Marson, Percival · London, New York [etc.] Sir I. Pitman & Sons · leaf 72
en or covered pots may be used, the capacityof which varies between 5 and 12 cwts., according to 56 GLASS the class of glassware manufactured. The furnace isdesigned in four, six, and eight pot types, and severalare now working in this country. These Hermansenfurnaces are capable of producing 20… … PLAN OF HERMANSEN S FURNACE(Eight Pot Type) compact, it takes up little space and is easy to repair,and its Ufe well surpasses other types. The initialoutlay and cost of erection varies from £850 to ;f 1,200.The combustion in this type of furnace is so perfect thatit is used with open crucible pots…
Glass manufacture
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