close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2115691

код для вставки
April 26, 1938.
M. R. SCHULTE
2,115,691
RADIO TUBE AND THE LIKE
Filed‘ May 15, 1937
2 Sheets-Sheet 1
IN VEN TOR.
M?fon R 5c/ru/fe
April 26, 1938.
M. R. SCHULTE
‘
‘2,115,691
RADIO TUBE AND THE LIKE
Filed May 15, 1957
2 Sheets-Sheet 2
INVENTOR.
Mi/z‘an f7. fahu/i‘e
ATTORNEYS.
Patented Apr. 26, 1938
2,115,691
UNITED STATES PATENT OFFICE
2,115,691
RADIO TUBE AND THE LIKE
Milton R. Sehulte, West Orange, N. .L, assignm
to Tung-Sol Lamp Works Inc., Newark, N. J.,
‘a corporation of Delaware
Application May 15, 1937, Serial No. 142,773
18 Claims.
This invention relates to radio tubes, vacuum
tubes and other similar electronic discharge
devices.
‘
One object of the invention is a novel and im
5 proved method of spacing, centering and sup
porting the elements of the device within the glass
bulb.
A further object of the invention is a novel
and improved device of the character above in
10 dicated in which certain of the fastening ele
ments of conventional practice are. dispensed
with,‘the leakage path is maintained at a maxi
mum, electrical communication is established
between an electrode and the glass bulb and the
15 ‘manufacture and assembly of the elements is
facilitated.
More particularly, the invention resides in a
novel construction and method of mounting and
supporting the inner and outer mica spacing
strips and the centering and supporting clips of
radio tubes and the like.
A further object of the invention is a novel
and improved structure and method of spacing,
centering and supporting the electrode assembly
25 of a radio tube and the like whereby an improved
structure is obtained, the assembly is facilitated
and. the cost of manufacture is reduced.
For a better understanding of the invention
reference may be had to the accompanying
30 drawings forming a part of this application
wherein:
‘
Fig. 1 is an end view of a‘radio ‘tube embodying
the invention;
36
‘
Fig. 2 is a side View thereof;
Fig. 3 is an exploded view of certain of the
elements thereof;
Fig. 4 is a view of the elements shown in Fig.
3 after assembly;
.
Fig. 5 is a sectional view along the line 5-—5 of
‘
40 Fig. 4;
Figx? is a side view with parts broken away
at right angles to Fig. 4;
Fig. 7 is a side view of the electrode support
wires;
-
>
‘Fig. 8 is an enlarged view looking down upon
the end of the electrode assembly with the bulb
in section;
Fig. 9 is va side view corresponding to Fig. 8;
Fig. 10‘ is a section along the line I 0-10 of
50 Fig. 8 with certain of the parts shown in eleva
tion and broken ‘away;
' Fig. 11' is van enlarged sectional view taken
along the lines H—ll of Fig.v 9; and
Fig. ‘12 is a sectional View taken along the line
55" l2-=-l2 of Fig. ‘11.
‘
‘
(Cl. 250-—-27.5)
Referring to the drawings, I have illustrated
my invention as embodied in a conventional
radio tube and the like comprising the glass bulb
I, the base 2, the plug terminals 3 and the glass
press or stem 4 upon which the electrode assem
bly 5 is mounted.
The assembly 5 comprises
the conventional electrode or plate support wires
6, grid support wires 1 and cathode 8. Inner
and outer spacing strips of insulating material,
as for example mica, are indicated respectively 10
at H] and II.
The spacer i9 is provided with apertures near
the ends thereof for the reception of the support
wires 6. At the center of ‘the spacing strip is
provided an opening 13 for the reception of the 15
lower end of the cathode 8, and on the opposite
sides of this opening I3 there are provided open
ings l4 for the accommodation of the lower ends
of the grid support wires 1. The spacer Ill is
supported and held in a position at right angles 0
to the members 6, ‘l, and 8 and in spaced rela
tion to the electrode plate 9 directly by the sup
port wires 6.
