About: Lean's Engine Reporter

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Lean's Engine Reporter was founded in 1810 to publicize the performances of different Cornish engines used for mine pumping in Cornwall. The first Reporter of Duty was . The Reporter, published monthly, gave, for each engine and its pumps, the number of strokes (measured by a counter kept in a locked box), and the amount of coal used. From this, and sizes of the pumps, the engine duty was found: this was the number of pounds of water raised one foot by a bushel of coal. Between 1810 and 1840 this reporting, and competition between engineers, raised the duty from around 20 million to 90 million pounds, a much higher efficiency than found in engines elsewhere at the same time. The improvements were an increase in the steam pressure used, full expansion to low pressure, and insulation to avoi

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rdf:type	yago:WikicatCornishEngines yago:WikicatSteamEngines yago:Artifact100021939 yago:Device103183080 yago:Engine103287733 yago:External-combustionEngine103307573 yago:HeatEngine103507963 yago:Instrumentality103575240 yago:Machine103699975 yago:Motor103789946 yago:Object100002684 yago:PhysicalEntity100001930 yago:SteamEngine104309049 yago:Whole100003553
rdfs:label	Lean's Engine Reporter (en)
rdfs:comment	Lean's Engine Reporter was founded in 1810 to publicize the performances of different Cornish engines used for mine pumping in Cornwall. The first Reporter of Duty was . The Reporter, published monthly, gave, for each engine and its pumps, the number of strokes (measured by a counter kept in a locked box), and the amount of coal used. From this, and sizes of the pumps, the engine duty was found: this was the number of pounds of water raised one foot by a bushel of coal. Between 1810 and 1840 this reporting, and competition between engineers, raised the duty from around 20 million to 90 million pounds, a much higher efficiency than found in engines elsewhere at the same time. The improvements were an increase in the steam pressure used, full expansion to low pressure, and insulation to avoi (en)
dcterms:subject	Steam engines Cornish engines
Wikipage page ID	6274513 (xsd:integer)
Wikipage revision ID	1083722805 (xsd:integer)
Link from a Wikipage to another Wikipage	Cornwall Cornish engine Steam engines Trevithick Society Truro Efficient energy use Free software Mining Cornish engines dbr:Joel_Lean
sameAs	Lean's Engine Reporter Lean's Engine Reporter Lean's Engine Reporter Lean's Engine Reporter
dbp:wikiPageUsesTemplate	dbt:Cite_book dbt:Italic_title dbt:Portal dbt:Reflist dbt:Short_description dbt:Use_dmy_dates dbt:Publish-stub dbt:Steam_engine_configurations
has abstract	Lean's Engine Reporter was founded in 1810 to publicize the performances of different Cornish engines used for mine pumping in Cornwall. The first Reporter of Duty was . The Reporter, published monthly, gave, for each engine and its pumps, the number of strokes (measured by a counter kept in a locked box), and the amount of coal used. From this, and sizes of the pumps, the engine duty was found: this was the number of pounds of water raised one foot by a bushel of coal. Between 1810 and 1840 this reporting, and competition between engineers, raised the duty from around 20 million to 90 million pounds, a much higher efficiency than found in engines elsewhere at the same time. The improvements were an increase in the steam pressure used, full expansion to low pressure, and insulation to avoid heat loss. The Reporter continued to be published by various members of Lean's family until 1904. This open competition between engineers has been suggested as an early precursor of the free software movement, in which people engaged in collaborative development of technical knowledge. (en)
prov:wasDerivedFrom	wikipedia-en:Lean's_Engine_Reporter?oldid=1083722805&ns=0
page length (characters) of wiki page	2071 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Lean's_Engine_Reporter
is Link from a Wikipage to another Wikipage of	Cornish engine Steam engine Trevithick Society Lean's Reporter
is Wikipage redirect of	Lean's Reporter
is foaf:primaryTopic of	wikipedia-en:Lean's_Engine_Reporter

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