US2824169A - Automatic carriage return and line feed mechanism - Google Patents

Description

Feb. 18 1958 ANDERSON 2,824,169

AUTOMATIC CARRIAGE RETURN AND LINE FEED MECHANISM Filed April 29. 1954 2 Sheets-Sheet 1 H. A. ANDERSON 2,824,169

Feb. 18, 1958 AUTOMATIC CARRIAGE RETURN AND LINE FEED MECHANISM Filad April 29, 1954 2 Sheets-Sheet 2 THE QUICK BROWN FOX JUM PED OVER A LAZY DOG'S BACK l2345678 01 1/90 DTS SENDING,

THE QUICK BROWN FOX JUM'PED' OVER A LAZY DOG'S BACK l2345678 /fd DTS SENDING. THE QUICK BROWN FOX JUMPED OVER A LAZY/ 1 IN V EN TOR. $44M :4. final-Run BY 6 M United StatesPatent AUTOMATIC CARRIAGE RETURN AND LINE FEED MECHANISM Hilding A. Anderson, Lake Zurich, Ill., assignor to Kleinschmidt Laboratories, Inc., Deerfield, 111., a corporation of Delaware Application April 29, 1954, Serial No. 426,357

16 Claims. c1. 178-23) This invention relates to carriage return and line feed mechanism for page printing telegraph and like receiving printing machines, and more particularly to improved means for automatically conditioning such mechanism for operation.

Most printing telegraph messages are transmitted from previously prepared message tapes. The tapes are usually prepared by typing perforators which consist of a keyboard associated with a tape printing and perforating mechanism. As the tape is a long strip the operator need pay no attention to line length as is the case when the printing is done on a page in tabulated form and messages recorded in this way are only receivable on other tape printing equipment. Page printers are often used for receiving messages and as the standard line is 72 spaces long, signals for carriage return and line feed must be sent at the proper time.

Some perforators have end of line indicatorswhich inform the operator that the characters perforated will fill a line on the page and the operator can insert the signals necessary for carriage return and line feed operations of page printing receivers, but even with this improvement an operator sometimes fails to insert these signals, which omission causes all page printing telegraph machines in the line to lose the rest of the message.

Page printing telegraph machines are made with automatic carriage return mechanism but the majority of these have the disadvantage of overprinting the carried over character on the next printed line resulting in loss of the carried over character plus the over printed character. This is not too serious when the lost characters are alphabetical letters of a message. In most cases the lost letters may be interpolated from the arrangement of the rest of the letters of the word or by the meaning of the sentence in which the word occurs but, when the lost characters are numerals or letters of a code message, interpolation becomes more difficult and quite often impossible.

Among the prior art efforts toward a solution to the problem of overprinting characters on the next line has been to provide a mechanism automatically initiating a carriage return and line space function whenever the carriage has moved to within a predetermined distance from the end of a line and a non-printing function signal is received. Such a mechanism is intended to prevent overprinting on the next line by returning the carriage to its starting position within the time period required to perform one character printing operation, so that if the carriage return and line shift functions are initiated by receipt of a non-printing function signal, the carriage will have completed its return before the next signal is received. Mechanisms of this type do not present a completely satisfactory solution to the problem because, if no non-printing signal is received within the predetermined distance from the end of a line, overprinting at the end of the line will result until a non-printing function 2,824,159 Patented F eb. 18, 1958 signal is received and because the equal time periods for performing each function cause the maximum rate of time for recording of characters to be fixed by the time period required to safely accomplish a carriage return function. If carriage return time is decreased past a certain value to increase character receiving rate, the resultant jarring by the carriage increases the wear and the frequency of repairs and adjustments.

This invention is independent of carriage return speed or receipt of specific types of signals. The recording mechanism operates in a normal manner during the recording of an entire line of characters and the automatic carriage return and line shift functions are initiated when the carriage reaches the end of a line by receipt of any type of signal, and if, during the carriage return, a character printing signal is received, the line shift will automatically function to present a clear surface for the next line and. assure that the characters appear in their proper sequence. from top to bottom of the page. Thus the present invention eliminates overprinting of char acters at the end of a line and on succeeding lines regardless of the ratio between character printing time periods and carriage return time period.

It is the primary object of this invention to overcome the above described difiiculties by providing automatic carriage return mechanism coupled with automatic line feed mechanism so that characters are never lost by piling up at the end of a line or over printing on the next line.

