Patent GB-191406911-A (GB)
Title: Improvements relating to Rewinding Mechanism for Type-writing Machines.
Inventor: IRELAND WARD STONE
IPC: B41J15/16
Filed: 1914-03-18
Granted: 1915-01-28
Abstract: 6911. Ireland, W. S. March 18, Web-feeding arrangements.-In stenographic and other machines provided with a winding-spool for taking up the web as it is fed forward by the lice-spacing mechanism, the winding-reel is provided with a clutch driven by jointed connexions arranged so that when it is required to unwind the web from the winding-reel for the inspection of the writing, the clutch can be rendered inoperative without detaching any part of the mechanism. The jointed connexions may form part of a device for ensuring uniform feed of the web independently of the variation in the diameter of the roll on the winding-spool. The arrangement is shown applied to a known machine in which the type-levers 7 print on a loose or bowed part of the web 26<a> passing over guides 21, 23, and the line-spacing mechanism comprises feed fingers 15 which cooperate with a roller 13 and are carried by rocking arms 14 connected by a link 34 to the universal bar 32. (1) The winding-reel consists of a core 52 and end plates 43, 49 secured by screws 44, 50 to spindles 42, 47 journaled in sleeves 40, 41 and provided with knobs 45, 48. The core is formed with notches 53 to engage a pin 51 on the disk 49, and the disk 43 is pressed against the core by a spring 46, the spindle 42 being retractable. The sleeves 40, 41 may be formed in arms 36, 37 detachably secured by screws 38 to the framework 1. The di-k 49 is formed with a flange 54 surrounding a loose clutch-disk 55, which is secured to an arm 56 connected by jointed links 62, 63 to the arm 14. The disk 55 is formed with a downwardly tapered recess 58 provided with a roller 60 and is also formed with concentric recesses 57 provided with balls 59 which support the disk. At each depression of the keys the arm 14 is rocked to the rear to operate the line-spacing mechanism and to rock the disk 55 in the clockwise direction, the roller 60 biting the flange 54 and causing the winding-reel to rotate. When the keys are released, the arm 14 rocks to the front and the disk 55 is rocked in the anti-clockwise direction, the roller 60 slipping over the flange 54 and the winding-reel remaining stationary. When it is required to unwind the web, the arm 56 is rotated through approximately 180 degrees to bring the recess 58 to the rear, the taper being then directed upwards so that the roller 60 remains at the bottom of the recess and the clutch is inoperative. The jointed links 62, 63 permit the arm 56 to be adjusted in the manner described, without detaching any part of the mechanism. The link 62 is formed with a hook 65, which overlies the link 63 and prevents the links from buckling downwards. (2) To compensate for the variation in the diameter of the roll on the winding-reel, the link 63 is formed with an arm 66 having a finger 68, preferably curved, adapted to engage the web 26<a>, The links 62, 63 are normally in alinement but when the diameter of the roll has increased sufficiently to bring the web into contact with the finger 68, the finger is lifted and the links 62, 63 are bent out of alinement thereby decreasing the feed-stroke.