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Nov. 6, 1962
E. J. CARON ET AL
3,063,033
RADIO TUBE SOCKET
Filed March 19.‘ 1957
2 Sheets-Sheet 1
5h 64 W54
46“
FIG‘ 3'
FIG. 5.
INVENTORS
EUGENE J. CARON 8|
BY GEORGE W. CARTER
day. @5217
ATTORNEYS
Nov. 6, 1962
E. J. CARON ET AL
RADIO TUBE SOCKET
3,053,033
'
Filed March 19, 1957
.
2 Sheets-Sheet 2
"6
122/7
a h
F I G. H.
INVENTORS
EUGENE J. CARON
BY
GEORGE W. CAR
1
1
I
v
ATTORNEYS
/
United States Patent O?Fice
3,063,033
Patented Nov. 6, 1962
1
3,063,033
Eugene J. Caron, Collingswood, and George W. Carter,
RADIO TUBE SOCKET
separated as illustrated so as to be insulated from each
other.
The left hand ring 16 is provided for attachment by
soldering of the socket in a supporting chassis and the
same is true of the right hand end portion of the ring 24.
The rings 16 and 24 may be continued by metal discs on
the ends of the rod 14 so that they take the form of metal
caps.
Thus, the socket itself may be rigidly supported.
Ths invention relates to radio tube sockets and par
A left hand contact member indicated generally at 26
ticularly to sockets for tubes of very small size.
10 is formed of a ?at sheet of metal, desirably silver plated
There have been recently developed radio tubes of
as are the other metallic conductive contact elements of
generally cylindrical shape having lengths of the order
the socket. This contact member has several elemental
of one-half inch with overall diameters of the order of
portions of which the lowermost portion 28 is provided
three-eighths to one-half inch, such tubes being well
with an opening 30 provided by punching an extrusion to
adapted for inclusion in circuits occupying a minimum 15 form a ?ange 32 arranged to ?t over and to be soldered
of space. In particular, they are adapted for use in
to the metallic ring 18. At 34 there is a transverse bend
ultrahigh frequency circuits. It would be evident that
between
the portion 28 and the portion 36, the latter being
the utility of such vtubes depends upon the possibility
provided with an extruded inwardly projecting dimple 38.
of mounting them in sockets of correspondingly small
Another bend indicated at 40 delimits the lower edge of
size in which they may be properly held in removable 20 a portion 42 which is directed outwardly to provide a
fashion for replacement.
de?ecting cam action upon insertion of the tube. The
It is the general object of the present invention to
contact member 26 is of a spring metal, such as beryllium
Harrington, N.J., assignors to Radio Condenser Com
pany, Camden, N.J., a corporation of New Jersey
Filed Mar. 19, 1957, Ser. No. 647,059
7 Claims. (61. 339-—182)
provide socket construction for such tubes which are in
themselves very compact and to which direct connections
may be readily made, the latter being particularly im
portant in ultrahigh frequency circuits. The foregoing
and other objects of the invention will be apparent from
the following description, read in conjunction with the
accompanying drawings, in which:
copper.
The right hand contact member indicated generally at
44 is rather similar to the member 26 and of similar spring
metal, having its lowermost portion 46 provided with an
opening 48 extruded to provide a ?ange 50 which ?ts upon
and is arranged to be soldered to the metallic ring or cap
24. A bend 52 delimits the upper end of the portion 46
FIGURE 1 is a side elevation and FIGURE 2 is an 30 and above it the contact member is bifurcated by a slit
end elevation of a typical tube of the type for which an
54 to provide individual spring portions 56 which are
provided with bends 69 beyond which the end portions 62
vention;
are de?ected outwardly for camming engagement by the
FIGURE 3 is a side elevation of a socket for the re
heater buttons 8 of the tube. Each of the portions 56
ception of the tube of FIGURES 1 and 2;
35 is provided with an opening 64 in which there is pressed
FIGURE 4 is an end elevation of the left hand contact
an insulating ?tting 66, formed, for example, of Te?on
member shown in FIGURE 3 looking at the left side
and provided with a ?ange 68 arranged to abut and limit
thereof as viewed in that ?gure;
outward movement of the ?tting. Within each ?tting
FIGURE 5 is an end elevation of the right contact
there is ?tted a metallic contact pin 70 provided with a
member of FIGURE 3 viewed from the right hand side
head '72 rounded for engagement by a corresponding but
improved socket is provided in accordance with the in
- thereof;
FIGURE 6 is a transverse section taken on the plane
indicated at 6-6 in FIGURE 3;
FIGURE 7 is a side elevation and FIGURE 8 is an end
elevation of another form of miniature tube;
FIGURE 9 is a side elevation of a socket for the recep
tion of the tube shown in FIGURES 7 and 8;
FIGURE 10 is an elevation of the left hand contact
member of the socket, looking at the left thereof as viewed
ton 8.
