US850691A - Electrical indicator. - Google Patents

Description

110.850,691. .Ia/ITEII'IED'APR.16, 1907. J. sUMMRRs R J. I. BERRY. .ELECTRICAL INDICATOR. y

` APPLICATION FILED APR.5. 1906.

Jesse Summers m1 John J. Berry.

elli'ozncu 110.850,691. PATENTEDfAPR. 16, 1907. .1. SUMMBRS 11 J. J. BERRY.

ELECTRICAL INDICATOR.

APPLICATION FILED APR.5, 1906.

4 SHEETS-SHEET 2.

nvcufos Jesse Summers and qil'ncs: Je Berl? C'Ill'oznm! fnl 'vonnis rrfzls CD.. vuNmc-mn mc PATBNTBD APR. 16, 1907. J. SUMMBRS JL J. J. BERRY.

ELECTRICAL INDICATOR.

APPLICATION FILED APR.5,1906J 4 SHEETS-SHEET 3.

Iltlllll J C 7% Jesse Summers and John J. Berly. Q'

nu: Nonni: V-srxzssa, wAsumcron, n. c,

No. 850,691. PATENTED APR. 16, 1907. J. SUMMERS &.J. J. BERRY.

ELECTRICAL INDICATOR.

APPLICATION FILED APR. 5, i906.

4 SHEETS-SHEET 4.

" indicia.

UNITED sfrArEs"PATENTOEEICE..

JEssE sUMMERs AND JOHN J. BERRY, or INDIANAPOLIS, INDIANA, AssIGNoRs To TIIE INDIANAPOLIS WATCIIMAN CLOCK COMPANY, OP IN- DIANAPOLIs, INDIANA, A CORPORATION OF INDIANA.

ELECTRICAL INDICATOR.

To roll 1071/0171/ t 11m/y concern.-

Be it known that we, JESSE SUMMERS and JOHN J. BERRY, of Indianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Electrical Indicator;

and we do hereby declare that the following is a full, clear, and exact description thereof, referenceA being had to the accompanying drawings, in which like letters refer to like parts.

The object of this invention is to provide an electrical signal or indicating mechanism that may be used for nre-alarm and kindred purposes and which discloses certainnuinerj als or other visible indicia'fso'as to make it a visibleV indicator in contradistinction to a bell or annunciator. This makes a reliable indicator, because with merely a bell in-a nre-alarm system one is liable to miscount the strokes, whereas with a visible indicator onecan see positively the number or other For illustration, in fire-alarm apparatus, such as shown herein, the number of the street-box that is rung will be indicated at headquarters, so that the operator there can read the number, and therefore make no error. y

One feature of the-invention consists in operating a one, two, or three wheel numeral-indicator electrically through the intervention of merely a pair of wires. herein. the most difficult of these formsnamely, the arrangement for operating three numeral -Wheels with one pair of wires; but the device may in a simpler manner operate one or two numeral-wheels. This4 mechanism is here shown also with the ordinary bell or annunciator.

The nature of this invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Figure 1 is an elevation of the left-hand side of the calling mechanism in the street-box or calling-station in its normal or unoperated position, the box being shown in section. Fig. 2 is a perspective view of the terminals or contact-plates and the calling-stations, parts being omitted and parts being broken away. Fig. 3 is a front elevation of the mechanism in the street-box or calling-station with the upper part of the middle supporting-plate removed and the lower part in section. Fig. 4 is a perspective Specification of Letters Patent.

Appumion nea April 5, 1906. serial No. 310,065.'

There is shown Patented April ic, 1907.

excepting the parts 'are in the position when the tens-wheel at the receiving-station is being operated. Fig. 7 is a front elevation of the mechanism at the receiving-station, the numeral-wheels being at 0 and unoperated. Fig. 8 is an elevation of the righthand side of what is shown in Fig. 7. Fig. 9 is a plan view of the mechanism at the receiving-station, the numeral-wheels being at zero and a diagram of the wiring at the receiving-station. Fig. 10 is a central vertical section through the numeral-wheels and associated parts. Fig. v11 is a perspective View of the inside of a part of the numeral-wheel and associated parts, parts being broken away. Fig. 12 is a perspective view of part of one of the indicating-wheels and some associated parts, said wheel being viewed from a point different from the point of view as shown in Fig., 11. Fig. 13 is a diagram ofthe electrical connections at and between the calling and receiving stations. Fig. 14 is a section on the line 14 14 of Fig. 8. Fig. 15 is a section on the line 15 l5 of Fig. 8. Fig. 16 is a perspective view of part of-the relay showniin Fig. 8.

