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Патент USA US2406961

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Sept. 3, 1946.
2,406,961
A. v. NICHOL '
DEVICE FOR USE WITH HELICALLY-WOUND COILS
Filed July 15, 1943
JWVW.
2,406,961
Patented Sept. 3, 1946
UNITED STATES PATENT OFFICE
2,406,961
DEVICE FOR USE WITH HELICALLY-WOUND
COIL S
Arthur V. Nichol, Elkins Park, Pa., assignor .to
.Philco Radio and Television Corporation, Phila
delphia, Pa., acorporation of Delaware
Application July 15, 1943, Serial No. 494,856
4 Claims. (01. 175-—-359)
1
2
rI_‘his invention relatesto a novel device for use
with helically-wound coils such as those com
‘In Fig. 2, there is shown a coil structure com
prising a helically-wound coil 5 and a coil-sup
porting form or support 6. The support 6, which
may be tubular or cylindrical in form, is prefer
ably pre-grooved to receive and hold in pre
determined alignment the several turns of the
coil, as shown in Fig. 4. The comb structure I,
monly employed in radio apparatus and the like.
:One object of the invention is to provide a
simple inexpensive device adapted for use with
such a coil, especially in instances where tap
connections are utilized in conjunction with the
coil. The device serves to preserve the spacing
between the coil turns and also serves to sup
provided by this invention, extends longitudinally
of the coil with its teeth inserted between the
port the tap connections and to insulate them 10 coil turns in abutment with the coil-supporting
form, and with its recesses accommodating the
from one another.
coil turns. In order to secure the device I to the
Another object of the invention is to provide
coil structure, there may be provided apertures
a device comprising an insulating member
‘i in the end portions of the device to accom
adapted to extend longitudinally of a coil and
having spaced recesses to receive the successive 15 modate securing elements, such as shown at 8.
Device I is also provided with apertures or pas
turns of the coil, and also having apertures 0r
sages 9- extending from predetermined ones of
passages extending from predetermined ones of
the recesses to the opposite side of the device
and adapted to accommodate tap connections,
tions.
A further object of the invention is to provide 20 such as shown at IE! in Figs. 2 to 4. The end por
said recesses to accommodate the tap connec
tion of each tap connection is bent as shown in
Fig. 3 and extends transversely through va por
tion of recess 4 in engagement with the coil con
ductor 5. The depth of recess 4 is such that the
a device of this character in the form of a simple
comb structure.
Another object of the invention is to provide
a novel tap-securing device in conjunction with
25 bent end of the tap connection is ?rmly between
a helically-wound coil structure.
the coil conductor and the end wall of the re
Other objects and features of the invention
cess, as shown in Fig. 4. This arrangement pro
will appear hereinafter.
vides a very secure mechanical attachment of the
In the accompanying drawing:
tap connection to the coil.
Fig. 1 is an elevationa1 view of the device pro
Electrical connec
vided by the invention, with the central portion 30 tion between these elements is effected at the
extreme end of the tap connection externally of
broken away to permit illustration on a desired
device I by depositing small quantities of solder
scale;
II on the said elements. Thus, the device not
Fig. 2 is a similar elevational view showing the
only serves to preserve the spacing between the
device applied to a coil structure;
Fig. 3 is a detail sectional view taken along 35 coil turns but it also locates and securely sup
line 3--3 of Fig. 2; and
Fig. 4 is a sectional view taken along line 4-4
of Fig. 3.
Referring more particularly to the several views
of the drawing, the device provided by this in 40
vention comprises a member I formed of insulat
ing material, such as Bakelite, and constructed
so as to cooperate with a helically-wound coil
structure in the manner shown in Fig. 2, as will
ports the tap connections and insulates them
from one another, and it permits the use of a
very simple electrical joint between the tap con
nections and the coil.
