US1272816A - Safety-razor. - Google Patents

Description

G. P. LESLIE.

SAFETY RAZOR.

APPLICATION FILED OCT. 23. 1916.

Patented July 16, 1918.

nnnnnnnnnm v1 erably of such character as to be practically GRAHAM P. LESLIE, OF BOSTON, MASSACHUSETTS, ASSIGNOR T0 JAMES W. LESLIE,

TRUSTEE, OF BOSTON, MASSACHUSETTS.

SAFETY-RAZOR.

Specification of Letters latent.

Patented July 16, 1918.

Application filed October 23, 1916. Serial No. 127,290.

To all whom it may concern Be it known that I, GRAHAM P. IJESLIE, a citizen of the United States of America, and

a resident of Boston, in the county of Suffolk, Commonwealth of Massachusetts, have invented certain new and useful Improvements in Safety-Razors, of which the following is a specification.

This invention relates to safety razors and more particularly to that class wherein the blades are readily interchangeable and prefinflexible yet thin.

An object of this invention is to provide a safety razor that may be quickly and effectively cleaned after using, even though it is not taken apart for the purpose. Another object of the invention is to provide a safety razor with thin yet stilf blades that may be bodily swung for adjustment in such manner that their cutting edges will occupy cutting or shavin positions in relation to the guards,'agreea le to the needs of the various kinds of beards of the users.

A further object of the invention is to pivotally mount the blade or blades in a chamber the walls of which contact with the blades on opposite sides thereof, and only on a line with and adjacent the cutting edges of the blades, thus leaving ample room in the chamber at either side of the blade for adjustment thereof and for the free passage of accumulations and water when cleaning the razor.

Another object of the invention is to provide adjusting means for the blades within the chamber that is operable externally thereof, and in a convenient position for manipulation, and not obstructive.

A still further object of the invention is to. provide a. safety razor of this type with two guards differently constructed and arranged whereby two different cuts are -obtainable by theme thereof, with the same degree of angularity of the blades.

To the attainment of the above objects,

the invention consists in blade clamping plates so constructed and arranged as to provide pivotal points for the blades, and a rest purposes only. Suitable retaining or limiting pins or lugs are employed to insure the proper disposition of the blades when placed in the holder and to position the front and back clampin plates.

The adjustment of tie blades is neatly and effectively arranged, and in such manner that instant adjustment may be attained without the use of tools and without fiexin the blades as heretofore. The blades use are of such form that they are adapted for use in other well-known razors and subsequently will be the subject for design patent.

The invention further consists in certain novel features of constructionand arrangement of parts which will be fully. understood by reference to the description of the drawings and to the claims hereinafter given.

For the purpose ofillustrating the invention, one preferred form thereof is illustrated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the inventlon consists can be variously arranged and organized and that the invention is not limited to the precise arrangement and or- Fig. 5 represents a section on the line 5-5 on F g. 3, showing the front wall or plate positioning means.

; Fig. 6 represents a section on the line 6'-6,

Fig. 3, showing-the blade adjusting device.

Fig. 7 represents a View similar to Fig. 6, showing the blade and adjusting means in another position. v

Fig. 8 represents a section on the line 88, Fig. 3, showing the razor handle which in this instance acts as a clamping instrument for the walls of the razor, between which the blades are pivotally mounted.

Fig. 9 represents a section on the line 99,

Fig. 4, showing means employed to effect relative adjustment of the blades.

Fig. 10 represents a view of the preferred form of blade to be used.

Fig. 11 represents another form of blade adapt-able tothe razor.

Similar characters designate like parts throughout the several figures of the drawmgs. I

Referring to the drawings,

The front or flesh contacting plate 10, herein shown as of concavo-convex formation, has fast therewith the screw stud 11 of such length as to pass freely through the back or guard plate 12 and to be engaged by the internally threaded end of a handle 13 (see Fig. 8).

The guard plate 12 is provided with suitable holes 14 adapted to receive the lugs 15 extending from the front plate 10, said lugs 15.and holes 14 coacting to position the said plates 10 and 12 when the razor is being assembled, as well as acting as retaining lugs for the blades 25-26 to be further described.

