US1732458A - Safety razor - Google Patents

Description

Oci- 9- RIR. BOYLES ET AL. 1, 8

SAFETY RAZOR Filed. June 26, 1925 iffer/ 54,

safety razors.

blade to Patented Oct. 1929,

nan-n: mum nouns m nnwann slim-can summer, or

s'r. nun, mason sum RAZOR Application illed June as, 1925. mm Ho. earns.

-'Our invention relates to improvements in In the present use of razors of the safety type a blade is either removed from a holder employed in shavin' and transferred to, a specia honing and s arpening holder or retained in the originalholdcr wherein the stropping only of the blade may be effected.

An ob ect of ourinvention is to provide a simple, durable, eflicient and inexpensive safet razor, the blade of which, without detac inent from its holder, may be not only effectively stro pad but honed through the medium of sai older.

Another object of the invention is to provide a safety razor including a holder and a blade structure hinged thereto, said structure bein designed to provide for the uniform app ication of the cutting edge of the the surface of a stone or strop and to prevent the mutilation or marring such surface in the sharpening of the blade thereon.

A. further ob'ect is to supply a holder and 'a blade pivote therein together with yielding means to swing the blade into a certain I sition with respect to the holder and yieldmglK hold said blade in such osition, wherebly t e blade may be effective t rough the medium of the holder, in the stro ping and boiling of said blade. w th the back of the razor;

' scriyition, the invention resides in the nove the foregoing and other objects in view, which will appear in the following deination andarrangement of parts and com in the details of construction hereinafter'described and claimed.

In the drawings, Fi 1 is a perspective view illustrating the rout of a razor embodying my invention, said view showing the blade of the razor'in position for shaving'; Fig. 2 is a perspective view taken, from Fig. 3 is also a perspective view of the razor, the blade ard being swung back to. free the blade; ig. 4

is a-central sectional view of the razor with the parts relatively positioned as in- Figs.

' 1 and'2; Fig. 5 is a similar view, the parts having that 6 is an elevational view of. therazor illu's-w relationshown in Fig. 3;; Fig.

y manipulated,-

tratin" the manner in which the-blade is applie to a strop or hone and Figs. 7 and 8 are fragmentary'perspective views of alternate blade structures. f

Reference being had to the drawing wherein likeparts arefdesignated by similar reference characters throughout the several views, it will be seen that we provide a holder or handled, oke-like frame A including a shank 10 an a pair of branch sup orts 11 turned on said shank at'ri ht 'ang es with respect thereto, ahandle 12 ein secured at one end to the shank 10 at the mi dle thereof. A blade structure 13 carried by the holder A includes a single edged blade 13 hinged at its ends to the supports 11, trunnions 14 on the, ends of the bla e13 being fitted in complementing a ertures in the tips of the supect the hinged or pivotal con ports 11 to e blade and holder. Formed nection between f on the blade 13 (Figs. 1-6) back of each 6- inclusive) .comprises a roller 16' for bladeinclining co-operation with a shar ening surface. This roller 16, which in e ect constitutes an anti-frictional enlargement at the rear of the blade 13 is equipped at itsends with journal pins 17, said pins being journaled in cars or bearings 18 reaching rear- 1 wardly from said blade 13.. The back of the blade structure shown in Fig; 7 is formed by rolling or beadin the blade stock, as at 16 while the back 0 the blade structure illustrated in Fig. 8 simulates, as at 16*, the back of the usua old style non-safety razor.

The ends ofthe blade 13 forwardly of the trunnions' l i are recessed as at 19 and provided with studs 20. The extremity ofone branch 21' of a U-shaped tension spring 21 is caught over one of said studs '20 and the other branch of said spring 21 is likewise connected with the second stud 21, the body of said U shaped sprin having a medial loop '21 formed therein an caught under a hook 22 secured to the frame shank 10.

A blade holding and guard member 0 comprises a metallic stamping including a body 23, a cam portion 24 at one side thereof, arms 25 at the-opposite side, blade receiving clips I 26 at the tips of said arms and a guard lip 27 betweensaid arms.

Trunnions 28 formed at the ends of the body 23 and inserted in complementing apertures in frame supports 11 hingedly connect the guard member O to the holder frame.

