FR2483199A1 - HEAT ROTATING AND ROTATING BRUSH - Google Patents

Abstract

THE SUBJECT OF THE PRESENT INVENTION A CURLING BRUSH OF THE ROTATING AND HEATING TYPE. THE BRUSH INCLUDES A CASING 61 SERVING AS A HANDLE, AN INTERIOR TUBE 62 FIXED ON THE CASING 61, PROJECTING THEREOF AND ROTATING SUPPORT AN EXTERIOR TUBE 63, A RESISTANCE HEATING DEVICE 66 LOCATED IN THE INTERNAL TUBE 62 IN A MANNER A HEATING THE BRUSH 64 SHAPED ON THE OUTER TUBE 63 AND A LOCKING DEVICE PREVENTING THE OUTER TUBE AND THE BRUSH FROM ROTATING AND INCLUDING A SWIVEL BUTTON 79 LOADED BY A SPRING 85 AND PROVIDED WITH A BRAKE PAD 76 DESIGNED TO APPLY AGAINST THE REAR END SURFACE OF THE OUTER TUBE 63 TO PREVENT IT FROM ROTATING. APPLICATION TO THE FIELD OF HAIRDRESSING.

Description

2 483199

  HEAT ROTATING BRUSH AND ROTATING.

  The present invention relates to a curling brush of the heating type,

  rotating, lockable, which is usable for styling and curling a

  Velure. More particularly, the invention relates to a drum device and brake shoe used as a locking mechanism in a heating type curling brush, rotating and lockable.

  Curling brushes of the heated and rotating type generally include

  a housing serving as a handle, an inner tube fixed by its part

  the front part of the handle and protruding from it, a

  heating element placed inside the inner tube and connected

  a swivel cord, and an outer tube rotatably supported by

  said inner tube and carrying on its outer surface a circular brush

  laire, which is provided with protrusions or bristles coming from material or removable.

  The inner tube is attached to the handle using a bolt or pin system, while the outer tube is held in the handle by a

  circular guide placed at the front end of the handle and which comes

  bend against a collar provided on the back of the outer tube.

  This collar forms, in cooperation with a voltage-loaded button device, a braking mechanism which keeps the circular brush fixed

  in position or that releases it so that it turns freely.

  According to the present invention, the flange acts as the brake drum and the drum, in which is housed a brake pad, plays the role

brake shoe.

  The outer tube is supported by the inner tube and is

  held captive by a groove, open inward and placed on the front edge of the handle that corresponds to the collar. The front end of the

  outer tube can be supported by the front end of the inner tube.

  The inner tube is in heat conduction relation with the device

  tif heating and the outer tube. The inner tube may be formed of a heat conducting material which transmits sufficient

  heat of the heater to the outer tube to allow for

  to dye temperatures of hair curling. In this respect, it is

2 483199

  appropriate to use certain plastics, aluminum or other heat-conducting materials. The outer tube may be formed of a plastic material when the projections are made of material, or aluminum when the projections are removable. The projections or bristles are preferably formed of plastics material. The heating device is usually constituted by a thermistor with a positive coefficient of

temperature (CPT).

  Known crimping apparatuses of known types, including rotary brushes,

  Heated and lockable elements comprise locking mechanisms in which the flange provided on the rear of the outer tube is provided.

  spaced notches which, in cooperation with a device for ver-

  spring ratchet which is attached either to the handle or to the inner tube

  ture, holding the circular brush in a fixed position, or its release to allow it to rotate freely. These locking mechanisms generally work satisfactorily, but locking can only be done in the notches and not between them. It is therefore useful to have a locking mechanism by means of which a lock can be established in all the positions of the collar. Accordingly, it is an object of the invention to provide an improved locking mechanism suitable for use in brushes

  curling machine, lockable and heated, said mechanism

  putting the user in a position to prevent rotation of the brush in all

  positions without having to turn the brush until it

ring a clicker.

