Patent GB-190526260-A (GB)
Title: Lay Motion for Looms.
Inventor: WEISSENBORN ALBERT BERNARD
Filed: 1905-12-16
Granted: 1906-12-13
Abstract: 26,260. Weissenborn, A. B. June 3, [date applied for under Patents Act, 1901]. Loom beat-up motions ; lays. - In hand - power looms, such as are used for wire weaving, the lay is drawn back to a predetermined extent by fluid pressure controlled electro-magnetically, and is returned by spring action to beat up the weft. A downwardlyextending flange 13 on the lay 11 is connected by a swivelling connexion to the piston-rod 19 of an air - pressure cylinder 20, which is pivotally supported by means of a trunnion in a bearing 27. This bearing has a vertical stem, which is pivotally mounted in a clamp-beari n g o n a standard 30. The rear end of the cylinder 20 is open, and the closed front end is connected by a passage 31, Fig. 2, to valve mechanism, comprising inlet and outlet valves 33,34, which are mounted on spring- pressed rods 38, 39. Spring push-buttons are mounted at intervals on shells covering recesses at the ends of the lay cap, and when one of the buttons is pressed, its blade-spring contacts with a blade - spring mounted within the shell, and completes an electric circuit 57, Fig. 1, comprising a battery and an electromagnet 56. The armature 55 of the magnet is moved to complete a circuit 54 of electriclighting voltage, and an electro-magnet 47 of comparatively high resistance is energized. The spring-controlled armature 45, Fig. 2, of the magnet is attracted, and acts through a link 44 on the pivoted lever 42, which is moved to free the valve-rod 39 and allow its spring to close the outlet valve 34, and to push the valve-rod 38 against the action of its spring to open the inlet valve 33. Compressed air, supplied by a flexible pipe to a chamber 35, is admitted through the valve 33 and the passage 31 to the cylinder 20, and acts upon the piston, so that the lay is drawn backwards by the piston-rod 19. A lever 64, pivoted on an arm 65 of the standard 30, is connected at its upper end to the lay flange 13 by a rod, and at its lower end to an adjustable spring 66. As the lay moves backwards, the spring 66 is extended, and an arm 73 on the lever 64 strikes the lower end of the piston-rod of a cylinder 71, which is open at its lower end and closed at its upper end. The upper end is connected to a check valve 77 and to a petcock 76, and the piston-rod extends through the cylinder. When the arm 73 strikes the piston-rod, the piston is forced upwards slowly, the air escaping through the pet-cock, and the check valve being closed, until the upper end of the rod comes against an adjustable stop. The lay remains in its rearmost position until the circuits 57, 54 are broken by the release of the push-button, when the armature 45 is forced away from the electromagnet 47 by its spring 52, and the consequent movement of the lever 42 closes the valve 33 and opens the valve 34, thus allowing the air to escape through a discharge outlet 37. The spring 66 then acts through the lever 64 and its connecting- rod to swing the lay forwards to beat up the weft, the force of the teat-up being regulated by the adjustment of the spring 66. When the arm 73 leaves the piston-rod of the cylinder 71, the rod drops, the check valve 77 opening to admit air to the cylinder. The back end of the cylinder 20 is connected by a spring 70 to the arm 65 to balance the weight of the valve mechanism, and a hood 25 prevents oil from being thrown on to the warp beam. The electro-magnet 47 may be controlled directly by the push-buttons, the spring returning- means may be connected to the piston of the cylinder 20, and the cushioning and limiting of the backward motion of the lay may be effected by means connected with the piston of the cylinder 20.