Improved method of making flexible safety-razor blades with bright letters or signs

A long title for a shortish post. Sometimes when I am digging trough patents online, I find one that is only tangentially related to shaving, but still interesting enough to post about. This, from a fellow Scandinavian, is one of those. Touted as an improved way to adorn a razor blade with bright letters or signs, the described method should work just as well on any steel item.

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Buddy Kit – a patented toilet kit

A few days ago a fellow shaver posted a thread on my favourite shaving forum, asking for information on something called the Buddy Kit. And since Bax included a photo with a patent number… well, you know what I had to do. So to the Internet I went, and started digging.

The patent application for the Buddy Kit was filed in mid 1941. It was almost two years before it was granted though, possible due to things getting a little hectic at the end of ’41. There was a war on, after all – which may explain an oddity I’ll get back to.

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Körzinger & Nettlich’s soap brush for shaving

Yes, it is another disposable lather device,1 and like Dr Samuel Schereschewskij’s invention this one also comes courtesy of the Kaiserlich und Königlich Patentamt2 in Austria. Patented in 1901, Herr Eugen Körzinger and Herr Otto Nettlich came up with a single use, hygienic, and cheap way to lather the beard.

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Kickstarter – or “Adding shit to razors”

A while ago I learned that yet another safety razor is heading towards crowdfunding. Kickstarter is full of the things. Most are never fully funded, quite a few is existing manufacturers raising cash and awareness on new razors, some are outright scams, and some are… well, like this one. Let us rip it apart, shall we? See what bits makes sense in the context of shaving, and what bits that don’t.

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Samuel Schereschewskij’s device for lathering the beard

Not all interesting shaving related patents are written in English – the razor on a spring comes to mind – but I can still enjoy them thanks to a rudimentary grasp of other languages and automatic translation. Today I stumbled over a fun one written in German. It is Õsterreichische Patentschrift Nr 40136 by Dr Samuel Schereschewskij describing an “Vorrichtung zur Erzeugung von Seifenschaum und zum Einseifen des Bartes.”. Or, in English, a device for producing lather and for lathering the beard. You know; what most of us uses a shaving brush for today.

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Paul Zammet and the Improved Razor Guard

King Gillette didn’t invent the modern double edge safety razor in a vacuum. The idea of placing a guard near the razor sharp edge goes back to Perret’s 1762 razor guard. And even if Frederick and Otto F. Kampfe patented the first recognisable modern razor in 1880, people did not stop inventing improvements to the straight razor. Enter left; Paul Zammet and his 1881 patent!

Paul Zammet’s improved razor guard isn’t conceptually different from Perret’s idea. A guard is mounted on the blade, in such a way that it will be less likelihood of ending up with a cut throat. Perret likely used wood, Zammet envisioned a stamped metal1 device. As far as can be made out from the patent and drawing, it simply clipped over the back of the blade, and protruded out slightly in front of it. The edge of the guard formed a safety bar, and a cut out let lather and cut whiskers pass through.

Patent drawing from US patent 250412 showing the razor guard and the razor guard mounted on a straight.
Drawing from US patent #250,412

Like many such guards, the device would limit the shaver to use only one side of the blade. Paul Zammet recognises this in the patent text, and points out the guard could “easily” be slid of the blade and reversed. How easily this could be done with a wet and lathery blade is left as an exercise to the reader.

The full patent can be read at Google Patents. If you enjoy this sort of thing, I got a page full of patents and other oddities related to shaving.

1) Although he did state in the patent that “metal, rubber, wood, or any other suitable material” could be used. Only metal makes sense in the face of the drawing though.

The safety razor of James Hartness

James Hartness was a prolific inventor, with quite a few patents to his name. While most of them are for machines and machine tools, he also dabbled in safety razors. In 1905 he was awarded a patent for one, specifically set up for disposable blades. Quite the novelty that early, considering that Gillette were trying to set up a system where blades could be returned for sharpening1, and Kampfe, Clemak, Christy (and others using his blades) and even Curbo were selling blade the user could hone at home.

The blades for the razor were to be small, easily manufactured and inexpensive. In fact, they could be made by the mile, once a factory was set up. To quote the patent directly:

One of the primary objects of the invention is to provide a safety-razor with a miniature blade which may be used so long as it is sharp or keen, and then discarded and thrown away. Preferably, the blade is made of wire. Instead of being formed of sheet metal, the blade, while extremely small in cross-section, is so constructed as to be as rigid as possible, said blade having faces converging at the proper angle to form a sharp cutting edge.

James Hartness, in US patent 896,383

The design

The holder for this wire-blade was quite different from most other safety razor. While superficial similar to the so called hoe-style razor, the edge was not pointing in the same direction as most other razors. Instead if “sticking out” from the side of the head, it were pointing “downwards”. This can clearly be seen on the drawing. I am not sure what James Hartnes were trying to achieve by this, it would make going against the grain somewhat awkward on the cheeks.

The patent drawing for James Hartnes' safety razor.
Patent drawing for US patent 896,383

The blade would be positively tiny. The form and dimensions are given in the patent text;

The blade itself, as previously stated, is made of Wire. It is very small in size, being not more than one eighth of an inch wide and one sixteenth of an inch, or less, thick, at its back. The two faces d1 d2 of the blade are preferably ground flat, and they form with the base or back d3 an isosceles triangle. The blades are made from a length of wire which is properly ground and tempered.

JAMES HARTNESS, IN US PATENT 896,383

This small wedge shaped blade can be seen in Figure 13, bottom centre of the drawing. The unusual angle of the blade’s edge can be seen in Figures 1 and 5. The head itself is a three part clamp, where rotating the handle moves a cam. The cam in turn moves the upper and lower part of the head in relation to each other. This loosens or tightens the clamping force on the blade. If turned one way, the lower part of the head were loosened to replace the blade. Turned the other the whole head would come off. This would be useful for cleaning, and also for storage. In a way, the cam were as critical to the design as the blade were.

Final thoughts

The razor is simple enough. Few parts, although a bit of precision machining would have to happen to the camming surface on the handle. The razor suffered, I feel, from the odd angle of the blade. This may be why I cannot find any references to it being manufactured.

The whole patent can be read at Google Patents. And if you like old shaving patents and other oddities, I got a page full you can check out.

  1. They would send you one new blade for each two you sent in. You could also buy resharpened blades for less than the price of new ones.

The workmanlike razor of Joseph Turner

Joseph Turner did what many others did around the turn of the last century; he invented a safety razor. A safety razor that was, according to the patent, easily manufactured, as well as efficient and convenient in use. It is also a very workmanlike1 razor to my eye. And I believe a similar razor could be manufactured today, possible for the GEM blades.

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