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Патент USA US3095529

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June 25, 1963
Filed June 2, 1961
2 Sheets-Sheet 1
! VE ToRs
f _ er
Joseph M H‘:
June 25, 1963
Filed June 2, 1961
2 Sheets-Sheet 2
Char/es Fryer .4
Joseph h.’ FIT:
United States Patent 0 Nice
Patented June 25, 1963
velope 11 having mounted therein an insulator 28 made
from a suitable material such as glass, steatite or alumina
Charles F. Eyer, Williamsport, and Joseph W. Ritz, Mon
toursville, Pa., asslgnors to Sylvania Electric Products
ceramic formed to support electrode members 16, 18 and
20. Electrode 14 is centrally positioned and integrally
Inc., a corporation of Delaware
united with ‘a circular anode plate 22.
Filed June 2, 1961, Ser. No. 114,459
6 Claims. (Cl. 313-188)
Electrical con
nectors extend through stem button 12 for purposes of
providing interconnections between the tube electrodes
and the external operating circuit.
This invention relates to gaseous discharge devices and
Anode sleeve '23 sur
rounds anode electrode 14 and serves to space anode 22
more particularly to devices of this type which employ a 10 above supporting insulator 28.
number of electrodes electrically connected together.
Arranged in a cylindrical array about the anode 22‘ are
These connections are generally made by employing vari
three groups of wires or rods. The wires 16 form the
ous expedients such as wiring external to the device or
counting cathode group and extend through the insulator
complicated interconnections of the electrodes internally
disc 28 to connect with leads 46 which pass through the
of the device.
15 stem button 12 and beyond for external connections.
Where the number of electrodes to be operated at the
The next group of wires constituting guide rods 18 all
same potential become numerous and particularly where
extend substantially through the insulator disc 28 and
there are several groups of electrodes operable at differ
there terminate except for one rod 18 which is connected
ent potentials with the electrodes of each group at a com
base lead 48. This lead is connected with a pulsing
mon potential, as in switching and counter tubes, these 20
during tube operation. In like manner, the last
connections, ‘usually welded, are very numerous and dif
group of wires 20 forming the second set of guide rods
?cult to make. Such a complex network of connections
also extend through the supporting insulator 28 and there
aiiords many possibilities of poor electrical contacts,
terminate except for the single rod 20 which connects
short circuits between the connecting wires, and other
with the external pulsing circuit by connection with base
mechanical and electrical failures. For example, a dec 25 lead 50.
ade counter tube employing two guide rods per cathode
The insulating wafer 28 may be of convenient diameter
requires thirty-one wires, one of which is an anode wire.
to suitably accommodate and circularly space
At least ten welds are made between Wires forming the
all of the rods except the anode lead 14, which is com
electrodes of one group of guide rods and a like number
of welds are made between other wires forming elec 30 nected to lead 44 and passes axially through the centrally
apertured insulator 28 as shown in FIG. 2. Both planar
trodes of the second group of guide rods. Also, since
surfaces of this supporting insulator 28 contain perma
the electrodes of one group are not adjoining one another,
nently bonded conductors for circuits to be hereinafter
it is necessary to cross connecting wires, thereby requir
ing the use of a number of insulators to separate the
If desired, the ceramic disc 28, with supported elec
trodes I6, 18 and 20, may be further incorporated into
the tube structure by threading the lower ends of these
discharge device which employs a plurality of electrodes
through suitable holes in a spacer shield 26,
at like potential with simple electrode interconnecting
which might extend to the inner wall of en
conductors and with relatively .few electrical joints.
11. This mica spacer is shown snugly positioned
A further object of the invention is to interconnect 40 velope
against the bottom of supporting insulator 28 and the
electrodes of like potential so as to avoid the possibility
electrodes are de?ected outwardly toward the pe
of a short circuit with electrodes at another potential.
riphery of the insulator 28, thereby positioning the elec
It is a still further object of the invention to distribute
trode rods for connection with the base leads and for
these interconnections interiorly within the device in a
groups of connecting wires.
It is an object of this invention to provide a gaseous
anchoring mica spacer 26.
manner to enable the device to be made of small dimen
within the envelope 11 as well as to shield the envelope
A further object is the simpli?cation and ruggedizing
base from sublimation products generated within the
upper poition of the tube during operation. Also, the
of a gas tube adapted for economic fabrication and hav
ing improved electrical characteristics.
The foregoing objectives are achieved in one aspect of
the invention by theprovision of a simpli?ed gaseous
discharge device wherein a plurality of electrodes are
suitably supported by an insulating disc. Both the upper
and lower surfaces of this disc contain bonded conductors
for interconnecting electrodes of like potential without 55
the use of numerous welds and extra connectors.
