Appleton's dictionary of machines, mechanics, engine-work, and engineering . I! 1 11 if\\\\\\L j. fmm handu during the ascent of the piston between it and tho sides of the cylinder, is now below the piston, andthe spring in forcing the latter down will tend to force the oil out through the tube D to the force of the spring and the resistance offered by the silver tube are so proportioned that tho sup-ply of oil shall last eight or ten hours. The thick consistence of crude whale oil offers such powerful resistance to the action of capillarityat the ordinary temperature of the air, th
Appleton's dictionary of machines, mechanics, engine-work, and engineering . I! 1 11 if\\\\\\L j. fmm handu during the ascent of the piston between it and tho sides of the cylinder, is now below the piston, andthe spring in forcing the latter down will tend to force the oil out through the tube D to the force of the spring and the resistance offered by the silver tube are so proportioned that tho sup-ply of oil shall last eight or ten hours. The thick consistence of crude whale oil offers such powerful resistance to the action of capillarityat the ordinary temperature of the air, that the oil cannot be burned in common lamps, unless it ispreviously rendered more fluid by the aid of heat. To effect this a very ingenious form o( lamp hasbeen introduced, called the Economic, or hot oil lamp. The oil reservoir of this lamp. Rg. 2498, iscomposed of a double cylinder surrounding the upper part of the chimney, which is constructed ofVol. II.—12 178 LAMPS. metal and slightly curved outwards, so as to reverberate the heat upon the oil vessel, and heat the oilto a considerable
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
