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Патент USA US2110286

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March s, 1938.
A. A. -BURGESS
TELETYPEWRITER EQUI PMENT
2,110,286
Filed Aug. 8. 1936
5 Sheets-Sheet l
4
A TTORNEV
Mamà 8, 1938,
A. A. EURGESS `
¿H0286
TELETYPEWRITER EQUIPMENT. .v
rFiled Aug. 8. 195e
.
“3 sheets-sheet 2
62
44
_
`
-
F/G. 3
ATTORNEY
Mmh s, 1938.
A. A. BURGESS
2,110,286
TELETYPEWRITER EQUIPMENT
Filed Aug. 8. 1936
3 SheetsèSheet 3
F/G. 7
/09
/NVEA/TOR
'AA. BURGESS
¿5 WMM
ATTORNEY
Patented Mar. 8, 1938
PATE-NT oF-Fl-ca
2419,28@ ».
,
To obtain-Emis' "decrease Ain the ’
This invention‘relates 'to' anfimproved ïteleï ~ board_-mg1tj1p1e.¿eifectiveheight'of the -operator’s teletypewriter,
typewriter exchange switchboard ^ ‘of ' the-“_ type
the usual keyboard and typing mechanism ofthe'
dissociated, and
plac'edupon the
shown in» Patent 2,037,193 granted'Aprnï -14§ 1936 { teletypewriter'
_
_
_
are separated,
_or
,y to' A, A. Burgess et al,and,"more’particularly;- to ‘ the keyboard vmechanism isfthen
means'îffor increasing the area;l available'to Van
C11
top‘of the operator’s table while the typing mech
operator, " of'- _the ~' _jack-held Y_of `the _switchboard . anism, instead of being located> above the key?
5
multiple:
-’
_
“
'*
'
`
"
it usuallyy is’, is *located
A"
The' *practices usedA `in - operating telephoneieìçf ` underneath on a'shelf below'theltop of the table.
change switchboard cannot' all be followed in op; '_ Thefelect'rical connection betweenffthe units andl
erating- teletypewriter exchange *switchboards '
Abetween the units themselves.vv
For example, a telephone 'operator> canjplace her ' the-switchboard-and
is accomplished-by means -of yflexible-cords ter'
I
board'-v mechanism
as
_
_
_
__
‘
_
chairclose to the switchboard multiple and the4 " minating in plugs and jacks to facilitate disso-f V
_
of theëjack-_ñeldfthen avail-ï; "
extent of' the >area
ciatìng thel units for maintenance purposes.- Sincel the tape is associatedwith the‘unit com
_ able to h'er ‘will’ be limited Y'Dy-_the `length‘off'her` '
l5~arm~V However, in teletypewriter exchange switoh- j prising the typing mechanism, it is _also located
board practi'cethe area of thefjackèfield available -
top of the operator’stable ‘and is," in
to arr-operator is'limited by a' factor-not foundl‘in'ß benéathèthe
its- new? location, obscured; from direct fview.
'
_ This factor is*
telephone 5' switchboard practice.
Therefore, a mirror-'mounted alongside thetyping' "front
_ _the operator’s
of her thereby
teletypewriter
blocking'oif
which`isflooated
anfjamount'of
in _ mechanism is employéd'to' reflect> the characters
20
typed on the'tap'e to a second'mirror, mounted at -
table topLv level,~ in which thel characters Íare viewed
the jack-field equal
, in ¿dimension
,
' ThilSÑWhënfthe
' to ' theglength'
and height of the rvt'eletypewriter;-
by'the?¿operator.j A_length "of »tape about four>
operator wishes "to" insert' a 'plug in -a"~`jack,’ïshe_ ' inches'lcri'gá'which is more'than suflicient to meet
reaches dup V'above ,her yteletypewriter to” _the jack_is determined
-by `vthe _
field, _the-top row of which
_
__
thisv manner.
