Improvements in Thermometers.
Year: 1895

page_text: Date of Application, st Apr., 1895
Complete Specification Left, 1st Jan., 1896-Accepted, 15th Feb.. 1896
PROVISIONAL SPECIFICATION.
Improvements in Thermometers.
We, ERNEST MARKHAM VALENTINE GIBB of 3 Manor Villas Hamilton
Road Highbury N. and GEORGE WILLIAM SIMPSON of 19 Whiskin Street
Clerkenwell E.C. both in the County of London, do hereby declare the nature of
this invention to be as follows:-
Our invention consists of a tube with flat or oval back, with usual bore for
mercury or other fluid; but in rear of usual bore I propose to place (instead of
the wide enamel backing usually used) a narrow strip of enamel or other suitable
material, leaving, on each side of the strip, sufficient flint or clear glass to permit
the figures and divisions or graduations being placed on the rear portion of the
tube, and each side of the enamel strip; thereby enabling the graduations to be read
from the front of the tube, while retaining the advantage of the enamel backing for
observing the height of the indicating fluid. The advantages we claim for our
invention are, that the graduations and figures being placed upon the flattened or
oval surface in rear of the tube, in close proximity to the bore containing the
indicating fluid, instead of upon the front of the tube, as is the case in most
thermometers, the position of the indicating fluid can be more readily and
accurately ascertained.
The novelty of our invention consists of the method of construction of a tube
for thermometers, also the method of showing the graduations upon the tube of
thermometers, and particularly those thermometers such as chemical or clinical
thermometers having very fine bores.
Dated this 1st day of April 1895.
ERNEST MARKHAM VALENTINE GIBB.
GEORGE WILLIAM SIMPSON.
We ERNEST MARKHAM VALENTINE GIBB of 3 Manor Villas Hamilton
Road Highbury N. and GEORGE WILLIAM SIMPSON of 19 Whiskin Street
Clerkenwell E.C. both in the County of London do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our invention consists of a tube with a flat or oval back with usual bore for
mercury or other fluid but in rear of usual bore I propose to place (instead of the
wide enamel backing usually used) a narrow strip of enamel or other suitable
material leaving on each side of the strip sufficient flint or clear glass to permit
the figures and divisions or graduations being placed on the rear portion of the
tube, and each side of the enamel strip; thereby enabling the graduations to be
read from the front of the tube, while retaining the advantage of the enamel
backing for observing the height of the indicating fluid. The advantages we
claim for our invention are that the graduations and figures being placed upon the

page_text: flattened or oval surface in rear of the tube in close proximity to the bore con-
taining the indicating fluid, instead of upon the front of the tube, as is the case
in most thermometers, the position of the indicating fluid can be more readily and
accurately ascertained. The novelty of our invention consists of the method of
construction of a tube for thermometers, also the method of showing the graduations
upon the tube of thermometers, and particularly those thermometers such as
chemical or clinical thermometers having very fine bores. An advantage of our
invention is that all the figures and graduations being marked on the back and in
rear of the indicating fluid, the column of mercury is not obscured and no shadows
are thrown on the indicating column or graduations especially by night light as is
the case in other forms of instruments.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is.
(1.) The construction of tubes for thermometers with a narrow strip of enamel
in rear of the bore to permit the figures and divisions being placed upon the rear
portion of the tubes in such manner that the bore or indicating column is left
unobscured.
(2.) Constructing thermometers with a narrow strip extending along the rear
portion of the tubing and surrounded by a body of clear glass in such way as to
allow a clear view of the bore and graduations in rear of tubes.
Dated this 1st day of January 1896.
ERNEST MARKHAM VALENTINE GIBB.
GEORGE WILLIAM SIMPSON.