Historical information

Dr Thomas Small designed this ether anaesthesia and analgesia machine while he was an Honorary Medical Officer at the Royal Women's Hospital in Sydney during the 1930s. The inhaler is compact and portable. Initially, Small experimented with other agents for the relief of labour pain but was not happy with any of them. He also tried various agents on himself, including nitrous oxide/oxygen, chloroform and ethyl chloride. Finally he settled on ether via a Clover inhaler as the best analgesic. This inhaler is only described in use in Australia and New Zealand, although it was used for almost 40 years.

Physical description

Black leather box with leather handle, lockable latches on either side and drop down front case panel containing a metal ether inhaler and length of black corrugated rubber hose with one end attached to the inhaler and the other end open for attaching a mask. The metal inhaler drum is circular and attached to the floor of the case with a small tap/lever to one side and a mixing valve on the top near the hose connection. The lever has incised gradings of quarter increments from 0 to 1. The box is designed for the ether inhaler to be portable.