US1479690A - Safety razor - Google Patents

Description

Jan. 1, 1924 1;479,690

A. ANGST SAFETY RAZOR Filed Jan. 5, 1923 Patented Jan. 1, 1924.

UNITED STATES ADOLI ANGST, OF SGHAFFHAUSEN, SWITZERLAND.

SAFETY RAZOR,

A pplication filed January 5, 1923. Serial No. 610,871.-

To all whom it may concern: Be it known that I, ADOLF ANGST, a c1t1- zen of the Republic of Switzerland, residing at Schafl'hausen, Switzerland, have invented certain new and useful Improvements in Safety Razors, of which the following is a specification, reference being had therein to the accompanying drawing.

The subject of the present invention is asafety razor having a blade exchangeably mounted on a holder and a handle pivotally connected to said blade holder. According to the present invention the blade holder is provided with guide means comprising a ard rod arranged in front of the cutting edge of the blade and a guide plate arranged at the rear of the cutting edge, said guide means being at some distance from the cutting edge. Further a pivot connection is interposed between the blade holder and the handle which permits of an automatic adjustment of the blade holder relatively to and inde ndently of the position of the handle, t e axis of the pivots coinciding with the axis of the guard rod and a frictional resistance being provided influencing the relative turning movement between blade holder and handle.

Some parts of the blade holder may also serve as holding means for a blade when the latter is to be resharpened, whereby said parts ensure that the blade is held at the proper angle against the grinding surface.

In comparison with other known safety razors the safety razor according to the present invention shows the advantage that the blade will automatically adjust itself to the proper cutting position and independently of the position of the handle, and in jurin of the skin when shaving is thereby practlcally excluded.

A constructional example of a safety razor according to the present invention is illustrated on the accompanying drawings, in which:

Fig. 1 is an end view, and

. Fig. 2 shows in a side view part of the apparatus.

F1 3 is a view in the direction of the arrow TH in Fig. 1 and shown on a smaller scale.

Figs. 4 and 5 show parts of the safety razor in the operative position for resharpening the blade, and

Fig. 6 shows the application of the safety razor.

.4, the rod 11 and the edge of the The apparatus illustrated comprises a blade holder rovided with a plate 1 on wh1ch the bla e 2 is supported. The latter 1s held 1n position by means of a curved clamping piece 3, a guide plate 4 being arranged above the piece 3 and provided with two studs 5 projecting through perforations 1n the blade 2 and in the clampin piece 3. The guide plate 4 is further provi ed in its center art with a threaded pin 6 with whlch t e nut 7 is in engagement for tightenlng the clamping iece 3. The holder plate 1 1s bent 1n sue a way that the cutt ng edge 8 of the fiat blade 2 stands off the bent portion 9 of the holder plate 1. A slot 10 1s arranged in the bent portion 9 and a guard rod 11' is provided above the slot. The guard rod 11 is ri idly fixed in arms 13 of a fork 14 and the ho der plate 1 is provided with brackets 12 in which the rod 11 is rotatably mounted. The fork 14 is provided with a tapped socket into which the rod part 15 of the handle is screwed. The arms 13 of the fork 14 forming part of the bandle are springy and press in a resilient manner against the brackets 12, whereby a certain frictional resistance is generated in the pivot connection between blade holder and handle. The rod part of the latter consists of two parts screwed together, the shortened parts permit of a compendious packing of "the whole apparatus.

In Fig. 1 the apparatus is illustrated with its parts in the operative position for shaving. When the apparatus is moved along the skin the edge of the guide plate part 9 act as guides to the blade holder. The cutting edge 8 of the blade 2 is adjusted by means of tightening the nut 7 more or less that it is in or approximately in the straight line w-b indicated in Fig. 1. This adjustment may be facilitated by providing the top face of the nut 7 with an index mark, such as indicated at 17 in Fig. 3 and adjusting said mark to points corresponding to the imagined figures on the dial of a Watch, for instance the adjustment of the index mark 17 in Fig. 3 would correspond to XII on a watch. By means of this arrangement the adjustment of the blade edge which has proved most satisfactory is quickly performed again when the apparatus has been dismantled for cleaning purposes after use.

When the apparatus is .pressed against the skin during shaving the latter will assume the shape of a wave and the hairs are cut 0H from the wave so that it is not necessary to keep the skin stretched during the shave. Owing to the pivot connection between blade holder, and handle the blade holder adg'usts itself automatically to the proper cutting positions, for instance into the positions l and H illustrated 1n Fig. 5, relatively to-and independently of the posit on of the handle. The limits between whlch this adjustment takes place are indicated by the lines a-4Z) and (I -b 111 Fig. 1.