This is e?ected by forming the humps. l5 in
the support wires 6 at points just below the elec
trode 9 upon which humps the spacer IE] is sup
ported and held in horizontal position. The
humps I 5 are oppositely formed, that is, the
hump in one wire 6 is formed on one side of the
plane of the wires and the hump in the other
wire 6 is formed on the other side of the plane
of the wires. Moreover, the upper surface N5
of these humps i5 is formed to merge upwardly
into the wire 6 in the gradual curve shown at ll,
with the surface 16 forming an angle a with the
upper portion of the support wire 6, which is
slightly greater than 90°. I have found that by
forming the humps 15 in the particular manner
and in the particular shape shown, and on the
opposite sides of the plane of the wire 6, that
the spacer 10 may be ?rmly and effectively sup
ported thereon without necessitating any other
fastening means either to the support wire 6 or
the electrode plate 9.
The method of assembly is indicated in Fig. 45
3 wherein the spacer H] is shown in position to
be threaded upon the support wires 6 and
brought down upon the humps l5 and there sup~
ported and locked in spaced relation to the other
members. of the electrode assembly 5. The unit 50
including the electrode plate 9 is then threaded
or inserted upon the support wires 6, with the
lower ends of the grid Wires 1 and cathode 8
passing through the openings l4 and 13 formed
in the spacer, as indicated in Fig. 4.
The spacer 55
2
2,115,691
III is supported by and is in part locked in the
position at right angles to the support wires 6
by the humps I5 formed in the support wires 6,
the particular curvature and formation of these
bearing surfaces effecting this purpose. Move
ment of the spacer I6 towards the electrode plate
9 is prevented by the friction between the spacer
and the support wires 6 and l and the cathode 8.
The next step in the assembly is the mounting
of the outer spacer I I and the centering and sup
porting clips 20. This spacer I I may be of any
form or shape, as for example in the particular
embodiment shown being rectangular, and is
provided at its ends with tongues or tabs I I’. It
15 is provided with openings or apertures I2, I3 and
I4, similar to those formed in the spacer IE), for
accommodating the outer ends of the support
wires 6, the cathode 8 and the grid support wires
‘I. The spacer II is threaded or inserted upon
the support wires 6 and ‘I and the cathode B after
the assemblying of the electrode unit 9, and is
anchored in place and spaced from the unit 9 by
means of the pair of centering, supporting and
anchoring metallic members or clips 20. Each of
these clips may be of any suitable metal or alloy,
such for example as nickel steel, and is formed
of an elongated strip preferably having its ends
20' turned at an angle b to the main body there
of. These clips 20 are preferably very thin and
30 ?exible and each is provided longitudinally with
an elongated strengthening and mica positioning
corrugation 2I on the same side towards which
the feet or ends 20' are turned and such corru
gation extends to the points 22 just short of the
turned ends or feet 20’. The corrugation and
corresponding groove are, at their outer ends, of
shallow depth but gradually increase in depth
and width toward a point midway of the ends of
the clip. Each clip is also provided with a slot
40 23 at the midpoint for the reception of a tab
II’ of the spacer II and each slot extends into
and through the corrugation 2I.
Each clip is
provided also with a transverse groove 24 at the
slot 23 and at a point midway of the length of the
This groove 24 is formed on the opposite
side of the clip from the corrugation 2| and cor
responds in curvature and radius roughly to the
curvature and radius of the support wires 6.
With the spacer II threaded over the support
50 wires 6 and ‘I and the cathode B the clips 20 are
assembled with the outer ends of the support
wires 6 disposed in the grooves 24 and with the
tabs II’ passing through the slots 23. In this
position the end edges 25 of the spacer II are
55 disposed in the grooved corrugations of the cor
responding clips 20. With the parts thus as
sembled and with the clips 20 resting upon the
electrode plate 9 the clips are mechanically and
electrically fastened to the support wires 6, as for
example, by welding the support wires to walls of
the grooves 24. The distance of the slot 23 above
the lower edge of a clip 20, when assembled and
fastened in position, determines the vertical spac
ing of the spacer II from the electrode plate 9,
65 and in the particular embodiment shown this slot
23 and the corrugation 2I are formed slightly
below the center longitudinal line of the clip.
