US 2747277 A
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y 1956' A. EsPosn'o 2,747,277
ATTACHMENT FOR ELECTRIC CLIPPER Filed Feb. 15, 1955 I, v fli s IN V EN TOR.
United States Patent 6 This invention relates to an attachment for electric clipper and more particularly to a device for use in barbering for the cutting of hair to a uniform length.
Among the various hair styles to which men conform, there is one style which is particularly popular, especially among small boys and athletes. The style consists in cutting all the hair on the head to a very short length.
One variation of this style is known as the crew cut and there are several variations, all having the same feature of uniformly short hair over most of the head. However, considerable dilficulty is encountered in giving a hair cut of this type; even a barber of considerable experience must use a great deal of care and time to give a presentable hair cut of this type. Devices have been introduced in the past for aiding in this problem, most of them consisting of combs which clip to the head of an electric hair clipper and regulate the distance from the surface of the head to the cutting blades, this distance being the length of the cut hair. However, these prior art devices have suffered from several disabilities. They have been complicated, so that they easily get out of order; they also have all been of a rather ungainly construction so that they present corners and crevices which can add to the discomfort of the person whose hair is being cut. Also, they have not been easy to put on and take olf the clipper, nor has their construction been such as to lend itself to inexpensive manufacture. These and other difficulties encountered in the prior art are obviated in a novel manner by the presentinvention.
It is therefore an outstanding object of the present invention to provide an attachment for electric clippers which will permit the cutting of hair to a uniformly short length over the entire head.
Another object of this invention is the provision of a clipper attachment of very simple construction which may be easily and inexpensively manufactured.
It is a still further object of the invention to provide a clipper attachment having no crevices or corners to cause discomfort to a person whose hair is being cut.
Another object of the instant invention is the provision of a clipper attachment which has a novel and effective means for grasping the clipper and closely embracing it.
To the accomplishment of the foregoing and related ends, the invention, then, comprises the features hereinafter fully described and particularly pointed out in the claim, the following description and the annexed drawings setting forth in detail certain illustrative embodiments of the invention, these being indicative, however, of but a few of the various ways in which the principle of the invention may be employed.
In said annexed drawings:
Fig. 1 is a perspective view of the outer surface of an attachment for electric clippers according to the present invention;
Fig. 2 is a perspective view of the inner surface;
Fig. 3 is an elevational view of the inner surface;
Fig. 4 is a sectional view taken along the line 44 of Fig. 3;
2,747,277 Patented May 29, 1956 Fig. 5 is an elevational view of the outer surface; and
Fig. 6 is a side elevation showing the clipper in place on an electric clipper.
Referring first to Fig. l, the attachment, indicated by the reference numeral 10, is shown formed of a light, soft, resilient material such as aluminum. The attachment 10 comprises a base portion 11 and a comb portion 12. Extending from one side of the base portion are clamping members 13. The comb portion 12 is composed of end fingers 14 and intermediate fingers 15.
Referring to Fig. 4, it can be seen that the attachment has an outer surface 16 which is of generally cylindrical form, the axis of the cylinder extending transversely. It is also provided with an inner surface 17 having a plane surface 18 constituting the inner surface of the base portion 12, as Well as another plane surface 19 defining the inner boundary of the fingers 14 and 15. Each finger has a tooth 26 extending inwardly and defined by an edge 21 extending at a right angle to the surface 19 and by a substantially straight edge 22. The edges 21 and 22 meet at an angle of approximately 30 degrees, while the edge 22 extends in a generally radial direction from the cylindrical outer surface 16 and the two are joined by a bevel 23. As can be observed from this view of the attachment, the relationship of the plane surface 18 and the cylindrical outer surface 16 is such that the base 11 tapers down to a very thin edge 24; this edge 24 is also curved, as is best shown in Fig. 5, the curve approximately the arc of a circle. Fig. 5 also shows particularly well the end edges 25, 25 of the attachment; it shows the manner in which these edges are inclined inwardly, so that the attachment takes the general shape of a trapezoid with the narrow portion at the top or at the comb portion 12. Actually, of course, a generous bevel is provided between the sides 25, 25 and the bottom edge 24 and between those same sides and the transverse line defining the upper extent of the fingers 14 and 15. This last bevel appears, of course, only on the end fingers 14, as is evident from the drawing. Fig. 5 also shows particularly well the shape and relative sizes of the fingers 14 and 15 making up the comb portion 12.,
The fingers are defined by slots which extend inwardly from the upper edge and end in semicylindrical surfaces 26. A deep bevel 27 is provided between each of the surfaces 26 and the outer cylindrical surface 16 of the attachment. The slots are approximately twice the width of the fingers 15 which they define. However, the end fingers 14 are considerably wider than the fingers 15 and, because of the inclination of the edges 25 are of a tapered shape.
