US2132025A - Electric hair clipper - Google Patents

Description

Ol. 4, 1938. R, N T 2,132,025

ELECTRIC HAIR CLIPPER Original Filed Feb. 25, 1931 INVENTORY flow/er if. Gmvszrr, BY

A TTORNE Y.

Patented Oct. 4, 1938 PATENT OFFICE Emc'mrc mm CLIPPER Robert R. Gonsett, Los Angeles, Calif., assignor of one-fourth to Peter P. Ruggierl, Ventura, Calif., and one-fourth to Johanna M. Wargin, Hu-

eneme, Calif.

Substituted for abandoned application Serial No. 518,206, February 25, 1931. This application April 5, 1937, Serial No. 135,182

6 Claims. (Cl. 30-210) The invention relates to electric hair cutters, and has for an object to present a hair cutter of small size, in a form adapted to be conveniently manipulated by one hand with a minimum of effort and without requiring the holding or movement of the device in positions awkward for the operator. It is an aim to present a novelconstruction in the device to enable its more certain manipulation and accurate cutting action.

A further important aim is to effect improvements in the construction and arrangement of the parts in such a device. It is a specific aim to enable the quick dismounting of the various parts without requiring complicated 'tools or equipment. Another object is to enable the removal of the respective blades for cleaning, adjustment and sharpening.

Additional objects, advantages and features of invention reside in the construction, arrangement and combination of parts involved in the embodiment of the invention, as will be more readily understood from the following description and accompanying drawing, in which:

' cutter,

Fig. 2 is a transverse section through the assembled device showing the structure and relation of the tension or retainer plate to the cutter bars and teeth thereof as well as the guiding prongs 24,

Fig. 3 is a detail of the reciprocating cutter removed, a

Fig. 4 is a rear view of the appliance,

Fig. 5 is a front end view thereof. I There is illustrated a hair cutter comprising a case Ill adapted to form a handle for the appliance, the rear body portion of the case being cylindrical, and having a forward portion tapered to an oblong shape in cross section at its extremity. The rear end of the case is closed by a screw cap or bushing 12 preferably formed of insulatlng material so that electric wires may be led therethrough safely to the electromagnetic motor of the device.

Secured in the cylindrical portion of the case H! l there is an electromagnet l3 comprising a core piece It having two spaced apart cross channels I5 therein of suitable dimensions to receive a coil of adequate size. The core thus has a central 50 field piece It and two outer end field pieces IT. The coils 18 of the magnet are energized by wires l9 from a suitable source led through the bushing l2 as shown. The core piece is centrally grooved across its outer side longitudinally of the case, and set in the groove there is the shank 2| Fig. 1 is a longitudinal sectional view of the of a frame piece 20, which may also be extended outwardly from the case and shaped to form the toothed finger bar 23, presently to be described.

The body of the frame piece is offset inwardly from the shank 2| in symmetrical relation to the handle.

The frame piece is formed with a cutter side smoothly ground to true longitudinal rectilinear surfaces. Centrally and longitudinally of this face there is formed a groove 22' extending for full length of the body portion and spaced inward from the inner face of the shank 2| a distance. At one side of this groove thebody of the frame is shaped as a finger bar 23 with fingers 24' extended at right angles to the groove, and each having a plane surface coincident with that of the adjacent top face portions of the bar. At the opposite side of the groove the bar is extended in a suitable shape for purposes to be described, but limited as much as practicable in order that the weight and bulk of the portion which is moved adjacent the head of a person will be a minimum. The outer longitudinal edge of the bar 23 at the side is fitted with two removable prongs 24 of considerable length, adapted for various uses in manipulating the device for cutting the hair of a person, and particularly in indicating the angle at which the plane of the cutter is disposed with respect to the adjacent contour of the head. These may also be rested against the head or neck of the person to steady the cutter as it is moved forward in cutting the hair. Also, while the handle is grasped in one part of the hand, a finger or fingers may be extended to rest on the project from one or both prongs toward the head of the person whose hair is being cut, to regulate the length of the hair left uncut upon the head.

It is also contemplated that the ends of the spurs shall be rested against the neck or head of the person whose hair is being cut and used as both a rest and a lever to move the cutter outward from the head progressively as the cutter is moved forward in operation. This leverage is effected by adjusting the prongs flat against the lower neck portion of the person and then by twisting the handle so as to cause the tips of the prongs to press against the person, the bar is lifted away from the scalp. This twisting referred to is such as to rotate the handle on its longitudinal axis, it will be understood. By making this twisting progressive as the cutter is moved upwardly, the proper "shingle of the hair as desired may be accomplished.

