Patent GB-191324736-A (GB)
Title: Improvements in or relating to Advertising and Displaying Apparatus.
Inventor: SIMPSON JOHN
Filed: 1913-10-30
Granted: 1915-08-05
Abstract: 24,736. Simpsom, J. Oct. 30. Rotary cylinder and like apparatus; rotary hinged leaves; plates, travelling.-A station or like indicator comprises a number of units in which a letter wheel or series of letters or cards bearing letters of known form are controlled so that each unit is caused to display a .predetermined letter at each operation. The indicator may be combined with an advertising apparatus, wherein each change of indication is accompanied by the changing of the advertisements. Each unit of the indicator is connected by ratchet and bevel gearing to a shaft 14, Fig. 3, and its own special rack. A motor-driven shaft 30 brings a cam 31 against a lever 32, and thereby returns any rack 16 which may have left the position shown in Fig. 1, and winds up the corresponding spring 19. Upon further rotation of the cam 31 so as to release the lever 32 and racks 16, the springs 19 relax and move the racks until the ends 26 of arms. 25, projecting from the several racks, have reached the ends of the respective slots in a jacquard card on the grid-like bottom 27 of a half-case 24. The lengths of the slots determine the display to be produced. The case 24, containing the jacquard cards, has one half provided with a grid-like bottom, and the other half with a partial bottom in the form of rails. In order to place the desired jacquard card in position on the grid before the springs 19 are free to operate, a cam 73, Fig. 1, upon the shaft 30 actuates a lever 60 against the action of a spring, and causes projecting pieces 65, Fig. 6, upon it to fall along slots in the sides of the cam and get beneath the previously used and lowest jacquard. The reaction of the liberated spring-urged lever 60 then raises the card on to lugs, which project into the case. Thereupon, a cam 71 strikes a projection 72 on a plate and pulls wires 49 wound about a pulley 48 secured to pulleys 41. Plates 38 are thereby drawn in opposite. directions across the top and bottom of the case, and push a new bottom card on to the grid-like floor, and a top card over to the half having the partial floor. The shaft 30, Figs. 10 and 12, is controlled to make one revolution at each operation. To effect this, the shaft 30 and the bosses of its free motordriven worm-wheel 75 and its-fixed pinion 74 are bored as shown to. receive a cylindrical piece 79, which continues into the boss 75, but is cut off longitudinally. The piece 78 emerges into a head 77 with a nose which projects, over a block on the shaft 30. Rigidly secured to the shaft 30 is a sleeve 80, which is connected by a tensioned spring 85 to a conducting-disk 83, free to rotate on the boss, but for a pair of stops on itself and the boss, and provided with an insulating-inset 84. A lever 90, pivoted at a point 88 upon an. arm 89, carries a projection 91, which engages a projection 87 on the disk 83 and locks it, while another projection upon it holds the head 77 up and keeps the wheel 75 free against the influence of a spring 97. When a magnet 94 produces a temporary pull upon the lever 90, the disk 83, Fig. 12, is liberated and rotates clockwise, thereby moving the insulating-piece 84 until the stops 86 come together, and starting up the motor. At the same time, the liberated piece 77, 78, 79 rotated by the spring 97, locks the worm-wheel 75, and enables the motor to drive the shaft 30 until the inset 84 breaks the motor circuit. The stops 87, 91 lock, but the shaft 30 rotates, owing to the momentum of the motor armature, until the head 77 meets its stop on the lever 90, and the wheel 75 is freed again. The magnet 94 may be energized by any form of live contact over or upon the.track. For an overhead trolly wire 106, a trolly-wheel 99, 100, Fig. 17, carries a deep groove 101 containing a ring 103 of the same diameter as the smaller periphery of the wheel, and pressed against the side of it by flat springs 104. A projection 107 on the wire forces the ring against a contact on the trolly pole, and thereby sends a current to the magnet 94. A compartment 113, Fig. 3, contains two adjacent batches of cards 114, which are circulated forward through one pack and across and backward through the adjacent pack. The pinion 74, Figs. 1 and 3, is geared up to a sprocket-wheel 119, bearing a chain carrying with it a projection 128, which is slidable upon a vertical bar 130 connected to sliders. These sliders are connected together by chains and oscillate together. A spring-controlled piece on each engages an opening in a card 114 in each pack, and a roller makes way for it to move the card across to the other pack. Oscillating chains with rollers are also provided in the upper part of the casing 113.