Relay
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1997.0180.001
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- OBJECT TYPE
- POLAR/250-250 OHM/SPDT
- DATE
- 1890
- ARTIFACT NUMBER
- 1997.0180.001
- MANUFACTURER
- ELLIOTT BROS. LTD.
- MODEL
- Unknown
- LOCATION
- London, England
More Information
General Information
- Serial #
- 19712
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- BRASS CASE & COMPONENT BASE, STEEL MAGNET, INSULATED COPPER WIREE WINDINGS, BRASS CONTACT & PIVOT ASSEMBLIES, SILVER CONTACTS, BRASS BIAS ADJUSTING KNOB, BRASS THUMB NUT TERMINALS, MISC. BRASS & STEEL HARDWARE. RELAY IS MOUNTED ON A WOODEN BASE.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- N/A
- Width
- 15.2 cm
- Height
- 10.5 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Telegraphy
- Sub-Category
- N/A
Manufacturer
- AKA
- ELLIOTT
- Country
- England
- State/Province
- Unknown
- City
- London
Context
- Country
- Worldwide
- State/Province
- Unknown
- Period
- 1890 -1920
- Canada
-
Unknown - Function
-
USED TO CONVERT POSITIVE AND NEGATIVE PULSES TO ALTERNATINVE CONTACT CLOSURES. THE CONTACT CLOSURE REMAINS CLOSED ON THE "M" OR "S" POLE UNTIL A REVERSE "NEGATIVE" OR "POSITIVE" PULSE IS RECEIVED. - Technical
-
AN EXAMPLE OF EARLY POLAR RELAY DESIGN. - Area Notes
-
Unknown
Details
- Markings
- STAMPED INTO MOUNTING PLATE: 'No 19712/ ELLIOTT BROTHERS (LONDON) LTD'/ LABELS AROUND THUMB NUTS: 'T/S/D/D/U/U/M'
- Missing
- APPEARS COMPLETE
- Finish
- WOOD STAINED AND VARNISHED/ METAL LACQUERED/ UNCOLOURED GLASS
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
ELLIOTT BROS. LTD., Relay, circa 1890, Artifact no. 1997.0180, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingenium.ca/en/id/1997.0180.001/
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