US1734394A

US1734394A - Safety razor

Info

Publication number: US1734394A
Application number: US314947A
Authority: US
Inventors: Muros Joseph
Original assignee: FREDERICK E PERRY
Current assignee: FREDERICK E PERRY
Priority date: 1928-10-25
Filing date: 1928-10-25
Publication date: 1929-11-05
Anticipated expiration: 1946-11-05

Description

J. MUROS SAFETY RAZOR Nov. 5, 1929.

Filed 0G13. 25, 1928 INVENTOR i j ATTORNEY Patented Nov. 5, 1929 UNITED STATES PATENT l OFFICE JOSEPH MUROS, OF NEW YORK, N. Y., .ASSIGNOR TO FREDERICK E. PERRY, or' NEW YORK, N. Y.

SFETY RAZOR,

The present invention relates to safety razors, and more particularly to a magazine razor of the type which employs blades in stacked relation and feeds them successively to shaving position, the blade fed to shaving position ejecting at the same time the used blade from the blade holder.

One well recognized defect of razors of this type consists in that its feeding means, which is usually in the form of a plunger, is adapted to jam, the result being that the razor, when jammed, must be returned to the factory, to be taken apart by experienced and skilled working men. In order to more clearly understand this defect, attention is called to the fact that the stack of blades in the magazine of the razor is under the action of a spring, the topmost blade of the stack being forced by said spring into contact with the inner 20 surface of the razor handle, in which the magazine is disposed, when the feeding plunger is withdrawn from the handle. If now, on the feeding stroke of the plunger, the topmost blade 4is moved toward the blade holder and the feeding stroke of the plunger is not completed, but the plunger is again withdrawn from the handle, the inner end of the blade below the topmost blade iS forced by the said spring against the inner surface blade is engaged by the plunger with the result that the latter becomes locked and cannot be moved either forward or backward. In other Words, the razor is jammed.

The main object of the present invention is to provide a safety razor of the type mentioned in which jamming of the feeding mechanism is effectively prevented.

With these and other objects in view, which will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrangement and construction of parts hereinafter described, pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the appended claims, without departing is adapted to of the handle wall. If now the feeding oper-. ation is resumed, the blade below the topmost from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated in the accompanying drawings, in Which Figure 1 is a front elevation of a safety razor constructed in accordance with the present invention; Fig. 2 is a side elevation thereof; Fig. 3 is a longitudinal section taken through the razor, on a larger scale, the blade holder being shown in elevation in bladereceiving position; Fig. 4 is a perspective' view of the magazine for holding a stack of blades; Fig. 5 is a bottom plan view of a portion of the feeding plunger; Fig. 6 is a section taken on line 6 6 of Fig. 5; and Fig. 7 1s a section taken on line 7 7 of Fig. 3, on a still larger scale.

Generally speaking, the invention consists of means for so confining the blades in the magazine that the spring co-operating with sa1d magazine cannot project the same into a pos1t1on to be engaged by the feeding finger of the plunger, in combination with means on the plunger which disengages the rear end of the topmost blade in the magazine from said confining means so that the said rear end be projected into the path of the feeding finger of said plunger, the lastmentioned means being so arranged that disengaging of the rear end of the topmost blade in the magazine from the confining means takes place at the completion of the feeding stroke of the plunger.

Referring now to the drawings, the numeral 10 indicates the handle of the razor. the same being hollow and, preferably, quadrangular in transverse cross-section. To the upper end of the handle is fixed a standard 11, and on the latter is mounted, by means of a pivot pin 12, the blade holder 13 of the razor. T his holder is adapted to turn on the said pivot from the position shown in Fig. 1 of the drawings into the position shown in Fig. 3 of the drawings, in which it is in alignment with the handle or, in other words, it forms a. continuation thereof. The upper end of the handle is closed by the enlarged portion 14 of the standard, as clearly appears from Fig. 3 of the drawings, while its lower 'relation to the side wall 30.

end is open, to permit of insertion thereinto of the feeding mechanism, the magazine support, the magazine and the spring co-operating with the latter, as will be more fully described hereinafter.

The blade holder does not form part of the present invention, and, therefore, a detailed description of the same vseems to be unnecessary. It is sufficient to say that it is in the form of an oblong body provided with a blade supporting surface 15, with which co-operates a blade clamping member 16 for fixing the blade 17 in position upon the blade supporting surface in proper relation to the guard 18. The blade is what is commonly lrnown as a wafer blade, having a single cutting edge 19.