In order to explain this mechanism, we will proceed to describe first the calling box or station; second, the receiving box or station; third, the wiring or electrical circuits, and, fourth, the mode of operation. It is understood that there may be several sendino-stations for one receiving-station.

Referring in the first place to the first six figures, a suitable box 2O is located like a'v lire-alarm box at any desired lace to contain the calling' mechanism ereafter described. A frame is mounted within said box, consisting of a back plate 21 and an intermediate plate 22' parallel, said intermediate plate being connected with the back plate by bending the lower end ofthe intermediate plate horizontally and securing to it the back plate. In said plates 21 and 22 a shaft 23 is mounted, with a crank 24 thereon l is actuated by a pinion 39 thereon.

direction indicated by the arrow. A coilspring 25 is mounted on said shaft, the inner end of'which is secured to the shaft and the outer to the post 26. The function of the spring is to actuate the shaft 23 in the opposite direction from the movements indicated by the arrow. Upon said shaft 23 outside the plate 22 there is secured a pair of spring contact-pieces 27, adapted to engage a pair of contactplates 28, secured on the insulation-block 29, which is fastened to the inter.- mediate plate 22. ' Vires 30 and 31 lead from said contactlates to the receivingstation. While the pieces 27 are in engagement with the contact-plates 28, the circuit through wires 30 and 31 of thereceiving-station will be s'hort-circuited, and when the contact-pieces 27 are moved back away from the contact-plates 28 by the crank 24 the circuits through the receiving-station may be opened and closed. An eseapement 32 is mounted on a pin 33 and engages an escapement-wheel 34 on the arbor35, which is actuatedby a pinion 36 on said arbor. The pinion 36 meshes with a gear 37 on a shaft 38, which The pinion 39 meshes with a gear 40, that 'isv mounted loosely on the shaft 23. It carries a pawl41, held by a spring 42 in engagement with a ratchet-wheel 43, that is secured rigidly on said shaft, and in this way power is transmitted to the wheel 40 from the shaft 23. This mechanism therefore renders the action of the spring 25 slow inreturning the shaft 23 after it has been actuated by the crank 24. On the shaft 38 a circuit-closing wheel 45 is mounted, so as to be actuated by the mechanism that has been described. It has upon it one row of contact-points 46 for the units-wheel of the receiving-station and adapted to engage only one of the contactplates 28. On the other side of said wheel there is a row of pins 47 for the tens-wheel of the receiving-station and the other contactplate 28. There is also a centrally-located row of widened contact-pins 48, adapted to engage both plates 28 and operate the hundreds-wheel in the receiving-station. Said wheel 45 is connected with the ground by a wire 245 and the frame of the box, so that the current from the receiving-station will pass through one of the plates 28 or both when the pins 48 are in contact therewith and the contact-pieces 27 are out of engagement with the plates 28. In each callingbox the wheel 45 is equipped with contactpins 46, 47, and 48 in o'rder to actuate the indicating-wheels at the receiving-station to different extents and bring to view a certain number representing said calling-station. Furthermore, these contact- pins 46, 47, and 48 are placed on said wheel in a staggered position, so that no two of them will engage the contact-plates 28 at the same time, but

the engagement of said contact-points with said plates must be successive. four contact-pins46 on the wheel 45, one rotation of the wheel 45 will operate the unitswheel at the receiving-station to the numeral 4. If there be five contact-pins 47 on said wheel, it will-move the tens-wheel in the receiving-station to the numeral 5." If there be four wide contact-pins 48 on said wheel, it will bring to view the numeral 4 on the hundreds-wheel at the receiving-station. Consequently said calling-box when operated will always bring to view the numerals 45,4 at the receiving-station.

it is immaterial how the contact- pins 46, 47, and 48 are placed upon the wheel 45 so long as they engage their respective plates 28 and are out of line vwith each other transversely. Thus the four pins 46 could precede all the pins 47 and they could precede all the pins 48 or be arranged in any otherway, for, as will hereafter appear, the indicating-wheels at the receiving-station do not have to be successively operated.