limit of'her lreachj‘ UHowever, the 'effectiveness of _' viewedin
As'ïifthe'unit comprising the keyboard mecha-_
her reachis limited- by-theheight of >her«teletype#‘4 nismï'is
only Vabout `live' inches high,¿r by lplacing
25`
writer since~ the heighti'ofv the jack-iielljîl vail-' ' the typing unit beneath the ¿top of the_'table aV
able'`Í to her is roughly equal tothe ‘length
30
"reach minusithe height of her teletypewrite
The teletypewriters ordinarily employed at _teleà`
-‘ savinglin operating hei‘g'ht'ïof "the y_switchbcardv
multipler of about five and'Íone-'half inches is ob
tained in which additionaldine circuitsïmay _bev
typewriter'- exchange` -s'witc’zhboard's'*are f usually ' terminatëdfi in -fjacksï 1 'placed`> in 'ï' this ladditional
Ihigh. ` These tele*
about-:ten and _one-half inches
space in 4the> multiple'.-‘ Thus,- the/separation -of
placed` justl belowH "the~ "
typewriters are generally
the keyboard and typing mechanisms-enables the'
35 ï -front‘of the switchlznoard> multiple with the result “
that the multiple'commences about ten and enea andl one-half -îinches to- provide, on ~a siX?-panel
half 1 inches above 'fthe possible operating level ' multiple,r space for approximately 720 additional
which is 'at the keyboardsof the teletï‘ypewriters'Ãvy-`v jacks ito ybeïfconnected lto an- `additional 720 s_ub
Thus, the numberofrows of jacks that can bem s-criber r_lin'es'»."~ Thi'sïincrease in the area of Vthe
"reached by anïoperator is distinctly-‘limited by jack-fleld
available vto the operators, lincreases '
this construction sincethe totalnumber of mul-`-'~ the capacity vof fthe operators) positions. `In~ view
ïoperator
is>
able
{toreachis-"j
_
tiple
jacksthatan
less than if~her teletypewriter‘were~"-`1ower=in~~.ofthe steadily'»increasinader?and'for'teletype- ~
’
f» ~
"
~
v ' Writer exchange- facilities, this _increasleyinr the
height.
' capacity of the operators’> ‘positions- become of in_
Accordingly, it is an object of thisinventionto- yÉ ` creasing importance.- “Furthermoregthis lowering» _
increase the area of the~jack-field> available‘to`4~>
_
_ of the switchboard
' ‘~ offthe bottom-‘of
the'jacklñeld
an operatorat-a
teletypewriterjegchange
switch
~
_
__
_
f multiple decreases
an' object of this ‘inventionîto-provideï-r
50
«a teletypewriter exchange" switchboard *withAv a
novel teletypewriter table *and assembly; "
‘f f’ "
theA average -` amountfo'f reach- ~
inïanswering and completingïcalls thereby`ï1jeduc- _ '
_
_
ing'the‘amountïbf
timéf'reqìliréd'to answer and"
complete'calls and‘ïlikewisereducing,the amount
-
of'fat'igue experienced by the-operatorsV iny doing' '
‘
ofv work." Asfa‘res’ultfof thisreduction
_
_
_
the Leffective height; fof the - operatór’s; ‘teletype-_ thistype
both time and fatigue,A the «efficiency of the#
Write -soas- to jenabletheyoperator to reach ya - in
operators `will be'fincreasedf*
I greätërlamount-loffthe @jack-acidi ‘of’«theswitch-c ‘
These objects arek accomplished by decreasing »
' 2
2,110,286
This design also takes -into consideration
strips (not shown) and to outlets 1.' Also behind
the _
fact that the optimum _Width of one section of a
the lower portion of the switchboard vI is a conduit
(not shown) leading from the local source of
power supply (not shown) and connected to out
teletypewriter exchange switchboard is approxi
mately twenty and one-half ' inches, as this
spacing is considered tobe a minimum spacing
for operators and permits a maximum number oi'
10
lets II.
'
'
'
Directly in front of switchboard I are the op
operators to be placed alongside a given length of
erators’ teletypewriters, each of which is mounted
switchboard. In other words, it enables a -mini-r
upon
a table 3. For the salie of simplicity only
mum length of switchboard to' serve a .particularv twoïteletypewriters.
and 4tables have been `shown
number o_f subscriberlines.
and it‘ls t‘o be understood that‘more may be read- _
A modiñcation of the invention is arranged
ily employed ifdesired.- As is shown in Fig. 3,V
with the teletypewriter motor located on a shelf"
4 projects outward a distance sumcient
below the shelf on which the typing unit is lo-l l -key-shelf
_to _permit a teletypewriter and its table 3 to flt
cated. This increases the amount’of knee room
15 available to an operator. 'It- also permits thef underneath tothe extent of about half their
widthï‘to‘enable the operators to sit close to the
table to be made narrower 'toenable the oper ' yjack-fie`1dï124 _ for efficient operation.
