US1780507A - Method of telegraphing in morse code and apparatus therefor - Google Patents

Method of telegraphing in morse code and apparatus therefor Download PDF

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Publication number
US1780507A
US1780507A US263040A US26304028A US1780507A US 1780507 A US1780507 A US 1780507A US 263040 A US263040 A US 263040A US 26304028 A US26304028 A US 26304028A US 1780507 A US1780507 A US 1780507A
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Prior art keywords
contact
series
morse
elements
movement
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Expired - Lifetime
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US263040A
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English (en)
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Schoemaker Richard Leon Arnold
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Individual
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/04—Apparatus or circuits at the transmitting end
    • H04L15/06—Apparatus or circuits at the transmitting end with a restricted number of keys, e.g. separate key for each type of code element
    • H04L15/08—Apparatus or circuits at the transmitting end with a restricted number of keys, e.g. separate key for each type of code element with a single key which transmits dots in one position and dashes in a second position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/04—Apparatus or circuits at the transmitting end

Definitions

  • the invention has the advantage of being ⁇ cheaper, thoughcavpable of more rapid transmission.
  • the invention is characterized by the lfollowing features (d) Th@ MOrse signs are producedby to and fro movement of a movable Contact member. (b) ⁇ Movement of the lfrom a zero position the outward andV return movement on, one sideof this zero position Vcausing the transmission of one or more'iots,
  • the ⁇ duration and uniformity of the movement of the contact member are func-r tionsof the distance from the axis of rota?y ytionto-tlie centre ofthe handle used for manipulating thecontact member, and they are also functions of the angle traversed when thehandle is moved from the initialv to the final position.
  • v (e) The closing ⁇ andopening of the circuit effected during thecontinuous movement cf the contact member, by means of a Contact passing' either over a contact striphaving ⁇ a series of insulating strips onitl (or vice-SQy versa) orovera correspondingly constructed contactbar.
  • the position ofthe handle at which the outward movement ends and the return" movement commences is notonly ocularly S5 observable but can also be indicated by touch and by the ear.
  • a 'scaleis provided for visual observationvand for control kby touch and by ear. It mayarrange springs or spring actuated members which. snap into depres- Vtransmitting station the Morse messages' transmitted.
  • the "apparatus may als@ be provided W0 ter combined with a recording device and a standby7 transmitter.
  • Fig. 1 is aperspective view of the Morse transmitter.
  • FIG. 2 isa plan vieil7 oi the transmitter shown in Fig. 1, with the handle removed for clearness.
  • F 3 is a cross section on the line U-U Y of rig. i.
  • V-V 5 is a plan view of the handle.
  • 6 is a perspective view of the Morse Fig.
  • ⁇ 'Fig 7 is aplan view, with the lever and -pointer omitted.
  • Fig. Sis aA cross section on the linel/V*VV Fig. 9 is a plan view of the lever and pointer.
  • Fig. 10 is a front elevation and ⁇ Y Fig. 11 a side elevation of a Contact ineinber for transmitting dots.
  • Fig. 12 shows a contact'member in iront f elevation for transmitting dashes.
  • Fig. l shows the movable element ior use with the contacts according to Figs. 10 to i2.
  • Fig. let is a cross section on the line x-ai fot Fig. 8.
  • j Fig. 15 is a cross section .on the line y-g/ *of Fig. 8.
  • fig.l 16 shows another modiiicationof the recorder in three projections.
  • The-principal elements of the'apparatus f are a Contact member manipulated by hand and a series of contacts over which this convtact'member is reciprocatable.
  • the movable contact somilrises a member f the member 7 having mounted therein a spring loaded pin 6.
  • This conductive member 7 is provided with a detachable handle 1, and is connected to the other pole by means of members 8 and balls 9, which maire contact with a conductor 10.
  • a scale 11 is provided, readingiroin 0 to 5 on each side of the Zero position in what may be called the positive and negative directions respectively.
  • the markings on the positive side of the scale indicate the positions at which the contact movement is reversed, for transmitting one or more dots with the proper intervals between them, and the markings onthe negativeside provide the same indication with regard to the dashes.
  • -A pointer 12 is fixed to che member 7, for indicating the position of the pin 6.
  • rllhe points oi reversal besides being oculeMy indicated as described, may also be indicated by touch and by ear.
  • a spring 13 is lined to the member 7, and snaps irto small depressions le' at the edge 15 oit the scale during the movement of r ⁇ ihe spring actuated pin 6 fulfills the same purpose by engaging the depressions disposed approximately half wayl betweenv the contacts 4.
  • the operators hand should pass though as small a path as possible when transmitting.
  • This v is most conveniently eiiected if'the wrist is stationaryand thehand pivots about the wrist in the manner of a pendlum.
  • the distance from the axis M to the handle 1 should be; about 10.5 cm.
  • the ⁇ maximum angle through which 4the contact member is swung should be from 37.5o to 40o.
  • the transmitter' is operated in f the fol* Ylowing manner.
  • the movable contactmember is moved by means of the handle from the centralopening Voi' the contact strip 2, i. e.
  • rthe pointer 12 is lirst'moved Vfrom the Zero position to position y2 (dot), then to position 2 (dash) ,Athen to position 2 (dot) andi'inally l skilled in telegraphy ymay transmitMor-se signs in the dark: 'Expert telegraphists are able to-transmit Morse signs withoutfsuclr as! si'stan'ce,y however .the invention has the ad-f l vantage that theturni-ng points areclearly indicated by vthe.'engagement offtheresilientv The modificationl according member inthe notchesl ⁇ u to Figsu vto 16y diiiers from'k that in Figs.
