US2151265A

US2151265A - Safety razor

Info

Publication number: US2151265A
Application number: US151899A
Authority: US
Inventors: Holger V Clausen
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-07-03
Filing date: 1937-07-03
Publication date: 1939-03-21
Anticipated expiration: 1956-03-21

Description

March 21, 1939. H. v. CLAUSEN SAFETY RAZOR Filed July 5, 1937 IN V EN TOR.

ATTORNEYS.

Patented Mar. 21, 1939 v UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to safety razors, one of its objects being to provide a holder for doubleedged blades the parts of which are all joined so that they will not become misplaced relative to each other, the construction being such as to enable the razor to be readily cleaned by the flow of water therethrough and easily dried by shaking.

Another object is to so join the handle to the blade holder as to permit the blade to be supported in an oblique position relative to the handle, means being employed for preventing the blade from cutting the skin while being drawn thereover at said angle to obtain a shearing cut through the hairs.

A still further object is to provide a razor of the safety type which employs the usual flexible blade, it being preferred, however, to so proportion these blades that they are less exposed along their cutting portions than ordinarily but to a sufficient degree to produce a close shave, it being understood however that the blades of standard width rather than blades of reduced width can be used in the razor.

A further object is to so construct the guards of the safety razor that they will not tend to stretch the skin close to the cutting edge but, on the contrary, will permit the skin to bulge slightly toward the edge so that a very slight exposure of the edge portion of the blade will be sufiicient to produce the desired close shave without injury to the skin.

A further object is to arrange the handle obliquely to the cutting edge, as before explained so that there is no tendency on the part of the user to draw the edge into a line at right angles to the direction of pull.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

In the accompanying drawing the preferred form of the invention has been shown- In said drawing:

Figure 1 is a side elevation of a portion of a razor constructed in accordance with the present invention.

Figure 2 is a view partly in transverse section shown in Figure 1.

" Figure 3 is a plan view of a portion of a slightly modified form of razor. I

Figure 4 is a view showing another form in transverse section.

Figure 5 is a view similar to Figure 4 showing another modification.

Figure 6 is a section more or less in diagram showing the razor pressed against a surface being shaved and showing how the parts cooperate to permit the skin to slightly bulge where it can be properly shaved by the slightly exposed edge of the razor without danger of being cut.

Figure 7 is a section showing how two blades can be assembled in overlying position for the purpose of obtaining a double shave simultaneously.

Figure 8 is a plan view of a blade which can be used with the razor.

Figure 9 is a section through a portion of another modified form of razor.

Referring to the figures by characters of reference I designates a blade supporting member adapted to extend longitudinally of the blade and provided on the upper surface thereof with any suitable means for entering a slot S or holes H in a blade B. This member I has a central recess or cavity 2 and is provided at its ends with pairs of oppositely disposed arms 3. The arms of the two pairs can support roller guards 4 or, instead of rollers, bars containing guard teeth 5, as shown in Figure 3, can be used. The bottom of the recess or cavity 2 has a slot 6 for the purpose hereinafter explained.

A blade clamping plate or holder 1, the inner or lower face of which is preferably concave as shown in Figure 1, is adapted tobear upon the blade B and hold it in proper position to maintain its cutting edges 1) only slightly exposed and in such relationship to the guards as to allow the skin of the surface being shaved to bulge slightly into the path of the cutting edge. As this cutting edge projects only minutely beyond the holder, the skin will not be cut but the bases of the exposed portions of the hairs will be brought into position where they will be sheared off close to the skin and produce a smooth shave.

A contact roller 8 can be integral with the middle portion of the holder 1 and this holder is held assembled with the support I by a side frame 9 having an arm I0 extending inwardly therefrom and adapted to be seated in a recess II where it is joined to the support I by a pivot device I2.

Formed on the lower or inner surface of the holder 1 adjacent to the center thereof, is an ear l3 or the like having a threaded stud l4 pivotally connected thereto and engaged detachably by a socket member l5 which projects from. one end of a handle IS. The shank ll of this socket member is adapted to work within slot 6. When the socket member is in proper engagement with the threaded stud ll, one end of the handle l6 will bear against the arcuate surface ll! of that portion of the holder in which the recess or socket 2 is located so as thus to hold the handle steadily and to allow it to be clamped frictionally against the arcuate surface to maintain the handle at a predetermined angle relative to the support I and holder 1.

With the parts thus assembled it will be seen that the holder 1 will be held tightly clamped upon the blade by the handle pressing against the arcuate surface l8. By unscrewing the socket member l5 and the stud I, said stud will be released and the plate 1 can be swung laterally away from the blade and around the pivot l2, thus permitting the blade to be readily removed and allowing the parts to be easily cleaned and dried.

Obviously, instead of depending upon the handle l6 bearing against the arcuate surface l8 4 for fastening the holder 1 in gripping position, a

latch l9 can be mounted in support 20 as shown in Figure 5, this latch being adapted to engage a projection 2| extending from the holder 22 and through the blade B. Where such a latching means is employed the handle 24 can be pivotally connected directly to the support 20.

A further modification of the structure shown in Figure 2 has been illustrated in Figure 4 wherein the threaded stud 25 carried by the clamping member or holder 26 is extended through the slot 21 in the arcuate portion 218 of the support 29 and this stud is engaged by the end portion of handle 30 so that when said handle is screwed onto the stud, its recessed end 3| will bear tightly upon the arcuate portion 28 to fasten the handle at a desired angle to the holder and also to fasten the holder in gripping position.