It is another object of the invention to provide means in a telegraph page printer to automatically enable the line space mechanism and carriage return mechanism to function on receipt of any signal by the signal receiving mechanism after the carriage has moved to the end of a line.

It is a still further object of this invention to provide means in a telegraph printer whereby if a character is printed during return movement of the carriage, the line shift mechanism will automatically function to shift the recording medium so the next line of characters will be recorded on a fresh surface clear of previously recorded characters.

These and other objects of the invention will become apparent from a reading of the following description of a representative embodiment of the invention; the accompanying drawings, and the appended claims.

In the drawings:

Figure 1 is a perspective view of the mechanism of this invention viewed from the rear of a machine as disclosed in Kleinschmidt patent application S. N. 241,916, filed August 15, 1951, now Patent No. 2,773,931;

Figure 2A and 2B are detailed views of the carriage return selecting mechanism; and

Figure 3 is a representative telegraph message as printed by a machine of the type disclosed in Kleinschmidt Patent No. 2,773,931 incorporating this invention.

, The reference character 10 indicates a portion of teletypewriter typebar carriage as described in Kleinschmidt Patent No. 2,773,931. Specifically, the part 10 is a journal for the type selecting arm 12 which may be rotated to any of 32 selectable positions by the meshed helical gears 14 and 16. The gear 16 slides on the square shaft 18 which is'rotatably connected to a teletypewriter selecting mechanism as disclosed in the above mentioned Kleinschmidt Patent No. 2,773,931. The part 10, hereinafter to be referred to as the carriage, is moved to, the left, Figure 1, an amount equal to one letter space each time a printed character is selected. Carriage 10 will return to an extreme right hand position, its first recording position, any time a carriage re- Mounted ona bossll atthe top of carriage are two adjustable .stops20 and 22. These stops .20 and V 22. are flat plates with respective slots 24 and 26 running lengthwise. They are suitably fastened on boss 11 by means such asv screws 28 and:30 passing throughslotsg24pand 26. This enables stop 22=-to be adjustably. positioned to .strike theendi34 of the..lever;32 when thewca-rriage 10 moves'vto its 73rd type, position. and:willset:in:rnotion- -clockwise-movement,as. viewed from above," to the lever :32.

Two permutation code segments 52 and 54=may=be seen at the-extreme right side of thedrawing. "These: are two of the ifive segments of =the selecting mechanism disclosed inzKleinschmidt Patent No."2;773,931 hereinbefore cited. As viewed from the'right'of Figure 1, =the segment52 has been turned counterclockwise and indicates-aspace or no-current condition of the signalling code, while *the segment-54-is iinthe' mark or current position.

For-aclear understanding of the mechanism comprising this-invention ibis-necessary to briefly describe -howthe tteletypewriter"performs its carriage return and line feed operations upon receiving those particular coded signals. Lying alongside the coded segments 52 and 54 are two drop-in levers 56-and-58. Lever 56 is allocated to=--the -line-feed-operation and lever 58 to the carriage return. Reference may be ha'dto Figure 2A for specific details of this description. As viewed in the drawing, the front of the levers 56 and58- have notches 60 and 62 at'about their mid-sectionsand-the inner edge of these notches pivot against an edge ,of a retaining comb 64 (indicated, in

Figure 1 by a heavyline). To'theleft of 11otches'60 and "62-are recesses 68and69xwhieh are spaced to receive the ends of compression-coil springs'70 and '71 the opposite ends of which are held by-projections72 and 73 of .retaining comb 64. Thus it can be seen that drop-inlevers j56 and'58 have a counter-"clockwise'bias which holds' their right ends against code segmentsSZ and'54.

-Pivotallyjournal1ed onjthe shaft'74 is lever 76 (allocated to the lineifeed operation) and78 (.to the carriage return operation). The lever78 is mounted sothat its projection 80 will engage the end of 'the.drop-in lever"58 when .the latter is in'its normal or counter-clockwiseposition (shown by 'the phantom line .of illustration 'Figure 2A). The lever. 76 will engage the end of thedrop-in lever 56 when 'it is in its normal position. The lever .78 'has aflower leg"81 on the end of which is a roundedcam follower .82. A rearwardly -projecting armi84 'of'lever'78 has aspring 86 attached at 87 and to a-post (not shown) of the machine 'frame. Spring 86 imparts a-counter-clockwise bias to lever- 78 about shaft 74. The end of arm-'84 carries-apost SS-attached to-a vertical-rod 90' by means of-an eye 92.

