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US2585041A - Printing telegraph receiver - Google Patents

Printing telegraph receiver Download PDF

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Publication number
US2585041A
US2585041A US761523A US76152347A US2585041A US 2585041 A US2585041 A US 2585041A US 761523 A US761523 A US 761523A US 76152347 A US76152347 A US 76152347A US 2585041 A US2585041 A US 2585041A
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Prior art keywords
lever
function
cam
printing
members
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Expired - Lifetime
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US761523A
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English (en)
Inventor
Salmon Reginald Dennis
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Creed and Co Ltd
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Creed and Co Ltd
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Priority claimed from GB7142/47A external-priority patent/GB643153A/en
Application filed by Creed and Co Ltd filed Critical Creed and Co Ltd
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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
    • H04L17/18—Code selection mechanisms
    • 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
    • H04L17/24—Apparatus or circuits at the receiving end using mechanical translation and type-head printing, e.g. type-wheel, type-cylinder

Definitions

  • the signal translating mechnaism is designed primarily to effect the translation of the received signals into printed characters, the actuation of functions being provided as a secondary feature.
  • a printing telegraph receiver comprisin a plurality of setting members
  • the spring urged members may then be arranged evenly' around the whole circumference of the notched discs apart from the spaces occupied by members linking the said discs to said rods. Substantially the whole circumference of the typewheel may thus be occupied by type-characters, no
  • the printing cam is selectivelyreleased for rotation in accordance with the received signal.
  • the spacing cam is driven through a clutch separate from that which drives the translator cam sleeve and the engagement of such clutch is controlled by a cam on the translator cam sleeve.
  • the spacing cam can then be selectively released for one or for a plurality of revolutions.
  • a function-selector-member may be. provided in addition to the code-function-selector-members to determine Whether character spacing is totake place or not.
  • character-spacing may precede the printing operation or may succeed it, or printing may take place without spacing.
  • an accent may be printed over a character already printed, and this may or may not involve spacing.
  • Figs. 2 and 3 are views of the array of function-selector-members with the case shift memher in different positions.
  • Fig. 4 is a view of the rotating shafts and gearing of the receiver.
  • Fig. 5 shows the arrangements for axial movement of the typewheel.
  • Fig. 6 is explanatory of part of mechanism for controlling spacin and printing.
  • Fig. 7 shows part of the mechanism for controlling printing.
  • Fig. 8 shows part of the mechanism for effecting spacing.
  • Figs. 9 and 10 illustrate the mechanism for the secondary case shift.
  • Fig. 11 shows the mechanism for releasing the spacin cam sleeve for rotation.
  • Fig. 12 shows the arrangements for controlling the mechanism of Fig. 11 for tabulation purposes.
  • Fig. 13 shows the arrangements for controlling the mechanism of Fig. 11 in a receiver adapted for Arabic script.
  • Fig. 14 shows the arrangements for controlling the mechanism of Fig. 11 on the occasion of printing accents in the Japanese Kara script.
  • Fig. 15 is a timing diagram of the operation of the printing telegraph receiver.
  • a typewheel is mounted in 9, carriage traversable parallel to a platen for page printing.
  • the typewheel is rotatable through a splined shaft as described in United States Patent No. 2,382,668-
  • FIG. 15 This is a timing diagramof the operations of the receiver for a five-unit code.
  • Line A shows representative received signals.
  • the response of the receiver electromagnet'to the start element of a signal releases.
  • On this cam sleeve are mounted five cams.
  • Lines B, C, D, E and F shows the shaping and timing of these respective cams.
  • L'Ihe cam to which line B refers pushes the armature towards the electromagnet and at the middle of each code element leaves the armature 'free to take up the position determined by the kind of signal element.
  • a cam operating as in line '0 looks it in position.
  • the translator cam sleeve commences to rotate.
  • a cam the operation of which is illustrated in line .H, moves the five storage members to operate five setting members.
