Portable viewer for micro-film

Claim 1

A MICRO-FILM VIEWER INCLUDING A SUBSTANTIALLY RECTANGULAR HOUSING; A SPOOL SUPPORT SHAFT, SAID SHAFT BEING DISPOSED TRANSVERSELY WITHIN SAID HOUSING AND SUBSTANTIALLY ADJACENT THE REAR WALL THEREOF; A FIRST SPOOL AND A SECOND SPOOL, SAID SPOOLS BEING FREELY AND CONCENTRICALLY MOUNTED UPON SAID SHAFT IN PARALLEL SPACED APART RELATIONSHIP; A FIRST AND A SECOND GEAR WHEEL, SAID GEAR WHEELS BEING FREELY AND CONCENTRICALLY MOUNTED ON SAID SHAFT IN SPACED APART RELATIONSHIP AND INTERNALLY OF SAID SPOOLS; PULLEY MEANS FOR THE GUIDING OF A LENGTH OF MICRO-FILM FROM SAID FIRST TO SAID SECOND SPOOL, SAID PULLEY MEANS BEING LOCATED IN PARALLEL SPACED APART RELATIONSHIP WITHIN SAID HOUSING, SAID FILM BEING DISPOSED HORIZONTALLY THEREBETWEEN SO THAT ITS FRAMES ARE VERTICALLY INCLINED; LENS MEANS LOCATED IN THE REAR WALL OF SAID HOUSING; A TRANSLUCENT RECTANGLE OF MATERIAL, SAID RECTANGLE BEING LOCATED CENTRALLY WITHIN THE FRONT WALL OF SAID HOUSING; SAID LENS AND SAID TRANSLUCENT RECTANGLE BEING IN AXIAL ALIGNMENT AND SAID HORIZONTALLY DISPOSED PORTION OF SAID FILM PASSING THEREBETWEEN IN SUCH A RELATIONSHIP THERETO AS TO LOCATE THE CENTRE OF EACH INDIVIDUAL FRAME IN AXIAL ALIGNMENT THEREWITH; AUTOMATICALLY OPERATED DRIVE MEANS FOR SAID SPOOLS, SAID DRIVE MEANS INCLUDING A CONVOLUTE SPRING AND TWIST KEY THEREFOR; SLIPPING CLUTCH MEANS RELEVANT TO EACH OF SAID SPOOLS; SELECTIVE REVERSAL MEANS FOR SAID DRIVE MEANS; AND MEANS FOR THE MANUAL OPERATION OF SAID MICROFILM VIEWER.