| 摘要 |
PCT No. PCT/AU92/00017 Sec. 371 Date Sep. 22, 1993 Sec. 102(e) Date Sep. 22, 1993 PCT Filed Jan. 17, 1992 PCT Pub. No. WO92/13246 PCT Pub. Date Aug. 6, 1992.An elongate lance (4) is raised or lowered by means of a carnage (7) which is guided by vertical channels (8). The lance has lateral projections (18) whereby it is supported in a cradle (17) mounted to carriage (7) via springs (29). The apparatus permits the lance lower end (12) to be submerged in bath (3) and permits restricted lateral movement of the lance lower end.
|
