The Practical mechanic's journal . rod, marked b, oughtto be of iron, but not hollow;this serves to take up the glassafter it is blown and cut off theformer, so that there remainsnothing to do to it but perfectit The scissors, marked c, arethose which serve to cut theglass when it comes off the firsthollow iron, when it is givento the master workman. The shears, marked D,serve to cut and shape the greatglasses, as also the lesser, toopen them and make them morecapacious. The instruments, markede. serve to finish the work, which the Italians call Pontiglo, Passayu,ProceVo. Spici, and also Borse
The Practical mechanic's journal . rod, marked b, oughtto be of iron, but not hollow;this serves to take up the glassafter it is blown and cut off theformer, so that there remainsnothing to do to it but perfectit The scissors, marked c, arethose which serve to cut theglass when it comes off the firsthollow iron, when it is givento the master workman. The shears, marked D,serve to cut and shape the greatglasses, as also the lesser, toopen them and make them morecapacious. The instruments, markede. serve to finish the work, which the Italians call Pontiglo, Passayu,ProceVo. Spici, and also Borsello, whereof we want the figure. The great ladle, marked f, is of iron, the end of the handle beingonly done over with wood; it is with this you take out the metal of thegreat pot. The little ladle, marked 6, is also of iron, and covered with wood atthe handle; this serves for skimming the metal, and taking off the alka-lic salt, which swims at the top, as also to take the metal out of the pots,and cast it into water to refine Thegreat and little shovelsor peels, marked h, serve onlyto take up the great glass. The less is called the littleshovel, and they make use ofone like this to draw out thecoals and ashes of the furnacewhere the fire is made. The hooked fork, markedI, serves to stir the matter inthe pots. The rake, marked k, isalso of iron, and the handle ofwood; it serves to stir the mat-ter, as also to move about thefritt in the first oven. The instrument marked lis for making chamber-pots. The fork, marked m, ismade also of iron, and the han-dle of wood; there are of themseveral bignesses, they serveto carry the glass works intothe upper oven to cool them. The great ladle, marked n,is of brass, full of holes aboutthe bigness of a pea; this ladleserves to take off the from the kettles as fast asthe lee evaporates [ in refin-ing the flux.] There are also severalmoulds, both of marble andbrass, and also copper, butwhich would be too tedioushere to des
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Keywords: ., bookcentury1800, bookdecade1840, bookidpra, booksubjecttechnology
