Ringing machine

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Ingenium, 1968.0476.001
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OBJECT TYPE: MOTOR/GENERATOR
DATE: 1939
ARTIFACT NUMBER: 1968.0476.001

MANUFACTURER: D.M.R.
MODEL: Unknown
LOCATION: London, England

More Information

General Information

Serial #: 5061
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: STEEL CASE/ LAMINATED STEEL ROTOR WITH COPPER MAGNET WIRE WINDINGS/ COPPER COMMUTATOR AND SLIP RINGS/ CARBON BRUSHES/ COPPER AND PLASTIC BRUSH HOLDERS/ STEEL SPRINGS/ GEAR DRIVEN INTERRUPTOR INCLUDES STEEL SHAFT WITH BAKELITE CAMS, AND BRASS CONTACT SPRING ASSEMBLIES AND CONTACT MATERIAL

Dimensions

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

Length: N/A
Width: N/A
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

AKA: DMR
Country: England
State/Province: Unknown
City: London

Context

Country: Worldwide
State/Province: Unknown
Period: 1940-1950
Canada: Unknown
Function: PROVIDES 20 HZ RINGING CURRENT, DIAL TONE AND BUSY TONE. THE INTERRUPTORS PROVIDE THE RINGING AND BUSY SIGNALS PATTERNS AND DISTRIBUTION TO ALTERNATE BANKS OF SWITCHES
Technical: Unknown
Area Notes: Unknown

Details

Markings: MFG'S PLATE: 'D.M.R./ WEMBLEY PARK/ SERIAL NO. 5061/ INPUT. OUTPUT./ VOLTS 47/51 73 VOLTS./ AMPS 1.1 0.2 AMPS./ SPEED 1000 R.P.M./ BRUSH CODE./ BRUSH PRESS. OZS. 2-3/ CONTINUOUS RATING./ B.S.1.170-1939.'
Missing: INTERRUPTOR PLASTIC SHIELD DAMAGED
Finish: CASE AND INTERRUPTOR BRACKET EQUIPMENT GREEN/ BAKELITE PARTS, BROWN/ ALL OTHERCOMPONENTS NATURAL COLOUR
Decoration: N/A

CITE THIS OBJECT

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

D.M.R., Ringing machine, circa 1939, Artifact no. 1968.0476, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1968.0476.001/

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