A paperfolding paradise
The website of writer and paperfolding designer David Mitchell
page attempts to record what is known about the active
play design known as the Butterchurn. Please contact me
if you know any of this information is incorrect or if
you have any other information that should be added.
As far as I know this design first appears as 'Butterstampfe' in 'Die Praxis Des Kindergartens' by Auguste Koehler, which was published by Herman Bohlau in Weimar in 1873. The text explains how in this action design a strip of paper is first rolled up and then the centre of the roll is pulled out and pushed back in to simulate the action of churning butter.
The design also appears, as 'The Churn' in 'The Kindergarten Guide' by Maria Kraus Boelte and John Kraus, which was first published in single volume form by E. Steiger and Company in New York in 1882.