Insulated Ear Glass Electrode — Historic Form

A closer look.

The precision end of the cabinet

This slender form shows another side of the old glassworker’s craft. The broad bulbs give way to a fine angled terminal, with the change in construction becoming part of the object’s identity. Pieces like this need a careful label in a collection. Once separated from their fitted case, they can look mysterious; reunited with the period drawing, their place in the range becomes much clearer.

Its place in the old catalogue

The angled specialist form was catalogued as an insulated ear electrode.

A small piece of a bigger machine

The glass belongs to a larger arrangement of generator, resonator and handpiece. The head gives each form its distinctive working geometry: a broad face, a small cup, a row of fingers or a carefully curved stem. For a collector, those differences are part of the engineering story as much as the glowing glass itself.

Finding the right example

Enquire for identification, collector completion or sourcing of the historical form. The illustrated outline does not establish the material or extent of insulation on a particular surviving example.

Enquire about this form

Tell us the maker and model, add a photograph of your handpiece and the attachment you are trying to replace, and we can discuss identification, sourcing and availability. The exact example and connection details are agreed individually.

About the illustration

Generated illustration of this historical electrode form, created for Forgotten Frequencies; not an actual stock photograph. The violet glow is artistic. The supplied example, gas fill, dimensions, connector and availability are confirmed by enquiry.

Historical reference

Master No. 11. The Master Violet Ray catalogue · Renulife Electric Company, 1919 manual