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Barker lever

pneumatic device for decreasing the resistance of the keys of the organ keyboards.
Place invention Q808267
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Barker lever

Summary

Barker lever is an invention[1]. It draws 21 Wikipedia views per month (invention category, ranking #31 of 40).[2]

Key Facts

  • Barker lever is credited with the discovery of Charles Spackmann Barker[3].
  • Barker lever's instance of is recorded as invention[4].
  • Barker lever's instance of is recorded as machine[5].
  • Barker lever's Commons category is recorded as Barker lever (organ)[6].
  • Barker lever's time of discovery or invention is recorded as +1839-00-00T00:00:00Z[7].
  • Barker lever's Freebase ID is recorded as /m/02z4851[8].
  • Barker lever's product or material produced is recorded as work[9].
  • Barker lever's Encyclopædia Britannica Online ID is recorded as art/Barker-lever[10].

Body

Designation and Status

Recorded instance of include invention[4] and machine[5].

Why It Matters

Barker lever draws 21 Wikipedia views per month (invention category, ranking #31 of 40).[2] It has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[11] It is known by 5 alternative names across languages and contexts.[12]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [5] ↑ . wikidata.org.
  3. [3] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . Freebase Data Dumps. wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [11] ↑ . Wikidata sitelinks. wikidata.org.
  3. [12] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Barker lever. Retrieved May 3, 2026, from https://4ort.xyz/entity/barker-lever
MLA “Barker lever.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/barker-lever.
BibTeX @misc{4ortxyz_barker-lever_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Barker lever}}, year = {2026}, url = {https://4ort.xyz/entity/barker-lever}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Barker lever — https://4ort.xyz/entity/barker-lever (retrieved 2026-05-03)

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