US2669602A - Printing telegraph apparatus - Google Patents

Printing telegraph apparatus Download PDF

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Publication number
US2669602A
US2669602A US306984A US30698452A US2669602A US 2669602 A US2669602 A US 2669602A US 306984 A US306984 A US 306984A US 30698452 A US30698452 A US 30698452A US 2669602 A US2669602 A US 2669602A
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United States
Prior art keywords
lever
paper
function
clockwise
spring
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Expired - Lifetime
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US306984A
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English (en)
Inventor
Salmon Reginald Dennis
Turner Frederick James Leslie
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.)
Creed and Co Ltd
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Creed and Co Ltd
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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
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/06—Tape or page guiding or feeding devices

Definitions

  • This invention relates to printing telegraph apparatus and in particular to a page printing telegraph receiver incorporating an answer back mechanism which is released in response to the receipt of a distinctive who are you signal combination to transmit the characteristic code number of the apparatus or of the station at which the apparatus is situated.
  • page printing telegraph apparatus comprising means operative in response to one or more distinctive signals of the first kind to move the paper into a predetermined position, means normally operative in response to a distinctive 5 ⁇ signal of a second kind to release an answerback transmitter and means operative when said second distinctive signal is received after said first distinctive signal and before the paper has been moved into its predetermined position to delay the release of said answer-back transmitter until the paper has been moved into said position.
  • FIG. 1 An embodiment of the invention as applied to a printing telegraph receiver is shown divided between Figs. 1 and 2 of the accompanying drawings. It is to be understood that the only parts of the receiver which have been shown are those material to the present invention. Other parts such as the supporting framework have been omitted in the interests of clarity. That part of the mechanism which is shown in Fig. 1 is mainly concerned with providing the form-feed facility while that shown in Fig. 2 is mainly concerned with the release of the answer-back transmitter.
  • the invention is applied to a pageprinting telegraph receiver of the type disclosed in British patent specification No. 620,682.
  • thesuccessively received code element of a signal combination are caused to set five storage members (assuming a five-unit code to be in operation) under the joint control of the receiving magnet and a selector cam sleeve released for rotation by the response of the magnet to the start element of the received signal combination.
  • the selector cam sleeve during its rotation releases a translator cam sleeve for rotation and a cam on this translator cam sleeve causes the settings of the five storage members to be transferred to a first set of five permutation members in the form of notched discs cooperating with radially disposed bell crank levers and a second set of five permutation members in the form of tiltable vanes co-operating with notched function levers.
  • the first set of permutation members acts in well known manner to select a character to be printed while the second set acts to select a desired function to be performed.
  • Reception of a form feed signal combination following the secondary shift signal combination causes the tiltable vanes such as I to take up a combinational setting which permits a spring 6 to rotate the form feed function lever 3 anticlockwise through a small are about its pivot I.
  • This movement of lever 3 causes a leftward movement of a horizontal lever 8 pivotally attached at 9 to the form feed lever.
  • Lever 8 is guided by a projecting pin It sliding in a slot in one arm of a bell crank lever H at present held stationary. This movement of lever 3 brings its left hand extremity into the path of a bail l2 fixed to a reciprocable shaft l3 (shown fragmentarily).
  • cam sleeve 23 is provided with a cam-shaped recess 24 in whichrests one end of a lever 25 freely mounted on a shaft 26.
  • Fixed to lever 25 is a second lever 21 also freely mounted on shaft 25 and connected by a link 28 to a lever 29 fixed to shaft I3 carrying bail i2
  • n arm of lever 35 is provided with an exte sion 31 supporting one end of a lever 38 pivotally attaendat 35 to a 'leverfttl at'fore'sent stationary.
  • a time 4! rotates lever 38 in a clockwise direction about pivot 39 until it comes into con- 'tatwithawertieal can 42 integral with hor'icontal bail lZ an shaft [3. At the instant this occurs shaft I3 is nearing th'e'end of its clock- "wise intim ted the point architect between lever ss ana bail 42 is just to the right or protio'n 43 formed ham lever 38.
  • lever 38 rotates clockwise it depresses extension 31 of threearmed lever-35 causing'the latter to rotate clockabout pivot 36 so that the step 35 is brought 'above the level of latching lever 33.
  • a segmental rack 44 nie'shing with a pinion 41s fixed to a short start v
  • lever 5cm rotate by a small amount about its pivot 5l'th'us extending a sp'r'i'figsz and bringing a hacked and 53 clear r alarm 54 ektended'from a four-armed lever 55 pivoted at 55;
  • Another-arm -5lof lever 59 carriesfa roller 53 as soon as arm 54 is freed from hooked end 53, a spring 59 rotates lever 55 anticlockwise about pivot 56 to bring roller 58 into contact with the periphery of cam '41.
  • cam 4'! begins to rotate back ina'clo'ckwise direction-from its 180 position. As it 'does so,
  • lever 55 to be rotated anti-clockwise about pivot 56.
  • a rod projecting from an arm 5! of lever acts on a bell crank lever 62 to rotate it clockwise about its pivot 63 and an extension 64 of lever 62 rotates another lever 55 about its pivot 66 against the pull of a spring 61.
  • a seeker 58 Integral with lever is a seeker 58 which is thereby brought into ednta'ctwith the paper 59 wrapped around the platen 10.
