Model of a Ladder

The Hague, The Hague, c. 1850

Object data

wood and brass

length 54 cm × width 6.9 cm

Inscriptions

inscription, on a rung: No 4

Provenance

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

Object number: NG-MC-78

Entry

Only one part of this patent model has been found. It is supposed to have consisted of three parts,¹ of which the upper two would first simultaneously be lifted by hand and then the top part extended with a spindle.

Petrus van der Loo (1806-1864) obtained a five-year patent for his improvements to ladders² in 1850. His model was shown at the Exposition Universelle of 1855 in Paris.³

Literature

Expositions des produits de l’industrie de toutes les nations, 1855. Catalogue officiel, Paris [1855], p. 381; J.M. Obreen, Catalogus der verzameling modellen van het Departement van Marine, The Hague 1858, nos. 76-81; G. Doorman, Het Nederlandsch octrooiwezen en de techniek der 19de eeuw, The Hague 1947, no. 1845, p. 305; A.A. Lemmers, Techniek op schaal. Modellen en het technologiebeleid van de Marine 1725-1885, Amsterdam 1996, pp. 260, 355

Citation

J. van der Vliet, 2016, 'Petrus van der Loo, Model of a Ladder, The Hague, c. 1850', in J. van der Vliet and A. Lemmers (eds.), Navy Models in the Rijksmuseum, online coll. cat. Amsterdam: hdl.handle.net/10934/RM0001.COLLECT.242803

(accessed 10 November 2024 11:28:41).