Hairwinder

Abstract

A hairwinder having radially flanges at the end adapted for ease of handling and for minimizing tangling when the hair is unwound. The hairwinder is provided with fin or tongue-like projections which are of varying height and which lie in planes transverse to the longitudinal axis with end edges forming an angle of 90.degree. or more with the tangential plane of the curved outer surface through the base point of the end edge.

Description

This invention pertains to hairwinders adapted to be heated electrically by separate heating elements. More particularly, the invention relates to a hairwinder having radial flanges at one or both ends, and outwardly extending fin or tongue-like shaped projections. The hairwinder of this invention contains an inner heat accumulating member to facilitate improved heat transfer.

Hairwinders have generally contained projections of equal height and have been formed as cones or cylinders ending in a cone or ball segment. The projections are usually arranged in groups, each group consisting of several rows. Within each group the axes of rotation of some of the projections form acute angles with the tangential plane through the curved surface of the hairwinder. It has been the practice to remove the hairwinder from the heater element and to wind the hair by gripping the hairwinder at the projections. These pointed projections are somewhat unpleasant to handle and may even cause slight sensations of pain. If the hairwinder is grasped by the cylindrical extension beyond the projections, this part is usually too hot for convenient handling. Moreover, the projections are usually so arranged so that one with long fingernails will experience difficulty in this procedure for winding the hair. Another disadvantage is the difficulty experienced in attaching the outermost point of the hairlock to the curved surface of the hairwinder due to the height of the projections. There is a tendency for long hair to slide off the ends of the hairwinder and when it is desired to remove the hairwinder from the hair the hair may become entangled due to the acute angles between the hairwinder curved surface and the projections.

It is an object of the present invention to provide an improved hairwinder which will solve the aforementioned problems.

It is a further object to provide a hairwinder which facilitates ease of handling and prevents or minimizes entanglement of the hair.

The aforementioned objects as well as other advantages are accomplished according to the present invention by providing one or both ends of the hairwinder with a radial flange having a height above the surface of the hairwinder casing greater than the height of the highest of the outwardly extending projections on the casing, and by providing projections which decrease in height as they are located toward the center, the projections being fin or tongue-like in shape lying in planes transverse to the longitudinal axis of the hairwinder and with end edges forming an angle of 90.degree. or more with the tangential plane of the curved surface of the hairwinder casing through the base point of the end edge.

The above mentioned advantages and objects of the invention will be better understood by reference to the following discussion and drawings in which:

FIG. 1 is a perspective view of an embodiment of the hairwinder according to the invention;

FIG. 2 is a side view of the hairwinder;

FIG. 3 is a top plan view of the closed end of the hairwinder;

FIG. 4 is a partial sectional view of the upper portion of FIG. 2;

FIG. 5 is a partial sectional view of the lower portion of FIG. 2; and

FIG. 6 is a partial section taken along line 6--6 of FIG. 2.

The hairwinder may consist of an inner heat-accumulating body (not visible in the drawings) and an outer plastic casing 1, the curved surface of which is provided with rows of projections so that the projections 2, 4, 6, and 8 of one row are staggered in relation to the projections 3, 5, and 7 of a neighboring row. The said projections are constituted by narrow lugs or tongues having their plane at right angles to the central axis of the hairwinder and the end edges of each projection forming an angle v (FIG. 6) with the tangential plane of the plastic casing through the base point of the end edge which is greater than or equal to 90.degree.. At one end, the plastic casing is provided with a flange 9 which at its extreme peripheral edge passes into a cylindrical section 10. The other end of the plastic casing 1 is in corresponding manner surrounded by a flange 11 which passes into a cylindrical section 12.

The flanges 9 and 11 project from the curved surface of the plastic casing 1, a distance equal to or greater than the height of the projections 2 lying close to the flange. As will appear from FIGS. 2 and 6, the projections 2-8 and 3-7, respectively, of each row, are of a height decreasing from the ends of the plastic casing towards its central part where the lowest projections 7 and 8, respectively, are located.

