US1002820A - Electric alarm. - Google Patents

Description

P. ABROWN,`

ELECTRIC ALARM. APPLIUATION FILED Bmw, 1909.

Patented sept. 12,191.1.,

s SHEETS-sum 1.

P. A. BROWN.

ELECTRIG ALARM. APPLICATION FILED PI:B 5,1909.

; 1,002,820u Patented sep t.12,`19.11

a SHBETMSHBET 2*.

P. A. BROWN.

ELECTRIC ALRM.v 'UNICA-T1011 FILED 11mm. 1909.

3 SHEETS-SHEET 3.

Snom/1to1;

witnesses v Patented 'sept-ila 1911.

.contains a 'series oitV notches.

'srarns entranti enrich.

PEABODY A. BROWN, OF DENER, COLRADG.

nLncrni-'o ALARM.

incasso.

To all whom t may concern:

'Be it known that l, PEABODY BnoWN, a citizen of the United Statefnresiding in the city and county of Denver and State of 1Colorado, have invented.v certain new and useful improvements in Electrica/Marins; and l do declare thet'ollowing to be a full, clear, and exact description of the invention, such as will enable4 others skilled in the art to which it appertains to malte and use the saine, reference being had to the accompanying drawings, and to the letters and figures ot' reference inarlredthereon, which torna a part of this specication.

lily invention relates to improvements in electric alarms, my object being to provide apparatus adapted for use in cities,A towns and other localities where itis desirable to alarm or notiityv a considerable number of people, of the existence of a tire ina certain locality.

My improved system involves a series of alarm boxes located in a circuit, that also contains lan electioniagnet, which. during the giving oi an alarm is intermittently energized, its circuit being; made' and broken one or more times, depending upon the construction of the alarm boit vinechanisnu, ifrhicli .contains a dislr, whose periphery its the disk is actuated *during the giving of an alarm, a metalbrush, or contact, which engages the saine, is disconnected therefrom during the passage or the portion' 'ci the dislr contain-- ing the space or notch between two projections or segments, thus breaking the call-box circuit every time one out the spaces registers with the position of the contact portion ot said brush. ,llVhenever the circuit is breiten a lever or pivoted arno, mounted aducent to the magnet, drops-and closes the -ircuit Athrough one solenoid, thc circuit oroug'h a companionsolenoid beine; broken.

fliile, 'vlien thecall-box` circuit is closed, the armature lever is actuated to close the circuit through the second solenoid, the cirn cuit oit the first solenoid being broken. The action ot the solenoid core, as the circuit is closed through the solenoids. is such 'as to (w egal.

- operate mechanism for opening and closing a. pipe connected witlr a source of Huid, as steam or' air, whereby the said tluid is placed in and cut oli" from communication with whistles, which are operated to giveV the en necessary alterni., tithe' number otltinles that Specification of Letters Patent. Illgremtd gagging 129 i911@ Application filed February 5, 1909.

Serial No. 476,272. i

' the cut-oit valve is opened and closed for the operation of any particular call-box, i11- di'cates the location of the said box, aud also the" location of the fire, since the opening and closing of the valve a given number of times, results in the blowing of' the 'whistle a corresponding number of times,

each 'time indicating a figure or character, which to those, who understand the system, indicates the number of the call-box.

l'laving briefly outlined my improved construction, l will proceed to describe the sance in detail, reference being inade to the accompanying drawing, inwhich is illustrated an enibodinent thereof.

T nl this drawing, Figure 1 is a view, largely diagrammati, illustratingr my inn proved system, and showing a series of 'callboxes located in a battery circuit. Fig. 2 is a detail View, illustrating the solenoids and the mechanism connected therewith for operating ,the valve for controlling the tiuid, which blows the whistles. This view is on a larger scale than Fig. 1. Fig. 3 is a detail view, illustrating the electromagnet of Athe call-box circuit, the parts being shown on a larger scale. Fig. 4 is a detail View,

illustrating' the contacts employed in inaking and breaking the two circuits, which may be termed the magnet and solenoid circuits. F 1g. 5 1s a sectional detail View, illustrattino; one oi' the trunnioned solenoids employed in operating' the cut-oil' valve. Fig( 6 is a detail view of a disk of the character employed in connection with the call-boxes. The saine reference characters indicate the saine parts in all the views.

Referring first to Figs. 1 to 6. inclusive, let the numeral 5 designate an electromagnet, whosey coils are located in acircuit con` tainingaseries oir call-boxes 6. This circuit includesa source of electricity 7', from onev lpole ot which a conductor 8 leads to ythe magnet 5, while fromv the other pole a con-v ductor 9 leads to an adjacent call-box. From the opposite terminal of the magnet 5 a conductor l0 leads to a call-boit oppo-` sitely lecated from that connected with the conductor 9. Each of these call-boxes is supposed to contain a disk l2 (see Fig'. 6), having a series' of ,recesses 13 of diferent lengths, the periphery of theedislt beingI enicoy gaged by Contact 14. lt may be assumed that when the 'call box is operated this disk rotates ,around aspindle 15,*wh1ch 1s con- 'nected withone circuit Wire,

po ite pole of the circuit.

the metal brush or contact 14 being connected with the op- Located adjacent a metal bar 16, and carrying a carbon elece at 18, which is"located between two t the electromagnet is pivoted at 17, trod `similar electrodes, respectively designated which leads a conductor 26 to a brush 27 of l lieved that the.

