Patent GB-191302134-A (GB)
Title: Improvements in Mechanisms for Displaying, Indexing and Controlling Travelling Bands for Advertisements and the like.
Inventor: ELLIS RIDSDALE
IPC: G09F11/29
Filed: 1913-01-27
Granted: 1913-12-18
Abstract: 2134. Ellis, R., [Wright, A. H.]. Jan. 27. Reel and web apparatus.-Several forms of advertising apparatus are described, in which a band-roller controls mechanism for reversing the direction of travel of the advertising webs and the movement of shutters or blinds, which are adapted to conceal the webs. (1) The rotary handle 113, Fig. 1, rotates a slotted sleeve 110 by a feather and slot, and an inclined slot in the sleeve engages a pin on a shaft 83 so that the sleeve travels forward before rotating the shaft 83 and incidentally pushes the lever 117, raises the pawl 131 from its locking-engagement with the ratchet-wheel 130, oscillates the lever 120 about its pivot 121, and extends the lazytongs levers 122 and opens the shutters. When the handle is freed, the spring 133 whirls it round and the sleeve 110 moves back towards the handle, liberating the bell-crank lever 117 and enabling the spring 132 to contract the lazytongs and close the shutters. When the band is sufficiently wound from one roller to the other, an arm 107, geared to one of the rollers 87, 92. strikes a lever 104, throws over an arm 99 and a pair of projections 98 which operate levers 94, 95, thereby changing the engagement of the half-clutch 93 from one of the half-clutches 88, 89 to the other and reversing the direction of travel of the web. (2) Intermittent change of advertisement with closing of shutters is effected from a shaft 133, Fig. 4, which drives a shaft 83 through a clutch 135 and thereby drives a double clutch 80, adapted to operate one or other half-clutch 88, 93 according to the movement of the levers 94, 95. An axle 140 of one of the web-drums drives a slotted disk 137, and when a slot confronts a roller 145 on a lever 142, a compression-spring 155 moves the lever about its pivot 143 and disengages the clutch 135 and stops the web; at the same time, the heel-piece 147 moves the lever 157 and frees the lever 158, Fig. 5, so that it moves under the action of a spring 164 and opens the shutters. The continuously rotated cam 150 then moves the lever 142 back again, and a roller 166 on the disk 165 shortly afterwards returns the lever 158 to its old position and closes the shutters. (3) A spring-roller blind 203, Fig. 8, may replace the shutters. The spindle of the handle 202, Fig. 6, bears a double clutch 176, 177, adapted to engage the half-clutch 178 of the roller 170 or the halfclutch 176, which drives the roller 180 through a crossed band. A web-roller operates through gearing 171, 172 so as to drive a screw 173 which carries a traveller 190. A diagonally grooved piece with indicator 193 is adapted to move along a pivoted square-sectioned rod 184, which is thrown about an horizontal axial pivot when a projection on the traveller 190 enters its groove, and reverses the clutch-drive 176, 177 by way of the lever 199. The shaft 184 also causes a lever 221, Fig. 8, to strike a projection 222 and rotate a rod 223 so as to disengage an arm 225 from a ratchet 227, thereby liberating a spring-roller 211 and permitting it to wind up the blind 203. The cord 210 carries a cylinder 215 through a cylinder 218 past a trigger 219, which prevents its return, until it strikes an arm 216 which throws the clutch between the operating-handle 202 and drum 170 out of gear. A friction-drive between the handle 202 and lever 209 holds the niston 228 just free of the outlet 234, and when the handle 202 is liberated, the spring 236 pulls the piston in, withdraws the trigger 219, and liberates the cylinder 215 to enable the blind to be wound up again by the handle 202. (4) In an electrical apparatus, a selector-wheel 240, Fig. 13, is moved along a slotted bar 243, and, when it is rotated into engagement with a slot in the bar, it cants a rod 249 and causes a lever 251 to close a switch 255, which starts up the motor 258 and drives the web-roller 170. The screw 173, operated by a web-roller 170, drives a journal 190 and its roller 192 to a slotted boss, and cants it and its square supporting-rod 184 with attached levers, which are arranged to be moved so as to allow the switch 266 to break contact 257 and stop the motor 258. The levers on the rod 184 close a switch 270, start a motor 272 and thereby effect the drive of a loose pulley 273. Spring-controlled weighted levers 277 are thrown centrifugally into engagement with a ratchet-wheel 279 fixed upon the shaft of a spring-blind roller 275 and wind up the blind. A pinion 282 operated from the roller 275 drives a wheel 284 through a spring-controlled ratchet and raises the air dash-pot plunger 287, so that when the blind has been completely rolled up, a pin 290 raises the rod 269, opens the switch 270 and stops the motor 272 and roller 275. The plunger 287 falls slowly and a stop 292 moves an arm 295 from the roller 275 and permits the weighted blind to unroll. Reversal of the display-band is effected by a double switch on the square rod 184 energizing and de-energizing a solenoid 298 so as to shift the bevels 296, 260 and drive one or other webroller.