US2108399A

US2108399A - Mounting device for tubular articles

Info

Publication number: US2108399A
Application number: US133323A
Authority: US
Inventors: Allen William Russell
Original assignee: American Bosch Arma Corp
Current assignee: Ambac International Corp
Priority date: 1937-03-27
Filing date: 1937-03-27
Publication date: 1938-02-15
Anticipated expiration: 1955-02-15

Description

Feb. 15, 1938. w. R. ALLEN, 3D 2,108,399

MOUNTING DEVICE FOR TUBULAR ARTICLES Filed March 27, 1937 INVENTOR. I'V/ZZM/ ffflddfll Alli/V E ATTORNEY.

Patented Feb. 15, 1938 UNITED STATES PATENT OFFICE MOUNTING DEVICE FOR TUBULAR ARTICLES Application March 27,

3 Claims.

This invention relates to means for mounting tubular articles and more particularly to a device for securing radio coil forms and their associated 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 constructed. The radio chassis was punched to receive the numerous mounting posts and an individual operation was required to thread a fastening nut on each post and so secure the respective 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 one mounting operation to secure both a coil and its shield can to a chassis.

One of the objects of this invention is to pro vide improved means for mounting tubular articles which shall be more efiicient in operation and convenient in installation.

Another object is to provide a mounting member which is more simple in construction.

A further object is to provide a mounting member which may be more economically produced.

Still a further object is to provide a mounting member for radio coils and shield cans which requires but a single attaching operation to secure both articles.

Other objects and advantages will in part be specifically stated and in part be obvious when the following specification 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 mounting 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 central collar 3, provided with internal threads 4. The device may be formed in a single stamping operation and may have the threads 4 subsequently cut, or if the metal is relatively soft, a self-tapping screw may be employed in cooperation with the device to form the threads.

In Fig. 2 there is shown a conventional tubular 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 flange 6 formed thereon by crimping or otherwise. The mounting device I is inserted in the open end of the coil form 5 with the pins 2 pro- 1937, Serial No. 133,323

jecting downwardly and is pushed through the form until the pins contact the flange 6. Continued pressure on a suitable inserting tool (not shown) causes the pins 2 to pierce the coil form 5 at the intersection of the flange 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 he mounting device to draw it down securely. The pins 2 cut into the chassis material sufliciently 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 web suitably apertured, and both elements may be secured to the chassis 1 in the manner above described. The mounting thus provided is economical in cost, and reduces the assembly labor as well as obviating the cost of providing a plurality of fastening members as in the former practice, to achieve the same object.

It will be apparent that many changes and modifications may be made by anyone skilled in the art without departing from the spirit and scope of the invention as expressed in the following claims.

1. In combination, a tubular article having an inwardly extending flange 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 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 flange 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 flange and radially deform against said support, and means for urging together said element and said support.

3. In combination, a tubular radio coil form having an inwardly extending flange formed at one end, a support, a mounting element within said form having a central opening therein, a 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.