| 摘要 |
1,140,393. Camera spools. PENTACON DRESDEN KAMERA-UND KINOWERKE VEB. Feb.7, 1966, No. 5183/66. Headings G2A and G2E. In a photographic camera having a film feed sprocket (3) Fig. 1 (not shown) on the take up spool side of the exposure gate (6) which sprocket rotates in the opposite direction to the take up spool, the spool is provided with at least one U-shaped stirrup (11) guided in slots 10 extending radially of the spool core (2), the legs 11a of the or each stirrup being pivotably mounted on the two spool flanges 8, (9) laterally of the slots in the direction of rotation of the core. To thread a film leader strip, an element 5 is hinged away from the sprocket and the perforated film is placed in contact with the sprocket, the element 5 being hinged back to hold the film in place, with its end lying adjacent the core Fig. 3 (not shown). The spool is rotated causing one of the stirrups to strike the film Fig. 4 (not shown) forming a loop (7a) which is tightened by further rotation of the spool, which rotation also causes the associated stirrup to move inwards to clamp the film end against a flattened portion of the spool core Fig. 5 (not shown). In a camera in which the take up spool and the film feed sprocket rotate in the same direction Fig. 6 (not shown) the element (15) is provided with a guide face (16) to guide the film end into contact with the spool core.
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