  • the five setting members are in the form of vertical rods, of which two only, and 2, are shown in Figure 1. Linked with each vertical rod are two'bell crank levers '3 and 4, shown linked with vertical rod 1, and 5 and 6 with vertical rod 2. The rods I, 2 are mounted in guides (not shown) for longitudinal movement.
  • the rods .1, 2 are linked with character selector members in the form of discs 1, 8 by means of projections 9, 10 on the rods fitting into corresponding recesses in the discs 1, 8.
  • the discs I, 8, together with the other three discs (not shown) are mounted for rotation about a central axial pivot and are' formed with notches around their circumferences.
  • the notches in the discs are disposedfin well known manner, so that for each setting of the discs according to a received signal, one, and only one, of the rods enters a series of aligned notches in the discs and in doing so moves into the path of a stop arm fixed to one of the members through which the above mentioned spline shaft is driven, as described in said British patent.
  • the rotatory movement of the type wheel is timed as shown in line G of Fig. 15.
  • Co-operating with the code-function-selectormembers 18-22 are function-levers, 25, 26, ( Figures 2 and 3), 21, :28, ( Figure 6) 29, 30 ( Figure '7), 3
  • These functionlevers are levers pivoted on rods 35, 36 and are arranged in pairs on opposite sides of the code-function selector members 18-22. Each pair is connected together at the upper ends of the levers by a spring 31 for each pair so that the levers are spring-urged towards the members 18-22.
  • the levers 25-34 are cut with a series of notches 38 with saw-tooth edges, arranged so that for one particular setting of the code-function-selector-members I8-22 the rollers l7 thereon are opposite the notches of the lever in question. Any notch of a lever is, therefore, cut in one or other of two positions according to whether the lever is to be selected for movement by a marking or spacing position of the corresponding codefunction-selector-member. Thus any particular lever will be free to be moved by its spring 31 for one particular setting of the members l8-22. When any one of the members l8-22 moves into another position on a subsequent setting, the last mentioned levers 25 and 26 will be forced away from the members l8-22, the rollers 11 ensuring a smooth camming action with the minimum of friction.
  • the function members 25-34 serve directly or indirectly to cause the various functions to be performed. Since the selection of functions is performed by means of the setting of members I8-22 entirely independently of the selection of characters to be printed, which is performed by the discs 1, 8, the rods around the circumference of the latter discs may be, and are, arranged evenly around the whole circumference save for the portion occupied by the links 9, 10 ( Figure 1) and thus the whole of the circumference of the type-wheel can be occupied by type characters, no blank spaces being left corresponding to functions not-involving printing of a character.
  • the various functions to be performed are carfor printing on the platen 59.
  • cams are carried on various cam sleeves, driven through clutches from shafts constantly driven bya meter.
  • the motor shaft 39 of a constantly running motor 40 drives a selector shaft 4
  • the motor supplies the power for all the operations carried out by the printing telegraph receiver (excepting the actuation of the armature of the receiver relay, which is effected by the signal impulses received from this distant transmitter).
  • is in mesh with an equivalent gear wheel 45 fixed to the translator shaft 46.
  • a gear wheel 41 is in mesh with, and driven by gear wheel 45, and is also in mesh with gear wheel, 48, which is fixed to the function shaft 49.
  • gear wheels 45 and 48 are of the same size the function shaft 49 is driven at the same speed as the translator shaft 46 and the selector shaft 4
  • Gear Wheel 41 is also in mesh with, and drives gear wheel 50, fixed to the printing shaft 5
  • gear wheel 50 is the same size as gear wheel 45, the printing shaft 5
  • Gear wheel 52 is also fixed to the printing shaft 5
  • Gear wheel 52 is approximately twice the size of gear wheel 50 or gear wheel 53, so that the type wheel driving shaft 54 is driven at approximately twice the speed of the various shafts mentioned up to the present.
  • the selector cam sleeve above referred to is driven through a friction clutch from the selector shaft 4
  • the printing cam sleeve carries a cam 55, Fig. 5, the timing of which is shown in line N of Fig. 15, which moves the typewheel 55, Fig. 5, axially to bring either the upper row of type 51, or the lower row of type 58 into position
  • the particular row of type which is brought into the printing position is determined by means of a shift vane 60, Figures 2, 3 and 5.
