Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 435
For use in Gas Works for removing the gas from the retorts to the gasometer,and in Lead Works for forcins; carbonic acid gas into the corroding rooms, and also,for use in Chemical Works where any kind of gas is to be distributed. … The object of publishing the accompanying engravings in connection with otherinformation on Blowers is to enable parties to avoid mistakes in their calculations forobtaining the requsite speed on Blowers. In all cases where the purchasers of the Sturtevant Blower fail to realize all thatthey…
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