:An eye'94atthe opposite-'end-of the rod is mounted .ona post 96 projecting from an arm of abell crank lever 98. The bell crank lever 98 is pivoted on a stationary part-of the-machine at 100=and its depending leg 1 02 has .pivotally attached a'linkconnector 104 tohold a-rod-1'06 which. is associated with t a clutch to operate the carriage weturnme'chanism. 'Thecam'follower'82on lever 18-rides 4 on a cam 108 which is mounted on the function shaft 110 which makes onezhalfa.revolutioneach timethemachine receives a signal group indicative of a printed character or function. Also carried on shaft 110 are cams 112 and 114 associated with the line feed mechanism.

The lever 76 is similar to lever 78; its forwardly extending arm 77 engages the end;of.the drop-in lever 56 (indicated by phantom lines in Figure 1). A lower section 79 ofsarm' 77 acts .as .a cammed-end suiface 1'1'7x to :press laterally on a fingen'118 on-adever120 to press lever laterally to thesleft. ,A-.. spring 121 ,is..connected 10.121 vcentralportion of.lever.;1-20 and to the :frame (not shown) to bias lever 120 to the right. The 03111,;f0110WBI 116. of lever 76 rides on cam 112 on function shaft 110. The vertical lever 1'20 ispi-voted to an arm of abell crank 124 at 122. Pivot 122,.has zenougmplay. to;- allow for a slight sideways movement of the lower end of the lever 120. This lower end of the lever 120 has an arm follower roller 126 cooperatively engageable with cam 114 when lever 1 20 is movedsideways into alignmenttherewith. "The 'bellcrank 1-24-ispivoted at 128, to-the frame, andhasan upwardly extending arm 130 pivoted to"a link"132' of "the line' feed mechanism. A spring =134'attached "to. arear projection 135 of bell crank 124 biases the crank'clock- WlS6.

1 Operation of carriage-return mechanism When code segments -52..and .54;. alongwith the other Ethree .thatmakeup .thecornplete permutation mechanism, are positioned .in clockwise.and counterclockwise direc- .,tions, resulting from. tthe, receptionaof .a group ;of signals .codedfor.the carriage.return,.there will "be; amotch ineach segment underneath the end.of.the:droprinlever. 58 (Figure 2A). This lever.,58,,-biasedgby. spring 71, willpivot on .the. edge of :comb 64,and..turn inia.counter-clockwise:di-

rection. The left end of the lever.;58 will swingoutwardly .thus disengaging thesend of thearm--80ias seen-in solid ilines of Figure 2A. ,The ifunctionzshaft-llO then; starts to rotateand, cam .follower 8.2 will .drop. .011 ithe .high;part of ,the cam w108.- allowing =assudden. counter-clockwise zmove- .mentto the lever-78 throughzthe biasing force oil-spring .86. Rod 92-x.will ,thus be pulled sup and s will turn bell ,crank 98 counters-clockwiseresulting in .anuabrupt displacement .of JOdi 106,10 ;the right. This :will: activate the ..elutchmechanismto return carriage 10to ;the right side of atheum-achine.

.IThe line feed-mechanism works; in a. similar manner to .:the carriageretummechanism;;when athe; drop=in; lever 56 iSttlIrnQdzcuuntencloekwise dueztoan. alignment ofrnot'ches :indieative ofza line feed:group:of signals, end177 of lever -76=iwillgbe disengagedrzfirom the drop=in :leve11and,xwhen lth ifunction shaft-110 revolyespthe :fOllOWCITllfiiWill drop :(zif Jillowing ;a-sudden.countereclockwise.movement of .ileyer 76duetozthe biasing .force =ofaspring-141. Dropping ,of'arm-77zrwill cause section 79 to:act:on:cam surface; 117 -Qfifinger;1=18.to moveilevertlztl'to therleftagainst the bias of spring 121 thereby positioning the roller 126 at-the :bottomzofthe2lever2120.toathe left-.and on the low part of .cam;114. The :continued-revolving of the function shaft ::110 will cause'lthe .cam lobe 115-to-press down 'on the zroller l26: causing ilever.120 =to 'move down and rotate :bell,:crank.:1ever3124:countemclockwise ato pull linki132 ,tothepleft. sAssociated' withzlink i132.:is. a pawl and ratchet .(notflshowny for. turning. the paper. feeding :rollers .for. feeding .a recording medium; suehas paper.

