. Appleton's dictionary of machines, mechanics, engine-work, and engineering. ing is guarded against. It will be inferred from the foregoing description that the frequent necessity for opening the watch isdone away; hence results another, and not the least improvement effected by the contrivance: in theold construction of the watch-case, dust will penetrate to the interior of the watch, however seldom itmay be opened, through the number of passages necessarily consequent on the existence of hinges inthe case; these being dispensed with in the watch now described, the glass and case are as near
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. ing is guarded against. It will be inferred from the foregoing description that the frequent necessity for opening the watch isdone away; hence results another, and not the least improvement effected by the contrivance: in theold construction of the watch-case, dust will penetrate to the interior of the watch, however seldom itmay be opened, through the number of passages necessarily consequent on the existence of hinges inthe case; these being dispensed with in the watch now described, the glass and case are as nearly air-tight as possible, while the dust which makes its way in the ordinary watch to the works each time thecase is opened for the purpose of winding up, or of setting the hands, is now altogether excluded; thuscleaning the watch will not be so frequently required as heretofore. WATER-CLOSET—By G. Jennings. This closet is intended to remedy the defects of the pan andvalve closet. It has neither the usual metal pan or valve, so that no chamber is required, which prevents. displacement of pure air when used—an evil so justly complained of in pan or other closets. 3767. 3768.
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
