US3374874A - Selector segment setting device for teletype machines - Google Patents

Selector segment setting device for teletype machines Download PDF

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Publication number
US3374874A
US3374874A US505138A US50513865A US3374874A US 3374874 A US3374874 A US 3374874A US 505138 A US505138 A US 505138A US 50513865 A US50513865 A US 50513865A US 3374874 A US3374874 A US 3374874A
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US
United States
Prior art keywords
code bar
electromagnet
carrier
link
code
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 - Lifetime
Application number
US505138A
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English (en)
Inventor
Rekewitz Rudolf
Reier Richard
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.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
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Publication of US3374874A publication Critical patent/US3374874A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/18—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/16—Apparatus or circuits at the receiving end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/16—Apparatus or circuits at the receiving end
    • H04L17/18—Code selection mechanisms

Definitions

  • Code bar adjustment means in which the carrier for the code bar is vertically adjustable into at least three type group positions.
  • the code bar carrier in the one form of the invention is horizontally and vertically shiftable, and the adjustment mechanism for the code bar is mounted on a carriage which is shiftable horizontally with the code bar carrier.
  • the code bar is in the form of a segment of a circle and is adjustably mounted at its opposite ends on its carrier for movement generally conforming to the mean are of the code bar.
  • the actuator for adjusting the code bar is in the form of an electromagnet mounted on a carriage having an armature operating a bell crank lever pivoted to the carriage, intermediate its ends.
  • the bell crank has a vertical arm pivotally connected at its upper end to a coupling link, pivoted to the code bar intermediate the ends of the code bar with its longitudinal center line extending generally tangentially of the lower side of the code bar.
  • a spring connected to the code bar biases the code bar into one position of adjustment, while the armature moves the code bar into a second position of adjustment.
  • a second coupling link pivotally connected to the carrier in vertical alignment with the pivotal connection of the first coupling link to the carrier, and pivotally connected to the carriage for movement about the axis of the pivot of the bell crank.
  • This provides a parallel compensating linkage arrangement connected between the code bar carrier and code bar, compensating for vertical adjustment of the carrier into its various positions of adjustment and enabling the positions of the code bar to be maintained uniform and to be uniformly adjusted in the various positions of adjustment of the carrier.
  • the armature of the .electromagnet is directly connected to the first coupling link.
  • the second coupling link is connected to the casing for the electromagnet.
  • the electromagnet is mounted on a stationary support for horizontal movement, to compensate for angular movement of the first and second coupling links and the various elevations of the code bar carrier relative to the armature of the electromagnet.
  • a cam is provide-d on the free end of the second coupling link and the coupling link is guided intermediate its ends for longitudinal and pivotal movement.
  • the cam abuts an abutment surface extending from the casing for the electromagnet. This abutment surface is biased into engagement with the cam by a spring.
  • the shaft forming the pivotal axis of the bell crank controlling the coupling link also forms a pivotal axis for the second coupling lever.
  • a shifting memher acting with impact on a bell crank is supported on a structural part which, as compared with the code bar carrier, is vertically unshiftable.
  • the code bar carrier together with the adjusting member for the first coupling link, is arranged for movement along the line of the type-carrier carriage.
  • FIG. 1 illustrates an adjusting device for a code bar movable along the printing line and shiftable vertically into more than two working positions for type-group Change
  • FIG. 2 is a diagram illustrating the principle of the compensating device utilized.
  • FIGS. 3 and 4 illustrate modifications of the device according to FIG. 1.
  • the code bar carrier In teletype machines employing a movable code bar carrier 1, the code bar carrier is usually mounted for slidable movement along a guide tube 2, parallel to the printing line, to effect a type-group change, and is adjustable 'by raising and lowering said guide tube into three type-group positions.
  • the middle posit-ion is illustrated by solid lines in FIGURE 1.
  • the other two positions on each side of the middle position are illustrated by dot-dash rollers in FIGURE .1.
  • Movable parallel to the printing line and guide tube 2 on a guide rail 3 is an actuator carriage 4 mounted on two pairs of rollers 5 and 6. An axle 5 for the pairs of.
  • rollers 5 forms a pivotal axis for a bell crank 7, intermediate the ends of the bell crank, which serves as a transfer lever between the outer end of an armature 8 of an electromagnet '9 and a coupling link 10.
  • Said electromagnet is suitably mounted on the carriage 4 for horizontal movement therewith.
  • the coupling link 10 is pivotally connected to the upper end of the vertical arm of the bell crank 7 at one end and to a .code bar 11 at its opposite end.
  • the center line of the coupling link 10 is generally tangential to the arc of travel of the code bar 11 and is pivotally connected to the code bar 11 intermediate the ends thereof, to move said code bar into one of its working positions upon pivotal movement of bell crank 7, actuated by extensible movement of the armature 8 with respect to the electromagnet 9.
  • a tension spring 12 is connected to the code bar 11 to bias the code bar into a second position of adjustment, shown in FIGURE 1 of the drawings as being a left hand working position, when the electromagnet 9 is deenergized.
  • code bar 11 be in exactpositions of adjustment in the various positions of elevation of the code bar carrier 1, in order that locking teeth 11 of said code bar carrier may be positioned in the proper blocking positions with respect to pull rods 14 of the type levers (not shown).
  • pull rod 14 only is shown in FIGURE 1 in order to simplify the disclosure, although it should be understood that individual pull rods are provided for each type lever and generally correspond to the blocking teeth of the code bars.
  • a second coupling link 13 is pivoted to the code bar carrier 1 with its pivot axis disposed beneath and in vertical alignment with the axis of connection of the coupling link 10 to the code bar 11.
  • the second link 13 is pivotally connected at its end opposite the code bar carrier 1 to the axle 5 which serves as a pivot for the bell crank lever 7.
