Acoustical cabinet for office business machines

Claim 1

AN ACOUSTICAL CABINET FOR REDUCING NOISE, AND ESPECIALLY THE CLATTER TYPE OF NOISE PRODUCED BY THE OPERATION OF AN OFFICE BUSINESS MACHINE HAVING A PLATEN STRIKABLE BY MANIPULATING ELEMENTS SUCH AS KEYS, SAID CABINET COMPRISING A SOUND ABSORBING SHELL ARRANGED TO ENCLOSE THE MACHINE AND HAVING AN OPENING ARRANGED TO PERMIT ACCESS TO AND NORMAL OPERATION OF THE MACHINE, AND A TRANSPARENT SOUND REFLECTING VISOR PIVOTALLY MOUNTED ON SAID SHELL FOR ROTATION FROM A LOWER OPERATIVE POSITION CLOSING A PORTION OF SAID OPENING TO AN UPPER INOPERATIVE POSITION EXPOSING SAID PORTION OF SAID OPENING, SAID VISOR WHEN IN SAID OPERATIVE POSITION BEING ARRANGED TO COVER THE PLATEN WHILE PERMITTING MANIPULATION OF THE ELEMENTS AND WHEN IN SAID INOPERATIVE POSITION BEING ARRANGED TO PERMIT ACCESS TO THE PLATEN, THE AXIS OF SUCH PIVOTAL MOUNTING BEING INTERMEDIATE THE VERTICAL EXTENT OF SAID VISOR WHEN IN SAID OPERATIVE POSITION.