ing very high temperatures without crack- the "Salus" street cleaner, is mounted upon two pairs tubes have proved of great importance in my work ing. It is well known that glass vessels must be an- of large wheels and a pair of small wheels in the front on hydrogen gas submitted to very high… … to the broom. heated to a red AN HYGIENIC STREET-SWEEPING MACHINE. Owing to the heat or even high- curved form of the broom the mud is driven in toward under the powerful electrical discharges, but the er in a muffle furnace. They are then thrown into the middle, collecting there upon a platform,…
Patents · Gun · Sight · Electrical engineering · Horse power · Scientific American · Illustrated catalogue · Great Britain · Water power · Gun captain · Marginal efficiency · Side armor · Sight setter · Alternating current
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