ozone generator
Datecirca 1900
Inventory Number3840
ClassificationOzone Generator
Subject
Maker
P. Ehlis
Cultural Region
Place of Origin
Dimensions15 × 18 × 7 cm (5 7/8 × 7 1/16 × 2 3/4 in.)
Material
DescriptionA wooden box, with four wooden blocks as feet, open at the bottom. It contains a discharge tube surrounded by a metal cylinder perforated on top with a chimney that protrudes through the top of the wooden box. Two electrical contacts for the tube are on the sides of the box, connecting to a metal collar inside. The glass discharge tube rests on a metal frame inside the box.
Signedon ivory plaque: APPAREIL à OZONE / BREVETÉ / P. EHLIS / LIÉGE, BELGIQUE
Curatorial RemarksFor more information on this machine, to which Marie Paul Oudin, inventor and assignor to Jules Ehlis, was granted a US patent in 1893 (499,572), go to the following <a href="http://www.google.com/patents?id=e21AAAAAEBAJ&pg=PP2&lpg=PP2&dq=Ehlis+belgium+ozone&source=bl&ots=B6Giy9_920&sig=mqvn7mBjFXq96yrqvX8PECyw1cc&hl=en&sa=X&oi=book_result&resnum=6&ct=result#PPP2,M1" target="_blank">website</a>.
FunctionOzone is produced in this device by electrical discharges inside the tube, which turn the oxigen present in the air into ozone.
Charles Chardin
Date: 1870-1900
Accessories: key; mahogany case
Object number: DW0829
Eastern Laboratories Inc.
Date: circa 1924
Accessories: Instruction manual; carrying case
Object number: VT4807
Date: 1890-1930
Object number: RS0505
Central Scientific Company
Date: circa 1940
Accessories: 2 Leyden condensers made of Pyrex
One rubber **gutta percha?** pulley, rotted.
Object number: 1997-1-0634
Thomas Hall
Date: circa 1890
Accessories: pulley rope
Object number: 1997-1-1423
Date: 1890-1930
Object number: RS0501
Julien P. Friez
Date: 1890-1910
Accessories: part (a) is the stand, part (b) is the sensor
Object number: 1998-1-0837a,b
American
Date: 1920-1940
Accessories: electrical parts; glass plate holder; objective with three lenses
Object number: 1996-1-0261