The bore 20 of the .handle is quadrangular in transverse cross-section and has fitted into it a magazine support 21, which is in the form of a channel member fixed in position within the said handle. On this magazine support is slidably arranged a feeding plunger 22, which is also in the form of a channel member, it being provided with means, not shown,'for limiting the outward movement thereof on said magazine holder.`

To the outer end of theplunger is fitted a knob 23, in the form of a ring, to facilitate manipilating of the plunger and serving also as a stop for limitingthe inward movement thereof. f

The bladesv are supplied tothe purchaser ready for insertion into the magazine holder, they being stacked in a magazine 24 which is adapted to slide endwiseand fit snug into the magazine holder. With the magazine cooperates a spring 25, carried by a plug 26, the said plug having an enlarged outer end 27 Vfitting the knob 23. For the purpose of X- ing the plug and spring in proper relation to the stack of blades, the spring is provided with a projection 28 which is automatically seated in an aperture 29 in the magazine holder when the plug is inserted intothe handle after the magazine has beenplaced there= into.

The magazine comprises a side wall 30,

end walls

31 and 32, a bottom 33, and

anges

34 and 35 on the

end'walls

31 and 32 respectively, the said flanges extending in parallel The bottom 33 is provided with an opening 36, through which the spring 25 projects, as clearly shown in Fig. 3of the drawings. The end wall 32 is somewhat lower than the end wall 31, and

on the latter are formed two wings 37, which project a slight distance over the open top of the magazine. These, wings are spaced,

their justaposed parallel edges39 being in aiignment with the. edges of a notch 40 in .the

end wall 31. The edges 39 of the wings eX- tend in parallel relation to the longitudinal axis of the magazine, 4 of the drawings.` The thickness o f each as clearly shown in Fig;

wing is somewhat less than that of a razor blade, for the purpose hereinafter to be explained. The spring 25 bears, as above stated, against the stack of blades, so that they are constantly being pressed against the wings 37 and against the web 41 of the feeding plunger, and also against the side 42, adjacent the said web, when the feeding plunger is movedon its outward stroke, as will hereinafter clearly appear.

The web 41 of the plunger is provided at its inner end with a feeding finger 43, and in alignment with the latter is formed in the enlarged portion 14 of the standard 11 a discharge opening 44 of a size to accommodate a single blade, said discharge opening registering with the blade supportingsurface of the blade holder when the latter is swung on its pivot pin 12 into the position shown in Fig. 3'of the drawings, in which it forms a continuation of the said handle. Adjacent the discharge opening, there is formed in theenlargement 14 a recess 45 of a size to accommodate the end of a'razor blade' (see Fig. 3). 0n the inner face of the web 41 of the feeding plunger is provided a projection 46, adapted to enter thenotch 40 in the end wall 31 of the magazine and to slide between the spaced apart wings 37 on said magazine. The

said projection is so located on the feeding plunger that it enters the notch 40 between the spaced apart wings 37 immediately before the feeding stroke of the plunger is completed. In alignment with the projection 46 is formed in the plug 26 a longitudinal groove 47, so as to permit sliding of the feeding plunger in relation to the said plug in both directions.

The magazine with the blades therein is wrapped and forms a package of blades as sold to the user. ln order to charge the razor vwith the magazine containing a stack of blades, the plug 26, with its spring 25, is removed from the razor, the wrapper removed from the magazine and the latter slid into the handle. After this, the plug and the spring are inserted, the latter passing through the opening 36 in the bottom of the magazine against the innermost of the stack of blades, as clearly shown in Fig. 3 of the drawings.

When the magazine is inserted in the manner stated into the razor handle, it is obvious that the rear end portion of the topmost blade bears against the inner faces of the wings 37 of the magazine, while the remainder of the topmost blade is forced by the spring against the web 41 of the feeding plunger. When now theplunger is taken hold of by the knob 23 and pulled out of the handle as far as the construction permits, the rear end portion of the topmost blade is still confined by the wings within the magazine, while the remainder of the topmost blade is caused to bear, by the spring, against the inner face of the side 42 of the handle. Consequently,

when the plunger is moved on its inward or feeding stroke, the finger 43 thereof will not engage the topmost blade, so that the topmost blade Will not be fed toward the discharge opening of the handle. However, immediately before the feeding stroke of the plunger is completed,.the projection 46 passes through the notch 40 in the magazine end'wall 31 between the wings 37, engaging the topmost blade and feeding the same forward a slight distance until its forward end portion is stopped by the end wall of the recess 45. `When now the blade holder is swung around on its pivot pin 12 into the position shown in Fig. 3 of the drawings and the feeding plunger is again pulled out of the handle as far as the construction permits, the topmost blade is forced against the inner face of the side 42 of the handle, whereby its rear end portion is brought into the path of the feeding linger 43, so that, when the said feeding finger is then moved on its feeding stroke, the said topmost blade is fed through the discharge opening 44 onto the blade holder. At the same time, however, the blade below the top blade is advanced immediately before the completion of the feeding stroke of the l plunger in the manner above described. It is obvious that any new blade that is fed onto the blade holder acts at the same time as the ejecting means for a used blade thereof.