  • This vane 60 is fixed to a horizontal shaft 6
  • the other arm 61b of the bell crank lever 61 is fixed to a bail 69 extending parallel to the platen for a distance equal to the extent of movement of the typewheel chariot in traversing a line of printing.
  • Bail 69 is engaged by the'forked end of a lever 19, pivoted at 1
  • the other end of .the lever 18 is also forked and engages a roller-12,"fixed to
  • the translator cam sleeve (not lever 14 is also pivotedon' th'esame pivot:65' as lever 64, and is linked t one arm of lever 64 by--a spring 15.
  • Lever-14 is,-however, normally prevented from'following the counter-clockwise rotationcf lever 64, by a hook 16, on one arm of a lever 11, which hook engages theturned over 'end-oflever 14.- The end of the other arm of lever 11 abuts against an arm 18 fixed to the underside of.-vane 60.
  • the lever 25 ( Figure 2), is the figure-shift function member and when the function-selector-members
  • the lever 25 is shown in Fig. 3 in its selected position. H
  • a finger 19. carried by the lever 25 abuts against the arm 63 on the vane 60, and this vane is tilted into the position shownin Figure3, which position an extension thereon rides onto the shoulder 8
  • the pivot 82 is mounted on lever 26, and the latch 8
  • the .vaneBl controls the .sleeveg13 carrying typewheel 56. Another .75 the printing function, while thevane 88 controls the spacing function of the receiver.
  • the vanes 81 and 88 Fig. 5 are held inthe horizontal position until the code-function-selector-members take up a setting corresponding to the received signal.
  • The, particular function lever, that is thus selected by the function selector members 18-22 determines whether eitheror both of the vanes Bland 88 shall be held in -a horizontalposition after lever 9
  • Any such function-lever corresponding to a function the operation of which-does not involve printing such as the figure-shift function lever 25, (Fig. 3) is outwith a notch93 which holds the vane 81 in a horizontal position.
  • Any function lever corresponding to .a function the operation of which does not involve spacing is cut with a similar notch 94, which holds the spacing vane 88 in horizontal position.
  • Certain function levers such as the figure shift lever 25, shown in Fig. 3, have both notches 93 and 94, since they are required to suppress both printing and spacing, whereas other function-leve'rs such as 21Fig. 6 or 29 Fig. '7, are provided only with one of these notches.
  • Function lever'Z-I (Fig. 6) is an example of-a lever corresponding to a function for which spacing must be suppressed but printing allowed to take place such as -the printingof an accent over a previously printed letter.
  • Function lever 29 corresponds to a function for which printing is suppressed and spacing allowed to take place, such as-the character space function.
  • vane 81 When vane 81 is in a horizontal position (Fig. -'7) itengages one arm of adetent lever 95 pivoted at 96 or lever'90 and'holds it in the position shown in full lines in which position the :other arm-of lever 95 engages theend of a cam'followerm'ember 91, pivoted on a shaft and holds itagain'st the tension of aspri'ng- I out of operative connection with a cam 99 on the'translator-cam shaft 46.
  • the timing of cam 99 is shown in line L of Fig. 1 5. Should, however, vane 8'! not be held in a horizontal position, but allowed to assume the position shown in Fig. 6, then the lever 95 isable to take up the position :shown in broken lines in Fig.
  • cam follower member 91 is drawn by a spring I00 into engagement with cam 99.
  • the member assumes the position shown in broken lines and allows the shaft 98 to rotate in a counter-clockwise direction.
  • a detent holding a ratchet clutch (not shown) out of operation, is fixed to the shaft 98, and by this counterclockwise rotation of the shaft the detent is 'removed from operative connection with the clutch and allows a printing cam sleeve to be clutched to the printing shaft I (Fig. 4) forum revolution.
  • the printing cam sleeve carries cams, the operations of which are timed as shown on lines N, O and P of Fig. 15.
  • Line .N shows the timing of cam 55 referred to above.
  • the printing cam line P (Fig. 15) operates a bail, which-in turn operates a printing hammer to strike the type on the type-wheel 56 (Fig. 5) against the platen 59 in the manner describedin said British Pat- ⁇ ent No. 580,882.
  • Fig. 8 The action of the vane 88 is shown in Fig. 8.
  • the sleeve 73 carrying the type-wheel '55 (Fig. 5 is mounted in a type-wheel chariot (not shown) which is traversed parallel to the platen 59 inthemannerrlescribed in said BritishPatent No..580,8.82... .Fixed. to the type-wheel chariot is pins I'I3'in the slots III and H2.
