US2462132A - Type wheel positioning mechanism for printing telegraph apparatus - Google Patents

Type wheel positioning mechanism for printing telegraph apparatus Download PDF

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Publication number
US2462132A
US2462132A US572344A US57234445A US2462132A US 2462132 A US2462132 A US 2462132A US 572344 A US572344 A US 572344A US 57234445 A US57234445 A US 57234445A US 2462132 A US2462132 A US 2462132A
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typewheel
printing
type
lever
carriage
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US572344A
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English (en)
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Salmon Reginald Dennis
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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
    • 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
    • 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
    • H04L13/182—Printing mechanisms

Definitions

  • Such a printing telegraph receiver is described and claimed in British Patent No. 524,342.
  • a printing telegraph receiver comprising a typewheel normally located in such position that the line on the paper upon which printing is to take place is visible and the type wheel is moved into printing position to'print on said line and again out of such position for each printing operation.
  • the type Wheel is furnished with two rows of type some means is necessary to bring the selected row of type into and out of printing position. This is effected in the machine described by giving to a lever for raising the typewheel an amount of movement a little more than is necessary to move the lower row of type into printing position.
  • type wheel shaft is then arrested in its movement by one of two abutments selected according to whether the upper or lower row of type is to be selected for printing- By such an arrangement the type wheel shaft is subjected to shocks at each movement.
  • a printing telegraph receiver comprises a typewheel provided with a plurality of rows of type normally out of printlng position and means efiective for every operation of printing from any of said rows for bringing the selected row into and out of printing position in a motion which approximates to simple harmonic motion, whereby shock is substantially eliminated.
  • a printing telegraph receiver comprises a type Wheel having the type thereon arranged in a plurality of rows, a plurality of levers corresponding respectively to the rows of type, each having a different ratio, means for selectively rendering one of said levers effective to move said type wheel, and means for actuating the selected lever to bring the corresponding row of type into printing position andto return the typewheel into a position to leave the printed character visible.
  • the embodiment of the invention to be described employs the invention claimed in U. S Patent No.
  • 2,308,306 viz: a page printing telegraph receiver comprising a typewheel having its axis substantially at right angles to the axis of the platen,'and having the type elements arranged in a plurality of rings, in which the type wheel is rotatable to select a type element within a ring of elements, movable axially to select one of said rings and traversable parallel to the axis of the platen for letter spacing and means is provided for moving a selected individual type element radially of the type wheel to effect printing.
  • the type wheel is rotated by means of a. spline shaft along which the movable carriage is traversed.
  • This, method of rotating thetypewheel has considerable advantages from the point of view of simplicity and also asenabling almost any desired form of translation of the received signal elements into a selective positioning .of the typewheel to be used but it unfortunately presents manufacturing difliculties which it is believed have not hitherto been overcome in practice. These difliculties arise from the f-aet that it is impossibletomanufacture aperfectly straight spline shaft. These difficulties have, however, been overcome by providing a self aligning coupling between a member keyed to the spline shaft and a member freelyrotatable about the spline shaft.
  • Fig. 1 is an exploded perspective viewof the machine, the framework upon which it is mounted and some details being omitted for the 3 sake of clearness. A few parts are shown in section.
  • Fig. 2 is a sectional view of the driving means for the typewheel.
  • Fig. 3 is a detail, omitted from Fig. 1 for the sake of clearness, showing the carriage return mechanism.
  • Fig. 4 is an exploded view of a. self aligning coupling used in the driving means for the type wheel.
  • Fig. 5 shows curves for explaining the shift movement of the typewheel and its timed relation to the printing action and the selective rotation of the typewheel.”
