The book of trades; or, Familiar descriptions of the most useful trades, manufactures, and arts practised in England : and the manner in which the workmen perform their various employments.
(undated, inscribed 1829)
The glass-blower., pp. 52-53
:iJ GLASS BLOWER. GLASS is a very ancient invention; the furnace in which it is melted is round, and has several apertures, in one of which the fuel is introduced; the others serve to lade out the melted matter. When the ingredients are perfectly fused, and have acquired the necessary degree of heat, part of the melted matter is taken out at the end of a hollow tube, about two feet and a half long, which is dipped into it and turned about till a sufficient quantity is taken up; the workman then rolls it gently upon a piece of iron to unite it more intimately. He then blows through the tube till the melted mass at the extremity swells into a bubble; af. ter which he again rolls it on a smooth surface to polish it, and repeats the blow- ing till the glass is brought as near the size and form of the vessel required, as he deems expedient. There are three principal kinds of glasses, distinguished by the manner and form of working them; viz. round glass, (as bottles, drinking glasses,) ta- ble or window glass, and plate glass. There are also several kinds of table glass. F 3
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