REPERTORY OF PATENT INVENTIONS, AND OTHER Discoveries and Emprovements IN ARTS, MANUFACTURES, AND AGRICULTURE; BEING A CONTINUATION, ON AN ENLARGED PLAN, OF THE Repertory of Arts and Manufactures: A WORK ORIGINALLY UNDERTAKEN IN THE YEAR 1794, AND STILL CARRIED on, with ENLARGED SERIES.-VOL. XXXII. LONDON: PUBLISHED FOR THE PROPRIETOR, BY ALEXANDER MACINTOSH, GREAT NEW-STREET; G. HEBERT, CHEAPSIDE. THE REPERTORY OF PATENT INVENTIONS. No. 1. VOL. XXXII. ENLARGED SERIES.-JULY, 1858. Specification of the Patent granted to THOMAS BROwn, of Fenchurch-street, in the City of London, for Improvements in Machinery for Raising and Lowering Weights.-Dated August 26, 1857. WITH AN ENGRAVING. To all to whom these presents shall come, &c., &c.This invention has for its object improvements in machinery for raising and lowering weights. For these purposes an upright barrel or capstan is used, the upper part of which is formed with long inclines, whilst the lower part of the barrel is formed with short curved inclines. The rope after passing the guide pulley takes several turns round this barrel (generally four), when it passes between two rollers or pulleys on parallel axes, which are carried by an upright frame which is capable of moving on an axis, in such manner that when the rope is being wound on a barrel or drum at a distance, the frame inclines over towards such barrel or drum, so that the rope can pass to such barrel or drum in a straight line, and not be resisted by the two rollers or pulleys; but when the rope is being run back to lower a weight, the frame carrying the two No. 1.-VOL. XXXII. B |