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:
May. 03, 1977
Filed:
Oct. 16, 1975
Graham A Byrt, Bristol, EN;
John E Mockett, Bristol, EN;
Masson Scott Thrissell Engineering Limited, Bristol, EN;
Abstract
A continuous web of paper is fed from a reel by a driven roller and a cooperating pressure roller and cut into sheets by a pair of rotating knives. The shafts on which the driven roller and one of the knives are mounted, are drivingly connected by a presettably variable ratio gear box and the drive is obtained from a main motor which is connected to the driven roller shaft. A differential gear is positioned between the main motor and the driven roller, the shafts of which are connected to two of the input/outputs of the differential gear. The casing of the differential gear is connected to an auxiliary motor which is connected to a speed regulator. The speed of the web and the rotational speeds of the driven roller and the knife shaft are monitored and compared with the desired sheet length and a signal indicative of any error between the desired and actual sheet length is used to control the speed regulator.