GB646039A - Improvements relating to apparatus for displaying variable information - Google Patents

Abstract

646,039. Indicators for variable information. GUICHARD, R. A. E. Sept. 29, 1947, Nos. 26320/47, 17360/48 and 20358/48. [Class 118 (i)] In apparatus for indicating variable information, comprising a frame on which overlapping strips of plastic, cardboard or the like are moved longitudinally, means is provided to prevent accidental longitudinal displacement of the strips. In the embodiment of Fig. 1, in which overlapping strips 15 are moved along channel members 13 mounted on a frame 1 below reference indicator strips 10 and 11, the channel members 13 have slots 14 to engage with strips 15 by their ends 16 which are bent at right angles to their length. These details are shown more clearly in Figs. 5 and 6. Many modifications of this arrangement are described and the strips may be provided with tongues, pins, or hooks at their ends to engage with complementary means on the channel members. The channels need not be formed in continuous members but may consist of a series of shorter elements, or, instead of separate channel members, the channels may be bent out of a sheet-metal panel. The strips may move over pegs instead of in channels, as in the embodiment of Figs. 46 and 47 (not shown). The strips are contrastingly coloured and may be of different widths so that a narrow strip can be used in front of a wider strip as in Fig. 17 (not shown). The strips may carry written matter, for example by fitting a printed sheath over the strip as in Fig. 60 (not shown). Channels may be formed on both sides of a panel or frame which may then be mounted to turn as a whole about a vertical axis. Specification 646,055 is referred to.