US1796149A - Stylus-bar mounting - Google Patents

Description

March 10, 1931 c D, HAlGlg ET AL 1,796,149

STYLUS BAR MOUNTING Filed June 12 1926 Patented Mar. 10,1931

UNITE-n OFFICE GARLETON D. HAIGIS, OF HADDONFIELI), AND LLOYD Y. SQUIBB, OF CAMDEN, NEW JERSEY, ASSIGNORS T VICTOR TALKING MACHINE COMPANY, A CORPORATION OF NEW JERSEY STYLUS-BAR MOUNTING Application filed June 12,

This invention relates to sound recording and sound reproducing machines. and, more particularly, to means for oscillatably mountingthe stylus barof sound reproducing .or recording instrumentalities.

It is an object of this invention to provide improved means for mounting the stylus bar so that said stylus bar is adapted to oscillate about a transverse axis without lost motion and without undue resistance to oscillation.

Another objectof this invention is to provide novel means for mounting the stylus bar whereby thestylus .bar is free-to oscillate about a transverse axis and yet is rigidly res rained'against any movement at right angles to said axis so that all movement of said stylus bar is a turning about a true fulcrum without lost motion due to transverse vibrationat the fulcrum.

The invention is capable of receiving a variety of mechanical expressions and it is therefore to be expressly understood that the embodiments shown 'on the accompanying drawings are for purposes of illustration only and are not to be construed as a definitionof the limits of the invention, reference being had to the appended claims for that purpose.

Referring in detail to said drawings, wherein thesame reference characters are employed to designate corresponding parts in the several figures,

Fig. 1 is a front'elevational view of a sound box embodying the present invention;

Fig. 2 is an axial section of said sound box;

Fig. 3 is a transverse section on the line 3-3 of Fig.2; 7 r

Fig. 4 is enlarged perspective view of one of thev resilient members; 7 V Fig. 5 is a perspective elevation, on a smaller scale, of a slightly different construction embodying the present invention; and

Fig. 6 is a perspective view, on an intermediate scale, of the stylus bar and its mounting elements detached from the sound box.

1926. Serial No. 115,545.

trated as embodied in a sound .box of the me chanicaltype, but the invention is equally applicable to sound reproducing and recording instrumentalities of the electrical or electromagnetic types. A sound box casing 10 of any suitable size, shape, material and construction, and which may be either a recording or a reproducing sound box, is provided with a diaphragm 11, of any suitable size, shape, material and construction, mounted in said sound box in any suitable way. Operatively connected to said diaphragm 11, as by a spider 12, is a stylus bar 13, 14 of any suitable construction and carrying at its outer end any suitable stylus 15 retained therein in any suitable way, as by a set-screw 1.6. As the elements so far referred to constitute no part of the novelty of the present invention and may be of any suitable character and construction, further detailed description thereof is deemed to be unnecessary.

In conformity with the present invention said stylus bar 13, 14 is oscillatably mounted .on said sound box casing by means of a plurality of flexible members, which preferably extend radially with respect to the axis of oscillation of said bar and ma common plane transversely of said axis, on each side of said stylus bar. Said members are preferably symmetrically disposed around said axis of oscillation and extend from a transverse member on said stylus bar like the spokes of a wheel, being suitably connected to said casing at their outer extremities.

In the form shown, said stylus bar 13, 14 is provided with a. transverse member 17, integral with or attached thereto, which extends at each side thereof in a direction parallel to the general plane of the diaphragm. Each end of said member 17 is connected to a plurality of flexible members 18 which extend radially from said member 17 and which are preferably symmetrically disposed around the axis thereof. Said members 18 may be of any suitable size, construe.

tion and material, being preferably made of flexible material which istpossessed of a substantial degree of resiliency, like soft steel,

although spring material may be employed ifdesired, and'are shown as webs or fiat strips disposed at right angles to each other 7 and connected to each end of said member 17 at the middle of their length. Said flexible members 18 at each endrofthe member 17 preferably extend'radial-ly like spokes in V a common planetransversely of the axis of oscillation, and to this end each of said mem hers is preferably notched mid-way of its length, as shown at 19,5for one-half its depth,-

' may have asliding fit or they may be secured so that a pair of said members may be rigidly .diametrical slotsinwhi chthe members 18,

when inter-engaged as heretofore described,

therein in any suitablewa'y, as by soldering.

