23 CONSTANT DISPLACEMENT HYDRAULIC PUMPS; HYDRAULIC MOTORS; HYDRAULIC TRANSMISSIONS; CUSTOM BUILT HYDRAULIC MACHINERY FOR SPECIALIZED INDUSTRIAL PURPOSES; HYDRAULIC PRESSES, ATTACHMENTS AND ACCESSORIES THEREFOR, SUCH AS CABINETS USED IN CONJUNCTION THEREWITH, WORK FEEDING ATTACHMENTS AND ACCESSORIES USED THEREWITH, INDEXING ATTACHMENTS, BOLSTERS, FOIL FEEDING AND MARKING ATTACHMENTS, STRAIGHTENING ATTACHMENTS, ELECTRIC TIME DELAY CONROL ATTACHMENTS, DIAL FEED ATTACHMENTS, AND LEVER AND SWITCH OPERATING CONTROL ATTACHMENTS; AND PARTS THEREFOR