Patent GB-668851-A (GB)
Title: Improvements relating to indicating devices for displaying variable information
IPC: G09F11/30
Filed: 1949-03-12
Abstract: 668,851. Indicating apparatus. NASH, W. J. Feb. 7, 1950. [March. 12, 1949; March 29, 1949] Nos. 6828/49 and 8450/49. Class 118 (i). [Also in Groups XV, XVIII and XIX] An indicating device for displaying information of the kind comprising a rotatable box divided into two compartments each with a window and containing a number of cards so arranged that each time the box is turned half a revolution one card passes from the lower to the upper compartment to expose different card at a window is characterised in that the box is formed in two parts assembled and held together and each having a window, the box having an interior transverse partition forming the two compartments, spaced .from the front and back walls and consisting of a separate strip whose ends are inserted before assembly in slots in opposite walls of one or each part of the box. A date indicator comprises two sets of tablets 7, Fig. 4, with dates on both faces arranged in upper and lower compartments of a casing 1. separated by a partition 4 spaced from front and back walls by gaps 5. Each compartment has a window 6 and the casing is mounted by trunnions 2, Fig. 3, in bearings in uprights 3 of a stand, which may be formed of moulded plastic, friction means being provided to give a stiff movement. Pockets 13 may be provided to receive month tablets 14. The casing 1 is moulded or cast in plastics or other material in two identical parts, Fig. 6, formed with halfbosses 8 and slots 9 to accommodate a partition 4 formed with trunnions 2, the parts being held together by circlips 10 fitted round the halfbosses 8. When the casing is turned through 180 degrees a card slides from one compartment to the other to change the date displayed. In lieu of dates the tablets may bear any desired information, the device being modified according to its purpose. As an educational device for teaching spelling a number of casings 1 each containing sets of tablets bearing letters may be mounted adjacent one another to enable words to be formed. As a toy a set of tablets bearing pictures are contained in a casing whose partition is formed without trunnions and whose bosses are closed and are formed with small projections or recesses to form pivots when held between finger and thumb. As an advertising device the device may form a revolving sign. The device may be adapted to form a, "points" score-board or event or results indicator in various games, sports or competitions, or as a "trumps" indicator in card games. The construction of the casing may be modified in many ways. Correct location and registration of the two halves of the casing may be obtained by small projections on the edge face of one half engaging recesses in the opposed edge face of the other half. Instead of a circlip round the boss halves any interlocking arrangement may be employed between the two halves e.g. a spigot projecting from one half may engage a recess in the opposed edge of the other half. Instead of being formed in two symmetrical parts the casing may comprise an open-fronted body part 25, Fig. 13, closed by a plate 26 secured by projections 23 on tongues 21 snapping into recesses 24 in the body 25, the partition 4 being inserted in slots in opposite side walls of the body 25 while the plate 26 could carry lugs at opposite sides that enter these slots to maintain the partition 4 in place. Specification 241,137, [Class 106 (iv)], is referred to.