Phonograph apparatus

Claim 1

IN A PHONOGRAPH APPARATUS, A FRAME, A PHONOGRAPH RECORD REVOLVABLY MOUNTED ON THE FRAME, A GEAR TRAIN ARRANGED TO TURN SAID RECORD; SAID GEAR TRAIN INCLUDING A DRIVE SHAFT ASSOCIATED WITH A SPIRAL SPRING WHICH IS ADPATED TO BE WOUND UP AND WHEN UNWINDING, WILL DRIVE SAID SHAFT, A PICK-UP ARM COMPRISING A SPRINGY STRIP ELEMENT SWINGABLY MOUNTED AT ONE OF ITS ENDS ON THE FRAME, FOR MOVEMENT ACROSS THE RECORD AND A MEANS INCLUDING A STYLUS ASSOCIATED WITH A DIAPHRAGM AT THE OTHER END OF SAID STRIP ELEMENT, ADAPTED WHEN THE RECORD IS TURNING AND SAID STYLUS IS IN CONTACT WITH A SOUND GROOVE ON THE RECORD, TO TRANSLATE VIBRATIONS OF THE STYLUS INTO SOUND; SAID STRIP ELEMENT BEING BIASED SO THAT THE SAID STYLUS NORMALLY CONTACTS THE RECORD, A WHEEL TURNING WITH SAID GEAR TRAIN, HAVING A PREDETERMINED NUMBER OF LUGS EXTENDING THEREFROM AND A DOG ELEMENT MOVABLY MOUNTED ON THE FRAME, POSITIONED IN THE PATH OF LUG MOVEMENT AND SHIFTABLE AWAY FROM SUCH PATH, WHEREBY ON INTERCEPTION OF A LUG, ROTATION OF SAID DRIVE SHAFT IS STOPPED AND WHEN SAID DOG ELEMENT IS SHIFTED OUT OF CONTACT WITH THE LUG IT HAS LAST INTERCEPTED, SAID SHAFT IS AGAIN FREE TO BE ROTATED BY ACTION OF SAID SPRING; SAID WHEEL BEING STOPPED BY SAID DOG ELEMENT COMING INTO CONTACT WITH A LUG, WHEN THE STYLUS IS POSITIONED AT PREDETERMINED DIFFERENT DISTANCES FROM THE END OF THE RECORD RESPECTIVELY; THE UNWINDING OF SAID SPRING BEING SUFFICIENT TO TURN THE RECORD SO THAT THE STYLUS SHALL TRAVEL FROM THE BEGINNING TO THE END OF SAID RECORD.