July 23, 1957
`
`H.R.VAN DEVENTER ETAL
`2,800,530
`TELEPHONE ANSWERING AND RECORDING DEVICES
`Original Filed Deo. 17, 1949
`6 Sheets-Sheet L
`
`----
`
`INVENTORS.
`
`HAftRY ltVA/1//),EV~NTER
`r./OHN ,;;,I . .5HIYEC/
`B
`PAULC.SAI/..EY
`y ya,,, IJ..wtAT1:ut. &, ~
`ATTORNEYS -
`
`Motorola Solutions, Inc., Ex1021, p. 1
`
`

`

`July 23, 195 7
`
`2,800,530
`H. R.VAN DEVENTER ETAL
`TELEPHONE ANSWERING AND RECORDING DEVICES
`Original Filed Deo. 17, 1949
`6 Sheets-Sheet 2
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`PAllt. C. BAILEY
`By Yeut JJ~ i .~
`ArroRN£Y.S.
`
`Motorola Solutions, Inc., Ex1021, p. 2
`
`

`

`July 23, 195 7
`
`2,800,530
`H.R.VAN DEVENTER ETAl
`TELEPHONE ANSWERING AND RECORDING DEVICES
`6 Sheets-Sheet 3
`Original Filed Dec, l7, 1949
`
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`Motorola Solutions, Inc., Ex1021, p. 3
`
`

`

`July 23, 195 7
`
`2,800,530
`H.R.VAN DEVENTER ETAL
`TELEPHONE ANSWERING AND RECORDING DEVICES
`Original Filed Deo. 17, 1949
`6 Sheets-Sheet 4
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`Motorola Solutions, Inc., Ex1021, p. 4
`
`

`

`July 23, 195 7
`
`2,800,530
`H.R.VAN DEVENTER ETAL
`TELEPHONE ANSWERING AND RECORDING DEVICES
`6 Sheets-She~t 5
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`PAUL. C.BAtLEY
`BY YtacP~tf,,a._J.
`ArroRNEY-;;,r
`
`Motorola Solutions, Inc., Ex1021, p. 5
`
`

`

`July 23, 1957
`
`2,800,530
`H.R.VAN DEVENTER ETAL
`TELEPHON8 ANSWERING AND RECORDING DEVICES
`Original Filed Deo. 17, 1949
`6 Sheets-Sheet 6
`
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`Motorola Solutions, Inc., Ex1021, p. 6
`
`

