US1557640A - Electromechanical transforming device - Google Patents

Description

H. M. WILLIAMSON ELECT/ROMECHANICAL TRANSFQRMING DEVICE IN VEN TOR.

Patented Oct. 20, 1925.

UNITED STATES HENRY KERLE WILLIAMSON, OF OAK PARK, ILLINOIS.

ELECTROEEGHANICAL TBANSFOBMING DEVICE.

Application filed July 22, 1925. Serial m. 45,432. i

To all whom it may concern.

Be it known that I, HENRY MERLE WIL- LIAMSON, a citizen of the United States, re-

siding at 312 Washington Bvd., Oak Park, county of Cook,Stateof- Illinois, have invented a new and useful Improvement in an Electromechanical Transforming Device, of which the following is a specification with the appended claims.

This invention relates to electro-mechanical transforming devices such as are used for transforming electrical energy into mechanical and sound energy, being particularly suitable for telephonic receiving apparatus and radio loudspeaking devices.

The prime object of this invention is to produce a device that will give the highest efliciency in volume and quality of articulation and music, where a minimum amount of distortion is desired.

Another object of this invention is toneutralize mechanical and electrical periodicities such as exist in the common type of telephonic apparatus.

Another object of this invention is to provide for an electrical receiver with margin of clearance in its structure between stationary and moveable parts to eliminate adjustments.

Other objects will be apparent from the following description:

Fig. 1 shows non-magnetic spacers; Fig. 2 shows an armature and a torsional spring for mounting the armatures; Fig. 3 shows per spective of armature assembly; Fig. 4 shows perspective of the double armature and diaphragm assembly; Fig. 5 shows a schematic drawing of the a paratus; Fig. 6 shows one of the two pole pleces with their extensions; and Fig. 7 shows an end view of the assembled parts.

The parts 1 and 1 shown at Fig. 1 are made up of brass or some other non-magnetic material and are laced on each side of the pole pieces 9 an 10 Figs. 5 and 7. Projectlons 16 fit into and are riveted fast to the pole pieces. A detail of the holes is shown in the pole piece Fig. 6 at 18. Projections 15 are for receiving torsional sprin 2, the holes 17 being square in order to m e a snug fit for riveting the projections 15 after assembly. 3 in Fig. 2 is one of the armatures which fits into the hole 19 of the spring 2 and may be soldered or otherwise fixed thereto ri id at the central point of the armature. ig. 3 shows the spring, the armature and connecting rod assembled in sub-assembly. The rod 4 ex tends to the diaphragm or other devices desired for operating. Fig. 4 shows a schematic drawing of the double armature with their rods 4 and 4 joined to a third rod 5 and attached at 6 by soldering or other wise, to the diaphragm 7 with its washer 8 for supporting said diaphragm. The springs 2 and 2" in Fig; 4 may be of different thickness of metal in order to give them unlike periodicities. By having two armatures of different periodicities and a diaphragm with an entirely separatedjperiodiclty, the resultant period 1s a very much damped oscillation, and may be said to have no period, or aperiodic in character.

Fig. 5 shows two permanent Ina ets 11 and 12 and a theoretical view of t e ma netic and electrical circuits. Four win ings '13 constitute the electro-ma ets. Said electro-magnets may be woun on spools or bobbins as shown at 14 Fig. 7,'

one being placed on either side of the springs 2* and 2 Fig. 5. The pole- piece extensions 9, 9, 10 10 are integral with their respective pole pieces and 9*, 9,--10", 10 are riveted totheir respective pole-pieces 9 and 10 shown in Fig. 5 and Fig. 7, and are directly opposite each other. The clearance between the extensions and the armatures is governed by the height of the spacers 1" and 1 Fig. 7. When an electrical impluse is passed through the windings 13 Fig. 5, the two armatures are energized and have like poles in the center and like poles at each end. This construction produces consequent oles. They are attracted in the same irection as indicated by the arrows in the drawing. A reversal of current will cause a reversal in direction of the movement of the armatures; The armatures are fulcrumed at 2" and 2" Fig. 5. No adjustment is necessary as the armatures are held in alignment with respect to each other by the diaphragm which allows of wide space between the armatures and their respective pole-piece extensions.

Fig. 6 at a, b, 0, and d are shown the polepiece extensions of one poleieoe. 'Extensions b and a may be blank out and riveted to the pole-piece 9 which is bent to form an extension at each end thereof.