  • the paper 69 is proi'rided with a hole H so located that it will be opposite the point of the seeker 68 when the paper is in the correct position for
  • the platen 10 is provided with a circumferential groove 12 in the same plane as the hole ll.
  • roller 58 comes onto the lowest point of the periphery of cam 4'. and the'tip' of seeker 58 passes right through the hole'in the paper into the groove '12.
  • Attached to arm 51 carrying roller 55 is a short shaft 13 on which is pivoted a lever M having a horizontal extension 75.
  • a spring 18 f0- ta'tes lever 14 to bring extension-l5 undera step T! formed in the edge of a plate '18 pivoted at 19.
  • cam 41 causes four-armed lever 55' to be rotated clockwise about pivot 56 to bring seeker 68 out ofthe' hole in the paper H.
  • extension'l5 engaging step i? in plate 18 causes the latter to rotate clockt'lise about its pivot "I9 against the pull of a spring 89.
  • An extension SI of plate 18 engages under a back edge '82 of tli'ree armecl lever 35 so that the latter'is rotated clockwise about its pivot 35.
  • Ektension 31 or lever 35 rotates lever 38 anticlockwise about its pivot 39 thus extending spring 4
  • cam sleeve 23 is similarly allowed to make justone revolution for each signal combination received (notonly the form feed signal'combination) with the exception of the answer back signal combination which may in certain circumstances cause it to make a plurality of revolutions as will be explained later.
  • each received signal combination causes the function cam sleeve 23 to make one revolution and then to be arrested.
  • the revolution which follows the receipt of the form feed signal combination it is established whether the paper is in the right position or not, at least one further revolution of this cam sleeve is required to perform a form feeding operation should such prove to be necessary.
  • These further revolutions of the function cam sleeve 23 may conveniently be brought about by the reception of repeated form feed signal combinations.
  • the operator at the transmitter either depresses the form feed key lever a plurality of times or else depresses the form feed key lever simultaneously with the run out key lever, thus causing the form feed signal combination to be sent automatically a plurality of times.
  • the result at the receiver will be the same, namely that the detent It will be held out of the path of the pawl 20 each time the latter completes arevolution.
  • cam surface 88 is such that spring 4
  • lever 38 is lifted clear of vertical bail 42 as previously described and continued reciprocation of the ball has no further eifect on the feed pawl 81.
  • the form feed mechanism In order that the form feed mechanism shall be ready to function the next time a form feed signal combination is received, the mechanism must be reset into the condition shown in Fig. 1. In particular, it is necessary to disengage extension 15 of lever 14 from step 11 in plate 18. This is achieved on the receipt of the first line feed signal combination.
  • Receipt of the line feed signal combination causes the selection by the tiltable vanes (such as I) of the line feed function lever (not shown).
  • the form feed function lever 3 is pushed out into its unselected position if it has not already been pushed out on receipt of a previous signal combination.
  • the line feed function lever acts through mechanism (not shown) to allow a lever 93 pivoted at 94 to fall onto a bail 95 fixed to shaft i3.
  • bail 95 is first rotated clockwise and then anticlockwise in the same way as bails l2 and 42.
  • bail 95 As bail 95 rotates clockwise it engages a projection 96 on the lever 93 and thereby moves lever 93 in the same way as lever 81 was moved by bail 42.
  • the line feed pawl 91 is linked with lever 93 in the same manner as the form feed pawl 81 is linked with lever 38.
  • the continued clockwise rotation of bail 95 causes the line feed pawl tooth 98 first to engage one of the teeth in a ratchet wheel 99 fixed to platen spindle 92 and thereafter to rotate the platen 19 by an amount sufficient to feed the paper 69 thereon by the space of one line of printing.
  • a pin I09 projecting from lever 93 strikes lever 14 and rotates it anticlockwise by a small amount about pivot 13.
  • the answer back mechanism is prepared for operation by the'receipt of the Figure Shift. sig- 'nal combination and -released for operation (in normal --circumstances) by the subsequent receipt of'the who'are youfsignal combination.
  • the figureshift function 1ever'5 carries two projecting pins I05.and I06 on which is slidably mounted a detent member I01 lying parallel to the function lever and as the latter moves into selected position, the member I'OI is similarly rotated clockwise about a pointhea'rits lower extremity. This brings an extension MB of member IIlI into the path of 'a bail I'IIEI'fixed'to-sha'ft I3.
  • lever I'I5 which is normally held downby a spring IIB onto a lower step II'I formed in a member II B forming part of the stationary framework.
  • lever II3 rotates clockwise it liftsthe end of lever II5 clear of step II'Izand allows a spring H9 to draw lever II'5/and shaft 'II4 bodily in the direction of the arrow until the-end of lever I I5 comes onto an upper 'step I20 formed in member I I3.
  • the effect :of this: longitudinal movement of the shaft H4 and lever H5 is twofold, namely:
  • vanes such as I take up a combinational setting which permits the answer-back function lever 4 to be selected by being rotated clockwise about its pivot I26 under the pull of a spring I27.
  • the figure shift function -lever5 is rotated anti-clockwise into its unselected position if it has not already been rejected by the receipt of an intervening signal combination.
  • the answer back function lever A carries two projecting pins I28 and I29.
  • pin I26 is slidably mounted the lower end of a .detent member I36 while :a spring. I3I urges the upper end of member I30 to follow ,pin- I29.
  • member I30 As function .lever 4 moves clockwise into selected position, member I30 is similarly rotated clock- 8 wise about a point near itsslower extremity. :This brings an extension I32 ofmember I30 intotthe path of a bail :I 33xfixed to .shaft I3. .(Thelast mentioned items appear in both figures'of the drawing.)