  The locking mechanism according to the invention comprises a spring loaded button which is fixed either on the handle or on the inner tube, or on these two elements forming part of a curling brush of the heated and rotating type, said knob having on its front face a brake pad placed in a position which allows this pad to come into brake contact with the rear face of the outer tube. The rear face of the outer tube is preferably radially striated so as to increase the friction between said tube and the braking buffer;

  which improves the braking or locking effect. According to one

  advantageous embodiment of the present invention, an outer tube is provided

  which is provided with a collar at its rear end.

  The invention will be described hereinafter with reference to such an arrangement of the

outer tube with flange.

  The button is fitted into an opening in the front part of the handle and a spring placed between the button and the inner tube (or a projection provided inside the handle) ensures its preload

  way that the brake pad is applied against the outer tube which is -

  thus kept in a locked position. By pushing the button against the spring, causing the front portion with the brake pad to move in a direction away from the flange, the outer tube can be released so that it can rotate freely. The distance from which the button must be lowered to release the outer tube is much less than what is necessary in locking mechanisms having notches and an elastic latch, since it is sufficient that said distance is just sufficient to eliminate the pressure exerted. on the brake pad,

  this distance being for example 1 mm or less.

  The brake pad is made of a material that is temperature stable

  the brush is heated, and is also wear-resistant. Moreover, this material must have a superficial hardness and

  a coefficient of friction which allows him to come into contact with

  as appropriate with the flange surface and to prevent rotation

  of the tube. In this respect, it is advantageous to use a polyethylene elastomer

  urethane having a Shore A hardness of 85 units. An example of such a material is urethane, sold under the trade designation "MP 1880I" by Stevens Elastomeric and Plastic Products Inc., East Hampton, Mass. USA. When the elastomer has too little hardness, it tends to wear excessively. When the elastomer is too hard, it does not have sufficient friction properties

  to lock the brush in the proper position.

  The tampon is bonded to the button using a suitable type of contact bonding agent, such as the product sold under the trade designation "Pliobond 2030", by the Chemical Department of Goodyear Tire Company.

and Rubber Company, Ashland, Ohio.

  The button can have a variety of shapes and configurations, in

  function of the corresponding curling brush and the con-

  desired ception. The button may have a circular profile or an elongated shape. A preferred design is to give the button an elongate profile that matches that of the surface of the handle, including the portion that holds the collar of the outer tube. The button may be pivotally attached to the interior of the handle by means of projections, or it may be pivotally attached to projections provided at the top of the inner tube, or the two means may be adopted. In all cases, a compression coil spring placed below the back of the button, between the latter and the inner tube, holds the brake pad placed on the button, in frictional contact with the flange face of the outer tube. The button can also be attached to an elastic blade element

  metal which is placed on the inside of the handle. The elastic blade

  metal tick ensures the preload of the knob so that the brake pad

  is held against the flange face of the outer tube.

  Another suitable structure is to use a sliding button that is loaded by spring. The spring-loaded sliding knob is slidable in a guide path on the handle, the spring being oriented parallel to the longitudinal axis of the handle and being located between the back of the knob and a boss provided on the inner surface of the handle. handle. With this arrangement, the spring exerts a preload on the front of the button, on which the brake pad is fixed, that is to say against the

  face of the collar, keeping it locked in position.

  A release is obtained, which allows the outer tube to rotate,

  pushing the button towards the back of the handle.

  The locking mechanism according to the invention can be incorporated into

  a variety of curling brushes of the rotating and heated type, in particular

  bonding brushes having a flanged rotating member. In a suitable example, the inner tube and the outer tube are formed of the same plastic material, and the projections of the brush placed on the outer tube are integrally formed therewith. In another appropriately designed curling brush, the inner plastic tube is replaced by an aluminum tube and is arranged so that the heat

  generated is distributed substantially uniformly in the brush.

  Rotating curling brushes with removable projections or bristles and brushes having a steam generating device are also suitable for use with the locking mechanism

according to the invention.

  Other objects and advantages of the present invention will be apparent from

  reading of the following description and accompanying figures given as

illustrative but not limiting.

  Figure 1 is an exploded perspective view of a vertical mechanism

  rusting according to the present invention.

  Figure 2 is a side sectional view of the locking mechanism

of Figure 1.

