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Safety Razor with Curved Blade

PatentUS842000

InventionSafety-Razor

FiledSaturday, 5th May 1906

PublishedTuesday, 22nd January 1907

InventorJames T. McCann

LanguageEnglish

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United States Patent Office.

James T. McCann, of Greensburg, Pennsylvania. Safety-Razor.
No. 842,000. Specification of Letters Patent. Patented Jan. 22, 1907.
Application filed May 5, 1906. Serial No. 315,314

To all whom it may concern:

Be it known that I, James T. McCann, a citizen of the United States of America, residing at Greensburg, in the county of Westmoreland and State of Pennsylvania, have invented certain new and useful Improvements in Safety-Razors, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to safety-razors; and its primary object is to provide a device of this character of simple and inexpensive construction in which the corners of the razor-blade as well as the cutting edges thereof are protected to prevent injury to the user.

A further object of the invention is to provide a safety-razor the parts of which may be readily assembled or taken apart.

The construction of the improvement will be fully described hereinafter in connection with the accompanying drawings, which form part of this specification, and its novel features will be set forth in the appended claims.

In the drawings, Figure 1 is a view in perspective of a safety-razor embodying the invention. Fig. 2 is a perspective view of the razor-shield detached. Fig. 3 is a similar view of the blade. Fig. 4 is an elevation of the handle detached. Fig. 5 is a longitudinal section of the handle. Fig. 6 is a section on the line 6 6 of Fig. 1. Fig. 7 is a transverse section on the line 7 7 of Fig. 1; and Fig. 8 is a detail, on an enlarged scale, of one corner of the shield.

The reference-numeral 1 designates the shield portion of the device, formed at each of its opposite longitudinal edges with a row of teeth 2, the central tooth 3 of each row being formed with a threaded opening 4 for a purpose hereinafter described.

The central portion 5 of the shield is depressed, and its side portions 6 are oppositely curved, as best shown in Fig. 7. The shield is formed with a central perforation 7 for the passage of the end of the securing-rod 8 of the handle. The upper surface of the shield 1 is provided at each end, centrally of its width, with a triangular lug 9 and at each of its corners with a guard-flange 10, said flanges extending along both the end and side edges of the shield for a short distance and forming guards within which the corners of the blade fit.

The end teeth 11 at one edge of the shield project beyond the adjacent teeth and are perforated to form bearings for a pintle 12, upon which is supported a tubular roller 13.

14 designates the razor-blade, curved in cross-section to conform to the shape of the shield and formed with central triangular end notches 15 to receive the lugs 9 of the shield. The corners of the blade fit within the corner guard-flanges of the shield, and the connecting-rod 8 of the handle extends through a threaded central opening 16 in the blade.

The handle 17 is hollow, as shown in Fig. 5, and is closed at its outer end by a knob 18, from which the connecting-rod 8 projects. The knob 18 is secured to the handle by a ferrule 19, and the upper end of the rod 8 is screw-threaded, as shown, for attachment to the blade.

For the purpose of adjusting the edges of the blade with relation to the teeth of the shield I provide at either side of the shield an adjusting-screw 20, said screws extending through the threaded openings 4 of the central teeth 3 of the shield.

It will be apparent that the blade 14 is firmly held against horizontal or transverse play by the corner-flanges and the triangular lugs and notches and also that the roller, which revolves freely upon its support, will facilitate the operation and manipulation of the razor.

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

1. In safety-razors, a shield and a blade having the same transverse curvature to conform to each other, teeth formed on the longitudinal edges of said shield, a guard formed on each corner-tooth to receive the corners of said blade, the two corner-teeth of one longitudinal edge being extended beyond the remainder of the teeth of said edge, a roller journaled in said two projecting teeth, and end lugs carried by the shield to engage in notches provided therefor in the ends of the blade.

2. In safety-razors, a shield member and a blade member having the same transverse curvature to conform to each other, end lugs formed on one of said members to engage in notches provided therefor in the other of said members, teeth carried by the longitudinal edges of the shield member and having the two corner or end teeth of one edge projecting beyond the remainder of the teeth of said edge, and a roller journaled in said two projecting teeth.

3. In safety-razors, a shield member and a blade member transversely curved in the same manner to conform to each other, centrally-disposed end lugs carried by one member to engage in notches formed in the other member, teeth formed on the longitudinal edges of said shield member, the end teeth of one longitudinal edge being extended beyond the remainder of the teeth on the same edge, a roller journaled in said extended teeth, and guard-flanges carried by the end teeth of each edge to receive the corners of said blade member.

4. In safety-razors, a transversely-curved shield having teeth on both longitudinal side edges and having the end teeth on one longitudinal side edge projecting beyond the remainder of the teeth on the same edge, a roller journaled in said two projecting teeth, and a transversely-curved blade fitting on the shield the blade and shield having the same transverse curve, whereby the inner face of the blade contacts throughout its surface with the shield.

5. In safety-razors, a toothed shield longitudinally concaved centrally of its upper face and reversely curved at each side of the concave portion, a blade conforming in curvature to the shield and closely fitting on the upper face thereof, and means for securing the blade and shield together.

In testimony whereof I affix my signature in the presence of two witnesses.

James T. McCann.

Witnesses:

W. D. Morris,

Chas. A. McAndrews.