US3288263A - Carriage long run controlling device for typewriters and like machines - Google Patents

Carriage long run controlling device for typewriters and like machines Download PDF

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Publication number
US3288263A
US3288263A US341394A US34139464A US3288263A US 3288263 A US3288263 A US 3288263A US 341394 A US341394 A US 341394A US 34139464 A US34139464 A US 34139464A US 3288263 A US3288263 A US 3288263A
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United States
Prior art keywords
carriage
dogs
long run
spacing
interval
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Expired - Lifetime
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US341394A
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English (en)
Inventor
Salto Rinaldo
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Olivetti SpA
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/02—Character- or line-spacing mechanisms with retarding devices, e.g. brakes

Definitions

  • This invention relates to a typewriter or like machine having a carriage and a spacing mechanism for letter spacing said carriage one or more small intervals of spacing, said mechanism comprising an escapement member having teeth spaced apart by an integral multiple of said interval and normally engaged by a number of independent escapement dogs corresponding to said multiple and mutually spaced apart one interval plus an amount equal to an integral number of said multiple. More particularly, the invention relates to a carriage long run controlling device comprising means moveable from a rest position to an operated position to disengage said dogs from said member for conditioning said carriage for a long run.
  • the escapement member is provided with teeth spaced apart a first multiple of the interval of spacing, which is different than a second multiple predetermined for temporarily arresting the carriage and comprises a set of differently sized escapement dogs. Therefore, this device requires means for previously grouping the escapement dogs before reengaging same with the escapement member, whereby this device is intricate too.
  • the primary object of this invention is to provide a carriage long run controlling device which is inexpensive and reliable in operation.
  • Another object is to provide a device for arresting the carriage according to a multiple of the interval of spacing equal to the pitch of the escapement member.
  • a further object is to provide a device, wherein after a long run the carriage is restored under the control of the escapement mechanisms when a step by step movement of the carriage is effected.
  • a carriage long run controlling device comprising in combination means movable from a rest position to an operated position to disengage said dogs from said member for conditioning said carriage for a long run, said means being so shaped as to disengage one of said dogs after being moved through a stroke longer than the stroke required for disengaging the other dogs, and means operable at the end of said long run for temporarily returning said movable means from said operated position to an intermediate position to cause said member to be reengaged by said one dog only, whereby said member is arrested according to said multiple of interval.
  • FIG. 1 is a partial plan view of a carriage long run controlling device embodied in an electric typewriter having a variable spacing mechanism
  • FIG. 2 is a partial sectional view taken on the line IIII of FIG. 1.
  • the carriage long run controlling device is embodied in an electric typewriter having a variable spacing mechanism of the kind described in the applicants copenda ing application, Serial No. 321,221, filed November 4, 1963, which therefore will be described hereinafter compendiously.
  • the numeral 131 generically indicates the conventional paper carriage of the typewriter, which is normally urged leftwards by a spring not shown and is adapted to be letter spaced under the control of a variable spacing mechanism according to one or more small intervals of spacing.
  • Said spacing mechanism comprises an escapement member 132 having teeth spaced apart by an integral multiple of the interval of spacing, namely according to three intervals.
  • the member 132 is formed of a rack secured to the carriage 131 and normally engaged by a number of independent escapement dogs corresponding to said multiple, that is a number of three dogs 133, 134 and 135, each one fulcrumed on an individual pivot 136 of a slide 137 and connected thereto by an individual spring 138.
  • the three dogs 133, 134 are mutually spaced apart one interval plus an amount equal to an integral number of said multiple of spacing, in a manner that the rack 132 with one of its teeth transversely contacts always one of said dogs.
  • the slide 137 is slidably mounted on two pins 139 and 140 and is normally urged by the carriage spring, through the rack 132 and the dogs 133, 134 and 135, to contact the pin 139 against the urge of its spring 141. Furthermore, the slide 137 is provided with a projection 142 normally latched by a latch 143 pivoted at 144 and urged counterclockwise by a spring 145. Finally, the slide 137 is provided with a projection 172 adapted to cooperate with a stepped sector 171 settable in a variable angular position by the various type actions not shown in the drawing, to select the spacing corresponding to the character to be printed.
  • a shaft 146 (FIG. 2) is rocked counterclockwise in a known manner.
  • a number of three equal arms 147, 148 and 149 (FIG. 1) secured to the shaft 146 disengages the dogs 133, 134 and 135 from the rack 132, while another arm 150 equal to the above three arms unlatches the latch 143 from the projection 142 of the slide 137.
  • a set of retaining dogs not shown temporarily engage the rack 132.
  • the slide 137 is now shifted rightwards by the spring 141 until arrested by the sector 171.
  • the shaft 146 is restored clockwise together with the arms 147, 148, 149 and 150.
  • Now the dogs 133, 134 and 135 reengage the rack 132 and are returned leftwards together with the slide 137 until the projection 142 is relatched by the latch 143.
  • the typewriter is provided with a carriage long run controlling device comprising means movable from a rest position to an operated position to disengage the three dogs 133, 134 and 135 from the rack 132 for conditioning the carriage 131 for a long run.
  • Said movable means are formed of a number of three arms 225, 226 and 227 secured to a shaft 228 (FIG. 2) rockably mounted on the machine frame.
  • the arm 225 is so shaped as to disengage the corresponding dog 133 after a counterclockwise stroke longer than the stroke required by the other arms 226 and 227 (FIG. 1) to disengage the correspond ing dogsl34 and-135.
