Slide device for study of sequential data

Claim 1

A STUDY MACHINE, INCLUDING: AN ENVELOPE OPEN AT LEAST AT ONE END THEREOF, AND COMPRISING A FRONT PANEL AND A BACK PANEL CONNECTED ALONG THEIR LATERAL EDGES; A CHART SLIDABLY RECIEVED WITHIN SAID ENVELOPE AND MOVABLE THROUGH SAID OPEN END, SAID CHART HAVING THEREON A PLURALITY OF PARALLEL, SUBSTANTIALLY IDENTICAL IN WIDTH COLUMNS EXTENDING PERPENDICULAR TO SAID LATERAL EDGES AND SCALED ALONG THE LENGTH THEREOF, EACH OF SAID COLUMNS CONTAINING DATA RELATING TO THE SUBJECT MATTER TO BE STUDIED, THE DATA IN EACH COLUMN BEING ARRANGED IN SEQUENTIAL ARRAY RELATIVE TO THE SCALED LENGTH OF SAID COLUMN TO PRESENT A PORTION OF THE DATA RECORD OF SAID SUBJECT MATTER AND THE DATA ARRAY IN SUCCESSIVE COLUMNS PRESENTING SUCCESSIVE PORTIONS OF THE DATA RECORD OF SAID SUBJECT MATTER, WHEREBY THE COLUMNS OF DATA ON SAID CHART WHEN TAKEN TOGETHER PRESENT AN OVERALL DATA RECORD OF SAID SUBJECT MATTER, CERTAIN OF SAID COLUMNS ALSO CONTAINING CHARACTERS WHICH IDENTIFY ITEMS OF INFORMATION RELATIVE TO SAID SUBJECT MATTER AND PERTINENT TO THE DATA IMMEDIATELY ADJACENT SAID CHARACTERS, SAID FRONT PANEL HAVING AN OPENING THEREIN OF A LENGTH AT LEAST EQUAL TO THE LENGTH OF SAID COLUMNS AND OF A WIDTH AT LEAST AS GREAT AS THE WIDTH OF ONE OF SAID COLUMNS, SAID OPENING DEFINING A STRAIGHT EDGE EXTENDING PERPENDICULAR TO SAID LATERAL EDGES AND WHICH FACES FORWARDLY TOWARD SAID OPEN END, THE PORTION OF SAID FRONT PANEL REARWARDLY OF SAID PANEL STRAIGHT EDGE HAVING AN AREA AT LEAST AS GREAT AS THE TOTAL AREA OCCUPIED BY SAID COLUMNS ON SAID CHART, SAID CHART BEING INITIALLY RECEIVED WITHIN SAID ENVELOPE WITH SAID COLUMNS CONCEALED BEHIND SAID FRONT PANEL PORTION AND DURING OPERATION OF SAID MACHINE BEING TRANSLATED TOWARD SAID OPEN END ONE COLUMN AT A TIME; AN ELONGATED SLIDE DISPOSED BETWEEN SAID FRONT PANEL AND SAID CHART AND ARRANGED FOR TRANSLATIONAL MOVEMENT PARALLEL TO SAID COLUMNS, THE FORWARD SIDE OF SAID SLIDE PROJECTING INTO SAID OPENING FOR A DISTANCE AT LEAST EQUAL TO THE WIDTH OF ONE OF SAID COLUMNS AND HAVING A STRAIGHT EDGE THEREON WHICH EXTENDS PARALLEL WITH SAID PANEL STRAIGHT EDGE, THE FORWARD SIDE OF SAID SLIDE HAVING A NOTCH IN ITS STRAIGHT EDGE OF A WIDTH AT LEAST EQUAL TO THE WIDTH OF ONE OF SAID COLUMNS WHEREBY THE DATA AND CHARACTERS IN A COLUMN LYING BENEATH SAID SLIDE WILL BE PROGRESSIVELY DISCLOSED IN SEQUENCE WITHIN SAID NOTCH WHEN SAID SLIDE IS TRANSLATED ALONG THE LENGTH OF SAID COLUMN, SAID NOTCH BEING OF SUCH LENGTH THAT AT EACH POSITION THEREOF A PREDETERMINED AMOUNT OF SEQUENTIALLY ARRANGED DATA IN A COLUMN CAN BE EXPOSED THEREIN; A HANDLE ATTACHED TO SAID SLIDE, SAID FRONT PANEL HAVING A SLOT THEREIN SPACED FROM AND EXTENDING PARALLEL TO SAID PANEL STRAIGHT EDGE, SAID SLIDE EXTENDING REARWARDLY BEYOND SAID SLOT, AND SAID HANDLE PROJECTING THROUGH SAID SLOT AND HAVING FLANGE AND GROOVE MEANS THEREON ENGAGING SAID FRONT PANEL TO CONSTRAIN SAID SLIDE TO TRANSLATIONAL MOVEMENT ONLY IN A DIRECTION PARALLEL TO SAID PANEL STRAIGHT EDGE.