Another modification of the structure shown in Figures 2 and 4 has been shown in Figure 9 wherein instead of arranging the handle so that it will bind upon the arcuate portion of the blade support, a recessed nut 32 can be screwed onto the threaded stud, the handle 33 being pivotally attached to this nut so as to be moved to any angle desired. By turning the handle, however, the nut will be tightened against the arcuate por tion to fasten the holder in position. Notwithstanding this it is evident that if such a handle is used, it is not indispensable to use a pivotally connected stud 25, as a rigid one would serve, and that slot 21 and arcuate portion 28 could also be dispensed with.

It is a well known fact that a better cutting action is obtained by holding the cutting edge obliquely to the direction of travel over the surface being shaved and for that reason the handles have been so mounted as to be adjustable angularly relative to the support and holder and to the gripped blade. Thus the cutting edge can be held obliquely to the longitudinal axis of the handle so that when the handle is drawn, the cutting edge will be maintained in its oblique or shearing position.

It is also a well known fact that it is dangerous to use a safety razor for oblique shaving due to the fact that an oblique holder has a tendency which way said roller guard will counterbalance the above indicated tendency to move sidewise.

A proper arrangement of a roller guard 4 and a suitable blade clamping plate I will permit the construction of a safety razor which does not need to have the blade exposure whichis indispensable in other safety razors of this type for obtaining a close shave. Considering, however, that many people are likely to insist on the customary edge exposure, it would doubtless be advantageous to make the width of the razors of the type described herein so that the customary edge exposure is obtained when using a flexible blade of standard width, the smaller exposure being obtained by the use of a narrower blade around 21 millimeter wide.

The standard width of flexible blades is always 22 millimeters and considering that ordinary safety razors of this type usually have an exaggerated edge exposure which needlessly increases the danger of cutting and skin irritation,

the above described blades of reduced width could to advantage be'uscd in nearly all double-edged safety razors manufactured at present, thereby making them softer in their action without affecting closeness of shave.

If it is desired to make the blade holder in such a way that it can only be used in combination with blades manufactured especially for same, the inside or lower face of blade clamping plate I, 22 or 26 can be provided with any suitable means 36 of Figure 6 for entering holes H in blade B.

When a blade of reduced width is used in combination with holes H and projections 36 are made of a suitable length an additional blade of standard width can be put in afterwards. In this way the edges-of the wider blade can be held at a convenient distance from those of the narrower blade if it should be desirable to shave with two blades.

This arrangement can also be adapted for single-edged safety razors'as shown in Figure 7, the cutting edge of one blade being disposed in advance of the other so that two shaving actions can be obtained simultaneously. It is evident that the upper blade holder 34 and the lower 35 can be supported by the same axis parallel to the cutting edges and held in place between suitable arms attached to a handle. The corners of the cutting edges of blades B can be held adjacent to a suitable guard by any conventional means, said guard being attached to a handle.

With special reference to clamping plate 1, same should preferably be made as thin as possible, raised portion 31 being sufficient for keeping the skin at a safe distance from the .edge, contact roller 8 serving to decrease friction if the razor is pressed against a surface being shaved as shown in Figure 6. In the position shown in said Figure 6 the flat surface of the blade is practically parallel to the skin, which increases thecutting efliciency of the edge, such favorable working position hardly being possible with ordinary safety razors.

While the improvements have been described mostly with respect to razors using flexible blades it will be understood by those skilled in the art that most of these improvements might easily be adapted to single-edged razors and also that various other changes can be made in the construction and arrangement of the parts in the scope of the present invention and it is intended therefore in the appended claims to cover all such modifications.

What is claimed is:

1. In a razor, the combination of a guard having oppositely disposed arcuate arms, rollers mounted one at the end of each of said arms, upstanding arms formed integrally with said first mentioned arms and extending above the same, a blade supported on said last mentioned arms, a clamping plate pivotally mounted on said guard overlying said blade and provided with a roller to engage the face of the user, and projections on the upper surface of said clamping plate on the opposite sides of the roller also adapted to engage the face of the user.

2. In a razor, the combination of a guard having oppositely disposed arcuate arms, rollers mounted one at the end of each of said arms, upstanding arms formed integrally with said first mentioned arms and extending above the same, a blade supported on said last mentioned arms, a clamping plate pivotally mounted on said guard overlying said blade and provided with a roller to engage the face of the user, projections on the upper surface of said clamping plate on the opposite sides of the roller also adapted to engage the face of the user, a handle, a member mounted upon said handle formed with a threaded recess, and a threaded stud pivotally mounted upon the clamping plate adapted to engage said threaded recess.

3. In a razor, the combination of a guard having oppositely disposed arcuate arms and a recess formed longitudinally thereof, rollers mounted at the end of each of said arms, upstanding arms formed integrally with said first mentioned arms and extending above the same, a blade supported upon said last mentioned arms, a clamping plate pivotally mounted on said guard overlying said blade and provided with a roller to engage the face of the user, projections on the upper surface of said clamping plate on the opposite sides of the roller also adapted to engage the face of the user, a handle, and a member mounted upon said handle adapted to frictionally engage within the recess in said guard.

HOLGER V. CLAUSEN.