  • a .feed .pawl .-IOI (Fig. 8) engaging a feed rack vI02, that extends the full width of the machine andthe-chariot alsocarries a retaining pawl (not shown) that engages with a stationary rack I0 3, which also extends the full width of the machine.
  • Rack-I02 isreciprocated for each signal received to the extent of one tooth thereon by a cam the timing -of which is shown in line R of Fig. 15 which cam forms part of the function cam sleeve driven 'from the function shaft 49.
  • This function-cam sleeve is released for rotation by a cam on'the translator cam sleeve the timing of which isshownin-line M of Fig.15.
  • Link I06 is heldby spring IBBa with a latch projection I01 engaging alever I08 and thus this lever I08 is rotated by the movements of link I06 about a pivot-rod 09in a counterclockwise direction and thereby raises a bail H0.
  • the bail H9 is furnished with inclined slots III and I 52.
  • a fixed guide pin H3 fits in slot III and a similar guide pin (not shown) in slot Il2.
  • the vane '88 carries an arm 'I I5, having a roller II6 thereon, which engages the 'bent-over en'd I06b of the link I06.
  • the vane 88 is urged towards clockwise rotation about its shaft 86 by spring Ill. If the vane 88 is held in horizontal position by a function lever such as 21 (Fig. 6) the spring I I7 is unable to rotate the vane'and no spacing action takes place, as above described.
  • the spring I I1 rotates it in a clockwise direction.
  • the roller II6 then moves the link I06 about its pivot I I8 against spring I 06a and so removes the latch I01 from engage- .ment with lever I08.
  • the reciprocation of the link I06 is thus without effect in raising the feed pawl I 0I from engagement with rack I02 and on reciprocation of that rack, spacing movement of the type-wheel chariot takes place.
  • the vane 81 thus constitutes a printing function-selectormember and the vane 88 a spacing functionselector-member.
  • the all-blank signal the signal representing a function
  • the signal representing a function there is provided a secondary shift signal that can be used alternatively with the figure shift signal.
  • This secondary shift signal may conveniently be the all-blank" signal.
  • Fig. 9 there are shown two function levers 3! and 32.
  • Lever 3I is the secondary shift function member and is provided with slots 38 corresponding to an all-blank signal consisting of five successive spaces.
  • a vane II9 carried in a rotatable shaft I20 is pressed intoa horizontal position, as' shown, against the tension of a spring I 2
  • Shaft I20 is parallel to and in the same vertical plane as the shafts II-I5 and 6
  • a latch I24 is pivotally mounted on a bracket I25, fixed to a part I26 of the framework of the machine, which part is also formed with comb guides for the function levers 25-26- -3I 32, etc.
  • Latch I24 is pulled to the left by a spring I21 attached to function lever 3I and when vane H9 is pressed into the horizontal position, it snaps under the latch I24 and is retained as shown in Fig. 9.
  • Each of the special function levers such as lever 33 (Fig. 10) is provided with a slot I28 so that it is selectable when vane I I9 is in the horizontal position.
  • a lever I29 mounted on a pivot I30 has one end cooperating with the latch I24 while the other end is held against a cam I3I carried on The timing of this cam is shown in line K of Fig. 15. This cam rotates lever I29 clockwise once in each revolution, immediately before each change of setting of the code function selector members to withdraw the latch I24 from engagement with the vane H9 and then allows it to fall back.
  • the tabulator function may be taken.- When a tabulator function member I32 (Fig. 12) is selected the result is to cause the rotation of the spacing cam to continue through a plurality of revolutions to traverse the type-wheel carriage up to the commencement of a new column.
  • Fig. 11 showsthe normal arrangement whereby the function cam sleeve I33 is clutched to the function shaft 49 under the control of a cam I34 on thetranslator cam shaft.
  • the translator cam sleeve is rotated once for every received signal.
  • the timing of cam I34 thereon is shown in line M of Fig. 15.
  • This cam I34 acts through the medium of an operating arm I35 (Fig. 1l) upon a detent I36 that is normally holding a'pawl I31 pivoted on the spacing cam 1 l a support I42 mountedon the frame-work ofthe machine.
  • the arm. I35. is urged by spring I43, into engagement with cam I34 and when the hollow of this cam is presented to the end of the arm I35, the armis moved by the spring I43 in a-clockwise direction.
  • a finger I44 on the arm I presses on an upturned portion I of a detent trip finger I46 which is pivoted on the same pivot I4'I'as the arm I35.
  • the detent trip finger I46 in moving clockwise engages an upturned portion I48 of the lever I39 and rotates this lever against a spring I49 to withdraw the detent I36 from engagement with the pawl I31.
