US757271A - Electromechanical gong. - Google Patents

Description

No; 757,271; PATENTED APR. 12, 1904 F. W. COLE.

ELECTROMEOHANIGAL GONG. APPLIOATION FILED 0914,1902.

N0 MODEL Jim??? Z02".

Patented April 12, 1904.

I esign some NEWTON. MAs'sAciius-FJTTS,nssienonirofunirnn f gsrrnrns FIRE AND rouse- TELEGRAPH GOMPANY, or BOSTQN,.=MASSA- I IQHUSETTfi .AyGORPORATlON on IN i f e d+nonecemcki Leone, i

SPECIFIGATION, formingpart orneitersrghcno,vs'fiefii, dateqia r'ii 12,,1'904.

Beit; known:- that I, newsman W of Newton, county of Middlesex,- State of' I Massachusetts,..,have invented an Improve} vInent ,inElectromechanical; Gongs, of which,

(the following description, in connection with Qtheaccompanying drawings, is a. specification, like, characters on the drawings representing like parts; 1

;1o 4 This invention'grelates to electromechanical 1o; lingdevice'=-in-'=engagement with the parts t6 1thold=the actuating mechanism at'rest and gma tnre to'move the controlling device to set I freetheactuat1ng mechanism; also to provide if- 2 5 Fm'eansyfor. restoringvsaid governing device and -armature and parts connected with" said armature .ada'ptednto .beioperated by oneof :thepoweredriven\partsfias, for1instance,"the

strikearmr also'to project the w-inding-shaft Aerating parts are-placed. A p r Figure 1 shows in front elevation an electromechanical gong embodying figthis invention, the gong, which is struck by the ham- 0' through the gong, beneath which C all the opm'er, being removed to disclose the operating mechanism. Fig.=. 2 is v a vertical section of the": gongv shown-in :Eig. l1, taken onwthe dotted: line 252-, Fig.;1-.- Fig. 5 is adetail showing both governing device and controlling de- 4 wiceiin their abnormal positions and thestriking-arm,- which has been disengaged; travelingpn its :backwaid *st'rok'e. Fig; 4 is" a detail of=the "parts shown in Fig. 3', the control:

- ling device' and governingjd'evice I both being W5 restored to -their normal positlonsjrand' the striking-arm being irfitsmost remote positiongaway fromthegongm ixTllB 'specialf type' 'of gong here n -shown,- to

:ployed. when;in-another position/it permits the ar- ,llsar n elmets, on mail} 1 Y iiwhich my improvements are applied, ordinarily termed a iturtle gong and comprises a shell or case a,s'uitable supports thereinfor .the operating parts, and a gong 6, yet. my improvements'are applicable to "other types of In the gong shown a boss 4 is formed on the frame, from which projects'an externally-screw-threaded teat an, adapted to re- ,ceive a nut a, and the gong b has a hole through it, through which said "teat, passes, so that said gong rests upon the boss 21'. A hole is provided through the boss and teat -for-the winding-shaft a of the actuating -mechanism', said shaft being provided with: a square end, adapting it'to' receives suitable 'key. Inother "types of gon'gsto which my improvements are applicable of course this particular construction of support for the gong and provision for winding the actuating mechanism Will -The actuating mechanismfor the'pivoted striking armor lever '0, bearing thebell-hammer, consists, essentially, of a'ratchet toothed wheel Z,'jsecured directly to the winding-shaft a, and a springd, one end of which is connected 'withsaid winding-shaft and the: other end with a post (1. Two pa'w'ls c a are pivotally connected to the striking-arm, one at not necessarily be emeach side of the pivot of said arm, which engage said ratchet toothedwhe'el' dandwhich are operated by said wheel to in turn operate the striking-arm. 'Ihefpawl 0'-.h'a's a" pine projecting laterally from 'it, "upon which the free end of a spring a bears, the action offs-aid spring being to throw the pawl down, so that the pine will strike a fixed point-as, for instance, one side of a block c "and thereby disengage thepawl from the ratchet-wheel and "limit its movement away from the ratchet;

-wheel,""-- t i The pawl ohas a pin cf projecting laterally {from it, which occupies a position'between the ends of "two'flat'spring's o a, attachedto said block 0, the tendency of the uppermost spring a being to lower thej'pawl and therebydisengage it from the ratchet-wheel, and the tend: encyof the lowermost spring being liftthe stance, normally the lowermost pawl c is in engagement with the ratchet-wheel and the uppermost pawl c is out of engagement therewith, and as the actuating mechanism is set free the ratclietm'lieel will thrust the pawl c IQ in a direction to. move the strihingmrm c away 1 from the gong, and -such movement of the arm causes the pawl c to approach the ratchet-- wheel at the same time one of the teeth of the ratchet-wheel approaches the pawl, and when 5 the ratchet-wheel hasmoved the pawl 0 a short distanco---fa r enough for the pawl c to be brought into engagement with the ratchet wheel the spring will act to, disengage the pawl c'" from the ratchet-wheel, andthen as the ratchet-wheel continues its revolution thcpawl I." will be moved in a: direction to move the striking-arm toward the gong, and such movementnvill continue until the spring a" disengages said pawl c from the ratchet-wheel, at

5 which time the pawl is again brought into ei'igagemcnt with the ratchet-wheel. Thus the striking-arm will be moved first away from and then toward the gong, making one complete excursion each time the actuating 3O mechanism is lot oil.

