New or improved directive mechanism for ventilating fans, light projectors, jet devices and the like

摘要

207,255. Stone & Co., Ltd., J., and Vidal, J. F. B. Aug. 22, 1922. Mounting.-A fan, light projector or jet producing apparatus is mounted on a gimbal support and carries a guiding pin r, Fig. 1, which is caused to move along a cam-groove p cut in a spherical surface j concentric with the gimbal support. The pin r projects axially from a spur wheel t rotated, in the case of an eccentrically driven fan, by the electric motor and' gears with pins q adjacent the cam groove. More than one cam-groove may be provided, and, if two are parallel, a single row of pins placed between them will serve for both. In place of smooth grooves and associated pins, one side p6, Fig. 5, of a cam-groove may be toothed and' the pin r may be replaced by a toothed wheel. The part q providing the spherical surface is slidingly mounted in a cylindrical part k, Fig. 1, and can be moved axially to disengage the cam-groove in the surface from the pin r. The shaft t has a conical boss 5 held in frictional engagement with a socket in a part 2 by a spring washer. The part 2 is toothed internally and is engaged by a worm wheel v. The worm on the wheel v is cut crosswise into teeth, as shown in Fig. 5, which are engaged by a worm w on the shaft of the motor a.