Safety razor

Application filed March 11, 1927, Serial 1

The object of my invention is to permitthe use in a safety razor of blades properly intended therefor and to prevent the use of blades not manufactured in accordance with 5 the proper construction.

I have illustrated my. invention embodied in the type of safety razor in which a blade holder and a handle are pivotally connected together in such a way that the holder may io extend transversely with respect to the avis of the handle for shaving and may extend at an angle to the first named position, such as substantially parallel with the handle, for insertion of blades in the holder and their 15 removal therefrom.

In the particular embodiment of my invention illustrated I provide movable projections on the blade holder operative by the handle and so positioned when the blade 20 holder and the handle are in blade receiving position as not to obstruct the insertion of a blade in the holder, the parts being so arranged that when the. blade holder and handle are adjusted to shaving position the han25 die will cause the projections to enter apertures or impressions in the blade that are in register with said projections for retaining the blade in the holder. By preference I provide means for causing the aforesaid pro30 jections to move laterally for pushing the blade edge into shaving relation to the guard when the projections are in proper apertures or impressions in the blade so that a blade not having such proper apertures or impressions 35 will not be retained in shaving relation to the guard.

A feature of my invention is that if a blade not authorized by the manufacturer of my improved safety razor and not having aper40 tures or impressions to receive the aforesaid projections be inserted in the blade holder the handle and blade holder cannot be located in shaving position,· as such blade will obstruct the projections and prevent the 45 blade holder and the handle from being properly located respecting each other for shaving, and whereby if an unauthorized blade not having the proper apertures or impressions to receive the aforesaid projections be inserted in the holder the said projections

To. 174,458. Renewed November 10, 1930.

will not push the blade to and retain its cutting edge in proper shaving relation to the guard.

My invention comprises novel details of improvement that will be more fully herein- ¢5 after set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part hereof, wherein

Fig. 1 is a side view of my improved safety eo razor showing the parts in position for shaving;

Fig. 2 is a section on line 2, 2, in Fig. 1;

Fig. 3 is a side view showing the parts in a different position from Fig. 1;

Fig. 4 is a section on line 4, 4, in Fig. 3; big. 5 is a partly sectional side view illus• trating the parts in position for insertion of a blade in the blade holder;

Fig. 6 is a section on line 6, 6, in Fig. 5; 70

Fig. 7 is a partly sectional plan view ;

Fig. 8 is a perspective detail illustrating the blade engaging projections, and

Fig. 9 is a face view illustrating the blade and projections cooperative therewith. 75

Similar numerals of reference indicate corresponding parts in the several views.

A blade holder is indicated at 1, shown pivotally connected at 2 with the reduced portion 3α of a handle 3. The blade holder g· is shown provided with a relatively flat seat la to receive a blade 4, with the blade resting on the seat fbr shaving purposes opposed by a spring-acting retaining member 5 carried by the holder member 1 for keep- 85 ing the cutting edge of the blade in shaving relation with respect to the guard Ιό of the blade holder. The free edge of the retainer 5 is spaced a suitable distance from seat la to slidablv receive the blade there- 90 between and detachably retain the blade upon its seat. At 6 are movable projections carried by the blade holder adapted to enter apertures or impressions 4α in the blade to . retain the latter in shaving relation to 95 the guard. The projections 6 are shown extending laterally from a plate 7 that is located beneath the seat la of the blade holder in opposition to the adjacent end of the handle to be operated thereby, the projec- 10?·