, movement of said blade is not interfered rigidly secured by said with by said member. In the first or operative position of the guard member C, the corners at the sharpened edge of the blade 13 are sheathed in the clips 26, said blade being guard member against inging movement on the holder A and in relative position'for shaving, the cutting edge of the blade 13 in such position being guarded by the lip 27 of the guard member. In the second or inoperative osition of the uard member O, the lip 2 abuts the handle 12 (Fig. 5), said member in such position being entirely clear of the hinged blade structure B.

When the razor is not in use the guard member C preferably occupies its inoperative position (Figs. 3 and 5). I Freed from said member 0, the blade 13 swung by the spring 21 into protected position (Fig. 5) withinthe plane of the frame A and yieldingly held in such position.

To sharpen the cutting edge of-the blade 13, the back oftheblade structure B is pressed against .a strop or hone in a light sweeping stroke over the sharpening surface, the handle 12 being held slightly inclined with respect to the sharpening surface. The direction of movement of the razor over the sharpening surface of course must accord with the nature of such surface, that is to say, in honing, the sharp edge of the blade leads and, in stropping, said edge trails. Half turns may be imparted to the handle 12 between each working stroke to present the opposite beveled portions of the cutting edge of the blade 13 alternately to the sharpening surface. In meeting the sharpening surface, the roller 16 or other form of back is the first portion of the blade structure B to strike said surface, the sharpened edge of the blade being thereafter brought against said surface in the sharpening stroke. Upon lifting the razor from a strop or hone, the spring 21 immediately swings the blade 13 into its proplane of the holder f (Fig. 5) Thus quickly retracted to a certain tec-ted position in the relative position in .the frame, the blade 13 is uniformly self-positioned preparatory to each sald bearings sharpening stroke thereof, the result being that the user may effect the sharpening strokes as rapidly as desired. In strapping a blade, a user properly should keep the handle 12 from passing beyond the perpendicular in the direction of the working strokes over a strop, otherwise the blade may tilt to advance the cutting edge thereof. A safe-guard to save a strop against injury when the handle 12 is improperly inclined lies in the shoulders 15 on the blade 13. These shoulders, limiting the tilting of the blade 13 in said frame A, act within reasonable limits to revent the blade from cutting a strop, when said blade is accidentally turned in a direction to advance the cutting edge in the sharp ening stroke.

The roller 16 is tapered from the middle thereof toward its ends to insure the uniform application of the entire length of the cutting edge of the blade 13 to a strop or stone. W'ere the peripheral surface of the roller to be cylindrical instead of tapered toward its ends from the middle, any slight inaccuracy in construction throwing the roller out of parallelism with the cutting edge of the blade might result in unequal pressures of cutting edge portions against a strop or hone. The tapering of said roller, however, is in degree allowing for a diametric dimension at the ends of said roller sufiiciently great to overreach the roller bearings or ears 18, whereby are prevented from-gouging a sharpening surface upon the inaccurate presentation thereto of the blade structure.

Changes in the specific form of our invention, as herein disclosed, may be made within the scope of what is claimed without departin from the spirit of our invention.

TIaving described our invention what we claim as new and desire to protect by Letters Patent is:

1. In a razor, a yoke-like frame including a shank and spaced supporting branches thereon, an elongated blade pivoted at its ends between and to the tips of said supporting branches, shoulders on the blade for engagement with said supporting branches to limit the swing of the blade in both directions, bearings tapered toward the ends thereof and mounted in said bearings, a blade holding and guard member hingedly mounted on said supporting branches, a leaf spring mounted on the frame shank and co-operating with said guard blade holding at the back of the blade, a rollerspring acting, when the blade is blade in suchposition, .and a handle secured to the shank of said frame.

holder, a blade having a shar 2. In a razor, a yoke-like frame including a shank and spaced supporting branches thereon, an elongated blade structure hingedly mounted between the tips of said supporting branches, and including a blade with a cutting edge thereon, a blade holding and edge guard member carried by the frame and movable into and out of position engaging and securing the blade angularly of the plane of the yoke-like frame, and a spring interposed between theframe and blade structure, saidspring acting, when the blade is free from said member, to swing said blade into the plane of the frame and thus yieldingly hold thesame with the cutting edge of the blade in protected position within the frame, and .a handle for the frame.

