To all whom it may concern:

Be it known that I, David E. Goe, a citizen of the United States, residing at Madison, in the county of Dane and State of Wisconsin, have invented a certain new and useful Improvement in Safety-Razors, of which the following is a specification.

My invention relates to safety razor blades and mechanism for holding the blade while in use. Its object is to make such a razor and handle or holder which can be cheaply manufactured, which will be accurate and efficient in operation, not readily liable to get out of order, and which can be easily cleaned and repaired.

My invention consists in a novel form of blade, having a ridge or corrugation running lengthwise of it, adapted to engage a corresponding surface in the holder, whereby the blade itself is given greater rigidity and when once placed in position in the holder can always be re-inserted in substantially the same position; in a novel form of handle or holder adapted to have the blade mounted therein for the purpose of use and in a novel form of guard for the blade whereby the edges of the blade are supported without being in contact with the guard.

My invention also consists in many details of construction which will be hereafter more fully described and claimed.

Referring to the drawings; Figure 1 is a sectional side elevation on line 1 of Fig. 2, showing mechanism illustrating my invention in its preferred form. Fig. 2 is a sectional side detail view taken on line 2 of Fig. 1. Fig. 3 is a plan view of the blade table or head upon which the blade is adapted to rest, there being guard teeth along opposite sides thereof. Fig. 4 is a plan view of my improved safety razor blade. Fig. 5 is a perspective view of the handle and holding bar, the blade and head being removed.

Again referring to the drawings, I provide as the most valuable feature of my invention a safety razor blade 12, made in substantially the usual rectangular form, as shown in Fig. 3. The outer edges 13 and 14 are ground sharp for cutting purposes, while in the center is a depressed rib or corrugation 15, running lengthwise of the blade; in the particular instance here shown approximately parallel to the edges 13 and 14. It is not essential to my invention that this rib be in the center of the blade, or that it extend parallel to the edges. This rib or corrugation 15 should be of such thickness of metal and of such a size as to lend rigidity to the blade and of such strength that the holding bar 18 may lie in this depression or corrugation, as shown in Fig. 1, and hold the blade in position on the blade table or head 20, The blade 12, as here shown, is not thin enough to be flexible, but it may be made so when used with the proper holder without departing from my invention.

The blade 12 just described may be used in a variety of holding devices, one of which is illustrated in the drawing and consists in a blade table or head 20, having running longitudinally of it at approximately its center a depression 21, in which the ridge or corrugation 15 of the razor blade is adapted to rest. Along the edge of the holding device or head are guard teeth 21^a of such-sizes and length that, as shown in Fig. 1, they extend just beyond the edges 13 and 14 of the razor blade. In the upper surface of these teeth and directly under the edges 13 and 14 of the razor blade I cut notches 23 and 24 so that the edges 13 and 14 of the blade are not in contact with the guard teeth 21^a, when the blade is in position for use, as shown in Fig. 1 thereby preventing interference by the guard with any part of the cutting edge. Extending downward from the underside of the holding device or head 20 is a threaded shank 25, adapted, as shown in Figs. 1 and 2, to engage the upper portion 26 of a handle 27, which is adapted to be grasped by the hand of the operator. Rotating handle 27 upon the shank 25 will, because of the existence of the screw threads shown, move the blade table 20 from the position shown in the full lines to the position shown in dotted lines of Fig. 1, or vice versa, depending upon the direction of rotation of the handle 27.

Rotatably mounted upon the upper portion 26 of the handle 27 is a collar 30, having mounted upon it a rectangular wire 32 of which the holding bar 18, heretofore referred to, forms the upper side. The ends 33 of this rectangle are of such a height that, as shown in Figs. 1 and 2 the blade table 20 may be moved up and down as just described within this rectangle. These wires 32 may, if desired, be pivotally mounted at 35 in the collar 30, so that the holding bar 18 may be moved about said pivot as an axis, if so desired,

In the operation of the device, the user rotates the handle 27 upon the shank 25 of the head 20 and in the collar 30 until the head 20 is in the position shown in dotted lines of Fig. 1. He now takes the razor blade 12 and inserts it under the bar 18 and upon the head 20 with the corrugation 15 of the blade in the depression 21 of the head. He now rotates the handle 27 in the proper direction to move the head 20 from the dotted line position of Fig. 1 to the full line position, or until the blade engages the holding bar 18 and the blade is locked in position, as shown. The device is now ready for use in shaving; when that operation is completed, the operator merely reverses the direction of rotation of the handle 27 and moves the head 20 down to the dotted line position, Fig. 1, when the blade 12 may be easily slipped from under the holding bar 18 or from the head 20 and cleaned and put away.

I do not wish to be understood as limiting myself to exact details of construction, which may be varied within reasonable limits without departing from the broad principle of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is;

1. In a safety razor the combination of a thin blade formed with a longitudinal arch, groove, or corrugation, a guard plate or table constituting a part of the main frame upon which said blade rests provided with an arch, groove, projection or the like registering with the corresponding part upon the blade to position and hold it, and means to clamp the parts together.

2. In a safety razor the combination of a thin blade formed with a longitudinal arch projection groove or corrugation, a guard plate or table constituting a part of the main frame upon which said blade rests provided with an arch, projection, groove or corrugation, registering with a corresponding part upon the blade to position and hold it in place manually adjustable means to clamp and hold the blade and guard plate firmly together.

3. In a safety razor the combination of a thin blade formed with a longitudinal arch projection groove or corrugation, a guard late or table constituting a part of the main frame upon which said blade rests provided with an arch projection groove or corrugation registering with a corresponding part on the blade to position and hold it in place means for detachably holding said blade upon the guard plate or table, and means for adjustably controlling the blade holding means.

4. In mechanism of the class described, the combination of a handle, a blade table or head supporting a razor blade, a mechanism for moving said blade table to and from said handle, a rectangular member rotatably mounted upon said handle, having its upper bar fitting over said head and a blade mounted upon said holding device or head under the upper bar of said rectangular member, substantially as described.

5. In mechanism of the class described, the combination of a handle, a blade table mounted over said handle, a shank upon one of said members threaded into the other whereby rotating one with reference to the other will cause said blade table or head and handle to be moved toward or from each other, a rectangular member easily rotatably mounted upon said handle and fitting over said head, and a blade mounted upon said blade table under a portion of said rectangular member whereby moving the head and handle away from each other, clamps the blade upon the blade table under the upper bar of the rectangular member substantially as described.

In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

David E. Goe.

Witnesses:

Dwight B. Cheever,

Carolyn Raftery.