  • Fig. 1 shows an exploded perspective view of a page printing telegraph receiver employing a typewheel mounted on a movable carriage.
  • the framework upon which the parts are mounted has been omittedin order not to obscure any parts of the'niechanism; this framework and the'manner inwhich the mechanism is mounted therein are of well known construction and form no part of the present invention.
  • An electric motor I drives a main shaft 2 through gearing ⁇ .
  • The, shaft 2 drives through gearing 4 a shaft 5 "from which various cam sleeves j arej driven through clutches aswill presently appear.
  • the translating 'mechanism is similar to that describedin ULS. Reissue Patent No. 17,725.
  • An electromagnet 6 responds to the incoming signals and in response to the start elementvof a signal moves its armature I tov the right in Fig. 1, thereby rotating lever am a'clockwise direction.
  • Lever Bis mounted on a rock shaft Bjcarrying a detent lever Ill.
  • Rotation' 'of detent lever Win a clock wise direction removes it from a detent II on a camsleeve l2 tending to be driven through a clutchinotshown) from shaft 5, and cam sleeve l2 thus commences torotate.
  • 11A striker pin I3 is carried on a link M pivoted to "a lever l5 carrying a cam follower IG held by aspring (not'shown'i against a cam llj on cam sleeve 12.
  • a cam” l8 also fixed on cam sleeve l2 reciprocate's a striker lever l9 moving in guides 20"fixed torock shaft 9. 'As the'rock shaft 9 is rotated anti-lockwise or clockwise by armature l in; accordance with the character of received signal elements the striker lever I9 engages striker pin l3 or is clear thereof.
  • are pivoted on a finger actuating lever 22 and after the selector fingers lahave all been'set in accordance with the elements of the received signal, a cam (not shown) onthe cam'sleeve l2 movesthe lever 22 so as tocause the selector fingers 2i tobe moved to the right'in the-drawing to act upon a set of members for determining the position of a typewheel.
  • the selector fingers when moved by their actuating lever are caused to act upon notched code discs.
  • are caused to set corresponding code bars 23, which code bars act to position notched code discs and also to select the functions to be performed. Furthermore the code bars 23 remain in the positions into which they are actuated by the selector fingers 2! instead of being returned into initial position by springs as are the code discs described in the above mentioned patent.
  • a selector finger 2! has been moved downwards by thestriker pin [3 it is opposite the end 2 3 of its corresponding code bar 23. If a selector finger 2
  • the corresponding lever 26 will be rotated anti-clockwise and will bring corresponding member 25 into position to be struck by a selector finger 2 I if the latter be in the upper position'when subsequently moved to the right. If a selector finger 2
  • the code bars 23 are held in'either of the two positions into which they are actuated, by means for example of'jockey sprin s (not shown).
  • Linked to each code bar 23 is a notched combination disc 28.
  • the stop members 29 are urged towards the centre of the discs 28 by means of a spring 3
  • the shaft 32 is driven from a shaft 33 through a clutch 34.
  • the shaft 33 is driven through gears 35 from a shaft 36 which in turn is driven from shaft 2 through gears 31.
  • the shaft 32 is connected to a hub 38 through a shock absorbing coupling 39 which is described and claimed in United StatesPatent No. 2,382,668 issued August 14, 1945..
  • the clutch 34 is also described in that patent.
  • the carriage 45 runs on guide 'rails" 46, 4l '(Fig. 1)
  • Spindle 42 isprovide'd -at its lowerend with'a squared portion 48 '(Fig. 2) which 'can slide within an internally squared .sleeve -49 carrying a bevel-gear 50.
  • Aisocarried on carriage 45 is a bearing EI within which 'is-rotatably mounted a sleeve 52 coaxial with the spline shaft 40.
  • Fixed to sleeve"52 is a bevel gear 53 meshing with bevel gear- '50.
  • “Sleeve 52 is driven through a self alignin-g coupling'from a sleeve 54 also mounted on carriage l5 and -slidea-ble along spline shaft 40 but keyed tothe spline shaft '40,
  • the self aligning coupling is shown exploded in Fig. 4 and comprises a thin sleeve 55 freely rotatable about shaft '46 and having formed on its opposite ends twokeyways 56 and 51 at right angles to one another.
  • A-keytii on sleeve 52 engages in key way 5l and a key 59 on sleeve 54 engages in key way56.
  • 'Sleeve 55 is of such thickness that keys 58 and 59 engage therewith in almost the same vertical plane.
  • sleeve 52 If sleeve 52 is out of alignment withsleeve fi i and/or sleeve 55 the keys 58, 59 still enga'gein slots 5'l and 56 respectively and so transmit rotary motions.