The wheel 45 is rotated by the mechanism heretofore described in the calling-box, one com lete revolution resulting from each operation of the handle 24. Consequently the extent of movement of said handle 24 must be limited, and this is done by the stop-pin 50 on the shaft 23, that is adapted to engage the forward stop-pin 5l and the rearward stop-pin 52, secured to the intermediate plate 22. The escapement-controlled mechanism therefore moves the wheel 45 one complete revolution, while the shaft 23 is rotated to the extent of movement permitted by said stops.

Considering now the receiving mechanism shown in- Figs. 7 to 12, it is mounted in a box 58, (indicated by dotted lines in Fig. 7.,) having a slot 59 in the front face thereof through which one numeral on each of the numeral or indicating wheels 60, 61, and 62 is visible. These wheels have large numerals from 0 to 9 and mounted loosely on a shaft 63,

If there be.'

IGO

IOS

that has bearings in arms 64, extending from outer end fastened at 71 to one of the supporting-plates 76, as seen in Figs. 9 and l0. Therefore each numeral-wheel has an independent means for actuating it from zero whenever permitted by the pawl 72 on the lever 73. This pawl at each operation of said lever 73 permits the spring for the corresponding indicating-wheel to actuate said leach numeral on the wheel and one for the blank space between 9 and "0.. Said lever 73 has also another pawl 74 on the under side of the ratchet 67 to engage the teeth of said ratchet when the pawl 72 is elevated in order to prevent the spring from moving the numeral-wheel more than one notch. A spring 75 extends from the pawl 74 to the base of the post 65, that tends to hold the pawl 72 in engagement with the ratchet, eX- cepting when it is disengaged by the action of the magnet 76 on the armature 77. Therefore every time the magnet 76 is energized the pawl 72 will be momentarily released from the ratchet 67 andwill permit the spring 68 to move the numeral-wheel one notch. There are three of the magnets 76, one for each indicating-wheel, and they are independently energized at diil'erent times by the current from the calling-box. After the indicating-wheels have been operated bythe current from the calling-box they will remain in their actuated position, disclosing the number of the calling-box until they are reset by operating by hand the crank 80. This is outside ofthe box 58. This is done by the operator and moved in the direction indicated by the arrow on the end of shaft 63 inFig. 8. On account of the inclination of the teeth on the ratchet-wheel 67 this movement is possible, which turns the numeral-wheels back to zero. The movement of the shaft 63 by the crank 80 causes the liorizontally-extending arm 81, secured to the shaft, to engage a projection 82 from the indicating-wheel and return said wheel from the position shown in Fig. 12 toward zero until said projection 82 engages the stop 83 on the stationary plate 70. Then the Wheels will all be at zero. Such rotation of the shaft .63 by the. crank 80 tightens the spring 84, (seen at the left-hand end of Fig. 10,) so that when the wheels have reached zero and the crank 80 is released the spring 84 will return the shaft 63 to its normal position-that is, until the arm'81 engages the stop 83. This last position is illustrated in Fig. 11. The inner end of the spring 84 is secured to saidl shaft 63 and the outer end pin 69 in the left-hand standard 65. The arm 81 is on a collar 85, that is stationary on the shaft 63.

Upon the base 66 there are two relays A and B, one for the units-wheel and another for the tens-wheel of the device, each consisting of a magnet 86, a frame 87, carrying the magnet and insulated from but secured to the base, an arn'iature 88, pivotally mounted at 89 to one end of the frame 87 and having on its opposite end a crank 90, that carries an insulating-block.190, normally in contact= with the contact-srip 93, secured in the insulating-block 92, mounted upon said frame the tens-wheel 76.

pins 94 above it, the lower pin being norm ally in contact with the strip 91 and the upper pins 94 being movable into contact with the contact-strips 95, carried on said block 92, when the armature 88 is actuated, as the crank will elevate the strip 93 and the pins 94 and cause said pins to engage the strips 95 and contact with strip 91 will be broken. insulating-posts 191 are mounted on the frame 87 and extend up loosely through the strips 91 and 93 and keep strip 95 normally out-.01 touch with strip 93 when the armature 88 is not actuated. The strip 93, acting through the arm 90, holds the. ar-

mature 88 normally away from the magnets.

