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Патент USA US2114620

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April 19, 1938.
'
B. WIENECKE
MULTISYSTEM TUBE
- Filed Feb. 5, 1934
2,1 14,620
Patented Apr. 19, 1938
'
UNITED STATES PATET
FFi€E
2,114,620
MULTISYS'I‘EM TUBE
Bruno Wienecke, Berlin, Germany
vApplication February 5, 1934, Serial No. 709,705
‘
In Germany February 6, 1933
4 Claims. (Cl. 250-275)
The subject matter of the present invention is tact between the anodes and the strips of mica,
a novel arrangement of the electrode systems in which might lead to disturbances, particularly
multi~system tubes for mounting the systems to when the system is loaded, by heating the anodes,
‘
be free of vibration, and a method of obtaining
5 a rigid assembly of the systems.
The arrange-
small spacers are provided, for example of ceramic ’
material, which upon the assembly of the total ‘5
ment and the method are for use both in con-
system structure are slipped over the cross bars
nection with recti?er tubes, and more particularly
secured to the anodes.
.
'
two-way recti?er tubes, as well as for power
ampli?er tubes and transmission tubes, insofar
10 as these possess a plurality of systems.
It has been found that without the arrange~
ment of the systems according to the invention
a displacement of the systems or the single parts
thereof frequently takes place by the vibration
The assembly of the total system on the pine
in accordance with the invention is now per
formed in such fashion that the total system rests 10
upon the pinch merely by means of the mica
braces in two-point or two-surface contact,
possibly with rectangular or trapezoidal cross
section. The diagonal braces are provided at a
15 of these tubes of relatively high output. Owing
to‘ this relative displacement of the systems or
system parts the tube data is naturally a different one, and the tubes are thus made in-
suitable point, preferably at the centre, with a '15
small metal plate, which may conveniently be
secured to said braces by riveting. Said metal
plates are secured, preferably by spot welding, to
capable of use.
short holding rods, which are fused into the pinch A, ,
20
.
It has also been found that in the production
of tubes of relatively high output as hitherto
known the most frequent error in manufacture
consists in rupture or fracture of the pinch. This
and secure in this way the entire system in its ‘20
position on said pinch.
The ?laments which may preferably be V
shaped are held by means of resilient leads con
is due to the fact that the electrodes, and more
25 particularly the anodes, are secured in direct
fashion to the leading or holding rods fused
into the glass pinch. In the heating of the me-
nected to each. of the ends of the ?lament. The V
centre-point of the ?lament is held ?rmly on a ‘25
cross strut between the diagonal braces. To sup
tallic parts necessary for outsassins purposes
there occurs, however, a strong conduction of
30 heat over these short holding rods to the glass
port the current leads for the cathode there is
provided in. accordance with the invention, a
transverse bracing, preferably composed of mica,
between the diagonal braces on either side, which 30
pinch, so that inadmissible thermal stresses are
transverse bracing ensures a sufficient spacing
produced, which may lead to rupture of the pinch.
between the current leads.
It may also occur on occasion that, owing to
overloading during operations, more particularly
35 the anodes become excessively heated, and that
also in this Case the glass Din-0h may become
fractured owing to conduction of the heat.
ACCOrding HOW to the invention, the electrode
systems are ?rst united to form a ?rm self-com
40 tained mechanical structure. This is performed
in such fashion that the single electrode systems
are so supported in relation to each other by
means 0f diagonal braces that the systems have
no possibility whatsoever of moving in relation
4 tO each other. The diagonal braces are produced
from a highly insulating material, which may be
readily outgassed, for example mica, and are
connected together at the point of intersection.
The diagonal braces, hOWEVer, may also be D‘1'0~
50 duced in one piece, which conveniently is in the
form of an X.
To these there are secured in
By reason of the
arrangement according to the invention it is
accomplished that insofar as the electrodes of a
certain system possess a certain‘ freedom of
movement at all in relation to each other, these
electrodes, for example the cathodes of the sys
tern, are unable to move
the direction from
anode to cathode, but only in a direction verti
cal thereto. This is particularly important in the All)
case of recti?er systems, in which the spacing
between cathode and anode is extremely small.
The assembly of the systems according to the
invention is illmtrated in the drawing in con
junction with a possible form of embodiment of a 45
two-way recti?er.
Fig. 1 is complete View of the system accord
mg to the invention, while in Fig, 2 there is
shown an elevation and in Fig. 3 a plan of the
systeln with the same reference characters as 50
in Fig. 1.
Y
accordance with the invention cross bars for
In Fig. 1, l is the glass pinch having the pump
holding the electrodes, for example the anodes,
tube 2 attached thereto, 3 and ii the box-shaped
which bars are mounted ?rmly in corresponding . anodes, and s and s the cathodes guided in the
55 borings in the diagonal braces. To avoid conform of a V. In the pinch there are fused the 5
2
2,114,620
holding rods 1 and 8, which at the same time
are constructed to form leads for the anodes.
