| 摘要 |
A controlled film advance apparatus is disclosed in my U.S. Pat. No. 4,048,782 as issued on Sept. 20, 1977. It has been found that the apparatus and method of film advance as carried on the frame of the reference patent is advantageously returned at a speed which is greater than the forward speed. This film is intermittently moved and provides a longer period of repose as the films are formed, shaped or provided with similar operations. The improvement as shown in the drawings provides a means to adjust the speed of travel in and by the drive mechanism. Also shown is a speed reducer mechanism used in conjunction with the film advance apparatus.
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