Dual blade razor
Invention Safety Razor
Filed Thursday, 10th October 1968
Published Tuesday, 20th July 1971
Inventor Roger C. Edson
Language EnglishCPC Classification:
Safety razors with one or more blades arranged transversely to the handle
Performing Operations; Transporting
Hand Cutting Tools; Cutting; Severing
Hand-Held Cutting Tools Not Otherwise Provided For
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
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
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Parts not referenced in the text: None
Parts not referenced in the images: None
Old Saybrook, Conn, 06474
13 Claims, 7 Drawing Figs.
UNITED STATES PATENTS
939,93511/1909 Wilcox................................. 30/50 X
1,890,33412/1932 Muros.................................. 30/50
206,980 2/1908 Germany................................ 30/50
Primary Examiner—Othell M. Simpson
Attorney—Curtis, Morris & Safford.
ABSTRACT: Disclosure relates to a razor having a bifurcated yoke at one end of a handle and on which a blade carrier is pivotally mounted to rock. The blade carrier has surfaces for replaceably mounting a pair of blades in an opposed inclined relationship with a space between adjacent cutting edges. Each of the blades then acts as a guide for the opposite blade as they are moved in opposite directions and the carrier pivots to follow the contour of the surface being shaved.
The present invention relates to razors and more particularly to a safety razor having an improved construction and arrangement of elements.
Conventional safety razors usually comprise a handle having a head at one end on which replaceable blades are mounted and clamped in position thereon. The head has a guard adjacent to but spaced from the edge of the blade to provide a space therebetween for the hair to be shaved and discharged. Also the clamp for the blade together with the guard form guides which bear against the surface being shaved at the opposite sides of the blade edge to aid in positioning the edge of the blade at a proper shaving angle to cut the hair. Safety razors, in general, are so satisfactory in use that they have practically replaced the straight razors previously used. However, the head of a safety razor can be moved in only one direction to cut the beard and, like the straight razor, must be continually manipulated manually to follow the contour of the face or other part of the body being shaved.
One of the objects of the present invention is to provide an improved safety razor in which the blade pivots to follow the contour of the area being shaved and automatically adjusts the angle of the blade relative to the skin to produce optimum shaving results at all times.
Another object is to provide a razor of the type indicated having a blade arrangement which will shave hair from the skin by movement of the razor in apposite directions.
Still another object is to provide a safety razor of the type indicated having a simple and compact construction adapted for economical manufacture and one which shaves a beard efficiently and at a fast rate with a minimum of concentration, skill or dexterity.
These and other objects will become more apparent from the following description and drawings, in which like reference characters denote like parts throughout the several views. It is to be expressly understood, however, that the drawing is for the purpose of illustration only and is not a definition of the limits of the invention, reference being had for this purpose to the appended claims.
In the drawings:
Referring now to the drawings, a razor incorporating the novel features of the present invention is shown as comprising a handle
The blade carrier
Each of the blades
In addition, the pivot points for the blade carrier
With the face properly lathered, the razor is applied to the face in the manner illustrated in
After the blades have engaged the surface to be shaved the razor may be moved in either of two opposite directions to shave a beard or hair from other parts of the body. If the razor is moved downwardly from the position illustrated in
The proper angle of the blades
When it becomes necessary to change the blade, the bolts
In addition, the blade
With the clamping plates
It will now be observed that the present invention provides an improved safety razor which automatically adjusts itself to follow the contour of the face and maintain a proper shaving angle regardless of the position in which the razor is held. It will be further observed that the present invention provides a razor which will shave a beard when moved in each of two opposite directions. It will be further observed that the present invention provides an improved razor of simple and compact construction to adapt it for economical manufacture and one which will shave a beard at a fast rate with a minimum of skill, concentration or dexterity.
While two embodiments of the invention are herein illustrated and described, it will be understood that further modifications may be made in the construction and arrangement of elements without departure from the spirit or scope of the invention. For example, replaceable carriers may be detachably mounted on the handle, with said carriers each having cutting edges ground on the upper edge of its inclined, preferably, flat surfaces so that the cutting edges constitute an integral part of the carrier instead of on separate detachable blades mounted on the carrier. Therefore, without limitation in this respect, the invention is defined by the following claims.
1. A safety razor comprising a handle, a shaving head pivotally mounted on the handle freely rockable thereon and having spaced surfaces inclined at an angle to each other, each inclined surface having a cutting edge facing the cutting edge of the other surface in spaced relation thereto so that, when the razor is applied to the surface to be shaved and moved in either direction, one cutting edge acts as a guide to hold the other cutting edge at a proper cutting angle to shave hair from the skin in the space therebetween.
2. A safety razor in accordance with claim 1 wherein said cutting edges and at least a portion of said inclined surfaces are formed from replaceable razor blades.
3. A safety razor in accordance with claim 1 further comprising biasing means for positioning said head relative to said handle while yieldably permitting pivoting of said head when in use.
4. A safety razor in accordance with claim 3 wherein said biasing means is a loop strip of light spring metal mounted on said handle and pressing on the underside of said head.
5. A safety razor in accordance with claim 1 wherein the space between said cutting edges is unobstructed.
6. A safety razor in accordance with claim 2 further comprising means for adjustably setting the spacing between the cutting edges of said blades.
7. A safety razor comprising a handle having spaced arms at one end, a blade carrier having oppositely inclined surfaces with a space therebetween and pivot pins projecting from the ends of the blade carrier in a medial plane between the surfaces, said pivot pins projecting through holes in the spaced arms of the handle to mount the blade carrier for free rocking movement thereon, the pivot pins being located below the apex of the oppositely inclined surfaces of the blade carrier, a blade for each surface, and means for detachably mounting one blade on each surface with its cutting edge facing the cutting edge of the blade on the oppositely inclined surface, the edges of said blades being spaced from each other so that the edges of the blades contact the skin and tilt the blade carrier so as to position each blade at a proper cutting position, and each blade guiding the edge of the other blade when moved in either direction.
8. A safety razor in accordance with claim 2 in which the total included angle between the blades is greater than 90°.
9. A safety razor in accordance with claim 8 wherein the space between said cutting edges is about 0.03 inch and said blades are set at an angle of about 130° to each other.
10. A safety razor in accordance with claim 1 wherein said head is pivoted on said handle about an axis parallel to said cutting edges closely below the apex of the angle formed between said surfaces.
11. A safety razor comprising a handle, a shaving head pivotally mounted on the handle to rock freely thereon to follow the contour of the surface of the body to be shaved, and said head having at least one cutting edge and a guide cooperating with and so spaced from the cutting edge as to hold the latter at a proper cutting angle to the surface of the body to shave hair from the surface in the space between it and the guide without cutting into the surface.
12. A safety razor in accordance with claim 11 wherein said head is pivoted on said handle about an axis parallel to and within an area closely adjacent to said space between said cutting edge and said guide.
13. A safety razor comprising a handle, a blade carrier mounted to be freely rockable on the handle, means on said carrier to support and position a plurality of replaceable blades, said blade carrier constructed to mount said blades such that the shaving edges of a pair of said blades face one another and are spaced apart sufficiently for a ridge of skin to be pressed between the edges and further to mount said blades at an angle relative to each other such that when one blade is drawn flatly across the skin acting as a guard and guide for the cutting edge of the other facing blade the latter is positioned so as to produce the proper shaving angle therefor.