Specially Applicable for Experi- mental Dyeing ins andes.
Year: 1884

page_text: аррагати 10г повышg Dye robs by шелиз от
Steam, such Apparatus being Specially Applicable for Experi-
mental Dyeing in Industrial Schools and Laboratories.
We, DAN DAWSON, of Hofmann Street, Milnsbridge, near Huddersfield, Yorkshire,
Chemist and HORACE BROADBENT, of Huddersfield, aforesaid, Machine Maker do
hereby declare the nature of our invention for "NEW OR IMPROVED APPARATUS
FOR HEATING DYE POTS BY MEANS OF STEAM, SUCH APPARATUS BEING SPECIALLY
APPLICABLE FOR EXPERIMENTAL DYEING IN INDUSTRAL SCHOOLS AND LABORA-
TORIES," to be as follows:-
"
•
Our invention has reference to means to be employed for heating water in small
dye pots used in experimental dyeing and such as those used in technical schools
where the art of dyeing is taught.
Hitherto such dye pots have been heated by the employment of liquid capable
of being heated to a temperature of 280 to 300 degrees Faht such liquid being
heated by means of gas or other fuel or by means of boiling water baths. When
water baths were used the temperature of the dye bath never fully reached the
boiling-point of the water, consequently the dye bath did not boil. In order to
obtain a boiling temperature in the dye bath which is essential to do, oil baths
are generally used and heated by gas or other fuel, which are burnt directly under
the bath, whereby any temperature necessary for dyeing is obtained; this method
of heating the dye bath is attended with many disadvantages, such as overheating
the oil bath, causing it to decompose and throw off an offensive smell, also the
want of control over the combustion of said gas or other fuel is another disadvantago,
and in addition to these things, gas is more expensive than steam.
By our invention we overcome such disadvantages by dispensing with the use
of gas or other fuel, and in substituting steam therefor. By experiment we have
found that steam at 40 to 50 pounds to the square inch will carry a temperature
sufficient for the purpose.
The mechanism we employ consists of a steam tight vessel having cavities cast
or formed therein of a size and shape corresponding to the dye pots. Into these

page_text: cavities we place glycerine, oil, or other liquid capable of being heated to a suitable
temperature. Steam is introduced into the steam tight vessel, which surrounds
and envelopes the cavities thereby heating the contents thereof to a suitable
temperature. The dye pots are placed into the glycerine which soon causes the
dye liquid to attain a boiling point. By this means a regular and steady boiling
can be maintained which is of great importance in experimental dyeing as water
in small vessels soon evaporates.

page_text: Steam, such Apparatus being Specially Applicable for Expert-
mental Dyeing in Industrial Schools and Laboratories.
We, DAN DAWSON of Hofmann Street, Milnsbridge, near Huddersfield, Yorkshire,
Chemist, and HORACE BROADBENT of Huddersfield aforesaid Machine Maker do
hereby declare the nature of our invention for "NEW OR IMPROVED APPARATUS
FOR HEATING DYE POTS BY MEANS OF STEAM, SUCH APPARATUS BEING SPECIALLY
APPLICABLE FOR EXPERIMENTAL DYEING IN INDUSTRIAL SCHOOLS AND LABORA-
TORIES," and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
Our invention has reference to means to be employed for heating water in small
dye pots used in experimental dyeing, and such as those used in technical schools
where the art of dyeing is taught.
Hitherto such dye pots have been heated by the employment of liquid capable
of being heated to a temperature of 280 to 300 degrees Fahrenheit such liquid
being heated by means of gas, or other fuel or by means of boiling water baths.
When water baths were used the temperature of the dye bath never fully
reached the boiling point of the water, consequently the dye bath did not boil.
In order to obtain a boiling temperature in the dye bath which is essential to
do, oil baths are generally used and heated by gas or other fuel, which are burnt
directly under the bath, whereby any temperature necessary for dyeing is obtained,
this method of heating the dye bath is attended with many disadvantages such
as overheating the oil bath causing it to decompose and throw off an offensive
smell, also the want of control over the combustion of said gas or other fuel
is another disadvantage and in addition to these things gas is more expensive
than steam.
By our Invention we overcome such disadvantages by dispensing with the use
of gas or other fuel and in substituting steam therefor. By experiments we have
found steam at 40 to 50 pounds to the square inch will carry a temperature
sufficient for the purpose. The mechanism we employ consists of a steain tight
vessel having cavities cast or formed therein of a size and shape corresponding
to the dye pots.
Into these cavities we place glycerine, oil, or other liquid capable of being heated
to a suitable temperature, steam is introduced into the steam tight vessel which
surrounds and envelopes the cavities, thereby heating the contents thereof to a
suitable temperature.
The dye pots are placed into the glycerine which soon causes the dye liquid to
attain a boiling point.
By these means a regular and steady boiling can be maintained which is of
great importance in experimental dyeing as water in small vessels soon evaporates.
Such being the nature and object of our Invention we will now proceed to
describe the same more fully and for that purpose we have annexed the accom-
panying sheet of drawings, wherein Fig 1 is plan view of a series of dyeing pots

page_text: arranged to work according to our Invention, Fig. 2 is longitudinal section of same
through the line A, B, and Fig. 3 is end view partly in section, and partly in
elevation, C are metal boxes or vessels having cavities or openings in the top
thereof, in which are screwed or otherwise fastened so as to be steam tight certain
metal pans D which receive the dye pots E leaving an annular space F between
the pan and the pot which space is filled with glycerine, oil, or other suitable
liquid. The box C which carries the dye pots is supported at each end by
suitable standards G, and is made with a stuffing boxed axis so as to be capable
of turning over for the purpose of emptying the contents of the dye pots, the said
box being provided with a handle L so that it can readily be overturned. Steam
to heat the glycerine enters at the part H and passes through the pipe I into the
box C whereby the pans D and the contents thereof are heated, the steam and
condensed water then make their escape through the outlet b up the passage c
through the pipe J, and finally out at point K.
It will therefore be seen that by the employment of mechanism such as herein
shewn and described that the contents of dye pots can be readily boiled and
the temperature maintained, whilst at the same. time a compact, handy, and neat
apparatus is provided much needed for experimental dyeing in industrial schools
and laboratories.
The pots E are provided with a flange d and are made secure to the pans D
by a brass ring M, and set screw e india rubber rings f being used to prevent
breakages.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim as our Invention is,
The construction of mechanism substantially as herein shewn and described
consisting of box C, pans D, and dye pots E in combination with steam for purposes
set forth.