Abstract: A paper feed apparatus for a business machine having endless forms feeding mechanism and sheet feeding mechanism incorporates lever means operable to disable the sheet feeding mechanism through movement of the sheet feed friction roll shaft about one of its ends thereby to separate the feed roll from engagement with a platen.

Abstract: Disclosed is a preferably transparent removably mounted cover plate for covering the top opening or printing point area in a printer, e.g. a needle printer, which serves to reduce noise and to prevent the introduction of foreign substances and dust. Of particular advantage is the inclusion on the cover plate of paper guide elements, a switch actuating cam which acts on a switch to shut off the machine when the cover plate is removed or swung out, and a paper tear-off edge.

Abstract: A tab stop assembly characterized by an integrally molded part comprising a slotted body or rack part joined to individual tab stops and including integrally formed spring elements to maintain the tab stops in position within the slots of the body after assembly.

Abstract: An electromechanical printer having characters of a type font located on radial spokes of a circular type disc is disclosed. The type disc is normally arrested and connected to be driven about its axis by a unidirectional motor source via a slip clutch. Selection-print activating mechanism responsive to source, e.g. keyboard, generated mechanical outputs serve to select a character stop, in an assembly of character stops, corresponding to characters located on the spokes of the type disc and, incident to selection of a character stop, to release the normally arrested type disc. The type disc is provided with counterstops adapted to engage selected character stops positioned in the path thereof and to move the character stop assembly to a frame supported final positioning stop which arrests the type disc with the selected character opposite a print point.

Abstract: A tabular stop assembly having two sets of uniformly spaced tab stops for use with a typewriter with a dual pitch escapement wherein individual stops of each set are formed on each of an array of uniformly spaced C-shaped tabs which are mounted for rotative movement relative to a tab rack to first and second set positions corresponding to a selected escapement pitch.

Abstract: A normally engaged toothed cone clutch mechanism to allow disengagement of the platen of a typwriter from a line indexing ratchet wheel to enable rotation of the platen independently of the ratchet wheel includes a clutch member and a connection between the clutch member and the ratchet wheel. The connection takes the form of a spring washer secured to the clutch member and pins extending axially from the ratchet wheel toward the clutch member. The spring washer is formed to embrace and grip the pins to transmit rotary motion of the ratchet wheel to the clutch member without play yet allow axial sliding movement of the clutch member to disengaged position while maintaining its connection to the ratchet wheel.