Patent GB-390814-A (GB)
Title: Improvements in or relating to means for feeding supplementary products to the principal product of a printing machine
IPC: B41F13/68
Filed: 1931-10-08
Abstract: 390,814. Printing-machines. QUICK, G. G. and WHITEHEAD, W. A., 109, Borough Road, London. Oct. 8, 1931, No. 27988. [Class 100 (i).] Associating - apparatus. - In a printing- machine means for feeding a slow-speed sheet or sheets to a higher-speed sheet or sheets comprises a rotatable sheet-taking device, and means for imparting two components of movement thereto, the components being such that the device is retarded to present it to the slowspeed sheet at (or approximately at) the speed thereof, and then to accelerate the device to speed up the sheet to present it to the higherspeed sheet at (or approximately at) the speed thereof. The supplementary or slow-speed web 2 passes between and is cut into sheets by a cutting-cylinder 3 and gutter-cylinder 4, and the sheets are carried to pins 10 on a collecting-cylinder 11 by pins 5 on a pincarrier 6 moving with a varying speed. The main or higher-speed web 1 is cut by a cutting- cylinder 7 and gutter-cylinder 8 and the sheets are carried by pins 9 on the cylinder 8 to the pins 10 on the collecting-cylinder 11. The collecting-cylinder 11 is provided with folding-blades 12 which deliver the associated sheets or product to folding-off rolls 13. In the arrangement shown the collecting-cylinder has a circumferential length of three times the length of the product, and a speed of the supplementary web is equal to one half that of the main web or webs, so that it is necessary to actuate the carrier 6 so that the half-speed web portions are accelerated to the speed of the main web and delivered to the pin 10 at every other third of a revolution of the cylinder 11. The carrier 6 is supported from a shaft 14 which is eccentrically mounted at each end in cylindrical blocks 15 rotatably mounted in sleeves 16, one of which is formed with an internal gear 17 meshing with a pinion 18 fast with the shaft 14. The blocks 15 are driven through gear-wheels 19 on a shaft 20 which is driven through gear-wheels 21, 22 from the gutter-cylinder 4. The shaft 20 also drives by gears 24, 25 the internally geared sleeve 16. The gears are so arranged and proportioned that two rotations are imposed on the carrier, that due to the rotation about ts own axis and that due to its rotation about the axis of the blocks 15. During the retarding portion of the cycle, one rotation is in the opposite sense to the other, and during the accelerating portion of the cycle they are in the same sense. The rotation of the sleeve 16 moves the carrier 6 in a substantially arcuate path to facilitate the transference of the supplementary products by the pins 5. The internally geared sleeve 16 may be rotated at different speeds to vary the values of acceleration and retardation. If desired, the sleeve 16 may be fixed against rotation and the cylindrical blocks 15 driven by step-up gearing from the cylinder 4. The carrier 6, which has a balancing extension, is in the form of a troughshaped member having in the trough 26 a shaft 27 which is rocked to project and retract the pins 5 by a cam which is engaged by a roll or an arm secured to the shaft 27. The cam is freely mounted on the shaft 14 and rendered stationary by a link 30 which is pivotally connected to an arm 31 mounted to oscillate about a fixed axis, the arm permitting the cam to partake of the movement of the shaft 14 about the axis of the blocks 15. A guide 33 is provided for guiding the trailing end of the product taken by the pins 5 on the carrier 6. In a modification, the sheet-taking pins are carried by a member which is mounted to slide radially in a cylinder or the like rotated at constant speed, and acceleration and retardation of the member are effected by moving it radially in the cylinder as by means of a cam. In a further modification, the sheet-taking pins are mounted on a member carried by a rotatable cylinder, the member having a relative angular movement with respect to the cylinder. The arrangement shown and the last described modification may be utilized to pick up stationary sheets and accelerate them for presentation to the collecting cylinder.