Oil colours and printers' inks [microform] : a practical handbook treating of linseed oil, boiled oil, paints, artists' colours, lampblack and printers' inks, black and coloured (1903)
Andés, Louis Edgar, 1848-1925, Morris, Arthur, Robson, Herbert · London : Scott, Greenwood ; Toronto : Copp, Clark · leaf 108
COLOURS AND PRINTERS) INKS. In the older types of lamp, the wick sucks up the fuel, and the attendant had always to take care to keep a supply of it in the reservoir. If this is neglected, the wick burns. This makes it suck up too much fuel, more than the lamp can burn, Most of the excess is simply… … large number of lamps to look after. But from the reservoir shown in the figure the fuel does not flow out until its surface is below the line N. As soon as a little has been burnt, a little air enters the reservoir, which consequently supplies the lamp by gravitation until the opening N is again…
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