The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . in automati-cally between the first and second rollers. The Avire net-ting is heated very hot, being at the time of incorporationwithin a few degrees of the temperature of the meltedglass. A very long, cast-iron table is set in the floor andheated by gas flames, so that it will not chill the all is ready, a large ladle of molten glass is with-drawn from the blazing furnace, and carried between twoworkmen to the table, where it is tipped up and ])oured, insuch a manner as to
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . in automati-cally between the first and second rollers. The Avire net-ting is heated very hot, being at the time of incorporationwithin a few degrees of the temperature of the meltedglass. A very long, cast-iron table is set in the floor andheated by gas flames, so that it will not chill the all is ready, a large ladle of molten glass is with-drawn from the blazing furnace, and carried between twoworkmen to the table, where it is tipped up and ])oured, insuch a manner as to distribute its contents well over thetable. Then the vehicle on the table, with its four rollers. WIRE NETTING IN GLASS. 337 which have also been kept hot, is rolled from the end ofthe table, along a little track. Roller No. 1 smooths and spreads the glass so that it pre-sents a level surface. With and before roller No. 2 comesthe red-hot netting, which slides down an inclined irontable and is pressed deep into the glass by the corrugationswith which this roller is furnished. Roller No. 3 serves Fig. to smooth over the glass and cover the wire, while rollerNo. 4 prevents the glass, which tends to become plasticat this stage, from curling up behind roller No. 3, and alsoassists a further smoothing of the glass. The next process is the annealing, which serves totoughen the product. After this the glass requires onlytrimming to standard size to be ready for the market. Asit is both inconvenient and difficult to cut both glass andwire in trimming, the wire introduced is of the size of thecompleted product, and the trimmer simply cuts the glassdown close to the edge of the wire. 338 WONDERS OF MODERN MECHANISM. Sometimes it is desired to corrugate the wire withiu theglass, and this is readily done by making the ribbed sur-face of roller No. 2 Avith undulations that depress thehot wire more at some points than at others. The rollsare very heavy, being made to deliver a pressur
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectmechanicalengi
