138,880. Tully, R. W. Feb. 6, 1918, [Convention date]. Theatrical appliances.-Consists of a stage setting for allowing one actor to take the place of another without the change being noticed by the audience. Fig. 1 shows a plan of the setting. A hollow structure 6 - - 9 representing a wall with a passage 12 is placed transversely to the rear set piece 5 to which is fitted a lateral set piece 15. The part 9 of the structure is open at the back and is fitted with doors 10 in front whilst the part 6 is closed in front 7. An actor on the stage leaves by the door 14 and passes behind the setpieces as shown by arrows in full lines. A second actor at the same time enters and takes the course indicated by dotted arrows. The first actor having changed his costume to that of the second enters the part 9 from behind and passes through the doors 10 just as the second actor enters the opening 12, whence he turns into the blind passage in the part 6. The first actor passes on to the stage to the right, giving the impression to the audience that the second actor has passed through the opening 12.
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