The wire 30 from the station runs to the magnet 86 of the relay Aon the units-wheel side. A wire runs from the lower contact-strip 91 in the relay A to the magnet lfor Tires 101 and 116 lead from the strips 95 of the units-wheel relay A to the magnet 76 ior the'units-wheel and to the magnets 76 for the hundreds-wheel 116.

A wire 102 runs from said magnet 76; for the -i units-wheel to the lower strip 91. of the relay B for the tens-wheel. A wire 103 runs fromthe middle strip 93 on the units side oi: the device to the battery 104 and a wire 105 from said battery to the corresponding strip 93 in the tens-wheel relay B. Tx'ires 107 and 1.17 run from the top contact-strips 95 in the tens-wheel relay B, the wire 107 going to the said magnet 76 for the tens-wheel mechanism and wire 11.7 going to the magnet oi the hundreds-wheel mechanism. A wire 31 connects the call-boy to a magnet 86 for the rela;r B. A Wire 111 runs from said m agnet 86 to battery 113, and the wire 112 runs from the magnet 86 in relay A to the battery 113, from which a wire 114 `runs to the ground at 11.5. Tires 315 connect the coils of the magnets 76.

The device operates as follows: Assuming that the crank 24 in the call-'box is operated from the position shown in Fig. 3 in the direction of the arrow as f'ar as the stops 50 and 51 (shown in Fig. 2) will permit, the contact-springs 27 will then be in the dottedline position shown in Fig. 3. As soon as the crank 24 is released by the hand the spring 25 will begin to actuate the clock mechanism and througl'i it the wheel 45, containing the various pins corresponding with the units, tens, and hundreds wheels at the receiving-station. Assuming the first pin of the wheel 45 that engages one of the springs 28 is the units-pin 46, it engages the corresponding contact-plate 28. As soon as that happens a circuit is established from the battery 11.3 over lines 112 through relay A for the units-wheel and over wire 30, including battery 284, through contact-plate IOC 28, wheel 45, andwire 245, to ground at 246 and from -ground at 115 over wire 114 to 'A battery 113. This will energize the magnet 86 of relay A and move the armature 88 and the crank 90, connected with said armature, so as to bring the contact-pins 94 into engagement with the upper contact-strips 95. That establishes a new circuit. The circuit just described is the relay-circuit, and the second circuit just referred to may be called the indicating wheel operating circuit. For thev units-wheel it may be traced as follows: It runs from the battery 104 through wire 103 to the middle contact-strip 93 in the relay-A on the units-Wheel side. When the magnet 86 is energized from the call'box or station, as has been explained, the armature 88 will move the middle contact-piece 93 upward, causing thepins 94 to close the circuit with the strips v95 and break contact with strip 91. The circuit then passes through said strip 95 and the wire 101,

through the units-magnet 76, wire 102, and

lower strip 91 of the relay B for the tenswheel. Since said magnet 86 on thatside has not been energized, the circuit will pass from the strip l91 through the pin 194, strip 93, and wire 105 to the battery 104.l The current through this circuit will energize the magnet 76 for the units-wheel and actuate the lever 73 and permit the units-wheel to be rotated one notch or one number by the spring 68. The energization of the magnets 76 and 86 through the two circuits just described withreference to the units-Wheel is very quick, only while the ypin 46 on the wheel is in contact with the contactl one number.

plate 28 during the movement of said wheel 45 but the operation is sufficiently long to effect the movement of the units-wheel As soon as the connection is broken between said pin 46 on wheel 45 and the plate 28 the armatures 88 and 77 will be released and returned to their normal position.

Considering the circuits with reference to the operation of the tens-wheel, when the contact-pin 47 on the wheel 45 engages the left-hand plate 28 (shown in Fig. 1) the relaycircuit passes from battery 113 over wires 111 through relay B for the .tens-wheel, wire 31, and magnet 286 to contact-plate 28, wheel 45, wire 245, to ground at 246 and from ground 115 over wire'1l4 to battery 113. This energizes said magnet 86 in relay B and actuates its armature, moves the middle strip 93 out of contact with the lower strip 91 and into contact with the upper strips 95.

The circuit for causingthe actuation of the tens-wheel is as follows: The circ".` it passes from the battery 104 throigh the wire 105 to the middle contact-strip 93 in relay B for the tens-wheel, thence'back through the strip 95, wire 107, magnet 76 for the tens-Wheel', wire l 100 to the lower'contactstrip 91 in the relay on the units-wheel side of the device. Since themagnet of that relay is dead, it will pass through pin 94, contact-strip 93, and wire 103 back to the battery 104. This energizes the magnet for the tens-wheel and causes its operationin the manner heretofore described as to the units-wheel.

