The Emporium of arts & sciences . ary, while it points out to the manufacturer many con-siderable advantages, in the use and recovery of his mer-cury, will also, it is hoped, be found interesting to manyreaders of the Philosophical Magazine. The copper, properly alloyed, is first taken to a roll-ing mill, and reduced between iron rollers to a properthickness for the button. The sheets of copper are thenbrought to the button manufactory, and cut into circularpieces of the size of the intended button by means of afly-press. In this state they are called blanks, and re-semble halfpence and farthi
The Emporium of arts & sciences . ary, while it points out to the manufacturer many con-siderable advantages, in the use and recovery of his mer-cury, will also, it is hoped, be found interesting to manyreaders of the Philosophical Magazine. The copper, properly alloyed, is first taken to a roll-ing mill, and reduced between iron rollers to a properthickness for the button. The sheets of copper are thenbrought to the button manufactory, and cut into circularpieces of the size of the intended button by means of afly-press. In this state they are called blanks, and re-semble halfpence and farthings worn smooth by long cir-culation. The shanks, which are made with wonderful facilityand expedition by means of a very curious machine, arethen secured to the bottom of each button by a small ironcrank, and a small quantity of solder and rosin appliedto each. Thus they are placed on a sheet of iron, con-taining about a gross, and introduced into a very hot * Tilloch, vol. 9, p. 15, /j^j/rr//.) *////// ?<//«/ fwr//.s/tr//. - 7ia//,j. ftp?
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Keywords: ., bookcentury1800, booksubjectindustrialart, booksubjecttechnology
