IMPROVEMENTS IN MACHINERY OR APPARATUS FOR THE MANUFACTURE OF BI-SULPHITES, AND IN THE APPLICATION OF THE SAME TO BLEACHING AND PREPARING FOR DYEING OR PRINTING TEXTILE FABRICA AND FIBRES
Year: 1869

page_text: LETTERS PATENT to Walter James Turner, Mechanical Engineer, and
Henry Yewdall, Stuff Finisher, both of Bradford, in the County of
York, for the Invention of "IMPROVEMENTS IN MACHINERY OR APPARATUS
FOR THE MANUFACTURE OF BI-SULPHITES, AND IN THE APPLICATION OF THE SAME
TO BLEACHING AND PREPARING FOR DYEING OR PRINTING TEXTILE FABRICA
AND FIBRES."
Sealed the 18th March 1870, and dated the 23rd September 1869
0
COMPLETE SPECIFICATION filed by the said Walter James Turner and
Henry Yewdall at the Office of the Commissioners of Patents, with
their Petition and Declaration, on the 23rd September 1869,
pursuant to the 9th Section of the Patent Law Amendment Act,.
1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WALTER.
JAMES TURNER, Mechanical Engineer, and HENRY YEWDALL, Stuff
Finisher, both of Bradford, in the County of York, send greeting.
WHEREAS we are in possession of an Invention for "IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR THE MANUFACTURE OF BI-SULPHITES, AND IN THE

page_text: APPLICATION OF THE SAME TO BLEACHING AND PREPARING FOR DYEING OR PRINTING
TEXTILE FABRICS AND FIBRES," and have petitioned Her Majesty to grant
unto us, our executors, administrators, and assigns, Her Royal Letters
Patent for the same, and have made solemn Declaration that we verily
believe ourselves to be the first and true Inventors thereof.
NOW KNOW YE, that we, the said Walter James Turner and Henry
Yewdall, do hereby declare that the following Complete Specification,
under our hands and seals, fully describes and ascertains the nature of
our said Invention, and the manner in which the same is to be performed,
reference being had to the Drawing hereto annexed, and forming part of
this Specification and to the figures and letters marked thereon, that is
to say :-
This Invention consists in improved machinery or apparatus for
the manufacture of bi-sulphites, and- in the application of the same to
bleaching and preparing for dyeing or printing textile fibres and fabrics,
whereby brighter and more even colors are obtained than by the present
processes.
To make our Invention better understood we will proceed to describe
the same by reference to the accompanying Drawing, in which. Figure 1
is a sectional elevation of our improved machinery or apparatus for the
manufacture of bi-sulphites, and Figure 2 plan of the same. The im-
proved machinery consists of a double-acting blast engine A. for forcing a
current of atmospheric air into the air receiver F, into the pipes with
elbows L, L, L, L, into. the bent pipes M, M, M, M, and receiver Qi
B is the piston; D, piston rod; D³, cross head to which is fitted a con-
necting rod attached to a crank on a shaft; D³ guide rods; C, C, O, air
valves made of iron or brass, lined with leather facings to make them air
tight; E, air chamber; E³, air pipe; F, F, F, air chambers; G, G, G,
cast-iron plates perforated with holes not opposite each other so as to
break the force of the blast, thereby increasing its useful effect; H, east-
iron retort; H', an arrangement of feeding door with screw gear H³
for hermetically closing the retort; I, door to clean out retort; J, guard
cast in the retort and pierced with small holes to prevent lumps of
sulphur passing into the pipes L, L, these pipes are supported by
wrought-iron standards o, o; K, elbow cast on the retort to which is
fixed the iron or earthen pipe L; V, fire-place; V³, fire-bars; W, brick-
work; W, flue leading to chimney; U, fire door and frame; M, bent
leaden pipe forming a still, immersed in the cistern N filled with cold

page_text: to remain an hour or two in the receiver Q, and is then drawn off into
barrels by means of a tap fitted to the receiver. The bi-sulphites thus.
produced, videlicet, either bi-sulphite of soda, bi-sulphite of potash, or bi-
sulphite of ammonia, as the case may be, can then be employed for
bleaching or preparing for dyeing or printing textile fabrics or fibres,
used in the manufacture of textile fabrics in the following manner,
videlicet:- We place the textile fibres or spun or woven material after
being subjected to the ordinary cleaning in a cistern containing a bath
consisting of a mixture of either of the herein-before mentioned bi-sul-.
phites and water, in which the textile fabric or fibres are allowed to
remain the time required for obtaining the effect desired.
Having now described the nature of our said Invention, and the
manner of carrying the same into effect, what we claim as new and
intend to be protected is,―
Firstly. The employment of a blast for the manufacture of bi-sulphites,
obtained as herein-before described.
Secondly. The arrangement and combination of machinery or appa-
ratus for the manufacture of bi-sulphites, substantially as herein-before
described and represented in the accompanying Drawing.
Thirdly. The composition of a bath for bleaching, or preparing for
dyeing or printing the textile fibres or material as herein-before
described.
In witness whereof, we, the said Walter James Turner and Henry
Yewdall, have hereto set our hands and seals, this Twenty-second
day of September, in the year of our Lord One thousand.eight
hundred and sixty-nine.
Witness
W. A. GILBEE.
WALTER JA³. TURNER. (L.S.)
HENRY YEWDALL.
(L.B.)