US2306614A - Correction, comment, and finish marking system for dictation machines - Google Patents

Description

- Dec. 29, 1942.

CORRECTION COMMENT AND FINISH MARKING SYSTEM FOR DICTATION MACHINES 2 Sheets-Shet 1 Filed Oct. 1, 1940 Henry P Clau$n J O QQJ INVENTOK A'ITORNEYS 2 I H. 5. CLAUSEN I 2,306,614

- coImEo'rIoN', pomamr AND FINISH MARKING SYSTEM FOR DIcTA'rIofi MACHINES Filed Oct. 1, 1940 2 Sheets-Sheet 2 INVENTOR.

ATTORNEY 5 Patented Dec. 29, 1942 CORRECTION COMMENT, AND FINISH' MARKING SYSTEM FOR DIC'IA'IION MACHINES mm P. Ciaulen, White Plains, N. it, u

signor to The Gray Manufacturing Company, Hartford, Comm, a corporation of Connecticut Application mm 1, 1940, Serial No. 359,185

10 Claims. ((1179-1003) This invention is concerned with apparatus for marking phonograph records and particularly dictation machine records in a manner so that the transcribing operator will be informed oi the approach of a correction to be made in the dictation and to indicate the finish of a particular subject or letter.

The invention is disclosed herein in several forms as comprising a system for use both with the recording dictation machine and the reproducing or transcribing machine by means of which the dictator may indicate on the record, whether it be of the cylindrical or disc type, the fact that a change or correction has been made in the dictation and of the approach of the end of a particular piece of dictation.

This invention resides substantially in the combination, construction, arrangement and relative location of parts as will be described in detail below.

In the accompanying drawings,

Figure 1 is a diagrammatic view of one assembly of apparatus in accordance with this invention by means of which correction and finishing indications may be applied to the record during dictation;

Figure 2 is a diagrammatic view of a system in accordance with this invention by means of which the correction and finishing record indications as produced by the .system of Figure 1' are utilized in transcription;

Figure 3 is a diagrammatic view of another system for utilizing the record produced by the system of Figure 1; a I

Figure 4 is a modified system for the production of a record in accordance with this invention in systems where the dictation machine is remote from the dictating point;

Figure '7 when taken with either Figures 5 and 6 represent two additional systems for marking a record in accordance withf this invention corrections and the finish of a particular piece of dictation by applying markings to the record at the proper points by means of crayons selected as to color to serve as visual indicators to the transcriber of the location of correction marks and finish marks. I

In other systems of this type the dictation machine is provided with means through which correction and finish marks are placed upona forms of sound records such as for example strip 01' paper associated with the machine insuch a manner that whenever an indicator at tached to the traveling sound box reaches a point where a correction mark must be made the paper strip will be marked by some sort 01' marking device attached to the machine. This arrangement requires the association of I the marked paper strip with the record cylinder and the like so that when the transcribing operator receives it and places it upon the transcribing machine the paper strip is placed in the machine in association with a pointer which also travels with the sound box. In the operation of the machine during transcription when the pointer reaches the marked section of thepaper strip the transcribing operator will understand that before continuing the typing of the record it is necessary to learn the nature of the correction indicated.- This type of correction and finish indication is particularly applicable to the commonly known cylindrical type of records, but it is about to finish, and other simply operated ap-- paratus by means of which a transcriber may efliclently utilize these record indications during transcription.

The. exact nature of the invention will best: be appreciated by those skilled in the art by a dea tailed description of the invention in connection; with the drawings attached hereto. Referring first to the system of Figure 1, there is shown.

an apparatus by means or which correction'and finish indications are applied. to the disc record At this point it is stated as will appear as the reader becomes familiar with by the dictator.

the system, that it is equally applicable to either the cylindrical type. I

There is diagrammatically shownlat i Ithe record discwhich is made of any suitable mate-" the disc record I is attached to a vertical spindle 2 is over to the right and gradually translates to the left. Of course, the reverse movementof the apparatus may be utilized. In the actual apparatus the record stylus 4 is positioned close to the wheels 3, but in the diagrammatic showing of the various figures it is spaced therefrom for clearness in the drawings= Machines of this type are known, one of which is disclosed for example in pending application Serial No. 281,811, filed June 29, 1939.

