PHOTOTYPOGRAPHIC COMPOSING MACHINES, AND COMPONENT PARTS THEREFOR, ACCESSORIES COMPRISING SUBASSEMBLIES TO BE ADDED TO AND USED WITH PHOTOTYPOGRAPHIC COMPOSING MACHINES, DATA PROCESSING APPARATUS AND COMPONENT PARTS AND FITTINGS THEREFOR

PHOTOTYPOGRAPHIC COMPOSING MACHINES, AND COMPONENT PARTS THEREFOR, ACCESSORIES COMPRISING SUBASSEMBLIES TO BE ADDED TO AND USED WITH PHOTOTYPOGRAPHIC COMPOSING MACHINES