2483,199

  Figure 3 is a sectional and end view of the button loaded by

  fate, this figure showing its fixation on the inner tube.

  Figure 4 is an exploded perspective view of the braking mechanism

  swimming according to the invention, wherein the button is sliding.

  Figure 5 is a side sectional view of the locking mechanism

shown in Figure 4.

  Figure 6 is a side sectional view of a curling type curling brush and heated, which has inner and outer tubes of plastic material and which is equipped with the locking mechanism according to

the invention.

  Figure 7 is a side sectional view of a rotating and heated type curling brush, which includes an inner tube of aluminum and

  which is provided with the locking mechanism according to the invention.

  Figure 8 is a side sectional view of a curling brush of the rotating and heated type which has removable projections or bristles and

  which is equipped with the locking mechanism according to the invention.

  Figure 9 is a side sectional view of a curling brush of the rotating and heated type, which includes a steam generator, projections

  or removable bristles and which is equipped with the braking mechanism

vention.

  Figure 10 is an exploded perspective view of the outer tube of

  the curling brush of Figure 8, which has removable projections.

  Figure 11 is a perspective view of projections or bristles

both rounded ends.

  Figure 12 is a perspective view of projections or bristles of triangular profile. Figures 1, 2 and 3 show a locking mechanism

  corresponding to a preferred embodiment of the invention; in this

  nism, the button 1 can pivot on the projections 9 which are nested in

  sockets 10 formed in the inner part of the handle 13.

  Sockets 10 are formed by the upper and lower parts of the

  13 when they are assembled together with the aid of the

  tongue and groove 17 and when held by screws 18.

  Knob 1 is generally rectangular in shape and has sharp corners.

  12 at its rear end and a raised portion 2, the outer profile corresponds to that of the projecting portion 19 provided on the front of the handle 13. The projecting portion 2 has on its underside a notch 3 formed on its width and which fits on the collar

2,483 19 9

  4 of the outer tube 5, to maintain it in a rotational relationship.

  The notch 3 has a profile adapted to that of the channel 14 formed inside and in front of the projecting portion 19 of the handle 13 to maintain the collar 4 of the outer tube 5 of the cylindrical brush in a rotational relation . The button 1 that can be actuated by the user's thumb can be formed of a suitable molding material, which is stable in the

  Terms of use; it is better to use a plastic material.

  The face 6 of the flange 4 may be smooth. However, in a

  ture, a groove constituted by radial grooves 7 is provided,

  as shown in Figure 1, because it creates a greater amount of

  between said face 6 and the brake pad 8.

  In a preferred embodiment, the grooves 7 are distributed over the entire circumference of the face of the flange 4. Any appropriate number of grooves 7 may be provided, but they must not be spaced apart from each other. a distance greater than the width of the brake pad 8 because otherwise there would be no locking without having to rotate the brush until the ridges 7 are in contact with the brake pad 8. It is appropriate to provide 144 radial striations 7, although

  can adopt a greater or lesser number of streaks on the face of the col-

  4. This flange 4 may be formed of any suitable material, including a plastic such as polycarbonate, which is a relatively poor heat conductor. The flange 4 and the outer tube 5 may be integral with each other when the outer tube 5 is formed of a plastic material. However, this does not correspond to the preferred embodiment. It is advantageous to use an outer tube 5

  aluminum which is fixed on the flange 4 by a sleeve assembly.

  These parts can be manufactured in a conventional manner, for example

by injection molding.

  The brake pad 8 fixed on the rear face of the notch 3 formed in the front part of the button 1 consists of an elastomer, preferably polyurethane. It is preferable to place it in the middle third of the width of the button 1. The brake pad 8 is arranged to come into contact with the face of the flange 4 and to block it by friction,

by preventing its rotation.

  At the back of button 1 and on its lower side, there is a

  recess 15 for receiving the upper part of a compression spring

  This spring 16 may be made of any suitable material,

2 483199

  however, it is preferable to use a musical string of 0.40 mm dia-

  metre. The spring 16 must have sufficient strength to hold the armature

  1 of the button 1 so that the brake pad 8 is applied by a preload against the flange face 6 and, if streaks 7 are provided, against said ridges, so that the outer tube 5 is prevented from rotating.

