This page compares what the source claims about Antonio d'Angelo's motor with what the source actually supports. It follows the wiki's existing pattern of "claims vs. evidence" pages for over-unity-adjacent inventors (see comparison-alperen-claims-vs-evidence, comparison-boyce-hho-claims-vs-evidence, comparison-garrett-carburetor-claims-vs-thermodynamic-critique).
The claims
| Claim | Source | What is offered |
|---|---|---|
| Motor generates "many times the power it receives originally from an electric battery" | New York Times, March 7, 1928 | Inventor's announcement; no measurement |
| Energy comes from "the electricity produced by the inter-atomic energy of the ions" | New York Times, March 7, 1928 | Inventor's description of a plan; no mechanism, no data |
| Motor could supply home lighting and heating, and run trains, airplanes and automobiles | New York Times, March 7, 1928 | Inventor's assertion |
| Secondary EMF exceeds primary's "although the secondary circuit has a smaller number of conductors and turns" | US 2,021,177 (1935) | Patent's stated principle; Figure Vc geometric argument |
| "No demagnetizing effect" when secondary current flows between same-polarity poles; efficiency increased | US 2,021,177 (1935) | Patent's stated principle; no measurement |
| Efficiency increased by increasing armature length (self-induction ∝ turns²) | US 2,021,177 (1935) | Patent's stated principle; no measurement |
| 12,000 V AC transformed to 25 V DC without auxiliary devices | US 2,021,177 (1935) | Patent's stated example; no test data |
The evidence
- No measurements. Neither document reports efficiency figures, input/output power, or test results.
- No independent test. The Times piece reports an announcement; the patent is a legal document describing an apparatus and asserting operating principles.
- No demonstration data. The Times notes only that d'Angelo "had a plan of his motor with him" and showed how it "started to develop energy from an electric battery."
- Figure Vc is illustrative geometry. The area-based average-voltage argument is a diagrammatic illustration of the patent's stated principle, not experimental data.
The central tension
The 1928 press claim and the 1935 patent are not the same claim. The press account claims "inter-atomic" energy and "many times" the input power. The patent describes a conventional electromagnetic transformer/motor-generator with a particular winding geometry and does not claim over-unity. The source does not reconcile the two, and the patent's own explanation of increased secondary EMF (additive EMFs, four flux variations per half-cycle, higher rotor speed) is offered as an operating principle rather than a measured result.
The Hendershot contrast
d'Angelo rejected the Hendershot "fuelless motor" on the grounds that Earth's magnetic field is too weak to run a motor. The source presents this as a contrast the inventor drew, not as a resolved dispute: d'Angelo's own claim of drawing energy from ions is equally unsupported by the supplied evidence.
Assessment
On the supplied documents, the 1928 over-unity claim is unsupported by any measurement or independent test, and the 1935 patent does not itself assert over-unity. The patent's substantive content is its winding geometry (Differential-Pitch Pole-Armature Winding), which is described as a means of increasing secondary EMF relative to primary — a claim the patent illustrates geometrically but does not verify experimentally.
Related
- Antonio d'Angelo
- US2021177 Motor Generator & Other Transformer
- Inter-Atomic Ion Energy Claim
- over-unity-claims
Source notes & attribution
- https://rexresearch.com/angelo/angelo.htm