The wings 37 are thinner than an indi vidual blade to permit the feeding finger to engage a blade when it is once fed by the spring 25 against the inner face of the wall 42 of the handle, it being obvious that the blade then projects beyond the magazine. Attention is also called to the fact that the end wall 32 of the magazine is lower than the end wall 31 thereof. lIhe purpose of this arrangement is to permit of advancing of the topmost blade in the magazine toward the recess 45.

From the foregoing it appears that each blade is fed in two stages to the blade holder. During the first stage of movement the blade is slightly advanced toward the blade holder, a distance sufficient to disengage its rear end portion from the wings or blade holding means of the magazine, so as to permit the said blade to be shifted by the magazine spring into a plane outside of the magazine, where it can be engaged by the feeding finger of the plunger. During the second stage of movement the blade is fed into operative position onto the blade holder. It will be noted that, inasmuch as the first stage of movement commences immediately before the feeding stroke of the plunger is completed and is finished simultaneously with the completion of the feeding stroke, jamming of the razor cannot take place.

Vv'hat I claim is:

1. A razor including a handle provided with a discharge opening, a magazine within said handle adapted to hold a stack of blades, a spring co-operating with said magazine for moving the blades out from said magazine into position to be fed, means for advancing a blade toward said discharge opening afterv on saidadvancing means for disengaging the topmost blade of the stack from said engaging means at the completion of the feeding stroke of said advancing means.

2. A razor including a handle provided with a discharge opening, a magazine Within said handle adapted to hold a stack of blades, a spring co-operating with said magazine for moving t-he blades out from said magazine into position to be fed, means for advancing a blade toward said discharge opening after being expelled from said magazine, means for engaging the topmost blade of the stack and preventing the same from being moved by said spring into position to be fed, and means on said advancing means for disengaging the topmost blade of the stack from ysaid engaging means at the completion of the feeding stroke of said advancing means.

3. A razor including a handle provided with a discharge opening, a magazine within said handle adapted to hold a stack of blades, a spring co-operating with said magazine for moving the blades out from said magazine into position to be fed, means for advancing a blade toward said discharge opening after being expelled from said magazine, means formed on said magazine for engaging the topmost blade of the stack and preventing the same from being moved by said spring into position to be fed, and means on said advancing means for disengaging the topniost blade of the stackfrom said engaging means at t-he completion of the feeding stroke of said advancing means.

4. A razor including a handle provided with a discharge opening, a magazine within said handle adapted to hold a stack of blades, means for moving the blades out from said magazine into position to be fed, and means for advancing a blade toward said discharge opening after being expelled from said magazine and for partly moving the topmost blade within said magazine in the same direction at the completion of the feeding stroke of said advancing means.

5. A razor including a. handle provided with a discharge opening, a magazine within said handle adapted to hold a stack of blades, a spring co-operating with said magazine for moving the bla-des out from said magazine into position to be fed, means for advancing a blade toward said discharge opening after being expelled from said magazine, and means independent of said advancing means dering said preventing means inoperative at for preventing a blade from being moved from said magazine into. position to be fed ivhile a blade is Within said discharge opening.

6. A razor including a handle provided with a discharge opening, a magazine Within said handle adapted to hold a stack of blades, a spring co-operating With said magazine for moving the blades out from said magazine into position to be fed, means for advancing a blade toward said discharge opening after being expelled from said magazine, and

means for preventing a blade from being.

moved from'said magazine into position to be fed until the preceding blade has been completely discharged from said handle.

7. In a razor accordin to claim 6, said last-mentioned means being made integral with said magazine.

8. A razor according to claim 5, comprising means on said advancing means for rendering said preventing means inoperative at the completion of the feeding stroke of said advancing means.

9. A razor according to claim 6, comprising means on said advancing means for renthe completion of thefeeding stroke of said advancing means.

10. A razor including a handle provided with a discharge opening, a magazine within said handle adapted to hold a stack of blades, a spring co-operating with said magazine for moving the blades out from said magzine into position to be fed, Wings on said magazine projecting partly over the open top zine, means engaging the topmost blade of the stack and preventing the same'from being moved by said spring into position to vbe fed, and the means on said advancing means adapted to disengage the topmost blade fromsaid engaging means only at the completion of the feeding stroke of saidadvancing means.

Signed at New York city, in the county of New York, and State of New York, this 24th day of October, A. D. 1928.

JOSEPH MUROS.

thereof and engaging the topmost blade of the stack, said magazine being provided in its transverse top edge' with a notch and said 'Wings being disposed on the sides of said notch in spaced relation, means for advancing a blade toward said discharge opening after being expelled from said magazine,and a projection on said advancing means adapted to pass through said notch for disengaging the topmost blade of the stack from said Wings at the completion of the feeding stroke of said advancing means.

l1. A magazine for safety razors comprising a container having an open top into which a stack of blades is adapted to be placed, one

end Wall of said container being lower than