US2595287A - Electric shaver light - Google Patents

Description

May 6, 1952 LIL. PERRY 7 ELECTRIC SHAVER LIGHT Filed oct. 'r, 1946 RSHA VER Lesfer L. Perry IN V ENTOR.

A T TOANE Y Patented May 6, 1952 UNITED srarss 2,595,287 ELECTRIC SHAVER LIGHT Lester L. Perry, Denver, Colo.

Application October 7, 1946, Serial No. 701,775

3 Claims. (Cl. 240-2) The present invention relates to dry shavers and more particularly to dry shavers which are provided with means, either forming a part thereof, or detachably connected to or mounted thereupon, for the purpose of illuminatingthe surface to be contacted and shaved by the dry shaver. 1

Various illuminating means with dry" shavers have been provided, some of which have been satisfactory from the standpoint of use, but none, or at least only a few of which have been wholly satisfactory from the manufacturing standpoint. This was due to the fact that in many instances special lamp bulbs or built-in resistance elements, all requiring manufacturing changes in the design of any present shaver were required, because of the fact that the shaver motor required a current voltage of from 110 to 115 volts, whereas the relatively small and low voltage incandescent lamp bulb could only operate properly with an extremely low voltage current. Moreover, in accordance with some prior art devices, portable battery-powered lamp bulbs were employed to illuminate the surface to be shaved.

Such devices were obviously bulky and cumbersome to handle. Other devices of the prior art required special bulbs and interference with the motor wiring so as to illuminate the bulb properly from the same source of current which flowed to the magnetic type motor for operating the shaver.

One of the objects of the present invention is to provide an improved dry shaver having im'- proved illuminating means for the surface to be shaved, which device does not have any of the objectionable features, some of which have been described above, of the previously known'devices of this general nature. I

Another object of the invention is to provide a compact and relatively light shaver structure 1,

in which an adapter member attached to a three wire cord, one wire of which has the proper ohm resistance to reduce the voltage from the 110 to 115 volts required for the shaver to the 6-8 volts required for the radio panel light bulb, is associated with the structure for the purpose of adapting the normal electric current of from 110 to 115 volts for operating the shaver motor, for use in illuminating the low voltage lamp bulb with which the shaver is equipped.

Another object of the present invention is to provide an improved shaver structure in which the illuminating means and the voltage adapter member or plug may be clamped onto the shaver casing and removed facility.

therefrom with ease andv 2 Another object of the present invention is to provide an improved dry shaver having means for illuminating the surface to be shaved, which is capable of employing a standard or convention 6 volt radio lamp bulb of the type normally used for illuminating a radio dial; it being another object of the present invention to provide the shaver with a low voltage adapter plug fitting in the circuit and permitting the use of 'the 6 volt radio bulb and thus serving to interconnect a three-wire detachable electric connection :plug with-the shaver motor and illuminating means.

Another object of 'the present invention is to provide an improved shaver of the foregoing character in which the lamp bulb for illuminating the surface to be shaved, while being protected by a hood, is readily removable fromt'he shaver structure forpurposes of removal or replacement.

A further object of the invention is to provide an improved shaver having a two-part or twosection casing and improved illuminating means, in which the illuminating means may be installed as a part of the assembly Without requring any manufacturing changes except for the upper part, half or section of the casing.

A further object is to provide a shaver having improved illuminating means which may be applied to the standard or conventional shaver casing of any make or brand of shaver, and removed therefrom, without requiring or necessitating any manufacturing changes whatsoever in the shaver structure.

Another object of the invention is to provide a low voltage lamp bulb having a socket fitting Within a hood or reflector recess formed in the shaver casing, in which the bulb socket has a sliding friction fit permitting it and the bulb to be removed when and if desired.

The foregoing and other objects and advan- 'Fig. l 'is a side elevational view, partly in section, of one form of dry shaver embodying the present invention.

Fig. 2 is a front ,elevational view of the structure shown in Fig. l;

Fig. 3 is a side elevational view, partly in section, of another'form of the present invention Fig. 7 is a schematic diagram of the electricalcircuit illustrating particularly the-functional.

relationship of the low voltage adapter member and the three-wire detachable electric connec tion plug. 1

Before explaining in detail' the presentinvention it is to be understood that the inventiomis not limited in its application to the details of construction and arrangement of parts. illustrated in the accompanying drawing,.since the invention is capable of other. embodiments and of'being practiced or carried outlin variousways. Also it isto. be understood that the phraseology or terminology employed: herein is for the: purvpose of descr-iptionand notof limitation.

