| 摘要 |
471,352. Making pins; uniting by fusion. HERAEUS GES., W. C. Feb. 25, 1937, No. 5645. Convention date, March 9, 1936. [Classes 83 (ii) and 83 (iv)] [Also in Group XV] The tubular writing-element 2 of a stylographic pen has a bead 3 of hard ink-resisting alloy secured to its end, the bead being secured in position by inserting a rod 5, loosely carrying a number of beads 3, 4, into the bore of the element 2, welding the first bead 3 on to the element and removing the rod. |