_ _
Tables 3
ator to sit closer to the jack-field. f
maybe readily moved up and down the length of
` Another modification of the invention incorpo
.the switchboard Vl _in accordance with different '
i >rates features described above into a switchboard
_ _trafñc requirements.
20 by mounting the Vteletypewriter in a switchboardv f
, section,V such as. somewhat
base 65 composed of non-resilient material, such
as hard rubber. 'I_'o insure that the top `of table.A
disclosure of Patent 1,867,333 grantedduly 12,
1932__„to E._ M. Smith.: ~.
25
.
__
.
f _
v
,
3 will beïlevel and toobviate jiggling otftable‘), Í.v
the bases `66'jmay be removedto permit the in-,~
sertion of aî‘fstabilizing device, afterwhich
25,
bases 65__m_ay be replaced.: -ÍAnfalternative means„_
' `The above features and other` novel features of
>this teletypewritertableand assembly will be ex
- plainedinmiore detail in connection with the
drawinssin whichf
'
Theßfeet of each' table3 are provided with a 20
e
of stabilizing table 3 over an uneven ñoor surface
Fig. y¿1» is a threeëdimensional view of a portion
is to _use basescomposed of resilient or compress
of a teletypewriter-„central omceihaving _a small
teletypewriter _exchange switchboard with Vtwo
ible._'zx`iia;t_e_ri_al,`.V such _así a `rubber composition.
isdesigned to¿_be_ compressiblein accor-d_
operators’ tables_`and teletypewriters arranged `in_~_ which
ance withthe unevenness of thesurface ofi_»the ._
front of A«it andconstructed in accordance withAfthe switchboard _room vto reduce <tip-_v`
the invention;->
__
,__
»_
_
_
_
__
ping _or jigglingnotfV ,theV Ítable 3.
Fig. 2 is a cross-‘sectional side viewof one` ofA
the operators.’ teletypewriters mountedupon its
If_ the floor f.
ofl the„switchboard.-__room is sufficiently level.
thenthe legs of _these tables 3 maybe provided
with cup-shaped __feet of hard brass to _facilitate
viewv of this operator’s teletype-v ~f1 sliding
the tables 3¿up„and__do_wn_ _the length of
writer mounted upon _its table and located -be-_the
switchboard
in< accordance_¿with„di_iïerent
neath the key-shelf of'the,»switchboard;=y _.
.~ , traffic requirements.
Figs-31s
40
Fig-¿iis a three-dimensional view of the tele
. typewriter assembly together Vwith its~ `table and
~.
asesociatedapparatus;
f
-~
-
'
-Each operator's teletypewriter includes a key-_>
beard ¿traps‘mitter _unitfz which isÁ similar to that
i
^ described_„_in _Patent_1,_59_5_,4_72granted/August _10, `
Fig. 5`isja modiñcation'of the‘invent'ion'in 1926 rto H. __L.
'Ifhedisclosure-of this Krum »~
which the teletypewriter motor is located on a _ patent
is incorporated herein by reference as a .
45 _shelf which is beneath the shelf upon which the>
typingunit
Fig_.`6 is somewhat
is located;
similar
Y
_ toa portion Y of . Fig. 5
but shows the motor inverted and suspended from Y i
the bottom of the.shelf;',
50.
_ ,
,
_.
,. . i
»
Fig.g'1 Vis a modiiîcation~ of
the _invention'in
»
_
.
.
_
45>
also _shown inthe drawings,¿theL keyboard'unit 2
¿ is Smounted uponthetop _of theoperator’s tablev
whichV the
_' _`teletypewriters are mounted in> the ,
switchboard itself; _and
is >ishownQ-,ttrbe operatedfbyamotor 6_9y which is _
also. „DoS/ltiònadfupg?
