Stanley Matthews, Thatcher Heating Company v. Burtis…
“ But the improvement in the fire-place heater was the result merely of the single change produced by the introduction of the fuel magazine, but one element in the combination. The new and improved result in the utility of a fire-place heater cannot be said to be due to anything in the combination of the elements which compose it, in any other sense than that it arises from bringing together old and well-known separate elements, which, when thus brought together, operate separately, each in its own old way. ”
