| 摘要 |
<p>1504357 Cutting apparatus HOECHST AG 19 Nov 1975 [20 Nov 1974] 47619/75 Headings B4B and B5A A device for cutting an article, e.g. a photographic film member 29, comprises a frame 12 having first and second spaced-apart support means 14, 16 for the article, the distance between the supports being adjustable, an electrically heatable cutting blade 38 adapted to be reciprocated by drive means 33, 60 and means 54, 56, 66 to control the reciprocal movement and the electrical heating of the cutting means. The cutting blade 38 is mounted on a carriage 44 which is movable on rails 34, 36 by means of an electric motor 60 and a cable-and-pulley drive 33. The blade is provided with two cutting edges such that it can cut on its forward and backward strokes as controlled by limit switches (54, 55), Fig. 3a (not shown). The blade is connected to a transformer 58 for supplying heating current thereto. The material is located by a bar 20 which is laterally adjustable via slots 40 in the support 14. The support 16 is adjustable to vary the distance between the two supports in order to allow for various widths of waste cut-off portions to fall between the supports to a collection point. Circuitry is described for automatically controlling the rotation of the motor 60 and heating of the blade; a foot operated switch 62 is included. A pipe 30, 31 is provided for sucking away fumes during cutting. In a modification, the blade may be replaced by a hot wire.</p> |
