GB178743A - Multiple needle sewing machine - Google Patents

Abstract

178,743. Fairweather, W., (Singer Manufacturing Co.). May 23, 1921. Multiple needle machines; lock-stitching by hooks.-Four needles 5, 5, 6, 7, co-operate with four rotary loop-takers 10, which can be adjusted independently of one another. Each loop-taker 14, Fig. 4, is journaled in a bearing 15, Fig. 2, which is attached to a loop-taker frame 32, and projects through a slot 36<1> in the bed-plate 36 A thread case 12, journaled in the loop-taker, has a stop lug 19, engaging in a notched lug on the underside of the throatplate. A finger 24 on a lever 25 oscillates the thread case at intervals as usual. The lever 25 is oscillated by an eccentric 26 on the shaft 14, its fulcrum being a follower 28, which works in a slot 27 in the lever, and which is seated in an adjusting-plate 30. The plate 30 embraces a hub 31 on the loop-taker frame 32, and ls variably fixed to the support 32 by a pin-and-slot connection 33. The support 32 is secured to the :bed-plate 36, and is adjustable at right-angles to the feed. The loop-takers are actuated from the needle bar actuating shaft through a shaft 18 and spiral gears 17, 16, so as to give two rotations for one needle reciprocation. A feed dog 38 operates through slots 40 in the throat plate : it extends forwardly between the front needles and a narrow extension 39, and extends rearwardly between the rear needles. The gears are enclosed in an oil bath 15 having a flange 46 to prevent leakage when the machine is tipped.