Associated with the rings 20 and 22 are clip members
74 which may be of identical form and which are arranged
to engage the rings 10 and 12 of the tube. The form of
45 each of these will be evident from FIGURE 6. Each
comprises a spring wire, e.g. piano wire silver plated, bent
at 76 to provide upwardly extending legs 78 which are
bent to provide circular arc portions 80 to embrace and
be soldered to the rings 20 and 22‘. The legs then continue
‘ in FIGURE 9;
50 upwardly and are bent at 82 outwardly through somewhat
FIGURE 11 is an elevation looking at the right hand
more than a right angle to provide seats. They are then
contact of the socket as viewed from the right in FIGURE
bent inwardly at 84 to provide side portions 86 and then '
9; and
FIGURE 12 is a section taken on the plane indicated at
‘ 12__12 in FIGURE 9.
Referring ?rst to FIGURES 1 to 6, inclusive, a typical
tube is indicated at 2 which is provided with a ceramic
envelope 4 having at its left hand end a metallic button 6
which provides the anode connection. At its right hand
further inwardly to provide engaging portions 88 which
are spaced by less than the diameters of the rings 10 and
12. At their free ends the legs are everted outwardly at
90 to provide for a cam spreading action during insertion
of the tube. The wire used for each of the members 74
has a diameter slightly less than the width of the grooves
in which the rings 10 and 12 of the tube are located.
end as viewed in FIGURE 1 a pair of buttons 8 provide 60
The contact members 28, 74 and 46 are soldered to
the heater connections. Within groves in the body are
their respective rings with the socket taking the ?nal
metallic rings 10 and 12 providing, respectively, grid and
form indicated in FIGURE 3 when a tube is absent.
The lower ends of the contact elements may be soldered
cathode connections. The tube illustrated in FIGURE 1
to wires or other connecting elements of the desired cir
has an overall length of approximately one-half inch.
65 cuit. As will be noted in comparing FIGURES 1 and 3,
In accordance with the present invention there is pro
these ?gures being to the same scale, the spacing between
vided the socket shown in FIGURE 3 which comprises
the dimple 38 and each of the contact heads 72 is less
an insulating rod '14 of steatite or vitreous alumina,
than the overall distance between the faces of the but
though it may consist of other insulating material. On
this red 14 there are deposited by one of the usual metal 70 tons 6 and 8, though the outer ends of the portions 42
and 62 of the outermost contact members are more widely
izing processes rings 16, 18, 20, 22 and 24 which are
desirably tinned to facilitate soldering. These rings are
spaced. Accordingly, if the tube 2 is pressed down
wardly the end contact members are forced apart and at
3
the same time the legs of the contact members 74 are
spread apart so that the tube may ?nally rest in a posi
tion in which it is endwise compressed between the dimple
38 and the contact heads 7?. and transversely between
the legs of the contact members ‘72. Inward movement
of the tube is limited by the resting of the rings 1% and
12. on the seats provided by the bends 82, the tube being
urged downwardly against these seats by the portions
Li.
inwardly of dimples then securely holds the tube in posi
tion though it may be readily removed by pulling it out
wardly.
