US1443298A - Stylus adapter for phonograph sound boxes - Google Patents

Description

uFan. 23, 1923.

L. A. WEl' L|NGTONv STYLUS ADAPTER PoR FHONOGRAPH SOUND Boxes.

Fl LED MAY 9, 1921 Patented Jan. 23, 1923.

UNITED STATES `PATENT EHC.

LEONARD A. WELLINGTON, OF KEENE, NEW HAMPSHIRE.

STYLUS ADAPTER FOR PHONOGRAPH SOUND BOXES.

Application filed May 9, 1921. Serial No. 467,992.`

To all whom t may concern.'

Be it known that I, LEONARD A. WELLING- TON, a resident of Keene, yin the `county of Cheshire and State of New Hampshire, a

ularly to a stylus adapter or holder, and a` needle therefor.

The playing of records on phonographs has always been accompanied by more or` less foreign noises, due to the` friction of the needle, or other form of stylus, in the grooves, dust in the grooves, cracks, scratches, and even the imperfections of manu-` facture of the records themselves. We may say that there is more or less side friction than is necessary, due to the grooves in the record not being wide enough or not properly fitting the needle or stylus point.

Due to the design and the resultant mode of operatingfphonographs with the so-called horizontal vibrations, and for that matter also the vertical method of reproducing the contents of the record, it is at once apparent that there .is a motion .that is imparted to the diaphragml through the usual needle that `is` necessary to proper reproduction of the said record, and when this motion is increased, its result is more sound, and when decreased, less.

The object of my invention is to eliminate the scratches and other surface noise due to the friction of the needle or stylus in the groove. A further object is to construct an adapter or holder which may be attached to any make `of machine, and one which will receive any form of needle. A further object is tc so construct the stylus adapter or holder in such a manner that there is no metal contact between that part of the holder which is secured to the sound-box and the part which is adapted to receive the stylus proper.`

In the accompanying drawings:

Fig. 1 is a side elevation showing the holder as attached to the sound-box; Fig. 2 is a front or edge `view thereof;

Fig. 3 is a top plan view of the adapter or holder detached;

Fig. 4 is a longitudinal section on line 4-4 of Fig. 3;

'Fig 5 is a sectional yview of a modified form 5 Fig. 6 is a top plan view of a modified form;

Fig. 7 is a sectional view thereof.

The numeral 1 indicates the usual soundbox of a phonograph, and to the lower portion 2 thereof is suitably connected the `usual `fulcrum point or vprojection 3, which is adapted to receive the usual stylus.

In its preferred form, the stylus adapter or holder consists 0f a cup-shaped member or body portion 4, to which is riveted or otherwise secured a post 5 which is adapted to extend upwardly therefrom, andbe received in the usual needle-holder 3. Received in this cup-shaped member 4 is a secondary body portion G, the two members being secured together at either end byy screws 7, 7, and the nuts 8, 8, insulating washers 9, 9, preferably of rubber being interposed between the heads ofthe screws and the member 4.

The numerals 10, 10, indicate insulatedk spacing-washers received upon the screws 7, 7, and vinterposed between the members 4 and 6, this arrangement effecting a non-metallic connection between 'the two members 4 and G. An opening 11 in the upper member Gvreceives the connecting post 5, permitting it to project upwardly from the holder, this member likewise being provided with an insulating washer 12. The numeral 13 indicates a hollow post-like member projecting upwardly from the upper body portion 6, which is adapted to receive the reproducing needle 14 from the under side of the holder, there being an enlarged opening `15r in the lower member to permit the needle 14 to pass therethrough into its supporting` post 13, a thumb-screw 16 securely fastening the needle in place within the post. [This needle is preferably weakened in spots as at 17, for,instance,rby making it somewhat smaller in diameter, thus making the needle somewhat springy to lesseny the vibration.

As shown in the modified view, Fig.4 the parts are practically re\f'ersed,ithe upper i portion 6 of the holder now being the cupshaped member, and provided with the atllO disclosed. insulating washers 10, 10', are .interposed between said members d and 6, as in the preferred construction.

It is obvious that this device may be constructed in more or less different forms, wherein the elements making up the body portion ofthe device are assembled in such a manner as to be insulated from each other, and providing an attaching-post and a needle receiving socket in the respective meinbers l and 6, being completely insulated to one another.

As, for instance, as shown in Figs. 5 and 6, the body portions 18 and 19 are of comparatively rectangular form being provided with an insulated bearing` i9 transversely of the body, and secured together at diagonal cor-v ners tor limited movement by the screws 20, 20, which in turnV are properly insulated 'from said members. ds shown in Fig. 5, the upper member is provided with an elongated projection 2l, which is adapted to receive the post 5, while the lower member' has a similar projecting portion 22, which is provided with the needle socket 13', ythese proyections adapted to he in comparatlvely the same plane, but carried independently by the respective body portions.

l claim:

l. A stylus adapter tor phonograph sound-boxes comprising a main body portion, a secondary body Aportion yieldingly connected together, an insulating medium interposed therebetween, an attaching post secured to one ot said members, and a socket carried by the other member adapted to re-.

ecirc the reproducing needle, said attaching post and socket adapted to lio iliarallel. and extend in the same general direction,

2. A stylus adapter for phonograph soundboxes connnfising a cup-shaped body portion, a secondary body portion adapted to be received in the cup-shaped member, and yieldingly connected together, an insulating medium interposed therebetween, an attaching post secured to one ot said members, and a socket carried by the opposite member adapted to extend through the first mentioned body member to receive a reproducing needle.

3. A stylus adapter :tor phonograph sound-boxes comprising a main body portion and a secondary body portion yieldingly connected together, an insulating mediumv interposed therebetween, an attaching post secured to the main body portion adapted to pass through an opening in the secondary body portion extending upwardly therefrom, and a socket carried by the secondary body portion adapted to receive a. reproducing needle adapted to pass through an opening in the main body por tion and extend downwardly therefrom.

4C. A' stylus adapter for phonograph sound-boxes, comprising a cup-shaped body portion, asecondary body portion received in said cup-shaped member and yieldingly connected together, an insulating' medium interposed tlierebetween, an attaching post secured to the main body portion adapted to pass through an opening in the secondary body portion, and a socket carried by the secondary body portion adapted to receive a reproducing needle adapted to pass through an opening in the main body por-4 tion.

A stylus adapter for phonograph sound-boxes comprising a cup-shaped body portion yand a secondary body portion received in the cup-shaped body portion, se

curingscrews carried by and insulated fromA said cup-shaped body portion adapted to secure the main and secondary body portions together, insulating washers interposed bctween said main and secondary body portions carried by said screws, a securing post carried by one oi said members, and a socket carried by the opposite member adapted to receive the reproducing needle.

(S. il stylus adapter 'for phonograph seront-boxes comprising a cup-shaped body portion and a secondary body portion, securing screws carried by and insulated Afrom said cup-shaped body portion adapted to securevthe main and secondary body portions together, insulating washers interlmsed between said and secondary body portions'and carried by said screws, an attaching post secured to the main body portion adapted topass through an opening in the secondary body portion and projectingv upwardly therefrom, and a socket carried by the secondary body portionadapted to receive a reproducing needle, which in turn is adapted to pass through an opening in the main body portion.

ln testimony whereof I hereunto aiix my signature.

LEONARD A. lVELLTNG'lON.

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