' outerends ofthemembers 18 are at- .tached to the sound box casing in any suitableway. Inor'der to facilitate mounting and demfounting the stylus bar the outer tremities'of said members at each side of the stylus bar are preferably attached to an annular member 20'', eaeh member 20 beingillustrated as slotted :atpoints 7 90 .re movedito receive the extremities ofthe memhersl 8yandsaid members being retained in said slots in' any suitable 'way,as by solder. Said annular members 20 may be mounted on the sound box "casing in any suitable way. In the form shown in Figs. 1,2 and 3 ,a r1nglike projection '21 is formed on or suitably attached to the casing; 110 ateach side of the stylus bar, and each member 20 'is'retained in the corresponding ring-like projection 21 in any suitable way, preferably detachably,

bar. v

In th'e fo'rm shown Fig. '5 the front of the casing is provided with a box-like projectionQ 3' having" circularapertures at yea-ch. side thereof in which therings 20, to which the outer extremities of the members '18 are attached, may be suitably mounted and retained. 7 5

v In operation the members 18, owing to their fixed attachment to the sound box casingat their outer extremities and to the stylus bar at the "center of their lengths, provide "a balanced flexible suspension for the stylus bar f whichis rigid at right 'anglestolthe axis of the opposite side of said axis The stylus" which oifers no, undue opposition to its oscillation so that in reproducing, for example, large amplitudes inthe record trace may be followed by the stylus; When the flexible members-are composed of webs with their Width in the direction of axis of oscillation,

all movement of the stylus bar in the direction ofsaid axis is also effectively prevented.

Many oft'he advantages 'ofmy inventionimay be secured however it said; flexible members arel'm'ade'fro-m round or other stock.

While the flexible members have been 7 shown as arranged parallel to and at right angles to thepiane of the diaphragm, this is not essential as the flexible members 18 may be so mounted on the transverse member '17 that when assembled with thesound boxfcasing they are in angular relationship to the plane of the diaphragmg-rfor example allofthe members 18 may be disposed at an an gle of 15. .tothe plane of'the diaphragm. Furthermore, while the:.transverse'inember 17 has been shown as disposed at the center of the rings 20,with all ofthefiexiblemembers 18 projectin equal distancesffrom the: trans-V verse member 17, this isnot essentiah as said member 17 may be disposed. eccentrically 'within the rings 20, the members '18 project ing unequal distances member 17. r i

It will therefore be perceived'that-a novel mounting for a stylus bar has been provided which is relatively simple. and inexpensive in construction, which employs .110 rubbing surfaces to wear,andiwhich obviates lost motion at oppositesidesof said without undue opposition to oscillation.

This mounting also possesses the advantage its;own 'because of the relation of the flexible members to v the axis of oscillation. The members 20 are preferably so mou'ntedron the casing that the flexiblemembersl8exert no in tial stress on the 'diaphragm, but if desired. said members 20 maybe rotatably adjusted in the r supports, and retained in adjusted position in any suitable manner as by friction,

soldering, set screws, etc, to set up a desired initial stress in the diaphragm.

vVhile the embodiments of the invention illustrated on the drawings have been described with considerable particularity, it is to be expressly un lerstood that the invention is not restricted thereto, as the same is capable of receiving a variety of mechanical expressionspsome of which will now readily suggest themselves to those skilled in the art, while changes maybe made in the'details of construction, arrangementand proportion of parts, andcertain features used Without p i v thatit has no natural period of vibration of i as by'means of a set s'crewf22, to facilitate. I the mounting anddemounting of the :stylus' other features, without departing from the spirit of this invention; While the invention has been shown and'described as embodied in a sound reproducing or recording instrumentality employinga diaphragm it is to be expressly understood that the invention is not restricted thereto as theinvention is of equal applicability to'sound reproducing or recordinginstrumentalities wherein, for example, the diaphragm is replaced by the vibratory element of electr'o-magnetic devices used in the electrical reproduction of records.

