1880 IMPORTANT ROBERT MUENCKE BERLIN ELECTROMAGNETIC STATIC ELECTRICITY DEVICE

Description

Believed to be an early example of a solenoid electro-magnetic medical or laboratory air valve all in original aged patina, not cleaned or polished in any way.DESCRIPTION
Builders name: Robert Muenke – Berlin
Circa 1880 – Electromagnetic Laboratory Valve Details include:2.5\” diameter removable brass bezel 2 ‘’ diameter glass panel revealing electro-magnetic mechanism including twin 5/8\” diameter x 1\” long silk covered wire field coils w/ steel plate to metering valve, orig coiled wire to twin case mounted wire terminals each with neriled clamp screw. Inner case w/ maker\’s name stamped in brass. Weight 2.5lbs. Overall length over tube fittings 5 3/4\” Other fine details include: 2 1/2\” diameter x 1 3/8\” deep case with case mounted valve adjustment screw and twin 1 1/4\” long ribbed tubing connectors.  Believed to be an early example of a solenoid electro-magnetic medical or laboratory air valve all in original aged patina, not cleaned or polished in any way. Tested with 2 volts DC by Variac – in working order. See photos In excellent condition with aged patina as removed from Smith College Laboratory Storage Collection. We have acquired numerous items from this collection that will be offered. ROBERT MUENCKE, 58 Luisenstrasse, BERLIN, N.W., Luisenstrasse 58, Merchant and Manufacturer of BACTERIOLOGICAL, HYGIENIC &; CHEMICAL APPARATUS &; APPLIANCES.
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