US1659184A - Electric safety razor - Google Patents

Description

Feb. 14, 1928. Y 1,659,184 (3. F. BAILEY ELECTRIC SAFETY RAZOR Original Filed Aug. 31, 1925 2 Sheets-She et 1 a I 46 4 a I v 44 P 24" f 44' "K 2 o V 39 40v 8 1 8 7 Inventor,

Charles FBcziZey B3 M Feb. 14, 1928.

' 1,659,184 C. F. BAILEY ELECTRIC SAFETY RAZOR Original Filed Aug. 31, 1925 2 Sheets-Sheet 2 48 5,2; 52 l g 49 if 53 I 50 Inventor; Charles FBail e] Atiorney.

Patented Feb. 14, 1928.

UNITED STATES:

CHARLES F. BAILEY, OF SAN FRANCISCO, CALIFORNIA.

ELECTRIC SAFETY RAZOR.

Application filed August 31, 1925, Serial No. 53,593.

My invention relates to safety razors and is an improvement on my former safety razor patented August 12th, 1924, under Patent No. 1,504,311.

One object of my invention is to provide an improved electric safety razor of the re volving type, whichwill cut when driven in either direction and which is to a certain extent sel f-sharpening.

Another object is to provide a safety razor of the character described which may be employed with or without the use of lather and which readily may be assembled for use or disassembled for cleaning the razor, and for replacing blades, and the like.

Other objects and advantages will appear hereinafter and while I disclose herein a preferred form of construction, I desire to be understood that I do not limit my invention to such form but that various changes and adaptations may be made therein without departing from the spirit of my invention.

Referring to the drawings which accompany this specification, and form a part thereof:

Fig. 1, is a plan view of my improved razor.

Fig. 2, is a side View of same as seen when looking in the direction indicated by 2 in Fig. 1.

Fig. 3, is a sectional view of the blade and holder parts of my razor, taken on line 3-3 of Fig. 2.

Fig. 4, is a side view of the blade holder of my safety razor.

Fig. 5, is a transverse sectional view of the blade holder taken on line 5-5 of Fig. 4.

Fig. 6, is a transverse sectional View of 118 blade assembly taken on line 6-6 of Fig. 7, is a sectional View of the assembled rIiazor taken approximately on line 77 of Fig. 8, is a transverse sectional view of the assembled razor taken approximately on line 88. of Fig. 1..

Fig. 9, is a plan view of the blade assembly when developed.

Fig. 10, is a transverse sectional view of the blade assembly taken adjacent the middle ring thereof.

arrow The razor, as shown in Figs. 1 to 3 in-- cl-usive, consists of a series of blades fixed together to form a cylindrical blade assembly 16 which assembly is adapted to Renewed January 3, 1928.

cylinder in spaced relation to each other by crimped end rings 20 to which they are riveted and by a flat middle ring 21, having ofiset bends 22 adjacent the blade edges to provide clearance space therebetween. 'Iihe blades are riveted to this middle ring a so.

The blade assembly so formed is adapted to slip over and be held upon a blade holder 23 having an axial tube 24 near the ends of which are fixed discs or wheels 25 and 26. Wheel 25 is provided with an anular flange 27 at right angles to the plane thereof and notches 28 are cut therein to provide clearance for bends 22 in middle ring 20 so that i the latter may freely pass over wheel 25.

Wheel 26 is provided with a slightly tapering annular flange 29, the taper bei toward the opposite end of the holder, so that one of the end rings 20 of the blade as sembly is securely seated thereon when the razor is assembled. One of the end rings 20 is equipped with an inwardly projecting lug 30, as shown in Fig. 6, adapted to engage one of the notches 28 in wheel 25 so as to lock blade assembly 16 on blade holder 23. A thin helical spring 31, surrounding axial tube 24 and having its ends fixed to wheels 25 and 26 as at 32, serves as a cleaner which catches and removes such material as asses through spaces 33 of the blade assem ly to the inner side thereof.

A shell-like bracket 34, preferably of cast aluminum, is secured to the forward end 35 of handle 17 by screws 36 and oppositely disposed spider extensions 37 and 38 are secured to the sides thereof so as to pro'ect forwardly in parallel relation to each 0t er. S ider 37 is loosely attached by a hinge 39 wliile spider 38 is rigidly fixed thereto as by a screw or rivet 40. The centers of the spiders are provided with appertures 41 through which extends a shaft pin 12 fitting within axialtube 24 which tube is adapted to turn thereon. One end of pin 42 is provided with a head 43 to engage the outer face of spider 38 and the other end is notched as at 4A to receive a spring-controlled looking lever 45 which is pivoted to spider 37 as at 46. Hinged spider 37 is thus held in its closed position by pin 42. Washers 47 are riveted to the inner sides of spiders 37 and 38, concentric with appertures 41 therein, to serve as bearings for pin 42.

