Patent GB-189801331-A (GB)
Title: Typewriting Machine.
Inventor: ANDERSON FREDERICK FERDINAND
Filed: 1898-01-18
Granted: 1898-10-22
Abstract: 1331. Anderson, F. F., Krauss, T., and Seeser, V. Jan. 18. Type - writers.-Fig. 3 shows a central vertical section of the machine. Secured to the back-plate 2 of the framing is a shaft 4 on which is journalled a cable wheel 5 round which passes a belt or cable 32 the ends of which are attached to the opposite ends of the bar 30 of the carriage frame. Forming part of the wheel 5 is a ratchetwheel 7 operated to feed the carriage by a pawl on one end of a lever 8 connected at its other end, by a rod 12, to an arm 13 of a shaft 14. On the latter is a swinging frame 16 to which the arm 13 is connected by a spring 17 so that the arm 13 may be stopped by a post or stop 18 before the movement of the frame 16 is completed. The frame 16 is operated by rods 21 connected by adjusting-clips 90 to arms of shafts 87 on which the key levers 93 are pivoted. The shafts 87 are slotted longitudinally and the eye of each key lever has a feather engaging such slot. The width of the slot is sufficient to permit of the shaft being operated by any key lever without moving any of the others. Each key lever is provided with a stem having an elongated key piece 96. The wheels 5 and 7 are turned by the pawl lever 8 against the pressure of a clock spring 117, or of a spiral spring surrounding the shaft 4. The wheel 5 is engaged by a dog which may be operated by a release key arrangement to lift it and the feed-pawl from the ratchet teeth, when the carriage will be returned to initial position by the spring 117. The bar 30 of the carriage runs between pairs of flanged rollers 29 on brackets 28 carried by a bar 19, normally held by springs against the back-plate 2. On the ends of the bar 19 are arms extending towards the front of the machine and guided to move rearwardly. These arms are provided with pins engaged by slots in the upper ends of arms 80 of a shaft 78 having arms 77 connected by rods 76 to arms 75 pivoted on a shaft 72. The arms 75 are operated by two shift keys to move the bar 19 and carriage rearwardly to bring the second and third sets of type into operation. On the bar 30 are arms 38 to which the end bars 36 of the carriage are pivoted. The bars 36 are carried by uprights 35 of a bar 34 running, by means of a ball bearing 44, upon the top plate 3. The cup 44 containing the ball 46 is constructed in two parts and surrounds the greater part of the ball, so that the latter is lifted with the carriage when it is turned up on its pivots 37. The shaft 39 of the paper cylinder 40 is journalled in the bars 36, and it is provided at one end with a spirally-grooved cam-wheel engaged by a dog pivoted on a bar sliding in the carriage. As the carriage returns to initial position, the sliding bar is engaged by a stop and moved longitudinally so that its dog moves along one of the spiral grooves of the cam-wheel to turn the paper cylinder for line spacing. The paper is held on the cylinder by a roller 49, in spring slides 50 ; and by a roller 54 in a bracket secured to the bar 34. Below the paper roller is a segmental bar 66 having a rib of rubber &c. which forms the platen on which the types strike. The types strike through a slot 59 in the top plate, and are guided by rollers 108. The ribbon 68 passes over the slot 59, as shown, from a spool 67 to a winding-spool 62 on the shaft of which is a ratchet-wheel operated by a pawl on an arm of the shaft 14. The key levers are connected by rods 98 to U-shaped clips 99 pivoted to the heels of the type levers 100. Each type lever is pivoted at 105 in a U-shaped bracket 104. The brackets 104 are secured by screw-bolts 106 to the top plate.