Patent GB-216144-A (GB)
Abstract: 216,144. Soc. Italiana Registratori (S.I.R.). May 15, 1923, [Convention date]. Web feeding and guiding arrangements; platen - impression arrangements; line-spacing mechanism; roller inking-mechanism.- Relates to web-feeding arrangements for cash registers &c. of the kind in which a detachable rocking-member supporting spools and feeding- mechanism is adapted to carry the web into contact with the types, and comprises the provision on the rocking member of an inking-roller which is moved into contact with the types before the rocking member is actuated. A plate 1, mounted to rock on a shaft 3 on the framework, supports web spools 8, 9, and a feed-roller 11 provided with a ratchetwheel 14 engaging a detent 15, and a line-spacing pawl 16 on an arm 17 which is pivoted coaxially with the feed-roller, and is formed with fingers 17', 17<11> for engaging a stationary stop 55. An arm 23 and a bell-crank 18, pivoted coaxially with the feed-roller, are in the path of lugs 52, 51 on a revoluble disc 53, a finger 30 on the bell-crank abutting on a pin 28 on the arm, which abuts on a pin on the plate 1. The bell-crank carries an arm 19 on which is mounted an inkink-roller 20. The web passes from the spool 9 to the spool 8 and over the feed-roller 11, being guided by rollers 12, 56. The spool 8 is actuated from the spool 9 by means of a flexible. driving-band 10 passing over pulleys 5, 4 on the spools. tension being maintained on the web by employing a pulley 5 that is larger than the pulley 4 on the spool 8. A detachable flange 46 on the spool 8 carries a spring-operated arm 48 having a finger 50 for gripping the end of the web. The guide-roller 12 is carried by a pivoted arm 31 connected to a spring 33, a catch 36 being provided for retaining the arm when the guideroller is released. In operation, the bell-crank 18 is rocked and returned by the lug 51 and a spring 29 respectively, the plate 1 remaining stationary, and the inking-roller is thereby moved into and out of contact with the type-wheels 13, the impact being cushioned bv a spring 21 connected to the arm 19. The lug 51 then engages the arm 23 and rocks the plate 1, the web being moved into contact with the type-wheels, and the pawl 16 being caused, by engagement of the finger 17<1> with the stop 55, to move idly over the ratchetwheel 14. When the lug 51 releases the arm, a spring 42 returns the plate, and the finger 17<11> engages the stop 55 and causes the pawl to turn the ratchet-wheel. The, mechanism can be silenced by depressing a hand-crank 26 having an arm 25 connected by a link 24 to the arm 23, the hand-crank being retained in either position bv a spring 27. On depressing the hand-crank, the arm 23 is moved out of the path of the lug 51, and the spring 29 moves the bell-crank 18 out of the path of the lug 52. The returning- spring 42 is connected to a pin 38 on the plate 1, and a member 39 which is formed with a fork engaging the pin, and a hook 40 engaging a groove in a sleeve 58 mounted freely on a shaft 43 on the framework. The plate normally engages a second groove in the sleeve. The plate can be moved laterally on the shaft 3, to permit of changing the web, a spring stud engaging one of two grooves in the shaft to retain the plate. Or, on releasing the hook 40, the plate can be withdrawn from the machine.