Patent GB-191418657-A (GB)
Title: Improvements in Apparatus for Signalling, Displaying Advertisements, or Communicating Messages by Day or Night.
IPC: G09F21/10
Filed: 1914-08-13
Granted: 1915-11-15
Abstract: 18,657. Naylor, J. P., and Naylorgraph, Ltd. Aug. 13. Monogrammic signals and signs; indicator or visible signals.-In advertising or signalling devices having a number of elements arranged on a suitable background, any desired letter or sign within the scope of the apparatus being exhibited by selecting the requisite elements and moving them to the display position in a direction substantially parallel to the background, a controlling-device is provided adapted to select and then display the requisite elements. In one form, each element comprises a disk adapted to be drawn out of a pocket, for display, by tension on a cord, the element being returned to the pocket by a spring. Contacts may be carried by the disk and background serving to complete, when in the display position, the circuit through a lamp, which may be carried by the element. In another form, each display element comprises two series of sectors, one set 13 being carried by supports 30 fixed to a background 10 and remaining stationary, the other set 11 being secured at their outer edges to a member 32 which may be rotated by pulling a cord 22. Normally, the member 32 is retained by a spring 23 so that the sectors 11 are hidden behind the sectors 13, but partial rotation of the member 32 causes the sectors 11 to pass between and be exhibited in front of the sectors 13 giving the general appearance of a complete disk. The two sets of sectors are differently coloured, and a lamp 17 may be provided, the circuit being completed in the display position by contacts 43, 44. The controlling-device comprises hook members 51, each corresponding to one of the elements, and secured to its operating-cord, and a corresponding number of disks 52 having projections 55. The disks are fixed to a spindle which may be rotated in bearings 61, and may, together with the bearings, be moved towards and away from the hook members by a link 59 and handle (not shown). The bearings carry a pointer 58, and the drum spindle carries an indicator 57. The projections 55 are so disposed that, in one position of the disks, the bearings can slide until the hook members pass between the projections, and the projections register with notches 56 in the hook members. Rotation of the disks to any other position then causes the projections to engage the members 51 corresponding to the elements that must be operated to display the letter or sign to which, in that position, the pointer 58 is pointing. Sliding the bearings in the opposite direction causes the engaged members 51, with their cords, to display the corresponding elements. The apparatus is particularly applicable to signalling from and to aircraft, and may be adapted to Morse-code signalling. To allow signals to be given which may be read either way round, two independently operable controllers are provided, one showing the letters with their bases in one direction, the other with their bases in the opposite direction. To facilitate transport, the apparatus may be made in sections, and in some cases may be of light material such as canvas. Specification 18,286/10 is referred to.