 | Encyclopedias and dictionaries - 1888 - 870 pages
...БО cwts. was heavy enough to «ink itself, and being 41 feet in height, 4J feet in length, and 3 feet wide, afforded room sufficient for two men at a time to work nnder it But it was peculiar to this machine that the men therein were supplied with a constant influx... | |
 | Encyclopedias and dictionaries - 1907 - 758 pages
...being 5Ü cwts. was heavy enough to sink itself, and being 4J feet in height, Ц feet in length, and 3 feet wide, afforded room sufficient for two men at...theirs, that necessary article being amply supplied by & forcing air-pump in a boat upon the water's surface."2 It will thus be seen that Smeaton's Ramsgate... | |
 | Sir Leonard Hill - 1912 - 278 pages
...height, 4£ feet in length, and 3 feet wide, afforded FIG. 12. — SIEBE'S FIRST DIVING HELMET. room for two men at a time to work under it. But it was...forcing air-pump in a boat upon the water's surface." Brize-Fradin (1808) made improvements in the ventilation of diving bells, cooling the compressed air... | |
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... for two men at a time to work under it. But it was peculiar to this machine that the men therein were supplied with a constant influx of fresh air, without any attention of theirs; that necessary article being amply supplied by a forcing Air Pump,... 