  The base of the button i has a structure consisting of two

  wise 9 who are placed on each side. These bosses 9 act as axes when the button 1 is pivotally fixed in the sockets 10 provided in the inner part of the handle 13. It is also possible to provide sockets instead of the bosses and to fix pivotally the button 1 on bosses provided on the inner tube 11. A push down on the back of the button 1 causes a lifting of the brake pad 8 away from the flange 4, which allows it to turn

freely.

  The slide button 114 shown in FIGS.

  guides 115 which engage in a guiding path provided in the ex-

  front end of the handle 113. The base of the button 114 comprises a boss 121 which receives the front end of a spring 116, placed longitudinally

  on the outer surface of the inner tube 111. This inner tube 111 comprises

  carries a boss 112 which receives the rear end of the spring 116.

  The front face of the button 114 comprises a brake pad 118 fixed in position.

  The spring 116 exerts sufficient tension to subject the button 113 to a preload by pushing it forward against the face 117 of the

  flange 117, thereby preventing the outer tube 120 from rotating.

  The face 117 of the collar 119 may be smooth or have ridges 122, as shown in FIG. 4. Rotation is made possible by sliding the knob 114 backwards in opposition to the tension of the spring 116. button 114 is released, the spring 116 pushes it forward by ensuring that the brake pad 118 prevents the tube

outside 120 to turn.

  In FIGS. 6 and 7, identical numerical references have been used to designate identical parts, the brush 3 of the

  heated type includes a box 61 which serves as a handle and an inner tube.

  In FIG. 6, the inner tube 62 is made of the same plastic material

  In Figure 7, the inner tube 72 is formed of aluminum and protrudes from the housing 61. The inner tube 72 of aluminum is manufactured either by stamping, extrusion or

by other means.

  The inner tubes 62 and 72 are fixed to the housings 61 by means of a pin 82 which is fixed by means of a screw 83 on the inner surface of the housing 61, passing through a hole in the tubes interiors 62 (Fig.6)

and 72 (Fig. 7).

  The inner tubes 62 and 72 serve to rotatably support the outer tube 63 of plastic material and to transmit heat from the heater 66 to the outer tube 63. The coupling 65 provided between the handle 61 and the outer tube 63 holds the circular brush. 64, supported by the outer tube 63 by means of a circular guide 67 in the front part of the handle 61, which corresponds to the striated flange 68 placed at the rear

  of the outer tube 63. The electric heater 66 is a heat

  positive temperature coefficient (PTC), which is placed in the

  interior tubes 62 and 72 and which is connected to a source of

  current, not shown, by electrical wires 70 which are introduced

  in the handle (housing) 61, and which are connected to a communication device

  tation 69 establishing inside the handle 61 a connection between the

  thermistor 66 and a rotating socket 78.

  The inner tubes 62 and 72 have a blind front end 77

  which forms a forward axial stop for the heater 66.

  The blind front end 77 of the inner tubes 62 and 72 abuts against the blind front end 74 of the outer tube 63. The outer diameters of the inner tubes 62 and 72 have values very close to that of the inside diameter of the outer tube 63 so that to ensure maximum heat transmission. The outer tube 63 comprises at its

  front end a portion 75 forming a handle and which is not heated.

  The rear end of the outer tube 63 has a flange 68.

  The flange face may be smooth but, however, in the preferred embodiments shown in Figures 6 and 7, this face is ridged as in Figure 1, a brake pad 76 provided on the front of the knob 79 operable to prevent the outer tube 63 from rotating. The button 79 can be operated by the thumb of the user is pivotally supported by one or other of the tubes

  interiors 62, 70 so as to be rotatable about an axis 80. -

  The button 79 is supported by one or the other of the inner tubes 62, 72, with the aid of a compression spring 85 which is fitted into a notch 86

  arranged on the button. In this way, the brake pad 76 is self-

  preloaded against the ridged face of the flange 68 to prevent the outer tube 63 from rotating until the user

248 3199

  actuates the button 79 by pushing it to spread the brake pad 76 and

  thus allow free rotation of the outer tube 63 and the brush 64.

