US2241986A

US2241986A - Safety razor

Info

Publication number: US2241986A
Application number: US336868A
Authority: US
Inventors: Oscar M Driess; Horace H Seay; Elmore J Eckerle
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-05-23
Filing date: 1940-05-23
Publication date: 1941-05-13
Anticipated expiration: 1958-05-13

Description

May 13, 1941- o. M. DRlEss ETAL 2,241,986

SAFETY RAZOR Filed May 23, 1940 Patented May 13, 1941 ics.

SAFETY RAZOR Oscar M. Driess, Horace H. Seay, and Elmore J. Eckerle, Louisville, Ky.

Application May 23, 1940, Serial No. 336,868

8 Claims.

This invention relates to safety razors of the single piece frame type, having an expansible resilient head, the opposite sides of which have parts which when said sides are pressed together, Vare adapted to pass through a slot in a wafer blade for mounting the blade with respect to the head, yand which parts when the pressure is relaxed, expand against the opposite sides of the slot in the blade, retaining the blade in shaving position in the razor.

One of the objects of the invention is to provide the opposite sides of the frame with outwardly opening narrow blade seating channels relatively angularly disposed when in blade retaining position, for the purpose of giving the proper transverse camber to the blade.

Another object of the invention is the provision of `a razor frame head of the type described, having a longitudinal outward-ly convexed corrugation cooperating with the edge of a blade 1 Still another object of the invention is the pro- Vision in a razor frame of the type described, of an integral filler portion which automatically enters .the space between the sides of the frame substantially in the plane of the blade, when the head is in blade retaining position, preventing yielding of the blade when shaving, and over which ller portions the terminal portions of the free sides of the frame head ride when pressed together, permitting blade releasing contraction of the frame.

Other objects of the invention will appear as the following description of a preferred and practical embodiment thereof proceeds.

Referring to the accompanying drawing which forms a part of .the following speciiication, and throughout the several figures of which the same reference characters have been employed to designate identical parts:

Figure 1 is a perspective view .of a razor vembodying the features of the invention;

Figure 2 is an axial section through the frame head showing it in full lines in expanded position, and in broken Ilines in contracted position and'in relation to a razor blade;

Figure 3 is a perspective view of a modified form of the invention;

Figure 4 is an axial section through the head of that form of razor shown in Figure 3;

Figure 5is a `plan view showing a blade with a single longitudinal slot; and

fil

Figure 6 is a similar View showing a blade having two slots separated by an intermediate web.

Referring now in detail to the sever-al iigures, and first adverting to that form of the invention shown in Figures 1, 2 and 5, the numeral I represents the frame as a whole, which comprises the handle 2 and the head 3. In the illustrated embodiment of the invention the head is composed ofa single piece of sheet metal bent to form a bridge piece 4, the central part of which has the form of a longitudinal ridge 5 to the central part .of which the handle 2 is riveted or otherwise preferably permanently affixed.

At each longitudinal edge of the bridge piece 4 the sheet metal forming the head is bentY handlewards to form two trough-shaped members 6 and l. The sheet metal of which the head is formed is inherently resilient, at least to some extent, and the resiliency of the rtrough-shaped members 6 and 'I is augmented by the bights or rotund portions 8 and 9 of said members, being of substantially U-shaped cross-section. The free sides of the trough-shaped members are deflected inwardly toward the bridge piece, and then folded outwardly to form the narrow blade seating channels Ill and Il. These channels open outwardly in opposite directions, and when in blade retaining position they make an obtuse angle with one another, so as to give the retained blade I2 the proper transverse camber.

It will be observed in Figure 2 that when the trough-shaped members are in their relaX-ed position, that is to say, their position of repose, they carry the blade substantially in the plane of the bridge piece so that the bridge piece projects between the blade seating channels and into the slot of the blade. The broken line showing of the frame head in Figure 2 indicates that when the resilient trough-shaped members are pressed inwardly `they Iare distorted upwardly so that the blade seating channels ride over the bridge piece and can be brought together. The sum of the Width of the outside flanges I3 and I4 of the blade seating channels is slightly less than the width of the slot I5 in the blade, so that when the blade seating channels are brought together, the blade is released and can be removed. When the parts are in the full line position shown in Figure 2, with the pressure upon the resilient troughshaped members released, the normal resilient bias of the trough-shaped members causes the lade seating channels to react outwardly against the opposite sides of the slot in the blade, retaining the blade in shaving position. The protrusion of the bridge piece 4 through the slot in the blade and between the blade seating channels prevents the blade from yielding to shaving pressure.