In order to resharpen or strop a cutting edge of a used blade the latter is gripped between the clamping piece 3 and the guide plate 4:, a plate, for instance an old blade 2' which has been made blunt, being inserted between the guide plate 4 and the blade to be resharpened and below the cutting edge of the latter which is not to be resharpened, as is shown in Figs. 4c and 5. The blade is then moved along the weavy line as indicated by the arrow 1V in Fig. 5 over an even surface 16, for instance of leather or paper and covered with a grinding material, the nut 7 serving as a handle. The cutting angle of the edge of the blade 2, which corresponds to the respective angle of new blades, is maintained by the provision of a stud 18 inside the tapped part of the nut 7 which bears on the pin 6 when the nut is tightened to clamp the blade to be sharpened. In this manner no special ability is required for attaining a proper resharpening of used blades.

I claim:

1. A safety razor comprising in combi nation a blade holder and a blade exchangeably mounted on the former, guide means fixed on said blade holder and comprising a guard rod arranged in front of the cutting edge of the blade at some distance from said edge, and a handle pivotally connected to said blade holder, the axis of the pivot coinciding with the axis of said guard rod.

2. A safety razor comprising in combination a blade holder and a blade exchangeably mounted on the former, guide means fixed on said blade holder and comprising a guard rod arranged in front of the cutting edge of the blade at some distance from said edge, a handle pivotally connected to said blade holder, the axis of the pivot coinciding with the axis of said guard rod, and means adapted to generate a frictional resistance influencing the turning motions of the blade holder relatively to the handle in said pivotal connection.

3. A safety razor comprising in combination a blade holder and a blade exchangeably mounted on the former, guide means fixed on said blade holder and comprising a guard rod arranged in front of the cutrevaeeoting edge of the blade and a guide plate in the rear of the {cutting edge, the guide means being arranged at some distance from said edge, and a handle pivotally connected to said blade'holder, the axis of the pivot coinciding with the axis of said guard rod.

4. A safety razor comprising in combination a blade holder and a blade exchangeably mounted on-the former, guide means fixed on said blade holder and comprising a uard rod arranged in front of the cutting e ge of the blade at some distance from said edge, brackets on said blade holder in which said guard rod is rotatably mounted, and a handle havin a fork shaped end in which said guard ro is rigidly secured to provide for a pivotal connection between blade holder and handle.

5. A safety razor comprising in combination a blade holder consisting of a plate, a clamping piece and means to press the clamping piece against a blade inserted between the former and the plate, the latter having a bent portion and a slot provided therein, guide means fixed on said blade holder and comprising a guard rod arranged in front of the cutting edge at some distance from said edge and above said slot, brackets on said plate in which said guard rod is rotatably mounted, anda handle having a fork shaped end in which said guard rod is rigidly secured to provide for a pivotal connection between the blade holder and handle.

6. A safety razor comprising in combination a blade holder consisting of a plate, a clamping piece and means to press the clamping piece against a blade inserted between the former and the plate, the latter having a bent portion and a slot provided therein, guide means fixed on said blade holder and comprising a guard rod arranged in front of the cutting edge at some distance from said edge and above said slot, brackets on said plate in which said guard rod is rotatably mounted, and a handle having a fork shaped end in which said guard rod is rigidly secured to provide for a pivotal connection between blade holder and handle, the arms of the fork being springy to press against said brackets and to generate thereby a frictional resistance influencing the turning motions of the blade holder relatively to the handle in said pivotal connection.

7. A safety razor comprising in combination a blade holder consisting of a plate, a clamping piece and a nut cooperating with a stud on said plate for pressing the clamping piece against a blade inserted between the former and the plate, guide means fixed on said blade holder and comprising a guard rod arranged in front of thecutting edge and a guide plate in the back of the cutting edge, the guide means being arranged at some distance from said edge, said plate,

clamping piece, nut and guide plate forming also the means for holding a b ade on being resharpened, brackets on said plate in which said guard rod is rotatably mounted, and a handle having a fork shaped end in which said guard rod is rigidly secured to provide for a pivotal connection between blade holder and handle, the arms of the fork bein springy to press against said brackets an to generate thereby a frictional resistance influencing the turning motions of the blade holder relatively to the handle in said pivotal connection.

8. A safety razor comprising a blade holder, a handle for the latter, and a guard rod 16 on the holder constituting a connecting member between the handle and holder.

9. A safety razor comprising a blade holder a guard rod journaled on the holder in front of the cutting edge of a blade mounted on the holder, a handle, and means connectin(g1 the handle in fixed relation to the guard ro and in frictional relation with the blade holder, whereb the latter will automatically position the b ade at an advantageous cut- 25 ting angle relative to the handle.

In testimony whereof I aflix my signature.

ADOLF AN GST.

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