  An embodiment of the present invention has been described above.

  the curling brush to be heated comprises an outer tube-in plastic material;

  tick and an inner tube made of plastic or aluminum. It is also possible to use the locking mechanism according to the invention with a curling brush of the heated type, having protrusions

  or removable bristles, as shown in Figures 8, 9 and 10.

  With reference to Figures 8, 9 and 10, where

  ticks designate similar parts, it can be seen that the curling brush com-

  takes a housing 61 which serves as a handle, and an inner tube 72 of aluminum protruding from the housing 61. The inner tube 72 is fixed on the housing 61 via a shaft 82 fixed with the aid of a screw 83 on the inner surface of the housing 61, via a hollowed hole

in the inner tube 72.

  The inner tube 72 serves to rotatably support the outer tube.

  160 and channel the heat emitted by the heater 66 to the outer tube 163. The coupler 65, provided between the handle 61 and the outer tube 63, maintains the fluted collar 68 of the outer tube 63 in a circular guide 67 formed in the front portion of the handle 61 corresponding to the ridged flange 68 placed at the rear of the outer tube 163. The flange 68 is formed of a plastic material which is poor conductor of heat. Said flange is engaged on the outer tube 163 by being mounted by sleeve. The electric heating device 66 is constituted by a thermistor with a positive temperature coefficient (PTC) which is housed inside the inner tube 72 and which is connected to a current source, not shown, by electrical wires 70 which are introduced into the handle (housing) 61, and which are connected to a pivoting socket 78 via a switching device 69 and using the wires 70 which leave the thermistor 66 inside the

handle 61.

  The outer tube 163 is formed of aluminum from the front end to the flange 68. This outer tube has grooves (as shown in Figure 10) 93 extending longitudinally from its front end to the flange 68. The grooves 93 shown in FIG. 10 have in cross section a shape of dovetail, but it goes without saying that one can adopt any other suitable profile. The grooves 93 receive, with the possibility of relative sliding, rows of projections 95 which are formed,

2 483199

  as shown in Figures 10, 1 and 12, on guides 96 embellishing

  in the grooves 93 to form the curling brush. It is planned eight

  grooves 93 and eight rows of projections or bristles 95 on the outer tube 163.

  It is possible to use fewer rows of protrusions 95, but we have

  however, the number of eight rows was the most appropriate. The projections 95 and guides 96 are preferably formed of a rubberized plastic material which conducts heat from the outer tube to

  63 aluminum, but however insufficiently so that the user is burned.

  It is appropriate to use as a material a thermos polyester elastomer

  plastic such as the product sold under the trade designation "Dupont

  Hytrel 5555-H18 by E.I. Dupont Company, Wilmington, Delaware.

  The flexible protrusions 95 may have any suitable profile provided that,

  when used, they do not produce-a tangling of the hair.

  It has been found that although relatively straight projections can be used

  gides, it is preferable to use flexible projections or bristles

  that they are less likely to entangle the hair. An advantageous solution consists in using protrusions of cylindrical or slightly conical shape with rounded points oriented perpendicularly to the guide.

  96, as shown in Figure 11. It is also possible to adopt another

  figuration corresponding to a triangular profile comprising a flat front portion and a flat rear portion, both of which are

  oriented perpendicular to the guide 96, as shown in Figure 12.

  As shown in Figure 8, the inner front end of the outer tube 163 has a thread 98 for receiving a tip 99 which is screwed into the thread 98. This tip 99 prevents the rows of projections or bristles from escaping by sliding . The tip is formed of a poorly heat conductive plastic material, such as polycarbonate, and is therefore hardly heated. When it is necessary to change the bristles 96 of the brush, the nozzle 99 is unscrewed and the bristles or projections 95 are removed. The inner tube 72 has a blind front end 100 which is in direct contact with the front end of the bristle device. heating 66. The end 100 of the inner tube 72 is not in contact with the removable tip 99. This ensures that the tip 99 remains cool to the touch,

  so that it can be removed without any risk for the user.

