Relay, signalling
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1970.0493.001
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- OBJECT TYPE
- N/A
- DATE
- 1930
- ARTIFACT NUMBER
- 1970.0493.001
- MANUFACTURER
- KELLOGG
- MODEL
- 150A
- LOCATION
- United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- WOOD BASE/ BRASS (PLATED) BOTTOM PLATE/ STEEL MAIN STRUCTURE & ARMATURE/ BRASS ADJUSTING ASSEMBLY & CONTACT STRIP/ CARDSTOCK BOBBINS/ BOBIN WINDINGS COTTON COVERED COPPER WIRE, ebonite
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 15.3 cm
- Width
- 6.4 cm
- Height
- 5.8 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Telegraphy
- Sub-Category
- N/A
Manufacturer
- AKA
- KELLOGG
- Country
- United States of America
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- 1930-1950
- Canada
-
ORIGINALLY DESIGNED FOR RAILWAY SIGNALLING BUT ADAPTED BY THE DOMINION OBSERVATORY PROBABLY TO REPEAT THE TIME SIGNAL TO SYNCRHONIZE CLOCKS. - Function
-
USED TO REPEAT ELECTRICAL SIGNALS. THIS RELAY WAS DESIGNED TO ACCEPT SIGNALS OF FAIRLY LONG DURATION THUS FILTERING OUT SHORT BURSTS OF NOISE ON THE LINE. IT PROBABLY WAS OPERATED BY BURSTS OF LOW FREQUENCY TONE 2O- TO 200 Hz. - Technical
-
EARLY SPECIALIZED SIGNALLING RELAY. - Area Notes
-
Unknown
Details
- Markings
- STAMPED IN BOTTOM PLATE: '150A'/ MARKED ON BASE: '300W'
- Missing
- CONNECTIONS
- Finish
- VARNISHED BASE/ METAL PLATED-DULL FINISH/ BLACK WINDINGS
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
KELLOGG, Relay, signalling, circa 1930, Artifact no. 1970.0493, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1970.0493.001/
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