IMPROVEMENTS IN MACHINERY OR APPARATUS FOR REMOVING SURPLUS BRONZE OR OTHER POWDER FROM PAPER OR OTHER MATERIAL IN THE PROCESS OF COLOUR PRINTING
Year: 1882

page_text: LETTERS PATENT to John Bromley, of Hunslet, Leeds, in the County of York,
Engineer for an Invention of IMPROVEMENTS IN MACHINERY OR APPARATUS
FOR REMOVING SURPLUS BRONZE OR OTHER POWDER FROM PAPER OR OTHER
MATERIAL IN THE PROCESS OF COLOUR PRINTING
PROVISIONAL SPECIFICATION left by the said John Bromley at the Office.
of the Commissioners of Patents on the 1st July 1882.
JOHN BROMLEY, of Hunslet, Leeds, in the County of York, Engineer,
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR REMOVING SURPLUS BRONZE
OR OTHER POWDER FROM PAPER OR OTHER MATERIAL IN THE PROCESS OF COLOUR
PRINTING
"
In the use of bronze or other powder in the process of ornamental or colour
printing, a greater quantity of such powder is allowed to pass upon the paper or
other material than is ultimately required for the ornamentation thereof.
My invention relates to machinery or apparatus having for its object the removal
of the surplus powder from the said paper or other material under operation, more
cheaply and expiditiously than heretofore.
66
The removal of such surplus powder, which is technically called "dusting" has
usually been performed by an attendant who first passes one part of a sheet into a
dusting machine" then withdraws it and passes in the other part which he
withdraws in a similar manner, thus making two operations which are necessarily
slow, and, furthermore, are not capable of being performed until a considerable
time has elapsed after the bronzing process.
Now according to my invention, after the paper or other material has been
passed into a machine or apparatus in which the bronzing operation is performed,
and as it passes therefrom it immediately enters a suitably formed conductor
which guides it into the "bight" of a pair of suitably formed and driven rollers,
which not only draw the paper or other material forward, but by a gentle pressure
cause the powder to adhere so firmly, that it may be immediately subjected to the
dusting process. During this process the paper or other material is caused to pass
CD 037

page_text: through or between a compound or double grating to prevent it from being bucked
or torn by the action of two revolving brushes, one situated above and the other
below the said double grating. The bristles or other equivalent substance of which
the said brushes may be composed pass through or between the meshes or spaces of
the beforementioned grating and remove simultaneously from both surfaces of the
paper or other material, any surplus powder not required for the permanent
ornamentation or printing thereof, such surplus powder being deposited in one or
more receptacles provided for the purpose, ready to be utilized in future bronzing
operations.
The paper or other material having passed through the aforesaid double grating 1
and the two revolving brushes, it is seized by a second pair of rollers, which
continue its forward motion over a table-like surface and under an endless
travelling brush, composed of either soft hair or other suitable material and
running in a crosswise direction. This completes the dusting operation of the
upper surface of the printed paper or other material, which is received by an 1
attendant at the back of the machine.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Bromley in the Great Seal Patent Office on the
30th December 1882.
JOHN BROMLEY, of Hunslet Leeds, in the County of York, Engineer 2
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR REMOVING SURPLUS BRONZE
OR OTHER POWDER FROM PAPER OR OTHER MATERIAL IN THE PROCESS OF COLOUR
PRINTING.
In the use of bronze or other powder in the process of ornamental or colour
printing a greater quantity of such powder is allowed to pass upon the paper or 2
other material than is ultimately required for the ornamentation thereof.
My invention relates to machinery or apparatus having for its object the removal
of the surplus powder from the said paper or other material under operation more
cheaply, effectually and expeditiously than has heretofore been usual.
The removal of such surplus powder, which is technically called "dusting" has 3
usually been performed by an attendant who first passes one part of the sheet
under treatment into a "dusting machine" then withdraws it, and passes in the
other part, which is withdrawn in a similar manner, thus making two operations,
which are necessarily slow, and furthermore are not capable of being performed
until a considerable time has elapsed after the bronzing process.
.
Now according to my invention, after the paper or other material has been
passed into a machine or apparatus in which the bronzing operation is performed,
and as it passes therefrom it is caused to immediately enter a suitably formed
conductor which guides it into the "bight" of a pair of suitably formed rollers, one

