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See also:COMB (a word See also:common in various forms to Teut. See also:languages, cf. Ger. Kamm, the Indo-Europ. origin of which is seen in yoµSee also:ros, a peg or See also:pin, and See also:Sanskrit, gambhas, a tooth) , a toothed'See also:article of the See also:toilet used for cleaning and arranging the See also:hair, and also for holding it in See also:place after it has been arranged; the word is also applied, from resemblance in See also:form or in use, to various appliances employed for dressing See also:wool and other fibrous sub-stances, to the indented fleshy See also:crest of a See also:cock, and to the ridged See also:series of cells of See also:wax filled with See also:honey in a beehive . Hair combs are of See also:great antiquity, and specimens made of See also:wood, See also:bone and See also:horn have been found in Swiss See also:lake-dwellings . Among the Greeks and See also:Romans they were made of See also:boxwood, and in See also:Egypt also of See also:ivory . For See also:modern combs the same materials are used, together with others such as See also:tortoise-See also:shell, See also:metal, See also:india-See also:rubber and celluloid . There are two See also:chief methods of manufacture . A See also:plate of the selected material is taken of the See also:size and thickness required for the See also:comb, and on one See also:side of it, occasionally on both sides, a series of See also:fine slits are cut with a circular saw . This method involves the loss of the material cut out between the See also:teeth . The second method, known as " twinning " or " parting," avoids this loss and is also more rapid . The plate of material is rather wider than before, and is formed into two combs simultaneously, by the aid of a twinning See also:machine . Two pairs of See also:chisels, the cutting edges of which are as See also:long as the teeth are required to be and are set at an See also:angle converging towards the sides of the plate, are brought down alternately in such a way that the wedges removed from one comb form the teeth of the other, and that when the cutting is See also:complete the plate presents the See also:appearance of two combs with their teeth exactly inosculating or dovetailing into each other . In indiarubber combs the teeth are moulded to shape and the whole hardened by vulcanization . |
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