GB1391118A - Recording apparatus - Google Patents

Abstract

1391118 Recording-apparatus GITAC 7 June 1972 [7 June 1971] 26496/72 Heading G1J Recording-apparatus 1 for writing legends on front and rear discs (or stacks of discs), partially or wholly superimposed, comprises a main recording device 37 driving an associated intermediate recording device 44 wherein the main device has writing means for recording on the rear disc, the intermediate device has means for driving the front disc and legends written on both discs are visible. A viewing window 7 in a fixed front part 2 of the apparatus 1 allows continuous observation of the progress of recording and in embodiments Figs. 2 and 4 (not shown) with wholly superimposed discs, observation of the rear disc is made possible by optical means e.g. prisms or mirrors, one part at least being fastened to a plate 48. The rear disc support 37, free on a fixed shaft 43, is geared to a time controlled electric motor and is secured by a bay onette joint 45, 46, 47 to the casing 44 rotatable on a shaft 49 (fixed by splines or square sections to shaft 43) and covered by the plate 48. An assembly 54, centering and rotationally positioning the front disc, is supported by a pinion 53 engaging a pinion 52 (both rotatably carried by the plate 48), the pinion 51 secured to the casing 44, whereby the front and rear discs are driven in synchronism. A disc, Fig. 6, for use in recording-apparatus on a vehicle has a peripheral zone 67 in which to register graphically a driver's working time, a zone 68 for instantaneous speed recording and an inner zone 69 for distance run. A speed recording member would be arranged to move radially outwards to record increasing speed on this disc, but if greater precision were needed at low speeds a recording member moving radially inward with increasing speed would be arranged to record over a suitably graduated scale in the zone 68. The fixed casing part 2 has an extension 39 serving to position the apparatus on a mounting panel and to prevent rotation with respect thereto. Indication from measuring mechanism, in the rear part of the apparatus I are transmitted to indicating and recording members at the front by shafts extending outside the peripheries of the discs but may be temporarily displaced to facilitate the positioning of the discs.