  • the interior of sleeve 54 is fil-led with lubricating material 50 to providelubrication of the sliding motion along the'spline shaft.
  • is rotatable to select a position ofthe type from which printing is to take place.
  • the t pe elements on the typewheel are arranged in two rings and these type elements are mounted in the typewheel in'such a manner as tobe adapted to be struck radially from the typewheel to 'efiect printing, the arrangement and mounting of the elements in the typewheel being the "same-as described in said BritishPatent No. 524,342.
  • the carriage 45 is traversable parallel to 'a platen 6!, and the typewheel is movable a-kiallyto bring one of the rings of type into printing position and to move a selected individual type element radially of the typewheel to effect printing in a manner now to be described.
  • the functions just referred to are'controlled from the code bars 23 in the manner described and claimed in United States Patent No. 2,346,- 944.
  • a cam (not shown) -on cam sleeve l2 releases a cam sleeve 63 to be driven for one revolution by shaft 5.
  • the function members '62 are showrrin Fig. 1
  • the electromagnet 69 is the printing electromagnet' and when operated releases a cam sleeve 'E l'for rotation through one revolution, the cam sleeve 10 being driven by shaft 5.
  • the typewheel M ' is normally located below the line of printing and must therefore be raised into the line of printing before printing takes place.
  • Cam sleeve m is formed'with a grooved cam H, the groove having the form of a sine curve, and through a cam follower 12 moving in'this groove, acts upon a lever'l3 pivoted on a rod 14 fixed in the framework (not shown).
  • the other-end of lever-"l3 acts upon an extension '15 of a frame 16 also pivoted on rod M.
  • the frame 16 carries a bail ll.
  • lever 13 The first movement of lever 13 is counterclockwise and thus bail 11 is moved counter-- clockwise.
  • a iever l8 pivoted on carriage A5 is formed with one end forked and engaging bail Hand is thus rotated clockwise.
  • the other end of lever 18 engages between flanges 79 of a mem-' ber fixed to the typewheel spindle 22 and as lever 78 is rotated clockwise the typewheel spindle is raised.
  • lever 'l3 acts upon a lever fill attached to a rockshaft 8i.
  • Fixed to the rockshaft al are levers 82 and 83 which enga e the ends of a frame M carrying an ink ribbon 85. The ink ribbon 85 is thus raised with the typewheel 4
  • the movement of the printing lever all allows a ccrrector lever 94 pivoted on the carriage -45 to be moved by a spring (not shown) towards the typewheel spindle 42 in such manher that a corrector member 95 on the end of lever 9d engages between teeth of a corrector wheel 96 fixed to the spindle 42 of the typewheel.
  • the cam H which acts on lever 13 to move bail "H to raise the typewheel into the-line of printing, is sine shaped so that 1 after printing has taken place the typewheel 4i is-again lowered to allow the last printed charac ter to be visible.
  • lever '53 allows levers 82 and 83 to rotate clockwise under the influence of a spring 91 to lower the ink ribbon frame.
  • Lever 83 is formed as a'bell crank one arm of which is engaged by a lever 98 acted on by the spring 91.
  • lever. .98 is reciprocated first in an anti-clockwise and then in :a clockwise direction, it reciprocates a pawl 99 of an'inkz'ribbontfeeding and reversing mechanism constructed as vdescribed in .U. 15. Patent No: 2,090,811.. 5
  • winding IOI is energised and the armature I02 rotated in a clockwise direction to disengage it from lever I03.
  • lever I3 is moved by cam II; lever I03 is caused by spring I04 to press against a pin I05 constituting an extension of cam follower. I2 moved in a simple harmonic motion by cam II.
  • Lever I03 is .pivoted at I03 so as to have a greater ratio than lever I3.
  • Lever I03 acts on extension I5 of frame I6 and moves bail II to a greater extent than it is moved by lever I3 and the lower row of characters on the typewheel is raised into printing position.
  • Armature I02 is fixed to a rock shaft IN on which is fixed a lever I08 linked to a bar I09.
  • the bar I09 extends alongside code bars 23 and forms a sixth code bar for determining the selection of such function members 62 as are only 'to be selected following the figure shift combination as described in U. S. Patent No. 2,346,944.
  • the letter spacing function member of the members 62 closes a contact to operate an electromagnet H0, which releases a cam sleeve III to be driven through a one revolution clutch from shaft 5.
  • a cam H2 on the cam sleeve III acts on a. cam follower H3 carried on a rack H4.
  • the rack H4 is mounted for longitudinal movement and is reciprocated longitudinally by .cam H2.
