Turbine Fluid Drive — An Innovation for Film-Processing Machines
Little has been done in the past 35 years to improve the conventional transport devices for film-processing machines; these devices are the sprocket drive and the various types of tendency drives, including electric clutch, felt disc clutch and bottom-roller drives. Recently, a new method for transporting film — Turbine Fluid Drive — has been used to equip a negative processing machine. These drive units are incomplex and comparatively small: 4 in. in diameter and 5 in. long. The drive functions with a fluid action. The ratio between film being fed into the machine vs. the constant 12% to 16% overdrive of the driven roller results in a progressive, smooth pull. Film is processed at speeds in excess of 300 ft/min, and the turbine unit requires no replacement of parts and little or no maintenance.
- Print ISSN
- 0361-4573
- Published
- 1967-09
- Content type
- Original Research
- DOI
- 10.5594/J10950