  • the pawl I31 is thereupon.
  • cam sleeve I33 rotates with theshaft 49.
  • the cam I34 and the levers operated thereby are shown in the positions they occupy when detent I36 has just been withr drawn from pawl I 31 but this latter is for clearness shown in the position when the. cam sleeve I33 has completed half-a-revolution.
  • cam sleeve I33 carries the spacing cam (lineR of Fig. 15), cam I94 previously referred to (line 8- of Fig. 15) and a third cam (line T of V Fig. 15) ⁇ v ith which this invention is not concerned.
  • the operation ofthe tabulator function lever I32 is shown in Fig. 12.
  • a three-armed lever I52 ispivoted on the framework of the machine at I53 and an armthereof, I54, is held against the tabulate function lever I32 by a spring I55.
  • the tabulator function lever is selected and moves to the right in the figure the three-armed lever is free to be rotated in a clockwise direction to a sufficient extent so that a hook I56 on one of the arms I51 engages a projection 58 on the detent grip finger I as and so holds this finger I46 in its extreme clockwise position.
  • the detent I 36 is thus held out of the path of the pawl I31 and the function cam sleeve I33 continues to rotate for more than one revolution.
  • a printing telegraph receiver adapted for the printing of characters, which require a greater character spacing in the case of. some characters than in the case of others comprising means operative upon the receipt of a signal representing a character to effect the required character. spacing.
  • telegraph code In order to represent these characters in printing; telegraph code it is necessary to use a. sixunitcodeand in order to select function levers it is necessary to have-six code-function-selectormembers and accordingly a sixth member is addedto the members. I8 to 22.
  • a six unit code allows of the selection of 64 signal combinations and therefore to provide for 92 characters and, in addition, the necessary functions; a case-shift signal is allottedand a case-shift selector member is provided which operates exactly as described above forvane 6.0.
  • the signals are. allocated to the various characters in such manner as to reduce to a minimum the number of function levers, the selection of which will cause an alteration of the normal character spacing of. two units to a character spacing of a single unit.
  • the characters then fall into three groups, and the first action in allocating the signals to the characters is to divide the signals into two groups, according to the condition of .oneof the signal elements. For Convenience, the first signal element of each code combination is taken. There are thirty-two permutations of the last five signal elements associat ed with a marking condition for the first element and thirty-two permutations associated with a spacing condition for the first element. Twenty-five wide characters inthe upper case and a corresponding twenty-five wide characters in the lower case are then allocated to one of these groups, for example, that group in which the first code element is spacing. Each of the characters in the lower case in this group shares a signal with a character .in the upper case.
  • the other group of thirty-two signals is then subdivided into two groups of sixteen signals, according to the character of the second element of the signal.
  • To that group of signals in which the first code element is marking and the second code element is spacing are allocated twelve narrow characters in the lower case, and twelve wide characters in the upper case, each of which shares a signal with one of the narrow characters.
  • To that group of signals in which the first code element is marking and the second code element is also marking are allocated the nine narrow upper case characters and the remaining nine lower case characters, a character in the lower case sharing a signal with a character in the upper case.
  • a second function member is selected if the first code-function-selector-member is in marking position and the case shift function-selectormember is in letter shift position, irrespective of the positions of the other five code-function-selector-members.
  • cam I 34 on the translator cam shaft When the hollow of cam I 34 on the translator cam shaft is presented to the end of lever I35, the detent I36 is removed from engagement with pawl I31 in the manner previously described.
  • the hollow of cam I34 is of such depth that detent I36 is moved twice as far as is necessary to remove it from the path of pawl I31 and the detent trip finger I 46 is thereupon caught by a latch I6I pivoted at I62 on the framework of the machine, and held in the position shown.
  • a cam I63 thereon moves a latch I64, also pivoted at I62 in a clockwise direction, but without any effect and then moves latch I6I in a clockwise direction.
