InventionGuard for Razor-Blades
FiledMonday, 10th March 1884
PublishedTuesday, 28th April 1885
Parts not referenced in the text: None
Parts not referenced in the images: None
To all whom it may concern:
Be it known that we, James Brady, of Brooklyn, Kings county, New York, and Alfred V. Brokhahne, of New York city, New York, have invented a novel Stropping and Honing Attachment for Razors, Knives, &c., of which the following is a specification.
The object of our invention is to provide a simple attachment for knife or razor blades whereby a sharp-backed hollow-ground razor may be stropped without scraping or injuring the surface of the strop, and whereby a knife-blade may be easily held or presented at such an angle to the surface of the hone as will grind a regular and true cutting-edge thereon, and obviate the necessity of skillful manipulation in this operation, which is generally necessary to properly sharpen a knife.
To these ends our invention may be briefly stated to consist in a clasp, preferably of semi-tubular form, adapted to slide or fit over the back edge of the blade, and thus form a rest to contact with the hone, by which the back edge of the blade will be raised above the surface of the hone at such an inclination as to present the cutting-edge to the hone at the proper angle for grinding a true cutting-edge thereon. We also make the bearing-faces of the clasp or slide smooth or rounding, so that it will slide or move smoothly over the surface of the hone or strop, and in the case of stropping a razor will roll down the greased surface of the strop, keeping it smooth and compact, and thereby covering and neutralizing the sharp back of hollow-ground razors, which tend to scrape and injure the strop. Our invention therefore consists, mainly, in the features here outlined, and also in some details, as hereinafter fully set forth.
In the annexed drawings,
Referring first to
The attachment thus applied to the razor may be left permanently thereon during the action of shaving as well as of stropping, or it may be applied thereto only when the razor is stropped, and removed at other times. The attachment, however, will in no way interfere with the action in shaving, and hence may be left constantly attached to the razor-back. In fact, the attachment may be made a positive assistant in shaving, particularly in the hands of novices in self-shaving, in which ease the tube or attachment may be rested against and slid over the skin in moving the cutting-edge of the razor against the beard, and this will present the cutting-edge at a safe angle for shaving and reduce the danger of cutting. To serve this purpose, the tube db should preferably be a little thicker or wider diametrically than shown, so that when the razor-blade is placed upon a surface, as in
The special form of the tube in cross-section is not of course essential, except that it should be of such a form as will fit snugly on the back of the blade and have rounded corners or bearing-faces, as described, and hence the tube may be more or less round or flat, as may be desired, as shown in
This attachment may be, of course, used for any other blades for which it may be suited, besides for razors and knife-blades, and may be used either for honing or stropping, as described.
It is not, of course, necessary that the attachment be made in semi-tubular form at all, although we prefer this, as it may be made of wire, as shown in
We are aware that the back and shank of razor-blades have been made of sheet metal, into which the blade proper slides. We are also aware that a cleft back has been pivoted to the shank end of a thin blade and arranged to swing off the blade when the blade is honed or stropped. We are also further aware that a thin clasp of sheet metal has been slipped over the blade, so as to cover both sides of the blade, leaving only the mere cutting-edge exposed between the lips of the clasp. We are also aware that a handle has been provided with a clasp adapted to receive a loose blade to be honed; but in this case the clasp does not extend but about one-half the length of the blade, and hence it would neither present all parts of the edge of the blade uniformly at the proper angle to the hone, nor would it prevent the strop being scratched by the sharp corners of the back of the razor. All the devices obviously differ from our device both in construction and purpose, and we therefore disclaim them, as our device consists, essentially, of a removable clasp adapted to firmly fit upon the back of the blade of an ordinary razor when the same is to be honed or stropped, leaving the edge part exposed, and having a lateral projection from the back of the plate extending along the whole length of the blade to such an extent as will keep the blade tilted on the strop or hone to the correct angle for its entire length, which is a feature not shown in either of the devices mentioned, and a purpose not accomplished or sought for by the former devices.
What we claim as our invention is—
1. A removable attachment adapted to be secured to the back of an ordinary razor or knife blade, and embrace the same longitudinally, with rounded bearing sides or corners projecting laterally from the back of the blade for the whole length thereof, and adapted to roll or slide smoothly over the surface of a strop or hone, substantially as and for the purpose set forth.
2. A removable clasp adapted to be fitted to the back of an ordinary-handled knife or razor blade, and to project laterally therefrom to form a gage or rest for the blade along its whole length when placed on the hone or strop, and made of such thickness or projection as will present the edge of the blade at the correct sharpening angle to the surface of the hone or strop, substantially as herein set forth.
Alfred V. Brokhahne.
Jno. E. Gavin,
Chas. M. Higgins.