zoom_out loupe Click on this icon or hold down the shift key to magnify while moving over the patent image. zoom_in
home Home help_outline Help
   
parts e g c d A j h i B m l C b e a f Fig1 Fig1 b m l C e a g c A j k h B x-x x-x x-x Fig2 Fig2 g e d C m l f A j i h B Fig3 Fig3 m C e l b c g d a f A i j k h B Fig4 Fig4

Single Edge Razor

PatentUS901537

InventionRazor

FiledSaturday, 28th March 1908

PublishedTuesday, 20th October 1908

InventorAlfred Koscherak

LanguageEnglish

CPC Classification:   
B26B21/16
  • B26B21/16
    Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge
  • B
    Performing Operations; Transporting
  • B26
    Hand Cutting Tools; Cutting; Severing
  • B26B
    Hand-Held Cutting Tools Not Otherwise Provided For
  • B26B21/00
    Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
  • B26B21/08
    Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
  • B26B21/14
    Safety razors with one or more blades arranged transversely to the handle

For a full resolution version of the images click here

A PDF version of the original patent can be found here.

United States Patent Office.

Alfred Koscherak, of New York, N. Y. Razor.
No. 901,537. Specification of Letters Patent. Patented Oct. 20, 1908.
Application filed March 28, 1908. Serial No. 423,854

To all whom it may concern:

Be it, known that I, Alfred Koscherak, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, county and State of New York, have invented new and useful Improvements in Razors, of which the following is a specification.

My invention relates particularly to safety razors, and comprises a holder for retaining the razor blade formed in two parts, secure together by a thumb-screw, the two parts being slidably mounted one upon the other to facilitate an easy securing of the razor blade within the holder, and at the same time to give the blade the desired angle with the handle to best adapt the razor for shaving.

My holder is preferably made of sheet metal properly stamped and formed, and is adapted for use with a uniformly thin flexible blade, although a rigid blade, or one having a back formed thereon may be used if desired. The holder is constructed to grip the blade at the front corners and along the back edge, with no other supports beneath the frame except along the sharpened edge which rests securely upon the bent-over ends of a row of teeth.

Referring to the drawings which form a part of this specification—Figure 1 is a perspective view of my safety razor, the blade being shown in broken outline. Fig. 2 is a front elevation of the razor. Fig. 3 is a side elevation of same. Fig. 4 is a sectional view taken through the plane x—x of Fig. 2, but showing the parts adjusted to give the blade a different angle than that shown in the other views.

The holder comprises what may be conveniently termed a slidable comb A and a handle B. The comb is slidably secured in inverted vertical position upon the handle and is substantially of the length of the blade C. It has formed upon its upper edge a row of teeth a which extend upward for a suitable distance and have their free ends bent over backwards providing a seat b upon which rests the edge c of the blade C. The teeth are preferably slightly curved outwards near the bends forming the bulged portions d. This brings the teeth sufficiently in advance of the edge of the blade to afford the necessary protection against accidental cutting of the face when the razor is used. The end teeth of the comb are bent over at the top forming lips e—e. These, lips are substantially the thickness of the blade higher than the seat b to permit the edge of a blade to be inserted between them and the seat.

The sides f—f of the comb may conveniently be bent over at substantially right angles forming with the end teeth and lips e receptacles g—g for receiving the front corners of the blade and secure it against forward and lateral displacement.

The base of the comb is reduced in width forming a slidable connection h, the sides of which are bent, over forming guides i—i. The handle B may be of any convenient shape to provide a good hold for the hand. It is tapped to receive the thumb-screw j and a slotted bore k is made in the comb positioned to register with the tapped hole so that the thumb-screw may be inserted through the bore and screwed into the tapped hole leaving the comb free to slide up or down when the screw is loose, and offering a ready means for securing the handle and comb together when adjusted to proper position by simply tightening the screw. The guides i—i prevent any turning of the comb about the thumb-screw and aid in securing an accurate adjustment of the parts.

The handle is bent over at a suitable angle near its top forming the support l which is again bent over at the extreme top edge forming a groove m for retaining the back edge of the blade.

To operate my razor, the thumb-screw is loosened, which permits the blade to be easily withdrawn. To insert a blade the sharpened edge is carefully laid upon the teeth a and brought forward to carry the corners beneath the corner lips e—e. "The back is then brought to rest within the groove m. The comb A can then be pushed up the handle until the desired angularity of the blade is reached and the thumb-screw tightened to secure the blade firmly in place. In moving the comb up, the back of the blade remains fixed and the sharpened edge rises, revolving about the back edge and continually changes its angularity relative to the comb and handle. Fig. 4 shows the comb in lowered position. The blade has here its greatest amount of angularity with the handle. Figs. 2 and 3 show the comb in raised position. Here the blade is more nearly perpendicular to the handle. It will be observed that in raising the comb from the position shown in Fig. 4 to that shown in Fig. 3 there is a slight spreading of the comb and handle apart. This spreading begins at the foot of the comb and by tightening the thumb-screw sufficiently there will be a tendency towards forcing the parts together and the blade will thereby be retained in spring pressed engagement between the front lips and back groove.

I have shown my razor as provided with comparatively large teeth and correspondingly large spaces. I have obtained satisfactory results from such a razor. The teeth afford ample protection against accidental cutting of the flesh. The spaces between the teeth are not only cut wide but are cut deep into the comb. This affords large openings for the soap to pass through. The razor is easily kept clean and sanitary. By removing the thumb-screw the handle and comb may be disconnected and are thus easily accessible for cleaning.

Having thus described my invention I claim—

1. In a safety razor a holder for the blade comprising a handle bent back near the top forming a support for the back of the blade, the said support having on its top edge a groove for retaining the back of the razor blade, and an inverted comb slidably mounted on the handle and having teeth extending upwards from the top edge, the ends being bent to afford supports for the edge of the blade, the corner teeth being bent over forming lips for retaining the front corners of the blade.

2. In a safety razor a holder for the blade comprising a handle bent back near the top forming a support for the back of the blade, the said support having a groove on its top edge for retaining the back of the razor blade, an inverted comb slidably mounted on the handle and having teeth extending upwards from the top edge, the ends being bent to afford supports for the edge of the blade, the corner teeth being bent over forming lips for retaining the front corners of the blade and a thumb-screw extending through an elongated bore in the comb and screwed through the handle, to secure said parts together when properly adjusted to effect a retaining of the blade within the holder in spring pressed engagement between the back groove and front lips.

Alfred Koscherak.

Witnesses:

James T. Taylor,

Mamie A. Murphy.