US2562825A - Receiver for teleprinters - Google Patents

Receiver for teleprinters Download PDF

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Publication number
US2562825A
US2562825A US894A US89448A US2562825A US 2562825 A US2562825 A US 2562825A US 894 A US894 A US 894A US 89448 A US89448 A US 89448A US 2562825 A US2562825 A US 2562825A
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United States
Prior art keywords
wiping
lever
receiver
locking
shaft
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
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US894A
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English (en)
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Segaar Cornelis
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Individual
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Individual
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Publication of US2562825A publication Critical patent/US2562825A/en
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    • 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
    • H04L17/26—Apparatus or circuits at the receiving end using aggregate motion translation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds

Definitions

  • the present invention relates to a type printing telegraph receiver, and more particularly to a receiver in which the signal to be printed is determined by the angle swept-through by a positioning shaft, which is provided with a typewheel'.
  • a number of locking levers equal to the number of limiting discs, are positioned in timed se quence under the control of the code elements of the received signal and are engaged with the stops of the relevant limiting discs, so as to selectively permit the positioning shaft and the type wheel to rotate about fractions of a revolution, such as one-half, one-quarter, one-eighth, and so on, or to prevent the positioning-shaft from rotating.
  • Anarrangement is known in which the looking levers corresponding to the 2-5th impulse of a signal element in the 5-unit code, are positioned in timed sequence under the direct control of the armature of the receiving magnet.
  • Such a direct control without application of intermediate wiping levers, involves the drawback that it is necessary to make use of locking levers carrying out two motions, viz. a rotation and a vertical translation. This results in marginal actions and furthermore great care is required in manufacturing these mechanisms, to adjust the many abutments of the levers in such a way, that the mentioned motions are carried out in a smoothand exact manner.
  • the type printing receiver according to the present invention avoids these drawbacks by the application of intermediate wiping levers, the number of which is equal to the number of signal elements. These wiping leverscooperate with a corresponding number of cam discs provided on the receiver shaft. As a result the two functions of wiping of the signal elements and looking. of the positioning shaft, are distributed in the arrangement according to, the invention to different levers, each of these levers carrying out only one kind of motions, that is to say rotations, whereby a simple construction is obtained which may be adjusted in a very easy way.
  • Fig. l shows the part of the receiving mechanism belonging to the first signal element
  • Figs. 2-5 represent those parts of the receiving mechanism which respectively belong to the 2nd- 5th signal element
  • Fig. 6 illustrates thereleasing mechanism of the positioning shaft, which is operated at the end of the last signal element
  • Fig. 7 is a perspective view of the assembled apparatus according to the present invention, some parts being omitted, for the sake of c1ear-- HESS.
  • Fig. 7 the device according to the present invention is adapted to work in afive-unit code.
  • Fig. 7 only two complete combinations of receiving magnet armatures, cam discs on thereceiver shaft, wipinglevers with spring-loaded .pawls, locking levers and limiting discs on the positioning shaft are shown; the complete device contains five .of these combinations, three of which, however, have been omitted in Fig. 7 for the sake of cleamess together with the framework of .the device.
  • the receiving magnet l' in the no-printing condition of the apparatus keeps the five armatures 4+6 operated against the operation of the five armature springs 1-1 I.
  • the receiving. magnet I has only been indicated in Fig. l.
  • The'typeprinting telegraph according to the example uses singleourrent signals. It is, however, easily possible'to equip a receiving magnet for double-current signals.
  • the first element of. a single-current signal, the so-called start-element; carries. no current '50 that the armatures 2-'-5 are released under the operation of the springs 1ll-',and"in a manner described in 'Modern Telegraphyby.A.
  • Each of these discs' is provided with a cam, which, when revolved, about at the middle of the relevant element of the signal moves the corresponding wiping lever to the left, -so that the'latter by means of the slanting side at the top approach the armature to the receiving magnet.
  • the right hand top part of the wiping lever moves a little past the left hand side ofa' cam provided at the lower side of the armature, in order to enable the armature, at a spacing signal element, to release and to lock therelevantwiping lever so that the latter'cannot fall back.
  • this signalelement is, however, a marking'element, i. e. carries a current
  • the wiping lever l9 after the wiping action falls back underneath the operated armature 2 into the shown position, whereby the pawl pushing against the pr j n th ri ht hand upper side of the locking lever 31, turns this lever to the right, the common pawl bar being pushed downward, after which the .relevantlock- .ing lever 31 islocked with the tooththat is projecting to the left, in the path of thecam of a disc 44 secured to a shaft43 common to all cam discs 49-49.
  • the typeprinting telegraph receiver according to the invention is preferably equipped with a typewheel (not shown) on the shaft 43. It is, however, also possible, to operate a basket with typehammers, starting from the shaft 43.
  • the sixth disc has only one cam having the diametrically opposite position to the camof the first disc 44.
  • the common pawl bar 50 is pushed so far downward by the relevant locking lever so thatlthe locking lever '42 ;(Fig. 6) owing to the operation of the-spring.
  • the shaft 43 now rotates until the cam of the disc 44 (Fig. 1) rests against the tip of the locking lever 31; which was operated under the control of the. first signal element.
  • the positioning shaft '43 of the typewheel under the control of the first signal-element of the signal can either or not make a half revolution according to the nature of the first signal element.
  • Under'control of the second signal element thelocking lever 38' (Fig. 2) is operated and is locked. by
  • the positioning'shaft 43 of the typewheel can either or not make revolution, while under control of the third, the fourth and the fifth signal element, respectively, /3, 5' and 1-1 revolution can be'made, so that by the combination of current carrying and no current carrying signal elements one spacing position and 31 marking positions result in the-positioning shaft 43 of the type'wheel.
  • the positioning shaft 43 it may be useful to choose another sequence of the mentioned r-cam discs 44-48 with relation to the signal ele- .ments.
  • the typewheei is securely positioned at the'end of the last signal element. Printing can follow at that moment, preferably in a manner described in U. S; patent application Serial No; 767,537, filed .August 6, 1947, now U. S. Patent'No. 2,551,693 of . May 8, 1951. After having printed the positioned signal the typewheel'is released by the mechanisni shown'in' Figure 6 and returned to the start- .ing position.
  • the wiping lever 24 (Fig. 6) is moved to'the left to move partly back directly afterwards.
  • the common pawl bar 50v is pushed down by means of the cam 58 and the wiping lever 53 (both shown in .dotted lines in the drawings) to such an extent that any wiping lever, which is still in the left hand position, and is locked in that position under the control of a spacing signal element by the corresponding armature in unattracted position, can spring back into the right hand position under the operation 01' the respective springs, whereby the corresponding locking levers can be operated just a while under the operation of the pawls but return directly in the shown position owing to the pawl bar 50 which is still lifted. Then the pawl bar 50 looks the looking lever 42, which determines the start position of the typewheel, the wiping lever 24 with the pawl 30 being enabled to return to the shown position.
  • a printing telegraph receiver comprising in combination, a receiver shaft; a plurality of wiping members arranged for cooperation with said receiver shaft so as to carry out motions from and into normal positions at predetermined times individual to each of said Wiping members; a positioning shaft; a plurality of locking members each being associated with one of said wiping members and arranged for cooperation with said positioning shaft at predetermined positions of said positioning shaft; and means for coupling each of said locking members to said associate wiping members only during part of the return motion of said associate wiping member into normal position.
  • a printing telegraph receiver comprising in combination, a receiver shaft; a plurality of wiping members arranged for cooperation with said receiver shaft so as to carry out motions from and into normal positions at predetermined times individual to each of said wiping members; a positioning shaft; a plurality of looking members each being associated with one of said wiping members and arranged for cooperation with said positioning shaft at predetermined positions of said positioning shaft; and springloaded members arranged, respectively, on said wiping members for coupling each of said locking members to said associate wiping members only during part of the return motion of said associate wiping member into normal position.
  • a printing telegraph receiver comprising in combination, a receiver shaft; a plurality of wiping members arranged for cooperation with said receiver shaft so as to carry out motions from and into normal positions at predetermined times individual to each of said Wiping members; a positioning shaft; a plurality of locking members each being associated with one of said wiping members and arranged for cooperation with said positioning shaft at predetermined positions of said positioning shaft; and springloaded pawls arranged, respectively, on said wiping members for coupling each of said locking members to said associate wiping members only during part of the return motion of said associate wiping member into normal position.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Devices (AREA)
  • Printing Methods (AREA)
US894A 1949-04-15 1948-01-07 Receiver for teleprinters Expired - Lifetime US2562825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL129619A NL64839C (en(2012)) 1949-04-15 1949-04-15