The hundreds-wheel is operated as follows: When one of the contact-pins 48 on the wheel 45 engages the two contact-plates 28, there is a ground-circuit established over the portion the units-wheel and tens-wheel for energizing the magnets 86 of both relays A and B-that is, current Hows from battery 113 over wires 111 and 112 through both relays, over wires 30 and 31 through both plates 28 and wheel 45 to the ground. The effect is to energize both of said relays and move both of the middle contact-strips 93 away from the lower contact-strips 91 and into engagement with the upper contact-strips 95. Then the current for causing the actuation of the hundreds-wheel is as follows: Beginning with battery 104, the circuit passes through the wire 105 to the middle contact-strip l93 of relay B to the strip 95 and out through the wire 117 to the magnet 76 for the hundredswheel, and from said magnet through the wires 116 to strips 95 and 93 in the relay A and Wire 103 back to the battery 104. This circuit is followed because the lower strips 91 in both relays are out of the circuit. Therefore from this description it is clear that as the' contact-pins on the wheel 45 close the circuits the indicating-wheels are actuated one notch or number until the last of said pins is moved from the contact-plates 28. Then the indicating-wheels will remain in their actuated position, disclosing the number of the sending-box until the operator at headquarters returns the indicating-wheels for actuating the lever 80. Anylnumber of sending-boxes may be employed in series with intermediate wires 110 between the boxes rrnning from the left-hand contactright-hand contact-plate 28-(shown in Fig. 2) of the next box. When only one call-box is used, the wires 30 and 31 are connected directly, as shown in Fig. l.

The mechanism herein shown is provided with three indicating-wheels. Where, however, two indicating-wheels will suflice-as, for example, where the number of call-boxes does not exceed ninety-nine-the construction and arrangement is the same as herein shown and described with the omission of the hundreds-wheel and the means for driving and controlling it, incla` ding the extra wiring for that circuit which has been described. In such case the wide contact-pins 48 on the wheel 45 in the call-box should be omitted.

A bell-signal or annunciator may be conof the two circuits described with reference to plate (shown in Fig. 1) of one box to the nected with this apparatus as follows: A dis-k to the aim 124 on thepost ssb d them to zero.

Ations 1s normal.

120 1s secured on the hub of the ratchetl Wheel 67, as shown in Fig. 8, with the notch l or recess 121 -in the periphery thereof. l contact-spring 122 has a pin adapted to en- ,l gage the periphery of said disk. lt is mountl ed'on the insulation-block 123, that is secured 65 at tne rght- I hand side of the machlne, as seen in Fig. 8. 1 is spring-contact 122 is so mounted that it will not engage the disk 120 at the recess 121. Then, as seen in Fig. Q the wire 224 leads from said spring-contact to the bell 125 and wire 126 to battery 28,8 and over wire 226 to the frame and supplies current for th'e bell. Therefore after the units-wheel has been started by a call the circuit between the disk 120 and spring-contact 122 will be and the bell will ringy until the numberingl-signal therefore will continue until the operator has come to the device, seen the `numbers on the wheels, and has returned the foregoing apparatus To there may also be added means for indicating Whether any of the lines or circuits are injured or broken. To accomplish that', we place the relay 286 in the line or wire from the call-box. Here it is in line 31, and a/ closed battery 284 is in line 30. The battery 284 is too weak to energize relays A and B through the resistance, so said relays are not energized except upon the operation of the l highly wound, so that it will be constantly energized when the circuit between the call and receiving sta- Its armature then is normally held in contact with the magnet so as to maintain an additional bell-circuit nory mally open, as shown in diagram in Fig. 13. i This additional bell-circuit consists of a wire l 287 running to the open battery 288 and a wire 126 to the bell, wire 290 from the bell to a terminal that maybe engag .d by tne armature of the relay 286 when'the current ceases to pass through the magnet -in said relay 286. This feature of the construction therefore l operates as follows: When the circuit includl ing the call or receiving stations is broken by accident to the wire or otherwise, there will be no current to energize the magnets 286, and then the additional bell-circuit will be closed and the bell will ring and indicate at the receiving-station that the line is out of order. When the line is in good order and the device is operating, as heretofore explained, g this additional bell-circuit will be broken and the bell will not be rung by it. I

What 'we claim as our invention, and desire to secure by Letters Patent, is

1. In an electrical indicator, a grounded receiving-station with a i' tors, a grounded call-station, a connecting said stations and connected pair of lines f with 1 l at the call-station for I grounded, a pair of lines at the receiving-station; means at the receiving-station connected with each line for controlling the. operation of an indicator, and a single means at the'call-station for grounding said lines that automatically ground them a predetermined number of times but grounds only one wire at a time.

