Patent GB-190521806-A (GB)
Title: Printing Press.
Inventor: MILLS EDWARD NEWTON
Filed: 1905-10-26
Granted: 1906-07-12
Abstract: 21,806. Mills, E. N. Oct. 26. Cylinder machines with plane printing-surfaces.- In a cylinder printing- machine, the bed 8, Fig. 1, is reciprocated by means of bevel-gearing 3,. shaft 4, crank disk 5, and connecting-rod 6, in inclined guideways on the top of the frame 10. Beneath the movable type bed 11 is placed a spider having four radial arms 12, the ends of which bear against wedges 13 beneath the type bed 11. The spider is provided with a depending shaft 14 which carries a radial arm 15, supporting a roller 15<a>, which during the downward motion of the bed travels against one side of a rail 16, until, passing a spring switch 17, it is moved to the opposite side of the rail, causing a slight rotation of the arms 12 and thus moving the wedges and raising the bed during the operative stroke. The roller returns through the gap 18. To prevent an impression, the switch is locked by:a catch 19. The cylinder 21 carries two gear-wheels 22, 23, the former of which meshes with a rack 24 on the reciprocating bed and the latter with a stationary rack 25, thus causing the cylinder to be reciprocated in the opposite direction to the bed. The pile of paper is supported on a table comprising a plate 26 with rearwardly-extending fingers 27, secured to the frame 10, a plate 28 with undercut grooves to accommodate the fingers 27, and rearwardly-extending fingerms 41 secured to a plate 42. The plate 28 carries side guides 33 and front and back guides 34, 31, and is provided with projections which engage vertical slots in side plates 29, sliding in grooves 36 in the machine frame 10 and carrying a rack 37 which meshes with gear segments 38 on the cylinder. When the cylinder is in its forward position, shown in Fig. 1, the paper rests on the fingers 27 and plate 26 and on the fingers 41. During the return motion of the cylinder, the - segment 38 gears with the rack 37 on the plate 29, moving the plate 28 with the guides and the pile of paper backwards, until the front edge of the paper is just in advance of the plate 26. In this position, the bottom sheet is taken by a row of suction ports 45 on the cylinder and drawn out as the plate 28 and the guides 34, 31 move forward and transfer the front edge of the remainder of the pile of sheets on to the fingers 41. The vacuum in the cylinder is created by means of a pump 48 operated from the main shaft. After having made a complete revolution with the cylinder, the front edge of the sheet is blown away from the cylinder and carried beneath rollers 63 and over a series of bars carried by the boxes 59 of the cylinder and into grippers 64, operated at suitable intervals by inclines 65 secured to the machine frame 10. Ink is supplied from a duct 50 by a roller carrying at one end a ratchet-wheel 52 and a loosely swinging frame, provided with a dog 53 adapted to engage the ratchet-wheel. As the bed makes its downward movement, the loose frame comes in contact with an incline on the machine frame, which swings it up into a horizontal position, centrifugal force keeping the dog 53 out of engagement with the ratchet-wheel. The dog then drops by gravity into engagement with the ratchet-wheel, and, on travelling clear of the inclines as the bed returns, the frame 54 falls by its own weight, rotating the duct roller. The ink is distributed by oblique distributors and the forme inked by rollers carried by frames attached to the cylinder boxes 59.