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Патент USA US2400531

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May 21, 1946>
_H. .1. BENNER
v
2,400,531
RADIO APPARATUS
Original Filed May 24, .1944
W235E535;
8’ Quiz: Q QM
@6112; .'
2,40%531
Patented May 21 , 1946
UNITED STATES PATENT OFFICE
2,400,531
RADIG APPARATUS
Howard J. Bonner, Longmeadow, Mass, assignor
to The'F. W. Sickles Company, Chicopce, Mass...
a corporation of Massachusetts
Original application May 24, 1944-, Serial No.
537,129. Divided and this application March 24,
1945, Serial No. 584,644
6 Claims. (Q1. 250--l6)
around which wires may be wound that are
This invention relates to improvements in
soldered to the said terminals.
radio'apparatus and is directed more particu
An inner face ii’ of the condenser is provided
larly to condensers and intermediate frequency
with a projection l4 and a socket 16. A half
assemblies.
hole is is provided in the upper part of said face
This application is a division of application
and a relatively larger half-hole 2'?) is provided in
Ser. No. 537,129 ?led by me May 24, 1944.
the lower part thereof.
One object of the invention is the provision
In one way two such condensers are employed
of a ?xed condenser which is particularly adapted
by placing their inner faces together so that
for use in connection with intermediate fre
10 the projection of each face is received in the
quency transformers and the like.
socket of the other. In this relation the half
Another object of the invention
the pro~
holes provide an upper hole and a lower hole.
vision of an intermediate frequency transformer
A bracket 22 has a horizontal part 213 and de
which is characterized by novel components in
pending arms 26 provided with tapped holes 28.
cluding the condenser.
15
A bushing 30 has an upper part 32 that ex
Various other novel features and advantages
tends
through bracket part 25 and is spun over
of the invention will be hereinafter more full‘?
so as to be fast to the bracket 22. This part 32
referred to in connection with the following de
of the bushing fits in the half-holes 18 of the
scription of the invention in the form at present
condensers when they are in back to back rela
preferred.
20 tion. A lower part; 34 of the bushing is received
In the drawing:
in the half-holes 20 of the condensers when in
Fig. l is a side elevational view of the com
ponents of an intermediate frequency transformer
embodying the novel features of the invention;
Fig. 2 is a perspective View of the condenser
of the invention;
Fig. 3 is an elevational view of the condenser
shown in Fig. 2; and
Fig. 4 is a side elevational View of an inter
mediate
novel features
frequency
of the
transformer
invention. embodying
Referring now to the drawing more in detail,
the invention will be fully described.
A condenser is'represented by 2 which includes
a body A of plastic material molded to enclose
back-to-back relation and is spaced inwardly
from the sides of the half-holes. A collar por—
tion 3| of bushing abuts the upper side of half
holes 20.
The bushing 39 is internally screw threaded
to threadedly receive a screw 36 and a lock wash
er 3% threadedly engages said screw 36.
The condenser 2 has a vertical groove 1 in its
outer face so that when a pair of condensers
are in back to back relation the parts 26 of the
bracket are received in the grooves ‘I.
A tube 42 having a. relatively thin wall and
- made from suitable material so as to act as a
coil support carries one or more inductance coils
M and 45 which may be the primary and sec
ondary of an intermediate frequency trans
or some other suitable composition which is
former or the like. The upper end portion of
used for molding condensers and the like.
40 tube t2 is receivable in half-holes 29 of con
The condenser may include thin sheets of
densers with the end in abutment with collar 3|.
dielectric material such as mica which carry or
A casing 50 usually called a “can” is prefer
have therebetween thiometal plates. The metal
ably made from metal and has a bottom wall 52
plates are alternately connected to the spaced
and side walls 54 with an open upper end.
terminals 5 and is accomplished by a metal clip
An adjusting screw 60 threadedlyengages the
8 secure’ to each terminal which
bent around
lower wall 52 and a lock washer 62 is in threaded
the ends of the condenser elements.
engagement therewith, as shown.
condenser may consist of thin plates of
In the assembled relation of the parts the low
mice which may carry‘ a metal plating or coating
er end of tube 42 rests on the bottom wall 52 of
with thin strips of metal foil extending from the 50 can 56 and the upper end portion is disposed
plating to the clips 8 alternately so that one set
in half-holes 2B of the condensers 2 with the
portion 34 of bushing 30 in the said upper end
of metal plating is connected to one terminal
portion.
while the other set is connected to the other
Holes '58 are provided in opposite walls 54 of
terminal.
7
can 56 to receive screws 12 engageable in tapped
The. terminals 6 may have reduced portions ill
The
a condenser
material of
from
the body
whichmay
extends
be Bakelite,
terminals
rubber
2
2,400,531
holes 28 of bracket 22 for holding the parts in
ing an upper portion extending across the upper
assembled relation as shown in Fig. 4.
sides of said condensers, and side arms extend
ing downwardly therefrom at outer sides of said
condensers, a bushing carried by the upper por
tion of the bracket disposed in the upper por
Iron cores 66 and 68 are ?xed to inner ends
of the screws 36 and 60. As the screws are ro
tated in one direction or the other the cores are
moved axially and being disposed within the
tube 42 in the assembled transformer they are
moved relative to the coils 44 and 46 for turning
the same.
