Specification of William Higginbottom Treacher : respirators.

  • Treacher, William Higginbottom.
Date:
1859
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Higginbottom Treacher : respirators. Source: Wellcome Collection.

    4/4 (page 2)
    Provisional Treacher s Improvements in Respirators. purifying agent in that chamber to which the valve opening inwards is fitted. In this respirator, without the slightest additional effort in breathing, air is inhaled through one chamber and exhaled through a separate chamber; consequently the air exhaled is not again drawn into the lungs, nor can it commingle with that drawn in. 5 LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen’s most Excellent Majesty. 185D.