US840068A

US840068A - Panel-board for electrical distribution.

Info

Publication number: US840068A
Application number: US27096005D
Authority: US
Inventors: Edward N Lake
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-07-24
Filing date: 1905-07-24
Publication date: 1907-01-01
Anticipated expiration: 1924-01-01

Description

No. 840,068. PATENTED JAN. 1 1907.

E. N. LAKE. PANEL BOARD FOR ELECTRICAL DISTRIBUTION.

APPLICATION FILED JULY 24,1905.

2 SHEETSSHEET 1.

ElwarcZNLake,

wt in asses No. 840,068. PATENTED JAN. 1, 1907.

E. N. LAKE. PANEL BOARD FOR-ELECTRICAL DISTRIBUTION.

APPLICATION FILED JULY 24,1905.

2 SHEETS-SHEET 2 EdwaPdNzai-e wifnesseg: IIEFe/MO/ W l i'ornegr EDWARD N. I LAKE; OF CHICAGO, ILLlh'OlS.

PANEL-BOARD FOR ELECTRiCAL DlSTRlBUTION- Specification of Letters Patent.

Patented Jan. 1, 18C? Application filed July 24,1905. Serial No. 270,960.

To (all whom it may; concern:

Be it known that I, EDWARD N. LAKE, a' citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in Panel-Boards for Electrical Distribution, of which the following is an exact and concise-description, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to panel-boards such as are used in the distribution of current for electric lighting and other purposes in buildings where many local circuits are fed from main food or power circuits, and particularly to panel-boards for such instances where meters are installed to record the amount of on ergy consumed by each of the local loadcircuits.

My objects are to provide a sightly and conven ant means for connecting such local load-circuits to the main power-circuits, to provide for the grouping of any desired local load-circuits together as a single load unit for measurement of the energy OODSUH'IGd by them, to provide means for connecting meters to the power-mains and to such load units as may be desired, and to provide separate means for access to the switches and l'uses forming essential parts 01 such a panelboard and to the meters and their connectingcircuits.

Two figures accompany this specification, in which Figure 2 shows a front elevation of my panel-board with the front portion, consisting of doors and their S111)})01't111g-f1&11108, removed; and Fig. 1 shows a section of Fig. 2 on the line A A.

The construction of the panel-board is as follows:

A main case or body contains all of the anel-board apparatus and the meters and is provided with a front portion 11, iurnishing mounting for three doors 12 12 and 13. These three doors are provided witlr separate locks. 'lhc locks giving entrance to the meters and to the meter connections are similar and operable by the same or similar signed exposed portion of the key 15 in door 13. The object to be accomplished is to per mit access through door 13 to classes of WOI'lC men which it is desired to exclude from the meters and terminals accessible only through

doors

12 and 12, as by access to the terminals of the meter-circuits a falsification of the records could be efl'ected, to the end oi do frauding the parties who are operating'the power system and charging the consumers according to the meter indications. tire front of the case is held in place by bolts, as16 and 16, the bolts themselves being socessible only by use of keys of the style of Ports for power-circuits and. local load circuits may be provided, as is usual in all simi- The enlar constructions, through the back or sides of the case. 10.

'Within the case 10 a slab of insulating ma 13, and similar slabs are placed at 19 and to close the top and bottom of the space,

thus effectually preventing access through door 13 to the meters and connections pro tected by

doors

12 and 12 and also providing" additional protection against dust for the apparatus mounted on the face of the slab 17. Meters 80 S1 S2 83 8 1, &c., are mounted in the'case in the side spaces accessible through the

doors

12 and 12, the meters shown in the figures being of the wattmeter type, requiring the connection of the pres sure-circuit in multiple and of the load or service circuit in series. These meters may be mounted in the space assigned for them in any manner required by the design of the meter. The side slabs or

ribs

18 and 18 are so placed upon the main slab 17 that the edges of the, main slab project beyond the 'side slabs and into the spaces occupied by the meters to a sullieient distance to permit the mounting in the meter-conipa-rtment ol terminals, as 20 21 22 23 2-1 25 26 28 and 30 31 32 33 34 for the connection of circuit- Wires.

On the face of the slab 17 are mounted, first, terminals 40, adaptedto connect with the main power leads or feed-Wires, bringing IIO ' (shown in Fig. l as held single-throw switch,

to the panel-board'the electric current for distribution; second, bus-bars 41 42 43,

at clearance dis- 1 tance above the face of the slab 17 and shown in Fig. 2 as extending practically! throughout the length of the tab 17 third, a main switch 44, adapted to iisolate the busbars from the power-mains fourth, fuses ,45, adapted to isolate the bus-bars from the power-mains; fifth, a pressure-bus 46, con- ,nected with the bus-bar 41 and extending beyond the

