text-printing means for continuously printing text on successive sheets of paper and numbering means for automatically alternatingly numbering repetitively or consequently such that each number is printed on a predetermined number of successive sheets of paper printed with text by the text-printing means; the numbering means including; number-printing means for printing one or more numbers on a sheet of paper which has been printed with text by the text-printing means, detent means for activating or deactivating the number-printing means, electronic computing means for counting sheets of paper passing through the machine and signalling when a predetermined number of sheets of paper have been counted, control means for simultaneously signalling the detent means to activate the number-printing means and the electronic computing means to start counting or simultaneously signalling the detent means to deactivate the number-printing means and the electronic computing means to discontinue counting, detection means for signalling the electronic computing means that a sheet of paper passed through the machine, and number-changing means for changing each number printed by the number-printing means to the next consecutive number upon receiving the signal from the electronic computing means that the predetermined number of sheets of paper have been counted.