'the_ ten, of .table „3f- ¿AS1-s'
_
_ _
_ _
g
3 andis provided with a cover 4l, This cover has
a flat _top 43 which offers awriting surface to the
operator fo_r}_use. _in writing _on the
Fig. _8 is a, cross-sectional view of a portion of
_message rate i
tickets _2_2 which „are then »placedfdn the ticket
the switchboard, vshownin Figqô, together with
spring clip 23 attached to thevlower-part of ‘covert
`
>
-^ Fig, 'Lrepresents a smallïte'letypewriter ex-v f 4|_. »The frontof cover 4I >hasa hole__88
changeswitchboard-_I _similar tothat disclosed in which the end-of-line indicator lamp44may be ,
Patent`=2',0_37,193 *granted April 14, 1936 to A.V A. « switchr
viewed.'¿4_5-A_tfor_theieft
controlling
or _the’_.current
keyboard
¿supplied
iseeentrei
from Y, .i
55 _one‘of its teletypewriters,
g
.
.
,
e
.
through
Burgesslet al. v._’I’hej disclosure of this_Burgess et _ thelocal source of power supplyl „ ~
al patentfis incorporated ’hereinj by reference 'as Y
lThe mechanism? `Whißh ,ßfzlvnprisesl the i' typing".
unit ,5l vof ¿each operator’s, teletypewriter is:
mountedïupon -shelf__52 which is locatedabout ten ‘
the teletypewriterv exchange switchboard l has _a' ,metes
_beiowftte tot» vtif., table 3.»
apart of this specification. f Returning now to the '
consideration of Fig. 1‘,_the upper front portion of '
jack-_field 24 comprising _rows of jacks _25, Just unit 5I is shown to be operated by a motorji -'
above the ljack-iìeld 24 are busy Vtest lamps 2_0 and
ticketboxes'2l forl storing >message Vrate ticketsî ,A which is also mounted _upon shelf __52._1 Although
.position
‘22. Immediately
:splitting below`
keys .lli->
the jack-_ileld
x e v
2_4 are
'
thev
. r
'to
inK this ,embodiment l Off the invention.4 ¿it is to e be
U understood >thatwth'is is a matter of choice and-
Slightly _lower down- _on the' switchboard |1-is ,
theprojectingforoverhanging, key-_shelf 4 hav
_
_
__
_
that-e singiemeterieeeted
_with
either unit
end
VingarovIrOf calling andî'answeringv plugs 28, a i suitably @Omleçted t0, the. Other. unit such as the
row of supervisory lamps 29, and a rowofsuper - arrangement
visory keys` 30. Behind the lower portion of each
sited"
in
»
`.;§
5,;maybeused if def,`
‘
i
,f
`
`
.
..
`
;»
_The operators. positionl equipment is locatedA
f
at
thefieft ef the keybeerdïunit :rend is mounted
_nient (not shown) whichis _wiredjtoterminal> upon
a readily remoiiablexpßnell“ tò‘vvrwllitate 375„-Y
section jof.,swi_tchboard I is position relay equip
2,110,286
sages as a basis for determiningv the amount to
behindmirror 68 >and through a slot in_cover 4I
to the motor 69 of the keyboard unit 2,'and then
back again over- another conductor in cord 8|.
The other power path simply leads from the con'
necting block 82 and jack panel 61, over plug 38
be charged for a particular call. .Calculagraph
41 is provided with levers 31, one of which. is
to motor 56 of the typing >unit 5I, and then .back
removal for maintenance. or modiiication to meet
different <requirements of different installations.
This position equipmentincludes an electric cal
cuiagraph41 used by the operators to time mes
used to indicate on a message rate» ticket 22 y.the
time when the message began, andthe'other to
10 indicate on ticket 22 the timethe message ended.
The position equipment alsoy includes the oper
ator’s position keys 46 for performing the super
visory functions of ringing on the answering cord,
cord circuit splitting, recall, and recall-release.
15 These keys46 are connected by leads (not shown)
to a connecting block. 82 located on the underside
of the table top near the jack panel 61.
This position- equipment lis connectible to the
switchboard _I by the line cable 8 and the power
20 cable I2.
