stuffing box (stufingboks)

In mach., a con trivance for securing a steam-, air-, or watertight joint when it is required to pa a movable rod out of a ve el or into it. It consists of a close box cast round the hole through which the rod pa es, in which is laid, around the rod and in contact IMG:content-2319.png:[blocks in formation] a, cylinder-head; b, box cast integrally with the head a; c, pob rod; d, d, packing wound about the rod; e, follower for compre ing the packing; 1, 1, bolts and nuts for forcing the follower against the packing. with it, a quantity of hemp or india-rubber packing. This packing is lubricated with oily matter, and a ring is then placed on the top of it and pre ed down by screws, so 88 to squeeze the packing into every crevice. The stuffing-box is used in steam-engines, in pumps, on the shaft of a screw steamer where it pa es through the stern, etc. Also called packing - box. Lantern stuffing-box, a long stuffing-box with tightening-bolts, used in some marine engines. E. H. Knight. In