GB2263082A

GB2263082A - Hair cutter

Info

Publication number: GB2263082A
Application number: GB9126345A
Authority: GB
Inventors: Mario Granito
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-12-11
Filing date: 1991-12-11
Publication date: 1993-07-14
Also published as: GB9126345D0

Abstract

A hair cutter 10 in the form of a comb 1 having teeth of set length T and pitch P and a blade 19 in the form of a truncated version of the comb with teeth.21 of length B substantially less than the comb teeth but with a substantially similar pitch. The blade is juxtaposed with and parallel to, the comb and is reciprocable in a direction F by a distance comparable to or less than that of the pitch spacing of the comb teeth by a manually operated lever 20. The teeth of the comb may be adapted to facilitate the entry of hair into the interstices of the teeth by being shaped along at least part of their length so that hair gathered into the comb is caused to change direction as it travels along the length of the comb teeth (Figs 2A and 2B). The teeth of the comb may be adapted to facilitate the trapping or retention of hair gathered into the interstices of the teeth by means such as bristles 23, 24 or other projections formed on or attached to the comb in the path. The teeth of the blade may be angled so that in moving the blade from the open to the closed position relative to the comb teeth the blade teeth are adapted to facilitate the trapping or retention of hair gathered into the interstices of the comb (Figs 3A and 3B). The teeth of the blade may have culling edges whose effective continuous cutting length is reduced by periodic interruptions such as by serration or castellation (Figs 4A and 4B). <IMAGE>

Description

HAIR CUTTER This invention relates to a hair cutter.

In our co-pending PCT Application PCT/GB90/01722 there is described, inter alia, a hairdressing comb characterised by a blade and a driving device serving to reciprocate the blade along a path from a home position to an extended position over a distance comparable with that of the distance between an adjacent pair of teeth of the comb. The blade is in two parts the first being fixed and lying in the path and the second part being reciprocatable as aforesaid, both parts having at least cutting edges of similar form, such that hairs or comparable fibres lying in contact with, or being drawn into contact with, the cutting edges are sheared by interaction between the cutting edges.

The second part is in the form of a comb having teeth of a length considerably less than that of the comb teeth but of similar pitch spacing; the blade being located at the root of the comb teeth; the blade being reciprocatable along the path between a home position wherein the blade teeth are aligned with the comb teeth in the vicinity of the root of the comb teeth to allow ready access to the space between the comb teeth; and an extended position wherein the blade teeth are offset along the path from the home position by a distance comparable with that of the pitch spacing.

According to a first aspect of the present there is provided a hair cutter in the form of a comb having teeth of given length set on a given pitch length and a blade in the form of a truncated version of the comb with teeth of length substantially less than the given length but with a pitch length substantially similar to that of the given pitch length; the blade being juxtaposed with and parallel to, the comb; the blade being reciprocable by a distance comparable to or less than that of the pitch spacing of the comb teeth; the hair cutter being further characterised by one or more of the following features: 1 the teeth of the comb are adapted to facilitate the entry of hair into the interstices of the teeth by being shaped along at least part of their length so that hair gathered into the comb is caused to change direction as it travels along the length of the comb teeth; 2 the teeth of the comb are adapted to facilitate the trapping or retention of hair gathered into the interstices of the teeth by means such as bristles or other projections formed on or attached to the comb in the path; 3 the teeth of the blade are angled to so that in moving the from the open to the closed position relative to the comb teeth the blade teeth are adapted to facilitate the trapping or retention of hair gathered into the interstices of the comb;; 4 the teeth of the blade have cutting edges whose effective continuous cutting length is reduced by periodic interruptions such as by serration or castellation.

Exemplary embodiments of the invention will now be described with reference to the accompanying drawings of hair cutters incorporating comb and blade components of which: Figures 1 and 2 are first and second embodiments relating to comb components; and Figures 3 and 4 are second and third embodiments relating to blade components In each case an embodiment is illustrated by way of a general side view and a detail.

Figures IA, 1B Hair cutter 10 has a working section made up of a comb 11 with a spine 12 from which extend fixed comb teeth 13 having, typically adjacent comb teeth 14, 15, of length T measured from the spine 13.

The spine 12 is incorporated in a handle 16.

A cover plate 17 serves to cover a channel 18 in which a blade 19 is reciprocatable by way of a manually operated lever 20 mounted on the handle 16. The plate 17 is serrated in the region of root area R of the comb 11 to - expose the roots of the comb teeth. The plate 17 is retained in place by screws to enable the blade 19 to be readily removed for sharpening and resetting.

The blade 19 is serrated in form with blade teeth (typically adjacent teeth 21, 22) of similar pitch spacing P to that of the comb 14, 15. The blade teeth are of length B measured from the spine 13. The blade teeth length B is very much less than the length T of the comb teeth (in this case B is about one quarter of the length of T).

The blade 19 when in its rest position (as shown in Figure 1A) lies with its teeth juxtaposed with the teeth of the comb so as to leave maximum open space in the root area R for the reception of hair.

The blade 19 is displaced from its rest position in the direction of arrow F to an extended position in the channel 18 (over a stroke length corresponding to the pitch length P) by means of the manually operated lever 20. That is to say from the rest position where a blade tooth is aligned with a given comb tooth to the extended position where the blade tooth is aligned with the next adjacent comb tooth. A spring is used to resiliently bias the blade 19 to move from its extended to its rest position.

Adjustment is provided in the driving linkage between lever 20 and blade 19 to limit, when desired, blade tooth stroke length to a distance less than P. Such a limited stroke can be used to reduce the amount of hair cut for a given stroke of the blade.

In this first embodiment the part of each comb tooth in the region of the root area R has bristles (typically bristles 23, 24) secured to it and directed upwardly into the closed end of the root area R to help trap hair drawn in the root area to resist any tendency of hair held in the root area R to be displaced out of the root area during motion of the cutting blade 19 through the hair.

In use the comb 11 is drawn through hair which is to be cut in a known way so that hair is swept up into the root area R of the comb. The lever 20 is then operated to cause the blade 19 to reciprocate over a distance P (or less if desired) to sever the hair in the root area R.

Claims

CLAIMS 1A hair cutter in the form of a comb having teeth of given length set on a given pitch length and a blade in the form of a truncated version of the comb with teeth of length substantially less than the given length but with a pitch length substantially similar to that of the given pitch length; the blade being juxtaposed with and parallel to, the comb; the blade being reciprocable by a distance comparable to or less than that of the pitch spacing of the comb teeth; the hair cutter being further characterised by one or more of the following features:

1 the teeth of the comb are adapted to facilitate the entry of hair into the interstices of the teeth by being shaped along at least part of their length so that hair gathered into the comb is caused to change direction as it travels along the length of the comb teeth;

2 A hair cutter as hereinbefore described with reference to Figures 1A and IB, or Figure 2A and 2B, or Figures 3A and 3B, or Figure 4A and 4B, of the accompanying drawings.

2 the teeth of the comb are adapted to facilitate the trapping or retention of hair gathered into the interstices of the teeth by means such as bristles or other projections formed on or attached to the comb in the path; ;

3 the teeth of the blade are angled so that in moving the blade from the open to the closed position relative to the comb teeth the blade teeth are adapted to facilitate the trapping or retention of hair gathered into the interstices of the comb;

4 the teeth of the blade have cutting edges whose effective continuous cutting length is reduced by periodic interruptions such as by serration or castellation.