  • a pawl H5 carried on the carriage 45 engages rack H4 so that movement of rack H4 to the right moves the pawl H5 to the right and with it the carriage 45.
  • a pawl IIB also carried on carriage 45 engages teeth on a fixed rack III.
  • a steel tape I I is secured at one end to a post H9 on the carriage 45 and is wound round a spring drum I20 to which the other end is secured. Accordingly the carriage 45 is moved to the right against the force of the spring in the drum I20.
  • the mechanism for returning the carriage to the left in Fig. 1 is not shown in that figure, but is shown in Fig. 3.
  • the carriage return function member 62 closes a contact to operate a carriage return release magnet (not shown) which releases a cam I2I- for one revo-- lution.
  • Cam I2I acts on a bar I22 which lies between the racks H4 and H7 (Fig. l).
  • the bar I22 is mounted on pins I23 and I24 which engage in inclined slots I25 and I26 in the bar.
  • a lever I33 (Fig. 1), the other end of which moves a plunger I in a dashpot I35 to cushion the movement of the carriage.
  • a shoe I38 (Fig. 3) carried thereon engages the horizontal arm of lever I28 and rotates it clockwise, thus freeing shoulder I8I from the projection I2'I on bar I22 and allowing bar I22 to return to normal position.
  • the line-feeding function bar 62 closes a contact to operate magnet I3I which releases a cam I38 for rotation by shaft 5.
  • the cam I38 operates a lever I39 to which is linked a spring pawl I40 which acts on a ratchet wheel Hi to rotate the platen SI for line feeding.
  • Fig. 5 shows in curve A a graph of the motion of the typewheel and this curve A shows the motion of the typewheel through 21 radians in a fraction mT of the total time allotted to the rotary movement.
  • the typewheel is driven from shaft 33 through a clutch 34 and a shock absorbin coupling as described and'claimed in said U. S. Patent No. 2,382 668 and the interval of time 'It, out of the total interval T, is allowed for the energy of movement of the spline shaft 40 and the gearing connecting it with the typewheel.
  • FIG. 5 shows the shape of the cam II effecting the axial movement of the I typewheel and is consequently a graph of the vertical movement of the typewheel.
  • the point I42 represents the lowest and thus the normal position of the typewheel and the startinglpoint of the vertical movement. It willbe seen that the vertical movement may commence whilst the rotary movement of the typewheel is continuing but that the rotary movement has ceased before the typewheel has reached its highest point.
  • Curve B of Fig. 5' represents the outline of the printing cam 86 and it will be seen that printing takes place when the typewheel has been raised to its highest point. Thereafter the downward movement of the typewheel to leave the printed character visible commences and the rotary movement of the typewheel in consequence of a new positionin of the combination discs 28 may commence whilst the typewheel is being lowered to normal position.
  • a typewheel mounted in said carriage withitsaxis substantially at right angles to the axis of said platen, a gear wheel mounted on said carriage so as to be freely rotatable about said spline shaft,
  • a sleevekeyed tosaid spline shaft and movablewith said carriage a self aligning coupling connecting said gear wheel and said sleeve, gearing connecting said typewheel and said gearwheel, means for selectively rotating said spline shaft to select a type on said typewheel, means for printing from the selected type and means for traversing said movable carriage along said spline shaft for letter spacing.
  • Printing telegraph receiver comprising a typewheel. having the type thereon arranged'in a plurality of rows, means for rotating the typewheel selectively, means for selectively shifting said typewheel to bring a selected row of type into printing position including a plurality of levers of different ratios and operating connections from each of said levers for shifting said typewheel along its axis to an extent whichvaries according'to whether one or-the other of said levers is actuated, means for selectively actuating one of said levers to produce corresponding axial shifting of said typewheel, thereby bringing the corresponding row of type into printing position, and to return the typewheel into a position to leave the printed character visible, and means for printing from said typewheel when in printing position.
  • Printing telegraph receiver comprising a typewheel having the type thereon arranged in two, rows, means for rotating the typewheel selectively, means including two levers of difierent ratios and-operating connections from each of said levers for shifting said typewheel along its axis to an extent which varies according; to whether one or the other of said levers is actu- 1 atecl, means for selectively actuating one of said lever to produce corresponding axial shifting of said typewheel, thereby bringing the corresponding rowof type into printing position, and to return the typewheel to an extent sufiicient to leave the printed character Visible, a single cam for actuating both levers in an approximation to asimple harmonic motion, means efiective-for 5;. Page printing-c telegraphreceivercomprising.