  • the .receiptof thewho-are-you signal combination causes shaft I3 to be reciprocated as previously described and as itrotates initially clockwise, bail I33 acts on extension I32 to press member I30 downwards against the pull .of *8. spring I34 (Fig. .2).
  • Member I30 acts on .a turned-over end portion I35 of the-answer back release lever I25 to rotate thelatteranti-clockwise about its'pivot I36 so causing turned-over end 124 to :rotate lever I23 '(previously'positioned above end I24 the manner already described) clockwise together with its shaft H4.
  • the answer-back drum is of 'well :known-con- 'struction, being provided with a plurality of wards or teeth out to correspond to'the characteristic code combinations of "the station 'to'be identified.
  • These co-operate with thermal .set of permutation members in the transmitter mechanism of the teleprinter.
  • a feedipawl I 43 (shown input) which is reciprocated once in every revolution of the transmitter cam sleeve (not shown).
  • 'Pawl'l43 is arranged to advance the drum one tooth at a time thereby causingthe -answer-back code combinations to be sent out "sleeve produces no effect on the ratchet wheel f'When pawl I39 advances ratchet wheel MI by the space of one tooth in response 'to the receipt of the who-are-you'signal combination the feed pawl I43 is permitted to engage the tooth..im mediately behind the cutaway portion I44.
  • lever II (Jo-operating with lever II is a lever M5 pivoted at I 46 and having two turned over extensions Id'I and l i-8.
  • a spring anchored to a pin I 56 projecting from lever II urges extension I67 of lever I65 into contact with lever II and so causes lever I46 to move in sympathy with lever II.
  • lever I is similarly rotated clockwise about its pivot I46. This brings the right hand end of extension I 48 into the position shown dotted in Fig. 1.
  • extension I66 Normally this end of extension I66 is in front of a cutaway portion I 5 I in the upper end of the answer back detent member I 36 so that the latter is free to follow the answer back function lever 4 as it moves into selected position. In its dotted position, however, the end of extension I 43 of lever I46 acts as a blocking member to prevent the detent member from following the answerback function lever although it does not prevent the latter from moving into its selected position.
  • lever I63 pushes lever I58 so that the latter rotates clockwise about pivot I59 and away from its stop I6I.
  • This movement of lever I58 brings its lower extremity off an upper extension I62 of a bell crank lever I63 pivoted at I64.
  • a spring I65 anchored in the machine is thus permitted to rotate lever I63 clockwise about pivot I63 until a lower extension I65 formed from the horizontal arm of lever I63 comes into contact with the underside of the answer-back release lever I25.
  • a horizontal extension I66 of the vertical arm of bell crank lever I63 is brought into close proximity with a vertical member I61.
  • This member I61 is arranged to slide vertically in two guides, only one of which has been shown at I68, and is formed with a slot in which slides a pin I69 projecting from a lever I10 fixed to shaft I'I.
  • detent I6 is held out of the path of pawl 20 and the function cam sleeve 23 continues to rotate until the paper on platen I0 has been fed 11" to its correct position,.thepositiorrof the paper being tested once during each revolution by. the seeker 68.
  • lever I63 is prevented from againrotatingclockwise under the pull of spring. I65.
  • v lever 4 is rejected for any reason. before the form feeding is completed and the sion. of the-horizontal arm of bell crank lever;
  • lever I63 causes lever I63 to rotate am ti-clockwise andpermits itto be locked up "once more in a position where it no longer prevents the arrest of the function cam sleeve 23.
  • Page printing telegraph apparatus comprising means operative in response tov a tinotive signal of a first kind to movethe'paper; into a predetermined position, means normally operative in response to a distinctive signal ofa second kind to release an answer-back'trans mitter and means operative when said second. distinctive signal is received after said first diltinctive signal and before the paper has been. moved into said predetermined position to delay the release of saidanswer-back transmitter un-- til the paper has been moved into said position.
  • Page printing telegraph apparatus com prising a first function member selectable on receipt of a first distinctive signal to initiatethe. moving of the paper into a predetermined posiv' tion, a second function member selectableon receipt of a second distinctive-signal, arelease member controlled by said second function member, means normally urging said release member to follow said second function member into selected position means operative. when. said release member has followed said. second; function member into selected position. to. re.- lease and answer-back transmitter. and meansv controlled by said first function member. for. preventing said release member from followingsaid. second function member until the. paper. has. been moved into said predetermined position.
  • Page printing, telegraph apparatus as claimed in claim 2, further comprising a seeker member, means for moving. said seeker member into engagement with-the paper and means 'responsive to said "seeker member entering. a perforation in said paper to sup ress any rmmedi ately succeeding line feed operation.
  • Page printing telegraph apparatus as claimed in claim 2, further comprising abiocking'memb'er, means operable upon the. selection of said first function member to. position. said blocking member in the path of said release. member andmeans responsive to said seeker member entering a perforation in said paperto remove said blocking: member. from the path of said release member.
  • Page printing telegraph apparatus as claimed in claim 3, further comprising mehfil: responsive to the receipt of saidnrst signal or signals for moving said seeker memberinto engagement with said paper todetermine whether the paper is in said predetermined p0 sition prior toany movement of said paper- REGINALD DENNIS SALMON. LESLIE STAMPE MUNCK.v FREDERICK JAMES LESLIE No references. cited.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Handling Of Cut Paper (AREA)
US306984A 1951-09-27 1952-08-29 Printing telegraph apparatus Expired - Lifetime US2669602A (en)