Line cable 8 has a plug 9 which is
adapted to _fit linto any of the outlets 1, at the
base of switchboard I, leading to the position re
lay equipment (not shown) inside switchboard I.
Power cable I2 has _aplug I3 which is adapted to
25 be inserted into any of the power outlets II, at
the base of switchboard I, leading to the local
source of power supply (not shown).
i Just to ith'e‘right of panel 68 and immediately
to the leftvof the typing unit 2 is a smalljack
30 panel 61 mounted in' the top of table 3.
This
jack panel 61 is connected by leads (not shown)
tothe keys 46 and is providedfor receiving the
plugs 38, 39, 48, and49. Attached to the plugs
48v and 49.»are the teletypewriter line cord 88 and
35
power cord `8l which passbehind the mirror 68
40
38 for connecting the power supply to motor 56
and theninto the keyboard unit 2. These cords
88 and 8| form a link in the electrical connection
between the keyboard unit 2 and the connecting
block 82 to permit ready removal of the keyboard
unit 2 if desired.
A cord 83 is attached to plug
of typing unit 5I. Another cord 84 is connected
to plug 39 for forming the electrical connection
between the keyboard unit 2 and the typing unit
5I through the connecting block 82. These cords.
45 83 and 84 permit ready removal of the typing unit
6I if desired.
Table 3 is also equipped with a telephone I6
which is mounted on the right end of cover 4I
of thekeyboard unit 2. -Thistelephone I6 is
50 connected to the switchboard I byl a cord I1
which passes through a hole 42 in theright end
panel of table 3 and then to the connecting
block 82. The. telephone circuit then passes
v55
from connecting block 82 over a conductor in
cableß and through jack 1 to the relay equip
ment'inside switchboard I.
y
e
The line circuit passes from the position relay
equipment inside switchboard I, through outlet 1
and plug 8, over cable 8, _through the connecting
60 block 82, jack panel 61, line plug 48, line cord 88
which goes behind mirror 68 and then through a
hole in cover 4I to the keyboard unit 2, back over
another conductor in cord 88 and plug 48,
through connecting block 82 and jack panel 61
65 to plug 39, over cord 84, through a hole in the
top of table 3 to the typing unit 5I, and then
back over another conductor in cord 84 to cable
and cord 83 through a' hole in the top of table 3
again over another conductor in cord 83.- It
might be mentioned here that cover 4I is pro
vided with slots to facilitate uncovering the typ-I 10
ing unit 2 when desired.
,
_ .
Since the tape 48 must pass through the typing
unit 5 I, the tape reel 53 is conveniently mounted
on the right end of Athe typing unit 5I. To facili-`
tate insertion and removal of the tape reel `53,
the front -side' panel 54 of table 3 is mounted4
upon hinges 55 to act asI a hinged door so that
it may be pulled outward. One end of a chain 63
is attached to the underside of the table top
and the other end isl attached to the inside top 20.
portion of panel 54. , Chain 63 is provided forthe
purpose of preventing panel 54 from dropping
down when opened and, instead, to` hold it out'in
the manner cfa shelf for the convenience of a
maintenance man. It is to be understood 'that 25
this' is merely the preferred embodiment o_f the
invention and‘that other arrangements may be
constructed. For example, the right end panel
of _table 3 may be .arranged to drop», or slide
downward. Also„the tape- reel 53 need notv be
mounted directly on the typing unit 5I Ibut may
be placed in other locations, such as upon the
side panel 54.
j
The tape 48 passes from the supply reel 53,
through the typing unit 5I, through a slot 51
in shelf 52, and then to the used tape storage
receptacle, or container, I4 with which each
table 3 is provided. Panel 54 has a cut-out por
tion, indicated at64, for enabling _an operator to»
quickly insert her hand therein to free the tape
48 if it becomessnarled or` tangled priorkto its
passage through slot 51.
,Y
.
.
In order’for the operator to> see conveniently
what is typed upon the tape 48, it is advisable to
cut out a portion of the top of' the` table 3 as 45
indicated at 6I and to employea small lamp 58
and two adjustably mounted mirrors 59 and 68.
