GB305154A - Improvements relating to clocks, watches and other time-pieces - Google Patents

Abstract

305,154. Morris, J. Nov. 1, 1927. Dials; illuminating, means for.-In a time-piece in which the hands are luminous or the dial is illuminated, the time is also shown by the help of coloured sectors of glass or celluloid between the hands and the dial. Between the self-luminous hour hand a, Fig. 1, and the transparent dial c is a stationary disc b divided into twelve coloured sectors 1-12. In a modification, there is a masking disc rigid with the hour hand and between the hour hand and the coloured disc this masking disc having an aperture adjacent the end of the hand. In a further modification, Fig. 3, the dial f is illuminated by a lamp x at the rear, which lamp also lights up the coloured disc, the latter being of smaller diameter than the dial so that the ends of the hands show against the dial f. Moving with the hour hand g and having a hole p is a masking disc situated between the hand and the coloured disc. In a further modification, Fig. 4, a disc rigid with the hour hand q has one half s<1> of one colour and the other half s<2> of another colour, so that as the disc moves behind a masking semi-disc the proportion of the two colours shown is an indication of the position of the hour hand. Still further modifications are stated in which (1) the axes of the coloured and masking discs are separate from, but geared to the hour hand spindle, (2) four colours are shown in the same succession each hour, and (3) the colour may be changed rapidly at the end of each period.