📜 Historical LegendSourced★★★☆☆Intermediate

Hendershot Generator

by Lester J. Hendershot · USA · 1928

Claimed COP
>>1.0 (self-running claimed)
Replications
Many attempted over 100 years
Community Score
0
⚠️

Safety & Liability Disclaimer

Replicating alternative electromagnetism or mechanical resonance systems carries extreme physical hazards including lethal voltage shock, explosive gas ignition, mechanical shrapnel, and chemical toxicity. All contents, schematics, and guidelines on this page are provided strictly for educational and historical research.

By viewing or constructing any design herein, you agree to assume 100% of all risks and to indemnify and hold harmless the site owners, authors, and contributors. Read our complete, legally binding Safety & Liability Disclaimer.

Overview

Claims to generate electricity from Earth's magnetic field through resonance using basket-weave coils with internal capacitors and a permanent magnet 'buzzer' regulator. Based on 1920s radio technology.

⚖️ What Would Convince Us?

To validate the anomalies claimed for this device under mainstream scientific parameters, builders and inventors must document and present evidence satisfying the following criteria:

Criterion #1

Independent load test demonstrating power draw without hidden batteries

Criterion #2

Calibration of magnetic buzzer switching transients

Criterion #3

Replicability of exact coil geometries by external teams

BASKET COIL L1BASKET COIL L2NSSOLENOID ACTUATORCAP C1CAP C2Hendershot Magnetic ResonatorOVERUNITY DIAGRAMS // RESONANT_BASKETWEAVE_COILS
⚡ Animated Schematic

Investigation & Credibility Metrics

Source Credibility
Secondary Source

Derived historical books, catalog indexes, or compiled archives.

Technical Review
Claim Unverified

Claimed overunity/propulsion has not been verified in a control lab.

Replication Tracker
Failed

Multiple builders completed attempts and reported zero success.

Measurement Protocol
Basic Measurements

Simple multimeters used. Subject to power-factor or ground-loop errors.

Commercial Activity
No Commercial Activity

This device is purely open-source or historical; no active sales.

Community Status

Pre-WWII fame. Charles Lindbergh reportedly witnessed a demonstration. 1928 media sensation. No verified successful replication in 100+ years.

🔧 Build Guides

⚠️ CRITICAL SAFETY WARNING

DANGER: LETHAL VOLTAGE, EXPLOSIVE GASES, AND HIGH-VELOCITY PROJECTILES.

This document is a historical archive of unverified claims, NOT a set of instructions. Enmagx and its creators take zero responsibility for injury, death, or property damage resulting from attempting to replicate these theoretical devices.

Proceed for historical research purposes only. Do not attempt to build without professional engineering supervision.

📺 Video & External References

📖 Patrick Kelly Guide: Technical Assessment

Chapter 8 REFERENCE
A highly sensitive historical circuit. Tuning the magnetic vibrator regulator requires extreme patience.
— Patrick Kelly, Practical Guide
### Basket-Weave Coil Resonance Lester Hendershot's generator uses two basket-weave coils wound with 57 pegs, containing internal capacitors. An adjustable permanent magnet buzzer acts as a regulator, oscillating at the natural resonant frequency of the coils to sustain power. ### Winding and Construction * **Basket-Weave Coils**: Wound over wood or brass pegs in an over-and-under pattern to minimize self-inductance. * **Axial Capacitors**: Placed directly inside the coil cores. * **Magnetic Buzzer**: A steel spring strip placed near a permanent magnet and coil to regulate frequency.
Sourced from A Practical Guide to Free-Energy Devices · Personal Study Only

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🔧 Key Components

  • Basket-weave air-core coils (specific winding pattern)
  • Cylindrical capacitors
  • Permanent magnet buzzer/vibrator regulator
  • Iron bars
  • 1:5 transformers
  • Non-metallic frame (wood/plexiglass)

Categories

🛠️ Construction Manual

A complete, step-by-step replication manual is available for this device. Sourced from public archives.

📥 Download Full Manual (PDF)

📖 Patrick Kelly Guide

The complete chapter reference text and schematic diagram are embedded directly in the main section of this page.

Author: Patrick KellyChapter 8
📖 Read Chapter Excerpt (PDF)