  • the contacts and theV contactstrip are l diiferently constructedfflnI the ⁇ modifica tion according yto Figs.6fto ⁇ 16 the movable contactis in the formy of a' contact cylinder 16 .rotatably mounted on the pin 17, the said cylinder closing; the circuit as it rolls overthe raised contacts 18 of .thevplungers .P(Fig. 13).
  • the pinor contact lever 17 vis pivotally connected at20 to the pointer19 (Figs. 8 and 9).
  • Theleverl is Idepressed byr a spring y 21,"and can-beadjustedfby a 'screw 22 provided with a lockfnut.
  • the pointer ..119 is swingable about the raxis-:23V fixed to A' the base24. ⁇ Y"
  • the row ofcontacts in thismodiiication is in the form of a Vgroup 'of contacts ora row of teeth.
  • the row of conl tacts consists ot a number of spring'plungers P, ⁇ wl1ose upper ends A or B are adapted for transmitting' 'dashes 'or :dots 1 respectively.
  • Each of these resilient contact members l consists of 'a plunger P, a lhousing 25 and 1a helical spring 26 ywithin the said housing.
  • The. movement of theplunger is restricted by the slot 291m it and thepi-n 28 iixed tothefhous# ing 2 5.
  • the lowerend of the'stem 30 of the plunger is provided with'a'sharp point 31.
  • each resilient contact has a vshallow notch approximately at-its centre, for indicating to the touch or to the vear ⁇ the turning movement.
  • the slightly conical roller 33 is used for points of each-swinging supporting the lever 19., This roller also serves as va Contact member for ra reserve transmitter-- For thisv purpose the 'roller 33 is guided over a contact-strip 34, which "may bev dented.' Thisoontactf strip is subdivided, as described above, ⁇ into contactrmaking and breaking portions, wherein the turningfpoints are disposed approximately at the centre of eachpo'rtion and coinc-ide'with the markings on thevscale. t
  • the turning mitter are made perceptible to the touch and the ear by thespring 12, provided with a roundedl headlengaging depressions in the scale. If, for any freason, the telegram, transmitted is Vnot recorded on the recording web below the transmitter, or if a breakdown occurs,.for example, as the result of failure of one of the plungers P, the reserve transmitter can be used.
  • a and B are all connected by means of contact bars 35.
  • Morse signs are transmitted in the modification according to Figs. 6 tov 16, by moving the lever 19 provided with a pointer l2 as described in connection with Figs. 1 to 5.
  • I-Iaving now particularly described and ascertained the nature of mysaid invention and in what manner the same Visto be performed, I declare that what I claim is l.
  • the method' ofl telegraphically transmitting messages in Morse code by the means of electric impulses in which 'all the symbols and characters ,ofthelvorse .alphabetas.
  • Well points .of this reserve trans# as every combination of the same are produced by moving onek single contact over one single path of Contacts or lthe reverse, and wherein movement of the movable contact in one direction from the starting position at Zero and then back to said starting position, transmits a dot or dots, with .the proper intervals, and its movement from the Zero position in the opposite direction, and backto the Zero position, transmits a dash or dashes, with the proper intervals, combinations of dots and dashes being produced by combinations of movements on both sides of the Zero position.
  • Apparatus for telegraphically transmitting messagesin Morse code comprising a i'ixed Contact unit embodying a series of spaced Contact elements, each of a length Ycammensuratc with the dot signal of the code,
  • Apparatus for telegraphically transmit- Yting messages in Morse :code comprising iixed contact unit embodying a fseriesof spaced contact elements each of a length commensurate with the dot signal of the code, and a series of spaced contact elements each of a length commensurate with the dash signal of the code, relatively adjacent elements or" .each series being spaced apart, the relatively adjacent end elements ofl the two series being mutually spaced, and a contact member including'a' resiliently supported Contact element, the said member being mounted for movement to bring the said contact element thereof to a Zero position within the space between the said relatively adjacent contact elements of the said two series and selectively into contact with one or more of the elements of either series.
  • ⁇ Apparatus for telegraphically transmitting messages in Morse code comprising a fixed Contact unit embodying. a series of spaced contact elements each of a length commensurate with the dot lsignal of the code.I and a series of spaced contact elements each of ⁇ a length commensurate with the dash signal of the code, relatively adjacent elements vof each series being spaced apart, the relaselectively into contact with one or morey thespace between the said relatively adjacent Contact elements of the said two series and 'mensurate with Athe dot signal of the code,

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measuring Leads Or Probes (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Input From Keyboards Or The Like (AREA)
US263040A 1927-05-20 1928-03-20 Method of telegraphing in morse code and apparatus therefor Expired - Lifetime US1780507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL290652X 1927-05-20

Publications (1)

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US1780507A true US1780507A (en) 1930-11-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US263040A Expired - Lifetime US1780507A (en) 1927-05-20 1928-03-20 Method of telegraphing in morse code and apparatus therefor

Country Status (5)

Country Link
US (1) US1780507A (enrdf_load_stackoverflow)
DE (1) DE518219C (enrdf_load_stackoverflow)
FR (1) FR654714A (enrdf_load_stackoverflow)
GB (1) GB290652A (enrdf_load_stackoverflow)
NL (1) NL20968C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB290652A (en) 1928-10-04
DE518219C (de) 1931-02-16
FR654714A (fr) 1929-04-10
NL20968C (enrdf_load_stackoverflow)

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