Publications (1)

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US2562825A true US2562825A (en) 1951-07-31

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US894A Expired - Lifetime US2562825A (en) 1949-04-15 1948-01-07 Receiver for teleprinters

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US (1) US2562825A (en(2012))
GB (1) GB656722A (en(2012))
NL (1) NL64839C (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944111A (en) * 1955-01-21 1960-07-05 Creed & Co Ltd Printing telegraph apparatus
US4254582A (en) * 1979-07-25 1981-03-10 Mcgee Michael H Electrically actuated overhead garage door opener assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1800973A (en) * 1928-04-05 1931-04-14 Siemens Ag Mechanical translating apparatus for printing-telegraph systems
US2192354A (en) * 1938-07-25 1940-03-05 Edward E Kleinschmidt Printing telegraph receiver
US2329580A (en) * 1941-07-25 1943-09-14 Int Standard Electric Corp Telegraph printer
US2358477A (en) * 1941-07-07 1944-09-19 Creed & Co Ltd Apparatus for selectively positioning typewheels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1800973A (en) * 1928-04-05 1931-04-14 Siemens Ag Mechanical translating apparatus for printing-telegraph systems
US2192354A (en) * 1938-07-25 1940-03-05 Edward E Kleinschmidt Printing telegraph receiver
US2358477A (en) * 1941-07-07 1944-09-19 Creed & Co Ltd Apparatus for selectively positioning typewheels
US2329580A (en) * 1941-07-25 1943-09-14 Int Standard Electric Corp Telegraph printer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944111A (en) * 1955-01-21 1960-07-05 Creed & Co Ltd Printing telegraph apparatus
US4254582A (en) * 1979-07-25 1981-03-10 Mcgee Michael H Electrically actuated overhead garage door opener assembly

Also Published As

Publication number Publication date
GB656722A (en) 1951-08-29
NL64839C (en(2012)) 1949-04-15

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