US1999200A - Safety razor - Google Patents

Description

Amin m, 1935 LNAGYH www@ SAFETY RAZOR Fil'ed March '7, 1934 Patented Apr. 30, 1935 UNITED STATES SAFETY RAZOR HLouis Nagy, Detroit, Mich., assigner of one-half to Stephen F. Illalach, Detroit, Mich.

` Application March '7, 1934, Serial No. 714,486

Claims.

This invention relates to a safety razor.

It is an object of the invention to provide a new and novel construction of razor in which the comb is of a dual type, associated With a double edged 5 thick bodied blade, the comb and blade being readily tilted to vary the angle of the cutting edge of the blade.

It is a further object of the invention to provide means Within the handle of the razor cooperable with the comb to vary the tilting action of the comb upon rotation of the handle.

t is a still further object of the invention to provide novel tilting means for a razor comb which embodies few parts of simple construction, readily assembled, and which is liable in a minimum degree to derangement.

Additional objects, advantages and features of invention will be apparent from the following description considered in conjunction with the accompanying drawing; nevertheless, it is to be understood that the invention is not confined to the disclosures, being susceptible of such changes and modifications as dene no material departure from the salient features of the invention as eX- pressed in the appended claims.

In the drawing:

Figure 1 is a longitudinal sectional view of a razor constructed in accordance with my invention.

Figure 2 is a front elevation, partly in section.

Figure 3 is a longitudinal sectional View of a modification illustrated in Figure 1.

Figure i is a fragmentary front elevation of the razor, partly in section.

Figure 5 is a cross section on the line 5--5 of Figure 4.

Figure 6 is a cross section on the line 6-6 of Figure 3.

Figure '7 is a cross section on the line 'i-l of Figure 3.

Figure 8 is a cross section on the line 8--8 of Figure 3, and

Figure 9 is a plan view of the blade.

Heretofore, in the construction of razors, it has been the practice to provide blades of very thin steel which are flexed upon securement thereof to the comb of the razor, and while such razors are more or less satisfactory, the most ecient blade is one having a substantial body, since such blade may be properly tempered to maintain a proper cutting edge. Obviously, a thick blade cannot be flexed to obtain the necessary angle to effect a smooth, clean shave, and I have therefore devised a unique blade holder which is adjustable to present the cutting edge at the most advantageous angle.

In carrying out my invention I provide a head it including the usual construction of dual combs l i. The head iii has a pair of ears l2 at opposite ends thereof to Which arms I3 of a yoke i4 are (Cl. Ell-12) pivotally connected by pintles l5 and a handle IE is formed as an integral part of the yoke. It will thus be seen that the head i@ is swingingly connected with the handle.

The head it further includes a pair of lugs l] projecting from the outer face of the head it and comprise extension portions i8 lying parallel with the body it and spaced therefrom a distance slightly greater than the combined thickness of a blade I@ and retainer plate 2li, for a purpose now to be explained.

The blade i9 is formed of heavy, tempered steel, having cutting edges i9 and a pair of slots 2l extend longitudinally thereof adapted to receive respective lugs i'i therethrough, and the retainer plate 2t similarly slotted as indicated at 22. In assembling the blade and retainer plate upon the head, the slots 2i and 22 of the blade and retainer plate are aligned and presented over the lugs Il and then given an edgevvise sliding movement in the direction of the lugs so that the extensions it will engage over a portion of the retainer plate 2Q. In order to more readily engage the plate 2E! by the lugs il the underside of the extensions I8 may have a slight taper, as indicated at 23. From the foregoing, it will be readily seen that the blade i3 will be securely held upon the' comb head IG.

The construction of head and blade securing means above described is embodied in both forms of the invention herein disclosed, although other means of securing the blade to the head may be employed.

Attention is now invited particularly to Figures l and 2 of the drawing wherein I have illustrated means for tilting and securing the head l0 to one side or to the other of the handle i6. kThe handle it is shown as of tubular formation of the required length and adjacent the outer end thereof the interior diameter of the tube is reduced as at Zfi, forming an annular seat 25. A tubular shaft 2t is slidably and revolubly disposed within the handle it, and is reduced in diameter as indicated at 2l, to fit within the bore 28 of the reduced portion 2t. A helical spring 29 is positioned upon the reduced portion of the shaft 2t, and bears upon the shoulder t@ and the annular seat 25.

The shaft 26 projects beyond the tubular handle i@ a short distance and upon the projecting portion of the shaft a sleeve 3i is secured thereto by means of a screw 32, extended into impinging contact with the shaft 26. The sleeve 3l has a bore 33 of a diameter to freely receive the end portion of the handle i6 therevvithin, as clearly shown in Figure l.

The shaft 26 is of a length to contact the head le, and in order to cause a tilting movement of the head, the shaft 25 terminates a cam member 35i in abutting relation with the head. The cam dit is shown as formed as an integral part of the shaft 26 and includes lateral extensions 35 and 36 terminating in cam faces 3l. The cam faces are arranged at an angle with respect to the shaft 26, and it will therefore be apparent that upon rotation of the shaft by means of the sleeve 3|, the cam 34 as an entirety will be rotated, and since the head I0 is in abutting relation with the cam the head will be caused to` swing on the pivots l5. Thus the head lil will be tilted to an angle corresponding to the position and inclination of the surfaces of the cams, and a complete rotation of the shaft 26 will cause the head i@ to assume an inclination opposite to that shown in Figure 1.

