GB521027A - Improvements in letter spacing mechanism for typewriting machines - Google Patents

Improvements in letter spacing mechanism for typewriting machines

Info

Publication number
GB521027A
GB521027A GB3276138A GB3276138A GB521027A GB 521027 A GB521027 A GB 521027A GB 3276138 A GB3276138 A GB 3276138A GB 3276138 A GB3276138 A GB 3276138A GB 521027 A GB521027 A GB 521027A
Authority
GB
United Kingdom
Prior art keywords
pivot
carriage
rack
arm
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3276138A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Royal Typewriter Co Inc
Original Assignee
Royal Typewriter Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR846602D priority Critical patent/FR846602A/fr
Priority to US161514A priority patent/US2196437A/en
Application filed by Royal Typewriter Co Inc filed Critical Royal Typewriter Co Inc
Priority to GB3276138A priority patent/GB521027A/en
Publication of GB521027A publication Critical patent/GB521027A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00Character- or line-spacing mechanisms
    • B41J19/18Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/60Auxiliary feed or adjustment devices
    • B41J19/64Auxiliary feed or adjustment devices for justifying

Abstract

521,027. Typewriters. CARPMAEL, M. H. (Royal Typewriter Co., Inc.). Nov. 10, 1938; No. 32761. [Class 100 (iv)] Letter-spacing mechanism.-To provide for typing justified lines, the feed-rack is moved longitudinally of the carriage, during letterspacing, by means of a lever which is fulcrummed on the framework and pivotally connected to the carriage and feed-rack at spaced points, adjusting-means, operable in any position of the carriage, being provided for varying the distance between the points to adjust the letter-spacing movement. The mechanism shown in Figs. 1 and 4 comprises a rack 9 which co-operates with the escapement-pinion 23 and is secured to a bail 10 having arms 11, 12 mounted for pivotal and laterial movement on pins 13, 14 secured to the carriage B. The rack is held in engagement with the escapement-pinion by spring-urged yokes 15, 16 which are pivoted on the pins 13, 14 and have cross-pins 20 engaging the arms 11, 12. The rack 9 is pivoted to a slotted link 31 which is guided by a pin 34 on a bracket 30 secured to the carriage. A lever 37, having a slot 40 engaging a pin 38 on a stationary bracket 29, is formed at the front with spaced arms 41, 42, the arm 41 having a slot 43 which engages a pin 44 on the link 31. The arm 42 is connected by a pivot 51 to a plate 45 having pins 47, 48 co-operating with slots 49, 50 in the bracket 30. Teeth 46 on the plate 45 co-operate with a pinion 54 on a shaft 53 which is mounted in the bracket 30 and a bracket 52, and is provided with a knob C. During each letter-spacing movement, the lever 37 is displaced and, unless the pivot 51 coincides with the pin 44, the link 31 advances the carriage relatively to the rack and thereby increases the letter-spacing movement, the increment being determined by the position of the pivot 51 relatively to the pin 44. A drum 55, secured to the shaft, is provided with circumferential scales a ... d for use when typing justified lines of 5, 6, 7, and 4 inches width respectively. A scale-pointer 62 is formed on an arm 60 connected by a pivot 59 to. an arm 56: which is pivoted at 58 to the bracket 52. The arm 56 is formed with a pointer 71 which is set with reference to marks 67 ... 70 formed on a plate 63 and arranged at the same distance apart as the scales a ... d. The knob C and associated parts, and the pointers are locked in adjusted position by engagement of the pivot 59 with one of a series of holes formed in a drum 72 secured to the shaft 53, the arm 56 being sprung laterally to disengage the pivot. In operation, the pointer 61 is moved into register with the scale a ... d corresponding to the required line-length, and the knob C is turned to bring into register with the pointer the scalenumber corresponding to the number of spaces in the line-deficit, this number having been determined by typing a trial line. The line is then re-typed, the spaces 1 being increased in the above-described manner to produce a justified line of the required length. If the zero-graduation of the scales registers with the pointer, the pivot 51 coincides with the pin 44, and normal spacing is effected.
GB3276138A 1937-08-28 1938-11-10 Improvements in letter spacing mechanism for typewriting machines Expired GB521027A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR846602D FR846602A (en) 1938-11-10
US161514A US2196437A (en) 1937-08-28 1937-08-28 Typewriting machine
GB3276138A GB521027A (en) 1938-11-10 1938-11-10 Improvements in letter spacing mechanism for typewriting machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3276138A GB521027A (en) 1938-11-10 1938-11-10 Improvements in letter spacing mechanism for typewriting machines

Publications (1)

Publication Number Publication Date
GB521027A true GB521027A (en) 1940-05-09

Family

ID=10343611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3276138A Expired GB521027A (en) 1937-08-28 1938-11-10 Improvements in letter spacing mechanism for typewriting machines

Country Status (2)

Country Link
FR (1) FR846602A (en)
GB (1) GB521027A (en)

Also Published As

Publication number Publication date
FR846602A (en) 1939-09-21

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