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2 840,594 through the lower wall or face of the housing end thereof extending through the walls of the the latter may be conveniently manipulated casing, a fan carried by the power-shaft and when necessary. , disposed in a horizontal plane below the cas- ^o From the foregoingdescription it is thought ing, a motive spring for rotating the gearing, 5 that the construction and operation of the de- and a brake -lever having an intermediate vice may be readily understood by those portion thereof bent to form a yoke for en- skilled in the art, and further description gagement with the gearing and its opposite thereof is deemed unnecessary. end extended through the walls of the casing 25 Having thus described the invention, what and provided with a terminal handle for en- xc is claimed is- gagement with the notches in the plate. The combination with a support, of a cas- In testimony that I claim the foregoing as ing suspended from the support and adjust- my own I have hereto affixed ny signature able vertically with respect thereto, a door in the presence of two witnesses. formed in one wall of the casing, a notched WILLIS ALBERT TOMTSON. 15 plate secured to the casing, a train of gearing Witnesses: disposed within said casing, a power-shaft NEPPIE STEvENsON, connected with the gearing and having one W. C. STEVENSON.