  The end 100 of the inner tube 72 constitutes an axial front stop for the heater 66. The outer diameter of the inner tube 72 has a value very close to the inside diameter of the outer tube 163 for

  maintain maximum heat transmission.

2 483199

  These diameters can be very close to each other, while still allowing free rotation of the outer tube 163 because of

  compatible coefficients of thermal expansion of the aluminum outer tube 163 and the

aluminum inner tube 72.

  The rear end of the outer tube 163 is formed of a plastics material and has a flange profile 68, as shown in FIGS. 8 and 9, having ridges on its face intended to come into contact with a brake pad. provided on the front end of the button 106, as in Figure 1. The button 106 is pivotally mounted within the handle 61 so as to be rotatable about an axis 107. This button 106 is maintained against the inner tube 72 by a compression spring placed between a notch in the lower side of the rear portion of the

  button 106 and a projection provided on the shaft 82 which holds the tube

  72 in the handle 61. In this way, the brake pad is automatically

  It is pivotally brought into a position where it holds the outer tube 163 until the user actuates the button 106 for release, which then allows free rotation of the outer tube.

163 and the circular brush.

  In the case of a curling brush with steam generation such as

  9, the outer tube 163 comprises a series of perforations

  94 which are arranged in the bottom of the grooves 93 intended to receive

  see the projections 95, to thereby allow an escape of the steam generated. It is best to provide perforations in alternate grooves, otherwise all the steam would escape through the front perforations, and very little steam would come out through the rear perforations,

  which would result in uneven curling of the hair.

  In addition, the end 101 which is screwed on the outer tube 163 cons-

  is a guide for the water tank 99 and the sliding ring 103.

  Also, when the tip 101 is removed by unscrewing the thread 98, the projections 95 can be disassembled. The water reservoir 99 is screwed into the sliding ring 103. This ring 103 contains a wick 102 which is in contact with the end of the inner tube 100 when the nozzle 99 is lowered axially. The water tank 99 can be disassembled for filling by unscrewing operation, but however it is also

  it is possible to have an end piece which is fixed by interlocking and not by screwing.

  The full tank 99 is then reinstalled in the ring 103.

  The ring 103 is moved axially inwards by exerting a thrust on the tip 99, which brings the wet wick into contact with

  the end 100 of the inner tube 72.

2 483199

  The water in the wick is heated - and therefore transformed

  in steam by the heat generated by the inner tube 72.

  The vapor escapes through the perforations 94 of the outer tube 163, and passes through the projection guides 96. The perforations in the guides 96 are not positioned directly above the perforations 94 of the outer tube 163 so that the The water tank 99 and the ring 103 are held in an output position by a compression spring 104 which is disposed longitudinally between a boss 105 provided on the outer shoulder. of the water reservoir 99 and a notch 109 which is formed in the nozzle 101. The outer tube 163 is centered on the inner tube 72 by a series of corrugations 108, formed on the surface

  inside of the outer tube 163 at the location of each of the grooves

  93 which do not have perforations 94. This allows to obtain

  an even distribution of steam on the circumference of the outer tube

163.

  The curling brush of the rotating, heated and lockable type is used in the following manner. The electrical outlet, not shown, is plugged into a source of electric power which causes the heating of the thermistor device; this results in a warm-up

  the inner tube and, by heat conduction, the outer tube.

  The bristles of the brush are not heated, but they become slightly

  However, their function is to maintain the undulations of the hair. When the curling brush is heated,

  the user wraps his hair around the brush with the brake tight.

  When the hair has been curled in the desired manner, it exerts a push on the button, which releases the outer tube, so that the brush can rotate freely. The brush is then pulled out of the head,

which releases the hair.

  When steam is desired, the curling brush shown in Figure 9 can be used. After the hair has been waved, the end cap of the outer tube containing the water reservoir is pushed, which causes produces steam that escapes through

  perforations in the outer tube and bristle guide.

  The device is removed from the hair as described above.

