US1030023A - Safety-razor. - Google Patents

Description

H. G. SHANNON. SAFETY RAZOR. APPLICATION FILED SEPT.Z0, 1909.

1,030,023, Y Patented June 18, 1912.

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"HARRIS c. summon; or CLEVELAND, onro, ASSIGNOR ro'aonn IE. MURRAY, on cnrcaao, rumors.

SAFETY-RAZOR.

Specification 01 Letters Patent. I Patented June 18, 1912.

AppIication filed September 20, 190B. Serial No. 518,683.

To all whom it may concern:

Be it known' that L'HABRIS C. SHANNON,

- .a citizen of the United States, residing at Cleveland, inthe county of Ouyahogaand 'State of Ohio, have invented a certain new .eut shearingly, and therefore most efiiciently.

The invention consists of" the combination in a safety'razor of a guardplate having.

converging sides with projecting teeth in said sides, which are inclined relatively "thereto respectively, and away from the converglng point of the sidesaa razor blade 3 having cutting edges which converge at similar angles to the sides of said guard plate; a clamping plat-e; 'means for draw- :ing the guard plate and clamping plate to-v gather upon'the interposed blade which is formed to permit of its adjustment for wear between said plates in the direction of a plan view of thelrazorlolade.

line which bisects the angle between the cutting edges and to prevent it from moving. .therebetween otherw1se; wlth such other characteristics of. construction as are shown in the drawing andv are hereinafter described and defined by the claims.

In the drawing, Figure 1 is a central longitudinalseetion of 'a safety razor embodyin the invention. Fig. 2 is a' plan view of the razor as shown in Fig. 1. .Fig. 3 is a bottom view thereof. Fig. 4 is a view from the left side of Fig; 1. Fig. 5 is a central sectional View int-heplane indicated by line 55 on Fig; 1. Fig. 6 is a so that when the razor'bladeis put between theclamping plate and giuardplate it may be clampedgthereby. T is is the conventional clamping'mechanism; and any other suitable clamping mechanism may be substituted. a

The razor blade has a blunt dull point at the convergence of its two cuttin edges 1) b. It has also, extending inward from the intermediate side 6 a slot 6 which is flaring at its outer end. The width ofzthe inner end of this slot is suchthat it will nicely embrace the squared shank a,'-and the depth of the slot maybe such that theblunt corner or apex of said blade may engage behind a flange 0 on the corresponding corner of the guard plate. The acute corner of the clamping plate is also adapted to go behind and engage this same flange c With the construction described, it is not necessary to entirely disconnect the guard plate and clamping plate in order to 'remove or put in a razor blade. The thumb nut D need only be'unserewed far "enough to allow the blade to be moved between said clamping plate and guard plate and over form; but instead of-projccting from said edges at. right angles thereto, they project at a different angle preferably an angle of about 75405 degrees, although the precise Then when the nut D is tightened angle is not material.- These teeth incline.

away from the point of convergence of the sides of the guardand obviously will lie at the same angle to the edge of the razor blade. Therefore, if one using the razor draws it over his face in the direction it willbe most easily moved, i. 6. parallel with the direction in which the teeth extend,-- indicated by the arrow on Fig. 3, the razor blade will be drawn shearingly across the face. Thesev obliquely disposed teeth act as guides when in cont-act with the face,- and help to govern' the direction of movement of the razor.' Moreover, the described I construction is such that both cutting edges of therazor blade may be sharpened many times and ground away a great deal without rendering it unfit for use with the described clampi'ng' and holding devices. For

if, .as the cutting edges are ground away,

' the blunt point is also ground down, then the razor blade may be moved lengthwise to carry this blunt edge against the flange c" or close to it; and then the cutting edges will be restored to their proper relation to the corresponding edges of the guard plate.

Having described my invention, I claim 1. In a safety razor, the combination of a clamping plate having a flat sided shank, and a blunt corner at which is a flange, a razor blade having a slot extended into the same from one side, and having, a'blunt end for engagement with said flange, a toothed guard plate having a blunt corner for engagement with said flange, and means engaging said shank for drawing the clamping plate and guard plate together upon said blade.

2. In a safety razor, theeombination of a guard plate having converging sides; projecting teeth on said sides, inclined relatively thereto, respectively, and away from the converging pointof the sides; a razor blade having cutting edges which converge at a similar angle; a clamping plate; means for drawing the guard plate and clamping plate together u on the interposed blade;

said blade being ormed to permit of its adjustment for Wear, between'said plates, in

the direction of a line which bisects the angle between the cutting edges and to prevent it from moving therebetween otherwise.

3. In a safety razor, the combination of a guard platehaving converging sides on which are projecting teeth, inclining relatively to their respective sides and away I from the converging point of the sides, a

razor blade having cutting edges which converge at a similar angle, a clamping plate, means for drawing the .guard plate and clamping plate together upon the interposed blade,said clamping plate being provided.

with the flat-sided shank, andthe blade. havlng a slot cut in from the base end toward the angle at which the cutting edges converge said slot being of such width as'to nicely embrace the flat shank.

4. In a safety razor, the combination of a toothed guard-plate the sides ofwhich converge toward a blunt point, an integral flange on said point projecting outwardly, an aperture in the guard plate, a clamping plate with converging sides and a blunt point adapted to lie behind said flange, and provided with a flat sided shank adapted to pass into the aperture of the guard plate, a razor blade having converging edges and a blunt end adapted to lie behind said flange and provided with a longitudinal slot extending into the broad end of the blade with its sides embracing the flat sides of the clamping-plate shank, with means for clamping the guard plate and the clamping plate together upon said blade.

In testimony whereof, I hereunto atiix my signature in the presence of two witnesses.

HARRIS o. SHANNON.

Witnesses:

E. L. THons'roN, H. R. SULLIVAN.

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