Josephine Cochrane's dishwasher
Characters:
Theme: Household appliances
Competencies
Mathematical competence in science, technology and engineering
Personal, social and learning to learn competence
Entrepreneurial Competence
Subjects and year by Educational System
Spain > Technology > 4th ESO > Technological operators
Enunciation
Read the following text about Josephine Cochrane's dishwasher and answer the questions.
Josephine Cochrane's dishwasher was the first industrial dishwasher to sell successfully. The original model was introduced at Chicago's World Exhibition in 1893. It was later on modified and improved, and Cochrane herself patented many of these improvements.
American patent no. 355139 (USPTO).
1.- Look up information online and briefly describe the mechanism used in the first dishwasher invented by Josephine Cochrane and introduced at Chicago's World Exhibition in 1893.
2.- Describe how it is different from current dishwashers.
Observations and context
We can link Josephine Cochrane's invention to other everyday inventions made by women in the late 19th and 20th centuries: the sewing machine (Helen Blanchard), the hypodermic syringe (Letitia Geer), the coffee machine (Melitta Bentz), the disposable nappy (Marion Donovan), the lifeboat (Maria Beasley), the ink pen (Bette Nesmith Graham) or the windscreen wiper (Mary Anderson).
Description
Exercise on researching and summarising information. In this exercise, we will:
Describe objects.
Look up information.
Summarise key ideas.