side slabs

18 and 18 to terminals, as and 30, in the meter-compartments; l sixth, a plurality of load-circuit or servicei circuit switches, as 50,- each a double-pole as shown, with one pole I a fuse to a conducting I connected through with the bus-bar 41, as inlink 60, connected dicated, by the screw 60, and with the re ing out through one of 4 meters, indicated in t maining poleconnected through a fuse to a terminal block 50 which is connected by a conducting-strap 50 on the back of the slab 17 to the terminal. 28, associated by location with the switch 50, but located on the face of the slab 17 on that edge which projects into the meter-compartn'xent. Adjacent to the two poles of the switch 50 at that end of the blades not connected as above the holes are drilled through the slab 17 and are adapted to permit load-circuit wires to be brought through the slab 17 to be connected to the free terminals of the switch 50, located adjacent to the holes. A circuit thus will be formed from the bus-bar 41 through connection indicated by screw'60, conducting-link 60, fuse, one side of switch 50, load-wire passholes 50, through the associated with that to the. anel-board external load element k loadcircuit, returning over the associated load-wire lea ing through the remaining hole 50. to the remaining side of the switch 50, thence through fuse to termined-50, and through conducting-strap 50 to terminal 28 in the meter-compartment, thus constituting the terminal, 28 a load-terminal or service-terminal for meter-switching. Seventh, a pluralit of conductingbars, as 61 62, connected with bus-bars 42 and. 43 l and passing through side slabs 18 to terminals, l as 31 and 32,. in the meter compartments. By "dead-circuit or service-circui in the foregoing is meant that element of electrical I power" distribution which comprises the power-consuming branch from the powermainsfor bus-bars and which includes the power-consuming elements, as lamps or metors and the Wires leading thereto.

In the meter-com artments are located i re drawings as being of the watt/meter type, requiring one of the inj ternal circuits of the meter to be connected I in series with the load-circuit whose conl sum tion of energy is to be measured and l anot er internal circuit of the meter to be connected directly across the power-circuit emcee furnishing the energy consumed. These two internal circuits of the meter may have a common terminal, as indicated in the middle terminal of the meters shown, the righthand terminal on the drawings being assiuned to be the pressure-terminal, requirin the full voltage of the power-circuit to be aced l on the middle and right-hand terminals, and

the left-hand terminal of the meters, as shown, being assumed to be the series tor= minal, requiring the circuit'whose consumption of energy is to be measured to be carried in series through the middle and left-hand terminals of the meter. The right-hand terminals of all the meters may be connected to

terminal

30 or 30, as shown in Fig. 2, and thus connected to bus-bar 41, while the middle terminals of all meters require to be con nected to one of the remaining bus-bars di rectly to bring to the meter the full difl'erence of potential existing between the bus-bars. The remaining or left-hand terminal of the meter requires to be connected through the load-circuit to the busbar 41. In my design of panel-board the connection for the middle. terminals of the meters may be obtained through the terminals 31 32 33 34 35, &c., by which it is seen that any meter may be connected to either of the bus-bars 42 43', it being noted also that the terminals 31 32, &c., are so slab 17 as to be conveniently accessible to the different meters in their probable locations, so as to require a minimum connecting-wire where no arbitrary circuits are required. Thus meter 83 may have its middle terminal connected to meter-terminal 36, and thereby to bus-bar 43; but preferably meter 83 should be connected to the adjacent meterterminal 34, and thereby to bus-bar 42. In my design of panel-board the connection for the left-hand terminal of the meter may beobtained through the terminals 20 21 22 23 24 25, &c., it, being shown in Fig. 2 that in this detail the lett-hand terminal of any meter may be connected to any load-circuit terminal, as 20 21, &c., or to a plurality of such terminals, thus any load-circui t or pacing any desired loadcircuits upon the same meter. In the drawings meter 81 is shown measuring energy given to a load-circuit through switch 52. Meter switches 53, 50, and 54. Also terminal 24 is sh'ownconnected directly to terminal 33, thus giving service through switch with out measuring the amount of energy consumed. Meter 82 is shown idle. To con1- plete the circuit above traced from bus-bar 4]. to terminal 28, passes from terminal 28, over jumper-wii e0, through meter 80, andover Wire 71 to terminal 32, thence by bar 62 to bus-bar 42.

I do not wish to limit myself in all respects to the details herein shown, as many variadistributed along the edge of thelplacing any meter upon serves circuits connected with tiens may be made Without departing from the spirit of my invention.

' What 1 claim is' i 1. in a panel-board for electric distribution, the combination of a mounting-slab l'or switches and fuses, terminals for load-circuits upon said slab, and terminals for nietors upon said slab and interspersed with said terminals for load-circuits, substantially as described.

2. In a panel-board for electrical distribution, the combination of a mounting-slab for switches and fuses, terminals for load-circuits upon said slab, each load-circuit ter minal being associated with a switch, and terminals for meter-circuits upon said slab, said load-circuit terminals and said metereircuit terminals being interspersed, sui stantially as described.

3. In a panel-board for electrical distribu ii tion, the combination of a mounting-slab for switches and fuses; bus-bars on said slab; terminals on said slab; circuit-branches ex tending from one of said bus-bars through switches and'fuses to load-terniinals on said slab, other circuit branches extending from one of said bus-bars directly'to terminals on said slab; said direct circuit-branch terminals being interspersed with said circnit-l'iraneh terminals with associated switches, substantially as described.

tion, the co I terminals b in a panebboard for ibination of a mount bus-bars on said slab; switch s on a plurality of terminals on said io- 5 caled in groups at or near the e 1 slab; branch circuits from one on bars through said switches to some or spa terminals; and branch circuits hem each of said bus-bars directly to others of said terso minals, substantially as described.

a plurality of terminals on said sla cated in groups or near the ed h slab; branch circuits from one el' bars through said swit it bus-bars direr v meters located adjace it to and (conductors connecting; tors with te :ninals of" both tially as described.

Signed bv me U State of :hnois, inthc r n esses.

county or Cook,

nee oi (fitness s