The plumber and sanitary houses : a practical treatise on the principles of internal plumbing work, or the best means for effectually excluding noxious gases from our houses / by S. Stevens Hellyer.
- Hellyer, S. Stevens (Samuel Stevens)
- Date:
- 1893
Licence: Public Domain Mark
Credit: The plumber and sanitary houses : a practical treatise on the principles of internal plumbing work, or the best means for effectually excluding noxious gases from our houses / by S. Stevens Hellyer. Source: Wellcome Collection.
492/536 (page 444)
![Date. Wind. Atmos. Cowls Tested. First Ten Min. P. F. Second Ten Minutes. P. G. Result Two Ten Min. Difference. In favour of 1880. July 20 N.W. Light. f Banner's ( Scott-Dunn's Ft. up. 2041 Ft. up. 2011 = 1334 = 3575 I 3375 ) 200 Ban. II 20 II II f Banner's \Vacuum .... 2059 1209 1972 = 2471 = 40311 3680/ 351 Ban. II 19 W. II I Banner's .... 2281 2169 1878 = 1582 = 4159]. 3751 ) 408 Ba ,1 '9 II II t Buchan's .... 2719 2829 24S0 = 3346 = 5199]. 617s J 976 Bu. n 19 II II It ( Hamilton's.. 1664 1632 3379 = 2248 = 5043 I 3880/ 5143 I 5308; 1163 Bo. HeU 19 II \ Hellyer's .. 3028 2419 2113 = 2889 = 16s >i 19 II it ( Howorth's .. 2562 1985 2475 = 2953 = 5037 I 4938) 99 Bo. 19 » 2629 2301 2618 = 1245 = 5247 I 3546/ 1701 Bo. >i 19 II II 1 Scott-Dunn's 2199 1353 1087 = 1609 == 32861 2962 ) 324 Bo. >• 19 II 11 1401 161S 3533 = 2321 = 4934 I 3936) 998 Bo. u i£ II II t Weaver's.... 3607 3181 3843 = 4151 = 74501 7332/ 118 Bo. « 2f ) N.W. •1 ( Buchan's .... \ Banner's .... 2378 1909 1971 = 1029 = 4349 I 2938) 1411 Bu. >. ». J» ' J s.w. 3 » 1) ( Buchan's ... 1830 1981 1627 = 955 = 3457 I 2936 J Sai Bu, \ Hamilton's. . 1880 1 93' = 4200 ) 2S11 i](https://iiif.wellcomecollection.org/image/b20385353_0498.jp2/full/800%2C/0/default.jpg)