While the lugs 15 are herein shown as forming part of the plate 10 it is obvious that they may be pins or similar projections that are riveted or otherwise secured to said plate 10. The back or guard plate 12 between which and the front plate 10 the blades 25-26 are adapted to be pivotally impinged, is provided with the guard portions 1718 (see Figs. 3 and 8). The guard portions 1718 are of two kinds, the portion 17 being toothed as is usual in razors of this type, while the portion 18 is in the form of a bar '19 and situated an appreciable distance in advance of the cutting edge of the adjacent blade.

By the use of two blades and the two forms of guards, it is possible to obtain two different stages of cut, viz., a first or rough cut, and a second or finishing cut, in one instrument, without disarranging the angularity of the blades after the initial setting thereof. The guard 17 extending as it does only a short distance in advance of the cutting edge of the blade 25 enables the user to .present the blade to the flesh at a greater angle than is possible with the blade 26 when said blade and guard 18 are similarly used. This increased angularity of the blade 25 is of great utility for the first or rough cut, and while apparently it would cut close to the flesh, in reality it is necessary to give it this angular increase in order that the first 'cut may be made at all, and this is more especially true of a stifl wiry beard even though it is of comparatively short growth.

The guard 18 is in the form of a bar 19 and is so situated inadvance of the cutting edge of the blade 26 that the said blade will assume a lesser angle to the flesh when presented thereto, and consequently would appear to cutat less depth. By actual experiobtained, for the second or finishing cut,

than when said finishing-cut was made with the uard 17 in advance of its blade 25.

This is due to the fact that the increased distance between the cutting edge of the blade and the uninterrupted surface of the guard, presents the blade to the flesh at a lesser angle, and in its movement over the flesh smooths it of wrinkles, and permits of a barely perceptible .billow of flesh to uniformly roll up behind said guard and in front of the cutting edge of the razor. This particular arrangement and condition of affairs insures a closer cutting of the beard and nearer a right angle theret0,,without the I usual irritating, pulling sensation experienced in the use of other guards differently disposed.

While it is of great advantage to provide a razor with two separate adjustable blades two differently shaped and arranged guards, it will be understood that either of the blades might be dispensed with without impairing its efliciency as a razor.

It will also be understood that a razor with a single blade and guard might be made with but very slight change in the structure herein shown. a

An important feature of this invention is the novel manner in which the blades are pivotally held, and while so held are adjustable to the desired position for the best results.

It will be understood that the adjustment of the blades in this instance is attained by bodily swinging the blade or blades about pivotal points and not by flexing as has been done heretofore.

Rearwardly extending from the front plate 10 (see Figs. 4, 6, and 7) and fast therewith, are the screw studs 30 upon which are revolubly mounted the internally screw threaded elongated finger nuts 31, holes 32 being provided in the back plate 12 through which the said nuts pass freely. The said nuts areshouldered near the left ends thereof and are adapted to engage the sides of the blades 2526 near the back edges thereof.

Referring now to Figs. 4, 5, 9, and 10, it will be seenthat the blades 25-26 are provided with notches 33 that are adapted to be engaged by the lugs 15 which prevent lateral movement of the blades and assure the parallel alinement of the cutting edges of the blades and the guards 1719.

To assemble the razor it will be understood that the handle '13 and back 12 are,

7 blades 2526 at points along lines parallel to and adjacent the cutting edges thereof. The lines of contact of the plates 10 and 12 with the blades 25 and 26 form pivotal points therefor, and are so constructed and disposed that when the clamping action commences, the blades will be swung to the right (see Figs. 5 to 8 inclusive) until their sides adjacent the inner edges 3- contact with the shoulders 35 of the nuts 31. It will be thus seen that the blades will be firmly yet pivotally held by the clamping plates 10 and 12 along lines parallel to and adjacent the cutting edges of said blades, and a back rest is also provided for the blades near their rear edges 34. If this initial setting of the blades is not satisfactory to the user, the nuts 31 may be turned in a direction suitable to position the blades to meet the requirements of the beard to be cut.

