US1826600A - Safety razor - Google Patents

Description

Oct; 6, 1931. I J. G. COLEMAN 1,826,600

SAFETY RAZOR Filed May 26, 1930 2 Sheets-Sheet l J *ylNVEETOR ATTORNEY Oct. 6, 1931. J. G. COLEMAN 1,826,600

SAFETY RAZOR Filed May 26, 1930 2 Sheets-Sheet 2 p INVENTOR .B

I 2 ,A'ITORNEY Patented Oct. 6, 1931 UNITED ST T S PATENT OFFICE.

JACQUES G. COLEMAN, OF WOODMERE, NEW YORK, ASSIGNOR, BY MESNE ASSIGNHENTS,

TO GILLETTE SAFETY RAZOR COMPANY, OF BOSTON, H ASSAGHUSEITS, .A-CORPORA- TION OF DELAWARE SAFETY nazon Application filed May as, 1930. Serial .R'o. 45539.2.

The present invention relates to that class of safety razors in which a'flexible blade is clamped between a guard member and a blade backing member, positioning studs being provided to retain the blade and backing member in operative relation to the guard. The invention pertains more particularly to that type of the above-mentioned class of safety razors wherein, instead of the usual cylindrical positioning studs, non-cylindrical studs are provided on the blade holder, said last-mentioned studs being adapted to be seated in a longitudinal slot in the blade, the purpose, of this arrangement being mainly to lend increased flexibility to the blade for clamping in the blade holder, so as to overcome the danger of the blade cracking or breaking in a lengthwise direction while being bent or under tension.

One of the objects of the invention is to provide a safety razor of the type mentioned in which the cutting edges of the blade may be conveniently adjustedin relation to the longitudinal edges of the guard member, so as to vary, at will-,the bite of the blade or to compensate for the loss in width re-sharpening of the blade.

Another object of the invention is to produce a safety razor of the character referred to, wherein the cutting edges of the blade may be readily set at acute angles to the longitudinal edges of the guard member, so that, in

by repeated drawing the blade over the face in the ordinary manner. the cutting edge attacks the hair diagonally or gradually along a given line, thereby easing the action ofthe razor and practically eliminating the pull of the/ implement.

A further object ofthe invention is to so construct theimproved blade that it may be used in connection with blade holders including non-cylindrical studs and also with blade holders having cylindrical studs, such as those of the ordinary Gillette type razor. Still a further object of the invention is g to provide a simple and eflicient blade holder and blade construction which is capable of manufacture on a commerclal scale, or 1n other words one which is not so diflicult' to make as to be beyond the reasonable cost 4 construction of parts hereinafter described,. pointed out in the appended claims and-i11us-,

trated in the accompanying drawings, it be:

ing 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 from the spirit or sacrificing any of the advantages of the invention.

Two of the many possible embodiments of the invention are illustrated in the accompanying drawings, in which Figure 1 is an end view ofia raz or constructed in accordance with the present invention; Fig. 2 is a section taken on line 2-2 of Fig. 1; Fig. 3 is a section taken on line 33 ofFig. 2, part of the backing member being shown in plan view; Fig. 4 ais a top plan view of the guard member of the improved razor: Fig. 5 is a bottom plan'view of the blade backing member of the construction; Fig. 6 is a plan viewof the improved blade; Fig. '7 is a section similar to the one shown in Fig. 3 with the blade inv adjusted position; Fig. 8 is a section taken on line 8-8 of Fig. 7; Fig. 9 is a-section similar justed position; and Fig.'13 is a plan view of the blade associated with the structures illustrated in Figs. 10 to 12, inclusive.

Referring now first to Figs. 1 to 9, inclusive, of the drawings the numeral 13 indicates a guard member, provided with suitable guard teeth 14 in its opposite longitudinal edges and having a central hole 15. In its longitudinal axis, the said guard member is of the two sets are equidistantly located from the transverse center line of the guard member, said line passing through the center of the hole 15. The minor axes of the said openings are disposed in the longitudinal center line of the guard member and their ma or I axesextend transversely of the guard memher in arallel relation to one another and, preferably, at right angles to the longitudinal axis of said guard member) The guard openings 16 are adapted to receive positioning studs 18 which extend from the backing member 19. The transverse cross-section of each positioning stud corresponds to the configuration of the openings 16 to insure proper alignment of the backing member with the guard'member. Between the studs 18 is disposed on the backing member a screw-threaded pin 20, adapted to pass through the hole 15 in the guard member and to engage'with a threaded socket 21 in a handle 22, for the well-known purpose. The p0,- sitioning studs 18 are adapted to pass also through a central longitudinal slot 23 in the blade 24, which is of the thin flexible type having two cutting edges 25. The blade slot 23 is provided with a central transverse'enlargement 26 and with a transverse enlargement 27 adjacent each of itsends. The central transverse enlargement 26 is adapted to register with the center hole 15 in the guard member of the razor and is adapted to receive the pin 20. 'Transversely of the blade the length of the slot enlargement 26 exceeds considerably the diameter of the,pin 20, to permit shifting of the blade on the I guard member toward either of the longitudinal edges thereof. I

The blade slot 23 is provided in its longitudinal' edges on either side of each enlargement 27 with a notch, those nearer the central enlargement 26 being designated by the numeral 28 and those nearer the transverse blade edges being designated by the numeral 29. Thenotches 28 are in alignment with the guard openings 16 and the notches 29 with the guard openings 17 when the blade is mounted on a razor. I

The blade is provided on ,each transverse edge thereof with a projection 30, extending beyond the transverse edges of the guard member (Fig. 3) when the blade is positioned thereon, the said projections constituting 'means by which the blade may be conveniently handled without danger of injuring the hands of the user.

