Investigating five totalizing counters manufactured by the Alphonse Darras company of the CNAM collections in Paris

Julie Schröter; Cyrille Foasso; Ludovic Bellot-Gurlet; Laura Brambilla

doi:10.14568/cp29230

Autores

Julie Schröter Haute Ecole Arc Conservation Restauration, HES-SO University of Applied Sciences and Arts Western Switzerland, Espace de l’Europe 11, 2000 Neuchâtel, Switzerland
Cyrille Foasso Curator, Musée des Arts et Métiers (CNAM), 60 rue Réaumur, 75003 Paris, France https://orcid.org/0000-0003-1567-1379
Ludovic Bellot-Gurlet Sorbonne Université, CNRS, De la Molécule aux Nano-objets: Réactivité, Interactions et Spectroscopies (MONARIS), UMR 8233, 4 place Jussieu, 75005, Paris, France https://orcid.org/0000-0002-7995-6261
Laura Brambilla Haute Ecole Arc Conservation Restauration, HES-SO University of Applied Sciences and Arts Western Switzerland, Espace de l’Europe 11, 2000 Neuchâtel, Switzerland https://orcid.org/0000-0002-7197-6524

DOI:

https://doi.org/10.14568/cp29230

Palavras-chave:

Lacas transparentes, Ligas de cobre, Séculos XIX-XX, Métodos não invasivos, Fluorescência UV, FTIR

Resumo

Este artigo descreve o estudo de cinco contadores totalizadores conservados nas coleções do CNAM (museu do Conservatoire National des Arts et Métiers) em Paris. Estes artefactos fazem parte de um corpus de mais de 40 contadores atribuídos à empresa Darras, fundada pelo engenheiro Alphonse Darras (1860-1936). O estudo desenvolvido no âmbito do projecto LacCA da Haute Ecole Arc, Neuchâtel (Suíça) sobre caracterização de ligas de cobre lacadas, incidiu sobre as diferentes características dos revestimentos dos objetos. As lacas eram frequentemente aplicadas em objetos técnicos com o duplo intuito de proteção contra a corrosão e decoração. Cinco contadores totalizadores com diferentes formas e cores, foram selecionados e examinados através de diferentes técnicas analíticas não invasivas. O estudo comparativo – investigando os processos e os materiais de lacagem – contribui para o estudo histórico destes artefactos.

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