apparatus Drying and Coating or Varnishing Metal Plates.
Year: 1885

page_text: apparatus Drying and Coating or
Varnishing Metal Plates.
I, JOHN LYSAGHT of Saint Vincent's Iron Works, Bristol, Engineer do hereby
declare the nature of my invention for "IMPROVEMENTS IN APPARATUS FOR DRYING
AND COATING OR VARNISHING METAL PLATES to be as follows:-
:-
"
The object of this invention is to dry iron and other metal sheets uniformly and
continuously and it may be also in addition to give to them a slight coating of
spirit oil, varnish or other coating as they emerge from the drying apparatus.
The sheets to be dried are fed into the apparatus by a pair of rollers fitted to a
plate or frame which carries guides to guide the sheets onwards to a second pair of
rollers which are covered with india rubber for the purpose of squeezing off any
water which there may be on the surface of the sheets. This second pair of rollers
delivers the sheets on to other guides which lead them to a third pair of rollers and
these in turn deliver the sheets into the interior of a low flat oven or chamber
placed over a fire the flue from which passes around the exterior of the oven and
leads to the exit flue or chimney situated centrally above it.
J
When the sheets have passed through the first oven they enter again between
another pair of rollers which pass them onwards through a second similar oven
from which again they pass to another pair of rollers which cause them to travel
onwards between a pair of brushes which are kept pressed against their upper and
lower surfaces by weighted levers or otherwise; the object of using the brushes
being to coat the surfaces of the plate evenly with a thin coating of spirit varnish
or other coating as may be desired. This spirit varnish or other coating can be
applied to the brushes in any suitable way.'
After passing from the brushes the plates are received on to an inclined table
from which they can be removed by hand.
All of the pairs of rollers hereinbefore mentioned are driven at a uniform surface
speed by means of driving belts or otherwise.
. "

page_text: Varnishing Metal Plates.
I JOHN LYSAGHT of Saint Vincent's Iron Works, Bristol Engineer 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:
The object of this invention is to dry iron and other metal sheets uniformly and
continuously and it may be also in addition to give to them a slight coating of
spirit, oil, varnish or other coating as they emerge from the drying apparatus.
The sheets to be dried are fed into the apparatus by a pair of rollers fitted to a
plate or frame which carries guides to guide the sheets onwards to a second pair of
rollers which are covered with india rubber for the purpose of squeezing off any
water which there may be on the surface of the sheets. This second pair of rollers
delivers the sheets on to other guides which lead them to a third pair of rollers and
these in turn deliver the sheets into the interior of a low flat oven or chamber
placed over a fire the flue from which passes around the exterior of the oven and
leads to the exit flue or chimney situated centrally above it.
When the sheets have passed through the first oven they enter again between
another pair of rollers which pass them onwards through a second similar oven
from which again they pass to another pair of rollers which cause them to trave!
onwards between a pair of brushes which are kept pressed against their upper and
lower surfaces by weighted levers or otherwise; the object of using the brushes
being to coat the surfaces of the plate evenly with a thin coating of spirit varnish
or other coating as may be desired. This spirit varnish or other coating can be
applied to the brushes in any suitable way.
After passing from the brushes the plates are received on to an inclined table
from which they can be removed by hand.
All of the pairs of rollers herein before mentioned are driven at a uniform surface
speed by means of driving belts or otherwise.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan of drying apparatus constructed according to my invention
showing the relative positions of the working parts.
E. Figure 2 is a vertical section or view taken on the line ○ ○ showing the various
parts of the whole apparatus.
.t
A A is a pair of rolls fitted with suitable spring bearings provided with driving
pulleys and geared together with pinions.. These rolls A A convey the plates or
articles along the guides -B -B into the pair of rolls CC which said rolls are covered
with india rubber and also fitted with bearings, pulleys and pinions. The
rolls C. C. convey the plates or articles along the guides D. D. on through other
rolls E. E. which rolls convey the plates or articles through the first drying oven O¹.
Other rolls F. F. carry the plates or articles on through the second dryer O' and
from than that our delimound by wall
through a noin of humahan II TI

page_text: apply a liquid coating. J. J.are tables or platforms, for depositing the plates or
articles before, and after passing through the drying apparatus. K are pulleys all
of a given size which give the whole apparatus one uniforin speed.
The drying ovens.0102 as will be seen consist of cast iron slabs set in a furnace
so that the heat from a fire below has free access to the under surface of the lower
slab and the top surface of the upper slab, and between the two slabs is sufficient
space for the free passage of the plates or other articles to be dried.
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.) The combination of conveying rollers, guides and drying oven or ovens
whereby plates or other articles are continuously carried forward at a suitable speed
and dried substantially as described.
(2.) The further combination with such rollers, guides and oven, of india rubber
covered pressing rollers which aid in drying the plates or other article by stopping
back the moisture which they carry on their surface substantially as described.
(3.) The further combination with such rollers, guides and oven of brushes
serving automatically to apply a varnish or liquid to the surfaces of the plates or
other articles as they issue from the oven substantially as described.
(4.) The arrangement of apparatus substantially as described and represented by
the annexed drawings.
CARPMAEL & Co.,
Agents for the Applicant.