  • the arm 227 (FIG. 2) is longer than the other two arms and is adapted to cooperate with a universal bar 229 fulcrumed at 231 on the carriage 131 and normally urged by a spring 232 to contact a pin 233 secured to the carriage.
  • the universal bar 229 is provided with a manually operable arm 234 forming the conventional carriage release member.
  • a pin 238 normally urged by a spring 236 to contact a shoulder 2370f a pawl 239 pivoted on a lever 240 and connected thereto by a spring 241.
  • the lever 240 is pivoted at 73 on the machine frame and is urged by a spring 242 to contact a cam 243 adapted to be rotated counterclockwise by a continuously rotating shaft 70 through a clutch generically indicated by the numeral 244.
  • This clutch shown in FIG. 2 in its angular rest position, is adapted to be engaged by known means at the depression of the conventional tabulating key, as well as at the depression of the carriage return key.
  • the clutch 244 is further adapted to be temporarily disengaged after a predetermined rotation, namely 130 degrees by a normally ineffective lug 254 of a lever 255 pivoted at 256 and connected by a link 257 to the pin 238.
  • the long run controlling device comprises means operable at the end of a long run for temporarily returning the arms 225, 226 and 227 from the operated position to an intermediate position to cause the rack 132 to be reengaged by one of the three dogs only.
  • said operable means comprise a member 258 adapted to be moved leftwards in FIG. 2 in a known manner at the end of the tabulating run under the control of the conventional tabulating counterstop, as well as at the end of the carriage return under the control of the conventional carriage return counterstop.
  • the member 258 in turn is adapted to cooperate with a projection 259 of the pawl 239.
  • said operable means comprise a means for intercepting the return movement of the arms 225, 226 and 227, said means being formed of a latch 247 pivoted at 248 and urged by a spring 249 to normally contact a bent lug 246 of an arm 245 secured to the shaft 228.
  • the latch 247 is provided with a slot 250 entered by one end of a link 251 connected at the other end to an arm 252 secured to the shaft 146.
  • a slide 199 adapted to be shifted rightwards at the depression of a conventional back space key as described in the cited patent application, is provided with a pin 253 adapted to cooperate with the latch 247.
  • the long run controlling device operates as follows.
  • the clutch 244 is engaged and the cam 243 is rotated to rock the lever 240 clockwise.
  • the lever 240 through the pawl 239 rock-s counterclockwise the arm 235, which through the link 257 rocks the lever 255 clockwise thus placing the lug 254 in a position effective to disengage the clutch 244.
  • the cam 243 is thus arrested after being rotated of 130 degrees and the lever 240 remains rocked clockwise.
  • the arm 235 rocks counterclockwise the shaft 228 together with the arms 225, 226, 227 and 245.
  • the three arms 225, 226 and 227 thus disengage the corresponding dogs 133, 134 and 135 (FIG. 1) from the rack 132, while the lug 246 (FIG. 2) of the arm 245 releases the latch 247, which is rocked clockwise by the spring 249.
  • the carriage 131 has been thus released and in the case of a tabulating run it is moved leftwards by the proper spring, whereas in the case of a carriage return it is moved rightwards by the electric motor, in a known manner.
  • the carriage stop encounters the tabulating counterstop, which displaces the member 258 leftwards.
  • the left margin stop encounters the corresponding counterstop, which displaces the member 258 leftwards.
  • the member 258 when so displaced engages the projection 259 and rocks the pawl 239 counterclockwise.
  • the pawl 239 disengages thus the shoulder 237 from the pin 238, whereby the spring 236 returns the arm 235, together With the shaft 228 and the arms 225, 226, 227 and 245, clockwise toward the rest position, until the lug 246 is temporarily arrested by the latch 247 in the intermediate position.
  • the arm 235 through the link 257 rocks now the lever 255 counterclockwise, whereby the lug 254 causes now the clutch 244 to be reengaged.
  • the cam 243 is thus rotated again counterclockwise to return to the rest position shown in the drawing, and causes the spring 242 to restore the lever 240 counterclockwise.
  • the arm 225 In the intermediate position the arm 225, due to its shape, causes the dog 133 (FIG. 1) to reengage the rack 132 while the arms 226 and 227 are unable to cause the corresponding dogs 134 and to reengage the rack.
  • the carriage At the end of a long run, the carriage is thus arrested always by the dog 133 according to the multiple of interval of spacing corresponding to the number of escapemerit dogs, namely according to three intervals, whereby the carriage may be correctly arrested.
  • the long run of the carriage may also be controlled by hand through the arm 234 (FIG. 2).
  • the universal bar 229 engages the arm 227, which is rocked counterclockwise together with the shaft 228 and the arms 225, 226, 235 and 245, whereby the dogs 133, 134 and 135 (FIG. 1) are disengaged from the rack 132 as in the above described case.
  • the arm 234 (FIG. 2) is released, the bar 229 releases the arm 227, but the lug 246 is arrested in the intermediate position by the latch 247, and the rack 132 is reengaged by the sole dog 133.
  • the lug 246 will be released by the latch 247 when a step by step movement of the carriage is effected.
  • the step by step movement may be represented by a letter spacing which is controlled in the manner above described by rocking the shaft 146 counterclockwise.
  • the arm 252 through the link 251 rocks the latch 247 counterclockwise thus releasing the lug 246.
  • the arm 245 together with the shaft 228 and the arms 225, 226, 227 and 235 are now restored by the spring 236, while the dogs 133, 134 and 135 (FIG. 1) remain under the control of the arms 147, 148 and 149 of the shaft 146.
  • the step by step movement of the carriage may also be represented by a back space controlled by the slide 199 (FIG. 2).
  • the slide 199 In fact when the slide 199 is moved rightwards the pin 2 53 engages the latch 247 which is rocked counterclockwise and releases the lug 246 as in the case of the letter spacing.
  • a carriage long run controlling device comprising in combination:
  • a carriage long run controlling device comprising in combination:
  • a carriage long run controlling device comprising in combination:
  • a carriage long run controlling device comprising in combination:
  • a carriage tabulating run controlling device comprising in combination:
  • a carriage return controlling device comprising in combination:
  • a carriage long run controlling device comprising in combination:

