US2154537A

US2154537A - Spring holding clip for use in radios and other devices

Info

Publication number: US2154537A
Application number: US185718A
Authority: US
Inventors: Stenberg Knut E Birger
Original assignee: ASSOCIATED ATTLEBORO MANUFACTU
Current assignee: ASSOCIATED ATTLEBORO MANUFACTU; ASSOCIATED ATTLEBORO MANUFACTURERS Inc
Priority date: 1938-01-19
Filing date: 1938-01-19
Publication date: 1939-04-18
Anticipated expiration: 1956-04-18

Description

p 18, 1939- K. E. B. STENBERG 2,

SPRING HOLDLNG CLIP EOR USE IN RADIOS AND OTHER DEVICES Filed Jan. 19, 1958 ,Zirrar; 07'

Patented Apr. 18, 1939 UNITED STATES PATENT OFFICE AND OTHER- DEVICES Knut E. Birger Stenberg, Attleboro, Mass, as-

signor to Associated Attleboro Manufacturers,

Inc., Attleboro, Mass.

chusetts a corporation of Massa- Application January 19, 1938,-Serial No. 185,718

4 Claims.

My invention relates to spring holding clips for use in radios or other deviceshaving rotatable rods for dial turning, tuning or other purposes to attach suitable turning knobs to the ends of such rods.

An object of my invention is to provide a novel type of turning clip which may be readily and cheaply stamped out in quantity for frictionally securing such a knob to such a rod without the necessity of separate screws or means thought necessary in former types of attaching devices.

These and such other objects of my invention as may hereinafter appear will be best understood from a description of the accompanying drawing which illustrates an embodiment thereof in use in attaching a turning knob to the end of a turning rod of a radio cabinet.

In the drawing,

Fig. 1 is a front elevation of a radio cabinet having the knobs of the turning rods attached thereto through the medium of my invention.

Fig. 2 is a vertical sectional View taken along the line 2-2 of Fig. 1.

Fig. 3 is a vertical sectional view showing my improved spring clip in the position it assumes prior to having its bowed portion flattened by the turning rod as shown in Fig. 2 in attaching said knob to said rod.

Fig. 4 is a rear elevational view of the clip in position on the knob as shown in Fig. 3.

Fig. 5 is a rear elevational view of the turning knob shown in Fig. 4 with my spring holding clip removed.

Fig. 6 is a perspective view of my improved spring holding clip.

In the drawing, wherein like characters of reference generally indicate like parts throughout, it] generally indicates a spring holding clip constructed in accordance with my invention. Said clip may be conveniently constructed by bending it of flat sheet metal in one or more punching, stamping or metal shaping or cutting operations. Said clip comprises a bowed longitudinally extending portion 12 and a portion I4 projecting radially outwardly from an end thereof having an integral lug [6 of substantial width projecting longitudinally in the same direction as said bowed portion from a portion thereof preferably substantially the center portion thereof in my preferred embodiment. Said lug l6 preferably comprises a flat portion of substantial width in the same general direction as said bowed portion l2 and being struck-up from the center portion 20 of said radially extending portion, leaving the cut out portion 22 therein.

To provide substantial resilient width to said lug, said lug preferably terminates in an end 24v bent substantially at right angles thereto in my preferred embodiment towards said longitudinally extending portion l2.

As stated, my improved spring holding clip is particularly adapted for use in radios or other V7. devices having rotatable rods for setting dials,

with a flat portion 34 at the outer end thereof for the'atta'chment-of the knob 36 thereto. The knob 36 is of generally solid cylindrical shape and may be provided with a knurled turning portion 3B'at the outer end thereof.

In mypreferred embodiment, for a purpose 'to be described and to permit the inner end of the knob 36 to rest in close proximity to the wall of the radio cabinet, said inner end is preferably provided with a central inset portion 40 generally of cylindrical shape and thus providing a wall 42 projecting axially inwardly from said knob externally of said inset portion. Said knob 'isprovided with a central axial hole 44 extending from the inner end thereof and thus where the inset center portion 40 is employed from the outer end thereof. The outer end of said rod 32 may be round and provided with an axially extending segmental cut out portion forming the flat portion 34. In this instance, the'axial hole 44 is also round. It is obvious however that both the end of the rod 32 and the axial 'hole 44 may be of any desired shape so long as sumcient clearance is provided to receive the longitudinally extending portion I2 of my improved clip H], to compress the bow 46 thereof from" the curved position shown in Fig. 3 to the more flattened shape shown in Fig. 2 which bow thereafter tends toexpand to its original position to urge the end of said rod against the opposite wall of said axial hole 44 to resiliently retain said knob 36 to the end of said rod 32. Said knob 36 is also provided with a hole 48 extending axially fromthe inner end of said knob and, if a central inset portion 40 be employed from the outer end thereof, located radially of said central hole 44, which hole 48, while preferably cylindrical, may also be of any desired shape.

The axially or longitudinally extending lug l6 of my improved spring clip is spaced from the axially or longitudinally expanding bowed portion l2 a sufiicient distance to project within said hole 48. The inner end of said lug I6 is preferably of a compressible size to be resiliently retained within said radial hole 48 and as stated, for this purpose the inner end thereof terminates in the flat portion 24 bent substantially at right angles thereto.

