Specification of Thomas Paton Hawksley : clinical thermometers.

  • Hawksey, Thomas Paton.
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Thomas Paton Hawksley : clinical thermometers. Source: Wellcome Collection.

    4/8 page 2
    2 A.D. 1870.—N° 801. Provisional Specification. Hawlcsley’s Improvements in Clinical Thermometers. I am aware that other descriptions of self-registering maximum thermometers have had the tube contracted so as to prevent the return of a column of mercury past such contraction under the ordinary changes of temperature, but such contraction has been employed in cases where the column of mercury rising from the bulb has been employed as the 5 index, and in such cases the mercury has been caused to re-enter the bulb by shaking the instrument. I am also aware that other descriptions of thermometers have been employed in which a contraction has been made in the tube in close connection with the bulb, but such contraction has only been employed 10 to prevent the column of mercury running down the tube by its own weight, and in no case has a self-registering maximum clinical thermometer been made with a contraction to prevent the possibility of the index entering the bulb. LONDON: Printed by George Edward Eyre and William Spotttswoode, Printers to the Queen’s most Excellent Majesty. 1870.
    digitised image 1
    digitised image 2
    digitised image 3