A cutter bar 26, is provided, of a suitable form complementary to the finger bar, in accordance with familiar practice in the manufacture of clippers generally. Its rear edge is formed with a rib or flange 21 adapted to fit snugly and slidably in the groove 22', and the bar 26 'is'extended inwardly into the case a distance as a plate 28 on which the rib 21 is continued. Near the inner end of the bar 26 a lateral rearwardly extending arm 29 is formed therein, stopping short of the side of the case Ill. The adjacent faces of the frame are smoothly finished in a common plane on both sides of the groove, so that the bar and arm 29 may slide smoothly thereon. A lever 30 is laid on the plate 28 and arm 29 to oscillate thereon. This lever has a longitudinally slotted extremity, receiving therein a pin 3| carried on the end of the arm 29. This lever extends across the frame to near the far side of the case; where it is fixed on an armature 33 disposed in operative relation to the electromagnet l3. A leaf spring 34 is also secured as by rivets 32 to the armature under this lever, its opposite end being secured to the magnet, yieldable to theforce of the field of the magnet in attracting the armature when the magnet is energized. This spring serves as the mounting of the armature and serves to cause it to pivot thereon.

A retainer plate 35 is loosely engaged over the cutter and lever inspaced relation to the finger bar, this plate having a flange 36 at its forward edge, engages in a groove formed in the outer face of the cutter, and the plate 35 has at its rear edge an inner flange 38 resting against the flange piece and finger bar at the rear edge. Retaining screws 39 are engaged through the plate 35 and in the frame piece, small helical springs 40 being engaged therearound and confined between the plate 35 and the frame piece. By this means the cutter maybe held securely in proper operative relation to the finger bar and the springs will prevent binding of the cover plate on the cutter.

In operatiomthe current supplied through the wires l9 may be taken from any suitable source of alternating or intermittent current supply. The armature 33 and spring 34 may be so proportioned as tdrespond to normal alterations of current in a 60 cycle supply, or the circuit may include an interrupter of lower frequency of intermission. When the magnet I3 is energized the attraction and movement of the armature causes the lever 30 to swing longitudinally outward and bearing on the pivot 3|, the cutter-bar is moved correspondingly outward. As soon as the current lever and cutter.

ceases or reverses, the spring forces the armature outward, producing a reverse movement of the All moving parts may be removed by drawing the screws holding the cover plate and removing the latter. The prongs 24 are of suflicient length ,to project through or from under a mass of hair, in case it overlies the cutter, so that the finger bar may be held in proper plane with relation to the head from which hair is being edge of the finger-bar adapted to rest against the head and to receive the finger of an operator against the side thereof for the purpose described.

2. In a hair cutting appliance including a finger-bar, a longitudinally reciprocable cutter cooperatively associated therewith, a bell crank lever mounted to pivot at its middle in the plane of the arms of the lever and provided with an arm initially transverse to the cutter and connected at its extremity to the cutter, said lever having a second arm extended longitudinally of and away from the cutter and having an armature thereon I oscillatable transversely to the longitudinal axis of thecutter and an electromagnet operatively associated with the armature.

pliance has a handle enclosing the lever and inner partof the cutter and the'second named arm of the lever is extended longitudinally in the handle, the electromagnet being in the handle laterally .beside the said second named arm and armature.

4. The structure of claim 2 having a longitudinal hollow handle, and in which the cutter is formed with a lateral extension of its inner part within the 'handle, the extremity of the first named arm of the lever being pivoted to the extremity of the extension,.the magnet being inwardly of the" extension longitudinally of the handle and at the same side of the handle, the second named arm of the lever being at the opposite side of the handle sion.

5. In a device of the character described, a cutter bar, a cutter slidably mounted thereon having an inner end projected substantially at right angles therefrom and having a lateral pin at the extremity thereof, a bell crank lever having an arm transverse to the cutter and having a longitudinal slot opening on the extremity thereof, said pin being engaged slidably in said slot, a

.39- from the said extenpivotal mounting for the lever adjacent its middle, H

6. In a device of the character described, a

tubular handle case having a tapered outer end, a mechanical unit insertable and retractable from the larger end of the case comprising a cutter bar and cutter slidable thereon together snugly fitting and insertable through the tapered extremity of the case having their major cutting portions projected a distance outwardly of the case, the inner end of the cutter having a lateral arm within the larger part of the case provided with a wrist pm at its extremity, a bell crank lever pivoted at its middle in the case tooscillate in a plane coincident with the arm longitudinally of the case, said arm having a. slotted extremity receiving said pin slidably, and having an arm extending inwardly from the cutter longitudinally of the case at the side opposite said arm of the cutter, said cutter bar having an extension offset beside said arm of the cutter and secured removably to the side of the case, an electromagnet mounted on said extension of the cutter bar, and an armature on the last named arm of the lever in operative relation to the magnet.

ROBERT R. GONSETT.

. 15 3. The structure of claim 2 in which said 943-

Images