Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 361
by means of which the revolving bed, after being lowered by the screwL, may be withdrawn from beneath the arched cover for repairs or other-wise. The wheels of the lower framerun upon rails, It; M is a sand-joint forpreventing the access of cold air intothe furnace between the fixed top andthe…
Science · Patents · Meteorology · Technology
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