To complete-the mechanism requiredffor .the automatic .carr-iagereturnqand iline feed features alever 138 is sit- .uated at :the n'ght, .of .thespace. Whiclristraversed bycar- Iiage-.10. Lever ;138.is. piv.oted at..1,40 toawstationary part ofthe machineand at.thesextreme,.rightend has an upturne'd'tip136. Theother end 1.42.;of lever-138 extends downwardly to engagea tip v146 of. as-lateh trigger. 14.4

pivoted tothe stationary machine frame at 147. ,Trigger 144has'an arm'148 extending'tothe right'having a.spring 145"'attached ffltiiS midpoint "to" bias ithettrigger in a m blockwise direction about pivot 147. The arm 148 has a notch 150 at its outer end to engage projection 47 of latch member 46 under certain conditions to be described.

Operation of automatic carriage return and line feed When the carriage reaches the 73rd character space at the left of the machine the character for that position is printed and the stop 22 pushes the end 34 of lever 32 to the left. The turning of lever 32 pushes rod 42 to the right and moves the arm 48 to the right. Arm 48 engages notches 57 and 59 of the drop-in levers 56 and 53 and this right-ward movement of the arm 48 will slide the two drop-in levers 56 and 58 to the right (illustration Figure 2B). When the lower drop-in lever 58 is moved to the right the left end will disengage arm 80 of lever 78 allowing rotation of lever 78 and resulting in the hereinbefore described sequence of operations associated with the carriage return mechanism. Similarly the end of the drop-in lever 56 will disengage arm 77 of lever 76 and the previously described line feed operation will take place. To assure operation, the rod 42 is latched in its right hand position as now described. When rod 42 has been pushed to the right to set in motion the above sequence of operations latch member 46 moves to the right causing finger 47 to fall under notch 150 of the trigger 144. This notched end of the trigger will then drop down through the bias of spring 145 to hold latch 46, rod 42 and the arm 48 in their right hand positions.

When carriage 10 has returned to the right to the beginning of a line the adjustable stop 20 on top of the carriage will strike the end 136 of lever 138 to move the opposite end 142 to the left. End 142 strikes the shoulder 146 of trigger 144 to turn the trigger 144 counter-clockwise raising notch 150 out of engagement with latch 46. The rod 42 will then be moved back to the left by spring 50 and drop-in levers 56 and 58 will be shifted back to the left by arm 48 and positioned to engage the ends of levers 77 and 80 which, during the sequence of operations, have been restored by the cams 110 and 108 to their up positions. The machine is now conditioned to repeat the automatic cycle when the carriage again moves to the 73rd space.

As the machine of Kleinschmidt Patent No. 2,773,931, to which this specific embodiment has been adapted, requires approximately three times as long to return the carriage as to print a character, two character signals may be received during the carriage return movement. The automatic latch feature hereinbefore described, maintains the drop-in levers in their function transmitting positions throughout the carriage return movement, therefore each time a printing character signal is received during the carriage return movement, a character is printed and the line feed mechanism operated to advance the paper feed rollers and printing stock one line space. This feature of line feed during carriage return prevents overprinting of characters with the consequent loss of intelligence.

Having reference to Figure 3, the first line 152 and second line 154 of type have been printed in the normal manner with two carriage return signals and a line feed signal following the numeral 8. It is to be understood that a single carriage return and line feed signal is sufficient to start a new line when the machine is printing from a manually manipulated keyboard but when the printer is operating from a previously prepared message tape there is no pause between any of the successive signals and as hereinabove stated the carriage takes nearly three character periods to return, so a suflicient number of signals must be given for this operation.

The third line 156 of Figure 3 has been printed from signals received from a message tape wherein no carriage return or line feed signals have been interposed at the end of the line. When the carriage moved to the position to print the numeral 8, it conditioned the hereindisclosed automatic carriage return and line feed mechaae s, tea

nism and upon reeeivingthe signal for the numeral 9 the platen fed a line and the carriage started to return. The numeral 9 was then printed in the position shown by the reference character 158. Immediately after the 9. was printed the signal for 0 was received, again the platen was line fed and the 0 was printed in the position shown at 160. After the 0 was printed a character space signal was received, again the platen was line fed and the carriage completed its travel to the start of the line. If the latter signal had been one resulting in a printed character, the printing of that character would have occurred at the beginning of line 162. The new line 162 was then printed.