The tape illuminating lamp 58 has a shade which
is designed to concentrate the light -upon the
printed portion of the tape 48. , This light then
shines upward to the mirror 59 which is so ad
justed as to reflect it to the mirror 68 which, in
turn, is adjusted to reflect the image of the
printed tape 48 to the eyes ofthe operator indi
cated at 62. »The line of. vision from the oper 55
ator’s eyes 62 to the printed tape L48 is indicated
in Fig. 2 _by the broken line. If desired, the in»terior of table 3 may be-painted white to reduce
absorption of the: light rays.
It is to be understood that this is the preferred
form of the tape projecting means and‘that vari
ous modifications may readily be made to suit
the requirements of a particular installation. A
lengthv of tape about four inches long, more than
suiiicient to meet operators’ typing requirements
may be viewed in this manner. `In the event that
it should become necessary for .an operator tol
read back used tape 40 which has passed by the
mirror 59, she may conveniently do so by reaching
8. Likewise, the power circuit leadsfrom the
local 4source of power supply over a conduit (not through the cut-outportion 64 of the‘panel 54
70. shown) inside switchboardV I,- >through outlet II ` and pulling tape 48 out of the slot 51.l She may
then readily pull as much of tape 48 out of the
and plug I3, over` cable I2, and then to the con
used
tape container I4 as may be necessary.l
necting block 82. Here the power circuit divides,
A modification of the inventio-n is >shown _in Fig..A
one path 4passing through the jack panel 61,
power plug 49, overpower cord 8| which passes
5 in which a single motor 18 is yused to_-,operate,
43
l
2,110,286`
both the keyboard unit 2 .and'the typing unit 5|.
Thismotor 10 is placed upon an additional, or
the invention effects a decrease in the eñective
height- of an> operator’s teletypewriter which re
second, shelf 1| which is located beneath the
shelf 52 a distance sufficient vto accommodate
motor10.' With this arrangement, the power cir
cuit, coming out of the switchboard I over cable
I2, passes directly tov motor 10. ' A drive shaft 12,
sults in an increase inthe area of the jack-field
available to the operator. 'I'his enables the op
erators tov make more efllcient use of the switch
board multiple. . Since the switchboard multiple
is an expensive item, ythe 'initial and overhead
costs of a switchboard multiple having the bottom
connected by gears713v tomotorv 10, formsV the
power connection between motor 10 and the
of its jack-field .lowered by_means of these tele
typing 'unit 5|» andkeyboard unit‘2. ’Shaft 12 v
typewriter andtable assemblies are considerably 10"
less than they would be for’ an ordinary switch
is connected to the typing'unitl'5ïl by gears 14 and
tokeyboard unit 2 by gears 15. 'I‘he rest of the
board multiple having an equal number of jacks;
construction of this modification is practically
It is to be understood that additional modiñca.
tions within the scope `of the principles herein
outlined are `within the scope of the invention as
herein >set forth and claimed.
the vsame as that described above'. ‘
The advantage of thismodiiication of the in
ventiòn resides yin the fact that, since the motor
51 need> not be on the top of table 3, table 3 may
What is claimed is: '
be made narrower to enable'the operator to sit -
.
~ '
`
-
1. A teletypewriter central o_iiice comprising in
closerl to thev jack-field’24` of switchboard |. combination a teletypewriter exchange switch'
Likewise, since motor 56 need not be> placed on> board including a switchboard multiple having a‘
y shelf 52, shelf 52<may be made 'narrower thereby jack-field, an operator’s teletypewriter mounted
providingfmore knee-room for the operator. ' v
beneath the jack-field of `'the switchboard mul
Anothermodiiication of 'the invention is illus Y tiple, said teletypewriter having a. keyboard unit
tratedv in Fig. 6 which shows‘ a single motor 10’ anda typing unit, means for' reducing the et
AinvertedV and suspended by any Vsuitable means, l fective height of the operator’s teletypewriter for
255
such as screws 11, from the underside of shelf
52’ for operating both the' keyboard unit and the
typing lmit by means of gears -13'-14’ and drive
shaft 12’. The advantages inherent in thismodi
liication ‘are that better ventilation is obtained
for-motor V10’ and more foot-room is provided
for the operator. `
1
»
'
'
increasing theeffective height of the jack-field,
said means including first supporting means for
supporting the keyboard unit below the jack-field
and second supporting means for supporting the
typing `unit beneath thefkeyboard unit.
