GB148840A - Improvements in signs - Google Patents

Abstract

148,840. Carpquist Signs, Ltd., (Assignees of Carpenter, R. G.). Jan. 10, 1917, [Convention date]. Moving and changing apparatus; reel and web apparatus.-An iiluminated sign of the travelling legend type comprises a front 37 having uniformly sized and spaced translucent portions, an opaque film 1 bearing legends formed by perforations smaller in size and more closely spaced than the translucent portions of the sign front 37, and lighting means 39 arranged so that the light projected through each of said perforations also passes through two adjacent translucent portions These portions may be openings, and may be covered by glass bulbs 40 which simulate electric incandescent lamps. Preferably a lightdiffusing device 38, such as a ground glass screen, is interposed between the film 1 and the lighting means 39. The film 1 is mounted on two spools 2, 3 adapted to be driven in opposite directions by gears operated by a shaft 4. The Specification as open to inspection under Sect. 91 (3) (a) comprises also two forms of reversing mechanism for the spools 2, 3 on which the film is wound. In the form shown in Fig. 3 (Cancelled), a motor 8 is brought into gear with one or the other of spools 2, 3 by an adjustable rod 14 carrying at its ends rollers 15 which bear against the wrapped-up film 1. The rod 14 is thus gradually moved laterally by the increasing thickness of film on one spool, carrying with it a slide 18 which is fitted with a spring-pressed wheel 22 which rides up an incline on a wedge 12 and then snaps past and causes the slide 18 to strike a stop 19 on the clutch shaft 4. In the form shown in Fig. 1, a projection at each end of the film engages one or the other of levers 28 connected by a link 29 which rocks an arm 30 carrying a wedge 31 which engages a companion wedge 32 on a flat spring 33. The arm 30 is thus snapped from one side to the other of the wedge 32, and by engaging a stop 34 on the shaft 4 de-clutches the motor 8 from one spool and connects it with the other. A link 35 connected to the arm 30 actuates a lighting switch 36. The projection at each end of the film is formed as part of means which may be employed for connecting the film to the spool, consisting of a metal strap 23 punched to form a bridge-piece 22 and an aperture through which are looped the film 1 and a piece of leather 25 secured to the spool. This subject-matter does not appear in the Specification as accepted.