| 摘要 |
347,721. Ladders. DIX, C. W., Tower Engineering Works, Tower Street, Newcastle-on-Tyne. Jan. 21, 1930, No. 8581/31. Divided on 347,671, [Group I]. [Class 20 (ii).] A ladder for a swimming bath has side members a<1> preferably of teak carrying treads a<2> and having at the lower ends dowels a<3> fitting in sockets a<4> in the bath bottom. Tubular rails a<5> rising above the level of the bath are bent down so that flanges a<7> on the ends are secured to flanges a<8> grouted in position on the top edge of the bath. The treads decrease in width towards the top. |