A second shaft pin l8 with a head 49 extends through opposite apertures in bracket 34 in parallel relation to shaft pin a2 and a sleeve 50 is turnably mounted thereon, the length of said sleeve being somewhat less than the inner diameter of the bracket so that it may be shifted longitudinally on pin 18 for the purpose of reversing the rotation of the blade assembly as will presently appear. A pair of rollers 51 preferably made of rubber, are fixed on sleeve 50 in spaced relation to each other and at equal distances from the ends of the sleeves. A pair of friction discs 52 are also fixed on sleeve 50 between rollers 51 and in contact therewith but in spaced relation to each other as shown in big. 3. Washers 55- are placed on pin 4-.8 outside of bracket 34: and it is held in place by a cotter pin 54: in its projecting end The drive shaft 56 of the motor projects forwardly toward sleeve 50 and has a drive disc or brush wheel 57 fixed on its end which extends between the faces of said friction discs, the diameter of said brush wheel being slightly less than the space between the two friction discs so that it can engage but one of them at a time. A shifting lever 58, provided with a roller-59 adapted to engage the face of either friction disc, has its lower end pivoted to a central lug 60 formed within bracket 34: while its upper end 61 projects through an aperture 62 in the opposite side of the bracket. Aperture 62 has side notches 63 out at each end thereof into which the free end 61 of lever 58 springs and in which it is held until manipulated by a thumb or finger to change its position, it

being understood that lever 58 is so constructed as to provide the necessary resiliency for such action as well as for holding either of the friction discs 52 in operative engagementwith brush wheel 57. The friction discs are kept clean by two wires 64 fixed in the end of handle 17 so as to proect forwardly therefrom, the wires being ent, as shown at 65 in Fig. 7 to press lightly against that part of the disc faces which contact with brush wheel 57.

Air vents 66 are made in bracket 34: which coincide with similar vents 67 in handle 17 for permitting air to circulate about the motor for the purpose of keeping it cool. A cooling fan may also be mounted on the motor shaft within the handle to accelerate such circulation of air.

In operating the razor the electric current is turned on by the usual switch connected in the cord circuit and the motor shaft and brush wheel 57 is caused to'rotatc continuously in one direction. The brush wheel being in contact with one of the friction discs 52 causes it and sleeve 50 to which it is fixed to turn. Rollers 51 also being fixed on sleeve 50 turn with it and cause blade assembly 16 to rotate about shaft pin 42 by frictional contact therewith. The shaving operation is then performed by bringing the convex surface of blade assembly 16 in light contact with the face whereupon one edge only of the several blades constituting the assembly is active in cutting while the other is caused to slide upon the skin in such a manner as to produce a honing action thereon by which these edges are appreciably sharpened. When one set of edges becomes somewhat dulled lever 58 may be operated to shift sleeve 50 longitudinally on shaft pins l8 which action brings the other friction wheel 52 into contact with brush wheel 57, and the direction of rotation of rollers 51 and blade assembly 17 is reversed. The blade assembly may thus be caused to rotate in opposite directions alternately until dulled to such an extent as to be no longer useful. The holder 23 may then be removed from shaft pin 42 by unlocking spider 37 and turning it out of the way. The old blade assembly may then be removed from the holder and a new one slipped thereon.

Having thus illustrated and described my invention, I claim:

1. A rotary safety razor comprising a cylindrical blade assembly having a series of double-edged blades fixed in arallel spaced relation to each other and in diagonal relation to the cylinder axis, a blade holder fitting within said cylindrical blade assembly and adapted to carry it, a handle, a bracket fixed on one end of said handle, said bracket being adapted to support said blade holder and blade assembly so that the latter is rotatable about its axis; driving rollers and friction discs mounted on a common shaft in said bracket parallel to the axis of said blade assembly, said driving rollers being in contact with said blade assembly; a brush wheel mounted on a drive shaft adapted to be driven by an electric motor in said handle, said brush wheel being adapted to engage said friction discs, and means for shifting said friction discs into and out of enga ement with said brush wheel, whereby said blade assembly may be caused to rotate in either direction.

2. A rotary safety razor comprising a cylindrical blade assembly having a series of double-edged blades fixed in arallel spaced relation to each other and in diagonal relation to each other and. in diagonal rela- Ill tion to the cylinder axis; a blade holder fitting within said blade assembly and adapted to carry it, said blade holder having an axial tube coinciding with said blade assembly axis; a shaft pin extending through said axial tube, a handle, a bracket fixed to one end of said handle; oppositely disposed spider extensions attached to said bracket, said spider extensions supporting said shaft pin; a pair of spaced driving rollers fixed on a sleeve shaft within said bracket so as to press against said blade assembly, a pair of friction discs fixed on said sleeve shaft adjacent said driving rollers, a brush wheel between said friction discs in engagement with one of them, said brush wheel being fixed on the driving shaft of an electric motor in said handle, and means for shifting said sleeve shaft longitudinallly to bring one or the other of said friction discs into engagement with said brush wheel, whereby said blade assembly may be caused to rotate in either direction.

CHARLES F. BAILEY.

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