For the purpose of enabling cleaning of the razor after use, the shaft 26 is retracted by an outward pull upon the sleeve 3|, compressing the spring 29, and by a slight rotation of the shaft 25 one of the cam faces V3l may be seated,` upon one of the lugs 3S formed upon the inner faces of the yoke 4. Thus the cam 34 will be securely held against contacting engagement with the head I0, so that cleaning of the razor will be permitted. With release of the cam from engagement with the lug 38 the spring 29 will force the shaft 25 outwardly again to position the cam in engagement with the head lil.

In Figures 3 to 8 a modification of the invention is illustrated, and in this form, the head iii is pivoted to the arms of the yoke as previously described, but the handle I6 is shown as a tube of the same diameter throughout its length but at the base of the yoke arms |4- and extending across the bore 39 of the handle, there is a spacer bar 453. This bar 49 is shown as a separate member from the handle, but preferably is securely seated and may be soldered, as at 4| in the base 0f the yoke. The bar il@ divides the bore 39 into twe semi-circular passage-ways, and in each of the passage-ways there is longitudinally slidable shaft members 42 and 43. rIhe shafts t2-(i3 have a semi-circular formation corresponding to the bore 39 and a plane straight face 413 contacting the sides of the bar 4U. It will be apparent that the bar 40 prevents rotation of the shafts 42-43 but free longitudinal movements will be permitted, as will be presently explained.

The shaft 42 is slightly less in length than the shaft 43, and at a point approximately midway of the shaft 42 there is formed a series of lefthanded screw threads 45 and the shaft 43 is provided with screw threads 45 having right handed pitch, these threads occurring upon the shaft at the lower-extremity thereof and extending a substantial distance inwardly thereof. rThe shafts 42-43, where the screw threads occur, have a semicircular formation and when arranged in opposed relation denne a bore having threads of opposite pitch. Within the bore thus defined by the shafts 42-43 there is arranged a shaft 41, this shaft having screw threaded portions 48 and 49 corresponding to respective threads 45 and 46.

The shaft ll extends beyond the handle I6 and has xed thereto by a set screw 5S an operating knob 5|. The knob includes a reduced portion 52 seated within the bore of the handle l". An annular groove 53 is formed in the reduced portion 52 Vand receives a screw 5d. The screw 54 may have a rounded end whereby free rotation of the shaft 41 will be permitted yet retaining the knob against withdrawal.

The ends of the shafts 42-43 adjacent the head terminate in oppositely disposed wing members 55, each of which is provided with cam members 55 extending at right angles thereto and in contacting relation with the back Wall of the head |0. v

In adjusting the inclination of the head I0, rotation of the shaft 41 by the knob 5| in a right hand direction, the shaft 43 will be moved outwardly in the direction of the head I0 causing the cam associated therewith to engage the head, tilting the same to the degree desired. Rotation of theshaft 4l in a left hand direction will retract the shaft 43 and move the shaft 42 outwardly so as to engage and tilt the head I0 to the angle desired. d

In both forms of the invention it will be possible to vary the inclination of the head |0 by rotation of the knob members 3| or 5|, and it will be noted that the cutting edges i9 may be properly set to secure the most eiiicient cutting angle, without the need for exing of the blade.

I claim:-

l. A razor comprising a head member having parallel projecting ears, a tubular handle member having arms pivotally connected with the ears, a revoluble shaft journalled within the handle member, a cam carried by the shaft and in contacting relation with the head, spring means urging said cam into engagement with the head,

and a sleeve revolubly supported by the handle members on the yoke, a tubular handle fixed to said yoke, a revoluble shaft journalled within the handle, a cam carried by the shaft and normally in contacting relation with the head, spring means urging the cam into engagement with the head, a sleeve revolubly supported by the handle and keyed to said shaft, said shaft being retractable against the tension of the spring and rotatable to position the cam behind one of the lug members.

3. A razor comprising a head member, having parallel projecting ears, a yoke member having an arm pivotally connected to respective ears, a tubular handle fixed to said yoke, a pair of shafts slidably supported within said handle, the shafts having concave portions, screw threads formed in the concave portions, the threads of one shaft having a pitch opposite to that of the other shaft, a shaft revolubly supported within the handle and having threaded portions corresponding to the threads of the first two named shafts, and said first two named shafts having cam members in bearing contact with said head, and means for rotating the revoluble shaft.

4. A razor comprising a swingable head member, a handle connected therewith, an angular cam member revolubly supported by the handle, said cam member having contact relation with the head, and means for revolving the cam member whereby to tilt and hold the head at various angles of inclination.

5. A razor comprising a swingable head member, a tubular handle pivotally connected thereto, a shaft revolubly supported in the handle, means carried by the handle for moving the shaft, said shaft having an angular cam face in contacting relation with the head whereby to tilt the head to various inclinations upon movement of the shaft.

LOUIS NAGY.

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