Patent GB-369980-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41L45/00
Filed: 1930-10-20
Abstract: 369,980. Printing-machines. ADDRESSOGRAPH CO., 901, West Van Buren Street, Chicago, U.S.A. Oct. 20, 1930, No. 31455. Convention date, June 6. [Classes 100 (i) and 100 (ii).] Rotary machines; addressing and like machines.-In a machine for printing bills &c. provided with both constant and variable impressions, the constant matter is printed on a web by means of a rotary couple, the web is cut into sheets, and the variable impressions are printed on the sheets by addressing or like series-printing mechanism. As shown, a web w is printed on one side by a rotary segment 39 coacting with an impression segment 30, and is then perforated and cut into sheets which are fed along a lateral guideway 211 to address-printing and rotary printing- mechanism which print on the other side of each sheet, the mechanism for feeding the sheets into successive addressing positions and to the printing-mechanism being that described in Specification 348,022 ; the printing-mechanism may be that described in Specification 348,025. Feeding and registering webs.-The web w is unwound from a roll supported as described in Specification 348,022, and passes between the segments 39, 30, then over a ledge 40 to a looping-roller 46, and finally between feed rollers 47, 48, which are rotated intermittently by ratchet mechanism as described,also in the above Specification, and draw the web forward when it is released by the segments. The roller 46 is mounted in a frame 42, which is rocked about a pivot 41 against the action of a spring 122 by a rotary cam engaging a roller 118 on an arm 117 adjustably secured to the frame 42. The web is thus formed into a loop while being fed forward by the segments 39, 30, and the loop is subsequently taken up by the rollers 47, 48 ; the latter advance the web the width of the impression plus the width of the top margin on one sheet and the bottom margin on the next sheet. To assist the feeding action of the segments 39, 30, one or more discs is or are fixed on the shaft 29 of the segment 30 so as to coact with rollers 140 mounted on arms 139 periodically rocked about a pivot 138 by a cam 132 the peripheral extent of which may be adjusted. Delivery, cutting, and perforating apparatus. -Lines of perforations are formed in the web w by means of notched discs 123 pressed towards the roller 47 by a spring 128 connected to a rod 127 fixed to a lug 126 on a shaft 125 carrying arms 124 on which the discs are mounted, each arm being adjustable along the shaft 125 to vary the position of the lines. By manipulating a lever 130 fixed to the shaft 125, the discs may be raised to allow the web to be ipserted. The web is cut into sheets by stationary and movable blades 193, 194 constructed as described in Specification 348,022, and the sheets are delivered up to a stop 218 in the guideway 211 by rollers 204, 205 as described also in the above Specification. Inking-apparatus.-The plate 54 is inked by apparatus which forms the subject-matter of Specification 367,918. Printing - surfaces; impression rollers and blankets.-The rotary couple 39, 30' forms the subject-matter of Specification 367,917.