I'o/iiihir Scirnrr Moiit/ili/ 



735 



A worm gear connects the shaft of the 

 handle of the projector-machine with 

 the steel pegs of the cue-machine 



WHE.E.L RLVOLVES 

 ONCt LVERY 15 T- 



REVOLUTiON or 



OPERATORS -','■■,->■ 

 HANJDLE iJ)LI 



sentimental. The necessary orchestral 

 accompaniment will be pianissimo. 

 This shading is expressed, according 

 to the index card, in column No. i. 

 By that time the control device on 

 the projector has moved the cylinder a 

 short distance, so that the pencil mark 

 will be slightly lower than the first one. 

 This operation is repeated until the film 

 has run its course. The cylinder has 

 made one complete revolution. 



In order that the record of musical shadings 

 marked in pencil dots on the pajier record may 

 be indicated by the Hashing of cues in their 

 proper order, the pencil dots must be duplicated 

 on the left hand side of the cylinder by means 

 of steel pegs fitted into the lines of holes. There 

 are fifteen of these lines of holes correspontling 

 with the fifteen columns on the paper record. 



The first scene, we remember, called for 

 music at fortissimo, and it was indicated by a 

 pencil mark in column No. 2. Accordingly, a 

 metal peg is inserted, parallel with the mark, in 

 the second line of holes. When all of the pegs, 

 corresponding with* the pencil marks, ha\"c been 

 inserted, and the cylinder is again revoked, the 

 cue signals in the reel glass box flash in their prop- 

 er order. The signals are caused to flash by the 

 metal pegs which press small springs upward, 

 causing electric connections to be made, cleli\er- 

 ing current to the corresponding signal lights. 



As the film is reeled through 

 the projection-machine an 

 electrical contact is made 

 with the cue-machine at every 

 fifteenth revolution. The 

 moving steel pegs push up 

 contact springs and the prop- 

 er signal is flashed to the 

 orchestra. Wh-?n all the reels 

 have be?n shown, the cylinder 

 in the orchestra pit will have 

 made one complete revolution 



