US2141340A - Safety hair cutting appliance - Google Patents

Description

Dec. 27, 1938. H. G. BAUMGARTEN 2,141,340

SAFETY HAIR CUTTING APPLIANCE Filed April 2, 1937 2 Sheets-Sheet l Dec. 21, 1938.

H. G. BAUMGARTEN SAFETY HAIR CUTTING APPLIANCE Filed April 2, 1957 2 Sheets-Sheet 2 '....III

Patented De.`27, 193s UNITED STATES PATENT OFFICE SAFETY HAIR CUTTING APPLIANCEv Application April 2, 1937, Serial No. 134,605 In the Netherlands August 28, 1935 2 Claims.

The present invention relates to an improved safety hair cutting appliance of the kind comprising a comb and a fixed cutting blade, the comb being provided with an interior chamber 5 for retaining the blade, said chamber extending some distance in the comb teeth so that the cutting edge or edges of the blade will be exposed between the teeth of the comb.

A hair-cutting appliance of this kind in order to be useful and practical has to comply with various essential requirements.

'I'he interior blade chamber should be readily accessible in order that it may be cleaned from time to time. However, if the comb were made of two halves by having the blade chamber extending throughout the entire length of the teeth, the teeth would not be completely closed at the top. It is, however, essential that the teeth be closed at the end as otherwise in operation it cannot be avoided that thin hairs enter into the slot between the teeth halves at the outer extremities thereof, even if said slot be as minute as possible. It is therefore essential that the comb teeth be completely closed at the end.

5 Therefore, according to the invention, in a safety hair cutting appliance of the type referred to, comprising a two or multiple part comb, the comb parts are relatively movable so that the blade chamber may be exposed, and in ,0 the closed position they adjoin each other along one or more planes of division located rearwardly of the ends of the comb teeth. A slot at the end of the teeth is thereby avoided.

The relative movability of the comb parts may 5 be obtained in various ways. The parts may be relatively foldable, slidable or pivotal; they may also be connected together by a resilient clamping pressure or otherwise, provided they may be separated in such a manner that the blade chamber can be made easily accessible.

For practical use it is convenient to provide the comb with teeth at both of its longitudinal -Y edges, i. e. with two rows of teeth extending in opposite direction from the comb body, the blade then extending into both rows of teeth. If the blade is provided with two cutting edges, in the manner of the well known safety razor blades, it is preferred to make the teeth of the one row longer and thicker than those of the other row and to have the blade chamber extend in the rst mentioned teeth to less than half and in the last mentioned teeth to more than half the length of the corresponding teeth. It is then possible to use the appliance for any kindof hair cutting and trimming operations.

The teeth of one row may also be corrugated in the manner of undulation teeth and the teeth of the other row may then be somewhat bent outwardly of the main plane of the comb.

Although, as stated above, a comb having a double row of teeth, is very useful in view of the increased number of possibilities'of use of the appliance, it is possible as well to use a hair cutting appliance in which the comb has but one row of teeth.

In both cases (comb with double or single row of teeth) the comb body adjacent the bottom of the teeth is preferably bevelled so as to form, at both sides of the comb, surfaces inclined inwardly in the direction of the top of the teeth.

Also by providing the comb body with one or more, e. g. oblong, openings, affording access to the blade chamber, the blade may be shifted or removed manually, e. g. bymeans of the thumb and the fore-finger.

In order to make the appliance inoperative for hair cutting or trimming, so that it may be used as an ordinary comb, the blade may be made slidable into an inoperative position in the comb body or in a handle thereof by means of suitable actuating elements.

Besides the above described means enabling to cut or trim the hair in various ways a lloose toothed iitting, as e. g. known per se in the usual hair cutting appliances known as tondeuses, for automatically cutting hair, especially mens, may be mounted on the comb so as to form a projection or enlargement, whereby the hair may be cut long.

In general the two rows of teeth will differ as to shape and thickness in that the teeth of one row are each, at both sides of the comb, more or less convex, or curved, whereas the teeth of the other row may then each have a similar but less pronounced curvature. This ensures a more gradual engagement with the hair.

In order to fractionally or clampingly hold the blade in position in the blade chamber the blade chamber may have roughened surfaces, e. g. embossed surfaces or surfaces having a groove.

If the blade is more or less resilient in transversal direction the blade chamber may be made slightly curved in cross section so as to clampingly hold the blade without necessitating the use of other attachment means.

Conversely the resilient blade may have a slightly bent or curved initial shape, transversely to its longitudinal direction and the bladechamber may then be flat or may be shaped otherwise so as to clampingly hold the blade in a shape vention may be more or less differing from said initial shape. In such a case it may be advantageous for the trimming of the hair to slightly bend the blade cutting edge, located adjacent the slightly bent tooth ends, in a direction opposite to that in which said tooth ends are bent.

'I'he comb may be made of metal, rubber, wood, bone, galalithe, etc.; preferably, however, it is made of Celluloid.

Acomb according to the invention having a single or double row of teeth and an interior blade chamber may be brought on the market separately. If it is desired to use it as a hair cutting appliance it must be provided with a corresponding blade.

A hair cutting appliance according to the inused for the cutting and trimming of hair of human beings as well as of animals, such as sheep, dogs, horses, etc.

In the accompanying drawings various examples of construction are illustrated.

Fig. 1 is a side elevation of a hair cutting appliance according to the present invention. Fig. 2 is a section on the line II-II in Fig. 1.v

Figs. 3 and 4 are corresponding sections of other embodiments.

Fig. 5 is a corresponding section of a further embodiment, in which the comb-body is adapted to receive a blade a section of which is shown in Fig. 6.

Fig. 7 corresponds to Fig.v 5, however with the blade inserted in the blade chamber.

