society > communication > printing > printing machine or press > parts of printers or presses > [noun] > tympan > frame supporting > sockets of
gallows-sockets1841
1841 W. SavageDict. Art of Printing 249Gallows Sockets. Two pieces of wood with square mortises in them, to receive the ends of the gallows; they are nailed or screwed upon the plank behind the tympans.