Patent GB-399590-A (GB)
Title: Improvements in and relating to printing machines
IPC: B41K3/04
Filed: 1932-05-07
Abstract: 399,590. Printing-machines. ARMELIN, E. R., BRIGHTWELL, H. E., and PLASKETT, A. F. G., Riverside Works, Standish Road, Hammersmith. May 7, 1932, No. 13263. [Classes 100 (i) and 100 (ii).] In a connection with a rotary machine for rinting on a web 1 by means of one or more couples 4 to which the web is fed by rollers 2, 3, the web is also printed by a device 6 which comprises a flat type element, or a plurality of type elements, mounted in a carrier 25, Fig. 2, which is given a motion in an elliptical path, tangential to the plane of the web, the face of the type remaining parallel to the surface of the web throughout its motion and moving at the same speed as the web during the printing operation. The carrier 25 is secured to a pair of cross members 23 pivoted to two pairs of parallel links 18, which are given combined oscillating and reciprocating motions by means of crank pins 17 on shafts 14, 14<1> which are rotated in the same direction by gearing from a shaft 7a. In the ends of the links 18 pins 20 are adjustably mounted, and the pins move in slots 19 and cause the resultant motion of the type elements to be an ellipse M. Eccentrics 30 on the shaft 14 reciprocate an impression table 28 with which the printing member co-operates. In modifications, embossing, perforating, cutting, or scoring members may replace the printing-members, and the table 28 may carry a heating element, and the cross members 23 may carry means for feeding a gold or colour leaf to an embossing-die. The printing-surface is inked by means of a travelling roller 38. Figs. 2 and 5, which is carried in spring-pressed lever arms 37 pivoted to arms 36 which rotate around the pins 26 by means of which the type carriers 25 are connected to the members 23. The rollers 38 are fitted with axially reciprocated distributing rollers 37a, and are supplied with ink from a segmental plate 51 which receives ink from a messenger roller 52 and supply rollers 50, 49, 48, 46, and a duct roller 45. The type frame 25, Fig. 6, is fitted with a number of type-holders 34. the lateral position of which is determined by stops 35. The type slugs 34a are secured by clamps 57 to the holders 34, a gauge of similar form to the frame 25 being used to position the slugs 34a in correct position relatively to the path of the web prior to the insertion of the holders in the frames 25. The gauge is fitted with a glass top to enable the setting of the type to be seen. Projections on the holders 34 rest on shoulders 33 in the frame 25, and an arched spring 60 engages a groove 59 in the frame 25 and under the action of a knurled nut 61 on a central screw 62 retains the holder 34 firmly in position. A counting-mechanism, comprising a ratchet wheel 79, Fig. 12, operated by a pawl 80 on a rocking-lever arm 81 which is oscillated by the carrier 23, is provided, and in order to facilitate the arrangement of the labels in counted batches, a marking device 94, Fig. 11, is pivotally mounted in a holder 34 and is normally raised out of action by a spring 93. A cam bar 92 is rotated once in a predetermined number of operations in order to depress the marking device 94, and this operation is controlled by a second ratchet wheel 89 also operated by the pawl 80. The wheel 89 is fitted with a catch which at the desired operation prevents the reciprocation of a link 85 pivoted to an arm 84 on a shaft 83 carried by a slide 82 which moves in the lever arm 81. The shaft 83 is given a rotary movement only when the catch holds the link 85, and the movement of the shaft 83 is transmitted to the cam bar 92 to enable a mark to be printed. A catch plate 88 restores the bar 92 to its normal position.