It can be seen from Figure 3 that the numerals 9 and 0 are not lost by overprinting as would be the case if line 162 had not been dropped three spaces, and by reading from right to left theintelligence of the message is retained.

It will be understood that the mechanism disclosed in the foregoing description provides an effective and desirable solution to the problem of receiving tape fed messages on a page printing receiver without incurring either overprinting of characters at the end of a line, should no carriage return signal be transmitted, or overprinting during the carriage return movement with resultant loss of intelligence of continuity in a message. This is accomplshed by incorporating an automatic carriage return and line feed function at the completion of a line of printed characters and further incorporating a line feed function each time a character is printed during a carriage return movement.

This invention will result in a printed message where all printed characters will be intelligible and the continuity of a message is not broken by overprinted characters or improperly spaced carriage return and line feed transmitting signals.

The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States Letters Patent is: i i

1. In a telegraph machine; a selector mechanism adapted to convert received electrical signals into mechanical movement; a recording medium; a movable carriage; means carried by said carriage and controlled by said selector mechanism to record characters upon said medium in accordance with the received signals; means for normally moving said carriage one character space for each recording operation; a first means responsive to a specific received signal for returning said carriage to its starting position; a second means responsive to a different specific received signal for advancing said recording medium to start a new line; mechanical initiating means for enabling said first means and second means to respond to any received signal between the time the carriage reaches an end of line position and when it reaches a start of line position.

2. A telegraph machine as defined in claim 1, wherein said initiating means is so located that enabling of said carriage return means and said recording medium advancing means is effected by said movable carriage when the latter reaches a predetermined position in its character spacing direction.

3. A telegraph machine as defined in claim 2, wherein means are provided so that when said recording medium advancing means is enabled by said mechanical means it advances a line each time any signal is received during the period of mechanically initiated return of said carriage. 4. A telegraph machine as defined in claim 1, wherein *7 saidiselectonmechanism.includesfirstelements responsive ,to-said specific rcceivedisignals ,and. second {elements re- .sponsive..to..said ,dfiierent i specific. received. signals, .said lfirst andssecond elements, being. also responsive .to said mechanicallinitiating :means.

5. Atelegrapnmachinenas defined in .cl'aim.4,.wherein said:selectingmechanism. includesa. group of notched permutation. members, .andin .which said tfirst, elementis pivotable into aligned notches of. said permutation members asia resultof receivingsaid specific signal,.-and in. which said second.elementispivotable intoother aligned notches of .said,p.ermutation members-as a result of receiving :said 'difierent specific signal, pivoting of said first and second elements causing said carriage, returnand lineadvancing means (to operate; animechanicalnreans adaptedio. .be actuated.byisaidmovable.carriage-to reposition said first and=secondlelements to eausesaidcarriage return and line advancing means to operate irrespective of specific electrical.signalling.conditions.

6. Atelegrapnmachine: asdefinedi-n claim including means to latchsaidfirst andseco-nd elements in theirnew positions and .means. to return .,said first and second elements tottheir:normaLpositions .when: said carriage has returnedto. the start =of-a line.

7. Atelegraphmachine\is,defined in claim 6, wherein said. latching means is caused .to-be-locked .by saidcarriagewhen .theilatterwisiniits last charactenposition of a line and. wherein saidlatching means -is caused to be unlockedwhen said carriage isinj-its start of line position.

. 8.. A telegraph, printingrmachine comprising: a frame; recording means; a carriage movably mounted on--.said .frame; means. for. moving said carriage; one character. space for. each recording :operation; means including; code. segmentsfor receiving andconverting character and-function indicative electric signals to coded predetermined permutative settings of segments; means controlled by-said coded segments'and said mov-ablencarriage :and including elements engaging andresponsive-to specific code settingsof said segmentsqtoadvance :therecording means .one, line :spaceand toreturmt-he carriage to :the starting position of aline; mechanically actuated means carried on said .frame, cooperating Withsaid elements and operating therethrough to returnzsaidvcarriage. andit-oshift said recording means onelineind-ependentlyof a carriagereturn signal. 9. In a printing telegraph machine a recording medium .feeding roller; a movabletypebar carriage; lineqspace mechanism to advance said feed rollerna carriage return mechanism, a character space-mechanism; electric signal resopnsivegrmeans :inluding .-a;. group of; selector members .and a group of'levers adaptedtozcoact with said selector members and ,co-actingwith said line space, carriage re- .turn, and character. space mechanisms tolselectively enable said mechanisms to .performztheirspecific functions according to a received electric :signal; mechanical means actuated by saidcarriage at onelimit of itspath' of move- ,ment andinterconnected with theioneof said levers co- ,acting With-said linespace mechanism and with the one of said levers .co-acting With said carriagelreturn mechanism to mechanically :shift. such two levers independently of a received electrictsignal to enablesaid line space mecha nism and-said carriage return'mechanism to function upon rreceipt of any .signal received by the signal responsive means, said mechanical means including a latching means 'to maintain such two leversin their shifted positions until :the carriage is returned to itsopposite limit postion.