In using the device I in conjunction with a
particular coil, the tap connections are threaded
through the apertures 9, prior to the assembly
of the device on the coil, and the ends of the
connections are then bent as shown and are posi
be presently described. To this end,v the member 45 tioned in recesses 4. The device is then assem
bled on the coil with the bent ends of the tap
I has end portions 2 adapted to be secured
connections ?rmly held, as above described.
to the end portions of a coil support, and spaced
Small quantities of solder are then applied to the
teeth 3 and recesses 4 adapted to cooperate with
exposed ends of the tap connections and the ad
the successive turns of the coil with which the
device is associated. The teeth and recesses, 50 jacent surfaces of the coil conductors.
which extend along
illustrated, are so
that the teeth will
of the coil and the
turns.
one side of the member I, as
arranged and dimensioned
?t between successive turns
recesses will receive the coil
The device of the invention is particularly use
ful in instances where the coil structure is sub
jected to vibration tending to dislodge the coil
turns and the tap elements. For example, the
55 invention is highly desirable in connection with
3
2,406,961
4
radio apparatus employed on moving vehicles
and the like.
It will be understood, of course, that the width
2. In combination with a helically-wound coil
structure, an insulating member extending 1on
gitudinally of said coil structure externally of
of the teeth and the width and depth of the re
cesses will vary according to the structural char
acteristics of the particular coil with which the
device is to be used. With regard to the over-all
dimensions of the device, the length will be de
the same and secured thereto, said member hav
ing spaced recesses receiving the successive turns
of the coil, said member also having a plurality of
apertures or passages extending from predeter
mined ones of said recesses, tap connections ex
termined by the axial length of the particular
tending through said apertures and having their
coil structure with which the device is to be used,
while the other dimensions will be such as to per
mit the intended functioning of the device and
at the same time give it sui?cient strength. In
one physical embodiment, which may be taken as
an example, the device had an over-all length
ends bent and securely held in said recesses in
?rm engagement with the coil turns, the said ends
of the tap connections extending externally of said
recesses, and means forming an electrical joint
between the extending end of each tap connec
tion and the associated coil turn.
3. In combination with a helically-wound coil
structure, a tap-securing member attached to
said structure externally of the same and having
of 5%; inches, a thickness of Tag of an inch and a
width of % of an inch. The teeth were .035 inch
wide, while the recesses were .056 inch wide and
.1 inch deep.
a recess receiving a coil turn, said member also
Although a single device is shown in associa 20 having an aperture or passage extending from
tion with the coil structure in Fig. 2, a plurality
said recess, a tap connection extending through
of such devices may be used in conjunction with
said aperture and having its end bent and secure
the same coil and may be spaced about the pe
ly held in said recess in ?rm engagement with
ripheral surface of the coil.
said coil turn, the said end of said connection
It will be understood, of course, that the in
extending externally of said recess, and means
vention is not limited to the particular structural
forming an electrical joint between the extend
embodiment disclosed but is capable of modi?ca
ing end of said tap connection and the associ
tion Within the scope of the appended claims.
ated coil turn.
I claim:
4. In combination with a helically-wound coil
1. In combination with a helically-wound coil
structure, an insulating member extending lon
structure, an insulating member extending lon
gitudinally of said coil structure externally of the
same and secured thereto, said member having
spaced recesses receiving the successive turns of
the coil, said member also having at least one
aperture or passage extending from a predeter
mined one of said recesses, a tap connection ex
tending through said aperture and having its end
bent and securely held in said one recess in firm
gitudinally of said coil structure externally of the
same and secured thereto, said member having
35
spaced recesses receiving the successive turns of
the coil, said member also having at least one
aperture or passage extending from a predeter
mined one of said recesses, and a tap connection
extending through said aperture and having its
end bent and securely held in said one recess in
?rm engagement with the coil turn therein, the
engagement with the coil turn therein, the said 40 said end of said tap connection being electrical
end of said tap connection extending externally
ly joined to the associated coil turn.
of said recess, and means forming an electrical
joint between the extending end of said tap con
nection and the associated coil turn.
ARTHUR V. NICHOL.
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