Model of a Double Capstan

...; transferred from the Ministerie van Marine (Department of the Navy), The Hague, to the museum, 1883

ObjectNumber: NG-MC-1049

Model of a double capstan in a wooden frame with three levels.

Both barrels have holes for ten bars and have no whelps. The upper barrel can be opened in four places in order to expose the gear train, consisting of horizontal toothed wheels and a pair of inclined toothed wheels, which transfer the revolutions of the upper barrel to the lower barrel at a ratio of 11:1 and in the opposite direction. There is a hole for a key just below the head of the upper barrel, but the key is missing and the purpose of the keyhole could not be determined. The lower barrel has a toothed circle on the trundle head, with a pawl that hangs from the deck head to prevent it from turning back. Mounted in the sides of the frame are a number of axles for sheaves, probably for demonstration purposes.

Scale (estimate) 1:5.

J.M. Obreen et al., handwritten inventory list for items 944 to 1431, 1884, manuscript in HNA 476 RMA, inv. no. 1089, no. 1049

J. van der Vliet, 2016, 'anonymous, Model of a Double Capstan, Netherlands, c. 1860', in J. van der Vliet and A. Lemmers (eds.), Navy Models in the Rijksmuseum, online coll. cat. Amsterdam: hdl.handle.net/10934/RM0001.COLLECT.244864