  • a platen a spline shaitpara-llel-to the axis of said platen; a carriagezmovable. along-said spline shaft a typewheel having its axis, substantially-at right. angles to the axis-10f said: platen: and; haying; thereon, a; plurality, of rows of; type and. mounted. foraxial; movement. in said carriage, abail ex-v tending parallel. to vsaidr platen; and pivotally. mounted .ior movement about. an axis: parallel; to; itself; a .nrstylever :pivoted om said .:carriage-. n.
  • receiver 5 comprising. a;
  • typewheeh means for: selectively rotating; said.
  • typewheeL alever for moving saidtypewheei axe ially into: printing; position to print. one lineazoi;
  • means. for-starting-the rotation of'said-q shaft. after the lapse of approximately half the interval; allotted; to acomplete rotation of the typewheeir after the commencement of such rotatiom. means for arresting said shaft in said first, mentioned position, and means for printing. from said typewheel; when. in printing position.
  • Printing telegraph receiver comprising, a typewheel having; the type thereon arranged ,in' two rows-,1 means:v for rotating the typewheel selectively, twolevershavingdifferent effects and corresponding to the respective rows for moving the typewheel axially until the desired rowis inprinting position: and returning; the typewheel to an extent su-fficien-t to leave the printed: characterv visible, acam; acam follower attached; to the lever: of lesser effect, means forholdingsaid; cam followerin actuable-relation to; said. cam,- spring means for drawin t the lever. of greater: effect into actuable relation to. saidcam follower,- means for selectively retaining; the lever of greater effect against actuation by saidspring;-
  • 11 means, means effective for each character received to rotate said cam and means for printing from a row of type on said typewheel when said row is in printing position.
  • Page printing telegraph receiver comprising a rotatable platen, a spline shaft parallel to the axis of said platen, a carriage movable along said spline shaft, a typewheel mounted in said carriage with its axis substantially at right angles to the axis of said platen, a gear wheel mounted on said carriage so as to be freely rotatable about said spline shaft, a sleeve keyed to said spline shaft and movable with said carriage, a narrow member slidable on said spline shaft located between said gear wheel and said sleeve and havin slots in its opposite ends, the said slots being at right angles, key on said gear wheel and said sleeve respectively engaging in respective slots, gearing connecting said typewheel and said gear wheel, means for selectively rotating said spline shaft to select a type on said typewheel, means for actuating the selected type for printing and means for traversing said movable carriage along said spline shaft for letter spacing.
  • Printing telegraph receiver comprising a type wheel having the type thereon arranged in two rows, and means for selectively moving said type wheel axially from a print-exposing position to a printing position for a selected row and returning the same including a member connected to said type wheel to impart corresponding movement thereto, a cam follower parallel tosaid member, means including a rotatable cam for actuating said cam follower, a lever having an arm connected to said cam follower to move therewith and an arm engaging said member to move the upper row of type to the printing line, a second lever having its fulcrum closer to the cam follower than that of the first lever and with one arm engaging said member and the other arm engaging said cam follower at one side to be returned thereby, and spring means acting on the second lever to move the type wheel and place the lower row of type in printing position, the return movement of the cam follower returning the second lever to normal position against the action of said spring means.
  • Page printing telegraph receiver comprising a platen, a shaft adjacent said platen, a carriage movable along said shaft, a typewheel having thereon a plurality of rows of type and mounted for axial movement in said carriage, a bail extending parallel to said platen and pivotally mounted for movement about an axis parallel to itself, a first lever pivoted on said carriage and slidably engaging said bail for moving said typewheel axially, a gear wheel mounted on said carriage so as to be freely rotatable about said shaft, a sleeve movable with said carriage and keyed to said shaft, means connecting said gear wheel and said sleeve, means connecting said typewheel and said gear wheel, means for selectively rotating said shaft to selectively rotate said typewheel, means for selectively shifting said typewheel to bring a selected row of type into printing position including a lever corresponding to each of the rows of type and each lever acting differently upon said bail, a single cam for moving said levers in an.
