Improvements in Apparatus for Boiling Size in Size Boxes and Sizing Machines, Applicable also to other Machines or Apparatus. where an Injection of Steam is Used to Obtain Boiling..
Year: 1887

page_text: Date of Application, 10th Mar., 1887.
Specification Accepted, 15th Apr., 1887.
Improvements in Apparatus for Boiling Size in Size Boxes and
Sizing Machines, Applicable also to other Machines or Apparatus.
where an Injection of Steam is Used to Obtain Boiling..
We JAMES PICKUP and EDWARD PICKUP, manufacturers and JOHN PICKUP,
manager, all of Spring and Isle of Man Mills, Newchurch in Rossendale in the
County of Lancaster 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:-
Our invention relates to apparatus for boiling size in hoiling boxes and for
maintaining the boiling of the size in the sizing troughs of sizing machines and is
also applicable to other machines or apparatus in which the boiling of liquids is
obtained by an injection of steam into such liquids.
The usual arrangement for boiling size or maintaining its boiling consists in.fixing in
the boxes or troughs near the bottom and round the sides steam pipes perforated on
the top with small holes distant about three inches from one another, through which
steam is injected into the size. With this arrangement the size is kept from the pipes
by the steam only at the holes, but is in contact with the steam heated pipes on the
length between the holes and at the sides and bottom of the pipes, in consequence of
which it becomes baked fast on them and the glutinous sacharine and starchy particles
of the flour and other ingredients composing the size become burnt and clog the very
fine steam escape holes. The size becomes discoloured and the scale formed on the
pipes partly breaks off at times, while the boiling is rendered less effectual through
the scale on the pipes and the clogging of some of the holes, so that the size is boiled
unequally in different parts of the trough and badly sized and discoloured warps are
produced. The large deposits of burnt size render the cleaning out of the troughs or
boxes every three or four weeks an unavoidable necessity on which occasion a
considerable quantity of discoloured size from the bottom of the trough has to be
thrown away, while the scale, which frequently attains double the diameter of the
pipes, is so fast that hammers have to be used for knocking it off, whereby the pipes
are more or less injured.
The object of our invention is to obviate these inconveniences, losses and expenses,
and our improvements consist in substituting for the perforated pipes numerous short

page_text: steam nozzles supplied by small pipes from larger steam pipes. Our improved
apparatus is shown by figures 1 and 2 of the drawing appended hereunto, and our
improved nozzle in full size in section by figure 3 and in end view by figure 4.
In applying our invention to a tape sizing machine we surround the sizing box by
steam pipes fitted with valves for the adinission of steam and by preference so
arranged as to have a separate valve for each side and back compartment of the
trough.
These pipes are placed at a distance of ten inches or thereabout from the outside of
the said box. By preference we use cast iron pipes a with a flat part on the side
turned towards the box and into these we screw a series of wrought iron or other
steam pipes of small diameter. Nuts c c are screwed upon these pipes to make
the joint tight in the ordinary manner and other nuts d d to make a joint against the
side e of the box. The pipes bb project a short distance into the inside of the box
and upon their ends we screw short brass nipples or nozzles f. These nozzles are
placed as near to the bottom of the box as possible just leaving room for them to be
turned and screwed upon the ends of the pipes so as to make a joint against the side
of the box. The length of the pipes bb permits the free expansion and contraction of
the steam pipes a without breaking any of the joints. In each nozzle there are two
small steam jet holes g h one on each side of the nozzle, and the nozzle itself is made
with as little surface inside the machine as possible so as to reduce the surface on
which size could be deposited and burnt to a minimum. The position of these steam
escape holes causes the jets of steam to keep the surrounding size from the surface of
the nozzle and thus prevent all burning. As they are placed so as to blow hori
zontally the impetus from one jet counteracts that from the other and the size is not
violently agitated, so that no side-boards are required to protect the warp against
derangement while passing through the machine, while a perfect boiling and
circulation is maintained. The box can be thoroughly cleaned by simply washing it
out with water, there being no necessity for entering it to open the steam jet holes or
remove deposits, no size is spoilt and wasted and the warps are not discoloured but
uniformly sized.
3-
In applying our improvements to the boiling boxes in which the size is boiled
previous to its introduction into the sizing boxes of the machines, we place three or
more, of the cast iron pipes herein before described underneath the bottom of the
machine and arrange the nozzles on the bottom of the boxes, as these are placed in a
raised position affording room for the pipes underneath.
Our improved arrangement of nozzles and pipes is also applicable to slasher sizing
machines and to other apparatus and machines in which an injection of steam through
perforated pipes has hitherto been used to produce and maintain boiling. Instead of
two steam jet holes three or more radiating holes may be used in some cases.
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 is
In apparatus for boiling size in size boxes and sizing machines and in other apparatus
and machines where an injection of steam is used to obtain boiling,
Firstly. The arrangement of short nozzles with radiating steam jet holes connected
by separate pipes of small diameter to larger steam supply pipes, substantially as
herein before described and illustrated by the drawings.
Secondly. The construction of stean nozzles with radiating steam jet holes sub-
stantially as herein before described and illustrated by the drawings.
Dated this 9th day of March 1887
EMMOTT & Co.,
Agents for the Applicants.