3.- In a razor, a frame. a blade structure hingedly mounted in said frame, yielding means for swinging the blade structure to locate the edge of the blade in a certain posi-. ti on with respect to and protected within the frame and to yieldingly hold the same in such position, a guard member for engaging the blade and holding the same against the action of said yielding means with the edge thereof in another position with respect to the frame; said member being movable to disengage the blade and clear the same in its swinging movements under the action of said yielding means.

4. In arazor, a yoke-like frame including a shank and spaced supporting branches thereon, an elongated blade pivoted at its ends between the tips of said supporting branches, means a'ssociated'with theblade for inclining the .same under application thereof to a sharpening surface, a member mounted on the frame and movable into and out of posit-ion guarding the edge of the blade, said member in said position serving rigidly to secure the blade against swinging movement on the frame. a tension spring fastened to the frame and to the blade, said spring acting, when the blade is clear of said member, to swing said blade into the plane of the frame and yieldingly hold the same in such positioma shoulder on the blade for engaging with one of said supporting branches to limit the swing of the blade against the action of said spring, and a handle for the frame. f

5. In a safety razor, a blade manipulatin ened edge an hingedly mounted in the hol er, means 3155.01-

' ciated with the blade for inclimn the same on a sharpening surface, said b adebeing swung on an axis between the sharpened edge and the blade inclinin means, and yielding means for swinging the blade to locate the cutting edge thereof in edge in such position.

a certain position with res ectto the holder, saidmeans serving 7 yielding y to hold said blade: with its cutting hinged at its ends to said frame, a roller for engagement with a ried by the blade at the back thereof, a blade holding and guard member hingedly mounted on the frame, yielding means adapted to hold said member in operative and in inoperative positions, yielding means interposed between the frame and blade for swinging the latter 'to locate the same in a certain angular position with respect to the former and yieldmgly to hold said blade in such position, and a handle for the frame.

7 In a safety razor, a frame, a blade endwise hingedly mounted between the cutting edge and back thereof on said frame, said back being provided with a sharpening surface engaging member, a blade securing and guard member hmgedly mounted on the frame. a sprlng co-operatmg w1th' said member to hold the same in position guarding the blade and securing it against hinging movement on the frame, also to hold said member in position clear of the hinged blade, a spring interposed between the frame and blade for swinging the latter to locate the cutting edge thereof in a certain position with respect to the former and yieldingly to hold said blade with its cutting edge in such position, and a handle for the frame.

8. In a safety razor, a frame, a blade hingedly mountedto swing in said frame, holding and frame and movable to free the blade, ield ingmeans to swing the blade on the and yieldingly hold it in a certain relative angular positionwith the cutting edge thereof within and protected by said frame, and a handle for the frame. Y

9. In a safety razor, a frame, a blade hingedly mounted to swing in said frame, said blade being adapted to move from a guarded position wi" bin said frame to an exp sed positlon for contact with an abrasive member,

resilient means for swinging the blade normally into guarded position and means on 'said blade fdr engagement with the abrasive member to swing said blade from. a guarded position to operative position on said abrasive member.

10. In a safety razor, a frame, ablade hingedly mounted to swing in said frame, blade being adapted to move from a guarded position within said frame to an exposed position for contact with an abrasive member, resilient means for swinging the bladenormally into guarded position, and means (in said blade for engagement with the abrasive member to swing said blade from a guarded position to operative osition on said abrasive member, said blade being adapted to-swing in either direction and said engaging means operating with said sharpening surface carablade guard member mounted on the said to bring said blade in engagement abrasive member to sharpen. either side of said blade.

I11. an article of the described, a

i ho1der,a blade hingedly mountedtherein, the

holder being relatlvely thin as compared to the width of the blade and forming a ard adapted to shield the cutting edge the lade 6 in one of its positions w1th respect to the holder, said blade being adapted to be swung forth and back through the guarded position thereof to expose the cutting edge of the blade at either side of the holder, yielding means 10 for swinging the blade into said guarded 130- sition from oppositelydisposed locations with respect, thereto, said means serving yieldingly to hold said blade in said guarded posi.-- tion. 1

. In testimony whereof, we have signed our names to this specification.

RALPH REGINALD BOYLES. L EDWARD SANFORD STANLEY.

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