It will be noted that the members 124 are of
different lengths so that when the tube is inserted the dif
ferent diameter ?anges lie just inside the paired dimples
137. Good electrical contact is provided by the wiping
action of the embossings. By this form of socket as in
the case of that shown in FIGURE 3, there is provided a
small tube-socket assembly which is highly reliable in
of the legs below the bends 88 which tend to spring in
holding the tube in position while maintaining good con
10
Wardly to provide a downward camming action. The
nections to the electrodes. The soldering of the various
Wires of these legs are of such diameter that they are
contact members to their mounting rings provides a rigid
received freely within the grooves in which the rings it)
construction particularly maintained by the extruded
and 12‘ lie. Thus, good electrical contacts are provided
?anges of the end contact members. The intermediate
for the grid and cathode connections. Good spring con
contact members 74 and 124 do not require any special
tacts are also provided against the buttons 6 and 3. The ‘ ?anging, soldering being su?icient to hold them in posi<
tube is thus quite rigidly clamped in position but may
tion since the end members prevent the imparting to them
be easily removed by pulling the tube outwardly, the vari
through insertion and removal of the tube of any con
ous spring actions providing yielding movements of the
contact members to permit such removal.
It will be evident that there is thus provided a socket
of very small dimensions comparable with those of the
tube itself so that a minimum space is required for the
tube-socket assembly.
It will be evident that the socket construction may vary
‘with the electrode arrangement of the tube. For example,
if the tube is a diode having an indirectly located cathode,
the ring in may be missing and the corresponding spring
clip member 74 may be omitted. Or double contacts may
be provided at the left hand end of the tube corresponding
to those at the right hand end and these may provide all
siderable disturbing forces.
It will be evident that various details of construction
may be modi?ed without departing from the invention to
take care of special forms of tubes. For example, if a
single tube contains both ?anges and contact members
set in grooves, there may be used suitable combinations
of inner contact members as shown in the two modi?~
cations of the invention which have been described. Fur
thermore, different dispositions of the contact members
of the socket may be made to accommodate various ex
ternal terminal connections of tubes, for example, as
pointed out in connection with ?rst described modi?ca~
tion. The insulating member 14 or 106 of the socket
may, of course, be non-circular, e.g., rectangular. It is
arrangement at 44 could be provided at both ends of the
accordingly to be understood that the invention is not to
socket, one of the contacts such as '74 being provided
be regarded as limited except as required by the following
‘solely to locate the tube laterally and arranged asym
claims.
35
metrically with respect to the end contacts to insure place
What is claimed is:
ment of the tube in proper position.
1. A tube socket comprising an elongated member of
The general socket construction which has been de
insulating material, end spring contact members secured
'of the external terminals of the tube.
Then the contact
scribed is also applicable to another type of tube 92 which
to said elongated member, and at least one intermediate
is illustrated in FEGURES 7 and 8 and which comprises
contact member secured to said elongated member be
the ceramic body 9%, a button $6 providing an anode 40 tween said end members, said intermediate contact mem
connection w ich has an extension 93, a pair of heater
ber being provided with opposed leg portions embracing
connection buttons 1%, and ?anges 162 and
which
provide grid and cathode connections. The socket for
‘this type of tube is illustrated in FIGURE 9 and comprises
said elongated member and opposed leg portions adapted
for embracing a tube and making contact with a tube
electrode, said spring contact members being oppositely
‘the insulating rod 1% which may be of steatite, vitreous 45 disposed for contact with the ends of a tube embraced
alumina, or other insulating material on which are pro
by said intermediate contact member to limit longitudinal
vided the rings I198, 119, 112, 114, and 116 of the type
movement thereof relative to said elongated member, said
‘previously described, the rings 1% and 116 being desirably
intermediate contact member projecting from said elon
vcontinued over the ends of the rod to provide caps. The
gated member to de?ne a terminal for electrical connec
left hand contact member 118 is essentially the same as 50
tion.
the contact member 26 previously described though it is
2. A tube socket as de?ned in claim 1 wherein the
provided with a slot 126) to receive the button extension
tube embracing leg portions and the elongated member
93. The right hand contact member 122, may be iden
embracing leg portions are adapted for mounting said
tical with the right hand contact member 44 previously
tube
and member in laterally spaced ?xed relation to
‘described. The intermediate contact members 1124 take 55
one
another.