I stjrumentalities, in combination with a cas- Y rality of flexible members operatively united ing, a stylus bar, and means for oscillatably mounting said stylus bar including a pluwith said stylus bar and casing and extending radially of the axis of oscillation between thestylus bar and casing and disposed in a common planetransverse to said axis.

' .2. In sound reproducing and recording instrumentalities, in combination with a casing a stylus bar, and means for oscillatably mounting said stylus bar including a plurality of flexible-'members operatively united with said stylusbar and casing at each side of said stylus bar the flexible members at each side of said stylusbar extending radially of the axis of oscillation of said stylus bar between the stylus bar and casing and disposed in a common plane.

3. In sound reproducing and recording instrumentalities, in combination with a casmg, a stylus bar, and means for oscillatably mounting saidstylus bar including a plurality of angularly-related flexible memity of angularly-related flexible members disposed in a common plane transverse to the axis of oscillation of and at each side of the stylus bar and connected to said stylus bar and casing and adapted to transmit tension "ity of flexible members extending transversely of the axis of oscillation of said stylus bar and connected to said casing at their ends and to said stylus bar intermediat'ewtheir length.

' 6. In sound reproducing and/recording instrumentalities,'in combination with 2. casing, a stylus bar, and means for oscillatably mounting said stylus bar including a plural.- ity of flexible members extending transversely of the axis of oscillationof and at each side of said stylus bar connectedthereto intermediate their lengths and connected to. said casing at their extremities.

a 7 In sound reproducing and recording instrumentalities, in combination with a casing, a stylus bar, and means for 'oscillatably mounting said stylus bar including a plurality of flexible members connected to said casing at their ends and to said stylus bar intermediate their length, said flexible members being disposed in a common plane transverse tothe axis of oscillation of said stylus bar. 8. In sound reproducing and. recording instrumentalities, in combination with a casing, a stylus bar, and means for .oscillatably mounting said stylus bar including a plurality of flexible members at each side of said stylus bar connected thereto intermediate their length and connected to said casing at their extremities, the flexible members at each side of said stylus bar extending in a common plane transverse tothe axis of oscillation of said stylus bar.

' 9. In sound reproducing and recording instrumentalities, in combination with a casing, a stylus bar, and means for oscillatably mounting said stylus bar including a lurality of separately .formed and individually mounted flexible members symmetrically arranged around the axis of oscillation of said stylus bar and extending in a common plane from said stylus bar to said casing.

10. In sound reproducing and recording instrumentalities, in combination with a casing, astylus bar, and means for oscillatably mounting said stylus bar includin a plurality of flexible members symmetricaIly arranged'With-respect tothe axis of oscillation of said stylus bar and operatively united with said stylus bar and easing at each side of said stylus bar, the flexible members at each side of said stylus bar extending in a common plane.

11. In sound reproducing and recording instrumentalities, in combination with a'casing, a stylus bar, and means for oscillatably mounting said stylus bar including a member extending transversely of said stylus bar and a plurality of angularly-related, separately formed and individually mounted flexible members extending in a common radial plane angularly related to the axis of oscillation of said bar from each end of said transverse member to said casing.

12. In sound reproducing and recording instrumentalities,'in combination with a casing, a stylus bar, and means for oscillatably mounting stylus. bar. including a member extending transversely of said stylus, bar

gto'defineits axis of oscillation-and symmetrically arranged; separatelyjformed ind v dually: mounted flexible members extend ng in a common plane angularly related; to the axis ofnscillationfrom each {end of said trans -.lverse member to saidfc'asing V V I, 13. In-sound'reproducing :andvrecording' FinStrumentaIities, in combination with a cas- I ing, a stylus bar, and means forosclllatably mounting said stylusbar including .a me ber extending transversely of saidstylusbar and a" plurality of radially-extendlng ,flexi- 4 -ble members operatively connected to each end of said transverse member, intermediate their length: and connected to said casing at theiriends. ii 14. 1111 sound reproducing and record ng instrumentalities, in combination with: a casling-.astylus bamand means for oscillatably *tiesto said casing; so

mounting saidstylus bar including amember extending transversely of said stylus bar 7 and a phirality'rofllexible Webs connected to vsaid member intermediate their length and extending from each end thereof in; a, "common plane transverse lZOHSaIjCl member,

said webs being connected at their extremi- 5 -lnsound reproducingiand recording instrumentalities, in combination wlth it casing,

