Abstract: In a typewriter a carriage spacing mechanism is mounted on a support element to space a paper bearing carriage independently from a base structure and is connectable for assembly of the machine to a control means supported by the base structure. Keys, intermediate levers and type basket are assembled independently from the base structure and are fixed to the base structure only through the medium of a supporting block for the keys and fixing means for the type basket. A plate picks up the striking movement of the type bars and comprises a plurality of bearing elements disposed so as to cause the plate to rock about two pivot elements of the bearing elements and a cam portion which is dimensioned so as to regularize the stroke of a transmission element in dependence upon the particular type bar actuated for the striking.