  • latch I'6I frees it from engagement with detent trip finger I46 and the detent lever I39 is free to be moved by its spring 549 in a counter-clockwise direction, pushing the detent trip finger I46 with it until the latter is engaged by the end of latch I64.
  • the detent I 36 is still held away from pawl I37 and the function cam sleeve makes another revolution. When on this revolution,
  • cam I63 moves latch I64. the end of this latch is freed from the detent trip finger I46 and the detent lever. I39 is free to move into the path of pawl I31 and the function cam sleeve I33 is thus arrested after two revolutions,- two character spacings having been given to the type-whee chariot.
  • a three-armed lever I66 is pivoted at I61 on the framework of the machine and is urged in a clockwise direction by a spring I68.
  • a horizontal projection I69 on the lever I66 spans both the function levers that are allotted to narrow characters.
  • the function cam sleeve I33 is released for rotation as previously described and on the first rotation cam I63 frees latch I64 from detent finger I46 and detent I36 is returned into the path of pawl I31 to arrest the function cam sleeve I33 after one revolution only.
  • the function cam sleeve I33 is released for rotation with the shaft 49in a manner similar to that described above. As in the case of the Arabic script the function cam sleeve I33 is driven at twice the speed of the other cam sleeves but is released for rotation for one revolution only. Normally the function cam sleeve I33 is released for rotation when the hollow of cam I34 is presented to the end of lever I35.
  • a latch"I*'I3' is pivoted-on the framework of" the machine at I14- and is held by a spring I115: latch I131 has a turned-over end M6 and isheld' against lever I12.
  • latch I13 follows'it and the hook [13a on: one arm of this latch engagesthe turned-over end of arm I1I fixed to lever I35.
  • Lever I is therefore prevented from following cam I34. and irommoving detent lever I39;
  • Fig. 14 shows function lever I12 in the selected position.
  • the latch I13 In the unselected position of this lever the latch I13 is rotated clockwise from the position shownso that the latch I13 is clear of the arm I1'I' but a turned over end I88 of one arm 'of latch I13 engages a hook I89 on the end of a third arm I90 of three-armed lever I19 and prevents this lever being drawn by spring I8I to follow bell crank lever I18. The release of the functioncam sleeve by the printing cam I11 is thus prevented;
  • Printing telegraph receiver comprising a plurality of movable. setting-members, one for each element of'the code, a like plurality of movable character-selector-elements, each linked with onev of said setting members and adapted to be moved thereby, a like plurality of rotatable code-function-selector members, each of said selector-memberslinked with one of said settin members, and adaptedv to be rotated through a small angle thereby, each of said selector-members carrying'rollers thereon, a plurality of function levers,spring means attached to each of said levers for urging same towards said selectormembers, each of Said levers provided with a series of notches cooperating with the rollers of said selector-members, said notches being so shaped that the rollers of said selector-members can enter said notches and subsequent angular movement of said members forces the function levers awayi'rom said selector-members, said setting-members selectively moved in accordance with each
  • a printing telegraph receiver as claimed in claim 1 wherein said levers are disposed in pairs on opposite sides of said selector-members, each of said levers pivotally mounted at one end and connected at the other endby saidlspring means, each of said pairs of levers adapted to be moved by said spring means for one particular setting of said selector-members.
  • Printing telegraph receiver as claimed in claim 3, further comprising a rotating printing cam, means under. control of said cam to effect printing, said control means coupled to said printing-function-selector member and operative in accordance with received signals.
  • Printing telegraph receiver as claimed in claim 1 further comprising a type shift member, movably mounted between said levers, and adapted tobe rotated through a small angle by said levers, said shift member controlling the nature of the characters printed.
  • said clutch control means further comprises an additional pair of latches, an additional cam on said function ca'm sleeve adapted to cooperate with said latches, said latches adapted to control said clutch means in accordance with the extent to which said clutch control means follow said control cam, said addi tional pair of latches adapted to be actuated by said additional cam,