The record making instrument or recorder is illustrated as comprising a stylus 4 of suitable and well known construction depending upon the nature of the record to be made, and a crystal operator or motor 5, of a type known for this purpose. When varying currents representative of sounds are applied across the crystal it causes movement of the stylus 4 to make a suitable record on the disc. The terminals of the crystal generator are shown connected to the primary of a coupling transformer 6, the secondary of which is connected to the output circuit of a triode vacuum tube amplifier I. The input grid of the triode is connected by the wire 8 to the movable contact of a single pole double throw switch operated by the relay I2. The contact of the switch 9 which is closed when therelay is de-energized, is connected to the secondary of a transformer III by means of which a microphone II is coupled to the input circuit of the triode I. The open contact of switch 9 is connected to the secondary of a coupling transformer I3, the primary of which is connected in the plate circuit of the triode vacuum tube I4. The input circuit of this triode is coupled by a transformer I5 to a signal source through its primary and the normally open double pole switch I6 likewise operated, by the relay I2. The switch I6 is shown in the position when the relay is ole-energized. A source of alternating current signal energy of constant amplitude and'of suitable frequency is coupled by a transformer l8 to the movable con tacts of the switch I6. A push button switch I9 is provided to complete the circuit to the relay I2 when desired. This switch is connected in parallel with a switch which includes a-pair of contacts for connecting an interrupter I! in series with the secondary of the'transformer I8 and the switch lfi'when closed. The interrupter I'l may be any one of a number of suitable known devices for'interrupting the alternating current at It may be for example a udinallyiz'Relay I2 is de-energized and switches i,-1.l.9.2a'nd 20. are in the position shown. The alternating current signal source is in operation,

as-is the interrupter. i-,the -microphone I I, with the result that speech ,currents are impressed through the transformer I0 upon the input circuit of the triode I. They The dictator speaks into are amplified and repeated by the triode and impressed upon the coupling transformer 6, and by it upon the crystal recorder 4-8. Thus the speech is recorded. Should the dictator make a mistake, or wish to insert a notation, he first closes switch 9, causing the energization of relay I2. Switch 9 then closes in the right hand contact and switches l6 close on their contacts. The speech input circuit to the triode is broken at switch 9 and the primary or transformer I5 is directly connected to the secondary of transformer I8 through the interrupter II. The result is that the alternating current supplied through the transformer I8 is impressed upon the transformer I5 and by it to the input circuit of triode I4. This triode amplifies and repeats the signal which is impressed through the transformer I3 upon the input circuit of triode I. This triode amplifies and repeats the signal which is then applied to the recording crystal through the transformer 6. The result is that the interrupted tone or signal current causes the recording of a characteristic record on the disc I. The recording 'of this record is continued as long as switch I9 turns to the position shown and switches I6 open.

The dictator may then proceed by talking into the microphone until it is necessary to make the next correction or comment, or until the particular piece of dictation being recorded is finished. As it is finished the dictator'operates switch 20 which by-passes switch I9 so as to again energize the relay I2, causing the operation of switches 9 and I6 as before. Switch 29 also short circuits the interrupter I9 so that the transformer I8 directly couples the signal source through the closed switches I6 to the primary of transformer I5. Thus the crystal recorder now records the tone signal continuously, that is without interruption in view of the fact that the interrupter I1 is out of circuit. Thus a different kind of signal is recorded on the record to indicate the finish of a piece of dictation as distinguished from a comment or correction in the body thereof.

