US2496744A

US2496744A - Razor motor casing

Info

Publication number: US2496744A
Application number: US716250A
Authority: US
Inventors: Peter C Neilsen
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-12-14
Filing date: 1946-12-14
Publication date: 1950-02-07
Anticipated expiration: 1967-02-07

Description

Feb. 7, 1950 P. c. NEILSENv 2,496,744

RAZOR MOTOR CASING Filed Dec. 14, 1946 Patented Feb. 7, 195o 'e `2,496,744

f UNITED STATES f' 2 496344@ f; e. f

yim zoiiivio'roR o-s'iNG Peter c. Neiisei'i chicago, in. 'Application December 14, 194s, serialize. 716,250 1 soiaims. 4(ci. 17g-126i The present invention relatesto an electric 'gthe rater, theview being'taken on the line 3--3 razor of the type commonly known as a wet razor of Fig. 1;

` 4 Jis a transverse sectional view through wherein the razor head is of the safety razor type.l Fig. The razor casing accoinriiodatesr a `motor that the razor. the view'being taken on the line 4--4 actuates the head causing vibration thereof. rThe 5 1 ofFig. `v1'; v and user of such a razor first softens his beard with Fig. 5 isa' lngitudinalsectional view,l the view Warm water and shaving soap or cream and then being' takn'on the line" 5-5 of 'Fi'g. 1. the vibrating head of the razor is brought in con- For purposes of illustration a single emboditact with the users face and the beard is rern'ent'of'the presei'itinvention has been selected, moved in a manner similar toy that employed mail? being'eCOghZ'dhQWeVithat m21hy`m0difl`- with a conventional safetyrazor. The vibration cations may be 'made inithe embodiment shown of the head provides a cutting action that greatly withoutdepartingfrom the intended scope of the increases the eiiiciency of `this type of razor over invention. i that of the conventional safety razor. Referring to the drawings the invention is One object of the present invention is to pro- 15ill'ustrated in the lform ofa razor generally individe such an electric razor wherein the motor is vcated at lvthat comprises a-casing generally infirmly held in the casing insuch a manner that dicated vat il and a head generally indicatedr at water is prevented from entering the casing and l2".l A"The casing I l'g-comprisesy a cylindrical porcoming in contact with the motor parts. At the tOn I3 that tapers as at |4- -The Opposite end same time there is a complete elimination of 2f of 4rthe casing Il isopen'and is` provided with a screws and the like penetrating the casing. In flange portion 15 thatabuts against a shoulder prior razors of this type themotor lis held in the" l5' Chemy Bhd Cap 'I1 that' GlOSeS the Open end 0f casing by means of screwsl that ypass through the casing ll. i i the casing and the exposed heads of these screws Mounted in the Casing ll .is a mOtOl generally are constant sources of difficulty, both in allowing I" 25 indicated at I3. This motor lfnllldes a mitg-y water to pass through the casing and coming in netic core member-19 4thatis substantially inA contact with the motor parts, and further these the shape ..0f .an E that inCludes a Pall' 0f screw heads provide constant sources of electric spaced arms 20 andr 2l and a Central amz. shock to the user of the razor. In addition to this Disposed .about thezcehtlal arm 22 is ah electr()-`r difficuity users of prior electric razors ci this ai meeneticol thetis adeptedto be connected type are constantly subjected to electric shock to` asouree 0i electrical current by means of when the head of the razor comes in contact'with Wes 24 and 25 that pass through an aperture 2 6 in the end ;cap l1 As shownin Fig. 24 the` the users face. This is due to the fact that in prior razors water is allowed to seep through Core I9 may be madQP-.Ppof a plurahl'YIOf 19ml" hated, plates jim.v

the casing from the head thereof so as to cause r9,5 f i; :kk v

1 An armature/211s provided atene end with an a short in the electric circuit, thereby charging o rip-turn d portion 2 8.As shown in Fig. 2 a pair' the razor head with an electric charge. This

ofarrns

29 and 3 0 are Welded to the 'up-turned diiiiculty is completely eliminated in the razor forming the subject matter of the present invenp0rno 23 0f the afmal'ule 27 S0 as to form m tion by an effective grommet at the head end 4u effect membm @halfl adapted tostraddle of the razon f one end of the core l9.. A rivet 3| passes through The present invention provides a sturdy razor e ms zand au fg um member ld through cf the type described wherein vibration of the 9 @mma es Cori. 5; is o Secure ec mem' casing itself is reduced to a minimum. ber and the arma ure 1 to the Core '9 A pair, Further objects and advantages of the inven 45 of Stpacec maclmerzscrewstz pass hrOug-:l the upurne por ion B'of re arma rure 2 and lgsrilor?elhpgr clouowmg. are forced against the end ofthe'core I9 so 5 f as to make the up-turned portion 230i the arma- Fig. 1 is a longitudinal sectional view through tr-e121 frgidwitk rspf, to the core A"L The the razor. the heed 0f the razor heme Shown 50 opposite end of the armature 21 is provided with mostly in elevation; an up-turned portion 33 that is apertured at 34 Fig. 2 is a longitudinal vertical sectional view to receive a, stud end 35 of a post 3E. The post taken through the razor ShOWIl in Fig. 1, the head 36 is electrically insulated from the armature 21 on indicated at 31. The stud 36 is threaded to receive a of the razor being shown in elevation; by means of insulati Fig. 3 is a transverse sectional view through 55 end 35 of the post nut 38. The free end of the post 36 is provided with a flange 39 to which is secured the razor head I2 that may be of any conventional type. For purposes of illustration the head I2 is shown as comprising a razor blade supporting member 40, a razor blade 4I and a blade hold-down member 42. Thus head I2 may be threaded into the post 36 as indicated at 43.

