GB190320753A - Improvements in Inking-mechanism for Printing Machines. - Google Patents

Abstract

20,753. Pierce, G. H. Oct. 15, A.D. 1902, [date applied for under Patents Act, A.D. 1901]. Inking-apparatus; platen presses.-Relates to the inking- apparatus of machines such as are described in Specification No. 25,306, A.D. 1902. The platen 21 is on the fixed frame 20, and the type bed 30 is carried by arms 28 pivoted at 31 and rocked by connecting-rods &c. The types 23 are in a chase 24 secured by flat springs 26 and a clamp 27. An ink-distributing plate 50 is fixed on a shaft 51 journalled on the type bed 30, and is rotated by a ratchet 53 and a pawl 54 on an arm 56 rocked by a spring 63 and a pin on one of the sprocket-wheels 61. Inking- rollers 66 are journalled on a pair of endless chains 69 on wheels 61, 72 on shafts 70, 73 on the type bed. The shaft 73 is adjustable by screws 75. The shaft 70 is driven by gearing from a wheel on the shaft 31. The rollers 66 pass round the bed over the plate 50 and across the types 23. They are yieldingly pressed against the types by blocks on the sides of the bed pressed upwards by springs and having grooves for engaging the roller shafts. A duct 41 and duct roller 44 are mounted on brackets 42. A "brayer" roller 90 is journalled in arms 92 pivoted in arms 94 on a shaft 95 in the extensions 97 of the brackets 42. The shaft 95 is rocked by a rod 99 connected to a crank 100 on one end of the shaft 70. The shaft 93 of the arms 92 is acted upon by a helical spring to press the roller 90 on to the roller 44 and on to the plate 50. When the bed rises, the roller 90 moves on to and over the plate 50, Fig. 6, and when the bed is down it is moved to and fro on the duct roller 44. An endless band may be used in place of the chains 69. The roller 44 is rotated by ratchet gear 48 and a rod 49 connected to one of the arms 28. The web of paper 40 passes between the platen and bed.