[a Stylus bar, vandhtueans for oscillatably I mountingsaidstylusbar including-a memher extending transversely of said stylus-bar and'four fiexible'webs disposed at right angles to each other and extending from; each end of said transverse t0'1Sflidg- 1 "16'. In sound reproducing and recording instrumentalities', in. combination -w1th a casing, a stylus bar, and means foroscillatably mounting said stylus bar including a member extending transversely (of said stylus bar a plurality ofangul'arlyrrelated flexible spokes connected to said member at each end thereof,

annular members to which. the ends of said spokes are attached, and means 1 for mounting said annular members onsaid casing. V

' '17; In sound reproducing and recording instrumentalities, in combination ;'with a casing, Eastyl-us bar, and means for oscillatably' mounting said stylus bar including a member extending transversely of said stylus bar, a plurality of symmetrically arranged flexible spokes extending from each end of said memher, ringssto which the extremities of said spokes are attached, means for mounting said rings on said ca'sing.

18;:In sound reproducnig and recording instrumentalities, inv combination with a casing, a'sstylus banand means for oscillatably l"rnounting said stylus bar inclu-dinga member extending transversely of said stylus bar, a plurality of flexible webs connected-to eachend- 'oii'rsaid member .intermediate their jlen.gths',=rings to whichithe extremities of said member, I

websare attached, and means tor -mounting said rings on said'casing.

19. In sound reproduc ng and recording "instrumentalities, in combination with a casing, a stylus bar, andmeansfor oscillatably mounting said stylus bar including a member extending transversely of said stylus bar, a

plurality ol flexible webs connected to each" end 10f said nember gintermediate their lengths, annular members to wh ch the extremitiesci sa d Webs'areattachedj, and means I for deta'chably'and,adjustably mounting said annularmembersonsaid casing;

-- 20.111 sound rebroduriingand recording casing, a .stylusbar and means'foroscillatably mounting said stylusbar including a member extending transversely of said stylus bar, a

plurality of symmetrically arranged resilient members connected to each end of said trans verse member, annularmembers to which the of said members are attached, and means or m i Saidannular m b Unsaid casing-g 1 I s '22- I11 sound. reproducing and recording instrumentalities, in combination with a cas- ,ing a stylusbar, and means for oscillatably mounting I said stylus bar "including v a plurality ofradial web-like members operatively united with saidstylus bar and casing at each side of said stylusbanisaid web-like me nbers being adapted to bend to provide oscillation of said stylus bar on its axis but to resist all movement transversely and longitudinally or said axis by reason of the stiffness of said web-like niembersu t 23. In sound reproducing} and recording instrumentalities, in combinati-on with a casing, a stylus bar, and means for oscillatably mounting said stylus bar including a member extending transversely of said stylus bar, and a plurality of 'angularly related flexible membersat eachendof said transverse member extending radially from said transverse member to said casing and fixed thereto, said flem'bl'e members being disposed on opposite sides of said transverse member to'oppose movement thereof in all directionstransverse- 1y oi the axis of oscillation. i

24. In sound reproducing and recording instrumentalities, in combination with a casing, a stylus bar, and means for oscillatably mounting said stylus bar including a member extending transversely of said bar and means mounting said member on said casing for oscillation about its own axis, said last named means comprising a plurality of in- I tersecting spokes at each end of said memher extending in a common plane transverse to said member and secured to the latter at their point of intersection, the extremities of saidspokes being operatively connected to said casing. a

In testimony whereof We have signed this specification.

- CARLETON D. HAIGIS.

LLOYD Y. SQUIBB.

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