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  • Character Spaces And Line Spaces In Printers (AREA)
  • Common Mechanisms (AREA)
US341394A 1963-02-07 1964-01-30 Carriage long run controlling device for typewriters and like machines Expired - Lifetime US3288263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT252863 1963-02-07

Publications (1)

Publication Number Publication Date
US3288263A true US3288263A (en) 1966-11-29

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ID=11103120

Family Applications (1)

Application Number Title Priority Date Filing Date
US341394A Expired - Lifetime US3288263A (en) 1963-02-07 1964-01-30 Carriage long run controlling device for typewriters and like machines

Country Status (5)

Country Link
US (1) US3288263A (en&quot)
BE (1) BE643325A (en&quot)
CH (1) CH405371A (en&quot)
GB (1) GB1056245A (en&quot)
SE (1) SE315299B (en&quot)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441119A (en) * 1965-05-25 1969-04-29 Olympia Werke Ag Pawl release mechanism
US3455429A (en) * 1965-06-01 1969-07-15 Olympia Werke Ag Escapement mechanism for a carriage
US4029191A (en) * 1975-05-01 1977-06-14 Angelina M. Klem Variable spacing printing apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547449A (en) * 1948-07-08 1951-04-03 Ibm Proportional spacing mechanism for typewriters
US2753973A (en) * 1953-03-12 1956-07-10 Ibm Justifier for typewriters
US2818959A (en) * 1954-11-19 1958-01-07 Ibm Pawl control
US2905303A (en) * 1955-12-29 1959-09-22 Ibm Escapement pawl control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547449A (en) * 1948-07-08 1951-04-03 Ibm Proportional spacing mechanism for typewriters
US2753973A (en) * 1953-03-12 1956-07-10 Ibm Justifier for typewriters
US2818959A (en) * 1954-11-19 1958-01-07 Ibm Pawl control
US2905303A (en) * 1955-12-29 1959-09-22 Ibm Escapement pawl control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441119A (en) * 1965-05-25 1969-04-29 Olympia Werke Ag Pawl release mechanism
US3455429A (en) * 1965-06-01 1969-07-15 Olympia Werke Ag Escapement mechanism for a carriage
US4029191A (en) * 1975-05-01 1977-06-14 Angelina M. Klem Variable spacing printing apparatus

Also Published As

Publication number Publication date
GB1056245A (en) 1967-01-25
CH405371A (it) 1966-01-15
BE643325A (en&quot) 1964-05-29
SE315299B (en&quot) 1969-09-29

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