IMPROVEMENTS IN STEAM CHESTS FOR HOT-AIR DRYING
Year: 1880

page_text: LETTERS PATENT to Alexander Winward, of Accrington, in the County of
Lancaster, Engineer, for an Invention of "IMPROVEMENTS IN STEAM CHESTS
FOR HOT-AIR DRYING."
PROVISIONAL SPECIFICATION left by the said Alexander Winward at the
Office of the Commissioners of Patents on the 28th February 1880.
ALEXANDER WINWARD, of Accrington, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN STEAM CHESTS FOR HOT-AIR DRYING."
My Invention is applicable to steam chests for drying by hot air woven fabrics,
yarns, and other materials, and it consists in forming steam chests for hot air
drying of tubes, which I prefer to cast together in one sheet. These tubes may be
separate for the greater portion of their length, and connected to each other nt
either end, the tubes opening at each end into a cross pipe or steam way in such a
manner that the steam may pass through them all, or the outsides of the tubes may
be joined to each other by a central web extending the whole of their length. I
place the inlet and outlet pipes for steam, by preference, at the opposite corners
of the chest, but they may be placed in any other convenient position.
By the use of my improvements the danger of explosion common to the old
system of flat steam chests is avoided, and a much greater heating surface is
obtained in a given space; high pressure steam may be used up to one hundred
pounds to the square inch, and with the increased pressure a much bigher
temperature is obtained.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alexander Winward in the Great Seal Patent Office on the 27th
August 1880.
ALEXANDER WINWARD, of Accrington, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN STEAM CHESTS FOR HOT-AIR DRYING."
My Invention is applicable to steam chests for drying by hot air woven fabrics,
yarns, and other materials, and it consists in forming steam chests for hot air
drying of tubes, which I prefer to cast together in one sheet. These tubes may be
separate for the greater portion of their length, and connected to each other at
either end, the tubes opening at each end into a cross pipe or steam way in such a
manner that the steam may pass through them all, or the outsides of the tubes
may be joined to each other by a central web extending the whole of their length.
I place the inlet and outlet pipes for steam, by preference, at the opposite corners
of the chest, but they may be placed in any other convenient position.
And in order that my Invention may be fully understood and readily carried
into effect, I will describe the accompanying Sheet of Drawings, reference being
had to the Figures and letters marked thereon.
Fig. 1 is a cross section, Fig. 2 is a side elevation, and Fig. 3 is an end view of a
steam chest made according to my Invention. a, a, are the tubes cast in one
piece with the cross pipes or steam ways b, b, and c, c, are the inlet and outlet pipes
for steam; d, d, are the bolt holes through which bolts are passed to fix the steam
chests to the framing; any number of steam chests may be bolted together at the
flanges of the inlet and outlet pipes; e, e, are the holes through which the core is
extracted, and which are afterwards plugged. Although I have shown the steam
chest formed of round tubes tubes the tubes may be of any shape, and they may
be bolted together or to the steam ways instead of cast in one piece.
By the use of my improvements high pressure steam may be used up to one
hundred pounds to the square inch, and with the increased pressure a much higher
temperature is obtained, the danger of explosion common to the old systein of fiul
steam chests is avoided, and a much greater heating surface is obtained in a given
врасе.
Having thus stated the nature of my Invention, and described the manner of
performing the same, I declare that I claim the formation of steam chests for hot
air drying, of tubes cast together, substantially as shewn and described.
In witness whereof, I, the said Alexander Winward, have hereunto set my
hand and seal, this Twenty fourth day of August, Ono thousand eight
hundred and eighty.