'It will be observed from Figures 1 :and 2 that the outer sides of the trough-shaped members are each provided Vwith an outwardly convexed longitudinal corrugation I6 which serves not only as a guard with respect to the 'adjacent edge of the blade, but by virtue of its smooth imperforate surface, it smooths and tautens the skin in advance of the approaching blade edg increasing the safety feature of the razor, and improving the shaving action of the blade. l

It will be observed also from Figures 1 and 2 that between the blade and Ithe guard corrugafA tions I6, the trough-shaped members are proing the scope of the invention which is defined in the appended claims.- Y A What we claim as our invention is:

1. In a razor, a frame comprising a handle and a resilient trough-shaped head to which said handle is secured, the opposite sides of said head having substantial portions adjacent their free ends deflected inwardly, and having the marginal vided with the outwardly concave -corrugations II and I8, each of which is formed with perforations I9 opening to the interior of the head, and affording drainage passage for the lather and hair debris which would otherwise accumulate behind the blade edge land clog the razor.

In Figures 3, 4 and 6,'a modied form of the invention is shown, in which the bridge piece does not come up to the plane of the blade seating channels, and therefore, lacks the ller Vfunction which is present in that form of the inven-v tion disclosed in Figures 1 and 2. The razor shown in Figures?, and 4 comprises a relatively narrow bridge piece 20, to which the handle 2 is xed. The trough-shaped members 2| and 22 and the

bights

23 and 24 extending only a slight distance handlewards with respect to the bridge piece 20. Said trough-shaped members are substantially similar in their shape-features to the trough-shaped members shown in the form` of razor first described, in'that they are provided with the narrow blade seating channels IU and I I, the imperforate longitudinal outwardly convexed guard oorrugations I6 and the outwardly concave longitudinal perforate drainage corrugations I'I and I8. Due to the fact that the bridge piece does not extend up to the plane of Vthe blade seating channels, the trough-shaped Vmembers in the form of the invention of Figures 3 and 4 define a single head chamber instead of two head chambers, as in Figures 1 and 2, but this is a relative immaterial feature of the inf vention. The head in Figures 3 and 4 is norso that a razor blade seated in the channels I Il and II is firmly retained in shaving position in the head. The width of the outside anges I3 and I of the blade seating channels is such that when the outer sidesY of the trough-shaped members are pressed together, the slotted blade is released from the blade seating flanges and can be removed. Figure 3 specically shows a razor which can be employed with a blade such as that shown in Figure 6, in which two slots are dened by an intermediate web 25. The outside flanges I3 and I4 of the blade seating channels are discontinuous to form spaces 26 and Z'I for the purpose of accommodating the web 25 of theblade.

runderstood to those skilled in the art that the details of construction and the arrangement ,of parts as herein described and illustrated are by way of example, and not to be construed as limitportions adjacent their free ends deected outwardly to form narrow blade seating channels, normally biased outwardly relative to one another lfor coacting with the opposite slot sides of a slotted'blade seated in sai-d channels.

2. In a razor, as claimed in claim 1, said channels being relatively disposed at a 'proper obtuse angle to give transverse camber to the blade.

3. In a razor, as claimed in claim'l, the sides of said frame being formed with longitudinal outwardly convexed skin smoothing corrugations positioned to be adjacent the edges of the blade mounted in said seating channels, and to serve as guards for the edges of said blade. y

4.. In a razor, as claimed in claim 1, the sides of said frame being formed with longitudinal outwardly convexed skin smoothing corrugations positioned to be adjacent the edges of a `blade mounted in said seating channels to serve as guards for the edges of said blade, and having longitudinal outwardly concave perforated corrugations between said convex corrugations and said blade seating channels, for draining lather and debris to the inside of said head.

5. In a razor, a frame comprising a handle and a head, the latter including a bridge piece with resilient trough-shaped members depending from its opposite longitudinal sides, each troughshaped member having a substantial portionadjacent its free end deflected inwardly toward said bridge piece, and having marginal portions adjacent their free ends displaced outwardly to form narrow blade seating channels normally biased outwardly relative to said bridge piece for coacting with the opposite slot sides of a slotted blade seated in said channels, said bridge piece extending through the slot in the seated blade and between said blade seating channels, the terminal portions of said trough-shaped members being constructed to ride over said bridge piece under constrictive pressure applied against the free sides of said trough members, whereby said seating channels may be brought together above said bridge piece for releasing said blade.

6. In a razor, as claimed in claim 5, said blade seating channels being disposed at a proper obtuse angle to give transverse camber to the blade.

7. In a razor, as claimed in claim 5, the outer sides of said frame being formed with longitudinal outwardly convexed Vskin smoothing corrugationspositioned to be adjacent the edges of a blade mounted in Said seating channels, to serve as guards for the edges of said blade.

8. In a razor, asy claimed in claim 5, the sides of said frame being formed with longitudinal outwardly convexed skin smoothing corrugations positioned to be adjacent'.V the edges of a blade mounted in said seating channels, to serve as guards for the edges of said blade, and having longitudinal outwardly concave perforated corrugations between said convex corrugations and said blade seating channels, for draining lather and debris to the inside of vsaid head.

' OSCAR M. DRIESS.

, HORACE- H. SEAY. ELMORE J ECKERLE.