Lt Colonel Jacob Schick invented his first razor in 1921 which was inspired by a repeating rifle. It went into production in 1926 at which time the "Magazine Repeating Razor Company" was founded. He sold the company in 1927 to persue other interests. Worldwide they are second in sales to Gillette.

Fast forward to the 1960's at which time it was owned by Patrick Frawley and when they started producing adjustable razors. It was also around this period (1970) that the company was sold to Warner-Lambert Company.

Although the Krona is far more collectable than the injectors - it is the injectors that Schick are most well known by so I'll start with them.
All the injectors are Type M's and there appear to be five versions dating from about 1965 to 1980. The one is considered a prototype.

They also made an adjustable Cartridge razor and the Techmatic Band razor.

We will move onto the Krona Adjustable HERE
Its the only DE Adjustable that was manufactured by Schick but it never went into production.