Froment Motor, or Revolving Armature Engine

Title

Froment Motor, or Revolving Armature Engine

Subject

Electric Motors

Description

In 1844 Froment devised an electric motor that was one of the first used for industrial purposes. In his design, electromagnets are energized to attract iron bars mounted on a revolving cage. Once the iron bar is level with the electromagnet, the current to the electromagnet is cut off until the next iron bar is in range. A commutator is used to complete and then break the current to the electromagnet. This Froment-type motor was probably made in the second half of the 19th century.

Source

Property of the W&L Physics & Engineering Department

Files

http://s3.amazonaws.com/omeka-net/2253/archive/files/6f941bddea36d9d36a40d0fd7417ac19.jpg

Citation

“Froment Motor, or Revolving Armature Engine,” Digital Exhibits at Washington and Lee University Library, accessed November 18, 2017, http://omeka.wlu.edu/items/show/190.