Surrounding the. post 36 is agrommet 44. made of rubber or somesuch. suitable; material that is adapted to seal the opening in the head end of the casing II. a lower sealing skirt portion 45 that is adapted to rest against the inner face of the tapered?y portion I 4 of the casing II. Adjacent tothislower skirt like portion 45 is a ilared portion 46 that is provided with a shoulder 41' thatrengagesithe;

end of the tapered portion I4 of the casing I I. The outer extremity of the shoulder 41 conforms with `the outer peripheralsurfaceof the tapered portion I4 of casing II.

provided .on the inner` side of the flang'ey49. Thus the grommet 44 provides an effective seal so as to prevent passage of Water` from theheadend of the razor into the interior of the casing I I.

As shown in Figs. 3.l 4 and. 5 the casing II is provided with a rectangulargroove49 along the top inner surfacethereof and. this groover extends substantially the full. length of. the casing. and corresponds in width with the vWidth of.the. core I9 of the motor. Thus the core I9 is adaptedtot..

into the rectangular. groove, 49: of the casing as indicated in Figs. 3 and` 4.- and thus be held.

against lateral movement inthe casing, Adjacent to the bottom of .the..core Isare apair of spring like casing engaging.V members, 50 and 5I secured respectively to arms-20 and.2| offthefcore The engaging member. 50;' isa substantially. U-shape as indicatedin. Fig. Biand issecured toA 54 and 55 (Fig. 3)' are provided alongthelower inner face of thelcasingII at least in thefforward part of the casing, andy these; guidestrips arespaced to conform with the width ofthecasing engagement member-50 so as to guidethecasing engagement member' 5 D and hold'the lowerend of the core I9' againstlateral movement irr the casing.

The end cap I1 is provided with a pluglike` portion 56 thatis adapted to enter the. casing II and an upstanding projecting portion 51 is provided along the upper edge ofthisplug like portion 56, this upstanding portion beingadapted to nt snugly in the groove 49.

Thus is provided a .razorV of the; type described. that has a casing entirely` free. of. penetratingr screws and the like. Themotor I8. is. retained.

This grommet 44 is provided with`V The outerend" oi" the grommet 44 abuts against the shoulder 48A thatis A Ix rigidly in the casing through the armature 21 is free to vibrate up and down about its rear rigid connection to the core I9. This vibration is caused by the alternate changing of the polarity of the free end of arm 20 on the core I9. This action results from the change of eld direction induced by the operation of the electromagnetic coil 23 in response to an alternating current. This vibrating movement of the armature 21 is in effect a very rapid backward and forward movement in one plane in a lateral direction parallel to the edge of the razor blade 4 I.

I claim:

1. A razor of the class described comprising anelongated casing having an open end, a motor in the casing adapted to slide through the open end of"A the casing, andV means holding the motor xed in the casing without penetrating through the Walls of the casing including a groove in the inner face of the casing, means on the motor adapted to t in the groove, and casing engaging means on the opposite side of and fixed tothe motor andslidabiy engaging the inner face of the casing so as to hold the motor in fixed positionr in the casing.

2. A razor of the class described comprising an elongated casinghaving an elongated inner chamber of substantially circularv crosssection, the casing having-an open end, a longitudinal groove in the wall of the chamber, a motorin the casing adapted to slide through the open end of the casing and having a longitudinal projecting portion adaptedy to project into the groove..

and an arcuate engaging member on the motor on the side opposite the projecting portion adapted to engage the wall' of the chamber.

3. A razor of the class described comprising an elongated casing having an elongated innerchamber ofv substantially circular cross section, the casing having one end open and the-other end provided with a hollow elongated boss-like portion, a longitudinal groove in the wall of the chamber extending from the open end, a motor in the casing adapted to slide through the open end of the; casing andhaving a longitudinal projecting portion adapted to project into the groove, one end of the motor being provided with an elongated shaft that is adapted to project through the boss-like portion and on its free end toreceive a razor head. and an arcuate engaging member on the motor on the side opposite the projecting portion adapted to engage the wall of the chamber.

PETER C. NEILSEN.

REFERENCES. CITED The following references are of recovdiir the le of this patent:

UNITED STATES4 PATENTS" Number Name Datel 2,083,405 Schick June 8, 1937 2,186,786. Jensen. Jan. 9, 1940 2,241,073 staar May e, 1943 2,365,649 Shaw Dec. 19, 1944 2,396,397 TOlmie Mar. l2, 1946