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Патент USA US2124642

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July 26, 1938.
T.» w. VARLEY
2,124,642
ELECTRICAL DEVICE
Filed June '7, 1933
2 Sheets-Sheet 1
s3
(_\
INVENTOR“
'//g,ev/w\4 £44 V
’
BY
XWTTORNEY"%
.
E, M
July 26, 1938.
' T w VARLEY
2,124,642
ELECTRICAL DEVICE
Filed. June 7, 1933
2 Sheets-Sheet 2
Patented July 26, 1938
2,124,642
UNITED STATES PATENT OFFICE
2,124,642
ELECTRICAL DEVICE
Thomas W. Varley, New York, N. Y.
Application June '7, 1933, Serial No. 674,649
12 Claims.
This invention relates to electricity, especially
to a translating device for translating electrical
energy into mechanical motion, and has partic
ular reference to What is herein termed a re?ex
5 translating device.
An object of the invention is the production
of a system, including an arrangement of the
character speci?ed, capable of the precise con
ditioning of members, indicative of time, situ
u) ated at one place, to agree with an arrangement
representative of an ordinary clock indication of
time at another place.
Other objects and advantages will appear as
the description of the particular physical em
U
'
bodiment selected to illustrate the invention
progresses and the novel features will be par
ticularly pointed out in the appended claims.
In describing the invention in detail and the
particular physical embodiments selected to illus
20 trate the invention reference will be had to the
accompanying drawings, and the several views
thereon, in which like characters of reference
designate like parts throughout the several views,
and in which:
Figure 1 is a schematic or diagrammatic view
of a time sending station embodying my inven
tion; Fig. 2 is a schematic or diagrammatic view
of a series of time receiving stations embodying
my invention.
30
Applicant’s invention, in its most fundamental
aspect consists in the construction of an elec
trically operable device which might well be
called a translating device, as it may be used to
translate electrical energy into mechanical mo
35 tion. It may be called a relay device, or relay
motor.
The translating device of applicant’s inven
tion comprises essentially a ?xed ?eld and a mov
able armature. The armature has two windings
1,9 thereon, one may be termed the operating wind
ing, because when current flows therethrough
under proper conditions the armature makes a
movement, the other, might well be called the
locking winding, because current ?owing there
.;.5 through tends to prevent the operating winding
from moving the armature. An operation of the
armature is secured, however, by increasing or
decreasing the potential difference across the ter
minals of the locking winding. The change in
the value of the difference of potential across
the terminals of the locking winding is secured
by changing the tuning of circuits in shunt to
the terminals. When these circuits are in reso
nance with the current applied to the terminals
(CI. 58—24)
shunt circuits rises and the difference of potential
applied to the terminals of the locking winding
increases and vice versa. Applicant arranges
to change the tuning of the shunt circuits by
means operated by the operating Winding itself 5
so that the whole translating device may be so
arranged, that being connected to a pair of con
ductors transmitting varying frequencies, the
translating device will operate, and by changing
the tuning of the shunt circuit place the whole 10
device in such condition that a given frequency
will not cause the operating winding to move
the armature with a given frequency applied to
the conductors, that is, if the device is connected
to a pair of conductors transmitting a varying 15
frequency current, the operating coil will be
continually intermittently energized, and if the
shunt circuits are in a certain tuned condition
the locking coil will allow the armature to move,
but if the shunt circuits are tuned to that par- 20
ticular frequency which is at that instant applied
to the conductors then the locking coil will pre
dominate and prevent the operating winding
from causing the armature to move.
It is understood that variations of line volts 25
do not affect the motor device, due to its being
of the differential type.
The fundamental translating device of appli
cant’s invention is applicable to many situations
where it is desired to operate a given device in a 30
precise and predetermined manner from a re
mote point, as it is merely necessary to determine
that particular frequency which is to be indicative
of the position of the device at the remote point,
and then to intermittently send that frequency 3.:
to the remote point to the translating device of
applicants invention, whereupon applicant's
translating device will operate by reason of the
motion of its operating winding until such time
as the shunt circuits have been tuned to reso- 40
nance at the particular frequency selected,
whereupon the translating device will cease
movement, and if the device which it is desired
to position is mechanically connected properly
with the means for tuning then the device will be 45
correctly positioned.
