Diabolo - Diabolo CK
Brand and Model
Brand: Diabolo (originally manufactured by the Swedish Pump-Separator, a company later absorbed precisely by Alfa Laval).
Model: Diabolo CK
Period: Datable roughly between the 1920s and the 1940s.
Technical Characteristics
The churn is used to shake and "beat" the cream until the fat globule membranes break, separating the butter from the buttermilk:
Operating mechanism: By turning the crank, the exposed gears at the base make paddles (or an entire basket) rotate at high speed inside the large sealed metal container.
Operating speed: 50-55 turns per minute, as clearly indicated in relief on the casting of the black crank (50-55 REV. PR. MIN.). Keeping this steady rhythm was essential for the butter to turn out perfectly.
Structure and Components:
Heavy base in black-painted cast iron, fixed onto a wooden support frame.
Large domed container in matte metal alloy (typically thick aluminium or galvanised metal) fitted with a sealed upper lid to prevent the cream from spilling out during churning.
Rotating light-wood handle, still in excellent condition.
State of preservation: Splendid and fully original. The oval brass nameplate with the Diabolo CK mark is perfectly centred and legible on the machine body.
Historical Value and Positioning
Historical Value
The Diabolo brand was born under the aegis of the Swedish Aktiebolaget Pump-Separator, founded in Stockholm in 1903 to compete with Alfa Laval. Their products (separators and churns) became famous throughout Europe for their excellent value for money. In farmhouses and small agricultural businesses of the early 20th century, this object worked "in pairs" with the cream separator: the separator was first used to extract the cream from the milk, and then the cream was poured into this Diabolo churn to turn it into blocks of butter.
Position in Collecting
This piece is of great interest to collectors because manual metal churns of this shape (compact, "tabletop") have survived less frequently compared to large wooden barrel churns or vertical separators. The clean lines and the presence of the original wooden base make it a very elegant piece of rural antique, sought after for historical exhibitions or themed decor.
Fun Facts
The origin of the name "Diabolo": The shape of the very first separator patented by this company greatly resembled the hourglass shape of the diabolo (the famous juggling toy). The name was so well liked that it was kept as the brand name for entire product lines, including these butter churns.
The mystery of homemade butter: Making butter with this machine required great sensitivity. If the cream was too cold, the fat would not separate; if it was too warm, the butter would turn into a shapeless paste. The farmer had to listen to the "sound" of the liquid changing inside the metal drum to know the exact moment the butter had finally formed.