Improvements in the Construction of Thermometers.
Year: 1890

page_text: Date of Application, 18th Sep., 1890
Complete Specification Left, 20th July, 1891-Accepted, 13th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Thermometers.
I, GEORGE ALEXANDER SIMMONS, of 90 Hatton Garden, London, E.C.
Meteorological Instrument Manufacturer do hereby declare the nature of my said
invention to be as follows:-
The object of my invention is to manufacture thermometers in an improved
manner, such improved thermometers being especially intended for use in the
kitchen, nursery, bath room, hospital, and other places where unskilled persons are
employed.
I mount the tube in such a manner that the bulb is carried below the scale
board, and protect the bulb from injury by means of a light cage, consisting of a
few wires (preferably 4) surrounding, but not touching, the bulb.
The upper end of the tube is formed with an elbow which enters a hole provided
for its reception, in the scale board, to secure the position of the tube.
By means of this arrangement the temperature of the liquid to be tested has frec
and uninterrupted access to the bulb.
My improvements also consist in forming improved indications upon the scale
board, such as the words "healthy nursery temperature" at 60 degrees; the words
"infants food" at 99°; and so on, according to the use to which the instrument is
to be put. Other words are engraved upon scale boards when the thermometer is
to be used to test the temperature of food, or fluids in process of manufacture; my
method of indicating being intended to facilitate and simplify the reading and
prevent the occurrence of mistakes in arriving at the temperature suited to the
materials or fluids to be used.
The tube and bulb are attached to the scale board by means of metal bands, and
the scale board is mounted in or upon a metallic or other case for convenience of
handling and protecting the thermometer from injury; but the case in not a
necessary or essential part of my invention, and may be dispensed with.
Dated 18th September 1890.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Thermometers.
I, GEORGE ALEXANDER SIMMONS, of 90 Hatton Garden, London E.C.
Meteorological 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 ascertained in and by the following statement:-
The object of my invention is to manufacture thermometers in an improved
manner, such improved thermometers being especially intended for use in the
kitchen, nursery, bath room, hospital, and other places where unskilled persons are
employed.
mount the tube in such a manner that the bulb is carried below the scale
board, and protect the bulb from injury by means of a light cage, or wire work,
consisting of one wire or several wires surrounding, but not touching, the bulb.
The upper end of the tube is formed with an elbow which enters a hole provided
for its reception, in the scale board, to secure the position of the tube.
By means of this arrangement the temperature of the liquid to be tested has free
and uninterrupted access to the bulb.

page_text: My improvements also consist in forming improved indications upon the scale
board, such as the words "healthy nursery temperature" at 60 degrees; the words
"infants food" at 99°; and so on, according to the use to which the instrument is
to be put. Other words are engraved upon scale boards when the thermometer is
to be used to test the temperature of food, or fluids in process of manufacture; my
method of indicating being intended to facilitate and simplify the reading and
prevent the occurrence of mistakes in arriving at the temperature suited to the
materials or fluids to be used.
The tube and bulb are attached to the scale board by means of metal bands, and
the scale board is mounted in or upon a metallic or other case for convenience of
handling and protecting the thermometer from injury; but the case is not a
necessary or essential part of my invention, and may be dispensed with, in which
case the cage or wire would be attached direct to the scale board.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings in which similar
letters of reference indicate corresponding parts.
Fig. 1 is a front elevation showing one form of carrying out my invention,
complete.
Fig. 2 is an elevation, showing another form of case for holding the scale board
and tube; the scale board and tube being omitted.
Fig. 3 is a vertical section of Fig. 1.
Fig. 4 is a section on the line 1-2 of Fig. 1.
Fig. 5 is a section on the line 3-4 of Fig. 2.
Referring to Figs. 1, 3, & 4, a is a metallic casing. b b are grooves formed in
the sides to receive the scale board c: d is the mercurial tube, which is formed
with an elbow d' at its upper end. The elbow enters a hole c' formed in the scale
board, whereby it is prevented from being displaced longitudinally. The tube is
further secured to the scale board c by metallic bands k k screwed to the scale
board. e is a cage formed of wires soldered to a guard bar f, and to the sides and
back of the case a. g is a similar guard bar soldered to the upper part of the
case a. h is a wire handle soldered to the case. The lower end of the scale board
rests upon two of the wires forming part of the cage e. The bulb d² does not touch
any part of the cage e, and is protected from injury by the cage.
In Figs. 2 and 5 another form of case is shown, consisting of two metallic
plates a' a', having grooves 6' 6 formed therein to receive the scale board. The
sides of the case are held in position by the wire handle at the upper end, and
the bent wire e' at the lower end, both wires being soldered to the sides a¹ a¹, as
shown. The wire e¹ acts as a simple form of cage to guard the bulb and tube.
The lower end of the scale board rests upon the ends e² 2 of the wire e'.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In the construction of thermometers the improved arrangement whereby the
bulb is extended below the scale board; the bulb being protected from injury by
means of a light cage or wire work surrounding, but not touching, the bulb, sub-
stantially as hereinbefore described, and illustrated by the drawings.
2. The improvements in the construction of thermometers, substantially as
herein before described and illustrated by the drawings.
100T T 1
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.