tion of said opening, a central tube having its
upper end in the lower portion of said opening
and extending downwardly from the condensers
and relative to the casing, coils ?xed in spaced
The components are arranged in compact and
efficient relation while the screws are accessible
relation on said tube, and separate screws thread
ed in said bushing and in said lower wall pro
for adjusting the iron cores. The condensers
vided with iron cores in said tube and related
have inter?tting parts on inner faces to hold
to said coils.
them against relative shifting when in back to
4. A transformer assembly comprising in com—
back relation and the novel holding means holds 15 bination, a casing having a bottom wall and side
the assembly in the casing.
walls extending upwardly therefrom, a pair of
The invention may be embodied in other
condensers in back to back relation between
speci?c forms without departing from the es
upper ends of opposite side walls, adjacent inner
sential characteristics thereof. Hence, the pres
sides of the condensers provided with half-holes
ent embodiments are therefore to be considered 20 forming an axial central opening, a bracket hav
in all respects merely as being illustrative and not
ing an upper portion extending across the upper
as being restrictive, the scope of the invention
sides of said condensers, and side arms extending
being indicated by the appended claims rather
downwardly therefrom at outer sides of said con~
than by the foregoing description, and all modi
densers, a bushing carried by the upper portion
?cations and variations as fall within the mean
of the bracket disposed in the upper portion of
ing and purview and range of equivalency of the
said opening, a central tube having its upper end
appended claims are therefore intended to be
in the lower portion of said opening and extend
embraced therein.
ing downwardly from the condensers and relative
What it is desired to claim and secure by Let
to the casing, coils ?xed in spaced relation on
ters Patent of the United States is:
said tube, and separate screws threaded in said
bushing and in said lower wall provided with iron
l. A transformer comprising in combination, a
pair of condensers having inner faces in con
cores in said tube and related to said coils, inner
adjacent faces of said condensers having inter
tinuous relation, said inner faces provided with
inter?tting parts to prevent relative sliding
movements of the condensers and having half
?tting portions holding them against relative
sliding movements.
holes providing a central opening, a bracket ex
tending across said condensers having side arms
5. A transformer assembly comprising in com—
bination, a casing having a bottom wall and side
extending downwardly at the outer sides of the
walls extending upwardly therefrom, a pair of
condensers in back to back relation between up
condensers, a bushing disposed in said central
opening secured to said bracket that is internally 40 per ends of opposite side walls, adjacent inner
sides of the condensers provided with half-holes
threaded, a tube having its upper end in said
forming an axial central opening, a bracket hav
central opening, coils on said tube, a casing hav
ing an upper portion extending across the upper
ing a lower wall and side walls enclosing said
sides of said condensers, and side arms extend
condenser, tube and coils with the said condenser
at the upper ends of said side walls, screws in the 45 ing downwardly therefrom at outer sides of said
condensers, a bushing carried by the upper por
internal threads of the bushing and in the said
tion of the bracket disposed in the upper portion
bottom wall extending into opposite ends of said
of said opening, a central tube having its upper
tube, and iron cores on said screws in said tube.
end in the lower portion of said opening and
2. A transformer comprising in combination, a
pair of condensers having inner faces in con EU extending downwardly from the condensers and
relative to the casing, coils ?xed in spaced rela
tiguous relation, said inner faces provided with
inter?tting parts to prevent relative sliding
tion on said tube, and separate screws threaded
movements of the condensers and having half
in said bushing and in said lower wall provided
holes providing a central opening, a bracket ex
tending across said condensers having side arms
with iron cores in said tube and related to said
tube, iron cores on said screws in said tube, and
means securing said arms of the bracket to the
ing an upper portion extending across the upper
sides of said condensers, and side arms extend
coils, inner portions of the half-holes in the con
extending downwardly at the outer sides of the
densers and the said bushing provided with inter
?tting portions to hold the condensers and bush
condensers, a bushing disposed in said central
ing against relative sliding movements.
opening secured to said bracket that is internally
6. A transformer assembly comprising in com
threaded, a tube having its upper end in said cen
tral opening, coils on said tube, a casing having (50 bination, a casing having a bottom wall and side
a lower wall and side walls enclosing said con
walls extending upwardly therefrom, a pair of
denser, tube and coils with the said condenser
condensers in ‘back to back relation between
at the upper ends of said side walls, screws in the
upper ends of opposite side walls, adjacent inner
internal threads of the bushing and in the said
sides of the condensers provided with half-holes
bottom wall extending into opposite ends of said 65 forming an axial central opening, a bracket hav
walls of the casing,
3. A transformer assembly comprising in com
ing downwardly therefrom at outer sides of said
condensers, a bushing carried by the upper por
bination, a casing having a bottom wall and side 70 tion of the bracket disposed in the upper por
tion of said opening, a central tube having its
condensers in back to back relation between up
upper end in the lower portion of said open
per ends of opposite side walls, adjacent inner
ing and extending downwardly from the con
sides of the condensers provided with half-holes
densers and relative to the casing, coils ?xed
forming an axial central opening, a bracket hav 75 in spaced relation on said tube, and separate
walls extending upwardly therefrom, a pair of
2,400,531
screws threaded in said bushing and in said
lower wall provided with iron cores in said
tube and related to said coils, inner adjacent
faces of the condensers having inter?tting por
tions holding them against relative sliding move
ments, inner portions of °the half-holes in the
condensers and the said bushing provided with
3
inter?tting portions to hold the bushing and con
densers against relative sliding movements, and
means extending through opposite side walls of
the casing engaging the side arms of the bracket
whereby the said bracket, bushing and condensers
are held against movement relative to the casing.
HOWARD J. BENNER.
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