Applicant’s preferred utilization of his funda
mental translating device is in connection with
a time system in which the time of day is trans
mitted from a central place or station to one 50
or a plurality of remote places. In such a sys
tem applicant’s translating device properly com
bined is usable to cause hands corresponding
to the hands of an ordinary clock to be posi
55 of the locking winding the impedance of the ' tioned so as to correctly and precisely correspond 55
2.
2,124,642
with the position of hands or other mechanical
hand I will cause a 90 degree rotation of the
device indicative of time at the central station
Wheel 8, that is, the projection I I will force pawl
I3 farther and farther away from its initial posi
. or central place.
tion as shown in the ?gure, until the next suc
ceeding projection I2 is in the position now oc
The particular embodiment illustrated in the
drawings is that of a time system, that is, a
cupied by projection II whereupon pawl I3 will
be tripped by trip member 48 and, due to spring
system by which the positioning of members at
a central station is utilized to indicate time at
I4, will return to contact projection I2.
one or a plurality of outlying or time receiving
stations.
10
C designates a device which includes parts for
indicating time, in this case the minute hand I
and the hour hand 2. C may be any of the usual
or well known time keepers, or clocks, as ordig
narily used. In practice, applicant has used one
15 of the newer type synchronous motor clocks. ~
tice applicant has found a four projection ratchet
wheel, such as 8 to give satisfactory results where
the 90 degree angle between projections is made
1 to correspond with one complete revolution of 360 15
Revolving synchronously with the minute hand
I, is the shaft 3. The shaft 3 through the pinion
4, and gear 6, drives the shaft ‘I. The shaft ‘I
has mounted thereon a ratchet wheel 8.
This
slight diiferenoes of angles between projections, 20
and for this reason applicant contemplates using
‘As the ratchet wheel 8 turns, a'projection, as
II, contacts with and moves the pawl I3. Pawl
I3 is pivoted at 45 to an arm 46 ?xedly attached
single projection will govern the entire movement
Shaft A‘I carries the movable coil‘ I6 of the vari-'
ometer V ?xedly attached thereto. When shaft 4‘!
is rotated, the coil It moves and the spring I 4
is tensioned. When ratchet wheel 8 has suf
?ciently moved shaft 4‘! so that the end of pawl
I3 contacts with the trip member 48, the pawl is
raised from engagement with the projection II
of- ratchet wheel 8 and is immediately thrown, by
the spring I4, into engagement with projection
35 I2 of ratchet wheel 8, and movable coil I6 re
turns to its initial position.
The electrical oscillation generator S has a
plate I‘I connected by wires I8 and I9 to brush
2!] bearing upon the rotary insulating disc 2I
40 which has the metallic rim22 connected by the
Wire 23 to the segment 24 having brush'25 bear
ing thereon. The brush 25 is connected by wires
26 and 27 to the winding of the ?xed coil I5 of
the variometer V, the other end of this coil is
connected by wire 28 to one end of the movable
coil I 6,'the other end of which is connected by
wires 29 and 30 to battery 53. The other side of
battery 53 is connected by wires II ‘I, H8 and 34
through resistance 35 and condenser 36, and
wires
31 and 38 to wire 39, and through wire 40
50
. to ?lament 40'.
The variation of position of the movable coil
I6 of the variometer V with relation to the ?xed
coil. I5 Varies the frequency of the oscillations‘
generated by the oscillator S and the introduction
55
of the rotary device or breaker B causes the elec
trical oscillations to be intermittently impressed
upon the lines 4! and 42 as impulses of varying
frequency.
60
degrees of a minute hand, as I. A ratchet wheel,
as 3, with only one projection therein will be
advantageous, where extreme accuracy is de
sired, in that there would be no error arising from
ratchet wheel has, in the form shown, four operé
ative projections or teeth, as 9, II], II and I2.
25 to shaft 41, and is spring pressed by spring I20.
30,
The
extent of movement of ratchet wheel 8, arm I3,
and movable coil I6 in relation to the movement 10
of hand I can be as desired, but in actual prac
The movement of coil I6 in relation to ?xed
coil I5 causes a change in the inductance of the
circuit including these coils, and condenser II9
whereby a desired range of ‘frequency change in
an oscillating electric current supplied by oscil
lator S is obtained. As the shaft ‘I rotates it
65
I causes the ratchet wheel 8 to rotate, and so move '
pawl I3 more and more from its initial position,
as shown in the ?gure, and so causes arm 46 and
shaft 41 to rotate more and more so as to cause
movable coil I6 to change its angle with relation,
' to ?xed coil I5.