10. An automatciline feed and carriage return mecha- :nism for a telegraph printer including an electri-csignal actuated line feed-and carriage return mechanism and a movable carriage disposed in a frame comprising: engagring-means carried by :said frame and-adapted-to be moved zfrom a1 first position to a'second-position by said carriage moving past a predetermined"position,to engage said ;signal actuated line feedandca-rriage returnmechanism to -mechanicallyenablesaidymechanism to be operated to .performiadine feed and carriage. returntunction.up on.re

wceipt, of .anwsignal ,by said .Zsignal, receiving mechanism betweemthe timeithat said .carriage moyes pastthe .predetermined position and is returned to its start position.

ll. i An automaticlinefeedand carriage return mechanism, as set-iforth in claim, --1,0,-;.further comprising latching m n ic ing'w thanM l ngsaid.e ag ng mean as positionedi bysaid carriage-moving; pasta predetermined po ition, un il-said: carriag has -been return lo a lin start .pQsition; whereby (anyssig-nal .--r eceived--; during: the carriage return movement willresultin aZline feed operation.

' 512.1Inaan automatic line feed and 'carria'ge returnmechranism as zseh-forthdn. claim 11: latch release means reooperatingiwi'th :saidrlatching meansandcactuated byzsaid carriage ;upon :its :return to t thev line start position to .unlatch. saidengaging fmeansaandmeans connected to; and biasing :saidaengaging:means-totthe said ifirst ziposition.

.13. In 'combinationxwitht a;=signal actuated receiver; a telegraph print-er including-1a signal actuated :line space and':.carriage returmmechanism and a-.movable carriage disposed rilli aifframe, -rneans for :elfecting automatic actuation-40f said .line space and .carriage' return-.mecha- :nisms .icomprising means disposed on said printer in i a normal:,-inoperative :positiomand .adapted .to be reposi- :tioned by said carriage when the carriage moves past a predetermined -'location to. .engage said signal. actuated line feedzand carri'age-ireturn mechanismito mechanical- ;ly. enable saidmechanismwto be :operated to perform a line? feed and .carr'iage-ireturnofunction.upon; receipt of every subsequent signal byhsa'idwsignal receiving .mechasaid carriage:Iteturrtganddine-feed means simultaneously operative .uponaevery.selective setting of saidipermuta tion device duringrthe pcriod fromr-the timezsaid movable carriageireaches; the-:end Of a line :position until it has beenreturnedtothe start of a lineeposition.

315. A-telegraph printingmachine comprising: amovable carriage, a selectively, settable permutation device having a plurality of settingzcombinations corresponding to gcharacters andsmaclline functions, a'first 'means responsive to; one 5 of said -setting combinations for .accomplishing agcarriagemeturnfunction, assecond-means responsive to a second of said setting combinations for accomplishing a line; feedrfunction, and a;third means renderedzoperablevby:said carriage reaching-the endof a line fon enablingsaidfirst and second means to accomplish carriage return and line feed 'functioniorevery selective :setting EOf said permutation device occurring duringtheaperiodifremtthe time said movable carriage reaches .theend tol? a' line position until it has been returned-to the start of a line position.

'16? In a printing telegraph machine operated in response to coded-signal conditions and adapted to record. characters in transverse lines on a record medium; a carriage movableforfcharacter spacing, means for feeding said record medium instep for linespacing, means for returning said carriage to its, start-of-lineposition, and means rendered effective when said carriage reaches its end-o f-line position and remaining effective until said carriage reaches its start-oflineposition for causing-said carriage return means and said feeding means to be operated incident to any coded signal condition to return said carriage to its start-of-line position and assure that each character printed after the carriage reaches its endof-line position and during the carriage return will not be overprinted by a succeeding line of characters.

References Cited in the file of this patent UNITED STATES PATENTS Madsen May 10, 1955

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