US2291605A

US2291605A - Safety razor construction

Info

Publication number: US2291605A
Application number: US307459A
Authority: US
Inventors: Henry D Bratter
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-12-04
Filing date: 1939-12-04
Publication date: 1942-08-04
Anticipated expiration: 1959-08-04

Description

Aug. 4, 1942.

H. D. BRATTER SAFETY RAZOR CONSTRUCTION l Filed Dec. '4, 1939 Patented Aug. 4, 1942 I U-:N-lT E D STAT E S PAT E NT OF FlC E SAFETY RAZOR.' CONSTRUCTION Henry D. Bratter, Minneapolis, Minn.

Application December 4, 1939,*Serial1No'. 307459 9 Claims.

This invention relatesto razor constructions and more particularly to what is commonly termed a safety razor construction.

One of the objects of the invention is to provide a razor construction wherein a liquid which is mobile andso confined that -it can move to some extent is utilized to improve the shaving stroke of a razor. The term mobile as used herein is intendedto designate a liquid ywhich flows easily in contrast to viscous or slowly flowing liquids.

Another object of the invention is to provide a razor construction wherein a chamber for liquid is provided and the liquid is placed in the chamber only partiallyY filling the same and wherein said chamber does not materially change the neat compact appearance of the ordinary safety razor.

A more specific object of the invention is to provide a razor construction of the safety type wherein the outer :cross head section has a chamber countersunk therein and wherein the cha-mber bottom has a sump formed therein, said sump extending into the space between the two cross head sections and providing means for pol in accordance with my invention;

Fig. 2 is an enlarged section taken on the line '3 2 of Fig. l;

Fig. 3 is a top plan of the lower or inner cross head section;

Fig. 4 is a bottom plan of the outer or upper cross head section; and

Fig. 5 is a plan view of a blade adaptable for use with my razor construction.

In the drawing and particularly in Figs. 1 and 2 there is shown much of a conventional safety razor construction. It includes an elongated handle 6 with an axial threaded bore 'I in its upper end which is adapted to threadedly receive a stud 8 which is generally and preferably integrally formed with the upper cutter head section. Interposed between the upper cutter head section and the upper end of the handle 6 is a lower cutter head section Iii. This latter section has a plurality of teeth or guards II as is common in the ordinary razor. The razor illustrated is adapted for use with a double edge blade such as the blade I2 whichis clamped betweenr the'cross headsections and held firmly therebetweenby'. tightening of the screw connection between the handle 5 and the stud 8.

In the upper cutter heador cross head section 9 is a countersunk chamber formedby a casing I3. The casing may or may not` extend above the'top of the head section 9 depending upon the thickness of the head itself. It will be noted'thatthe'bottom of the casing extends inwardly from the normal inner arc at the underside of the head section 9 to provide a sump" I4 andthe. casing itself is adaptedto receive a quantity.y of liquid I5'.v The liquid preferred; is mercury since'it is one whichis extremely mobile and heavy compared with other liquids. It will also be seen that a certain amount of space is left between the top of the body of liquid and the top of the casing I3. The provision of this space permits the liquid to move around in the `casing with considerable freedom.

The blade I2 is provided with cut-out corner notches I1 to fit around projections I3 at the under corners of the upper head section 9. The central portion of the blade is provided with a generally oval cut-out I9 with short end projections 20 to fit the .configuration of the underside of the outer head section 9. rI"his configuration is produced by the depression in the head `as a res-ult of the sump I4 in the chamber I3.

Experiments have been made with safety razors in which gold and other heavy metals have been secured to or countersunk in the outer cross head section, but it was not until mercury a heavy mobile liquid was used that the beneficial results of my improved razor were produced. After' mercury Was introduced in a chamber such as the chamber I3 and only partially filling the same it was found that upon stroking with the razor the liquid had a tendency to follow through and impel the shaving stroke and produce a gentle shaving urge. At the same time, the Vextremely mobile liquid, namely, mercury has a quivering action to produce what might be termed impulses in the direction of the stroke. It is certain that the continued inertia of the heavy liquid in the casing has a delayed or more prolonged action in the direction of the stroke which is evident after the inertia of the remain- .der of the razor has been overcome by friction against the face.

From the foregoing description it will be seen that I have provided a razor construction wherein the general outward appearance of the razor is little changed, but wherein means is provided for producing a smoother and better cutting shaving stroke. The use of mercury or other suitable substance at the head where its effect can be brought to bear against the cutting edge is the principal feature of my invention. It is the combination of an element of concentrated Weight and the liquid action thereof which supplants the hand pressure generally necessary for clean or close shaving.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts Without departing from the scope of my invention.

What is claimed is:

1. In a safety razor construction, an outer cutting head portion adapted to be connected Ywith a handle, a closed chamber mounted on said cutting head portion, and a liquid in said chamber.

2. In a safety razor construction, a cutting head portion adapted to be connected With a handle, a closed chamber mounted on said cutting head portion, and a heavy mobile liquid only partially lling said chamber.

3. The structure in claim 2 and said heavy mobile liquid comprising mercury.

4. In a razor construction, a cutting head portion adapted to be connected with a handle, a closed chamber countersunk in said cutting head, and a liquid in said chamber of materially greater weight than water.

5. In a razor construction, an inner cross head section and an outer cross head section adapted to be connected with a handle, said sections being separable and including means for holding an apertured razor blade, the outer cross head section having a chamber incorporated therewith, the bottom of said chamber constituting a sump adapted for extending into and anchoring said apertured razor blade, said inner cross head section having a depressed portion to receive said sump, and said chamber having a quantity of liquid therein only partially lling the chamber.

6. In a razor construction, an outer cutting head portion adapted to be connected with a handle, a closed chamber countersunk in said cutting head portion and lying generally within the confines of the head of the razor, and a quantity of mercury only partially filling said chamber.

7. In a razor construction, a cutting head assembly adapted to be connected with a handle and including means for holding a blade, a chamber supported by said razor adjacent said blade holding means, and a liquid partially lling said chamber and permanently sealed therein.

8. In a razor construction, a cutting head portion adapted to be connected with a handle, a chamber associated With said cutting head portion, and a highly mobile liquid partially filling said chamber and permanently sealed therein.

9. In a razor construction, a cutting head portion adapted to be operatively associated with a handle, a chamber supported by said cutting head, and a liquid of greater Weight than water only partially lling said chamber and substantially permanently sealed therein.

HENRY D. BRATTER.