| 摘要 |
Transporting mechanism for film in motion picture projectors wherein the in-out cam is replaced with an electromagnet which is energized and deenergized in synchronism with the operation of that one of two transporting cams which move the shuttle lengthwise of the film, whereby the armature of the electromagnet causes the claw of the shuttle to enter into or to move out of the adjacent perforation. One of the transporting cams is operative when the film is transported forwardly, and the other cam moves the shuttle when the film is to move rearwardly.
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