`

`United States Patent Office
`
`2,800,530
`Patented July 23, 1957
`
`1
`2,800,530
`TELEPHONE ANSWERING AND RECORDING
`DEVICES
`Harry R. Van Deventer and John J. Shively, 1'!"ew York,
`N. Y., and Paul C. Bailey, Ivyland, Pa., ~ssignors, by
`mesne assignments, to Telephone Answermg and ]_i:e ..
`cording Corprnratiii:m, New York, N. Y., a corporafion
`of Delaware
`Original application December 17, 1949, Serial No.
`133,506. Divided and this application January 9, 1952,
`Serial No. 265,632
`24 Claims. (Cl. 179-6)
`This invention relates to telephone answering devices
`which may also be used to record messages received over
`a telephone line circuit and is of the type using records
`which may be of any desired type, and is a division of
`application Serial No. 133,506, filed December 17, 1949.
`A record may be made, hereinafter termed a "talkout
`message" and will be delivered to the calling party via the
`telephone line. Then, if desired, the calling party may
`speak and the incoming speech will be recorded on an(cid:173)
`other record, which the user of the device can play back
`at will.
`A recording device to be used in conjunction, with a
`telephone circuit for the purpose of answering said tele(cid:173)
`phone and recording the received message in the absence
`of persons in its vicinity, should have many features not
`common to ordinary recording and playback devices.
`Said features, to be described, relate not only to the ~e(cid:173)
`chanical efficiency of the apparatus, but also to the sim(cid:173)
`plifying of its operation and to the safety of the operator,
`the apparatus and its appurtenances, keeping in mind the
`fact that the device will be used principally by persons
`mechanically and electrically unskilled.
`It is further desirable that, despite the compact form
`the device must assume, repairs, when necessary, be
`readily accomplished without the necessity of removing
`the instrument from its installed location or completely
`disassembling the apparatus to replace a part.
`Objects of the invention are:
`To provide a telephone answering device that can be
`used with a telephone instrument, the latter being a sep(cid:173)
`arate unit, so that any standard telephone instrument
`may be connected to said device by means of the usual
`cord and a plug or terminal strip. No changes in the
`interior wiring of the telephone are necessary.
`To provide means in the device for switching said sep(cid:173)
`arate telephone instrument so that the transmitter thereof
`may be used as a microphone for the answering device
`for the purpose of recording, and the receiver thereof used
`as a speaker for the purpose of listening to the playing
`back of messages recorded by the answering device.
`To provide means in said answering device for switch(cid:173)
`ing said telephone instrument to a telephone line cir~uit
`so that while used as a normal telephone the conversat10n
`over said line circuit may be recorded in said device.
`To provide means in said answering device for switch(cid:173)
`ing said telephone instrument so that when it is used as
`a normal telephone, there will be nothing else in the
`answering device circuit connected to the telephone line
`to disturb the measured balance thereof, and so that a
`wire chief in testing the line to which the answering de(cid:173)
`vice is connected will obtain the same reading as that of
`a line connected to a standard telephone.
`To provide means whereby, when the answering dev~ce
`is being used to answer incoming calls, the telephone m(cid:173)
`strument with its associated ringer is disconnected from
`the circuit and a relay, known as the ringing relay with
`
`5
`
`15
`
`25
`
`2
`its associated condenser, is substituted, said relay and
