This dissertation analyses some morphologicaltransformations in kitchen equipment which was used for conserving and preparing food in middle class homes in Rio de Ja-neiro between the decades of the 1930 s and 60 s. To do this analysis, the author considered the social, economic, political and cultural con-texts and verified these influences on the types of transformations ob-served. From a historical perspec-tive, the most relevant factors con-tributing to the makeup of Brazilian society at the time are pointed out, with emphasis on urban society in Rio de Janeiro and the changes this group underwent. The focus is on cultural factors, mostly emphasizing the culture of material items. Inter-national influences and their conse-quences on the characteristics of equipment produced in Brazil are observed. By way of advertisement from the time, photographs, user manuals and the descriptions made by some theoriticians, the author verifies and interprets the transfor-mations and their relationship to the context in which they were made.