The result of this movement is to cause a grad
ual change in the frequency transmitted to the
lines III and 42 as the minute hand'l rotates.
Applicant has provided that one rotation of the
such a single projection ratchet wheel whereby a
of the movable coil I6.
'
The impulse device B is driven from shaft 3 25
by a suitable train of gears indicated as a whole
by 43 and ending with the shaft 44 which drives
the disc 2 I. The speed ratio between shaft 3 and
shaft 44 may be as desired. Applicant prefers to
use a speed ratio of l to 3600 so that an impulse
is transmitted once each second.
The impulses generated by the. oscillator S
cause a drop across potentiometer 50 which af
fects the grid 5I of the ampli?er A. The plate
52 of the ampli?er A is connected in circuit with 35
the battery 53 and the primary 54 of a trans
former having a secondary 55 connectedto the
wires 4| and 42.
The wires III and 42 may be extended any dis
tance from what might be called the central sta 40
tion, illustrated by Fig. 1. At points along these
wires connections may be made to operate clocks.
The points of connection of secondary clocks in
Fig. 2 have been designated by I, II, III. The
construction and arrangements have been shown 45
in detail in connection with secondary clock
station I.
At each station a re?ex motor is positioned.
This motor is designated by R. The motor in
cludes, preferably, permanent magnet 55 having 50
gaps 5'! and 58. Two coils are positioned within
the permanent magnet ?eld: one, 59, a looking
or restraining coil; the other, 60 an operating
or responsive coil, only partly in the ?eld. With
no current ?owing coil 60 is held against the 55
stop ‘I4 by the biasing spring I21.
The operating coil 60 is constantly intermit
tently energized from the line wires 4| and 42
by a circuit as follows: line wire 42, wire BI, con
denser 62, reactance 63, wires 64, 65, and B6, 60
recti?er 61, wire 68, coil 60, wire 69, recti?er ‘III,
wires ‘II, ‘I2, and ‘I3, to the other line wire 4I.
Current ?owing in the above traced path energizes
the operating coil 68 so that it tends to move
away from the stop ‘I4, that is, in the direction of
the arrow ‘I5.
cs
The devices I52, 63, and ‘I6 are merely common
and well known devices for acting as an electrical
?lter to freely allow only the desired band of fre
quencies to enter the station from the line wires 70
M2 and 42.
The recti?ers 61 and ‘III together with recti?ers
‘I1 and ‘I8 insure the ?ow of current in one direc
tion only to the’ coil 60. As applicant’s central
station oscillator S, modi?edv in its action by the
75.
2,124,642
variometer V, and the impulse device B, sends to
the lines 4| and 42 impulses of alternating cur
rent of varying frequency, the coil 60 will be
in?uenced by what, in effect, are impulses of di
rect current, perhaps more accurately, an inter
mittent pulsating current.
The operating coil 59 has a constant tendency
to turn the shaft ‘Iii, but this tendency is re
sisted by the locking or restraining coil 59. The
10 restraining coil 59 is in a circuit, really in parallel
to the circuit of the operating coil inside of the
?lters, in which current flows as follows: line
wire 42, wire 65, condenser 52, reactance 53, wires
69, E5, 89, 85 and 82, recti?er 83, wire 84, coil 59,
15 wire 85, recti?er 86, wires 87, 88, feeding con~
denser 89 and wires 99, ‘I2 and T3 to line wire 4!.
Current flowing in the above traced path en
ergizes locking coil 59 so as to cause it to have a
tendency to prevent movement of coil 99, and if
sufficient current does flow in the coil 59, it does
actually prevent the oscillation of coil 60. At
times a sufficient current does flow through coil
59 to prevent operation of coil 99, and at other
times a sufficient current does not ?ow. The
25 determining feature is the condition of circuits in
cluding a variometer VV and condenser [2| in
parallel with the locking coil 59.