With the spacers Ill and II thus mounted the
unit 5 including the press 4 is then slid into the
45 clip.
toward each other in directions parallel to the
spacer II to form generally the shape illustrated
in the drawings. Prior to this assembly it is
understood, of course, that the usual electrical
connections are made between the terminals car
ried by the press 4 and the terminals of the ele
ments of the electrode assembly.
The advantages of- the structure and the meth
od of assembly above described are indicated
above. Both spacers I0 and II are mounted 10
upon the support wires 6, thereby obviating the
necessity for any mechanical support or fasten
ing of these devices to the electrode 9. There are
no special fasteners, therefore, to reduce the leak
age path and add to the cost of manufacture, 15
and the shrinkage usually present in the mount
ing of the spacers according to conventional prac
tice is substantially eliminated. The positioning
and spacing of the spacers is automatically de
termined by the humps I5 and by the engage 20
ment of the clips 20 with the electrode 9 thereby
reducing the skill required for the assembly of
these parts yet assuring precision assembly. The
clips 20 are more durable and less expensive than
the conventional mica supports, and the clips 20 25
establish electrical communication between the
electrode and the glass bulb, thereby minimizing
static charges on the bulb and interference in
operation due thereto. The clips 20 may be eco
nomically and cheaply manufactured and a radio
tube is obtained which is characterized by its good
performance and ‘endurance due to the precision
in assembly rendered possible by this invention.
I claim:
1. In a radio tube of the character set forth, 35
an electrode assembly unit comprising a press,
outer support wires mounted thereon, an elec
trode carried by the wires, inner and outer spacer
strips mounted upon said support wires, said
wires having humps formed therein on the oppo 40.
site sides of the plane of the Wires and in spaced
relation to the electrode and supporting the inner
spacer strip, said outer spacer having tabs formed
on the end thereof, and a pair of elongated me
tallic clips extending transversely of the support
wires and welded respectively to the outer ends
thereof, said clips having slots for the reception
of said tabs and welded to said wires with the
clips resting upon said electrode and the ends
thereof engaging the interior walls of the bulb.
50
2. A device as claimed in claim 1 wherein each
of the metallic clips is formed with a longitudi
nal corrugation for the purpose set forth.
3. A device as claimed in claim 1 wherein each
of the metallic clips is provided with a longitudi 55
nal corrugation throughout the central body por~
tion thereof, said corrugation decreasing in depth
from a point midway of the length towards the
ends.
4. A device as claimed in claim 1 wherein each
of the clips is provided with a transverse groove
at a point midway of its length for receiving a
support wire.
7
.
5. A device as claimed in claim 1 wherein each
of the clips is provided with a longitudinal corru 65
gation throughout the central body portion
thereof with the ends of the outer spacer strip
disposed in the grooves of said corrugations.
6. In a radio tube, a press, a pair of support
70 bulb I in any conventional manner. When. the
unit is inserted into the bulb the resiliently ?ex
ible clips 20 assume the curved forms indicated
wires mounted thereon, an electrode assembly 70
in Figs. 1, 8, and 11, the feet 20' engaging the
interior of the bulb I and thereby causing the
75 ends of each of the clips 20 to bend inwardly
relation to said unit and an insulating spacer
unit carried by said support wires, said support
wires having humps formed therein in spaced
strip having apertures therein for the reception
of the support wires and resting upon said humps.
2,115,691
7. A device as claimed in claim 6 wherein the
humps of the support wires are formed on the
opposite sides of the plane of the wires and each
hump is provided with an outer surface formed
at an angle greater than 90° to the wire, said
surface merging into the wire in a gradual curve.
8. In a radio tube, an electrode assembly con
tained in said tube and having a pair of metal
centering and supporting clips and a spacer strip
10 anchored in position solely by said clips, said
clips having their ends engaging the interior of
the wall of the tube and bent outwardly from each
other.
