Category Archives: Drawing

Spirometer, 1848

Spirometer_Simon_Vogel_1848

Über die Menge der ausgeathmeten Luft bei verschiedenen Menschen und ihre Messung durch das Spirometer: ein Beitrag zur medicinischen Diagnostik : mit 1 Abbildung by Gustav Simon and Julius Vogel, 1848, endplate.  Spirometer manufacturer unknown.

This book was printed two years after Hutchinson’s treatise on the spirometer and the vital capacity and his design has already been modified.

Spirometry, 1850

Spirometry_1850

From: Die Erkenntniß der Krankheiten der Brustorgane aus physikalischen Zeiche n oder Auscultation, Percussion und Spirometrie: Nach Heribert Davie’s Vorlesungen u. eigenen Beobachtungen by Johann Friedrich Hermann Albers, 1850. Endplate.

Notably, this book was published only 4 years after Hutchinson’s treatise on the vital capacity yet his original design for the spirometer appears to have already been modified. The developer of this spirometer was not named in the text.

Spirometer, Coxeter’s, 1861

Spirometer_Coxeters_1861

From: The physical examination of the chest in pulmonary consumption and its intercurrent diseases by Somerville Scott Alison. 1861. Page 351.

“This instrument differs from Hutchinson’s in principal, and possesses the advantage of equal accuracy, great portability and comparative cheapness. It consists of two bags, one acting as a reservoir for expired air, and the other as a measure. The air is first expired into the larger back supplied with stopcocks to retain it. The next step is to pass seriatim the air into the measure bag, and to calculate the amount. The second bag can contain from 40 to 50 cubic inches, and it is to be filled from time to time, till the whole amount is measured. This instrument only costs 26s., and Mr. Coxeter I understand, has very recently improved it.”