GB185627A - Motor attachment for sewing machines - Google Patents

Abstract

185,627. Fairweather, W., (Singer Manufacturing Co.). Sept. 2, 1921. Sewing - machines; driving.-A motor C and a motor-controller D are both mounted on a bracket 17 which can be attached to the standard 7 of a foot-power drop-head sewing-machine, s o that a hand-lever 40, operating the controller, i s situated adjacent to the line of feed. A belt 25, which connects the motor pulley 26 and the machine pulley 16, can be tightened by means of an idler 24, mounted on a slotted arm 23 attached to the bracket 17. A lever 37, pivoted to the controlled case 30, is actuated by a pin 44, Fig. 3, depending from an arm 41 of the lever 40, 41; and a pin 38, depending from the lever 37, actuates in turn a spring contactor 34 which swings over contact points on a resistance element 31. The arm 40 of the lever can be operated by the fingers of the workguiding hand of the operator at will. The controller D and the motor C are wired up to a connection block 52 of fibre &c., which is adapted to receive a supply plug 55. A spring 47, adapted to slide between spaced guides 49 on the underside of the controlled casing 30, sustains part of the weight of the machine, when it is being swung into and out of the cavity 5. Specification 185,024 is referred to.