`condenser having the same effective values as the ringer
`and condenser in the telephone instrument so that when
`the device is left to answer incoming calls, the wire chief
`in testing the line to which the device is connected. will
`obtain the same reading as that of a line connected to a
`standard telephone.
`.
`.
`.
`As the telephone is disconnected when the machme 1s
`connected to answer incoming calls, it is an important
`10 object to provide means on the device which duJ?licat~s
`the normal function of the telephone hook switch m
`placing an impedance across the line to operate the
`supervisory relay ( or its equivalent on dial systems) at
`the exchange when the device answers an incoming c_all.
`To provide improved means, in one form of the device,
`for adjusting the point at the end of the talkout messa:!5e
`where a shift of circuits occurs from playout to record-m.
`To provide a further improved method whereby no ad(cid:173)
`justment is required at either the start or the. end of the
`20 talkout message regardless of the length o~ said messa~e.
`To present an improved method for fixmg the starting
`point of the talkout record when ready to record same.
`To provide a tone warning signal and means ~or re(cid:173)
`peating same as an integral component of the d~vice.
`To provide a combined timing means for cyc!Ical!y !e-
`peating the tone warning signal with means for tim:ng
`of the length of the recording phase of the answenng
`cycle.
`.
`.
`.
`.
`To provide a method of constructmg said timmg means
`30 whereby a tone signal is sounded immediately as the rec(cid:173)
`ord-in phase of the answering cycle be~ins_ and_ at pre(cid:173)
`determined time intervals thereafter, said time mtervals
`being adjustable through a limited range. .
`To provide means whereby a tone warmng used as a·
`35 signal to the calling party to begin speaking, is impre~sed
`on the terminal groove of the talkout record at the trme
`said record is recorded.
`To use a simple and economical means, such as a small
`motor, for driving the recording arm transversely across
`40 the record.
`To furnish as a safety feature, indicating means where(cid:173)
`by visual evidence is shown the operator of t~e devf ce
`when said device is properly set up to answer mcommg
`calls.
`To provide an improved cycle of operations in a device
`of the character described.
`To provide an improved combination limit switch and
`timer in a device of the character described.
`The invention is herein disclosed by way of illustra-
`h
`I
`tion as embodied in a disc record type phonograp .
`t
`will be understood, however, that many features herein
`described are applicable to other types of phonographs
`such, for example, as those employing wire and tape rec-
`55 ords. The modifications necessary to adapt many fea(cid:173)
`tures of the invention as herein disclosed to such wire and
`tape recorders are obvious to those s~lled i~ the a!t and
`therefore not described herein, the mvent10n bemg as
`defined by the appended claims where applicable to any
`60 type of sound recording and reproducing apparatus.
`In the accompanying drawings:
`Fig. 1 is a side elevational vi~w (wit~ som~ parts cut
`away) of an instrument emb_odym'? the mven_t10n;
`Fig. 2 is a top view of the mvention shown m Fig. 1;
`Fig. 3 is a detail view of the playback ar~ post and
`indicator switch used in the instrument shown m the fore-
`going figures;
`.
`.
`Fig. 4 is a detail top view of the arm shown m Fig. 3
`and shows a starting spring applied to said arm and the
`70 terminal groove engaged by the reproducer carried by
`said arm;
`Fig. 5 is a side view of the arm Fig. 4;
`
`45
`
`50
`
`65
`
`Motorola Solutions, Inc., Ex1021, p. 7
`
`