2. A teletypewriter central cnice comprising in‘
combination a teletypewriter >exchange switch
Still another modification of this invention is . board having a jack-'field and a projecting key
shown in Figs. 7 and 8. In Fig._7, a switchboard shelf, an operator’s teletypewritermountedvupon
«l |00 is shown provided with teletypewriters | 0| a table locatedunderneath the‘key-shelf, said
partially built into, or mounted in, the switch
tablev being adapted for movement up and down(
board |00.
’I'hese teletypewriters |0| are the
same type as the teletypewriters shown in the
other figures of the drawings. Although two
>separate motors have been shown in this em
bodiment of the invention, itis' to be understood
the length of the switchboard `for readily varying
the location of the operator’s position in accord
ance with different trame" requirements, and
means for increasing the area of the jack-field
available to the reach of an operator, said means
that this is a matter of choice and that a single
motor located with' either unit and suitably con
nected to the other unit may be used if desired.
:It can be'seen in the drawingsv that, with the
switchboard constructionv employed, the tops of
comprising a teletypewriter keyboard mounted on
the teletypewriters | 0| are almost on the same
3. In a teletypewriter central omce having in
level as the top of the key-shelf ~ |03.
top of the table anda teletypewriter typing unit
located underneath thetop` or the table .whereby
the effective height'of the 'operator’s teletype 45
'
writer is lowered.
The ad-V combination a teletypewriter exchange switch
vantage of` this construction resides in the fact board
and-an operator’s Vteletypewriter having a
505 that it enables the jack-field |04 to be extended keyboard unit and a typing unit, said switchboard
vdownward further, than would otherwise bepos
including a switchboard multiple having a Jack
sible. l This, of course, increases the number of field, the method of increasing the area of vthe
subscriber lines available >to the operators.
jack-field accessible to‘an operator, said method
As can be seen in Fig; 8,y a’teletypewriter |0| comprising separating the keyboard mechanism
551 is provided with two motors |05 and |06. -Motor of the operator’s teletypewriter from the typing
|05 operates the keyboard unit |01 and motor mechanism, mounting the keyboard unit beneath
|06 operates the typing unit |08. Power for op
the jack-field, and positioning the typing unit
erating motor |05'comes in from conduit |00 and
the power for operating motor |06 comes in over
conductor | I0. The typing unit |08 is electrically
controlled by the keyboard unit |01 overY a con
ductor | || which leads from the conducting block
| |2 in the keyboard unit |01 through a connect!
ing block ||3 in the typing unit |00. Since the
beneath the keyboard unit.
Y
l
4. In combination, an operator’s teletypewriter
and table including a keyboard unit and position 60
equipment mounted upon the top ofy the table,
said table having a shelf, a typing unit mounted
upon the- shelf, a motor mounted upon the' shelf
for operating the typing unit, and an electrical
connectionbetween thekeyboard unit and the
is inside the switchboard |00, it is made visible` typing unit _f_or enabling the’operation of the 65
>to an operator by being illuminated by a source typing unit to 4be controlled by the keyboard unit.
of light, such as lamp H5, and ’is then reflected `
5. In combination, an operator’steletypewriter
tothe eyes of the _operator by mirrors H6 and and
table including‘a keyboard unit and position
||1. The line of vision is indicated. by the dot
equipment
mounted upon the top of the table;
dash line in Fig. 7.
66 ,_ tape H4, which comes from a supply rolly |53,
It can thus be: seen that the invention is not
restricted to teletypewriters mounted upon mov
able'ïtables but is equally applicable to teletype
,rwriters built into a switchboard In both types,
said table having a shelLva typing unit mounted
upon the shelf, a first motor mounted upon the
shelf for operating the typing unit, a second motor
mounted upon the top of the table for operating
the‘vkeyboardunit, and an electrical connection
5
2,110,286
between the keyboard unit and the typing unit
for enabling the operation of the typing unit to
be controlled by the operation of the keyboard
unit.
