SELF-ADJUSTING PRELOAD MECHANISM
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01
Xerox Disclosure Journal
In many high-speedprinting devices, the carriage for the printing mechanism is attached to a motor driven cables In these high-speeddevices, the carriage must be moved rapidly and positioned accurately by the cables Long term stretching of the cable, - due to fatigue, allows the cable to become slack affecting positional accuracy- The drawing shows a structure designed to maintain a constant cable tension even though the cable were to stretch- A block of high friction material 1, such as a bushing material, is held in place by a normal load spring 2- This holds the preload spring 3 in place, which in turn keeps a constant preload on the cable 4. Should the cable 4 stretch, the preload spring 3 will force the friction block 1 back regaining close to the same preload tension on the cable as there was prior to cable stretching.