‘a form suitable for engagement with the ?anges 162 and
3. A tube socket comprising an elongated member of
164 of the tube. For this purpose they are desirably
insulating material, end spring contact members secured
formed of silver plated spring sheet metal, each being
to said elongated member, and at least one intermediate
doubled back on itself at the tabs 126 which provide for
contact member secured to said elongated member be
60
the making of external soldered connections. The con
tween said end members, said intermediate contact mem
tact members are provided with circular openings 128 for
ber being provided with opposed leg portions embracing
reception of, and soldering to, the rings 112. and 114.
said elongated member and opposed leg portions adapted
Bifurcation is provided at 130 to provide outwardly and
for embracing a tube and making contact with a tube
upwardly diverted portions 132 which are desirably em
electrode, said spring contact members being oppositely
bossed as indicated at 134 to provide good wiping con 65 disposed for contact with the ends of a tube embraced
tacts. The outer ends 136 are everted to permit camming
by said intermediate contact member to limit longitudinal
spring action as the tube is inserted. Paired dimples 137
movement thereof relative to said elongated member, said
are provided near the ends of the portions 132. When
intermediate contact member projecting from said elon
the tube is inserted, the end contact members 113 and
gated member to de?ne a terminal for electrical connec
122 are sprung outwardly as previously described and the 70 tion, said elongated member being one continuous length
?anges 102 and 10d engage and de?ect apart portions 132
of a cylindrical rod having axially spaced metalized sur
of the contact members 124. Final seating of the tube
face areas to which said contact members are soldered.
occurs when the body 94 rests on the ledges provided at
4. A tube socket comprising an elongated member of
138. Friction due to the spring action of the various
.insulating material, end spring contact members secured
‘contact members and location .of the flanges M2 and 164
3,063,033
to said elongated member, and at least one intermediate
contact member secured to said elongated member be
tween said end members, said intermediate contact mem
ber being bifurcated for reception of a tube and ar
ranged to make electrical contact with a tube electrode,
at least one of said spring contact members being bifur
7. A tube socket as claimed in claim 6 wherein said
end spring contact members are constructed to urge an
embraced tube toward said elongated member.
References Cited in the ?le of this patent
cated and having mounted upon each furcation thereof
UNITED STATES PATENTS
a terminal-engaging pin projected therethrough and in
sulated therefrom, the corresponding inner ends of said
pins being fully exposed.
5. A tube socket as de?ned in claim 1 wherein the in
termediate contact member is formed of spring metal,
and including two pairs of opposed legs having emboss
ings thereon, said embossings on each pair of opposed
legs facing each other.
6. A tube socket comprising an elongated member of
15
insulating material, end spring contact members secured
to said elongated member, and at least one intermediate
contact member secured to said elongated member be
tween said end members, sa-id intermediate contact mem 20
ber being provided with opposed leg portions embracing
said elongated member and opposed leg portions adapted
Brown ______________ __ June 22, 1909
Harvey ______________ __ July 25, 1911
Lyhne _______________ __ Dec. 19, 1922
Buchenberg __________ __ Nov. 30, 1926
1,845,047
2,016,470
2,397,985
2,405,554
2,462,622
2,473,526
Holland ______________ .. Feb. 16,
White ________________ __ Oct. 8,
Schriei’r'er ____________ __ Apr. 9,
Barbour ____________ __ Aug. 13,
Farrow ______________ __ Feb. 22,
Hood et al ___________ __ June 21,
2,478,887
2,836,807
2,965,873
Nelson ______________ __ Aug. 9, 1949
Goodfellow et al. ____ __ May 27, 1958
Sindelar ____________ _. Dec. 20, 1960
1932
1935
1946
1946
1949
1949
OTHER REFERENCES
for embracing a tube and making contact with a tube
electrode, and last-named leg portions being constructed
to urge an embraced tube toward said elongated member.
925,452
998,895
1,439,429
1,608,578
25
Electronic Equipment (Publication), February 1957
(pages 18-21).
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