Having thus described my invention, what is claimed is:

1. An electro-Inagnetic device comprising a magnet having pole-pieces, said polepieces, having two pairs of extensions each of said extensions projecting toward and spaced directly opposite each other, two separa e moveable armatures, a separate flexible torsional mounting for each armature and means for holding said armatures in alignment with each other, and for spacing said armatures between said pole-pieces.

2. An electro-mechanical transforming device including pole pieces, a plurality of torsionally mounted movable armatures operativel related to said pole pieces, and means or combining the movements of said armatures.

3. An electro-mechanical transforming device including pole pieces, a plurality of torsionally mounted armatures having free ends operatively related to said pole pieces combined with means for aligning said armatures in spaced relation with said pole pieces.

4. An electro-mechanical transforming device including-a plurality of movable fulcrumed armatures, a diaphragm, a rod at tached to said diaphragm, and means for operatively connecting said armatures to said rod.

5. An eleetro-mechanical transforming device including a diaphragm, pole pieces, a plurality of armatures torsionally mounted and arranged to operate between said pole pieces, and means for connecting said diaphragm to said armatures.

6. An electro-mechanical transforming device including a plurality of torsionally mounted armatures, and a plurality of pole pieces combined with means for aligning said armatures in spaced relation to said pole pieces.

7. An electro-mechanical transforming device including pole pieces having a lurality of extensions, and a plurality of exibly mounted armatures having unlike periodicities arranged in spaced relation to said extensions.

8. An electro-mechanical transforming device including flexibly mounted armatures having unlike eriodicities, a diaphragm, and means including said, armatures for actuating said diaphragm.

9. An electro-mechanical transforming device including movable armatures having unlike natural periodicities,pole pieces, and means for spacing said armatures relative to said pole ieces.

10. An .e ectro-miechanical transrorming device including a plurality of armatures, a plurality of torsional mountings for said armatures, a plurality of pole pieces arranged adjacent to said armatures a plural- 1ty of connecting means 'for said armatures, and means for actuating said armatures.

1 1. An .electro-mechanical transforming device having a magnet including electromagnets within the field of said magnet, said electro-magnets arranged to produce consequent poles, a plurality of movable members magnetically energized by said electro-magnets, and means combined with said electro-magnets and said movable members for producing mechanical vibrations.

12. Am blectro-mechanical transforming device including oppositely-disposed pole pieces each having four terminals, aligned bobbins disposed between said pole pieces, windings on said bobbins arranged to produce a consequent pole, and armature members extending through said bobbins.

13. An electro-mechanical transforming device including a magnet, pole pieces for said magnet, a plurality of extensions for said pole pieces, electromagnets arranged between said pole pieces and extensions, and armatures extending through said electromagnets, said electro-magnets being so arranged as to produce consequent poles in said armature.

14. An electro-nrechanical transforming device including electro-magnets, pole pieces and armatures, said electro-magnets being so disposed relatively to said armatures as to produce consequent poles in said armatures, said pole pieces being so dispose-d relatively to said armatures as to cause said pole pieces to attract and repel parts of said armatures when said electro-magnets are energized.

15. An electro-mechanical transforming device including a magnet, pole pieces for said magnet, a diaphragm, electro-magnets, a plurality of armatures adapted-to be attached to said diaphragm by connecting rods extending through one of said pole pieces, a pair of spacing members adapted to receive said pole pieces, a pair of torsional spring mountings adapted to receive said armatures and said spacing members, and means for supplying an electric current to said electro-magnets for energizing said armatures producing a consequent pole at a point midway between said armatures.

161 An electro-mecha-nical transforming device including electro-maguets, ole pieces, a plurality of armatures arranged co-extensively with said electro-magnets, torsional springs for holding said armatures in operative spaced relation to said pole pieces, and said electro-magnets adapted to produce consequent poles in said armatures.

17. An energy translator comprising a diaphragm, an electro-magnet, several armatures, spring means for suspending each of said armatures, each spring suspended armature having its own natural period of free vibration and lyin within the field of the electro-magnets, an means forconnecting said armatures to said diaphragm.

18. An energy translator comprising a diaphragm, a magnet, several armatures,

each of said armatures within the field of said magnet, a coil of wire about each of said armatures, means for connecting said coils of wire in non-inductive relation to each other, and a connecting rod from each armature to said diaphra 19. An electro-magnetlc device comprising a magnet, several armatures within the field of said magnet, and a' coil of wire about each armature, said coils being con- 10 nected in non-inductive relation to each other.

In witness whereof, I hereunto subscribe 'my name this 14th day of July, A. D. 1925.,

HENRY MERLE WILLIAMSON.

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