The blades 25 and 26 while thin are yet of sufficient thickness to withstand comparatively great strains without flexing, and therefore it has been found unnecessary in practice to relieve the clamping action of the plates 1012 when it has been found necessary to change the angularity of the blades to suit the beard to be cut. This fact coupled with the fact that the thin edged pivotal points of the front plate 10 adapt themselves to the almost infinitesimal change that takes place between the said points, and the coacting pivotal points of the back plate 12, makes the release of the clamping plates 10 and 12 unnecessary.

Figs. 6 and 7 of the drawing show the blades'25 and 26 in different angular posiion, that of Fig. 7 being an extreme position. and one that probably would not be used but is shown to illustrate the wide scope of adjustment possible without resorting to the unsatisfactory method of flexing the blades. In fact, flexing the blades would not accomplish the results obtained by the invention hereinshown and described. 7

It is obvious that if any tendency exists during the shaving operation, to swing the blades, that tendency will be overcome by reason of the blades sides meeting and being held against the shoulder 35 of the nut 31. It is also obvious that with the conditions just mentioned, chattering of the blades would be impossible.

Another important feature of the invention is the simple manner in which relative adjustments of the blades may be obtained if so desired.

Figs. 4 and 9 of the drawing show one means for accomplishing this result, and it will be understood that it is within the possibilities of the invention that either of the blades may be adjusted independently of the other if occasion requires.

Headed screws 40 adjustable in the plate 10 serve the purpose-of holding one of the blades in a predetermined position while the other may, at the will of the user be adj usted to suit the requirements thereof.

This feature enables the most exacting user to adjust the blades for the best results or the especial needs of the beard to be out.

The blade shown in Fig. 10 is the preferred form of blade used in connection with this invention, for the reason that'it is 'applicable to at least two well-known razors and stropping devices. The blade shown in Fig. 11, however, is one that can be made with less waste of material, but is not so well adapted for use in some other makes of razors.

It is not intended to limit the scope of this invention to the use of substantially nonflexible blades, as it is obvious that by the proper manipulation of the clamping and adjusting devices a thin flexible blade might be used with equally good results.

It is believed that the operation and many advantages of this invention will be fully understood from the foregoing description.

Having-thus described my invention, I claim:

1. In a safety razor, a substantially nonflexible blade; clamp plates therefor the bodies of which are substantially nonflexible, one of said plates having a knifelike edge adjacent the cutting edge of the said blade adapted to yield under pressure; a chamber between said clamp plates in which said blade is adapted to swing; means movable perpendicularly to said clamp plates to swing said blade to any desired angle to the inner clamp plate; and means to clamp said plates.

2. In a safety razor, a substantially nonflexible blade; clamp plates therefor the bodies of which are substantially nonflexible, one of said plates having a knifelike edge adjacent the cutting edge of said blade adapted to yield under pressure, said plates being so arranged as to form a chamber in which said blade is adapted to swing with relation to said plates when said plates are held in clamped position; means to swing said blades when said plates are in clamped position; and means to clamp said plates.

' 3. In a safety razor, a substantially nonflexible blade; clamp plates therefor the bodies of which are substantially nonflexible, one of said plates having a knifelike edge between which and the other plate said blade is pivotally mounted; means acting on the rear edge of said blade to pivotally swing said blade relatively to said plates; and means to clamp said plates.-

4-. In a safety razor, a substantiallynonflexible blade; substantially nonflexible clamp plates therefor between which said blade is adapted tobe swung; a chamber be-'.

. nonflexible blades; a pair of substantially nonflexible clamp plates therefor between which said blades are adapted to pivot-ally swing, one 'of said plates being provided with knifelike blade contacting edges adapted to yield under pressure, said blades being adapted to swing when said plates are being drawn into clamping position; means to thereafter swing said blades relatively to said plates; a toothed guar'd on one edge of one of said plates angularly disposed thereto, and a smooth barlike guard situated an appreciable distance in advance of the other edge of the same plate and forming a part thereof, the connecting portions between said bar and plate being angularly disposed to the body of the plate; and means to' clamp said plates.