  • Page printing telegraph receiver comprising a platen, a spline shaft parallel to the axis of said platen, a carriage movable along said spline shaft, a typewheel having its axis substantially at right angles to the axis of said platen and having thereon a plurality of rows of type and mounted for axial movement in said carriage, a bail piovtally mounted for movement about an axis parallel to itself, means engaging said ball for moving said typewheel axially, a gear wheel mounted on said carriage so as to be freely rotatable about said spline shaft, a sleeve movable with said carriage and keyed to said spline shaft, a self-aligning coupling connecting said gear wheel and said sleeve, gearing connecting said typewheel and said gear wheel, means for selectively rotating said spline shaft to selectively rotate said typewheel, means for selectively shifting said type Wheel to bring a selected row'of type into printing position including a lever corresponding to each of the rows
  • Page printing telegraph receiver comprising a platen, a spline shaft adjacent said platen, a carriage movable along said shaft, a typewheel having thereon a plurality of rows of type and mounted for axial movement in said carriage,'a
  • rpbail pivotally mounted for movement about an .carriage and keyed tosaid shaft, means connecting said gear wheel and said sleeve, means connecting said typewheel and said gear wheel, means for selectively rotating said shaft to selectively rotate said typewheel, means for selectively shifting said typewheel to bring a selected row of type into printing position including a lever corresponding to each of the rows of type and each lever' acting differently upon said bail, a single cam for moving said levers in an approximation to a simple harmonic motion during a complete rotation thereof, means for selectively rendering one of said levers effective when acted upon by said cam to move said bail to an extent sufficient to move the typewheel to bring th responding row of type into printing position and I to return the typewheel to a position in which the printed character is visible, means effective upon the receipt of each character to cause a complete rotation of said cam, means for printing from said typewheel when the selected row of type is type and out of such printing position to leave the printed character visible, means for actuating said lever in an approximation
  • Printing telegraph receiver comprising a typewheel having the type thereon arranged in two rows, means for rotating the typewheel selectively, means including a cam and two levers having different effects and corresponding to the respective rows for moving the typewheel different distances so that one or the other row is in printing position, depending upon which lever is actuated, means for selectively determining which of said two levers is to be actuated on each rota- 3o tion'of said cam, means effective for each character received to rotate said cam, and means for printing from a row of type on said typewheel when said row is in printing position.
  • Page printing telegraph receiver compris- 35 ing a rotatable platen, a spline shaft parallel to the axis of said platen, a arriage movable along said spline shaft, a typewheel mounted in said carriage with its axis substantially at right angles to the axis of said platen, a gear wheel mounted on said carriage so as to be freely rotatable about said spline shaft, a sleeve keyed to said pline shaft and movable with said carriage, a coupling member on said spline shaft between said gear wheel and said sleeve, means on said gear wheel and said sleeve respectively engaging said coupling member, means connecting said typewheel and said gear wheel, means for selectively rotating said spline shaft to select a type on said typewheel, means for actuating the selected type for printing and means for traversing said m'ovable carriage along said spline shaft for letter spacing.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Common Mechanisms (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
US572344A 1943-11-12 1945-01-11 Type wheel positioning mechanism for printing telegraph apparatus Expired - Lifetime US2462132A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB270139X 1943-11-12
GB803/44A GB580882A (en) 1943-11-12 1944-01-15 Improvements in or relating to printing telegraph apparatus
GB51244X 1944-12-05