Referring nowparticularly to the drawings, .in Figs. L and 2 thereof: theldry shaver ofthemesent-v invention is shownin one of, its. forms: in which itcom-prises a.-two-part-casing,or housing Ill as indicated at lfla-iwithin: whichuislocated an electric motor of the magnetic type and adapted to be operated upon the usual house current having-a voltageof from-110 to.115 volts. At one end-portion thelcasing lfl is providedwith a shaving; head I I andcarrieson itsupper side or surface a preferably centrally disposed longitudinally extending sub-casing or housing. l2 which may or may not be formed integrally with the main housingor casing 10. The forward end of. the subcasi ng l2.is intheform-of ahoodor reflector I2b providing va..preferably circular. recess. l 3, the hoodhavi'nga longitudinal guideway or slot l3a formed therein; The recess receives the socket (4 of .alow voltage electric lamp. bulb, such as a (ii to. 8 volt conventionalv radio. lamp bulb 15, which is threadedly engaged. in the socket. Thesocket i4 is formedof suchasize as to have a sliding. friction fit inthe recess I3 r and. has a guide rib or projection. Ila-which registers with and is adapted. to slide imthe guideway. l3a. The friction fitprevents'thefelem tric lamp and its socket from. becQmingQacciI- dently displaced from the recess yetpermitsthe lamp and its socket to be: removed; as indicated in broken lines in Fig.v 1, .-to. permit the removal or replacementofjthe l'ampbulb. To. permit, this freedom of movement within the recess i'n' the hood Ho and to. be removable therefrom, the

electric wires IB'leadingto the lamp bulb auditssocket are provided: with a slack'portio'n or surplusat I611 At the rear endfof' thabody or casing. l',,there is provided a low voltage adapter member orpjlug ll. carrying the wires l6, previously referred to. This adapter member or plug is chamferedf. or beveledat its forward rtion' M3 to interfit" with the adjacent or rear end portion I20 of thea'uxiliary or sub-casing l2, so as'to' make a snugifit therewith. The under surface Wof'the member or plug is shaped so as to lieflatuponthe adjacent or rear end, portion of the 'casinglfl. The wires lfiterminateat the rear "end of-the adapter member or plug I] in fixed contact" pointsior. pins Hib, one such being shown in Fig. 5.

A three-wire detachable electric connection plug 20 is applied to the rear end of'the casing and its upper portion or section has sockets 2m and 2 lb (see Figs. 5 and 6) to receive the contact pins Nib of the adapter plug. This connection plug or member 20 is provided in its lower forward portion or section with similar sockets 22 to receive contact pins or members (not shown) projecting outwardly from the rear or inner end of the shaver casing 10, these providing the electrical connections for current which flows to the magnetic type motor housed within the casing H).

The plug 20 carries a cable or conduit 20a containinga wire 20b carrying 110 to 115 volt cur rent; a "Nichrome or equivalent resistance wire ZOcofJprQper ohms resistance, such as 390 ohms resistancato reduce voltage from 110 to 115 to Sta 8 volts, and a third wire 20d common to both wiresi2llb and 260. It is to be understood that the 110-115 volt wire 2% and the so-called common wire 20d. are electrically connected through sockets-22 and. pin contacts. (not-shown) to. the electric motor (not shown) in, the two-part casing. 1.. Wire 28d is also electrically conne cted;.with the addition of resistance wireZflc t'o sockets 21a and 211; and pin contacts 15b, etc., and to the lamp bulb l5.

It will be understood that the plug memberor connection 20 is detachably connected to the rear. end ofthe casing. 10. and also to theinterconnecting low voltage adapter member or. plug H1, Thislplug 20- also acts as a stabilizer to hold thelarnp assembly, includingthe-sub-casing 12., against movement on thecasing (a.

