Shaving units and dispensers therefor

Back in 1965 Mr Bernard S Hansom filed a patent. It was not a unique event, Mr Hansom filed a dozen or so patents in the 60’s. But what caught my eye was the title; Shaving units and dispensers therefor.

And judging by the drawings it is an absolute unit too; broad and thick. But what exactly is a shaving unit, and why would it need dispensers?

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