The hairwinder is provided with a central hollow section which allows mounting over pin-formed or rod-like vertical heating elements usually found in conventional heating apparatus, so that heat is transferred from the heater to the inside of the hairwinder. The hairwinder is easily removed from the heating apparatus by grasping at flange 9 and lifting. Thus, the hotter projections 2-8 need not be handled. The flanges 9 and 11 are advantageously used for turning during the winding operation. Owing to the low projections 7 and 8 near the central part of the hairwinder a hairlock may readily be pulled taut with its outermost point against the curved surface of the plastic casing 1. During the continued winding of the hair the flanges 9 and 11 prevent the hair from sliding off the ends of the hairwinder. The flat tongues or fins 2-8 form no acute angles between any part of the projections and the cylindrical surface of the hairwinder. By eliminating acute angles there are no sections which serve as hooks and cause entanglement, when the hair is unwound.

The flanges 9 and 11 are provided with recesses 13 uniformly distributed along the circumference, which serve to reduce heat transmission from the plastic casing 1 to the peripheries 10 and 12 of the flanges. The recesses 13 at the closed end of the plastic casing may further serve as outlet and distributing passages for a feed of condensate in the cases in which the hairwinder is heated in an apparatus in which condensed liquid is fed to the top 15 of the hairwinder from condensation points in the upper part of the apparatus.

According to the invention the flange may be provided with a plurality of recesses distributed along the circumference of the plastic casing of the hairwinder. These recesses insure improved heat insulation of the periphery of the flange against the relatively high temperature of the cylindrical surface of the hairwinder. The recesses afford an additional advantage, if the hairwinder is of the type that is heated in an apparatus in which a condensed liquid is fed to the top of the hairwinder from condensation points at the upper end of the apparatus, insofar as they act as outlets and distributing passages for the liquid condensate. Moreover, due to the increased surface area of the flanges, adequate heat dissipation is effected so that one can handle the hairwinder by the flange without fear of burning.

The cylindrical section of the flange may be formed with a roughened surface by knurling or milling or provided with raised lettering or ornamentation, in order to effect improved gripping and reduced area of surface contact by the finger tips.

In one embodiment of the present invention the projections on the casing are of decreasing height as they are located toward the center. The high projections near the flanges at the ends of the casing may engage the hairlock efficiently inside the flanges. This results in the hairlock not sliding off the ends of the hairwinder even in the case when longer hair is wound. The lower projections located at the center make it easy for the user to press the point of the hairlock into contact with the curved surface of the casing when winding is started.

The projections in accordance with the invention are substantially flat-shaped fins or tongues lying in planes transverse of the longitudinal axis of the hairwinder having end edges forming an angle of 90.degree. or more with the tangential plane of the curved surface of the plastic casing through the base point of the end edge. The design, location, arrangement and height of the projections prevents entanglement of the hair during unwinding.

Claims

Having described my invention what is claimed is:

1. A cylindrical hairwinder having a closed end and an open end and being adapted for mounting over separate vertical heating means, comprising an outer plastic casing having a curved surface and outwardly extending projections thereon, and an inner heat accumulating body, said hairwinder having at each end a radial flange extending a distance from said curved surface of the plastic casing equal to or greater than the height of said projections from the casing surface, each of said flanges having a plurality of perforations at intervals between its periphery and the circumference of the plastic casing which serve to reduce heat transmission and act as outlets and distributing passages for liquid which condenses onto the top or closed end of the hairwinder.

2. A hairwinder according to claim 1 wherein said projections are arranged in staggered rows and are fin or tongue-like in shape and lie in planes transverse to the longitudinal axis of the hairwinder and have edges which form an angle with the tangential plane of the curved outer surface of the hairwinder through the base point of the edges equal to or greater than 90.degree. .

3. A hairwinder according to claim 1 wherein each of said flanges comprise peripheral edges connected and adjacent to an outer cylindrical section having a plurality of raised surfaces.

4. A hairwinder according to claim 2 wherein the height of said projections decreases as the projections are located toward the center.