Itistosbeunderstood that the recess l3 formed in the hood portion I2?) of the sub-housingv or casing I2, provides not only a space for the lamp bulb. 15' and its socket but alsov serves as a reflector for the rays of light emitted by. the bulb, which latter are directed onto the surface to be shaved.

I'tlwill be understood, of course, thatif'd'esired, the, adapterimernberor plug I! may be formed integrally-with the casing 10 and sub-casing, I2,

or, may. be a separatev member and detachable therefrom, as indicated in Fig. v1

In Figs. 3 and 4 of the drawings ther is shown a somewhat modified form of the present invention.. Intliis. form of .the invention, thecasing or housing. 0 of. theshaver hasclipped or. clamped onto its top side, an auxiliary or sub-casing. or housing (2, generally like that-of the preceding form of. the invention. The sub-casing or auxiliaryhousing l2 of this form is, however, provided with a clip, clamp, or band member-12a, which permits theauxiliary casing l2 to-be removably attached to the shaver casing Ill; The adapter member or plug I-'land the detachable electric connection plug 20 of the present form are: substantially the same as those of the preceding; form. The adapter member I'l-rnay or may not beyformedras' an integral part of the auxiliary. casing: or; sub-housing l2 of Figs. 3 and*4.

As in the. precedingforin of the invention, the electric? lamp bulbv l5is preierably. of 6 to 8 volt power and is .a standard or conventional radio lamp bulb which may be used by virtue of the provisionoitheadapter member'or plug ilfand the resistance wire connected thereto. I

From the foregoing it will'be seen-that'I have provided an improved dry shaver having improvedmeans, for'illuminatingthe-surface to be shaved; in which the illuminating means-ancl 'its casingor housing may be formed as apart of the shaver casing or housing or may be detachably supported on the latter by means of a clamp, clip, or in any other suitable manner, so that it may be applied to or removed from the shaver casing proper with ease and facility. It will also be understood that by virtue of the present invention, the normal 119 to 115 volt electric current may be employed to operate the shaver motor and to also illuminate the lamp bulb, this because of the provision of the adapter member or plug 17.

The term dry shaver as used herein is to be understood to apply as Well to other similar appliances of various sorts such, for example, as electric clippers used-by barber's, etc.

Having thus described the invention, what is claimed is:

1. An electric shaver comprising a casing, an electric motor within said casing, a shaving head at the forward end of said casing operably connected to said motor, a pair of electrical contacts at the rear end of said casing operably connected to said motor, a hood mounted on said casing, a low voltage bulb mounted in a socket in the forward end of said hood to project light toward said shaving head, a pair of wires extending rearwardly from said socket through said hood, a low voltage adapter member having wires secured to said socket wires, an electrical connection plug having a pair of low voltage connections adapted to engage said low voltage adapter memberto complete the low voltage circuit through the member, said connection plug also having a pair of normal voltage connections adapted to engage said electrical contacts, a conduit comprising a pair of low resistance wires and a high resistance wire, said low resistance wires being connected to said normal voltage connections, said high resistance wire and one of said low resistance wires being connected to said low voltage connections.

2. An illuminating device for an electric shaver having a casing and motor contacts, comprising a hood surmounting and forming a fixed part of the casing of said shaver, a low voltage bulb mounted in one end of said hood to illuminate the working zone of said shaver, a low voltage adapter member electrically connected to said bulb and detachably connected to said hood, a connection plug having a pair of normal contacts adapted to engage the conventional motor contacts of said shaver and a pair of low voltage contacts adapted to engage said low voltage adapter member and a three-wire conduit connected to said connection plug supplying normal voltage to said normal voltage contacts and low voltage to said low voltage contacts.

3. An illuminating device for an electric shaver having a casing comprising a hood mounted on said casing, a substatnially cylindrical portion in one end of said hood adjacent the working zone of said shaver, a bulb socket frictionally engaging said cylindrical portion, an adapter member removably engaged in the other nd of said hood, and a slack wire connection between said adapter member and said bulb socket whereby said bulb socket may be removed from said hood for in sertion or removal of a bulb, said cylindrical portion being provided with a longitudinal guideway, said bulb socket being provided with a guide rib slidably engaging said guideway and said cylindrical portion also forming a reflector for the light rays emitted from said bulb.

LESTER L. PERRY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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