Ruhmer Coherer, Used at Hammond Radio Research Laboratory, circa 1905

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Artifact Overview

John Hays Hammond, Jr., was largely responsible for launching the field of radio control. In 1926, he built a medieval-inspired castle in Gloucester, Massachusetts. This site served as his home and research laboratory. With over 400 patents to his name, Hammond developed ideas for radio control, autopilot function, and targeted missile detonation. This device was used in Hammond's laboratory.

Artifact Details

Artifact

Radio detector

Date Made

circa 1905

Place of Creation

Location

Not on exhibit to the public.

Object ID

36.594.1

Credit

From the Collections of The Henry Ford.

Material

Brass (Alloy)
Copper alloy
Glass (Material)
Iron alloy
Nickel (Metal)
Wood (Plant material)

Dimensions

Height: 3.25 in
Width: 4.125 in
Length: 5.5 in

Inscriptions

plaque: Ernst Ruhmer Berlin S.W. 48 Friedrichstr. 248