The enlargements 27 of the blade-slot-are provided for the reason" that, although the blade describedis particularly adapted to co enlargements is such as to receive cylindrical positioning studs of the backing members of the type of the ordinary Gillette razors on the market.

the blade is laced upon the clamping member, the positioning studs 18 and pin 20 of the latter being extended through the blade slot 23. The guard member is then placed upon the blade, the positioning studs 18 being extended through the openings 16 in the guard member and the pin 20 passed through the guard hole 15. Thereafter the handle 22 is engaged with the pin 20 and partly screwed home. The blade is then centered in the blade holder and the handle screwed home, whereby the elements are clamped together in the manner shown in F igs'. 1 to 3, inclusive, of the drawings. If it is intended to shift the blade toward either longitudinal edge of the guard member, the said blade is In assembling the elements of the razor,

graspedby its projections 30 and moved to i the desired posltion shown for instance in Figs. 7 to 9, inclusive, of the drawings, be fare the handle is fully screwed home (Fig. 9

The modification illustrated in Figs. 10 to 13, inclusive, differs from the one above described in that the'positioning studs 18 on the blade backing member 19 thereof cooperate with the blade notches 29 and the openings 17 in the guard member. Furthermore, the slot 23 in the blade 24: is provided in each of its longitudinal edges with only two notches 28 and 29, two notches 28 and 29 being disposed adjacent one slot -enlargement 27, and'two notches adjacent the other slot enlargement 27. By reason of this arrangement the blade is centered automatically upon the backing member 19 when placed thereon (Fig. 10). a From an inspection of Fig. 12 it will be noted that the cutting edges of the blade may be extended at an acute angle to the longitudinal edges of the guard member, one of the positioning studs 18' being engaged with a blade notch 29 in one longitudinal edge of the slot 23 and the other positioning stud with a blade notch 29 in the opposite longitudinal edge of said slot. Of course, the construction illustrated in Figs. 1 to 9, inclusive, permits of such arrangement also. However, the angle of inclination in such case is larger because the positioning studs 18 are disposed nearer to one another than the studs 18. In Fig. 12 of the draw ings the blade is shown in its outermost position. The angle of inclination may be varied from the largest angle shown in Fig. 12 to parallel relation of the blade cutting edges to the longitudinal edges of the guard. From the foregoing it will be noted that fthe guard member is the same in both con structions illustrated in the drawings, and is 55 operate ,with the blade holder illustrated in thus adapted to co-operate with either one on saidblade including a screw-threaded spindle on one of said clamping members, said blade having a central longitudinal slot provided with a plurality of transverse en-- largements, and positioning studs on one of said clamping members adapted to enter said blade slot in alignment with said enlargements, said spindle passing through said blade slot and said transverse enlargements being of such contour that the blade may be displaced angularly around said spindle, as a fulcrum, with reference to said blade clamping members.

2. In a safety razor according to claim 1, said blade slot being provided with a central transverse enlargement, said enlargement having a major axis exceeding that of the diameter of said spindle, whereby said blade may be shifted transversely on said clamping members in relation to the longitudinal edges of the latter to bring either one of its cutting edges closer to a longitudinal edge of a clamping member in parallel relation to the last-named edge.

3. A safety razor, comprising blade clamping members, a blade adapted to fit between said members, means to clamp said members on said blade including a screw-threaded spindle on one of said clamping members, said blade having a central longitudinal slot provided with aplurality of transverse enlargements, one enlargement being formed at each end of the slot and forming, in combination with the ends of the blade, an elon- Si ed at New York city, in the county of New ork, and State of New York, this 16th day of May, A. D. 1930.

JACQUES G. COLEMAN.

gated flexing hinge. at each of the blade ends,

and positioning studs on one of said clamping members adapted to enter said blade slot in alignment with some of said enlargements, said spindle passing through said blade slot and said transverse enlargements being of such contour that the blade may be both shifted and displaced angularly around said spindle, as a fulcrum, with reference to said blade clamping members.

4. In a safety razor according to claim 3, i

said blade slot being provided with a central transverse enlargement, said enlargement having a major axis exceeding that of the diameter of said. spindle, whereby said blade may be shifted transversely on said clamping membersin relation to thelongitudinal edges of the latter to bring either one of its cutting edges closer toa longitudinal edge of a clamping member in parallel relation to the lastnamed edge.

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