B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/100
B41J 25/18 (2006.01)
Patent
CA 1193993
REVERSE TAB CONTROL SYSTEM FOR TYPEWRITER Abstract: A typewriter has a Keyboard (12), including a Tab Set Key (22), a Tab Clear Key (24), and a Tab Actuating Key (26). Oper- ation of the tab set key stores stop positions of the Carrier (18) with respect to the typewriter's Platen (14). Shallow de- pression of the tab actuating key causes the carrier to move for- ward (right) to the next tab stop position. A first deep de- pression of the tab actuating key establishes a Reverse Tab Mode causing the carrier to move backward (left) to the nearest pre- ceding tab stop position and causing the platen to rotate (in- dex) so as to position the Printing Element (16) one line down on the paper, thereby to facilitate typing the next line of sin- gle column material without effecting a carrier return and for- ward movement of the carrier to the beginning of the column. Each subsequent shallow depression of the tab actuating key causes the carrier to move backward to the next preceding tab stop posi- tion without indexing, thereby to facilitate typing the next line of multiple column material without effecting a carrier return and forward movements of the carrier,. The Reverse Tab Mode can be ended by activating almost any other key, whereupon subsequent shallow depression of the tab key causes the carrier to move for- ward in normal fashion.
411763
Scm Corporation
Shapiro Cohen
LandOfFree
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