Patent GB-190314571-A (GB)
Title: Improvements in Typewriters.
Inventor: HENLEIN SIEGMUND
Filed: 1903-06-30
Granted: 1904-06-30
Abstract: 14,571. Henlein, S., and Wasem, H. June 30. T y p e-writers.- Relates to arrangements for the employment of long and short keys, similar to those of a piano ; for preventing two types from striking the paper simultaneously; for releasing the carriage by a handle at the front of the baseplate ; for noiselessly adjusting the paper cylinder by hand, foot, or knee; and for spacing the letters and words by a separate device operated by a handle. The black and white keys are attached at the ends of key levers some of which are straight and some U-shaped, all the levers being pivoted on a shaft 3, Fig. 1. The straight levers, and the shorter shanks 10 of the U-shaped levers are connected to the type bars by connecting-rods 5. A vertical rail runs across the keyboard below the levers, a vertical slot being provided for each lever. A series of separate locking-plates are arranged to have a small sliding mntion on the front of the rail, one plate being arranged between every pair of adjacent slots in the rail. When a lever is depressed, it passes between two plates, forcing the other plates tightly together so that a second lever cannot be depressed until the first is released. A toothed sector 20, below the base-plate, works on a pivot 18, and engages with a pinion 21 on the shaft of which is another pinion 23 gearing with a rack 24 on the carriage. The sector is operated by a traction rod 25, which has a small sliding motion relatively to the sector, and terminates in a handle 26 with a pointer 27, which moves over a scale 28. When the carriage is required to be moved backwards, the rack is released by the raising of a rod 33. The rod is raised by pulling outwards on the handle 26, a pin 29 at the end of the rod 25 thereby pulling on the rod 30 and actuating a cranked lever 32. The rod 30 has a slot through which the pivot 18 passes, and a curved slot in which the pin 29 works when the sector 20 is operated. The pin 29 passes through a longitudinal slot in the sector. The shifting- device for the paper cylinder consists of a shaft 37 provided with a ball bearing and, at one end, with a stepped disc 38. At the other end of the shaft is a disc 46, provided with notches 47, 48, Fig. 6. In front of the disc are pivoted two arms 49, 50, and to these arms are pivoted levers 52, provided with noses 55, 56 adapted to engage the notches when the levers are depressed. One of the levers is marked " Capitals " and the other " Figures." A similar device is attached to the middle of the shaft and is provided with knee levers, which may terminate in treadles. The stepped disc is kept in its normal position by springs 45 coiled round a wire bow 44 and bearing against flaps 43 on the back of the disc. The support 61 of the paper cylinder carries a roller 62, which normally bears on the middle step of the disc. When the shaft 37 is rotated, the roller passes on to the top or bottom step and the paper cylinder is moved up or down. Near the rear of the machine, a shaft 63 is mounted, and on it rides a loose sleeve 65, from a flange of which project horizontal pins 66, 67, a recess 68 also being formed in the front of the sleeve. The pins project through slots in a wheel 69 loosely mounted on the shaft 63. Another wheel 70 is keyed to the shaft 63 in front of the wheel 69, and has two or more slots which are of different dimensions and receive the front ends of the pins 66, 67. A spring-controlled lever 74 works on a pivot 73, the upper end of the lever having two teeth 75, 85, adapted to engage the teeth of the wheels 69, 70. A toothed wheel 77 keyed on the shaft 63 gears with a rack 78 on the carriage. A disc 80 is keyed on the shaft and is provided with a pin 81, against which presses the end of a spiral spring, the other end of the spring bearing against a pin 83 projecting from the sleeve 65. The bearing of the pivot 73 is rigidly connected with a rail 84 arranged below the levers. On each depression of a key, the rail 84 is depressed and the lever 74 is tilted so that its tooth 75 releases the wheel 69. while its tooth 85 engages with the wheel 70. The sleeve and wheel 69 are then rotated by the spring until the end of the pin 66 abuts against the end of its slot in the wheel 70. When the key is released, the wheel 69 is locked and the wheel 70 is released, so that the shaft 63 is rotated by the carriage spring until the other end of the slot comes against a pin, the carriage being simultaneously advanced by the wheel 77 and rack 78. In order to change the spacing, the sleeve 65 is shifted to insert the pin 67 in its slot in the wheel. The inking-ribbon is guided over two small rollers in front of the paper cylinder, and over two larger guide-rollers, the axle of one of which may be adjusted to regulate the tension of the ribbon. The other roller is mounted in a casing in which is also mounted a frame containing two other rollers, one of which inks the ribbon, the other removing superfluous ink. The axle of the frame may be brought near to or away from the ribbon, being held in either position by a spring catch.