page_text: or both of which may be driven, but I prefer to drive the lower one only; the
upper one I cover with India-rubber or its equivalent which by its elastic pressure
causes the powder to adhere so firmly to the said paper or other material that it
may be immediately subjected to the dusting process, during which it is caused to
pass through or between a compound or double grating to prevent it from being
"buckled or torn by the action of two revolving brushes, one situated above and
the other below the said double grating. The bristles (or other equivalent
substance of which the said brushes may be composed) pass through or between
the meshes or spaces of the beforementioned grating and remove simultaneously
from both surfaces of the paper or other material any surplus powder not required
for the permanent ornamentation or printing thereof, such surplus powder being
deposited in one or more receptacles provided for the purpose ready to be utilized
in future bronzing operations.-The paper or other material having passed the
aforesaid double grating and. between the two revolving brushes, is seized by a
second pair of rollers similarly mounted and furnished and driven as the two first
named rollers, which continue its forward motion over a table-like surface and
under an endless travelling brush composed of either soft hair such as camel's hair,
fur, or other suitable material such as a soft textile substance, and which runs in
a crosswise direction, that is at right angles or thereabout to the motion of the afore-
said two revolving brushes.-This completes the "dusting" operation and imparts
a final finish to the upper surface of the printed paper or other material which is
received by an attendant as it leaves the machine. Or instead of being received
by an attendant the printed paper or other material may be allowed to drop into a
receptacle provided for it.-In some cases, whether the said paper or other material
be in sheets or in the web form, as is usual with most kinds of decorative wall
paper, I use a pair of drawing off or delivery rollers at the back of the machine to
remove the paper therefrom and deposit it in or on the abovementioned receptacle.―
The machine may be used either separately or in conjunction with a bronzing
machine as above referred to.
In the accompanying sheet of drawings like parts are marked with the same
letters in the several views wherever such parts appear.-Fig. 1, is a side elevation
of machinery or apparatus according to my invention, Fig. 2, is a front elevation.
The remaining. figures are to an enlarged scale. Fig. 3, is a longitudinal vertical
section in part on the line 1. 1. Fig. 2.—Fig. 4, is a transverse vertical section,
partly on the line 2, 2, and partly on the line 3. 3. Figs 1, and 3,-Fig. 5, is a hori-
zontal section in the line 5, 5. Fig. 3.—and Fig. 6 is a transverse vertical section in the
linė 4, 4. Figs. 1, and 3,-a, is the framework of the machine, b, a counter shaft
with pulleys for imparting motion to the various parts of the machine, c, a table
in front of the machine from which the paper or other material (hereinafter called
the print) is passed into the machine through the mouth or conductor d.―When
my machine is used in conjunction with a bronzing machine, the table c, is made
to join up to the bronzing machine and receives the "print" therefrom, which is
then passed forward into the dusting machine, as above described,―e, e, are the
feed rollers by which the "print" is drawn into the dusting machine and passed
between the double or upper and lower grating f.f-The surface of the upper
roller e, is made elastic so that an elastic pressure is imparted to the surfaces of the
print as it passes between the two rollers as and for the purpose already
mentioned. This grating f, f, prevents the "print" from being buckled or torn by
the action of the top and bottom revolving brushes g, g.-The " print " next
passes between and is continued in its forward movement by the second pair of
rollers h, h, thence under a small revolving roller i, to ensure its passage beneath
the endless cross travelling brush j, which is composed of soft hair or other soft
material as before mentioned, and is driven from the counter shaft b, as shewn at k.-
The tension of this brush can be regulated as required by means of the screw 7,
loops m, and roller n, This endless brush gives the finishing touch to the powdered
surface of the "print," o, o, are the delivery rollers for continuing the motion of
the "print" as before referred to, p, is a hopper-like receptacle for collecting the
"
"

page_text: surplus bronze or other powder, and is furnished with a telescopic pipe q, having a
funnel shaped nozzle for entering a collecting vessel 7, and conducting said powder
thereto,
Having now described the nature of the. said Invention and the manner of
carrying the same into practical effect, I would have it understood that what I
consider to be novel and original and therefore claim as secured to me by the Letters
Patent, herein before first in part recited is
1,-In machinery or apparatus for removing surplus bronze or other powder from
paper or other material in the process of colour printing the use in conjunction
with means for removing surplus powder from paper or other material, of a pair of
rollers for drawing the paper or other material to be treated into the machine, the
arrangement being such that the said material is subjected to elastic pressure
before being acted upon by the dusting apparatus substantially in the manner and
for the purposes herein before described and illustrated.
"
2, The use in conjunction with rollers for drawing into the machine paper or
other material to be treated, of a double grating such as f, f, between the upper
and lower parts of which the paper or other material is caused to pass and whereby
it is protected from injury whilst being operated upon by the dusting apparatus
substantially as herein before described.
3. The use in combination of a pair of rollers e, e, double or upper and lower
grating f, f, revolving brushes g, g, and rollers h, h, the whole arranged and operating
substantially as described and illustrated for the purpose specified.
4, The use in conjunction with an arrangement of mechanism comprising
drawing in rollers e, e, a double grating or guard, dusting apparatus and additional
drawing in rollers h, h, substantially as referred to in claim 3, of an endless cross
travelling brush such as j, for completing the dusting and polishing of the bronzed
or otherwise powdered parts of the paper or other material substantially as herein-
before described and illustrated in the drawings
5. The combination of parts constituting the improved machine for removing
surplus bronze or other powder from paper or other material the whole constructed,
arranged and operating substantially as shewn in and described with reference to
Figs, 1, to 6, inclusive of the drawings.
In Witness whereof I, the said John Bromley have hereunto set my hand and
seal this Twentythird day of December, in the year of our Lord One thousand
eight hundred and eighty two
Witness to the signature of the
said John Bromley,
THOS E CRAVEN C.E.
Patent Agent
24 Victoria Chambers
Leeds
JOHN BROMLEY (L.S.)