  • the links and 13 are respectively pivotally connected to the upper ends of the bell crank lever 7 and to the axle 5 to extend in parallel relation with respect to each other in all vertical positions of adjustment of the code bar carrier with respect to the bell crank 7.
  • the links 10- and 13 thus form a parallel guide for the code bar, with the longitudinal axis of the link 10 extending generally tangential to the effective are of adjustment of the code bar 11, shown in FIGURE 1 as generally corresponding to the arcuate lower side of said code bar 11.
  • the point of connection of the bell crank lever 7 to the link 10 likewise moves in generally parallel relation with respect to movement of the coupling links 10 and 13.
  • the code bar carrier 1 is vertically adjustable in a direction perpendicular to the guiding surface of the guide 3 for a type-group change, that the second coupling link 13 corrects the position of the axle 5 forming the pivotal axis of the bell crank lever 7.
  • a second electromagnet (not shown) may be disposed on a stationary portion of the machine.
  • FIGURES 3 and 4 show a modified form of the invention in which the code bar carrier 1 is vertically adjustable into more than two positions and the code bar 11 is adjustably moved into its right-hand end position by a coupling link 10.
  • a tension spring 12 connected between the code bar and code bar carrier in the same manner as shown in FIGURE 1 is provided to bias the code bar carrier into its left-hand end position of adjustment.
  • coupling link 10 is connected to the code bar 11 in the same manner and relationship as shown in FIGURE 1.
  • the end of the coupling link 10 opposite the code bar 11 is in direct alignment with and is pivotally connected to a draw armature 17 movable parallel to the printing line, in opposition to the force of the spring 12.
  • the draw armature 17 is retractible within an electromagnet 18, upon energization of said electromagnet.
  • the electromagnet 18 is mounted for slidable movement in a horizontal direction for a distance sufficient to compensate for adjustment of the code bar carrier 1 in its various positions of vertical adjustment on guide rods 19 and 20, extending from a stationary structural part 22 of the apparatus.
  • a coupling link 13 is pivotally connected to the code bar carrier 1 with its axis of pivotal connection to said code bar carrier in vertical alignment with the axis of pivotal connection of the coupling link 10 to the code bar 11.
  • the opposite ends of the coupling link 13 is pivotally connected to the electromagnet 18, to adjusta'bly move said electromagnet along the guide rods 19 and 20 as the code bar carrier 1 is shifted into its vertical positions of adjustment, upward or downward of the intermediate positions of said code bar carrier illustrated in FIGURE 3 of the drawings.
  • This arrangement like the arrangement shown in FIGURE 1, assures the code bar 11 will be maintained in the exact same end positions of adjustment with respect to code bar carrier 11 in the various positions of vertical adjustment of said code bar carrier.
  • FIGURE 4 The form of the invention illustrated in FIGURE 4 is very much like that of FIGURE 3 except the electromagnet 18 has a part 18 depending from its casing.
  • the part 18 extends downwardly of the guide rod 20 and has a right angled lower end portion 18*, extending toward and engaging a cam 23 on the free end of the link 23.
  • the end of the right angled end portion 18 extending from the part 18 toward the cam 23*, is biased into engagement with the face of said cam by a compression spring 21, shown as seated on the structural part 22 at one end and on the adjacent end of the electromagnet 18 at its opposite end.
  • the link 10 is connected between the code bar 11 and the armature 17 of the electromagnet 18 in the same manner as in FIGURE 3.
  • the electromagnet 18 is also slidably guided for movement along the guide rods 19 and 20' under the control of the cam 23*.
  • the link 23 has a guide slot 23 extendingtherealong, through which extends a pivot pin 24, mounted on the structural part 22.
  • the coupling link 23 will be angularly moved about and slidably moved along the pivot pin 24. Angular movement of the link 23 will thus cam the electromagnet 18 to maintain the coupling link in proper relation with respect to the code bar 11, as the code bar carrier 1 is moved into its various positions of vertical adjustment.
  • the construction shown thus assures uniform adjustment of the code bar 11 as the code bar carrier is vertically adjusted into any of its three type-group positions.
  • the face of the cam 23 may be varied in curvature to accurately compensate for the angular positions taken by the links 10 and 23, as the code bar carrier is adjusted into its type-group positions.
  • a code bar generally arcuate in form and adjustably mounted on said code bar carrier at its ends, for adjustment along a uniform arc into blocked positions with preselected type levers,
  • a first coupling link pivotally connected to said code bar intermediate the ends thereof and extending therefrom, substantially tangential to the arc of travel thereof
  • control member operatively connected to said coupling link and operable to shift said coupling link and code bar against the bias of said biasing means
  • control member maintaining the longitudinal axis of said coupling link substantially tangential to the lower surface of said code bar when in a mean operating position, to efiect -a selected type group change
  • control means includes a bell crank movable about a pivotal axis disposed intermediate the ends of said bell crank,
  • said bell crank has vertical and horizontally extending lever arms the vertical lever arm of which is pivotally connected to said first control link, and
  • operating means are provided for said bell crank and have engagement with said horizontal lever arm of said bell crank to shift said code bar into a selected operative position.
  • code bar carrier is mounted for horizontal movement along the printing line
  • control member is mounted for horizontal movement with the code bar carrier.
  • control member comprises an electromagnet having an armature operatively connected with said first control link
  • fixed guide members extend alOng opposite sides of said electromagnet
  • abutment means extends from said electromagnet, for engagement with said cam
  • said cam varies the position of said electromagnet in accordance with the angular position of said second link, to maintain said first link in the same general relative operative position with respect to said code bar regardless of the position of adjustment of said code bar carrier.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Electromagnets (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
US505138A 1964-12-11 1965-10-22 Selector segment setting device for teletype machines Expired - Lifetime US3374874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES94576A DE1224770B (de) 1964-12-11 1964-12-11 Waehlsegment-Einstellvorrichtung fuer Fernschreibmaschinen