Over these holding rods there is slipped and se
and the pinch, and a heat insulation is provided
between the anodes and the pieces of mica,
(6) The cathodes, which are preferably guided
cured the structure carrying the systems. The
anode systems are connected with each other by
in the form of a V, are secured on the one side
means of the cross-members 9 and ID.
diagonal braces, and at the two other ends are
This
connection causes on the one hand the combi
nation of the electrode systems to form a me
chanical unit, and on the other hand, insofar
10 as relative displacement of the electrodes is still
possible at all, provides security against the
danger of short-circuiting and other electrical
disadvantages. 9 and I!) are the diagonal braces
according to the invention, which’ consist of a
15 highly insulating material readily capable of be
ing outgassed, for example of mica, and are in
the form of an X. They are bored at the ends,
and carry the anodes by means of transverse bars
22 and 23 secured thereto, spacers 28, composed
20 for example of ceramic material, being provided
to avoid contact between the anodes and the
pieces of mica. There are also fused into the
pinch a middle holding rod II and the leads
l3 and M for the cathodes 5 and 6. The spac
ing between these electrodes is ensured by means
of a cross strut IS. The fixed holding of the
?laments at the bottom is performed by means of
the transverse rod 2! with the abutment 26,
whilst the upper lead is constructed to be elastic
30 by means of the resilient yokes 24 or 25 for each
?lament. The pieces of mica 9 and I0 carry at
the centre a circular metallic disc l6, which is
riveted ?rmly to the mica itself. By means of
the bent abutments I‘! and I8 furnished with
35 apertures the rigid system structure is slipped
over the holding rods 1 and 8 until it rests ?rmly
at two points or surfaces against the pinch at
I2, and is then welded to the rods 1 or 8 with
the assistance of the plate l9. At the same time
there are also welded to this plate l9 asuitable
to a transverse strut, which is mounted on the
secured resiliently in respect of each ?lament
section to avoid any irregular or insufficient ten
sion of these ?lament sections.
I claim:
10
1. In an electron discharge device a stem hav
ing a press portion, two cathodes, two box-shaped
anodes, two diagonal braces consisting of a high
ly insulating and highly vacuum-proof material,
the ends of said braces connected with each other 15
by four transverse rods and with said anodes
forming a mechanical unit without heat-conduc
tive connections, said unit being rested upon said
press portion in two-point contact by means of
said diagonal braces, the centre of gravity of 20
said unit situated below the upper surface of said
press portion.
2. In an electron discharge device a stem hav
ing a press portion, two cathodes, two box
shaped anodes, two diagonal braces consisting of
a highly insulating and highly vacuum-proof ma
terial, the ends of said braces connected with
each other by four transverse rods and with said
anodes forming a mechanical unit without heat
conductive connections, said unit being rested so
upon said press portion in two-point Contact by
means of said diagonal braces, the centre of grav
ity of said unit situated below the upper surface
of said press portion, said diagonal braces se
cured ‘against displacement by additional holding 35
means comprising holding rods fused in the press
portion and connectedwith metallic discs ?xed
in the centre of said diagonal braces.
_ 3. In an electron discharge device a stemhav
ing a press portion, two cathodes, two box
getter material 20, for example, magnesium, and 1 shaped anodes, two diagonal braces consisting of
the anode lead 21.
It is also possible, in addition to the electrode
systems assembled in accordance with the in
vention, to ?t coupling elements in the same vac
uum space, or to provide any additional electrode
systems, which are not assembled in the man
ner according to the invention.
The particular and essential features of the
50 present invention are to be regarded in the fact
that
(1) The bracing of the systems or system
a highly insulating and highly vacuum-proof
material, the ends of said braces connected with
each other by four transverse rods and with said
anodes forming a mechanical unit without heat—
conductive connections, said unit being rested
upon said press portion in two-point contact by
means of said diagonal braces, the centre of grav~
ity of said unit situated below the upper surface
of said press portion, a heat insulation compris
ing spaces of ceramic material provided between
said anodes and said diagonal braces.
parts in relation to each other is performed by
means of diagonal braces,
(2) The centre of gravity of the total system
55
structure is disposed as low as possible, preferably
below the supporting points for the system on the
' , 4. In an electron discharge device a stem hav
pinch,
(3)‘ The diagonal braces may each be produced
60 from a strong and preferably X-shaped piece of
material,
(4) The total system is mounted by (two~
point or two-surface) bearing of the diagonal
braces against the pinch, and additional holding
65 is performed by securing the total system to
holding rods, preferably by means of spot weld
mg,
(5) The arrangement is such that .no heat
conductive connection exists between the anodes
ing a press portion, two cathodes, two box-shaped
anodes, two diagonal braces consisting of a high
ly insulating and highly vacuum-proof material,
the ends of said braces connected with each
other by four transverse rods and with said
anodes forming a mechanical unit-without heat
conductive connections, said unit being rested
upon said press portion in two-point contact by
means of said diagonal braces, the centre of
gravity of said unit situated below the upper
surface of said press—portion, the lower end of
said cathodes secured ?rmly on a transverse strut
mounted on said diagonal braces, the upper ends
of said cathodes being held in resilient fashion,
cathode leads supported by a transverse brac
ing mounted in said diagonal braces.
BRUNO WIENECKE.
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