Improvements in Self-registering Thermometers.
Year: 1886

page_text: PROVISIONAL SPECIFICATION.
Improvements in Self-registering Thermometers.
I, JAMES JOSEPH HICKS of 8 Hatton Garden in the county of Middlesex, Meteoro
logical Instrument Manufacturer, do hereby declare the nature of said invention to be
as follows:-
In self registering thermometers formed with flattened or oval bores a mercury
index has hitherto been employed and in such class of instruments which have been
made with round bores a round needle index has been used.
In carrying my invention into effect I also use a flattened or oval bore and use in
combination therewith a needle index which according to my invention I make with a
head of like form to that of the bore as one with a round head would not act in com-
bination with a flattened or oval bore.
By these means I am enabled to obtain the advantage of an oval or flattened bore
in a self registering thermometer together with an index needle which is more dis-
tincly visible than heretofore. I also prefer to construct such thermometers with a
magnifying or lens front.
JAS. J. HICKS.
By Harris & Mills,
23, Southampton Buildings,
Agents.

page_text: Improvements in Self-registering Thermometers.
I, JAMES JOSEPH HICKS of 8 Hatton Garden in the County of Middlesex, Meteoro-
logical Instrument Manufacturer, do hereby declare the nature of this invention and
in what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
In self-registering thermometers formed with flattened or oval bores a mercury index
has hitherto been employed and in such class of instruments which have been made
with round bores a round needle index has been used. In carrying my invention
into effect I also use a flattened or oval bore and employ in combination therewith
a needle index which according to my invention I make with a head of like form to
that of the bore as one with a round head would not act in combination with a
flattened or oval bore.
By these means I am enabled to obtain the advantage of an oval or flattened bore
in a self-registering thermometer together with an index needle which is more
distinctly visible than heretofore. I also prefer to construct such thermometers with
a magnifying or lens front.
And in order that my said invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings more fully to
describe the same.
Figure 1 is a vertical section and Figure 2 is a horizontal or cross section of part
of a self-registering thermometer having my invention applied thereto and Figure 3
is an edge view of the needle index separately.
a represents a thermometer tube which is made with a lens front a' and a flattened
or oval bore a² as has before been the case with some classes of clinical and other
thermometers.
I employ in combination with a thermometer of the character above described a
needle index 6 which according my invention I make with a head at each end of some-
what similar shape to that of the bore as one with a round head would not act in com-
bination with a flattened or oval bore.

page_text: By these means I am enabled to obtain the advantage of an oval or flattened bore
either with or without a lens front together with an index needle which is more
distinctly visible than those hitherto in use in self-registering thermometers.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :
In self-registering thermometers the combination with a flattened bore of an index
needle formed substantially as herein shown and described and for the purpose stated.
JAMES JOSEPH HICKS.
By Harris & Mills,
23, Southampton Buildings,
Agents.