1894 Edison Bipolar Fan Appraised at $6,000–$8,000: A Rare Survivor of Early Electric History
At DJR Authentication, we recently examined a remarkable piece of American innovation: an original circa 1894 Edison 1/6 HP slow speed motor fan featuring its original brass blade and protective cage. Submitted through our online Fast Opinion service, this rare fan is not only a stunning piece of early electrical engineering — it’s also a collector’s dream.
A Groundbreaking Invention by Edison
This fan was powered by Edison’s iconic slow-speed bipolar motor, praised in its day for its high efficiency and low wear. Designed to reduce friction on the commutator, brushes, and bearings, the motor was an elegant solution for early electric appliance builders. The removable brass-sleeved bearings were also a standout innovation, offering easy maintenance and replacement.
Original Construction and Functionality
This example is believed to retain nearly all original components, except for the oilers, which were replaced with precision-made replicas to match the original specifications. The fan has been tested and operates perfectly — a rare feature for machines of this age.
Dimensions:
Height: 14.5"
Width: 13"
Depth: 11"
Estimated Appraised Value: $6,000–$8,000
Given its condition, originality, functional status, and historical importance, this Edison bipolar fan carries an estimated value between $6,000 and $8,000. Comparable examples are rarely seen on the open market, and complete working models are especially scarce.
Collectors of early electric devices, Edison memorabilia, and pre-1900 industrial antiques may consider this a flagship piece in any serious collection.
Do You Own a Historic Electrical Device or Invention?
We specialize in rare machines, prototypes, early motors, and unique engineering artifacts. Whether you need a quick value estimate or a full appraisal for resale, insurance, or legacy purposes — we can help.
✓ $25 Fast Opinion – Quick expert value or authenticity check
✓ $125 Full Appraisal – Detailed PDF report with market comps and valuation
