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Daria Gorbaczewska holds a Bachelor's degree in conservation of technical heritage and modern materials. It is a very specific specialization who aims to broaden the view of cultural history through everyday and industrial objects. Her sociology studies allow her to place each historical object in its social and cultural context.
Daria Gorbaczewska holds a Bachelor's degree in conservation of technical heritage and modern materials. It is a very specific specialization who aims to broaden the view of cultural history through everyday and industrial objects. Her sociology studies allow her to place each historical object in its social and cultural context.
Technical Heritage includes mostly composite objects, made of many different materials which pose risks of interaction between them. It may be unsafe for the future conservation of an object and should be treated by an specialized professional from a point of view of physico-chemical behaviour of materials and from a point of view of object's environment.
Technical Heritage includes mostly composite objects, made of many different materials which pose risks of interaction between them. It may be unsafe for the future conservation of an object and should be treated by an specialized professional from a point of view of physico-chemical behaviour of materials and from a point of view of object's environment.
Medical grinding and mixing machine, AEG, about 1900, Deutsches Technikmuseum, Berlin
Medical grinding and mixing machine, AEG, about 1900, Deutsches Technikmuseum, Berlin
The condition survey and conservation dealt with an electric motor, as well as switches, sockets and electric cables connected to a heating devise of the machine. This machine was used in an independent medecines production in pharmacies and was probably used for only 10 years. This was related to the advancing industrialization, which brought mass production of pharmaceuticals. As a result, the machine was abandoned in a basement and given to the Deutsches Technikmuseum in 2011.
The period of use of the object was short, but it clearly shows the historically interesting transition from mechanical to electric power drive. It also shows the transition from in-house production to mass production.
Most of the changes in the materials occurred during the neglect period, after 1950. The materials completely lost their flexibility and hypothetical reusability.
The object was brought to the condition state from the use phase, so that it can show its interesting history uniformly. However, most traces of age were conserved to conserve the object's authenticity.
Telephone OB05, Gross & Graf, after 1905, Deutsches Technikmuseum, Berlin
Telephone OB05, Gross & Graf, after 1905, Deutsches Technikmuseum, Berlin
The object is considered as the standard telephone of the German Reichspost from the time before the introduction of the automatic dial exchange and was manufactured between 1905 and 1911 in Berlin by Gross & Graf. This telephone shaped the development and progress of means of communication in Germany.
This is an object that represents at least two periods of neglect, during which there was degradation of some materials. During the turbulence of the twentieth century was also carried out at least one old restoration and "freshening" of this phone.
Our research focused on historical plastics and on the search for causes of the current state of conservation by its chronological identification. The scientific identifications focused mainly on the cellulose acetate of the mouthpiece as well as on the paint layer of the telephone case.
The main goal of the conservation treatment was to restore the technical and historical legibility of this telephone by reducing the visibility of previous reparations.
Plug socket, Wittler bread trolley, 1942, Deutsches Technikmuseum, Berlin
Plug socket, Wittler bread trolley, 1942, Deutsches Technikmuseum, Berlin
Through the plug socket, the electrical trolley for bread transport during the second world war could be connected to electricity to be charged and ready to drive.
The outer shell of the plug socket is made of steel, and inside there are organic insulating materials, such as Bakelite.
The main purpose of the conservation treatment was to mitigate the strong intrinsic value of the material changes caused by neglect.
The coarse, grainy, "neglected" impression has been weakened so that the object as a whole appears less impaired and disturbing.
On the larger plane of the object as a part of the trolley, care has been taken to create an homogeneous image.
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