`

`2,800,580
`
`5
`
`3
`Fig. 6 is a view of an alternate means constituting the
`terminal groove for the reproducer Figs. 4 and 5;
`Fig. 7 is a view of the means provided for manually ad(cid:173)
`justing the position of the playback arm shown in the pre(cid:173)
`ceding figures;
`Fig. 8 is a side view partly in section of the recording
`arm and driving mechanism therefor used in the instru(cid:173)
`ment shown in Figs. 1 and 2;
`Fig. 9 is a top view of the arm drive. shown in Fig. 8
`with the arm 25 removed;
`Fig. 10 is a detail view of the means for making the
`terminal groove in the talkout record shown in the pre(cid:173)
`ceding figures;
`Fig. 11 is a front view of the timer used in the in(cid:173)
`strument Figs. 1 and 2;
`Fig. 12 is a side view of the timer shown in Fig. 11;
`Fig; 13 is a wiring diagram of a complete instrument
`embodied in the invention;
`Fig. 14 is a diagram illustrating the sequence of the
`operations of the instrument and instrumentalities shown
`in the preceding figures; and
`Fig. 15 is a detail view of the push button mechanism
`used in locating the position of the recording arm when
`same is used to record the talkout record.
`GENERAL DESCRIPTION
`Referring to Fig. 1, the numeral 20 denotes a chassis
`upon which are mounted the components of the device,
`except the telephone instrument. This chassis may be
`provided with a cabinet, which may assume any desired
`form, the cover or lid thereof being shown as 21; the four
`sides, separately removable, are indicated at 22. Upon
`the top of the chassis are mounted the large turntable 23,
`the small turntable 24 (hereinafter referred to as the talk(cid:173)
`ont turntable), the recording arm 25, the playback arm
`26, and various controls to be presently described.
`The large turntable 23 is partially surrounded by a
`false top 27 upon which are located the recording arm
`rest 28, the playback volume control 29, the push button
`30 for fixing the starting point of the talkout record, the 40
`knob 31, as shown in Figs. 2 and 10, for making the ter(cid:173)
`minal groove at the end of the talkout message. These
`parts will be presently described.
`A telephone 32, Fig. 13, is separate from the machine
`and connected thereto by the usual telephone cord. This
`telephone instrument may be of any suitable construction,
`preferably of the so-called French type and is complete
`with the usual hook switch, ringer, handset consisting of
`transmitter and receiver, induction coil, condenser and
`other parts usually found in standard telephone instru(cid:173)
`ments.
`
`4
`own weight, to ride down its slope on roller 40. The
`height of blade 41 is so adjusted that at its lowest point
`and with relay 45 energized, the needle 46 of the play(cid:173)
`back element is clear of the talkout record 47.
`It will be seen that, when the playback arm has traveled
`across the record 47 in its normal manner and relay 45 is
`energized in a manner hereinafter clescribed, said play(cid:173)
`back arm will be raised from the record and returned to
`a position above the starting point of the recorded mes-
`10 sage thereon, said position as shown in Fig. 7 being lat(cid:173)
`erally adjustable, in one form of the device, by means
`of a screw 48 and knob 49.
`From the foregoing it will be evident that the arm 26
`is mounted for horizontal and vertical movement over
`15 the record 24 and that in starting position the reproducer
`needle 46 is in engagement with the record.
`When an incoming call operates relay 99, thereby en(cid:173)
`ergizing relay 96, the T. 0. motor 97 is energized through
`contacts 96-E and back contact cf 45-A, said motor
`20 moving the record 47. The needle 46 has been resting on
`the unrecorded area found at the outer edge of all disk
`recordings, and said needle moves inwardly because of the
`fact that arm 26 moves in a radius longer than the tangent
`from its pivot point 34 to its circle of contact with the
`25 record, and engages the sound track 55. At the end of
`this recording ( or at the end of the signal recording 56
`as hereinafter described) the control means 41 operates