1,823,870 the plate 7 laterally slidable along wall 1' beneath seat la and provide means cooperative with the handle to cause the plate 7 to be moved from the position shown in Fig. 4 to the position shown in Fig. 2 to push ₇₀only a proper blade edge into shaving relation to the guard and to retain it in such position. One or more springs 8 are secu red at 9 in recesses 10 in holder member 1 and enter apertures 11 in plate 7, (Fig. 7), said ₇₅spring normally tending to push p’ate 7 away from guard lb, as in the position shown in Fig. 4. The plate 7 is provided with a lug 7' depending in front of the adjacent end portion 3α of the handle to be en- ₈₀gaged thereby. The end portion of the handle, substantially at one side of pivot 2, is provided with a recess 3' adapted to receive the lug 7' when the parts are in the ' positions shown in Figs. 3,4, 5 and 6, where- gff by the springs 8 may push the plate 7 rearwardly respecting the guard, and the surface portion 3 of the handle is adapted to engage lug 7', with the parts in the position shown in Figs. 1 and 2, to push plate 7 with 90 its projections 6 in the direction of the guard. The portion 3d of the handle, at the edge of the recess 3', is beveled or inclined in such a way as to ride against the lug 7' when the parts 1 and 3 are turned from the posi- 95 tion shown in Fig. 5 to the position shown in Fig. 1 to permit the adjacent end of the handle to operate against the lug.

When a blade is to be inserted in the blade holder the parts will be placed in the position 10c shown in Fig. 5 so that the springs 7α will cause movement of the plate 7 to withdraw the projections 6 from interfering with the sliding of a blade along seat la. The blade will be pushed along the seat from one end 105 toward the other, with the heel of the blade guided by the longitudinal stop or wall 1 of the blade holder, (Fig. 4), so that the apertures 4α of the blade will be brought to rest in register with the projections 6, at which no time the lug 7' of plate 7 will register with the recess 3' of the handle and the springs 8 will retain the plate 7 pressed rearwardly. When the blade holder is rotated, upon the pivot 2 the edge portion 3c of the handle will 115 engage plate 7 and push it toward wall 1' thereby causing the projections G to enter the apertures 4α of the blade, (Fig. 3), and further rotation of the blade holder'respecting the handle wil cause the inclined portion 3d 120 to engage lug 7' and cause the plate 7 to be pushed toward the guard, thereby simultaneously moving the blade edgewise toward the guard to present its cutting edge in shaving relation thereto, with the parts as shown 12b in Figs. 1 and 2. So long as the parts are in the last named position the blade will be retained in shaving relation to the guard, and with the parts in such position the blade cannot be removed from or a new blade in- ic tions 6 being slidably fitted within openings lc in the blade holder that communicate with the blade seat, (Fig. 2), whereby said projections are guided and plate 7 is re, tained in operative position. The blade holder is recessed on one side providing a wall at 1', on the side opposite the seat la, along which wall the plate 7 bears. The plate 7 is shown provided with outwardly ₁₀ extending spring-like fingers or tongues 7α that bear against the wall 1' tending normally to force the plate in the direction away from said wall and toward the adjacent portion of the handle. When the parts are in ₁₅ the position shown in Fig.. 5 the projection will be withdrawn from, the plane of seat la, or substantially so, to permit the blade to slide along said seat, the sides 3& of the handle being of such width relatively to 20 the location of the pivot 2 that the plate 7 may fit between the wall 1' and a side 3& of the handle when the blade holder is substantially parallel with the handle, as in Fig.

5. The outer end 3c of the handle is shown 25 curved or rounded and extends sufficiently far beyond the pivot 2 as to engage the plate 7 so that when the blade holder is in the shaving position shown in Fig. 1 said end 3c of the handle will bear against plate 7 30 to push it toward or against wall 1' and thereby to push the projections 6 through apertures 4α of the blade. When the parts are in the position shown in Figs. 1 and 2 the blade edge will be in shaving position 35 respecting the guard. ' To remove a blade from the holder the latter and the handle will be placed substantially in the position shown in Fig. 5, which will permit the springs 7α to push plate 7 toward the handle 40 to withdraw the projections 6 from the apertures 4α of the blade.

