NON CONNU DéTAILS PROPOS DE PRESSES ISOSTATIQUES à FROID

this sketch represents a press in its completed form, with tympans attached to the end of the carriage, and with the frisket above the tympans. The tympans, inner and outer, are thin iron frames, one fitting into the other, nous-mêmes each of which is stretched a skin of parchment or a breadth of belle cloth. A woollen blanket or two with a few sh