The circuit including variometer VV may be
considered as starting at the juncture of wires 8|
30 and 82 and being completed by wire SI to movable
coil 92 of variometer VV thence by connecting
wire 93 to the ?xed coil 94 of variometer W and
then by wire 95 to the juncture of wires 8'! and
39. If the fixed and movable coils 92 and 94 of
35 the variometer W are in a. proper relation one to
the other, the circuits, one including condenser
till, the other variometer VV, from the juncture
of wires SI and 82 to the juncture of Bl and 88,
are tuned to resonance for a particular frequency
40 of alternating current generated by the oscillator
S and supplied to the lines 4| and 42. If these
circuits are tuned to resonance for the particular
frequency, that is being sent out the circuits will
be of relatively high impedance so that a rela
lo
tively greater quantity of current will flow through
the locking coil 59 and so will prevent the opera
tion of coil 99, but if the shunt circuits are
not tuned substantially to resonance for the
particular frequency being delivered to lines 4i
50 and
then the impedance of the shunt circuits
will be relatively less, and so relatively less cur
rent will flow to coil 59, so that it is unable to
prevent the movement of operating or responsive
coil 59.
CH O!
I
As operating coil 69 moves, it operates, through
arm 522, the pawl 96 to move ratchet wheel 91
in the direction of the arrow 98. Ratchet wheel
91' is mounted to rotate about the shaft ‘I9, and
to carry with it the pinion 99 meshing with
60 a gear train I 99 connected to minute hand WI
and hour hand
I93 to shaft I943
with gear I96.
the direction of
I92 and thence through gearing
bearing the pinion I95 meshing
The gear wheel I95 rotates in
the arrow I07 carrying with it
the ratchet Wheel I98 having the projections I09,
HG, iii and ii
The projections contact with
and actuate the pawl H3 pivoted at H4 on arm
H5, which pawl is reset by trip member I25.
The arm M5 is connected to the shaft IIB which
is in turn connected to movable coil 92 of the
variometer VV, which is movable against biasing
spring I25.
When the operating coil 99 is operated, it not
only moves the minute and the hour hands Illl
and I92, but also moves movable coil 92 of the,
3
variometer VV. it continues to move these parts
until the movable coil 92 gets into such posi
tion that the circuits, one including the vari
ometer VV, the other the condenser I2l, are in
resonance with the particular frequency of the
impulses at that second being transmitted. As
soon as the resonance condition is established,
however, the impedance of the shunt circuits be
comes so high that relatively more current flows
through the locking coil 59 so that it is power 10
ful enough to prevent further movement of the'
operating coil 59.
As time flows on, and the master clock C at the
central station moves the variometer V, the fre
quency transmitted to the lines M and 42 changes, 15
so the condition of resonance of the shunt circuits
is departed from, so that the operating coil 69 is
able to move and shift the variometer VV so that
the shunt circuit is again put in the condition of
resonance with the particular frequency being 20
transmitted, and at the same time move the hands
59! and H32 of the secondary clock.
In actual practice applicant has generated a
frequency of approximately 141/2 kilocycles to
151/2 kilocycles at the central station as the band 25
of frequencies corresponding with the 360 degree
movement of the minute hand. The hour hand
being geared thereto and moving as usual. In
case impulses are transmitted for hours, minutes,
and seconds, each band would be about one kilo 30
cycle wide and be separated from the other bands
by a fairly small fraction of a kilocycle.
In applicant’s system, the master clock and its
variometer and associated parts are arranged so
that pawl I3 jumps from one projection to the 35
next so resetting the variometer V just prior to
the resetting of pawl I I3 and variometer VV.
If the wires 4| and 42 break or become dis
connected so that no energy flows to the second
ary clocks, they, of course, will get behind the 40
master clock, but upon re-establishing connec
tion they will start and not stop until they have
reached a position corresponding to the master
clock. As actually arranged, an impulse is sent
each second, which moves the minute hand
through a distance corresponding to 15 seconds,
and the variometer VV through a corresponding
interval. No further movement of the minute
hand takes place until the master clock minute
hand catches up with and passes in time the 50
minute hand of the secondary clock, by about
?fteen seconds, then the minute hand of the
secondary clock again moves. Impulses are being
sent out each second, but no motion of the opera
tion coil takes place except as stated. If the 55
wires are connected after a break, however, the
impulses. one a second, move the hands along,
15 seconds for each impluse, so that the hands
catch up at the rate of one minute in four seconds,
or one hour in four minutes.