  Other rotating and known type curling brushes can be

  also arranged to use the locking mechanism described above.

  above, and the present invention is not limited to its application to a

* specific curling brush.

2 4 83 1 9 9

Claims (18)

  1.- Curling brush of the rotating type, heated and lockable for styling and curling a hair, characterized in that it comprises a housing (13, 61) serving as a handle, an inner tube (11; 62, 72) which is fixed on the housing projecting from it in such a way as to support   rotating an outer tube (5; 63; 163) and to be in a conductive relationship with each other.   heat with said outer tube, a resistance heater (66) which is housed in the inner tube so as to be in heat conduction relationship therewith, an electrical wire (70) provided in the inner tube connected to the heater (66) and to an external power source, an outer tube (5; 63; 163) supporting a circular brush and rotatably mounted on said inner tube (11; 62,72) in a relationship of conduction of heat therewith, and locking means for preventing rotation of the outer tube (5) and the brush, said locking means comprising a spring-loaded pivoting knob (1; 79; 114) ( 16; 85; 116) adapted to be actuated by the user's thumb, pivotable and located in the front portion of said casing (13), said knob having a brake pad (8; 76; 118) which is placed on this one so that it can be brought by a preload in contact with the surface of the rear end of the outer tube (5) by said spring,   to prevent the outer tube from rotating.   2. Curling brush according to claim 1, characterized in that said outer tube (5) has at its rear end a flange (4) which is rotatably supported by a circular guide (14).   provided in the front end of said casing (13).   3. Curling brush according to claim 2, characterized in that said brake pad (8; 76) is applied under the action of a preload   against the face of said flange (4).   4. Curling brush according to claim 3, characterized in that said actuating button (1; 79; 114) is pivotable relative to said inner tube (11, 62, 72).   5. Curling brush according to claim 3, characterized in that said knob (1) is mounted so as to be pivotable relative to said boot maker (13).   6. Curling brush according to claim 1, characterized in that said spring (16) is placed between said inner tube (11) and the back said button (1). 2 483199   7. Curling brush according to claim 1, characterized in that   said spring (16) is formed by an elastic metal blade.   8. Curling brush according to claim 2, characterized in that said button (1) has a generally rectangular shape and has on its front portion (2) a projection which matches the profile of the housing (13), said portion being provided a groove (3) which corresponds to the circular guide (14) provided on the front edge of the housing and whose profile corresponds to said flange (4), said groove provided on the button on   its front face a brake pad (8).   9. Curling brush according to claim 2, characterized in that   said face of the flange (4) is radially striated (7).   10. Curling brush according to claim 2, characterized in that   said inner tube (11) is made of aluminum and in that said arrangement   heating device (66) is constituted by a coefficient thermistor positive temperature.   11. Curling brush according to claim 10, characterized in that said outer tube (5) is made of aluminum and in that its flange (4) is formed of plastic material.   12. Curling brush according to claim 11, characterized in that   said outer tube (163) has longitudinal grooves (93) for   to receive rows of projections or bristles (95) which are fixed perpendicularly to guides (96) which slide in said grooves (93).   13. Curling brush according to claim 12, characterized in that   the bases of alternating longitudinal grooves (93) of the outer tube   have perforations (94) spaced longitudinally.   14. Curling brush according to claim 13, characterized in that the guides (96) holding the projections or brush bristles (95) comprise   perforations spaced longitudinally between projections.   15. Curling brush according to claim 12, characterized in that said projections (95) and said guides (96) are formed of a flexible material. 16.- curling brush according to claim 12, characterized in that there is provided a removable cover (103) fixed on the front end of the tube   outside (163), said cover blocking the ends of the guides (96).   17.- curling brush according to claim 14, characterized in that it is provided with a removable cover (103) provided with a water reservoir (99) and in that a wick (102) is fixed on the front end of the tube   outside (163), said cover blocking the end of the guides (96).   18. Curling brush according to claim 15, characterized in that one end of the wick (102) can be brought into contact with the front end (100) of the inner tube (72) and in that the other end of the wick (102) is in an area where it can receive water from the reservoir (99).