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Record Information Processing For Printing (AREA)
US761523A 1946-04-30 1947-07-17 Printing telegraph receiver Expired - Lifetime US2585041A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB270401X 1946-04-30
GB7142/47A GB643153A (en) 1946-04-30 1947-03-14 Improvements in or relating to printing telegraph apparatus

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US2585041A true US2585041A (en) 1952-02-12

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US761523A Expired - Lifetime US2585041A (en) 1946-04-30 1947-07-17 Printing telegraph receiver
US14177A Expired - Lifetime US2615980A (en) 1946-04-30 1948-03-11 Printing telegraph apparatus

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US (2) US2585041A (xx)
BE (2) BE482365A (xx)
CH (1) CH270401A (xx)
DE (2) DE915348C (xx)
FR (3) FR949015A (xx)
GB (2) GB620682A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754361A (en) * 1950-10-16 1956-07-10 Kleinschmidt Lab Inc Selector mechanism
US2802048A (en) * 1950-08-31 1957-08-06 Edward E Kleinschmidt Selecting and printing apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773931A (en) * 1951-07-06 1956-12-11 Kleinschmidt Lab Inc Printing telegraph apparatus
US2892029A (en) * 1954-12-29 1959-06-23 Teletype Corp Line feed delete mechanism

Citations (4)

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US1884754A (en) * 1930-01-27 1932-10-25 Teletype Corp Printing telegraph
US2281775A (en) * 1938-09-13 1942-05-05 Western Union Telegraph Co Telegraph printer
US2329652A (en) * 1936-05-04 1943-09-14 Teletype Corp Printing telegraph apparatus
US2349674A (en) * 1942-08-13 1944-05-23 Teletype Corp Printing telegraph apparatus

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US1857786A (en) * 1929-09-16 1932-05-10 Teletype Corp Telegraph printer and the like
US2074423A (en) * 1930-05-08 1937-03-23 Int Standard Electric Corp Selecting system
DE729349C (de) * 1940-11-12 1942-12-14 Siemens Ag Anordnung fuer Typentraeger von Telegrafengeraeten, die zwei Alphabete in drei Reihen von Typen Tragen
US2318168A (en) * 1941-06-14 1943-05-04 Bell Telephone Labor Inc Printing telegraph apparatus
US2437790A (en) * 1944-07-27 1948-03-16 Trans Lux Corp Electric circuit controller

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Publication number Priority date Publication date Assignee Title
US1884754A (en) * 1930-01-27 1932-10-25 Teletype Corp Printing telegraph
US2329652A (en) * 1936-05-04 1943-09-14 Teletype Corp Printing telegraph apparatus
US2281775A (en) * 1938-09-13 1942-05-05 Western Union Telegraph Co Telegraph printer
US2349674A (en) * 1942-08-13 1944-05-23 Teletype Corp Printing telegraph apparatus

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Publication number Priority date Publication date Assignee Title
US2802048A (en) * 1950-08-31 1957-08-06 Edward E Kleinschmidt Selecting and printing apparatus
US2754361A (en) * 1950-10-16 1956-07-10 Kleinschmidt Lab Inc Selector mechanism

Also Published As

Publication number Publication date
DE881361C (de) 1953-05-07
FR949015A (fr) 1949-08-18
BE476278A (xx)
GB633752A (en) 1949-12-19
FR60015E (fr) 1954-09-22
FR963302A (xx) 1950-07-05
GB620682A (en) 1949-03-29
DE915348C (de) 1954-07-19
CH270401A (fr) 1950-08-31
US2615980A (en) 1952-10-28
BE482365A (xx)

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