`to lift the arm 26 to permit same to return to an inter(cid:173)
`mediate position immediately above its starting position;
`30 when in said intermediate position the needle 46 is held
`out of contact with the record, and is only lowered to
`make contact therewith when relay 45 is disengaged at
`the end of the answering cycle.
`The arrangement just described insures that when the
`35 arm drops at the beginning of a talkout message, the nee(cid:173)
`dle 46 strikes on the plain surface 47 A of the record and
`not in the recording grooves 55. This prevents damage to
`the recording which would otherwise occur from repeated
`dropping of the needle 46 thereon.
`In the same form of the device, when the arm 26 has
`traversed the message recorded on record track 55, ad(cid:173)
`justable means must be provided to operate a switch 50
`which is located inside of the arm 26 and has an operat(cid:173)
`ing plunger 50A extending through the rearward side of
`45 the arm. The adjusting means as shown in Fig. 7 com(cid:173)
`prises a rotatable cam 51 with a varying edgewise thick(cid:173)
`ness which when turned by a lever 52, has the effect of in(cid:173)
`creasing or decreasing the distance the playback arm 26
`must travel before the switch 50 is operated by the trans-
`50 verse movement of said arm. This provides an adjustment
`for talkout messages of varying lengths.
`In Figs. 4 and 5 is shown a means for accomplishing
`the operation of the switch 50 without the need of the
`manual adjustment 51, 52 above described. These fig-
`55 ures also disclose means for eliminating the manual ad(cid:173)
`justment of the starting point of the talkout message.
`The needle 46 of the playback arm 26 is shown as
`resting in the clear area 47 A on the outer edge of the
`record 47, while the arm rests against a flat spring 53,
`60 the tension of which is adjustable by means of a screw 54.
`While the machine is idle, the needle 46 is held in the
`clear. area 47 A by friction, but when the turntable 24
`begins to move, the friction is overcome by the tension
`of spring 53 which urges the arm across the record. The
`65 spring 53 exerts only a slight pressure and the arm 26
`leaves the spring soon after entering the first groove of
`recording 55. The spring 53 is used mainly to insure
`operation with records of varying surface characteristics.
`After traversing the record in the usual manner, the needle
`70 46 of the playback arm 26 enters a comparatively sharp
`spiral groove 56, hereinafter termed the terminal groove,
`which is made after the talkout message 55 has been
`recorded in a manner to be presently described. The
`terminal groove 56 has · the effect of speeding up the
`75 H·ansverse motion of the arm 26 across the record so that
`
`Cyclic control mechanisms
`T~e playback arm 26 is pivoted vertically in its sup(cid:173)
`portmg member 33 and horizontally in its post 34 as
`shown in Figs. 1 and 3. Supporting member 33 is at(cid:173)
`tached to a hollow shaft 35 which slides freely in post 34
`so that the playback arm may be raised to the higher plane
`of the large turntable when necessary to play back mes(cid:173)
`sages which have been recorded thereon, said function to
`be presently described.
`The playback arm 26, as indicated in Fig. 3, is held
`in its raised position by means of a spring pressed ball 36
`which is forced into a groove 37 when the arm is raised.
`A similar groove 38 holds the arm down in its lowest
`position, at which position a switch 39 is operated for
`a purpose hereinafter referred to.
`As shown in Fig. 1, a roller 40 is secured beneath
`the playback arm 26 at a point about half way between
`the two ends thereof. Said roller rides on the upper edge
`of the blade 41.of a lever 42. Lever 42 is hinged at its
`forward end and is contacted at its opposite end by an ad(cid:173)
`justable finger 43 which is attached to the free end of the
`armature 44 of a relay 45. Blade 41 is so constructed
`that its gradient, with relay 45 energized, is of sufficient
`angle to permit the· playback arm 26, by means of- its
`
`"'
`
`Motorola Solutions, Inc., Ex1021, p. 8
`
`