The outer end of the striking-arm c is formed or provided with a detent which is engaged by a controlling device which, as herein slmwn, consists ol a let-off. comprising, essentially, a

a pawl pivoted at to a'n'arm c, pivoted at w'", the extremity of which arm is loosely .ct'mnoctcd by a link w' with the upper end of the armature t". The armature c" is pivoted ail-" and has attached to it a rctractile spring 4 a, the tendency of which is to move said armature away-from the poles of the electrohenover the armatureisv retracted atatime when not restrained from oporation by a governing device'to be described,

5 the arm w will be turned on its pivot and the let-oli' will be moved out of engagement with the detent w'", (see Fig. 3,) to thereby release the striking-arm and set free the actuating mechanism for said striking-arm. It is denormally hold the controlling device in its normal position /.-w., with the let-oil in engagement with the detenton the striking-arm, to thereby hold the actuatingmechanism at rest and that said armature shall at such time be held by its retractile sping in a semiretracted position against or in engagement.

with the governing device to be tilcscribed and that whenevcrsaid armature is attracted the governing device shall move out of the way,

so that when said armature is retracted with the governing device out of the way it will retract' its fulhsn-oke and when so doing will move the controlling device out of engage- 5 ment with the striking arm, and that thereits opposite end engages the armature.

dog.

reason of the loose connection with the armprojection serves as a stop for limiting the movement of the governing device in one direction, and when. the dog is in this position positionshown in Fig. 3. To assist in holding the dog in its elevated position,as shown in Fig.

The

1, the armature is provided or formed with a. shallow recess 0*, which receives the end of the The armature is free to be attracted by a. After the armature has been attracted and the. dog has dropped out of engagement with it into the position shown in Fig. 3--then as the armature retracts, there being no obstruction to oppose such movement, the arma ture will retract its fnllstroke, drawing upon the link 0 arm 0 and disengaging the controlling device from the striking-arm, as shown in Fig. 3, and the parts will remain in this position until mechanically restored, which of course takes place immediately preparatory to the gong responding to another electrical impulse. Thus it will be-seen that the dog drops out of engagement with the armature whenever the to restore the parts. a

A bent arm n is loosely attached to a projectionv on the striking-arm near the pivot 50 signed and intended that the armature shall thereof, which passes up by and beyond the short arm F of the dog andthrough a hole in a projection 17 on the frame, the outer or free end of said arm being thus guided by said projection, and an offset or bend is formed or provided in said arm at n, which normally occn' pies a position above the short arm 1'' of the dog but which when the dog 5 falls serves as a stop against which said short arm strikes,

so that the dog will be engaged by said bent arm )1 whenever it falls into its'abnormal position; but as soon as the said dog falls and and thereby drawingdown the the actuating mechanism released the striking-arm will be moved away from the gong, andduring this movement of the strikingarm it operates to draw down the arm n 1n the direction of its length and to' return the dog to its normal position, as shownin Fig. 4.

The dog, which has been restored to its normal position by the drawing down of the arm n, will remain in such position by the pressure of the armature upon it. Thus the governing device is restored by the striking arm during the movement of said arm away from thegong. As the dog is restored to its normal position by the arm n it engages the armature, which-at suchtime occupies its full retracted position, as shown .in Fig. 3, and. positively moves said armatureback to its normal position, as shown'm Fig. 1, near to but not in engagement with'the poles of the electromagnet 0 thereby returning said ar- 1 mature to its semiretracted position, and such movement of the armature causes the arm a to also-resume its normal position, so that the controlling device Wlll be restored or moved into a position to be engaged by the detent 0 on the striking-arm when said striking-arm again arrives at the end of its excursion and has struck a blow. Thus the governing device serves as a restoring device for the armature and for the controlling device as well as determines or governs the position of said con trolling device relative tothe striking-arm.

a I do not desire to limit my inventionto many of the details of construction herein described, asit. is obvious that. many changes may be scope of my in-- made which come within the vention. Y o t g Having thus described my invention, what I claim asnew, and desire to secure by Letters Patent, is-

1. In an electromechanical gong, the combi-d nation of a. striking-arm, actuating mechanism therefor, a let-oflengaging said arm, an elece tromagnet, an armature therefor which is connectedwithsaid let-01f and which operates said let-off to release the striking-arm when moved into its, full retracted position, adog engaging'said armature for "holding it in its semiretracted position, which 1s released by said armature when the latter is moved into its attracted position, and when released, permits saidarmature to move into its full retracted position, and means, operated by the striking: arm for restoring said dog, substantially as described. 1

2, vInan electromechanical gong, the combination of a striking-arm, actuating mechanism therefor,a pivoted let-oil engaging said arm, an electromagnet, an armature therefor, an

unyielding link connectingsaid armature with an electromagnet,.an armature therefor, an-

unyielding link connecting said armature with said let-off, said armature operating to more said let-off when moved into its full retracted pos1t1 on, a.dog engaging said armature for holdingit in its semiretracted position, which is released by said armature when the latter s moved into its attracted position, and hen released disengages said armature permit 1 in;-

it to move into its full retracted position, and means, operated by the striking-arm, i'or o erating said dog to restore the armature and partsconnected therewith, substantially as described.

' 4. In an electromechanical gong, theeombination of a striking-arm, actuating mecliianism therefor, a let-otf engaging said arm, an electromagnet, its armature, and an unyielding link connecting said .let-ofl' with said-armature, whereby the let-oif is positively moved '-.in both directions, and also held by the arma- 'ture, substantially as described. a

5.. In an electromechanical gong, the combination of a striking-arm, actuating mechanism therefor, .a pivoted let-01f engaging said arm, consisting of a pivoted dog 0 and a pivoted arm bearing it, an electromag'net, its armature, and an unyielding link connecting the arm bearinglthe let-ofi with said armature, whereby the let-off is positively moved in both directions and also held by the armature, substantially vas described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK COLE.

Witnesses; I

B. J: NoYEs, H. BQDAVIS.

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