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US2462132A true US2462132A (en) 1949-02-22

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US (1) US2462132A (enrdf_load_stackoverflow)
BE (1) BE472668A (enrdf_load_stackoverflow)
CH (1) CH270139A (enrdf_load_stackoverflow)
DE (1) DE917259C (enrdf_load_stackoverflow)
FR (1) FR936720A (enrdf_load_stackoverflow)
GB (1) GB580882A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906821A (en) * 1954-05-03 1959-09-29 Griffith Ronald George Printing telegraph apparatus
US3283876A (en) * 1962-05-14 1966-11-08 Siemens Ag Endless ink ribbon arrangement for typewriters
US4147438A (en) * 1976-04-21 1979-04-03 Ing C. Olivetti C., S.P.A. Serial printer for typewriters, teleprinters and data processors

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE956770C (de) * 1954-03-12 1957-01-24 Lorenz C Ag Zeichenabdruckeinrichtung fuer Blattfernschreib- und Bueromaschinen
US3307672A (en) * 1964-02-11 1967-03-07 Sam H Young Hovering printer having magnetically held type elements
DE1259521B (de) * 1964-12-23 1968-01-25 Licentia Gmbh Haartrockner fuer zustroemende Warmluft

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US865470A (en) * 1904-05-06 1907-09-10 John E Wright Printing-telegraph.
US1604110A (en) * 1926-02-10 1926-10-26 Harvey M Aronson Coding typewriter
US1731614A (en) * 1924-07-31 1929-10-15 Guy E Etherton Phonetic typewriting machine
US1884754A (en) * 1930-01-27 1932-10-25 Teletype Corp Printing telegraph
US2161840A (en) * 1936-02-18 1939-06-13 Western Electric Co Selecting and typing means for printing telegraphs
US2284666A (en) * 1938-03-03 1942-06-02 Teletype Corp Printing telegraph apparatus
US2329278A (en) * 1941-06-14 1943-09-14 Western Union Telegraph Co Printing telegraph apparatus
US2352643A (en) * 1941-09-20 1944-07-04 Teletype Corp Printing telegraph apparatus

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DE745913C (de) * 1934-07-19 1944-06-03 Hans Bodo Willers Waehlwerk fuer Ferndrucker

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US865470A (en) * 1904-05-06 1907-09-10 John E Wright Printing-telegraph.
US1731614A (en) * 1924-07-31 1929-10-15 Guy E Etherton Phonetic typewriting machine
US1604110A (en) * 1926-02-10 1926-10-26 Harvey M Aronson Coding typewriter
US1884754A (en) * 1930-01-27 1932-10-25 Teletype Corp Printing telegraph
US2161840A (en) * 1936-02-18 1939-06-13 Western Electric Co Selecting and typing means for printing telegraphs
US2284666A (en) * 1938-03-03 1942-06-02 Teletype Corp Printing telegraph apparatus
US2329278A (en) * 1941-06-14 1943-09-14 Western Union Telegraph Co Printing telegraph apparatus
US2352643A (en) * 1941-09-20 1944-07-04 Teletype Corp Printing telegraph apparatus

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Publication number Priority date Publication date Assignee Title
US2906821A (en) * 1954-05-03 1959-09-29 Griffith Ronald George Printing telegraph apparatus
US3283876A (en) * 1962-05-14 1966-11-08 Siemens Ag Endless ink ribbon arrangement for typewriters
US4147438A (en) * 1976-04-21 1979-04-03 Ing C. Olivetti C., S.P.A. Serial printer for typewriters, teleprinters and data processors

Also Published As

Publication number Publication date
CH270139A (de) 1950-08-15
BE472668A (enrdf_load_stackoverflow)
FR936720A (fr) 1948-07-28
GB580882A (en) 1946-09-24
DE917259C (de) 1954-09-27

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