`

`~,S00,530
`5
`a finger 57 as shown in Figures 3 and 5 is urged into en(cid:173)
`gagement with switch 50, which latter is adjusted so that
`it will be operated at the extreme end of the usable part
`of the record. Switch 50 is in the same effective posi(cid:173)
`tion in the wiring circuit, Fig. 13, with either one of the
`above-described operational arrangements.
`From the foregoing it will be evident that with the
`second-described arrangement, a talkout message of any
`length within the limits of the record, may be made with
`no adjustments necessary at its -starting points. The rela- IO
`tive pitch of the sound track 55 and the terminal groove
`or signal track 56 may be anything desired and the pitch
`of such tracks could be alike except that if 56 is the
`same pitch as 55 too much time will be lost after 47 ends
`and the operation of the reproducer ceases.
`It is there(cid:173)
`fore preferable that track 56 may be completed within
`1 ½ to 2 revolutions of record disc 22 to cover the dis(cid:173)
`tance from the end 47B of the sound track, to the center
`portion 56A of the record blank which is not used. The
`greater the pitch of track 56, the sooner the operation of 20
`the talkout operation is concluded after the recording on
`55 is delivered.
`An alternate form of obtaining a quick movement of
`arm 26 upon completion of the talkout recording or
`sound track 55 is to provide a control disc 56B (Fig. 6)
`of thin material having a slot or groove 56C therein.
`This groove 56C corresponds to groove 56 previously re(cid:173)
`ferred to. This disk 56B overlies the center portion of
`the record blank 47 so that the beginning 56D of the
`groove 56C is adjacent the end 55B of the sound track 55.
`When the needle 46 leaves the track 55 at 55B it im(cid:173)
`mediately enters the track 56C the movement being ac(cid:173)
`complished by means of the offset tangent of the arm as
`previously described. Said track can be either a deep
`cut or a groove that will quickly and firmly move the
`needle and the entire arm 26 inwards to cause instant
`action of switch 50 to start the recording cycle.
`By the aforesaid means greater lateral force can be
`applied to needle 46 than if the comparatively shallow
`groove 56 in the record blank 47 is employed, and an
`additional advantage is that when the blanks 56B are
`employed it is not necessary to form groove 56 in the
`talkout record blank 47.
`Recording mechanism
`Referring to Figs. 8 and 9 it will be seen that the
`mechanism of the recording arm 25 includes clutching
`means similar to that described in pending application
`Serial No. 30,538, filed February 2, 1948, the arm being
`horizontally pivoted to a shoe 61 and having a screw
`68 adapted to frictionally engage a clutch disk 59 on the
`upper end of a swivel shaft 60, the latter being journalled
`in a hollow post 58. However, the means used to drive
`the mechanism is novel. A motor 59 of suitable speed
`is geared to the lower end of the swivel shaft 60, being
`adapted to drive the arm 25 transversely across the record
`when the arm is clutched to the shaft 60 as described in
`the above-noted application. It is understood that if
`desired, a suitable gear-motor may be directly connected
`to the shaft 60.
`Near the outer edge of pivot shoe 61 is attached a pin
`62 extending downward toward the chassis 20. Said pin
`is in operable relationship with a switch 63 which acts as
`a limit switch when the recording arm 25 approaches the
`inner extremity of the record, cutting off all current to 65
`the machine. When the recording arm is moved to the
`outer extremity of the record, the pin 62 operates an indi(cid:173)
`cator switch 64, the function of which is presently to be
`described.
`In one form of the machine, referring to Fig. 10, one 70
`end of a cord 65 is attached to the pin 62, the other end
`of said cord being connected through a coil spring 66
`to a lever 67, pivoted at a point 67A below the chassis.
`The lever 67 is surmounted by the knob 31 so that when
`the lever is pulled forward, the tension of the spring 66 75
`
`6
`is sufficient to overcome the friction between the dutch
