Mr Dunn’s Single Edge Razor for Double Edge Blades

Recently tweeted about a razor patent that I’ve never seen before and it has some really intriguing features. It was filed in 1908, and the patent granted in 1912. It’s a patent by Clifford E Dunn, whom we have meet before.

One of described forms is a single edge razor using a double edge blade – not a unique idea by itself, but this is one of the earliest ones I know of. That design is set up to use Gillette’s three hole blade1 – thus avoiding having to reintroduce yet another blade on the market. Other forms can use a single edged blade – the early Gem blade might work, or a Christy style blade.

On to the patent, which described – according to the text – “certain new and useful Improvements in Safety-Razors”. To quote:

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Anestis Foltis’ folded safety razor

Disposable safety razors were patented from time to time in the past. Usually they were just a regular safety razor made from cheap or disposable materials. Sometimes they were a minor stroke of genius. Sometimes they were plain odd. Mr Foltis’ safety razor made from bent sheet metal is one of the later two.

An important object of the invention is to provide an inexpensive safety razor having an integral razor blade of small size whereby the entire razor must be disposed of after the blade becomes too dull for shaving purposes.

US patent 2,550,056
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Cathodic protection of razor

Cathodic protection is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. This can either be done by using a sacrificial anode made from sink or similar material, or by applying an external direct current.

So… what has that to do with shaving? Well… normally it don’t, but J Duggan’s 1971 patent application on behalf of Warner Lambert Co combines the two.

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1936 Micromatic advertisement – effortless shaving

No effort, no scraping, no irritation – it just melts your whiskers away.

I’m not convinced about the melting of hairs, but the Micromatic is a very nice little razor. For just a dollar you could get not only a gold plated razor, but also five of the new blades developed alongside the Micromatic. In 1936, the Micromatic was a pretty recent razor – the mechanism having been patented in 1929.

In today’s money the razor (with blades) would cost just shy of 19 US dollars. Not a bad price for a razor that assuredly has stood the test of time.