Patent GB-189819796-A (GB)
Title: Improvements in and relating to Paper Feeding and Cutting Apparatus for Printing and Ruling Machines.
Inventor: BENNETT JAMES
Filed: 1898-09-19
Granted: 1899-08-26
Abstract: 19,796. Bennett, J., and Tottey, R. Sept. 19. Cylinder machines with plane printing-surfaces; platen presses.- Relates to apparatus for feeding paper from a roll to cylinder or platen printing-machines. Fig. 1 shows a side elevation of an apparatus for feeding paper to a cylinder printing-machine, of which X is the impression cylinder. The frame a of the apparatus is pivoted at a<3> in bearing-blocks mounted to slide in brackets a<5> on the machine frame a', so that the apparatus may be turned back out of the way for ordinary feeding by hand. The paper is fed from a roll b, under rollers d, d' between which is a revolving cutting-disc d<2>, adjustable on its shaft, which disc may be used for cutting the web longitudinally into two widths. One of these, d<6>, may be passed round a guide-roller d<7> to the winding- roll e, and the other e' to the cylinder X. The web is fed or drawn off the roll b, by a gauge roller f on to which the web is pressed by adjustable rollers f<1>. The paper is carried to the cylinder X by an endless band f<6> which passes round the roller f, round the three rollers f<7>, f<8>, f<9>, and round a roller f<10> near the cylinder X. If the paper is to be printed a second time, it may be passed round the cylinder X in the form of a web e<1> and be re-wound on the roll e. A set-off web may be passed from the roll b<7> and wound on the roll e with the printed web. The rollers for the rolls of web b, e, and b<7> are mounted so as to be readily removable for changing &c. The rollers b and b<7> are each provided with a spring and friction tension device to prevent the webs from paying- off too quickly. The winding-roll e is driven by an endless band, through a spring and friction driving-arrangement. The gauge roller f is driven to feed the paper at the same surface speed as the cylinder X by means of a wheel h<2> gearing with a wheel on the cylinder X. On the wheel h<2> is a pawl co-operating with a ratchet-wheel geared to the roller f. The pawl is controlled by an adjustable cam. The wheel h<2> may also have a pawl controlled by an adjustable cam and operating a ratchet for turning the roller f backwards so as to withdraw the unprinted portion of the web when the web is being printed and not being cut into sheets. The web is cut into sheets by a rotary cutter disc moved transversely of the web. This disc is mounted to travel in a frame, which is also mounted to slide so that it and the cutter disc may be moved along with the web while it is being cut. The frame is reciprocated by racks and gearing operated by a toothed segment on a lever operated by an adjustable block on the wheel h<2>. The cutter is traversed in its frame by bands connected to a pulley driven by gearing &c. operated, as the cutter frame moves, by a fixed rack. The traversing cutting-disc operates between the rollers f<7>, f<8>, f<9>, which are mounted in the reciprocating cutter frame. The gearing for driving the apparatus is modified according to the type of machine to which the paper is being fed. An arrangement applied to a platen press is described, in which the web is drawn intermittently between the platen and bed by the gauge roller &c., and is cut into sheets when at rest by a traversing cutter disc. The gauge or feed-roller and cutter disc are operated from the oscillating platen.