Each of the clamping members 13 is defined in part by one of the edges 25 and by the lower edge 24 as well as the bevel or transition curve between the two edges. It extends outwardly from the surface 18 a considerable distance and is provided with a plane clipper-engaging surface 28 which is at a right angle to the surface 18. These surfaces 28 of the members 13 are parallel to one another and are spaced apart a distance equal to the distance between the sides of a clipper.
The operation of the attachment will best be understood by reference to Fig. 6. The attachment 10 is placed on an electric clipper 29 with the surfaces 28 of the clamping members 13 embracing the sides of the clipper. The plane surface 18 and the surface 19 meet at a large obtuse angle which is the same angle encountered on the underside, or heel, of the clipper, so that the clipper fits snugly against these surfaces with the forward edge of the clipper inserted firmly into the acute internal angle formed between the surface 19 and the edges 21 of the teeth 20 which are integral with the fingers 14 and 15. The clipper fits very tightly between the broad surfaces 28 of the clamping members 13 and deflects them outwardly slightly; this combines with the high coefficient of friction between the aluminum of the attachment and the steel of the clipper to hold the attachment securely in place on the clipper. As regards vibration, the clipper is embraced by the attachment along such broad surfaces that the attachment becomes one with the clipper. The vibration is absorbed by the attachment and there is no looseness to cause rattling between the two. In cutting hair the clipper and attachment are passed over the head with the broad cylindrical surface 16 contacting the surface of the head. The hairs project between the fingers and are cut by the clipper. Since the roots of the fingers are provided with the semicylindrical surfaces 26 and the bevels 27, the hair, after it is cut moves downwardly along the fingers and slides easily out along the outer surface of the base section 11 without catching or snaggmg.
Other modes of applying the principles of the invention may be employed, change being made as regards the details described, provided the features stated in the following claim, or the equivalent of such, be employed.
I therefore particularly point out and distinctly claim as my invention:
An attachment for electric hair clippers formed of one piece of aluminum comprising a base portion having a first plane surface adapted to lie against one surface of the bottom of the clipper, fingers integral with the base having inner surfaces lying in a plane which meets the first plane surface at a large obtuse angle and which is adapted to lie against another surface of the bottom of the clipper, a tooth integral with each finger and having an edge meeting the inner surface of the finger at an acute angle in which the edge of the clipper may reside, and a clamping member integral with each side of the base and having a plane surface adapted to lie against a side of the clipper, the edge of the base portion opposite the fingers being in the shape of the arc of a circle, the outer surfaces of the base portion and the fingers lying in a substantially cylindrical surface the axis of which extends transversely of the attachment, the side edges of the base portion and end fingers being inclined inwardly, the narrow end of the attachment being at the end occupied by the fingers, the curve of the outer surface approaching the first plane surface at the edge opposite the fingers.
References Cited in the file of this patent UNITED STATES PATENTS Re. 15,660 Gray July 24, 1923 835,259 Scharff Nov. 6, 1906 1,621,572 Young Mar. 22, 1927