Patent GB-195622-A (GB)
Title: Improvements in or relating to stenographing machines
IPC: B41J3/26
Filed: 1923-03-21
Abstract: 195,622. Dold, V. C. March 29, 1922, [Convention date]. Stenographic type-wheel machines; keyboards. -In a machine for printing syllables having the component characters at equal intervals, by simultaneous depression of the appropriate keys, type-sectors are set by means of cams adapted to move adjacent cams laterally for the purpose of setting the syllable-characters on adjacent typesectors. There may be a number of groups of type-sectors adapted to print a line of syllables on a web which is periodically line-spaced, or one group of type-sectors may print syllables continuously on a horizontally-movable web. In the machine shown in Figs. 3 and 11, there are six groups of six type-sectors 19, adapted to print a line of six syllables, each of which may contain as many as six characters, on a web W which is periodically line-spaced and moved for impression. The keyboard is provided at the sides with keys 1 - - 10, and 17 - - 26, for initial and terminal consonants, and at the middle with keys 11 - - 16 for vowels, double characters, such as PB being employed to represent either of the component characters. The type-sectors 19 are arranged in six identical groups a - - f of six, the sectors 1 - - 6 in. each group bearing types corresponding to the keys 1 - - 9; 1 - - 10; 1 - - 11; 12 - - 15; and 17 - - 26; 13 - - 26; and 14 - - 26, respectively. The groups of type-sectors are brought successively into gear with groups g of toothed sectors 15, the sectors 1 - - 3, and 4 - - 6 of each group being connected by cross-bars 18 to corresponding sectors 15 operated by the keys 1 - - 11, and 18 - - 26 respectively, and the sectors 4 - - 6 being operated also by the keys 12 - - 17. The keys are each associated with a revoluble and laterally-movable cam or disc 11 which initially occupies the position shown in Fig. 11 with respect to the associated sectors 15. The sectors have fingers 15b for engaging arms 13 on 'the cams. The key-levers 2 impart differential movement to the cams by means of links 4 having rollers 6 engaging arms 12 on the cams, the rollers being released by engagement of a rod 9 with inclines 10 arranged at graded heights on the links. The cams are formed in one face with recesses receiving balls 44 mounted in laterallymovable supports 41, the turning of the cams causing the balls to ride, out of the recesses and thereby move the cams laterally, in opposition to springs, through a space equal to that between two associated sectors 15. The cams to the left and right of an abutment 45" move to the left and right respectively. In printing a syllable, the keys representing the characters phonetically a.re depressed simultaneously, and the associated cams are thereby turned, some of the cams being also moved laterally, through one or two spaces, into register with the second or third of the associated sectors 15. On completion of the lateral movement, the arms 13 engage the fingers 15b and turn the sectors 15, the type-sectors being thereby set to print the syllable. By arranging the cams to move laterally, the keys are enabled to set a syllable, containing from two to six characters, on successive type-sectors, gaps between the characters in a syllable being thereby avoided. The groups a - - f of type-sectors are brought successively into engagement with the groups of sectors 15. to print successive syllables, by means of a revoluble member 52 having six equidistant studs 53 arranged opposite the groups of type-sectors. The member is provided with a 'pinion 52<1> engaging a pinion 27 having a one-way connection, consisting of a helical spring, with a disc 27<11> which is connected by a link 25 to a universal bar 23 operated by the key-levers. When the key-levers are released, the universal bar is raised by means of springs, and the member 52 is turned a sixth of a revolution. Space-key actions.-Blank spaces representing a comma and a full stop are produced by depressing space-keys 35, 36 which act on the universal bar 23 and are adapted to turn the member 52 through one-sixth and two sixths of a revolution respectively. The space-keys are each arranged over two pairs of toggle-links 23<b> having a returning spring connecting the midpivots. Web feeding and guiding arrangements; platenimpression arrangements; line-spacing mechanism.-The web W passes from a supply roller 34 to a winding-roller 37, and is led over an im pression-roller 21 mounted on a rocking frame 21" operated by the universal bar 23. The winding-roller is mounted at the ends on ball-bearings, one of these being retractable to permit detachment of the winding-roller. The winding-roller is provided with a pinion gearing with a toothed wheel engaging a helical spring which permits rotation in one direction. The toothed wheel is mounted on an arm which can be rocked to release the pinion when it is required to withdraw the web for the purpose of reading the matter thereon. Line-spacing is effected by means of a sector 30 gearing with a pinion 32 having a oneway connection, consisting of a helical spring, with the winding-roller. The sector has a pin 31 engaging a. ratchet-wheel 29<1> connected to a pinion 29 which is operated periodically by a mutilated pinion 26 having a few teeth at opposite ends of a diameter. The pinion 26 has a one-way connection, consisting of a helical spring, with the disc 27<11> operated, as described above, by the universal bar 23. At each syllableprinting operation of the keys, the pinion 26 turns one-twelfth of a revolution, and after six syllable-printing operations the pinion 29 is advanced one tooth and the ratchet-wheel 29<1> acts on the sector 30 and causes the winding- roller to feed the web. Fnr separating the matter into pages, the ratchet-wheel is formed with a deep tooth, which, at the completion of a revolution, co-operates with the sector 30 to impart an increased feed to the web. The pinion 29 is provided with a pin 58 which initially engages a pivoted stop resting on a pin 59. The sector 30 can be operated by a handle 33 when it is required to re-wind the. web after it has been withdrawn from winding-roller.