For a better understanding of the invention, reference
is made to the following description taken in conjunction
with the accompanying drawings in which:
FIG. 1 is an elevation view of a counter tube embody
ing one aspect of the invention, partially in section and
with some parts omitted in the interest of simplicity;
FIG. 2 is a plan view of a supporting insulator which
may be utilized in tubes illustrating bonded circuits on
both surfaces thereof; and
FIG. 3 is a sectional view taken along line 3-3 of
FIG. 2 showing ‘one means for holding the electrodes in
The spacer 26 serves to prop
erly position and hold the electrode mount structure
spacer protects the bonded conductor array on the under
surface of supporting insulator 28 from possible damage
during mount fabrication and processing.
During operation of a counter tube employing a gas
eous atmosphere and the structure set forth, the anode
disc 22' is positive with respect to the individual cathodes
16, all of which have a ?xed potential applied thereto.
Upon energization, a gaseous discharge occurs between
the anode and one of the cathodes. The rods 18 and 20
form guides or temporary cathodes adapted to shift the
60 discharge from a ?xed potential cathode 16 to the next
adjacent ?xed potential cathode 16 upon application of
appropriate sequential pulses to the guides. These two
guides are used to ensure the gaseous discharge transfer
to the next cathode so that the discharge will not revert
65 back to the previous counting cathode 16.
Since all of the rods 20 and all of the rods 18 are
pulsed, respectively, simultaneously, each set may be per
manently connected together as a separate group. The
wire 18 group and ‘the Wire 20 group have respective base
Referring to the drawings, a counter tube 10 of the
leads 48 and 50 as shown in FIG. I.
decade type is shown for purposes of illustrating one
To e?ect the grouping connections of the wires, in
aspect of the invention. The tube comprises a glass en
sulating disc 28 has bonded thereto an integral structure,
position and achieving conductor contact.
as an array of bonded conductors which, for example,
tively bonded insulator electrode assembly desirably
allows pre-testing of circuitry before the electrode mount
structure is completed. Accordingly, there is provided
of wires, with radial ?ngers 32 bonded to every wire in
a compact tube which is simple and economical to man
the common group. In a preferred form of the invention,
see FIG. 2, and to avoid the radial ?ngers from approach U! ufacture and has an assurance of improved electrical
ing too close to one another, the conductive bonding for
Although several embodiments of the invention have
one common group of wires is placed on the upper face
shown and described, it will be apparent to those
of the support insulator 28, and the other conductive
skilled in the art that various changes and modi?cations
bonding is placed on the lower face. This conductor
material can be applied as a metallic paint or a die-cut 10 may be made therein without departing from the scope
of the invention as de?ned by the appended claims.
metal tape by any conventional method. Rods 20 are
Having thus described the invention, what is claimed is:
shown electrically connected on the top of insulator 28
l. A multi-electrode gaseous discharge device having
and rods 18 on the bottom of insulator 28. Each circuit
an envelope with a multiplicity of internal electrodes
comprises annular portion 30 of relatively small radius
positioned inwardly of the circle of wires 16, 18 and 20 15 therein operable at one potential, an insulator supporting
the electrodes, and means for interconnecting said elec
in the insulator, with radial ?ngers 32 extending out
trodes comprising bonded conductors on a face of the
wardly from the circle and bonded to each of the respec
may be in the form of a circle 30 for each common group
tive wires 18 or 20 of this array of circumferential wires;
suppont insulator, said conductors having portions elec
trically connected to said electrodes.
2. A gaseous discharge device having an envelope with
several groups of electrodes therein, one of said groups
In order to rigidly anchor electrode rods 16, 18 and 20
being adapted to have one potential applied thereto and
in support insulator 28 and to ensure good electrical
another of said groups being adapted to have another po
bonding between conductive ?ngers 32 and electrode
tential applied thereto, a common insulator supporting
wires 18 and 20, the electrode rods and the support in
the electrodes, means for interconnecting the electrodes
sulator are mounted as shown in FIG. 3. On support
comprising a conductor on a face of the support insulator
insulator 28, the apertures for electrodes 16 and 18 have
having portions electrically bonded to said one electrode
cavities or recesses 29 at the top, while apertures for
group and a conductor on the opposed face of the support
electrodes 20 have no top cavities. This progression of
having portions electrically bonded to said other
two cavities and no cavity is repetitive around the circle
of apertures. As will be explained subsequently, this 30 group of electrodes, and at least one base lead connected
to each of said groups of electrodes.
cavity arrangement reduces the electrical shorting possi
3. A gaseous discharge device having an envelope and
bilities generally caused by cathode-anode sublimation
a cylindrical insulator disc, a plurality of elec
deposits on the top surface of support insulator 28. Pref
trodes operable in groups positioned in a circular array
erably each electrode lead 16, 18 and 20 is formed to
thereby forming two separately integrated electrical
provide a localized area of increased diameter shown as
upset 21. These upsets 21 are larger than the aperture
supported by said insulator and arranged enar the periph
ery thereof, a ?rst conductor bonded to one face of the
support insulator and having ?ngers connected to one
diameters in support insulator 28 so that they may serve
electrode group comprising every third one of said elec
as upper electrode stops in the cavities 29 for electrodes
16 and 18 and as the stops on the top surface of the 40 trodes, a second conductor bonded to the opposed face
of the support insulator and having ?ngers connected to
support insulator 28 for electrodes 20. Preferably all
‘another electrode group comprising every third one of
electrode rods 16, 18 and 20 are also swaged to provide
said electrodes next adjacent said one electrode group, and
upsets on the under surface of support insulator 28 to
a lead connected to each bonded conductor and each re
thereby rigidly anchor the rods on the disc. Those elec
maining electrode in the array extending exteriorly of the
trode rods not requiring external connections may be cut
adjacent to the bottom swages 24. Electrode rods 16, 45 envelope.