There is illustrated in Figure 2 one form of system in accordance with this invention by means of which the record of Figure 1 is utilized in transcription. This record Iis placed upon the vacuum tube '25. The output circuit thereof is coupled by transformer 22 to a reproducing device such as a head phone 24 through a switch 23 which is normally closed as shown in Figure 2 when the relay 32 is ale-energized. The crystal reproducer 26 is coupled to the input of a triode vacuum tube 21. The output of this triode is applied through the coupling transformer 28 to a signal light 30 through the switch 29 which is normally closed when the relay I2 is deenergized.

I 8,803,614 r The. lamp 33 is bridged .by a variable condenser 3| forthe purpose to be described. The relay 32 24, switch 33 is open and with the reproducing machine running the transcriber hears the record to be typed or transcribed in the headphone 24. The crystal reproducer 23 is likewise reproducing the record on the disc a few turns in ad- 'may be energiaed'by means of a switch 33. It

is closed when the relay 44 is de-energized to the head set 33. The reproducer 43 hich is positioned in advance of the reproducer 34 as before, is coupled tothe input triode of the trans former amplifier 4|, theoutput is coupled to a transformer 42 to the head set 39 through an adjustable impedance 43. The switch 43 con trols the relay 44. In the operation of this system thetranscriber proceeds as with the arrangement of Figure 1. The transcriber will hear the record to be transcribed as picked up'by the reproducer 34 through the amplifier transvance with the record being supplied to the I '25 reaches a correction or finish record as produced by the apparatus of Figure l. The frequency of the current generated by this record whether it be continuous or interrupted is such that when applied to the tuned lamp circuit will cause it to glow. This apprises the transcriber of the approach of a correction or other comment if the lamp glows interruptediy and of the approach of the finish of the dictation if it glows continuously. The transcriber then closes switch 33 so that the relay opens the switch 29 and.

shifts the movable members of switch 23 to the contacts connected to the secondary of transformer 28. The effect of this is to connect the headphone 24 to the amplifier 21 so that the transcriber may hear the part of the record being reproduced by the reproducer 23. The correction instructions or other comments are thus heard and mentally noted by the transcriber.- The machine is then reset so that the stylus 4' is put back at the point where the transcriber was interrupted by the energization of 'thelight 33. It may be noted here that in a transcribing apparatus the two'reproducers may be incorporated into a single carrier so that they can be moved together and will remain spaced apart the proper amount. Switch 33 has of course been opened atthe end of the correction or comment,

so that the machine is now ready to continue operat on for transcription purposes. .When the light 33 again glows the transcriber. is warned of the approach of the time when the information previously noted is to be employed or \incorporated in the matter being transcribed.

It is not a partof this invention, but it may be noted that some suitable form of device may be emplo ed for facilitating the repositioning of the reproducers at the end of a correction or comment, so as to take up the dictation where it was left'ofi' at the time of the interruption. Thus with this apparatus not only is the transcriber apprised of a correction before it is to be made, but is also prevented from forgetting the correction by reason of the indication given when the lamp 33 is again energized.

The system of Figure 3 is another arrangement for utilizing the record produced by the system of Figure 1. In this system two crystal reproducers are used as before. The reproducer,

34 is connected to the input circuit of a vacuum tube triode 35. The output thereof is-coupled through a condenser 31 and the switch 38 which former 33 and switch 33. The reproducer 43 will also be picking up the record a few revolu tions in'advance of the, reproducer 34 but the output of the reproducer 43 is impressed by'the' amplifier 4| and transformer 42.-upon the impedance 43 which is adjusted so as to choke back the voice-frequencies to the extent where they will not be heard or be of a disturbing loudness in the head set 33. 1

At this point it may be noted that other well known tuned circuits may be employed in place of the variable impedance 43 for this purpose. However. when .the stylus of reproducer 43 reaches the correction or finish signal in the record disc I the frequency of the current generated .by the reproducer 43 and transmitted through the amplifier 4| and transformer 42 will reach the head set 34 because the impedance 43 will be tuned so .as to readily pass a current of that frequency. The transcriber is then apprised of the approach of a correction or the finish of the dictation and therefore closes switch 45, energizing relay 44, opening switch 38 at the contacts then engaged and.

closingv the right handblade of the switch on a by-pass. circuit around the variable impedance 43. Thus the transcribers headphone 33 will be disconnected from the secondary of transformer 36 and directly connected to the secondary of transformer 42 sothat the correction or comment may be heard in the headphone 39 without superposition thereon of any signal from the reproducer 34 I When the correction has been mentally noted the operator replaces the reproducers at the proper, point on the record disc I, having released switch 46 so that the dictation may proceed as before.