6. In a safety razor, a substantially nonflexible blade; clamp plates therefor the bodies of which are substantially nonflexible, one of said plates having a knifelike edge adjacent the cutting edge of said blade, said blade being adapted to swing relatively to said plates when said plates are being drawn into clamping position; means to thereafter swing said blade relatively to said plates when said plates areheld stationary relatively to each other; and means to clamp said plates.

7. In a safety razor, a substantially nonflexible blade; substantially nonflexible clamp plates therefor; a chamber bet-ween said plates in which said blade is adapted to swing; means within the chamber adapted to swing said blade, said means extending exteriorly of said chamber; and means to clamp said plates.

8. In a safety razor, in combination, a

front plate; aback plate having guards; a

chamber between said plates; blades pivot- .mally ivotally clamped between said knifelike e ge and said back plate at approximately the junction of said plate and said guard; a chamber between said plates in which said blade is adapted to swing; and

means to clamp said plates; anddevices for varying the angle of said blade relatively to said plates and operable'independently of v said'plate clamping means.

10. In a safety razor, a pair of substantially nonflexible blades; a pair of substantially nonflexible clamp plates between which said blades are adapted ,to be pivotally clamped adjacent their cutting edges; means to limit the swing of said blades when said plates are being drawn into clamping position, said, limiting means being adjustable whereby either of said blades may be swung I through a greater are than the other during said clamping movement; means coacting with said limiting means whereby one of said blades may be swung relatively to the other when said plates are clamped and relatively stationary to each other; and means to clamp said plates.

11. In a safety razor, a pair of substantially nonflexible blades, a holder therefor composed of two substantially nonflexible plates adapted to retain said blades. in pivotal, condition; a chamber between said plates in which said'blades are adapted to swing; means to swing either of saidblades independently of theother; and means to clamp said plates.

12. In a safety razor, a front plate; a back plate; guards on one of said plates; blades pivotally mounted near their cuttin edges between said plates; stops for said Idades; means to position said plates and aline said blades relatively to said guards; means to adjust said blades; and means to clamp said plates.

13. In a safety razor, in combination, a plate having resilient blade contacting edges; aplate having guards at opposite edges thereof; a chamber formed by said plates; blades pivotally clamped between said resilient edges and said guard plate; means within the chamber to swing said blades; and means to hold said plates in con-. tact with said blades.

.14. In a safety razor, in combination, a segmental plate having two resilient knifelike edges; legs extending from said plate; a back plate having difierently constructed oppositely extending guards therefrom; re- 7 ceptacles in said back plate adapted to receive said lugs to posltion said segmental plate; a chamber between said plates; blades pivotally held between said resilient edges which the blades are adapted to rest; and a handle adapted to retain said holder and blades in assembled position.

16.. In a safety razor, a air of blades; a holder adapted to pivotally support said blades adjacent the cutting edges thereof; a chamber in said holder in which said blades are adapted to be swung; -means within said chamber to adjust one of said blades; and means to retain the other blade in a prede termined position.

17. In a safety razor, in combination, a'

front plate; a back plate; blades adapted to be pivotally impinged between said plates; guards extending from said back plate; lugs extending from said front plate and entering said back plate; shoulders on said blades adapted to engage said lugs; means to swing said blades for adjustment; and means to hold said plates and blades in operative position.

18. In a safety razor, in combination, a front plate; a back plate having guards; a chamber between said plates; blades pivotally held adjacent thelr cutting edges by said plates adapted to swing in said chamber; screw studs extending from said front plate into said chamber; revoluble members mounted on said studs against which said blades are adapted to rest; means to aline said blades with respect to said guards; and means to hold said plates and blades in operative position.

19. In a safety razor, a substantially nonflexible blade; a back plate having a guard angularly extending therefrom; a front plate having a resilient knifelike edge; a blade adapted to be normally pivotally clamped between said resilient edge and said back plate at approximately the junction of said plate and saidguard; a chamber between said plates in which said blade is adapted to be swung; an adjustable stop in said chamber adapted to limit the swing of said blade; and means to clamp said blade between said plates.

Signed by me at 4 Post Office Sq., Boston, Mass, this 17th day of October, 1916.

GRAHAM P. LESLIE.

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