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Ingenium, 1971.0695.001
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OBJECT TYPE: PBX/MAGNETO/SWITCH/10-LINE
DATE: 1930
ARTIFACT NUMBER: 1971.0695.001

MANUFACTURER: Northern Electric
MODEL: 505
LOCATION: Montréal, Québec, Canada

More Information

General Information

Serial #: T45705
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: WOODEN CASE; METAL (INCLUDING BRASS)SWITCHES & DROPS; SYNTHETIC COVERING OVER SWITCHES; METAL & SYNTHETIC COMPONENT PARTS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 46.2 cm
Width: 29.0 cm
Height: 36.2 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Telephony
Sub-Category: N/A

Manufacturer

AKA: Northern Electric
Country: Canada
State/Province: Québec
City: Montréal

Context

Country: Canada
State/Province: Unknown
Period: THIS TYPE OF SWITCHBOARD USED BETWEEN C.1930-1940.
Canada: DESIGNED & BUILT BY NORTHERN ELECTRIC IN CANADA
Function: TO PROVIDE A CENTRALIZED SWITCHING POINT FOR 10 INDIVIDUAL TELEPHONE LINES.
Technical: EARLIEST FORM OF TELEPHONE SWITCHING & SIGNALLING EQ. SIGNALLING WAS BY 'DROPS' IE) TELEPHONE RINGING CURRENT WOULD VIBRATE THE LATCHING HOOK, CAUSING A HINGED FLAP TO DROP. THE OPERATOR WOULD MAKE THE REQUESTED CONNECTION AND RING ON THE CIRCUIT. THE USER HAD TO RING OFF, USUALLY BY CRANKING THE TELEPHONE MAGNETO TO INDICATE THE CALL HAD BEEN COMPLETED.
Area Notes: Unknown

Details

Markings: PAPER LABEL INSIDE CABINET READS: 'Northern Electric/ COMPANY LIMITED/ PLEASE DO NOT REMOVE/ THIS TAG/ IN CASE OF COMPLAINT QUOTE/ THIS NUMBER/ D.R. NO. T 45705/ DENNISON'S CANADA'/ '12' STAMPED INTO INSIDE EDGE OF FRONT PANEL/ 'T-74023 G-3' STAMPED IN BLACK INK ON CHASSIS FRAME INSIDE CABINET. SWITCH PATHS ARE LABELLED 'A' THROUGH 'E'; RINGING KEYS ARE STENCILLED 'R'. LINES ARE LABELLED '1' THROUGH '10' & '0P'/ [NOW ILLEGIBLE] NUMBER STENCILLED IN WHITE ON CABINET TOP/ 'HAND' & 'KEY' STENCILLED AROUND CURRENT SWITCH. CANADIAN ARMED FORCES SYMBOL STAMPED IN BLACK INK ON CABINET BACK/ CIRCUIT WIRING DIAGRAM GLUED INSIDE CABINET TOP
Missing: MAGNETO CRANK/ SYNTHETIC HANDLE OF RINGING CURRENT SWITCH/ OPERATOR'S HEADSET
Finish: WOODEN CASE FINISHED WITH MAHOGANY STAIN, AND VARNISHED. RED, WHITE & BLACK PLASTIC 'CAP' COVER SWITCHES.
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Northern Electric, Switchboard, circa 1930, Artifact no. 1971.0695, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1971.0695.001/

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