In Figures ,4 to 7 inclusive are shown systems suitable for use with dictation systems where the actual recording portion of the machine is remote from the point of dictation. -In large oflices systems may be used where each dictator is provided with a microphone and suitable control apparatus while the recording machines are at a remote point under the supervision of a central operator. be applied to such systems.

The manner of applying the invention to the recording apparatus is shown in Figure 4. The record disc i is on the recording machine at the remote point and the recording stylus and crystal generator 4-3 is coupled by the transformers 3 and 46 to the output circuit of the triode vacuum tube amplifier 41. The input transformer 48 is connected by a transmission line or cable as indicated by the dash lines in Figure 4 to the 1110- tation. station which is provided with the microphone 5i. This microphone is connected in serieswith a switch 53 which is open when the microphone is not in use which would then be The inventions herein disclosed may' use switch 50 closes. Switch I is in series with a switch 49 which completes the circuit back to the input transformer 48. Switch 4! includes a contact in series with a buzzer 52 and a battery, the buzzer being in series with the vibrating arm 53 controlled by the winding of buzzer 52. The vibrating switch 53- is bridged by a condenser to prevent sparking in accordance with well known practice. Independently coupled with the winding of the buzzer 52 is a winding 55 which can beshunted across the transmission line by the operation of switch 49 which is provided as another contact for this purpose as shown. In the use of this apparatus the dictator removes the microphone 5| from the hook so that switch 50 closes. He signals the central station by well known apparatus, not shown, that he desires to use the machine, with the result that it is set in operation so that disc I is re- A volving and translating as previously explained. He then speaks into the microphone to record whatever hev has in mind, and if he desires to make a correction or to indicate the finish of his dictation he operates switch 49 which disconnects his microphone from the circuit, completes the buzzer circuit and connects the winding II across the transmission line. Thus a continuous note is recorded on the record if he holds the switch operated or an interrupted note of constant frequency is impressed on the record if he alternately opens and closes the switch 49. Where a continuous note is to be recorded switch 49 need only be momentarily operated in view of the provision of a dash pot mechanism 49' connected thereto which functions to hold the switch operated for a predetermined period of time. This dash pot arrangement may be used as previously mentioned in the system of Figure l.

The apparatus of Figure 7 used in conjunction with the apparatus of Figures 5 or 6 represent two modified systems for automatically applying an interrupted signal to indicate correction as well as a continuous signal to indicate the finish. The system of Figure 4 is not particularly adapted formanually producing an interrupted signal when the dashpot arrangement ll is employed because of the resistance to rapid operation of switch 49 which it would afford. Therefore the systems of Figures 5 and '7 and Figures 6 and 7 are more suitable where two types of signals are desired.

