Mobile visual signalling device

A mobile visual signalling device comprising a first display apparatus, a second display apparatus, each of said display apparatuses comprising a housing, a pair of reels journaled within said housing, a strip film, the ends of said strip film secured to said pair of reels, said strip film having a first indicia site and a second indicia site disposed adjacent one another, a light source, said light source being disposed within said housing, a viewing screen, said viewing screen disposed secured to said housing located adjacent said first indicia site, a photo-electric sensing device, said photo-electric sensitive device disposed adjacent said second indicia site and adjacent said viewing screen, said first indicia site carrying display indicia thereon having light transmission characteristics different from the remaining portions of said first indicia site, said second indicia site having an elongated indicia thereon possessing different light transmission characteristics than the remaining portions of said second indicia site, a motor, said motor rotationally coupled to one of said pair of reels, bias means for biasing the other of said pair of reels in a selected rotational direction, said bias means including a spring, one end of said spring fixedly secured to said housing, the other end of said spring fixedly secured to said other of said pair of reels, means to manually selectively energize said motor in an energized state wherein said motor may rotate in one of two directions, means to de-energize said motor upon said second indicia being aligned between said light source and said photoelectric device, an amplifier, said amplifier electrically coupled to said photo-electric device, said amplifier electrically connected to said motor, said means to de-energize said motor including a first relay and a second relay, a counter, said counter electrically coupled between said second relay and said amplifier, each of said first relay and said second relay having a pair of normally closed contacts, said pair of normally closed contacts of said first relay and of said second relay electrically coupled to said motor whereby said photo-electric device provides an output signal responsive to light emanating from said light source and traversing said second indicia so as to selectively operate said first relay and said counter operating said second relay and stopping said motor from further rotation upon selectively a single appearance of said second indicia and multiple appearances of said second indicia adjacent the location of said photo-electric device, whereby said first display apparatus and said second display apparatus each have their respective motors de-energized independently of one another upon said second indicia of each of said apparatuses being individually aligned between said light source and said photo-electric device of each of said apparatuses.