Data sheet holding frame - has one-piece window edge with offset guide slots for sheets

摘要

The holding frame is for sheet-type data indicators, particularly in addressing machines. The machine includes an edge enclosing a window and with parallel slot-type guides holding the indicator. The frame edge is made in one piece, the slots being offset from and not in line with each other. The guide in one plane can extend right round the window without interruption, being joined by ribs to the frame edge. That in the other plane, set back from the window, can be formed by tongues alongside each other.