6. In combination, an operator’s teletypewriter
and table including a keyboard unit and position
equipment mounted upon the top of the table,
said table having a shelf, a typing unit mounted
upon the shelf, a motor, a plurality of gears for
10 mechanically connecting the motor to both the
keyboard unit and the typing unit for enabling
the motor to operate both the keyboard unit and
the typing unit, and an electrical connection be
tween the keyboard unit and the typing unit
15 for enabling the operation of the typing unit to
be controlled by the operation of the keyboard
having a keyboard unit and a typing unit, the
keys of the keyboard unit being on a level with
the key-shelf and the typing unit being located
inside the switchboard on a level below that of
the'key-sheli and keyboard unit, a iirst motor fil
located inside the switchboard on a level with
the key-shelf for operating the keyboard unit, a
second motor located inside the switchboard be
neath the level of theVkey-shelf for operating the
typing unit and an electrical connection between
the keyboard unit and the typing unit for con
trolling the operation of the typing unit by the
operation of the keyboard unit.
l1. In combination, a teletypewriter exchange
switchboard having a key-shelf, an operator’s 15
teletypewriter mounted in the switchboard and
having a keyboard unit and a typing unit, the
unit.
7. In combination, an operator’s teletypewriter
keys of the keyboard unit being on a level with
and table including a keyboard unit and posi
20 tion equipment mounted upon the top of the
inside the switchboard on a level below that of
table, said table having an upper shelf and a
lower shelf, a typing unit mounted upon one of
' the shelves, a motor located upon the other shelf,
means for mechanically connecting the motor to
the keyboard unit and to the typing unit for en
abling the motor to operate both the keyboard
unit and the typing unit, and an electrical con
nection between the keyboard unit and the typing
unit for enabling the operation of the typing unit
to be controlled by the operation of the keyboard
unit.
8. In combination, an operator’s teletypewriter
and table including a keyboard unit and position
equipment mounted upon the top of the table, a
c.: El typing unit mounted beneath the top of the table,
a motor for operating the typing unit, a supply
of paper located beneath the top of the table
for being printed upon by the typing unit, a source
of light located beneath the top of the table for
illuminating the printed portion of the paper,
40
and a plurality of mirrors for enabling the print
ed portion of the paper to be viewed by an
operator.
9. In combination, a teletypewriter exchange
switchboard having a key-shelf, an operator’s
teletypewriter built into the switchboard and
having a keyboard unit and a typing unit, the
keys of the keyboard unit being on a level with
the key-shelf and the typing unit being located
inside the switchboard on a level below that of
the key-shelf and keyboard unit, a motor located
inside the switchboard for operating the typing
unit, andan electrical connection between the
keyboard unit and the typing unit'for controlling
the operation of the typing unit from the key
55
board unit.
10. In combination, a teletypewriter exchange
switchboard having a key-shelf, an operator’s
teletypewriter mounted in the switchboard and
the key-shelf and the typing unit being located
the key-shelf and keyboard unit, a motor lo
cated inside the switchboard for operating the
typing unit, an electrical connection between the
keyboard unit and the typing unit for controlling
the operation of the typing unit from the key
board unit, a supply of paper located inside the
switchboard for being printed upon by the typing
unit, a source of light located inside the switch
board for illuminating the printed portion of the
paper, and a plurality of mirrors for enabling 30
the printed portion of the paper to be viewed by
an operator.
l2. A teletypewriter central oflice comprising
in combination a teletypewriter exchange
switchboard including a switchboard multiple
having a jack-held, an operator’s teletypewriter
mounted beneath the jack-field of the switch
board multiple, said teletypewriter having a key
board unit and a typing unit, means for reducing
the effective height of the operator’s teletype
40
writer for increasing the eiîective height of the
jack-held, said means including ñrst supporting
means for supporting the keyboard unit below
the jack-held, second supporting means for sup
porting the typing unit beneath the keyboard unit, 45
an electrical connection between the keyboard
unit and the typing unit for enabling the opera
tion of the typing unit to be controlled by the
operation of the keyboard unit, a supply of paper
leading through the typing unit for being printed
upon by the typing unit, a source of light located
beneath the keyboard unit for illuminating the
printed portion of the paper, and a plurality of
mirrors located in viewing relation with the
printed portion of the paper for enabling the 55
printed portion of the paper to be viewed by an
operator.
ALFRED A. BURGESS.
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