.laterally progecting journalsy shown at 57 and y ties of the lever .lng an arm y61 pivotally connected, asshoW-n an electric generator 28, from whose oppo` site' brush or pole 29 leads a conductor -3Gto 31, mounted upon a box 32, inclosing two solenoids 33 and 34. From the bindingI post 31, inside the box, leads a conductor 33 to a pin 35, upon which a bar 36, located adjacent to the two solenoids, is pivoted. These solenoids are trunnioned on a suitable support,their casings 37 having 38, which engage parts 39 and 40 respectively (seev Fig. 5). Located adjacent, to the solenoid 33 is a contact41, from which leads a conductor 42 to a terminal 43 of the solenoid 34, while from the other terminal 44 of the selen-:iid 34 leads a conductor -45 to a binding post 46. mounted upon the .box 32. From this same binding post, and located outside of the box, .leads a conductor 47 to theelectrode 19. Located adjacentto the solenoid 34 is a contact 48 similar to the contact 41, from which a conductor 49 leads to a terminal 50 of the solenoid 33. From the opposite terminal 51f of the last named solenoid leads a4 conductor 52 to a bi-nding post 53 mounted upon the box 32. From this binding post outside of the boX leads a conductor 54 to the electrode 20. 'The cores or rods-55` and 56 of the solen'oids 33 and 34 are pivotally connected, as

58 with the opposite extremi- 59, fulcrumed at 60, and havat 62, to the rod 63, Whose opposite extrem! ity is pivoted, as shown'at 64,`to oneend of an arm`65,whos'e opposite extremity is connected, as shown at 66, with a cut-oli valve 67 for controlling the passage of fluid through .a pipe 68 leading toa number of two levprs 59 and 36 are connected by a wire or. rod 70, thepoints`ot' connection being arlevers during the operation ofthe mechanism From theforegoing description, it is beoperation of my improved 'system, as. thus farA described, will be readily understood. ,65 l

Iwe assume that the pipe 68 eads .from a steam generator or from a solenoid 33, the

lbe closed parts 63 source of compressed air, and also that the cut-0E valve67 is closed, vand if we also assume that a fire occurs, and one of the call-boxes is operated, the description of the Working of the mechanism will be as foljlows: Every time a space 13 of the disk 12 registers with the position of the metal con- 'tact 14, the call-box circuitwill be broken and the magnet 5 denergized. AThis results in the dropping of the lever 16 (see F ig. 1), whereby its electrode 18 is brought into contact with the adjacent electrode 20, thus closving the generator circuit through the solenoid'33, and shifting the lever 36 to the dotted' line position in 32. In Vthis event .the path of the current may be traced as follows: from the theconductor 26, the art 25, the lever l16, the electrodes 18 and Si), the conductor 54, the binding post 53, Athe conductor -52'to the `terminal 51 of the solenoid 33, through the coils of the said solenoid t o I'the terminal 50 ofthe latter, and thence through the conductor 49 to the contact 48, and thence through the bar 36, the conductor 33, the binding post 31 and the .conductor 304 to the opposite pole '29 of the generator. When the lever 36 is thrown tothe dotted line position in .Fig 2 by the energizing of the lever 59 is also thrown to the dotted line position of the same figure, and the arms actuated, as also indicated by dotted lines, to open the valve 67 and allow the operating fiuid to pass to the whistles 69 and operate the same. Again as soon as Athe Contact 14 (see Fig. 6) reaches a tooth or segment 4 of the disk 12 during itsgrota- A tion in any call-box, the call-box circuit will the result that the lever 16 will be brought to the position shown in Fig. 1, whereby the two electrodes 18 ,and 19 are brought into contact, thus closing the generator circuit through the solenoid' 34, whereby the core 56 of the said solenoid wilbbe drawn thereinto, .shifting the lever 59 to the full line position in Fig. 2, and also the corresponding position, and operating the. and 65 to close the valve 67. In this event the path of the current may be traced, us follows: from the pole .27 of the generator to the conductor 26, the lever 16, the electrodes 18 and 19, the conductor 47, the binding post 46, the conductor 45 to the terminal.' 44 of 'the solenoid 34, thence through' the coils of the said solenoid to the terminal 43, thence through the conductor 42 to the contact 41,L thence through the lever 36, the conductor 33, the binding post 31 and the conductor 30 to the opposite pole of the generator. It will thus ybe observed thatcvcry time there is a .make and break in the circuitof the magnet 5, otherwise termed the call-box circuit, the solenoids 33 and v34 will be alternately pole 27 of the generator through and the magnet 5 energize-d, with lever 36 toa Ilti l recesso energized and the cut-od valve controlling the passage of fluid to the' whistles, opened and closed. lt will, therefore, be understood that by properly constructing lthe disk l2, any desired number of whistle signals may be given, the length of the period during which each vwhistle is sounded, depend ing upon the length of the spaces or recesses formed in the outer edge of a disk 12, hence'. it is evident that by varying the const-ruction of these disks for different call-boxes, the whistling signals resulting from the operation of any call-box, will indicate to a 'person understanding the system, the number o't' the said box.