Publications (1)

Publication Number Publication Date
US3374874A true US3374874A (en) 1968-03-26

Family

ID=7518784

Family Applications (1)

Application Number Title Priority Date Filing Date
US505138A Expired - Lifetime US3374874A (en) 1964-12-11 1965-10-22 Selector segment setting device for teletype machines

Country Status (5)

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US (1) US3374874A (da)
DE (1) DE1224770B (da)
DK (1) DK116881B (da)
FR (1) FR1454292A (da)
GB (1) GB1086440A (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517124A (en) * 1967-02-27 1970-06-23 Siemens Ag Device for adjusting a type carrier in teletype or data teletype machines
US5646237A (en) * 1995-08-15 1997-07-08 Eastman Chemical Company Water-dispersible copolyester-ether compositions

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US722291A (en) * 1902-06-02 1903-03-10 Arthur C Ferguson Type-writer.
US847415A (en) * 1905-06-14 1907-03-19 Harvey A Moyer Type-writing machine.
US966956A (en) * 1909-05-29 1910-08-09 Union Typewriter Co Type-writing machine.
US984744A (en) * 1906-07-25 1911-02-21 Alexander T Brown Type-writing machine.
US1034154A (en) * 1909-02-25 1912-07-30 Union Typewriter Co Type-writing machine.
US1904164A (en) * 1930-07-11 1933-04-18 Teletype Corp Signaling system and apparatus therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US722291A (en) * 1902-06-02 1903-03-10 Arthur C Ferguson Type-writer.
US847415A (en) * 1905-06-14 1907-03-19 Harvey A Moyer Type-writing machine.
US984744A (en) * 1906-07-25 1911-02-21 Alexander T Brown Type-writing machine.
US1034154A (en) * 1909-02-25 1912-07-30 Union Typewriter Co Type-writing machine.
US966956A (en) * 1909-05-29 1910-08-09 Union Typewriter Co Type-writing machine.
US1904164A (en) * 1930-07-11 1933-04-18 Teletype Corp Signaling system and apparatus therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517124A (en) * 1967-02-27 1970-06-23 Siemens Ag Device for adjusting a type carrier in teletype or data teletype machines
US5646237A (en) * 1995-08-15 1997-07-08 Eastman Chemical Company Water-dispersible copolyester-ether compositions

Also Published As

Publication number Publication date
GB1086440A (en) 1967-10-11
DK116881B (da) 1970-02-23
DE1224770B (de) 1966-09-15
FR1454292A (fr) 1966-07-22

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