Cooley's cyclopaedia of practical receipts and collateral information in the arts, manufactures, professions, and trades including medicine, pharmacy, hygiene, and domestic economy : designed as a comprehensive supplement to the Pharmacopoeia and general book of reference for the manufacturer, tradesman, amateur, and heads of families . n inch). 2. Blacks blowpipe. 3. Bergmans „ 4. Pepys „ 5. WoUastons „ 6. Oxy-hydrogen blowpipe The principal varieties of the blowpipe iq 324 BLUBBER—ELUE general use are fignred in the engravingsabove. Beside the above there are several othervarieties of the bl
Cooley's cyclopaedia of practical receipts and collateral information in the arts, manufactures, professions, and trades including medicine, pharmacy, hygiene, and domestic economy : designed as a comprehensive supplement to the Pharmacopoeia and general book of reference for the manufacturer, tradesman, amateur, and heads of families . n inch). 2. Blacks blowpipe. 3. Bergmans „ 4. Pepys „ 5. WoUastons „ 6. Oxy-hydrogen blowpipe The principal varieties of the blowpipe iq 324 BLUBBER—ELUE general use are fignred in the engravingsabove. Beside the above there are several othervarieties of the blowpipe occasionally employed;one in which the air is expelled by the pres-sure of a column of water, and hence called theHTDEOSTATic BLOWPIPE; another, in whichthe flame is blown with the vapour of boilingalcohol, is named the spirit-blowpipe. Blowpipe, Herapath. For sealing and bend-ing glass tubes and constructing glass appa-ratus of various forms, it is convenient to havethe blowpipe mounted on a fixed support, andwhen a flame of considerable power is required,the blast must be supplied by bellows workedwith the foot. Avery convenient form of blow-pipe for these purposes is that invented byHerapath, and represented in the followingfigure, a is a flexible tube attached to a stop-cock (S), which communicates with a tube. to the purpose, and having beneath it a pairof bellows worked by a treadle. A simple and inexpensive apparatus forsupplying a continuous blast of air for blow-pipe or other purpose is figured below. It consists essentially of a tin tube (towhich is fixed a branch tube open to the air),through which water may be driven irom asupply tap into a properly fitted bottle. Airbecomes thus entangled with the water in itscourse through the tube, and carried with itinto the bottle. The water is then got rid ofby means of a syphon, and the air is con-ducted by an elastic tube to the blow-pipe. (c d), bent at right angles at d, where a Tshaped tube {efg) slips on b
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