An Improvement in Hydrometers, Saccharometers, and such like Instruments.
Year: 1893

page_text: Date of Application, 16th Dec., 1893
Complete Specification Left, 7th June, 1894-Accepted, 7th July, 1894
PROVISIONAL SPECIFICATION.
An Improvement in Hydrometers, Saccharometers, and such like
Instruments.
I, HENRY SHEEHY. KEATING, of Queen's Gate Mansions, Queen's Gate,
Kensington in the County of London, Barrister at Law, do hereby declare the
nature of this invention to be as follows :-
--
My invention relates to hydrometers saccharometers and such like instruments of
the kind in which a bulb loaded, usually with mercury, is immersed in liquid, the
gravity of which is indicated by the depth to which the graduated stem of the
instrument is immersed.
As the stem requires to be of some strength for use, it displaces for every degree
of its immersion a considerable volume of liquid, and consequently the scale is not
so delicate as could be desired. According to my invention I make the stem as a
tube open at both ends or having lateral openings at the top and the bottom so that
the liquid has free access to its interior, and the displacement of liquid is only that
due to the volume of the wall of the tube which is comparatively small.
I can thus consistently with a strong stem, get a scale of greater delicacy than
when the stem is solid or a tube closed against access of the liquid.
Dated this 16th day of December 1893.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Hydrometers, Saccharometers, and such like
Instruments.
1, HENRY SHEEHY KEATING, of Queen's Gate Mansions, Queen's Gate,
Kensington in the County of London, Barrister at Law, 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 :-
My invention relates to hydrometers saccharometers and such like instruments of
the kind in which a bulb loaded, usually with mercury, is immersed in liquid, the
gravity of which is indicated by the depth to which the graduated stem of the
instrument is immersed.
As the stem requires to be of some strength for use, it displaces for every degree
of its immersion a considerable volume of liquid, and consequently the scale is not so
delicate as could be desired. According to my invention, I make the stem as a
tube open at both ends or open at the top with a lateral opening at the bottom or
having lateral openings at both the top and the bottom, so that the liquid and air
have free access to its interior, and the displacement of liquid is only that due to
the volume of the wall of the tube which is comparatively small. I can thus
consistently with a strong stem, get a scale of greater delicacy than when the stem
is solid or a tube closed against access of the liquid.
The accompanying drawing is a vertical section of a hydrometer according to my
invention. The bulb A is charged with a suitable load of mercury, the air bulb B
is closed as usual, the graduated stem C, instead of being solid or a closed tube, is
a tube open at the top and having at its bottom a lateral orifice D by which liquid
cau freely enter the tube when the hydrometer is immersed.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A hydrometer or such like instrument made with a tubular stem open at the top
and the bottom, substantially as and for the purpose set forth.
Dated this 7th day of June 1894.
ABEL & IMRAY,
Agents for the Applicant