Patent GB-106354-A (GB)
Title: Improvements in Printing Machines.
Inventor: WINKLER CARL
IPC: B41F3/02
Filed: 1916-07-04
Abstract: 106,354. Winkler, C. July 4, 1916. During printing- machines; stopping, starting, and like arrangements. - Relates to the driving-arrangements of cylinder printing-machines. The driving- motor and fly-wheels are arranged within the limits of the frame of the press, and the press is normally driven through a clutch controlled from the side of the press, but when desired may be driven slowly either by a slow-speed friction gear or by a hand gear. The motor drives the press at a variable speed through conical pulleys and an adjustable driving-belt. As shown in Fig. 2, the driving-gear is arranged within the limits of the machine frame and comprises a motor d, countershaft h and driving-shaft m which drives, by a pinion n, a gear o, which, through a connecting-rod p, Fig. 4, reciprocates the bed of the press. The shaft h is driven as described in Specification 104,858 by conical pulleys e, f and belt g adjustable to vary the press speed, by a screw and nut v, v<1>, and the shaft m is driven from the shaft h by a belt l passing round a flywheel k, Fig. 4, forming the loose slidable member of a friction clutch. Fly-wheels k<1>, k<2> are provided on the shaft h and motor shaft. The pinion n is secured to the shaft m by a pin which shears under excessive load. The clutch member k is controlled by gearing as described in Specification 107,735 and comprising a rock shaft u<4>, Fig. 6, connected by arms u<5> and rod m<3> to the rockshaft m<4>, Fig. 4, carrying a clutch-operating arm. The rock-shaft u' is connected also by arm u<3> and toggle u<1>, u to a rock shaft u<11> operated by pedals u<9>, u<19>. By depressing the pedals u<9>, the clutch is closed and locked by the straightening of the toggle u<1>, u, and, by depressing the pedal u<19>, the clutch is opened. To permit of control of the clutch from the other side of the machine, the pedals and linkage u, u<1>, u<3> are duplicated. If it is not possible to extend the shaft u<11> across the machine, the toggles are connected for simultaneous operation by links u<7>, and arms u<6> on a rock-shaft u<8>. The slow-speed friction gear comprises a friction disk w and friction pinion w<1>, Fig. 4, keyed to a spindle journaled in the free end of an arm w<3> on a rock shaft w' which can be turned by depressing a pedal w<7> so as to raise the disk w and pinion w<1> into engagement respectively with the hub w<8> of the clutch member k and with a friction wheel w<9> keyed to the shaft m. The hand driving-mechanism is similar to that described in Specification 107,179 and comprises hand operated toothed pinion x<2>, Fig. 10, which, when the clutch is open, may be moved into engagement with a gear x<3> secured to the fixed member m<1> of the clutch, and is held in engaging position against the action of a disengaging spring x<11>, by a spring locking bolt x<12>. When the clutch is again closed the clutch member k engages a roller x<6> on an arm x<5> of a rock shaft x<7> connected by an arm x<8> to the locking bolt, so that this bolt is withdrawn, to allow the disengagement of the pinion x<2>.