It is understood that the embodiment applicant
illustrates, does not provide for the proper posi
tion of the hour hand except as it is moved by the
minute hand. This is the simplest embodiment
of applicant’s invention. In this form the hour
hand must either be right or placed right manu
ally whereupon it will remain right until the elec
trical energy ceases. When the energy returns
the clock will be right if the interval does not
exceed about one hour, If the interval is greater 70
the hour hand must be set by hand.
Although applicant has illustrated and de
scribed one particular physical embodiment of
his invention, and explained the principle there
of, and the construction and operation thereof, 75
4
2,124,642
nevertheless, he desires to have it understood
that the particular form selected is merely illus
trative but does not exhaust the possible physical
embodiment of means underlying the invention.
What I claim as new and desire to secure by
Letters Patent of the United States, is:
1. An electrical system which comprises means
to transmit predetermined frequencies, a master
clock mechanism in the transmitter, and tuning
means in the transmitter to transmit frequencies
which vary in accordance with the time position
of the master clock, a receiver including a circuit
to be tuned and a time indicating element asso
ciated therewith, means in the receiver circuit
and responsive to the applied frequencies to move
the time indicating element therein when the
receiver circuit is out of tune with the applied
frequencies, and means in the receiver circuit and
responsive to the applied frequencies to stop the
20 movement of the time indicating element therein
when the receiver circuit is in tune with the ap
plied frequencies.
2. An electrical system which comprises means
to transmit predetermined frequencies, a master
25 clock mechanism in the transmitter, and tuning
means in the transmitter and actuated by the
master clock mechanism to tune the transmitter
and transmit frequencies which vary in accord
ance with the time position of the master clock
30 .mechanism, a receiver including a circuit to be
tuned and a time indicating element associated
therewith, means in the receiver circuit and re
sponsive to the applied frequencies to move the
time mechanism therein when the receiver cir
cuit is out of tune with the applied frequencies,
and means in the receiver circuit and responsive
to the applied frequencies to stop the movement
of the time indicating'element therein when the
receiver circuit is in tune with the applied fre
40. quencies, and tuning means in the receiver circuit
and actuated upon movement'of the time indicat
ing element to bring the receiver circuit into tune
Withthe applied frequencies.
3. An electrical system which includes a trans
mitting device, a master clock, and means operat
ed by the clock to tune the transmitter in accord
ance with the time position thereof, and send out
a series of progressively different frequencies, a
receiving circuit to receive said frequencies, a
50 time indicating element associated with said re
ceiving circuit, means in the circuit and respon
sive to said frequencies to prevent the movement
of the time indicating element when the receiv
ing circuit is substantially in resonance with the
applied frequencies, and means in the circuit and
responsive to the applied frequencies to cause the
movement of the time indicating element when '
the receiving circuit is not substantially in reso
nance with the applied frequencies.
60
4. An electrical system which includes a trans
mitting device, a master clock, and means oper
ated by the clock to tune the transmitter in ac
cordance with the time position thereof, and to
send out a series of progressively different fre
65 quencies, a receiving circuit to receive said fre
quencies, a time indicating element associated
with said receiving circuit, means in the circuit
and responsive to» said frequencies to prevent the
movement of the time indicating element when
the receiving circuit is substantially in resonance
with the applied frequencies, and means in the
circuit and responsive to the applied frequencies
to cause the movement of the time indicating
element when the receiving circuit is not sub
75 stantially in resonance with the applied frequen
cies, and means in the receiving'circuit and oper
ated by the movement of the time indicating ele
ment to bring‘the receiving circuit into substan
tial resonance with the applied frequencies as the
5
time indicating element is moved.
5. An electrical system which‘ comprises a
transmitter to transmit a series of progressively
different frequencies, a variometer in the trans
mitter circuit to vary the frequencies transmitted,
a master clock mechanism associated with the
transmitter and connected to the variometer to
vary the frequency in accordance with the time
position of the clock, means operated by the clock
to interrupt the transmission of frequencies at
predetermined intervals of time, a receiving cir 15
cuit adapted to receive said frequencies, a time in
dicating element associated with the receiver cir
cuit, motor means in the receiver circuit and re
sponsive to the frequencies and connected to the
time indicating element to move it when the re 2O.
ceiving circuit is out of tune with the applied
frequencies, said motor means having a normal
position, means to restore the motor means to
normal position after each break in the frequen
cies transmitted, means in the receiver circuit 25.
and responsive to said frequencies to stop the
movement of the motor means when the receiver
circuit is in tune with the applied frequencies,
and a variometer in the receiver circuit and actu
ated by the time indicating element to bring the 30
receiver circuit into tune with the applied fre
quencies as the time indicating element is moved.
