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      content: after design by Robert Hodgson, United Kingdom
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      content: naar ontwerp van Robert Hodgson, Verenigd Koninkrijk
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    content: 'Hodgson's Parabolic Propeller in Holland', Mechanics' Magazine (1848) aug., p. 130-132.
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    content: J.M. Dirkzwager, 'Problemen en oplossingen bij de ontwikkeling van de stoomvaart in Nederland', Erfgoed van industrie en techniek 1 (1992) nr.3, p. 74-90, afb. p. 83.
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    content: J.M. Dirkzwager, 'De introductie van de "waterschroef" in de Nederlandse Marine', Industriële archeologie 3 (1983) nr. 7, p. 80-96.
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    content: John Bourne, A Treatise on the Steam-Engine in its Various Applications to Mines, Mills, Steam Navigation, Railways, and Agriculture, London 1861 [5th ed.], p. 384, afb. 516.
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    content: Bruno Johannes Tideman, Verhandeling over de scheepsbouwkunde als wetenschap, zamengesteld vooral met het oog op het geheel stelselmatig ontwerpen van stoomschepen, voor oorlogs-marine en koopvaardij, 1859, p. 316.
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    content: British Patents, 1844, nr. 10034.
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      content: 556
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id: _:b21
type: Name
content: Model van een tweebladige parabolische schroef
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type: Identifier
content: NG-MC-556
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content: Model of a Two-Blade Parabolic Propeller
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id: https://id.rijksmuseum.nl/2203357
type: Type
classified as:
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notation: instruction model @en
notation: instructiemodel
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type: Dimension
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  notation: diepte
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value: 15
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  notation: breedte
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value: 20.5
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type: Dimension
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  notation: height @en
  notation: hoogte
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value: 26
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id: https://id.rijksmuseum.nl/22021
type: Material
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notation: hout
notation: wood (plant material) @en
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equivalent:
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id: https://id.rijksmuseum.nl/20253812
type: VisualItem

type: LinguisticObject
content: Model van een tweebladige parabolische schroef in een frame op een grondplank. Het drukvlak van de schroefbladen is gebogen in de vorm van een parabool. De schroef kan worden rondgedraaid met een zwengeltje. Het model heeft een spoed van 286 mm, een diameter van 200 mm, de naaf is 75 mm lang en heeft een diameter van 26 mm. Schaal 1:10 (afgeleid).
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type: LinguisticObject
content: label, on the frame: ‘556’ former inventory label
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type: LinguisticObject
content: etiket, op het frame: ‘556’ voormalig inventarisnummer
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type: LinguisticObject
content: height 26 cm x width 20.5 cm x depth 15 cm
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content: hoogte 26 cm x breedte 20,5 cm x diepte 15 cm
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type: LinguisticObject
content: wood
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type: LinguisticObject
content: Hodgson wilde met zijn ontwerp het water in het verlengde van de schroefas naar achteren stuwen, om zo een betere prestatie te verkrijgen. Het is onwaarschijnlijk dat deze schroef in 1847 op de Samarang is beproefd, omdat de verhoudingen niet kloppen met het schroefraam. Het model kan echter gediend hebben om het ontwerp van Hodgson bij de Marine-autoriteiten nader toe te lichten en als zodanig bij de besluitvorming behulpzaam zijn geweest; er werd een parabolische schroef in 1847 op de Samarang beproefd.
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      content: 2013-04-15
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    begin of the begin: 2013-04-15T00:00:00Z
    end of the end: 2013-04-15T23:59:59Z

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content: hout
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id: https://www.rijksmuseum.nl/collection/NG-MC-556/catalogue-entry
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      content: Model of a Two-Blade Parabolic Propeller
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type: LinguisticObject
content: ...; transferred from the Ministerie van Marine (Department of the Navy), The Hague, to the museum, 1883
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