2. In an electrical indicator, a grounded receiving-station with a plurality of indicators, a4 grounded call-station, a pair of lines each other said lines, manually-actuated means that 8o temporarily disconnects said lines, and means at the call-station for grounding said lines during the operation of said disconnecting means that automatically rounds them. `a predetermined number o times but grounds only one Wire ata time.

3. In anelectrical indicator, a grounded receiving-station with a plurality of indicators, a grounded call-station, a pair of lines means at the call-station for normally maintaining a connection between said lines, manually-actuated means fortemporarily re- 9 5 moving said connection from between said lines,.means at the call-station for connecting said lines one at a time with the ground during the operation of said disconnecting lmeans, and a spring for returning said conroo different series being out of line with each other transversely ofthe Wheel, and means for operating said wheel.

In an electrical indicator, a grounded receiving-station with a plurality of indicators, a series of call-stations each of which is connecting said reizo ceiving and call stations in series and connected with each other at the receiving-station, means at the receiving-station connected with each line for controlling the operation of an indicator, means at each call-sta- 12 5 tion for connecting said lines one at a time with the ground, and means at each call-station for normally maintaining a connection between sald lines.

In an electrical indicator, a grounded 13o receiving-station with a plurality of independent indicators, va series of call-stations each of which is grounded, a pair of lines connecting said receiving and call stations in series, means at the receiving-station connected with each line Jfor controlling the operation of an indicator, and means at the callstation for grounding said lines one or both at atime for a certain number of times and in a certain order.

7. In an electricalindicator, a grounded receiving-station with three indicators, a grounded call-station, a pair cilines connecting the two stations, means at the receivingstation connected with each line for controlling the operation of two indicators, a connection at the receiving-station with both lines for controlling the operation of the-third indicator, and means at the call-station for grounding both lines simultaneouslyor one at a time as desired.

8. In an electrical indicator, a grounded receiving-station with three indicators, a grounded call-station, a pair of lines connecting the two stations,two relays at the receiving-station, one connected with each line for controlling the operation of an indicator', a connection between said relays so Athat both relays will be operated for controlling the o peration of the third indicator, and means at the call-station for grounding said lines simultaneously or one at a time as desired.

9. In an electrical indicator, a grounded receiving-station with three indicators, a grounded call-station, a pair of lines connecting the two stations, means at the receivingstation connected witheach line for controlling the operation of an indicator, a connection at the receiving-station with both lines for controlling the operation of a third indicator, two contact-plates in the call-station l connected respectively with said lines, al

wheel with three serieslof contact-pins, two series of pins adapted to engage respectively said contact-plates, and a tli'ird series adapty ed to engage both contact-plates, and means for actuating said wheel.

1Q. .In an electrical indicator, a grounded receiving-station with three independent indicators, a grounded call-station, a pair of lmes connecting said stations, means at the receiving-station connected with each line for controlling the operation of an indicator,

a connection between the lines at the receiving-station with a battery in it for loperating the third indicator, and a single means at the call-station for grounding said lines one at a time for actuating two indicators and connecting said lines for actuating the third indicator.

11. In an electrical indicator, a grounded receiving-station with three independent indicators, a grounded call-station, a pair of lines connecting said stations, means at the receiving-station connected with each line for controlling the operation of two indicators, a connection between the lines at the receiving-station with a battery in it for operati-ng thethird indicator, and means at the call-'station Jfor grounding said lines one at a time for actuating two indicators and connecting-and grounding said lines for actuating -the third indicator and predetermining the number of times and the order in which the lines are grounded and connected.

In witness whereof we have hereunto affixed our signatures in the presence of the witnesses herein named.

JESSE SUMMERS. JOHN J. BERRY.

itnessesz HELEN B. MCCORD, NELLIE ALLEMONG.

Images