US1751215A

US1751215A - Guard for safety-razor blades

Info

Publication number: US1751215A
Application number: US332642A
Authority: US
Inventors: Muller Paul
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-10-04
Filing date: 1929-01-15
Publication date: 1930-03-18
Anticipated expiration: 1947-03-18

Description

March 18, 1930.

P. MULLER GUARD FOR SAFETY RAZOR BLADES Filed Jan. 15, 1929 INVENTOR Patented Mar. 18, 1930 UNITED STATES PAUL MfiLLER, or SOLINGEN, GERMANY GUARD FOR SAFETY-RAZOR BLADES Application filed January 15, 1929, Serial No. 332,642, and in Germany October 4, 1928.

My invention relates to improvements in safety razors with double-edged flexible blades and the invention consists of the novel construction of the blade supporting safety guard.

The bearing points for the cutting edges of flexible blades of the well known guards are not placed close to the cutting edge of the blade but a little further back. Consequent- 1 ly there remains a little space between guard and blade when screwed together ready for use, and there is the possibility that when shaving, particles of the skin are clamped in this space and are cut.

Further the extremely thin edge of this type of blades, not being properly supported at the extreme point of the cutting edge, is inclined to vibrate, especially with strong beards, it easily gives place to the reaction of the numerous hairs and does not shave clean.

The prime object of my invention is to avoid these disadvantages.

For this purpose the guard is shaped like a frame without teeth, having along the sides hollowed ledges, which are lower than the main top surface of the guard plate being provided with a novel safety device in form of a number of needle like bearing points which are so placed that they support the edge at the extreme point and divide the whole length of the edge into small framed sections.

This serves a triple purpose.

Firstly. It makes it impossible for particles of the skin to clampin the space between edge and guard and cause cutting of the skin when shaving.

Secondly. Any vibration of the edge giving place to the reaction of the hair is impossible.

Thirdly. The needle like bearing points are so small that practically the whole length of the edge is free for shaving contrary to the known guards with teeth which shave only between the latter. Further ample space is now provided between guard and cutting edge for the cut particles of the hair and the lather to escape backwards.

Figure 1 is a perspective view of the safety guard with handle and cap.

Figure 2 is a detailed perspective view of one of the ordinary blades, commonly employed with razors of this type.

Figure 3 is a view of the safety razor with the blade in position thereon.

Figure 4: is a front view of the safety razor.

a shows one of the needle like bearing points.

Z) shows the edge of the blade.

0 shows the guard.

d shows the raised the guard.

e and 7 show the 2 hollowed ledges.

g and h show the 2 apertures for the escape of the lather.

What I claim is:

In a safety razor for double edged flexible blades a frame like guard plate without teeth, said guard plate having along the sides hollowed ledges, said ledges being rounded OE and lower than the main top surface of the guard plate and being provided with a novel safety device in form of needle-like bearing points, said needle-like bearing main top surface of points being positioned 'to support a double edged flexible blade, although the edge is quite free across its whole breadth, quite immovably right up to the very cutting edges, dividing said cutting edges into small closed sections for the purpose set forth in the specification.

PAUL MI'JLLER.

- The diagram indicates the description of this invention.