`screw 68 and the clutch disc 69 in the recording arm
`mechanism, thus slipping the arm toward the center of
`the record. Simultaneously, when the lever 67 is pulled
`5 forward, a switch 70 is closed which impresses a tone
`signal on the terminal groove, the tone signal functioning
`as a notice to the calling party to begin speaking.
`Timing mechanism
`For certain types of service, two functions of the ma•
`chine must be of definite interval so that a timing device
`may be necessary. First, the recording or message tak(cid:173)
`ing phase of the answering cycle must be limited to a
`definite time for each incoming call. Secondly, it may
`15 be desired to repeat the tone warning signal at regular
`intervals during two-way conversation recording. By
`limiting the normal automatic record-in time to a prede(cid:173)
`termined suitable length, one timer 71 may be used for
`both functions.
`Figs. 11 and 12 show a motor 72 having a shaft 72A
`which drives an arm 73 which, while at rest against its
`adjustable stop 74, holds contacts 75 closed, causing a
`signal to be generated as soon as relay 45 is energized,
`thus completing the tone signal circuit through contacts
`25 45B on the relay 45. Simultaneously, the motor 72 is
`energized through contacts 45A on relay 45 and through
`its controlling switch 76. The motor 76 is of the syn(cid:173)
`chronous clutch type which, when deenergized, mechani(cid:173)
`cally disconnects its gear train from its armature, allow-
`3o ing the arm 73 to move freely, so that when the arm oper(cid:173)
`ates the switch 76, a lever 77 of the switch 76 has been
`moved under a hook 78 which holds switch 76 open while
`the arm 73 is returned to its starting position by means of
`a spring 79.
`In springing back to its starting position
`35 the arm 73 moves a lever 80 by means of a forward ex(cid:173)
`tension 80A thereof. The lever SO is pivotable around
`the shaft of the motor 72 so that, in being moved counter(cid:173)
`clockwise by the return of arm 73, another extended por(cid:173)
`tion SOB engages the hook 78, thus moving the latter away
`40 from the lever 77, allowing the switch 76 to assume its
`normal position by means of its own internal spring.
`The switch 76 is of the normally closed type so that in
`normal position, voltage is again applied to the motor 72
`and the foregoing sequence repeats and will continue to
`45 repeat as long as the aforementioned circuits are ener(cid:173)
`gized: This repetition may be desired for tone signal
`timing in recording a two-way conversation.
`A reference to Fig. 12 will show another switch 81
`ganged to the switch 76, switch 31 being the interval con-
`50 trol switch for the recording phase of the answering cycle.
`When the switch 31 is opened by the arm 73, all relays
`are de-energized and the device is re-set for the next call.
`As switch 81 is used only on the answering function of
`the machine, its contacts are shunted out on all other
`55 functions by means of a pair of normally closed contacts
`98-2 on the answering key 98, Fig. 13.
`Mechanism to fix the starting point of the talkout record
`Referring to Fig. 15, the push button 30 extends
`through a hole 32 in the false top 27 and is restrained
`in its upward movement by a spring clip 83. The lower
`end of push button 30 rests on one end 84A of a lever 84
`which is fulcrumed in a block 85. The opposite end
`84B of lever 84 engages a pin 86 which is forced down(cid:173)
`ward thereon by means of a compression spring 87. At
`the proper location on the under side of the pivot shoe
`61, a hole 88 of diametrical size to fit the pin 86 is drilled
`only partially through said pivot shoe.
`It will be obvious
`that, when push button 30 is pressed and arm 25 is moved
`into starting position, pin 86 will enter the hole 88, there(cid:173)
`by holding the recording arm at that particular point.
`The use of this mechanism to fix the starting point of the
`talkout record eliminates needless fumbling on the part
`of the operator and standardizes the width of the clear
`area on the outside edge of the record 47.
`
`60
`
`Motorola Solutions, Inc., Ex1021, p. 9
`
`

