An interesting variation of the regenerative
principle was developed by Julius
Jeffreys (1801-1877) who had
studied medicine in Edinburgh and London. In 1836 in order to give
relief to his widowed sister who was suffering from a pulmonary attack
he devised the Respirator. The appliance consisted
of a series of exceedingly thin perforated diaphragms - rods, wires or
tubes were afterwards to answer equally well - fixed in a suitable
frame and applied over the mouth. The heat of the breath in
passing out through the plates was taken up to be returned to the air
inhaled. The respirator was apparently well received by the medical
profession. Jeffreys was granted a patent in 1836 (No. 10,287) for Curing
or relieving disorders of the lungs. Further improvements
were patented in 1844 (No. 10,287) and in 1850 (No. 12,984)
Julius Jeffreys MD. FRS. (1801 - 1877)
English Patent No. (10,287) Curing or relieving disorders of the lungs.
Improvements (10,287 in 1844 and 12,984 in 1850)
A book: Julius Jeffreys, The British Army in India: Its
Preservation by an Appropriate Clothing, Housing, Locating, Recreative
Employment, and Hopeful Encouragement of the Troops (London:
Longman, Brown, Green, Longman and Roberts, 1858)
Married Jane Mary Graham
The
3M corporation has a product which works on the same principle:-
Nexcare(TM) Air Warming Mask, 3M(TM)
For cold weather; warms and moistens inhaled air. Easy to breathe
through, lets you communicate easily and doesn't muffle your voice.
Manufactured by 3M Products
The
Lung Foundation.