If a central inset portion 40 be provided, the outer end 50 of said radially projecting portion l4 may also resiliently abut the axially extending wall 42 of said knob exterior of said out out portion. As resilient metal is employed the portion of my improved spring holding clip 52 connecting the longitudinally bowed portion l2 and radially extending portion 14 is inherently some- 7 what curved and for this purpose if desired, as

in the embodiment shown, the central inset knob portion may be provided with a supplemental central inset portion 54 therein to accommodate said curve, and said central inset portion 40 may also be provided with a radially extending inset channel 55 to receive therein the radially outwardly projecting portion 14 of my improved spring clip.

If desired, to more evenly abut the flat end of the longitudinally extending portion of my spring clip In, the axial hole 44 may be provided with a flat portion 58 aligned with the radially extending channel 56 therein.

It is thus obvious that in use, it is merely necessary to align the axially extending portion 12 of my improved clip with the axial central plug hole 44 and the lug I 6 with said radially spaced axial plug hole 48 and by simple axial pressure exerted on the radial portion ll of said clip insert the longitudinally extending bowed portion l2 thereof within said axial hole 44 and compress said lug portion l6 within said axial hole 48. As the inturned end 24 of said lug portion I6 is inserted axially inwardly of the radial knob hole 48, the end 24 thereof bent substantially at right angles thereto, in the embodiment shown slightly more than right angles, will project substantially diametrically across said hole 48 and abut a wall of said radial knob hole to force the opposite longitudinally extending portion l8 thereof against the opposite portion of the wall of said radial plug hole to resilient confine said knob 36 within said radial plug hole 48 to retain said clip Hi to said knob 38.

The knobs may be made up and sold as units with the spring clips attached as shown in Figs. 3 and 4. When it is desired to attach or detach the knob 36 to the end of the rod 32, it is obvious that it is merely necessary to align the bowed portion l2 of said spring clip with the flat portion 34 on the end of the rod and push the knob inwardly. When thus inserted the bowed portion will become flattened from the position shown in Fig. 3 to the position shown in Fig. 2, by the flat end 68 thereof abutting the fiat portion 58 of said hole 44 to urge said rod 32 against the opposite wall of the hole 44 to resiliently secure the knob 36 to the end of the rod 32. It is thus obvious that when the portion I2 of the spring clip I8 is inserted within the axial hole 44 that it will provide a resiliently expansible and contractible socket with said hole 44 for resiliently retaining the knob 36 to the end of said turning rod 32.

It is apparent that I provide a novel type of spring holding clip particularly adapted for use in holding knobs to rod ends with the advantages explained above.

As shown in Fig. 2, the end 24 of the lug H5 in attached position is preferably at slightly less than a right angle to the longitudinally extending portion l8 to cause said end to bite into the opposite side of the wall at an acute angle. It is thus obvious that it will be substantially impossible to pull the lug l6 out of its hole 48 for the more pressure exerted thereon for this purpose the more will said pressure cause said end 24 to bite into the wall of the hole 48 and lock said lug therein.

It is understood that my invention is not limited to the specific embodiment shown and that various deviations may be made therefrom without departing from the spirit and scope of the appended claims.

What I claim is:

1. A spring holding clip for use in radios or other devices having a rotatable rod having a flat portion at the outer end thereof, and a knob member having a knurled turning portion at the outer end thereof, a central axial hole therein extending from the inner end thereof having a wall and a hole extending axially from the inner end thereof located radially of said central hole, a fiat metal spring clip comprising a radially inwardly bowed portion adapted to extend axially of the fiat portion of said turning rod to have the fiat end thereof abut the surface of said axial hole to press the extended side wall thereof against said rod to confine said rod against the opposite wall of the central axial rod hole and a portion projecting integrally radially outwardly from the inner end thereof having an integral lug pro jecting axially inwardly from a portion thereof adapted to project axially inwardly within the radial knob hole of a width to engage the walls thereof to retain said spring clip to said knob and said knob to said rod. 1

2. A flat metal spring clip for use in attaching knobs to rotatable radio rods, comprising an outwardly bowed longitudinally extending portion and a portion projecting radially outwardly from an end thereof having an integral lug of sub-' stantial width projecting longitudinally in the same direction as said bowed portion from a portion thereof.

3. A spring holding clip for use in radios or other devices having a rotatable rod having a flat 4 portion at the outer end thereof, and a knob member having a knurled turning portion at the outer end thereof, a central axial hole therein extending from the inner end thereof having a wall and a hole extending axially from the inner endthereof located radially of said central hole, a fiat metal spring clip comprising a radially inwardly bowed portion adapted to extend axially of the flat portion of said turning rod to have the flat end thereof abut the surface of said axial hole to press the extended side wall thereof against said rod to confine said rod against the opposite wall of the central axial rod hole and a portion projecting integrally radially outwardly from the inner end thereof having an integral lug projecting axially inwardly from a portion thereof adapted to project axially inwardly within the radial knob hole terminating in an and bent at slightly less than right angles thereto,

projecting diametrically across said hole and abutting a wall of said radial knob hole at an acute angle to positively lock the axially extending portion of said lug against the opposite wall of said plug hole against axial outward movement thereof to retain said clip to said knob and said knob to said rod.

4. A flat metal spring clip for use in attaching knobs to rotatable radio rods, comprising an outwardly bowed longitudinally extending portion and a portion projecting radially outwardly from an end thereof having an integral lug projecting longitudinally in the same direction as said bowed portion from a portion thereof terminating in an end bent at slightly less than right angles thereto.

KNUT E. BIRGER STENBERG.