`

`7
`OPERATION
`The operation of the machine is best described as a
`sequence of functions in the order in which they are· most
`likely to be used:
`Using the machine to record a two-way conversation
`A switch 89, Fig. 13, is closed by throwing a 3-position
`key 109, Fig. 2, to the position labelled record two-way.
`One pair of its contacts 89-1 connects side T-1 of the
`telephone 32 to side L-1 of the telephone line. The 10
`circuit of T-2 and L-2 is permanently connected, there
`being no necessity of switching both sides of the circuit.
`Contacts 89-2 close the circuit to the automatic tone
`warning switch 75 and contacts 89-3 energize relay 45,
`·
`said relay being held in energized position. only by said
`contacts 89-3, the locking or holding contacts 45-A being
`on:ly in circuit on Answer and Test presently to be de(cid:173)
`scribed: A resistor 90 is inserted in series between the
`telephone 32 and the chassis ground so that the output 20
`level of the local phone and that of the incoming signal
`will be equalized. Said resistor will be hereinafter shown
`as being disconnected when the machine is being used
`only as a telephone.
`The sequence, then, which follows the closing of switch 25
`89 can be traced in Fig. 13 as the ensuing:
`(A) The telephone is connected to the telephone line.
`(B) Relay 45 is energized, setting up the voice circuits
`for recording.
`(B-1) A motor 91 is energized, moving the large turn- 30
`table 23.
`(B-2) The motor 59, which drives the recording arm
`25, is energized.
`(B-3) The motor 72, which controls the repetition of
`the tone warning signal, is also energized.
`T~erefore, to use the machine for the purpose of re(cid:173)
`c_ordmg a two-way conversation, the following opera(cid:173)
`tions are necessary; the operator of the machine is using
`the telephone, so that the telephone switch 107 is closed.
`When he wishes to record the two-way conversation, he 4o
`places a r~cord blank 112 on the large turntable 23, puts
`the recordm~ arm 25 in position on said blank, closes the
`two-way switch 89 and opens the telephone switch 107.
`Any speech on the telephone line, including that of the
`local station is then recorded on the blank.
`Recording locally using the telephone handset as a micro(cid:173)
`phone and speaker
`When switch 92 is closed, Fig. 13, its contacts 92-1
`energize the relay 45. The spring of contacts 92-2 dis(cid:173)
`connects the chassis ground from T-2 and inserts a volt(cid:173)
`a~e in series with said T-2. This voltage, necessary
`wi_th a~y stan?ard carbon microphone or telephone trans(cid:173)
`mitter i~ obtamed through wire 93 from a tap on a resis(cid:173)
`tor 94 m the power supply of amplifier 110. The se(cid:173)
`quence of operations with this switch position is the same
`as with switch 89 excepting that the telephone line is not
`connected to the telephone, and that a voltage is applied
`to said telephone being disconnected by contacts 89-1 in
`switch 89 so that it may be used independently of the
`telephone line.
`Therefore, when the operator wishes to use the ma(cid:173)
`chine for recording locally, for the purpose of dictation,
`memos, etc., the following operations are necessary: A
`blank 112 is placed upon the large turntable 23 the re- 65
`cording arm 25 is put into position on the bl;nk, the
`handset of telephone 32 is held in readiness in one hand
`while the record lo~al switch 92 is closed. Thereupon:
`any speech spoken mto the handset is recorded on the
`blank.
`
`50
`
`,.
`
`To make the talkout record
`A small record blank is placed on the large turntable
`23 and the "start talkout" push button 30 is held down
`with one hand. while the recording_ arm 25- is _moved in~
`ward. When the, arm has s_top2,ed at ii$ starting goint
`
`15
`
`8
`above the talkout record, as previously described, the
`arm is lowered to· said record and the push button is re(cid:173)
`leased. The telephone handset is lifted as the record
`local switch 92 is closed and the telephone transmitter is
`5 used as a microphone for recording and talkout message.
`At the end of the message, the "end of talkout" lever 67
`is pulled toward the operator, making the aforementioned
`terminal groove 56 and impressing on said groove the
`before-mentioned tone signal.
`Testing the talkout record
`After the talkout record has been made, it should be
`played through, not only to ascertain whether or not the
`wording is correct, but, in one form of the machine, to
`make the necessary adjustments at the beginning and end
`of the message.
`In t.1iis particular form of the machine,
`the talkout test is made with the talkout record on the
`In
`small turntable and by the use of the test switch 95.
`closing the test switch 95, one pair 95-1 of its contacts
`closes the holding, or locldng circuit of relay 45 so that
`said relay may be locked in the same manner as during
`the answering cycle to be described hereinafter. An(cid:173)
`other pair of contacts 95-3 disconnects L-1 from T-1,
`and a third pair 95-2 energizes the starting relay 96
`which, through its contacts 96E and the back contact
`45.A, relay 45 starts the motor 97 which moves the small
`turntable 24. The knob 49 has been so adjusted that
`the needle of the playback arm 26 is positioned near the
`first groove of the message so that after the turntable 47
`begins to move, the arm will traverse the record in the
`usual manner. At the end of the talkout message, the
`cam 51 is adjusted by means of lever 52 so that the mid(cid:173)
`cycle shift of circuits occurs at the proper point. When
`said shift occurs, the playback arm is raised by means
`of relay 45 and returned to its starting position as pre(cid:173)
`viousiy described.
`The interval timer does not operate on test, as its con(cid:173)
`tacts 81 are shorted out by the normally closed contacts
`98-2 of switch 98, it being unnecessary to wait for the
`machine to go through the recording phase of the cycle.
`The sequence then, which follows the closing of switch
`95 is as follows:
`(A) Starting relay 96 is energized.
`(B) Motor 97 starts.
`(C) Arm 26 traverses the talkout record 47 in the
`usual manner.
`(D) Switch 50 is operated by the movement of the
`arm 26.
`(E) Relay 45 is energized, returning arm 26 to its start-
`ing position.
`In the preferred form of the machine previously de(cid:173)
`scribed which has no adjustments at the beginning and
`ending of the talkout message, it is only necessary to
`55 check the correctness of the wording, which may be done
`on the large turntable 23 using the playback switc