A typewriter which is remotely operable or capable of providing signals for remotely operating another typewriter. The typewriter has movable mechanical mechanisms, such as interposers, for operating the character printing and carriage function mechanisms of the typewriter. A mounting board is horizontally mounted to the typewriter frame beneath the typewriter mechanism and a plurality of horizontally operable solenoids are mounted to the underside of the mounting board. The solenoids are connec...

A high speed printing apparatus in which a plurality of type wheels each having a helical spring disposed therein are rotatably mounted on a shaft in side-by-side relation, with one end of the helical spring anchored to the type wheel and the other end thereof anchored to an operation bar to bias the type wheel in one direction, and the type wheels are rotated all at once by rotating the operation bar and stopped by respective associated selection members when the type faces to be printed of the...

A carriage drive for a high speed dot matrix printer, including a reversible stepping motor connected through a clutch to a rotary driven member that is in turn connected by a belt to the printer carriage. The clutch remains engaged as long as the motor operates in a character-spacing direction, but reversal of the motor disengages the clutch and permits a torsion spring to drive the carriage back to a line start position. Near the end of the return movement, a flywheel decelerator absorbs the k...

Loading of a continuous form in a printer is facilitated by means of an auxiliary feed which is activated when the printer mechanism is moved to a non-printing position for loading.

High quality non-impact printing based on transfer of images from a revolving font drum to a page blank carried by a receptor drum rotating with the same surface velocity as the font drum, but precessing with respect to the former, the images being developed upon transfer of a full page of information to the blank. Alternatively, the receptor drum can have an image-receiving surface for intermediate storage of images and subsequent transfer of these images to a page blank for visual development ...

A printing assembly including a support means supporting a rack and adapted to be attached to a drafting straight edge. The rack extends through a head assembly and is engaged by a pinion gear for moving the head assembly along the rack. The head assembly is connected through links to a carriage which supports two longitudinally extending rows of type characters. The head means is moved between a raised position and a lowered position and includes a hammer pin for engaging one of the type charac...

Type element changer mechanism for selectively interchanging type elements on a single element typewriter to provide a plurality of type fonts, selectively changeable under the control of a control unit allowing a typewriter having a memory and/or control unit to print several type fonts without manual changing of the type elements.

A slide ruler is provided to determine how draft copy should be marked in order that the draft might be recopied with spaces added or taken away as needed in order that each line in the final copy will end at a predetermined point to provide an even right hand border. In the ruler, the slide base carries a first scale with fixed left hand index and the slide carries a second set back scale with a fixed left hand index, and a movable right hand index is provided so that a part of the final copy l...

A serial printer is provided having a movable type-carrying member, a carriage bearing a pair of printing hammers having heads partially superimposed and a fixed interposer having a plurality of elements disposed between the type-carrying member and the hammers. Printing is effected by cooperation of the print hammers and the type-carrying member through the interposer.

An impression device for a parallel printer, in which a row of characters or digits is imprinted by a row of types, has an impression member with a convex curved impression surface rocking on a copy sheet and on an inked ribbon covering the row of types so that imprints of the characters are made. The rocking motion of the impression member is obtained by alternately moving the ends of the same toward and away from the row of types after a frame carrying the impression member, has been rapidly m...