The apertures or impressions 4α of the blade are shown in Fig. 9 arranged in the nature of a designation, such as a trade45 mark, word or symbol, to designate the manufacture of the blades. Such apertures 4α and the projections 6 are so related that said projections will only pass through proper designations in the blade. If a blade not 50 having such apertures be inserted in the blade holder the latter and the handle cannot be adjusted to shaving position, (Fig. 1), because when an attempt is made to turn the blade holder from the position 55 shown in Fig. 5 to the position shown in Fig.’ 1 the projections 6 will bear against the metal of the blade and thereby will be obstructed, since the plate 7 will oppose the end portion 3c of the handle ana prevent 80 the same from being turned to shaving position.

As a further means to prevent the use in the razor of a blade not having apertures or impressions,, such as 4α, positioned to Ί5 properly receive the projections 6, I make

X,8£

Serted in tbe holder because of the location of the projections 6 beyond the seat la. In case a blade not having apertures, such as 4α, be inserted in the holder it cannot be retained e in shaving position nor can the blade holder be adjusted to such position because the projections 6 would engage such blade, as before stated, and a blade not having proper designation apertures 4α to receive the pro10 jections 6 would not 1 e presented and retained by said projections in proper relation to the guard.

The blades may be inserted in the blade holder in any suitable way. I have illus15 trated the handle 3 as arranged to retain a blade magazine 12 containing a stack of blades 4 in such position that said blades may be successively pushed into the blade holder by means of an ejector 13 slidable in 20 the magazine. The magazine is shown in box-like form having an inner chamber or space 12α for. the blades to lie flatwise, the magazine having a cover 14 which is removable to admit the blades into the magazine.

I.have shown the side walls of the magazine as provided with grooves 12& in which the cover slides, (Fig. 6). Between the cover and the blades a spring 15 normally bears against the blades to keep· them in stacked relation. By pulling out the cover the blades ^ailj u ^sP^r^ⁿS may be placed in the magazine and the cover may be slid back to retain the blades. At one end the magazine has an opening or slot at 12' to permit, length wise 35 ejection of the endmost blade, the latter slidably resting against the outer wall 12 of the magazine. The ejector 13 is slidable along the wall 12. The inner end of the ejector is maintained in line with the endmost blade of the stack, opposite the spring 15, and in register with the opening 12', whereby when the ejector is pushed inwardly a blade will be ejected from the magazine, (Fig. 5). The ejector is shown provided with a stop 13', 45 which may be punched out of the metal of the ejector, slidable in slot 12c in wall 12 of the magazine, adapted _to engage end portions of the wall to limit the motion of the ejector and to prevent it from* being pulled so from the magazine and from pushing the blade too far into the blade holder. The magazine is adapted to be detachably supported upon the handle 3 so as to be located in juxtaposition to the end of the blade holder

1 for insertion of blades from the magazine into said holder. For such purpose the handle is shown provided with longitudinal grooves 3e slidably receiving spaced projections or ribs 16 on spaced projecting wallsT6' of the magazine that receive the handle therebetween, and a screw 17 carried by one of said walls is adapted to engage the handle for operatively retaining the magazine. When the magazine is assembled on the handle and the blade holder is turned to a

3,876 3 position substantially parallel with the handle, as indicated in Fig. 5, the ejector may be pushed inwardly to push the lowermost blade from the magazine into the blade holder, with the heel of the blade guided 70 ^Wadd holder to locate the blade m the holder with the apertures 4α in proper relation to the projections 6, said blade at such time ejecting a blade from the holder.

he magazine may be removed from the 75 handle for shaving purposes. The construction of the magazine illustrated is substantially the same as that set forth in my appliJanuary 15, 1927, Serial No.

101,002. 80

An advantage of my invention is that the blade holder is only adapted and intended tor use with blades having the apertures or impressions 4α, which may be a designation such as a trade-mark or other symbol denot- ⁸⁵mg the original manufacturer of the safety razor and the blades, so that blades not having such apertures or designation apertures cannot be fitted in proper shaving relation to the guard, whereby to protect the ori<rina] ⁹⁰manufacturer from the use in his razors of unauthorized blades manufactured by others

My invention is not limited to the details of construction set forth, as the same may be varied, within the scope of the appended ⁹⁵claims, without departing from the spirit of my invention.