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Application Number Priority Date Filing Date Title
GB316559X 1951-09-27

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CH (1) CH316559A (fr)
FR (1) FR1071112A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946843A (en) * 1953-10-21 1960-07-26 Automatic Elect Lab Automatic telegraph switching system with multiple call processing
US2997532A (en) * 1956-07-19 1961-08-22 Teletype Corp Sequential coincident selector systems and apparatus
US3419671A (en) * 1965-10-11 1968-12-31 Teletype Corp Telegraph transmitter control circuit
US3420948A (en) * 1965-10-11 1969-01-07 Teletype Corp Telegraph transmitter control circuit
US3448206A (en) * 1964-10-14 1969-06-03 Siemens Ag Teletypewriter system with at least one sheet teletypewriter machine
US4160874A (en) * 1976-08-30 1979-07-10 Siemens Aktiengesellschaft Process for signaling an interruption in the state of readiness for the reception in data terminal devices in which data are exchanged

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946843A (en) * 1953-10-21 1960-07-26 Automatic Elect Lab Automatic telegraph switching system with multiple call processing
US2997532A (en) * 1956-07-19 1961-08-22 Teletype Corp Sequential coincident selector systems and apparatus
US3448206A (en) * 1964-10-14 1969-06-03 Siemens Ag Teletypewriter system with at least one sheet teletypewriter machine
US3449515A (en) * 1964-10-14 1969-06-10 Siemens Ag Teleprinter apparatus employing techniques for interrupting message flow during carriage return
US3419671A (en) * 1965-10-11 1968-12-31 Teletype Corp Telegraph transmitter control circuit
US3420948A (en) * 1965-10-11 1969-01-07 Teletype Corp Telegraph transmitter control circuit
US4160874A (en) * 1976-08-30 1979-07-10 Siemens Aktiengesellschaft Process for signaling an interruption in the state of readiness for the reception in data terminal devices in which data are exchanged

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Publication number Publication date
CH316559A (fr) 1956-10-15
FR1071112A (fr) 1954-08-25

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