6. An electrical receiving device including a
circuit adapted to be tuned to a series of applied
frequencies, a time indicating element therein, 35
means responsive to said frequencies to actuate
said time indicating element when the circuit is
out of tune with the applied frequencies, and
means in the circuit and responsive to said ap
plied frequencies to stop the movement of the
time indicating element when the circuit is in
tune with the applied frequencies.
'7. An electrical receiving device including a
circuit adapted to be tuned to a series of applied
frequencies, a time indicating element therein, .~
means responsive to said frequencies to actuate
said time indicating element when the circuit is
out of tune with the applied frequencies, and
means in the circuit and responsive to said ap
plied frequencies to stop the movement of the 50
time indicating element whenlthe circuit is in
tune with the applied frequencies, and a tuning
means in the receiver circuit and actuated by and
upon movement of the time indicating element to
bring the receiver circuit into tune with the ap 55
plied frequencies.
'8. An electrical receiving device including a
circuit adapted to be tuned to a series of applied
frequencies, a time indicating element therein,
means responsive to said frequencies to actuate 60
said time indicating element when the circuit is
substantially out of resonance with the applied
frequencies, and means responsive to said applied
frequencies and in said receiving circuit to pre
vent the movement of the‘ time indicating ele
ment when the receiving circuit is substantially
in resonance with the applied frequencies.
9. An'electrical receiving device including a
circuit adapted to be tuned to a series of applied
frequencies, a- time indicating element associ 70
ated with said circuit, means in the circuit and
responsive to said frequencies to prevent the
movement of the time indicating element when
the receiving circuit is substantially in resonance
with the applied frequencies, and means in the 75
2,124,642
circuit and responsive to the applied frequencies
to cause the movement of the time indicating ele
ment when the receiving circuit is not substan
tially in resonance with the applied frequencies,
and means in the receiving circuit and operated
by the movement of the time indicating element
to bring the receiving circuit into substantial res
onance with the applied frequencies as the time
indicating element is moved.
10
10. An electrical receiving device including a
circuit adapted to be tuned to a series of inter
rupted applied frequencies, a time indicating ele
ment associated with the receiving circuit, motor
means in the receiver circuit and responsive to
15 the frequencies and connected to the time indi
cating element to move it when the receiving
circuit is out of tune with the applied frequencies,
said motor means having a normal position,
means to restore the motor means to normal posi
20 tion after each break in the frequencies received,
means in the receiver circuit and responsive to
said frequencies to stop the movement of the
motor means when the receiver circuit is in tune
with the applied frequencies, and a variometer
in the receiver circuit and actuated by the time
indicating element to bring the receiver circuit
into tune with the applied frequencies as the
time indicating element is moved.
11. An electrical receiving device including a
5
circuit adapted to be tuned to a series of fre
quencies, a time indicating element associated
with the receiving circuit, motor means in the
receiver circuit, said motor means including an
operating coil and a restraining coil, the operat 5
ing coil connected to and tending to move the
time indicating element in response to frequen
cies applied to said operating coil, said restrain
ing coil in circuit and responsive to said fre
quencies to restrain the movement of the oper
1O
ating coil only when the circuit is in tune with
the applied frequencies.
12. An electrical receiving device, including a
circuit adapted to be tuned to a series of fre
quencies, a time indicating element associated 15
with the receiving circuit, motor means in the
receiver circuit, said motor means including an
operating coil and a restraining coil, the operat
ing coil connected to and tending to move the
time indicating element in response to frequen
cies applied to said operating coil, said restrain
ing coil in circuit and responsive to said frequen
cies to restrain the movement of the operating
coil only when the circuit is in tune with the
applied frequencies, and tuning means in the 25
circuit and operated by and upon the movement
of the time indicating element to bring the cir
cuit into tune with the applied frequencies.
THOMAS W. VARLEY.
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