP> akess
<tb><SEP> = <SEP> k,
<tb> that is a constant. The value of the angle is thus constant regardless of the position of the blade.
On a remarqué que, pour obtenir un résultat optimum, l'angle qui est l'angle d'attaque de la lame ne doit pas etre inférieur à 350. It has been noted that, to obtain an optimum result, the angle which is the angle of attack of the blade must not be less than 350.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8008851A FR2480573A1 (en) | 1980-04-21 | 1980-04-21 | Cigar-cutter with pivoting blade - has concave cutting edge on logarithmic spiral centred on pivot axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8008851A FR2480573A1 (en) | 1980-04-21 | 1980-04-21 | Cigar-cutter with pivoting blade - has concave cutting edge on logarithmic spiral centred on pivot axis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2480573A1 true FR2480573A1 (en) | 1981-10-23 |
| FR2480573B1 FR2480573B1 (en) | 1982-08-13 |
Family
ID=9241132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8008851A Granted FR2480573A1 (en) | 1980-04-21 | 1980-04-21 | Cigar-cutter with pivoting blade - has concave cutting edge on logarithmic spiral centred on pivot axis |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2480573A1 (en) |
-
1980
- 1980-04-21 FR FR8008851A patent/FR2480573A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2480573B1 (en) | 1982-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |