Improvements in and relating to Apparatus for Preparing Sheet Iron and Steel in the Manufacture of Tin and Terne Plates, or for Galvanizing.
Year: 1897

page_text: Improvements in and relating to Apparatus for Preparing Sheet Iron
and Steel in the Manufacture of Tin and Terne Plates, or for
Galvanizing.
I, THOMAS GWYNNE, of Briton Ferry, in the County of Glamorgan, Tin Plate
Works Manager, do hereby declare the nature of this invention to be as follows:-
My invention relates to apparatus for the preparation of sheet iron and steel
for the manufacture of tin and terne plates or for galvanizing, and more especially
to apparatus of that kind or class described in former Letters Patent grantel
to John David Grey No. 8959 of 1896.
My said invention comprises the improvements hereinafter set forth whereby
I am enabled to pass a larger quantity of plates through the stove in a given
time; to dry the said plates more efficiently; and to obviate, or practically so,
the occurrence of injurious stains upon the said plates now common with the
apparatus heretofore in use.
According to my said invention I provide a furnace or stove built of iron
plates or fire-brick or any other refractory or suitable material the said stove being
practically closed at each end and provided with a suitable narrow door, slot,
or aperture to admit of the introduction and withdrawal of the sheets or plates.
To effect the necessary heating of the stove I provide, moreover, pipes con-
taining superheated or other steam, hot air or the like, which pipes are arranged
longitudinally or transversely in rows one above the other inside the said stove.
At the outside of the stove I provide a set of rollers to carry the plates as they
leave the swilling bath, which rollers remove from the said plates all excessive
moisture and at the same time guide them through the above mentioned narrow
aperture in one end of the stove, from which they fall on a band or chain or
conveyor running between the pipes in the said stove..
The plates then travel or are carried at a suitable speed by the said band to
the other end of the stove where they are removed therefrom through the second
or other aperture.
Whilst travelling between the heated pipes in the stove the moisture remaining
on the plates is evaporated and the said plates are dried.
In some cases I provide suitable perforated pipes and I effect the drying of
the plates by allowing either superheated steam or hot air to escape through the
said holes or slots in the pipes and to impinge upon the plates.
Dated this 5th day of July 1897
A. F. SPOONER,
323, High Holborn, London,
Agent for the Applicant.

page_text: Improvements in and relating to Apparatus for Preparing Sheet Iron
and Steel in the Manufacture of Tin and Terne Plates, or for
Galvanizing.
I, THOMAS GWYNNE, of Briton Ferry, Glamorgan, Tin Plate Works Manager,
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 apparatus for the preparation of sheet iron and steel
for the manufacture of tin and terne plates or for galvanizing, and more especially
to apparatus of that kind or class described in former Letters Patent granted
to John David Grey No. 8,959 of 1896. My said invention comprises the im-
provements hereinafter set forth whereby I am enabled to pass a larger quantity
of plates through the stove in a given time, to dry the said plates more efficiently,
and to obviate, or practically so, the occurrence of injurious stains upon the
said plates now common with the apparatus heretofore in use.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a horizontal section,
Figure 2 is a vertical section, and
Figure 3 is a transverse section showing my improved apparatus.
Like letters indicate corresponding parts throughout the drawing.
a is a furnace or stove built of iron plates or fire-brick or any other refractory
or suitable material the said furnace or stove being practically closed at each
end by plates or doors 6 and provided with suitable narrow slots or aper-
tures 61, 6 to admit of the introduction and withdrawal of the sheets or plates c
to be treated. d is a blast box or chamber which communicates through a
pipe e with any available supply of superheated or surcharged or other steam,
hot air or the like, and f, f are jet pipes communicating with the blast.box or
chamber and which jet pipes f are arranged either transversely as shown, or
longitudinally, or in rows, one above the other or in any convenient manner
inside the furnace or stove a.
9, 9 are rollers connected or geared together by toothed or spur wheels k, h
and which rollers have rotary. motion imparted to them from an electro-motor
or other suitable and available source of power connected to, or gearing with,
the shaft g. The rollers g serve to carry the plates c as they leave the swilling-
bath and to remove from the said plates all excessive moisture, and at the same
time guide them through the above mentioned narrow aperture 6¹ in the plate
or door bat that end of the furnace or stove a, and on to a set of endless wire
ropes, or on to a band, chain, or other suitable conveyor, running between the
jet pipes f.
The endless wire ropes are carried by grooved wheels or pulleys ; supported
on shafts or axlesk, rotatably mounted at the front and rear end of the
furnace or stove a respectively, the shaft or axle being driven by means of
chain gearing from the gudgeon or axle of one of the rollers g, and the shaft
or axle being carried in sliding bearings and provided with a suitable tension
device m.
7
The plates c travel or are carried at a suitable speed by the conveyor i from
the mouth or front end to the other or rear end of the furnace or stove a where
they are removed therefrom through the second or other aperture 6².
It will be seen that whilst travelling between the heated jet pipes f in the

page_text: stove or furnace a any moisture that may have remained on the plates c will
be very rapidly evaporated and the said plates c effectually dried.
In some cases I may suitably perforate the jet pipes f and effect the drying
of the plates c by allowing either superheated or surcharged steam, or hot air,
to escape through the said. perforations, holes, or slots, in the jet pipes f and
to impinge upon the said plates.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. An improved stove, furnace, or apparatus for drying or treating sheet-iron
and steel in the manufacture of tin and terne plates, or for galvanizing, comprising
feeding and drying rollers, a suitable conveyor, and a drying chamber closed at
each end by slotted doors or plates and heated by a row or rows of pipes either
charged with, or discharging, superheated or surcharged or other steam, heated
air, or the like, substantially as and for the purpose hereinbefore specified.
2. The improved stove, furnace, or apparatus constructed substantially as
described and illustrated in the accompanying drawing and operating as and for
the purpose herein before specified.