US798339A - Electric vibrator. - Google Patents

Description

No. 798,839. 7 PATENTED AUG. 29, 1905.

. H. J. HEENEY.

ELECTRIC VIBRATOR.

APPLICATION FILED NOV. 22, 1904v 3 SHEETS-SHEET '1 ANBIIEW. B. GIMIAI no. mcwumoamruzns. wusnmcmu. n cy No- 798,339. 7 PATENTED AUG. 29, 19056 H. J. HEENBY.

ELECTRIC VIBRATOR.

APPLICATION FILED NOV; 22, 1904.

3 SHEBTSSHBET 2.

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No. 798,839. PATENTED AUG. 29, 1905. H. J. HEENEY.

ELECTRIC VIBRATOR.

APPLICATION FILED NOV. 22. 1904 3 SHEETSSHEET 3.

//III///%// mnniw. u. mumn 00,. Pumaumocmmus, Msmnmcn, n 04 UNITED STATES PATENT OFFICE.

HENRY J. HEENEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HOLTZER I CABOT ELECTRIC COMPANY, A CORPORATION OF MASSACHUSETTS.

ELECTRIC VIBRATOR.

Specification of Letters Patent.

Application filed November 22,1904. Serial No. 233,859.

To all whom vit may concern.-

vBe it known that I, HENRY J. HEENEY, a citizen of the United States, residing in Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Electric Vibrators, of which the following description, in connection with the accompanying drawings, is a specification, like letters and numerals on the drawings representing like parts.

The present invention relates to an electric vibrator, and is embodied in a vibrator to be operated by direct currents, the invention being especially applicable to large gongs, where considerable power is required to strike the necessary blows and a comparatively slow rate of vibration is desirable.

The invention is further embodied in novel details of construction and arrangement whereby the operative parts may be thoroughly incased and rotected, the construction, furthermore, lyeing simple and inexpensive.

In the construction embodying the invention two sets of, electromagnets are used, with an armature movable between the polar extremities of thesaid electromagnets, the said armature being connected with a bell-striker, which in turn controls the circuit-closers which cause the two sets of electromagnetsto be alternately energized while current is flowing through the instrument. The construction is such that the armature normally stands midway between the polepieces of the two sets of electromagnets, so as to be well within the magnetic field of either, and when the said armature is in such intermediate position a circuit is closed through one or the other of said sets of electromagnets, but not through both. When, therefore, current flows through the instrument, one set of electromagnets will be energized, so as. to attract the armature in one direction, the movement of the armature producing a corresponding movement of the bell-striker, which movement in turn results in the operation of a circuit-controller which breaks the circuit through the electromagnets which have been energized after the said bell-striker has acquired suflicient momentum to, strike the bell. At this period the circuit through the entire instrument is open; but the bell-striker, which is arranged to return to, an intermediate position, preferably by current is turned on, and after the current ceases and the parts return to their normal position the circuit will remain closed through one or the other set of electromagnets, so that the device is ready to operate as soon as the current is turned on again.

Figure 1 is a plan view, on a small scale, showing the general arrangement of the gongs and striking mechanism. Fig. 2 is a plan view, on a larger scale, with the cover of the casing removed and the parts shown in their normal position. Fig. 3 is a similar view with the parts shown in the position in which they stand after the impulse of current has passed through one set of electromagnets and the circuit broken by the action of the bell-striker, and Fig. 4 is a partially vertical section on the line as of Fig. 3 looking toward the left.

The invention is herein shown as embodied in a two gong vibrator, the gongs A being mounted at the ends of a curved base or support A the striking mechanism being inclosed in a case A mounted on the baseplate between the gongs. As herein shown, the case is provided with lugs A to receive screws which hold the case upon the base, the case being further wholly incased by a cover A secured to the face of the case by means of screws A. At the top and sides the case is provided with a flange A projecting beyond the face of the cover, and thereby affording further protection from moisture, &c. The bell-striker a is pivotally supported in the lower wall of the case and is connected with the armature b by means of a swivel connection, the upper end of the bell-striker a being shown as passing through a boss 6 which has a stem 6 bearing in an opening or bore through the lower end of the armature 6. Through this connection, therefore, the movement of the armature b in one direction will cause a corresponding multiplied movement of the bell-striker a in the opposite direction sufficient to cause the said striker to ring the gong. As herein shown, the bell-striker a is provided with a 4 and 4 and into the path of the bell-striker hub or enlargement a, which fits in an open-- ing through the lower wall of the case, there beingfia stem a projecting rearward from said hub and having a bearing in a bore'or v socket formed in the lower wall of the case. The parts are held in position by the'case' cover, and by the construction described the openin through the wall of the case is substantia ly closed, so that the case is practically sealed when the apparatus is in opera tion. The armature b is pivotally supported at b -ne'arthe top of the case and extends"= from'said pivotal support'between the polarextremities of electromagnets c and d, which are arranged to be alternately energized by current entering the instrument from termi nals'connected'with binding-posts A and A".