The system resulting from the combination of the apparatus of Figures 5 and 7 will first be described. It is assmed that the wires a and b are connected by a transmission line or cable, the apparatus of Figure 5 being at the dictation point and the apparatus of Figure 7 being at the-central recording point. The microphone 58 is connected to the line through the condenser 59, hook switch 51 and switch 56. It is shunted by the impedance B0. A relay 84 controls the switch 56, as well as the switch 65, both of which are normally closed, but which will open when the relay is energized. The circuit through switch 65 continues through a push button switch 8| to a suitable current source to complete a circuit for relay 62. Switch 66 controls relay 62 also energized from that source. Relay 62 controls a switch 63 which provides another circuit for the relay 64. At the central recording station the transmission line 11-12 is coupled to the input circuit of a triode vacuum tube" by means of a pair of transformers I6 inseries. In the input circuit is a normally closed switch 'Il' controlled by a relay lot. The primaries of the transformers l5 and It are connected in series through a condenser II. A slow release relay 1' is connected to the primary of transformer I! as shown and to a current source I. which is grounded at II. A fast release relay II is connected to the primary of transformer II as shown and to the current source III. Relay II closes a normally open switch OI, the fixed contact of which is rounded and the movable contact of which is connected through a normally closed switch 82 to the movable contact of a switch 98. Switch 82 is normally in the position shown when relay I9 is tie-energized. Switch." is in the circuit of relay, I00 controlling switch ll. A slow release relay controls the switch 98 and is connected to the front contact of switch 02 and to the currentsource. The output of the vacuum tube II is coupled by the transformers I2 and I6 to the crystal recorder 5. The front contact of switch 14 is connected to the primaryof a transformer 91, the secondary of which is in the output circuit of the vacuum tube triode 9'.

The input circuit of this triode is coupled by transformer 95 to a suitable tone signal source comprising an alternating current generator of the desired frequency. In the operation of this system, it being assumed that the operator at the central point has set the disc I in operation upon a signal, is as follows:

The dictator removes the microphone from the hook switch If so that it closes thereby completing the transmission line circuit to the input of the amplifierv triode 13. As he speaks into the microphone the voice currents travel over the transmission line to the amplifier and recorder. As switch 51 closes a circuit from the current source 8| is completed through the slow release relay llover the line a through the impedance or voice choke coil ,through switch 51, through switch 56 and back over the line b to the fast release relay I! and thence back to the current source 80. The energization of the slow release relay 1' causes switch 09 to close and switch I! to disengage its back contact and engage its front contact. This completes a circuit'for relay .3 from-the grounded terminal to the current source 80 throughswitch 09 through the front contact of switch '2, relay '3 and back to the ungrounded side of the current source. Thus slow release relay .3 is operated to close switch 88. The apparatus remains in this condition until the dictator desires-to make either a correction record or a finish record on the disc I. During this time the circuit for relay "I through the switch 98 is open at the back contact of switch 82 so that the transmission line remains coupled to the input of the triode II through the switch 14. When the dictator desires to make say a correction or comment indication on the disc I, he

- close the correction switch 8| at his station,

completing the circuit torelay 62, which operates to close switch 63 and complete the circuit for relay 64. The energization of relay 64 opens switches 55 and 56. The opening of switch it breaks the circuit to the fast and slow relays 18 Thus switch 82 closes on its back concontinuously in operation. Thus the tone signal is recorded. At the same time switch I being opened the circuit to relay '2 is broken so that switch 63 now opens, opening the circuit to relay 6!, so that switches 56 and 65 close. The closin of switch 58 causes fast relay 18 to again operate to close switch 82 on its back contact. Relay 18 of course remains energized to insure that switch 99 remains closed. This operation of switch 82 breaks the circuit to relay I so that switch 14 againv closes on its front contact breaking the circuit to the tone signal source. The closing of switch 85 completes the circuit to the relay 62, switch 6| being still closed, so that the sequence of operations is repeated. Thus the apparatus operates to interrupt the recording of the tone 'signal so long as switch 6| remains closed. It can be provided, as in the case of Figure 4, with a dashpot so that it need only be momentarily operated to insure it remaining closed a predetermined period of time. Thus by this system of alternately operating relays an interrupted tone signal is recorded throughout the period that switch GI is closed to indicate on the record the approach of a correction or comment.

