Patent GB-470290-A (GB)
Title: Printing machine
IPC: B41L47/46
Filed: 1936-04-02
Abstract: 470,290. Addressing and like machines. ADDRESSOGRAPH CO. April 2, 1936, No. 9774. Convention date, Feb. 5. [Class 100 (ii)] The impression and printing-plate feeding devices of an addressing or like machine are driven by two disengageable clutches on a shaft provided with a third clutch in connection with a driving-motor. Keys for controlling consecutive-printing, repeat or duplicate impression, and skipping are provided. In the machine shown in Figs. 3, 5, and 8, addressplates 20 are fed from a magazine 27 and moved along a guide 16 by means of a reciprocating pusher 40, and impression is effected by means of a roller 75 mounted on a carriage 78 and adapted to be raised and lowered in the manner described in Specification 470,289. The pusher 40 and carriage 78 are connected by linkage 66, 84, and eccentrics 63, 81 provided with clutches 61, 80, respectively to a shaft 60 which is connected by a clutch 145, and an Oldham coupling 140 to a shaft 59 geared to the armature shaft 53 of a motor 50. The clutches 61, 80, 145 each comprise a pawl 148 which is normally held out of engagement with a recess 150 by means of a spring-urged bell-crank 151, 152, 153 respectively. The clutches are controlled by a repeat-key 170, a consecutive-print key 171, and a skip-key 172. The key 170 is connected by links 161, 167 to the bell-cranks 152, 153 respectively. The key 172 is connected by a link 163 to an arm 164 on the pivot-rod 154 of the bell-cranks, pins 165, 180 on the pivot-rod co-operating a shouldered hub 166 on the bell-crank 151, and a shouldered hub, not shown, on the bell-crank 153. The key 171 is provided with lips for depressing the keys 170, 172. On depression of the key 171 all the clutches 61, 80, 145 are engaged, and, so long as the key is held down, the machine makes one impression from each of a series of address-plates. On depression of the key 170, the clutches 80, 145 are engaged, and, so long as the key is held down, successive impressions are made from the same addressplate. On depression of the key 172, the clutches 61, 145 are engaged and, so long as the key is held down, the address-plates are skipped. To aid the operator, the addressplates to be skipped may be provided with tabs having colour or other characteristics. A mirror 185, Fig. 5, secured to the magazine enables the operator to see the tabs of the address-plate that is in printing position. The key 170 is associated with mechanism for causing two or more impressions to be made from each address-plate. The mechanism comprises a ratchet-wheel 190 provided with alternate shallow and deep teeth 193, 194 cooperating with a pin 195 on a link 196 carried by an arm 197 on a rock-shaft 85 which carries a member of the platen-operating linkage 84. The bell-crank 151 associated with the addressplate feeding-clutch 61 is connected by a link 198 to a bell-crank 187 which is engaged by the pin 195 when the latter engages a deep tooth. When the key 170 is depressed, the clutches 80, 145 are engaged, and the clutch 61 is engaged and disengaged during successive cycles, the arrangement causing duplicate impressions to be made from each addressplate. By substituting a ratchet-wheel having a different arrangement of teeth, three or more compressions can be made from each addressplate. The mechanism can be silenced by turning a shaft 191 having a cam 200 for raising the pin 195. A knob 207 for turning the shaft is secured to a spring-urged sleeve 203 which is mounted on the shaft and has locking-notches 204 for engaging a pin on the framework. The address-plate that has been fed on to the anvil 35 is prevented from overrunning the pusher 40 by means of a stop 114 formed on a plunger 112 which is periodically raised by a cam 113 on the eccentric 63. An ink ribbon 118 is guided over the anvil 35 and is carried by spools 120, 121 provided with automatically reversible feed-mechanism 127, 128 which is operated by an eccentric 135 on the shaft 60. One of the spools may be provided with the ribbon-attaching means described in Specification 470,288.