9. In a radio tube, an electrode assembly unit
15 supported within said tube and mounted upon a
pair of support wires, said unit including a spacer
strip threaded over said wires and a pair of cen
tering and supporting metallic clips extending
transversely of the tube and engaging the interior
20
wall thereof, said strip having portions thereof
disposed in the plane of and engaged by said clips
and said clips being in engagement with said sup
port wires.
10. A device as claimed in claim 9 wherein said
25 clips are disposed in planes parallel to the axis of
the tube. and have their ends turned outwardly
from each other.
11. In a radio tube, a press, a pair of support
wires mounted on said press, an electrode as
30 sembly unit carried by said support wires, in
cluding a pair of metallic clips extending trans
versely of the wires and welded thereto and a
spacer strip anchored in position longitudinally
of the support wires by said clips, each of the
35 metallic clips being formed of a thin ?exible
strip
and
with
a
longitudinal
in the central body portion of a clip and increas
ing in. depth towards the central point and each
of said clips having a slot for the reception of a
tab formed in said spacer strip.
14. In a radio tube, an electrode assembly unit
including a pair of support wires, a pair of elon
gated metallic strip centering and spacing clips
having transverse grooves formed in the main
body portions thereof and extending transversely
of the Wires with the latter disposed in said 10
grooves and fastened and electrically connected
therewith, and a spacer strip threaded over said
wires with the ends of said spacer strip engaging
the metallic clips and thereby anchored in posi
tion longitudinally of the support wires.
elongated metallic strip centering and spacing
clips. having longitudinal grooves formed therein,
said clips extending transversely of and fastened 20
?at against said wires, and a spacer strip having
its ends disposed in the grooves of'the aforesaid
clips, and being thereby anchored in position
longitudinally of the wires.
16. In a radio tube, an electrode assembly unit 25
comprising a pair of support Wires, a pair of elon
gated metallic strip centering and spacing clips
having grooves formed longitudinally thereof and
slots formed therein for a portion of the length of
the grooves, said clips extending transversely of 30
the wires and fastened ?at against the same, and
a spacer strip having its ends disposed in said
grooves and provided with tabs extending
through said slots, said spacer strip being thereby
anchored in position longitudinally of the support 35
wires.
17. In a radio tube, an electrode assembly unit
12. In a radio tube, a press, a pair of support
comprising a pair of support wires, a pair of
elongated metallic strip centering and spacing
clips extending transversely of the wires and
wires mounted on said press, an electrode as
sembly unit carried by said support wires,
including a pair of metallic clips extending trans~
versely of the wires and welded thereto and a
spacer strip anchored in position longitudinally
of the support wires by said clips, each of the
45 metallic clips being formed of a thin ?exible strip
and with a longitudinal corrugation throughout
its central body portion, with the ends turned
outwardly and engaging the interior wall of the
bulb.
13. In a radio tube, a press, a pair of support
wires mounted on said press, an electrode assem
bly unit carried by said support wires, including
groove formed on one side thereof for the recep
tion of a support wire and fastening the same
thereto and having an elongated corrugation ex
tending throughout the main body portion there
anchored in position longitudinally of the support
wires by said clips, each of the metallic clips being
from that of said transverse groove, said corru
length for the reception. and fastening of a sup
port wire, with a longitudinal corrugation formed
40
fastened flat against the same, said clips having
slots formed centrally in the main body portions
thereof and a spacer strip with its ends disposed
in said slots for anchoring the strip in position
longitudinally of the support wires.
45
18. In a radio tube, a metallic clip for flexibly
centering an electrode assembly unit within the
glass bulb thereof, consisting of a thin narrow
elongated metallic: strip having a transverse
a pair of metallic clips extending transversely of
the wires and welded thereto and a spacer strip
formed with a groove at a point midway of its
15
15. In a radio tube, an electrode assembly unit
comprising a pair of support wires, a pair of
corrugation
throughout its central body portion.
55
3
50
of and disposed on the opposite side of the strip
gation gradually tapering off in depth toward the
ends thereof.
MILTON R. SCHULTE.
55
Документ
Категория
Без категории
Просмотров
0
Размер файла
571 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа