In 1896 Robert James Probyn-Williams was appointed first honorary anaesthetist to the London Hospital and joined a select band of fulltime anaesthetists (26) in Great Britain. The Probyn Williams inhaler was a further modification of the Clover inhaler with narrow airways and rebreathing. The metal inhaler is ovoid shaped. The rotating gauge has a series of numbers engraved onto the inhaler for measurement. There is an elbow joint leading to a connector for attaching a re-breather bag, and at the other end is tap-style mechanism. There is a small glass bulb encased in a metal housing. The facemask is completely made of metal as well.Stamped into handle of tap: COEXTER & SONjoseph clover, frederick hewitt, robert probyn williams

In 1896 Robert James Probyn-Williams was appointed first honorary anaesthetist to the London Hospital and joined a select band of fulltime anaesthetists (26) in Great Britain. The Probyn Williams inhaler was a further modification of the Clover inhaler with narrow airways and rebreathing.Ovoid shaped metal ether inhaler device with a dark brown leather fask mask attached.Moulded into inhaler: MAYER & MELTZER / LONDON