GB179279A - Belt gearing - Google Patents

Abstract

179,279. Fairweather, W., (Singer Manufacturing Co.), Feb. 1, 1921 Gearing for driving two or more machines.- Relates to gearing of the kind in which a band may be placed on a pulley with the aid of a bandcatching tooth and thrown off into a space between the pulley and a retaining-ring. This retaining-ring is in the form of a disc 11, Fig. 4, spaced from and rotating with the pulley 5. The pulley 5 has a deep V groove 6, one of the walls of which is cut away at 8, Fig. 3, to allow the band to be placed on or off the pulley when turning in either direction. In disconnecting, the band 15, Fig. 1, is moved clear of the catching- tooth 9 by a shifter 17. The invention is described as applied to a power table supporting a number of button-holing machines 12, driven by one continuously rotating power shaft 4. The pulley 5 drives the machine and a similar pulley 38 drives the cutter through a one-revolution clutch 34. A parallel motion is given to the shifter 17 and to the other shifter 41 by a pair of parallel pivoted links 20 actuated through a lever 24 the movement of which is limited by a lug 29 between stops 20. The lever 24 is connected by a link 25 to a rod 27 with a handle 28, Fig. 2, which extends outside a guard 45. The rod 27 is held in either extreme position by a leaf spring 31 bearing upon it.