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Патент USA US2108399

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Feb. '15, 1938.
w. R. ALLEN, 3D
- 2,108,399
MOUNTING DEVICE FOR TUBULAR ARTICLES
Filed March 27, 1937
INVENTOR.
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ATTORNEY.
2,108,399
Patented Feb. 15, 1938
UNITED STATES PATENT. OFFICE
2,108,399
MOUNTING DEVICE FOR TUBULAR
ARTICLES
William Russell Allen, III, Spring?eld, Mass, as
signor to United American Bosch Corporation,
Spring?eld, Mass, a corporation of New York
Application March 27, 1937, Serial No. 133,323
3 Claims. (Cl. 250-16)
This invention relates to means for mounting jecting downwardly and is pushed through the
tubular articles and more particularly to a de
vice for securing radio coil forms and their asso
ciated shield cans to a chassis.
In the past it has been customary to provide
coil forms with longitudinally extending threaded
posts which were riveted to the end of the coil
form, and the shield cans were similarly con
structed. The radio chassis was punched to re
ceive the numerous mounting posts and an indi
10 vidual operation was required to thread a fas
tening nut on each post and so secure the re
spective articles to the chassis. The invention to
be described herein discloses a simple fastening
device for such purposes which adapts itself to
mass production methods, and which requires but
form until the pins contact the ?ange 6.
Con
tinued pressure on a suitable inserting tool (not
shown) causes the pins 2 to pierce the coil form 5
at the intersection of the ?ange 6 and the pins
are bent outwardly against the resistance of the
radio chassis ‘I (Fig. 3). A screw 3 is inserted
through an opening in the chassis 2' and engages
the collar 3 of the mounting device to draw it
down securely. The pins 2 cut into the chassis
material su?iciently to resist any subsequent
turning of the coil form.
As shown in Fig. 3, the coil form 5 may ‘be
placed in a shield can 9 having a bottom wall or
one mounting operation to secure both a coil and
web suitably apertured, and both elements may
be secured to the chassis 1 in the manner above
described. The mounting thus provided is eco
its shield can to a chassis.
nomical in cost, and reduces the assembly labor
>
One of the objects of this invention is to pro
vide improved means for mounting tubular ar
20 ticles which shall be more e?‘icient in operation
and convenient in installation.
Another object is to provide a mounting mem
ber which is more simple in construction.
A further object is to provide a mounting mem
25 ber which may be more economically produced.
Still a further object is to provide a mounting
member for radio coils and shield cans which re
quires but a single attaching operation to secure
both articles.
Other objects and advantages will in part be
speci?cally stated and in part be obvious when
the following speci?cation is read in connection
with the drawing, in which:
Fig. l is a perspective view of the improved
~ device; Fig. 2 is a view showing the device as
applied to a radio coil; and Fig. 3 is a view show—
ing a shield can and coil partially broken away
to illustrate the mode of operation of the mount
ing device.
Referring in more detail to Fig. 1, there is
shown a circular body I of sheet metal having
integral depending pins 2 and a struck up cen
tral collar 3, provided with internal threads 4.
The device may be formed in a single stamping
operation and may have the threads 4 subse
quently cut, or if the metal is relatively soft, a
self-tapping screw may be employed in cooper
ation with the device to form the threads.
In Fig. 2 there is shown a conventional tubular
5 O radio coil form 5 having windings thereon.
The
coil form 5 may be of any suitable insulating
material such as waxed paper, and has an end
?ange 6 formed thereon by crimping or other
wise. The mounting device I is inserted in the
55 open end of the coil form 5 with the pins 2 pro
as well as obviating the cost of providing a plu
rality of fastening members as in the former
practice, to achieve the same object.
,
20
It will be apparent that many changes and
modi?cations may be made by anyone skilled in
the art without departing from the spirit and
scope of the invention as expressed in the follow
25
ing claims.
1. In combination, a tubular article having an
inwardly extending ?ange formed at one end, a
support, a mounting element within said article,
a plurality of deformable pins on said element 30
adapted to pierce said article and deform against
said support, and means for urging together said
element and said support.
2. In combination, a tubular article having an
inwardly extending ?ange formed at one end, a
support, a mounting element within said article,
a plurality of deformable pins on said element
adapted to pierce said article adjacent the base
of said ?ange and radially deform against said
support, and means for urging together said ele 40
ment and said support.
3. In combination, a tubular radio coil form
having an inwardly extending ?ange formed at
one end, a support, a mounting element within
said form having a central opening therein, a 45
plurality of deformable pins on said element, a
shield can enclosing said coil form and having a
bottom portion extending under said form, and a
screw extending through said support and said
bottom portion of said shield can and engaging
said mounting element at the central opening
thereof, whereby said pins may be caused to
pierce said coil form and deform radially.
WILLIAM RUSSELL ALLEN, III.
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