Method and apparatus for composing music copy

Claim 1

AN APPARATUS FOR COMPOSING MUSIC COPY COMPRISING A STATIONARY FRAME, A SHEET OF LIGHT SENSITIVE MATERIAL, A TABLE MOUNTED UPON SAID FRAME FOR SUPPORTING SAID SHEET OF LIGHT SENSITIVE MATERIAL, A SYMBOL MAGAZINE INCORPORATING LIGHT-PASSING IMAGES OF A VARIETY OF MUSICAL SYMBOLS, A SOURCE OF LIGHT MOUNTED UPON SAID FRAME FOR DIRECTING LIGHT UPON SAID PLATEN, AN EXPOSURE STATION POSITIONED IN FRONT OF SAID SOURCE OF LIGHT, SYMBOL IMAGE FEEDING MEANS CONNECTED TO SAID MAGAZINE FOR SELECTING A PREDETERMINED SYMBOL IMAGE AND DISPOSING IT AT SAID EXPOSURE STATION BETWEEN SAID LIGHT SOURCE AND SAID LIGHT SENSITIVE MATERIAL, TRANSLATING MEANS REACTING BETWEEN SAID EXPOSURE STATION AND SAID TABLE THROUGH SAID FRAME FOR VARYING THE VERTICAL AND LATERAL ORIENTATION OF SAID EXPOSURE STATION RELATIVE TO A MUSICAL STAFF IMPRINTED UPON SAID SHEET DISPOSED UPON SAID TABLE, PART OF SAID TABLE EXTENDING VISIBLY OUTSIDE OF SAID APPARATUS TO PROVIDE A REFERENCE SURFACE, A REFERENCE ARM CONNECTED TO SAID EXPOSURE STATION AND EXTENDING OVER SAID REFERENCE SURFACE FOR PROVIDING A VISIBLE INDICATION OF THE RELATIVE POSITIONS OF SAID EXPOSURE STATION AND SAID LIGHT SENSITIVE MATERIAL, SAID REFERENCE SURFACE INCLUDING A GUIDE SURFACE FOR MARKING AN ACCURATE RECORD OF THE VERTICAL AND LATERIAL SPACINGS OF THE IMAGES OF NOTES PRINTED UPON SAID SHEET OF LIGHT SENSITIVE MATERIAL AT SAID EXPOSURE STATION AT A LOCATION REMOTE FROM THEM WHICH IS VISIBLE TO AN OPERATOR, SAID SYMBOL MAGAZINE COMPRISING A DISC HAVING SAID LIGHT-PASSING IMAGES DISPOSED ABOUT ITS PERIPHERY, SAID DISC BEING MOUNTED UPON A TURNTABLE, SAID TURNTABLE AND SAID EXPOSURE STATION BEING MOUNTED UPON A SUPPORTING PLATE, ROTATING MEANS MOUNTED UPON SAID SUPPORTING PLATE AND CONNECTED TO SAID TURNTABLE, ROTARY INDEXING MEANS MOUNTED UPON SAID SUPPORTING PLATE AND CONNECTED TO SAID TURNTABLE FOR ACCURATELY POSITIONING SAID PREDETERMINED SYMBOL IMAGES AT SAID PRINTING STATION, SAID ROTATING MEANS COMPRISING A MOTOR, SAID MOTOR BEING CONNECTED TO SAID TURNTABLE THROUGH A SLIP-CLUTCH, SAID ROTARY INDEXING MEANS INCORPORATING POWER-OPERATED KEYS DISPOSED ABOUT A PERIPHERY OF SAID TURNTABLE, A PROJECTION EXTENDING FROM SAID TURNTABLE INTO THE PATH OF MOTION OF SAID KEYS, ELECTRICAL CONTROL MEANS ASSOCIATED WITH SAID SLIP-CLUTCH AND SAID POWER-OPERATED KEYS FOR ENERGIZING SAID CLIP-CLUTCH TO CAUSE ROTATION OF SAID TURNTABLE AND MOTION OF ONE OF SAID KEYS INTO THE PATH OF ROTATION OF SAID PROJECTION TO CAUSE SAID TURNTABLE TO BE ARRESTED WHEN SAID PRE-SELECTED SYMBOL IMAGE IS DISPOSED AT SAID EXPOSURE STATION, SAID POWER-OPERATED KEYS COMPRISING AN ARRAY OF SOLENOID-OPERATED KEYS DISPOSED IN SLIDES ABOUT THE PERIPHERY OF SAID TURNTABLE, AND SAID KEYS INCLUDING INDENTATIONS WHICH PERMIT THE THROUGH PASSAGE OF SAID PROJECTION WHEN THEY ARE NOT ACTUATED.