Improvements in and connected with Tubes and other Receptacles for Storing and Immersing Hydrometers and the like
Year: 1891

page_text: Date of Application, 22nd July, 1891
Complete Specification Left, 14th Apr., 1892-Accepted, 21st May, 1-92
PROVISIONAL SPECIFICATION.
Improvements in and connected with Tubes and other Receptacles
for Storing and Immersing Hydrometers and the like.
I, FREDERICK WILLIAM FLETCHER, of Beauchamp Lodge, Enfield, in the
County of Middlesex, Manufacturing Chemist, do hereby declare the nature of this
invention to be as follows:-
My invention relates to improvements in & connected with tubes & other
receptacles for storing & immersing hydrometers & the like, and its object is to
Iprovide a tube or other receptacle in which hydrometers and other similar
instruments can be stored for transit or otherwise, without risk of breakage, and
which will also serve the purpose of an immersion tube when the hydrometer or
other similar instrument is required for use.
The arrangement consists of tube or case, formed of any suitable material, at
the bottom of which is a cushion, perforated or otherwise to receive the bulb of the
hydrometer. The cover of the tube contains a perforated diaphragm through
which the stem of the hydrometer can pass, and also a spring or ball of india
rubber or other material, which, when the hydrometer is stored in the case presses
upon the top of the stem & keeps the instrument in a rigid position. When the
hydrometer is required for use, the tube can be filled with the liquid to be tested,
thus dispensing with the use of a separate tube.
Dated this 22nd day of Jul
1891
:
FRED. W. FLETCHER.
COMPLETE SPECIFICATION.
Improvements in and connected with Tubes and other Receptacles
for Storing and Immersing Hydrometers and the like.
FREDERICK WILLIAM FLETCHER, Beauchamp Lodge, Enfield, Middlesex,
Manufacturing Chemist, 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 improvements in and connected with tubes and other
receptacles for storing and immersing hydrometers and the like, and its object is to
provide a tube or other receptacle in which hydrometers and other similar instru-
ments can be stored for transit or otherwise without risk of breakage and which
will also serve the purpose of an immersion tube when the hydrometer or other
similar instrument is required for use.
The arrangement consists of a tube or case formed of any suitable material, at
the bottom of which is a cushion perforated or otherwise to receive the bulb of the
hydrometer. The cover of the tube contains a perforated diaphragm, through
which the stem of the hydrometer can pass, and also a spring or ball of india
rubber or other material, which, when the hydrometer is stored in the case presses
upon the top of the stem, and keeps the instrument in a rigid position. When the
hydrometer is required for use the tube can be filled with the liquid to be tested
thus dispensing with the use of a separate tube.
The accompanying drawing represents a vertical section of a tube as above
described containing an hydrometer in the position it would occupy when stored
therein. A is the body of the tube and B its hollow cover or cap attached securely
thereto at a by means of a screw thread, bayonet catch, or any other suitable
fastening. At the bottom of the tube is the cushion C formed of india rubber or
ID 017

page_text: any other suitable material, and recessed at D to receive the projecting end of the bulb
of the hydrometer H. Within the hollow cover B is the diaphragm E perforated
in the centre to allow the stem of the hydrometer to pass through it when the
cover is placed on the tube. Above the diaphragm is an elastic air ball F which
may have a pin-hole opening if desired as shewn at 9. When the cover is fastened
down on the tube, the pressure of the elastic air ball is sufficient to keep the
hydrometer in a steady position, whilst allowing sufficient play to obviate risk of
breakage should the tube sustain concussion. When the hydrometer is required
for. use it is simply necessary to remove the cover B and pour the liquid to be
tested into the tube A.
I do not limit myself to the use of an air ball and cushion as herein described if
any more convenient form of spring or seat possessing softness and elasticity can
be advantageously substituted."
My invention is also applicable to the storage or packing of any delicate
instruments or constructions of glass or other material which are liable to fracture.
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. A tube or other receptacle for storing or packing hydrometers and other
delicate instruments or constructions the said tube or receptacle having a perforated
diaphragm and an elastic spring or cushion at one or both ends substantially as
described.
2. A tube or other receptacle for storing or packing hydrometers and the like
which can also be used as an immersion tube when the hydrometer or other similar
instrument is required for use.
Dated this 13th dew of April 1892
FRED. W. FLETCHER.