The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 1980
Filed:
Jan. 29, 1979
Earl M Landis, Sagamore Hills, OH (US);
Webster C Roberts, Noank, CT (US);
James N Crum, Stonington, CT (US);
Harris Corporation, Cleveland, OH (US);
Abstract
An offset lithographic web printing press capable of printing a series of relatively short runs without interruption and with minimum waste of web material. The press includes a plurality of printing units. During a given run, some of the printing units are in a printing mode, while others are in a nonprinting or thrown-off mode. The web moves freely through the units which are thrown-off while those units are made ready for a succeeding run. Each unit includes a motor which has adequate capacity to drive such auxiliary equipment as a web infeed and folder, in addition to the unit, itself. Each unit motor may be clutched into a common drive line passing through all the units in order to drive the infeed and folder. Each printing unit also includes apparatus for throwing the printing cylinders of the unit to and from the web, and for changing the attitude of the web as it passes through the unit. A control system is included which controls the throw-off of the engaged printing units at the end of a preset count and also controls start-up of the units which are to be engaged in the next run. The control system includes a circuit for selecting the printing mode of the units so that any one or all of the printing units may be used for printing a given job.