When the dictator reaches the end of his dictation he closes switch 60, completing the circuit to relay 64. The result is that switch 56, opens as does switch 65. The opening of switch 65 has no operational result at this time but the opening of switch 56 causes the fast release relay 1!, the switch 82 of which is closed on its front contact, to now close on its back contact. Switches 99 and 98 are closed sothat th circuit to relay I00 is completed operating switch I4 to its front contact so as to connect the tone signal source to the input of the triode 13. This condition continues as'long as switch 66 is closed, so that a continuc ous tone signal is recorded on the disc I. Switch 68 may also be closed manually or by means of a dashpot arrangement for the desired length of time. When it opens relay I9 is again put back in circuit because switch 56 closes unless in the.

meantime the dictator has hung his microphone on the hook-opening switch 51, which he will do if his entire dictation is completed. Slow release relays I8 and 83 are then de-energized and the system is ready for re-use at some future time. If he wishes to start a new set of dictation the closing of switch 58- as well as switch 65will put the apparatus in condition for dictation with re lays 62, 64 and I00 de-energized and relays 11, I9, and 83 energized. Thus this system provides a method of makingeither type of record marking from a remote control point. v

When the system of Figures 6 and '7 is used together the lines a and b are as before connected together by a transmission line or cable. It is not necessary to repeat the-description of the mechanism of Figure '7. The mechanism of Fi ure 6 consists of the microphone 58, condenser 58, impedance shunt 60 and hook switch 5T as before. In this case, however, the movable contact of switch 51 is connected through a switch 61 and a switch II to the line, both of which are closed. As before, when the dictator wishes to make a recording he signals the central station which sets the machine in operation, as well as the tone signal used and the dictator removes the microphone. from the hook switch 51 so that it closes. He then speaks over the line as before to cause a recording. The closing of switch 51 as before causes the energization of relays I8, 19 and 83, relay I00, of course, being de-energized because its circuilt through to the back contact of switch 82 is open. If the dictator wishes to make a correction mark on the record he pushes the button on the end of the Bear proach of a correction, 0n the other hand, if

the dictator wishes to indicate the finish of his dictation he simply opens switch II holding relay 19 de-energized, and hence keeping the circuit to relay I00 completed so that the tone signal I source is continuously connected to the input of the triode 13. Switch-1| may be held open for the desired period of time or may be provided with a dashpot like that of Figure 4, to hold it open a desired length of time. Thus this arrangement provides a modified method of applying correction or finish marks to a record at a remote central station from the dictation point.

I It will be noted that'the interrupted signal is continued during the inward and outward movement of the rack 68. This rack is pushed to the right and then released, sothat. the spring 10 returns it to the left during which period the gear 68 is rotated in opposite directions to cause intermittent opening and closingof switch 61. At the end of the correction mark the dictation proceeds since switch-61 is closed and relay I9 is energized so that the circuit of relay I00 is broken. At the end of the dictation the dictator simply replaces the microphone on the hook, opening switch 61 and leaving the apparatus ready for use at a future time.

.From the above description it will be apparent to those skilled in the art that the details of this invention may be readily varied in many Ways without departure" from the novel concept thereof. It is likewise apparent that the invention is not limited in its application to any particular type of recording or reproducing mechanism, nor any specific type of record material whether it be wax, a cellulose material, an electro-magnet recorder, or a,photographic recorder. I do not therefore desire to be strictly limited to the disclosure as given hereinfor the purposes of illus-' trating the nature and scope of the invention,

but rather to the claims granted me.

What is claimed is:

1. In a machine for reproducing recorded dictation, the combination including a record tablet having impressed thereon the dictation to be transcribed and signal records indicating corrections, comments and the finish of a, particular piece of dictation, a pair of reproducing devices engaging the record tablet at spaced points. and actuated therebyto reproduce electrical currents representative thereof, means connected to both of sa.id reproducers for converting the electrical currents into sounds, and means for preventing the electrical currents generated by one of said reproducers and representative of the dictation from audibly affecting said converting means while permitting electrical currents representative of said correction, comment and finish signals to operate said converting means.

2. In a dictation transcribing machine, the combination including a record tablet having impressed thereondictation to be transcribed having interspersed therein correction, comment and/or finish'indicating records, a pair or reproducers operated by said tablet for generating electrical currents representative of the records thereon, one of said reproducers-engaging said tablet in advance or the other, means connected to said reproducers for converting electrical currents into sounds, and means for preventing the advance reproducer from operating said converter unless it is in engagement with a correction, comment or finish signal record.

