Patent GB-189801293-A (GB)
Title: Improvements in or connected with Web Treating or Web Fed Machinery used in Printing or similar Operations.
Inventor: RAY ALBERT HOYT
Filed: 1898-01-17
Granted: 1899-01-07
Abstract: 1293. Ray, A. H. Jan. 17. Rotary machines.-A web printing-machine comprises an impression cylinder B, printing-segment A, and cutting-apparatus for severing the printed web into sheets, cards, tickets, or the like. The type T is held by screws a<3> or other means in a small chase a' fitted within a groove in the printing- segment A, which may be fixed upon a shaft a' provided with an operating-handle E; the chase may be held within the groove by spring-controlled pins a'. The cylinder B carries pins b which engage with apertures in the web C, and is driven intermittently by means of a segmental arm carried by the shaft a<1> and adapted to engage with a disc mounted on the shaft b<1>. A rubber or yielding pad may be secured to the segmental arm so as to ensure close driving contact, and the whole is so arranged that for every rotation of the shaft a<1> the web travels exactly through a distance equal to that between two consecutive pins on the disc. The impression cylinder B is normally locked by means of notches b<31> which engage with a bolt b<30>, but just before the advancing edge of the segmental arm strikes a pin on the disc, the bolt is withdrawn by means of a lever b<33> actuated by a cam on shaft a'. In a modified form of apparatus for driving the impression cylinder, the rubber or yielding pad is secured to a carrier fitted to slide radially upon an arm secured to the shaft a<1>, and prevented from engaging with the disc on the shaft b<1>, until the type is in the correct position for printing. Ink is supplied to the ink drum F, mounted loosely in bearings d<5>, and is distributed by means of a short roller H, mounted in bearings d<9>, one of which is carried by an oscillating forked lever K, actuated by an arrangement of links k<3> connected to an adjustable crank-pin on the disc, previously mentioned. From the ink drum F, the ink may be transferred to the type T by suitable means of ordinary construction ; in Fig. 3 is shown for this purpose a roller N mounted in an adjustable bearing n<5> at one end and carrying at the opposite end a disc which rests against a disc on the shaft a<1>; the diameter of the disc carried by the spindle of the roller N may be varied. When two colours are used, the distributing-roller may be divided by a circumferential groove. The web may be cut by means of fixed shear blades P and a vertically reciprocating blade P<1> which may be actuated by a link R<1> connected to a swinging lever r; the blades P may be provided with cushioning-devices. As the web travels through the machine, it may be guided by suitably-bent bars W adjustably supported by a rod u and provided with rearwardlydirected pieces w<1>. An additional guide, in the form of a looped piece of wire 1, may be used for guiding the web. The printed cards &c. c' are discharged into a receptacle, which may be formed of wires 7. A counting-apparatus I attached to the machine is actuated by a pawl and lever i<4> oscillated by a cam on the shaft a'.