Each solenoid is provided with a cushion ii, located at the inner extremity thereof, and adapted to engage the movable core 56 or S9 as the case may be. This cushion forms a stop to prevent the movement of the core farther than is necessary, in order to perform the required function, namely, the

operation ot the valve or ot' any other device with which my improved electromagnetic motor may be connected. 'This is important, since it is desirable that the workshould be quickly performed. lThe cushion A is preferably composed of rubber, and should be so located as to stop the inward movement of the core after the latter has passed the point where it can be advantageously acted upon by the magnetic iniiuence, since tti titi

' a hiph degree of heat, or which is beyond this point the core simply trayels by virtue of its momentum, and there 1s a 'tendency to move it in the opposite direction.. ln order to prevent any undue resistance to the inwardtravel of the core by the formation Voi? an air cushion, the rubber cushion fr, well as the cap or closure, at the end'oi1 the case is provided with an air passage or duct B, whereby the air is alAr lowed to escape freely. it may be statedrthat my improved solenoid construction, may be employed to do various kinds ot Work. ln this application the operation of a valve for opening and closing1 a conduit, through which motivo fluid 1is passed to a motiveluid-actuatedalarm device, is, iilustrated and described.

` i rihis disclosure is but one oit the4 uses of my improved motor, as will be readiiy under stood, but the invention is not limited thereto, as indicated by the scope of the appended claims. f

'fthe reason for using carbon contacts, as design' ted by the numerals i8, 19,20, 73 and 74e, is'tliat the strength of thev current required-in order to developvthe necessary magnetism in the solche-ids to perform the required Work, is such that metal contacts would be fused, 'thus making it `impracti-` y cable to employ anything but carbon or some other similar substance capable ot' resisting practically l1 On lisible in work of this kind.

Attention isicalled to the fact that inde-i pendently or the lrod 7,0, the bar 36-wll be actuated, whereby it is caused to move from 1 this statement thatV the same result fwill -follow when the solenoid 84 is energized, 8o

that is to say, if We assume that the bar 36 is in the dotted liney positlipn, it vfillbe drawn oy the magnetic iniiuence to the full line position when the last named solenoid is energized.

Having thus described my invention, what l claim is:

l. The combination of a motive-fluide' actuated signal, a valve for controlling the passage of fluid thereto, a air of solenoids 90 connected in operative re ation with the valve to open and close the same, an electromagnetic rela for alternately closing the circuit through the two solenoids, a solenoid circuit element actuated by each'solenoid au when energized, to break the circuit of the energized solenoid, thus Ileaving bothsoienoids normally dcnergized, substantially as described. r

2. lu an electric alarm, 'the combination .i170 with a whistle, of a ipe communicating therewith, a. source o motive fluid with which the pipe isalso connected, a valve for controlling the iow of fluid from the said pipe to the whistle, a pair of solenoids prouw' vided With movable core members connected in operative relation with 'the valve, a circuit in which the solenoids are located, a call box circ'uit,'an electro-magnet located in the' last-named circuit, an armature for the said '110 magnet, the armature being arranged in the' solenoid circuit and adapted to alternately closethe circuit through the magnets, and a Soiano-id circuit element actuated b each lsolenoid when energized to break the circuit 115 i of the energized solenoid, for the purpose set forth.

device located in the solenoid circuit, the said device being movably mounted and arranged to be operated by the magnet locatedin the 130 call bxlcircuit Vto alternately close'the circuit through the two solenoids, a solenoid circuit element actuated by each solenoid whenl energized to break the circuit of the energized solenoid, for the purpose set forth.

\ 4. The combination with a signal adapted to be actuated by amotive Huid, a pipe carrying the said motive fluid and communieatingA with the signal, a Valve for controlling the passage of H uid through the said pipe, a pair of solenoids connected in operative relation with vthe valve, a call-box circuit, a

, magnet located therein, and a movable mem` ber located in the solenoid circuit and adapted to be actuated by the magnet to alternately close the circuit` through the two solenoids, and a solenoid circuit element, actuated by each solenoid when energized tov i actuated signalial `pair `break the 4circuitlof the energized solenoid,

in presence of two witnesses.

PEABODY A. BROWN.

y vWitnesses:

Jnssm HoBAn'r,

A,A. EBERT OBRIEN.

y 3o In testimony whereof I aix my signature'

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