3. In a dictation transcribing machine, the combination including a recordtablet having im- Dressed thereon dictation to be transcribed having interspersed therein correction, comment and/or finish indicating records, a pair of reproducers operated by said tablet for generating electrical currents representative or the records thereon, one of said reproducers engaging said tablet in advance oi the other, means connected to the advance reproducer for reproducing the correction, comment and/or finish signalrecord, and means connected to the other or said reproducers for converting currents generated thereby into sounds.

4. In a dictation transcribing machine, the combination including a record tablet having impressed'thereon dictation to be transcribed hav-. ing interspersed therein correction. comment tablet in advance or the other, means connectedto the advance reproducer for reproducing only the correction. comment and/or finish signal record as a visible indication, and means connected to the other or said reproducers for convertingcurrents generated thereby into sounds. I

- 5. In a dictation transcribing machine, the combination including a record tablet having impressed thereon dictation to be transcribed having interspersed therein correction, comment and/or finish indicating records, a pair oi reproducers operated by saidtablet torgenerating electrical currents representative of the records thereon, one of said reproducers engaging said tablet in advance of the other, means connected to the advance reproducer for reproducing the correction, comment and/or finish signal record, means connected to the other of said reproducers for converting currents generated thereby into sounds, and means for disconnecting the sound converting means from its reproducer and connecting it,

to the other reproducer.

8. In a dictation transcribing machine, the combination including a, record tablet having impressed thereon dictation to be transcribed having interspersed therein correction, comment and/or finish indicating records, a pair of reproducers operated by said tablet for generating electrical currents representative of the records thereon, one of said reproducers engaging said tablet in advance of the other, means connected to the advance reproducer for visibly reproducing the correction, comment and/or finish signal record, means connected to the other of said reprooperated by said tablet for generating electrical ducers tor convering currents generated thereby into an audible indication, and means for disconnecting the sound converting means from its reproducer and connecting it to the other reproducer.

'1. In a sound reproducing machine, a record tablet having primary signals and correction, comment and/or finish signals recorded thereon in dlflerent frequency ranges, separate means actuated by the record tablet for generating cur rents representative 01' said records, separate means for converting saidcurrents into sensible signals, and selective transmission circuits connecting the generating means to the converting means respectively, whereby one converting means is actuatable by both signals and the other by one of said signals. Y

8. In a machine for transcribing dictation, a record tablet having recorded signals in two separate frequency ranges representing normal signals and correction, comment and/or finish signals, separate pick-up devices actuated by the record tablet for generating separate currents representative of the records thereon, a single means for converting said currents into sounds, and means for selectively transmitting said currents to said converting meanswhereby said converting means is only energized from one or said pick-up devices by the normal signal current and is only energized from the other of said pick-up devices by the other signal current. 9. In a dictation transcribing machine, the combination including a record tablet having impressed thereon dictation to be transcribed having interspersed therein correction, comment and/or finish indicating records, a pair oi reproducers currents representative oi the records thereon, one 01' said reproducers engaging said tablet in advance of the other, means connected to the advance reproducer for reproducing the correction,

comment and/or finish signal record only, means connected to the trailing reproducer for converting currents generated thereby into sounds, and means for connecting said last means to the advance reproducer to audibly reproduce the record being traversed by it.

10. In a dictation transcribing machine, the combination including a record tablet having impressed thereon dictation to be transcribed having interspersed therein correction, comment and/or finish indicating records, a pair of reproducers operated by said tablet for generating electrical currents representative of the records.

thereon, one of said reproducers engaging said tablet in advance of the other, converting means connected to both oi! said reproducers including signal current selecting means so that said converting means is actuated independently by the respective currents from the reproducers, and means for disconnecting the converting means from the trailing reproducer whereby the operation of the record being reproduced by the ad-

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