4. A gaseous discharge device having an envelope and
being of the counting cathode group, have no connection
including a supporting insulator disc, an anode, a lead
with bonded conductors on support insulator 28 but are
attached to said anode extending exteriorly of the en
within recesses 29 on the top surface of 28 so as to be
velope, at least there groups of wires supported by said
insulated from sublimation deposits. Guide rods 18 are
insulator disc in a circular array, each group comprising
likewise within top recesses 29 for protection from sub 50 every third wire of said array, a ?rst conductor bonded to
limation but have a ?rm contact with the lower bonded
one face of the support disc comprising an annulus of
conductor 32 by means of swages 24. A small amount
smaller diameter than the diameter of said array of wires
of electrical bonding material, such as solder, may be
having radial ?ngers extending toward and connected to
applied to the swage-conductor areas on the insulator to
ensure a permanent electrical connection. Associated
guide rods 20 set directly on the conductive material 32
bonded to the top surface of support insulator 28. A
small amount of electrical bonding material, such as
solder, may also be applied to the upset-conductor areas
the second group of said wires, a second conductor hav
ing substantially the same form as said ?rst conductor
bond-ed to the other face of the insulator connected to the
third group of wires, and an individual lead extending ex
teriorly of the envelope connected to said ?rst conductor,
said second conductor, and each wire in said ?rst group
to ensure a permanent electrical connection for rods 20. 60
of Wires.
The electrical interconnections for electrode rods 20 are
5. A gaseous discharge device adapted to be electrically
actually enhanced by the cathode-anode metallic sub
limation deposits occurring during tube operation.
To conduct the pulses to the respective sets of wires 18
and 20, as explained heretofore, one only, of each of
the wires 18 and 20 need be connected to the external
base leads 48 and 50 respectively. When a decade
counter is employed, there projects exteriorly of the tube
the anode lead 44, the ten ?xed potential counting cath
ode leads 46 and the two guide rod leads 48 and 50 to
provide a total of thirteen leads.
The above-described tube structure employing an in
sulator with bonded conductors eliminates the need for
numerous welds, separate buss conductors and the asso
ciated insulators heretofore required. Also, the conduc
pulsed including an envelope, a circular ceramic support
ing insulator mounted therein, an anode lead axially tra
versing the support insulator and having a circular anode
surrounding and electrically connected to said lead, a
circular array of wires comprising three groups of wires,
the ?rst group of wires traversing the insulator with their
lower ends extending below the insulator, said ?rst group
of wires being arranged near the periphery of the insu
lator, the second group of wires being arranged alternately
to the Wires of said ?rst group near the periphery of the
insulator, said second group being formed to conduct
pulses to positions opposite the anode disc, at ?rst annular
conductor bonded to one face of the insulator centrally
of the circular Wire array having substantially radially ex
tending conductive ?ngers connected to all of the wires of
another of said groups being adapted to have another p0
said second group, at least one of the wires of the second
group extending below the insulator, the third group of
said wires being arranged similarly to said second group
with each successive wire of the third group spaced be
tween successive wires of the ?rst and second groups, all
of said wires being substantially equally circumferentially
tential applied thereto, a common insulator supporting
the electrodes having one group of relatively small aper
tures formed therein associated with said one electrode
group and another group of relatively small apertures
formed therein associated with said other electrode group,
one face of said insulator having relatively large recesses
terminating at said relatively small second group apertures,
spaced from each other, and a second annular conductor
means for interconnecting the electrodes comprising a con
having conductive ?ngers formed substantially the same 10 cluctor on said one face of the support insulator having
as said ?rst conductor bonded to the other face of the
portions electrically bonded to said one electrode group
insulator and connected to the wires of the third group,
only and a conductor on the opposed face of the sup
one of the wires of said third group extending below the
port insulator having portions electrically bonded to said
insulator, whereby independent connections externally of
other ‘group of electrodes only, and at least one ‘base lead
the device may be made to the anode and to each of the 15 connected to each of said groups of electrodes.
wires of the ?rst group with one single external connec
References Cited in the ?le of this patent
tion to each of the second and third groups of wires.
6. A gaseous discharge device having an envelope with
several groups of electrodes therein, one of said groups
Williams et al __________ __ July 21, 1959
being adapted to have one potential applied thereto and 20 3,025,427
Turner et al. _________ .._ Mar. 13, 1962
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