From the-binding-post A the circuit extends through-the conductors 1 and-l to the elec'" tromagnets c and d, respectively, andthence through the conductors 2 and 2*, respectivelyyto switch-terminals 3 and 3, which terminals cooperate with other terminals 4 and 4, both'of which are connected with a conductor'5, which leads to the binding-post A". If, therefore, the switch-contacts3 and 4 are-in electrical engagement with each other, the current: will pass through the electromagnets 0, while ifthe contacts 3* and 4* are in engagement the current will pass through the electromagnets (i. As herein shown, the switch- terminals 4 and 4* con' sist of light springs which are arranged-to beacted upon by a tongue or actuating member e, pivoted at e upon the armature b, the said tongue extending down between the springs a,- the upper end of which engages said tongue, holding the same in contact with one or the other of the switch-terminals, as best I shown inFig. 2. In the construction shown the-bell striker is in a vertical position,-so

that normally it will hang in the position shown in-Fig. 2 midway between-the-two gongs andwillclose the circuit through one or the other ofthe sets of electromagnets, ac

cording to the side of thebell-striker against Whichthe tongue-e rests.

With the parts in the'position shown in Figl-Z ifthe current is turned on-the armatermediate position between the-contacts'4 and4 thereby breaking the circuitentirely.

As the bell-striker returns, however, through force'ofgravity or otherwise, toward them-- termediate position it will 'engagethe tongue 6 upon the opposite side, thus closing :the circuitthrough the contacts 4 and 3*, thereby energizing the ele'ctromagnets d and-produc resales) ing a movement'of thestriker a, inthe opposite direction. This operation will continue so long asthe currentis turned on; causing the-- gongs to be struck alternately and atza relatively slow speedf The spring-contacts are separatedfrom each other at their upper ends by insulating-strips f and are secured to the armature by means of screws f Figlp4', there being a strip of insulating material f be.- tween the inner spring of each pair and said armature. As shown in Fig. 4, the springs are U-shaped, the movable ends thereofpro j ecting forward beyond thefaceof thearrna ture, soasuto =be'=-aeted-upon by the tongue '6. The tongue e is alsoinsulated, as shown; so that noneof the metallic parts of the instru' m'ent frame- '01 casing are lI1'fl1 I6IIO6d'byjC1f1T rent; and *there'ds '-therefore"'-nochance (of grounding "if the-"vibrator is plab'ed wherd there is l-iabi'lity-of gettinga 'metallic circuit 8 5 through the frame to the ground. Tli'eumiL tiplying connectionbetween -the- 'ar'mature and the bell-striker-insures distinct and -pow-=- erful blows of'the-striker with material-"inter I vals of time-between.

1. Ina *two-gong vibratorfa base orsupport; a gong mounted at each end thereofg 'a I; casingmounted on said support midway between said gongs'y a strikerpivotally support 5 ed in-thelo'werwa'llof sai casin yanarma ture contained in sa-idtasing an connectcd with said strikeryelectronragnets to'act upon said armature; and circuit-controllers also contained withinsaid'casing-and' operatedby 10o said-striker, substantially "as described! 2; f In a vibrator, "an inclo'sin'g casing ;& a vibrating member-pivote'd-in the lower-Wa'lloi i said casing and having a hub or-enlargement fitting an opening iii-said walloppositely" IO 5 disposed electromagnets" within said casing an armature 'pivotally' supported between, said 3 electromagnets a: swivel connecting-- member connecting said armature with said striker;circuit-controllers carriedby saidar- 1 1o mature; and-"an actuatingsm'ember for said circuit-f controllers" opera-ted by said- 5 bellstriker in the movement thereof,- substantially *as described;

' 3 In a vibrator ithe combination with op-' 1 1 5 positely dis'posed electromagnets of a pivot-" ally supported: ar-mature between the poles of said electromagnetsg spring.- contacts mounted on-the opposite sides of said arma1+ ture=-to- -co-ntrol,= respectively; thewcircuitsi--12o through said =e1e'c'tromagnetsi; a striker -arrn: pivotally supported near one endg and hav ing 'a swive I connection- 'neara sai-d supportr with saidarmature'yand a tongue pivo'tally connectedwithsaidarmature' and projecting between said contacts intoithepath' of e ther striker; the length 30f said itongue being suchthat thestriker -pass out of contact therewith duringthe movement of the armature'e in reither'direction; substantially as described: *1 0 4. In avibrator, electromagnets; an arma- In testimony whereof I have signed my ture pivotally supported between said elec- I name to this specification in the presence of 10 tromagnets; a circuit-congrolleili for said electwo subscribing Witnesses. tromagnets mounted on t e sai armature; a

5 bell-striker connected With said armature HENRY HEENEY' and cooperating with said circuit-controller; Witnesses: and an independent pivotal support for said HENRY J. LIvRRMoRE, bell-striker. MARGARET E. COVENEY.

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