Fig. 8 is a cross-section of an embodiment, in which the comb has but a single row of teeth.

Fig'. 9 illustrates a cross-sectional view of a further embodiment;

Fig. 10 is a side elevation of a hair-cutting appliance in which the blade chamber may be made accessible by turning one comb-half about an axis perpendicular to the plane of the comb.

Fig. 11 is a section on the line XlI--XII in Fig. 10.

The hair cutting appliance shown in Figs. 1 and 2 comprises a comb body, provided with two rows of teeth, one row of relatively short straight teeth I and one row of teeth 2 (curved) in the manner of undulation teeth. The short teeth I are bent over at their ends 3 in the manner appearing from Fig. 2. The comb is made of two parts, the general line o f division between said parts being shown in Fig. 2 by the line 4, 5, 9, 1. 'I'he body-portion 8 of the comb is provided with a blade-chamber, adapted to receive a blade. 'I'he blade chamber extends into both rows of teeth. In the teeth I it extends up to the line 9 and in the teeth 2 up to the line I0. In the teeth I it extends over less than half the length of the teeth I and in the teeth 2 over more'than half the teeth-length. The blade has been denoted by II.

It follows from Fig. 2 that, although the comb is made of two parts, the teeth at their ends are entirely closed or uninterrupted, due to this fact that the division-planes 4 5 and 6 1 respectively are located rearwardly of the top ends of the teeth. 'I'he two comb-parts I2 and I3, one (I3) of which is provided with a handle I4 are hingedly connected to one the hinge-axis being located substantially in the plane of the comb and perpendicular to the longitudinal axis of the comb. 'I'he comb-part I2 may be turned upwardly (in Fig. l) about the hinges I5, I 6, whereby the so as to be easily removable.

The blade chamber may then be readily cleaned.

The comb-part I 2 another at I5 and I6,

blade will be exposed is provided with a tongue i1. which may be fixed in position to the handle I4 by means of a suitable clip or the like I8. The blade may have an initial slightly convex-concave shape in cross-sectional direction, so as to be attened when clamped in between the comb-parts in its chamber, whereby it is resiliently and clampingly held in position.

'I'he constructions according to Figs. 3 and 4 differ from that vaccording to Figs. land 2 in that the line of division between the comb-parts is somewhat otherwise. In Fig. 3 said division-line is denoted by I9, 20, 2|, 22 and in Fig. 4 by 23, 24, 25 and 26.

It follows from Figs. 2, 3 and 4, that the combbody at the foot o1' the teeth is bevelled or rounded in such a manner at both sides of the comb that surfaces 21, 28 are formed, which are inclined inwardly in the direction of the ends of the teeth.

In Fig. 5 the blade chamber 29 is provided with a longitudinal groove 30,'adapted to receive the longitudinal rib 3| of the blade 32 shown in Fig. 6. This blade is of partly flattened or obtuse V-shape in cross-section and due to its own resiliency will be ilattened when. clamped in between the combparts in the blade chamber 29 as shown in Fig. 7.

In the embodiment shown in Fig. 8 the comb has but one row of teeth 33 and the comb body is made convex at both sides, the comb-body and teeth having a diierent convexity.

In Fig. 9 the two rows of teeth 34 and 35 differ as to length and thickness and are also of different convexity.

In Figs. 10 and 11 the blade chamber may be exposed by turning the comb-part 42 about the pivot 43 i. e. about an axis perpendicular to the general plane of the comb. The comb-parts may be connected together at 44 by some suitable resilient clip or the like. In Fig. 11 the line oi division 45-46 and 41-43 is inclined inwardly and toward the top of the teeth, which is advantageous as thin hairs are thus most effectively prevented from entering between the combparts.

I may provide an auxiliary piece adapted to be and the supporting surface of thereby obtain a of the hair.

It will be clear that the drawings -illustrate but a few examples of all tie possible embodiments falling within the scope o the appended claims.

I claim:

1. A safety hair cutting instrument comprising a comb, a cutting blade, said comb comprising two parts, one of said parts being embraced within the other, said parts dening a blade chamber extending partially over the comb teeth so that a cutting edge of the blade will be exposed between the comb teeth and one of said parts being pivotally mounted so as. to swing about an axis perpendicular to the plane of said cutting blade.

2; A safety hair cutting instrument comprising a comb, a cutting blade, said comb comprising two parts, one of said parts being embraced within the other, said parts defining a blade chamber extending partially over the comb teeth so that a cutting` edge of the blade will be exposed between the comb teeth and one of said parts being pivotally mounted so as to swing about an axis located substantially parallel to the plane of said cutting blade and substantially perpendicular to the longitudinal axis of said blade.

HENRI GEORGE BAUMGARTEN.

the appliance and variation in the cutting length CERTIFICATE OF CORRECTION.

Patent No. 2,1)4 l,5) 4.0. l v l December 2'?, 1958.

HENRI` GEORGE BAUMGARTEN.

It is hereby certified that the name of the assignee inthe above numbered patent'was erroneously described and specified as "N, V. Eau de Colognefabriek Johann Maria Farina" whereas said name should have been described and specified as N. V. Eau de Colognefabriek Johann Maria Farina, Sternenvgasse 9 8c ll, Kgln 'a/Rhein, of Amsterdam, Netherlands, a corporation of the Netherlands, a-s shown by the record of assignments in this office; in the heading to the printed specification, line8, forl"1n the Netherlands August 28, 195 5" read In Great Britain .Tune lO, 1956; and that the said Letters Patent-should be readwith this correction therein that the sameI may conform to the record of the case in the Patent Office.

Signed and sealed this llth day. of April, A. D. 1959'.

I -Henry Van Arsdale (Seal) Acting Commissioner ofIPatents

Images