Improvements in Apparatus for Applying Bronze and other Powder to the Surface of Paper and the like.
Year: 1891

page_text: Date of Application, 1st Oct., 1891
Complete Specification Left, 1st July, 1892-Accepted, 6th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Applying Bronze and other Powder
to the Surface of Paper and the like.
I, GEORGE NEWSUM, of 5 Fairfax Road, Beeston Hill, Leeds, in the County
of York, Printers' Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to certain improvements in apparatus for applying bronze
and other powder to the surface of paper and the like, and has for its object the
construction of the apparatus in such a manner that, the paper or the like is con-
ducted through the same with little liability of being creased or otherwise damaged
and to combine with the cylinder a compound arrangement of grippers and tongues
so constructed that the former will effectually hold the sheet during a certain
portion of the revolution of the cylinder and on the liberation of the sheet for the
tongues to force the edge of the sheet some distance from the circumference of the
cylinder into such position that it is readily conducted so as to pass between rollers
for the purpose of "dusting off" both sides of the paper or the like and automatically
delivering the sheet.
I accomplish my object in the following manner :-On suitable framework I
mount a rotating cylinder provided with one or more plate grippers each being
operated by a quadrant and pinion for securing and liberating the sheets at certain
positions of the revolution and in conjunction with each plate gripper is a series of
tongues which are made to reciprocate to and from the circumference of the
cylinder in accordance with the movements of the plate gripper, so that on the
Liberation of a sheet the tongues protrude beyond the circumference of the cylinder,
thereby forcing the liberated edge of the sheet some distance from the circum-
ference which is conducted forward and the sheet delivered to rotating rollers
which "dust off" or remove any free bronze there may be on either side of the
sheet.
The bronzing is accomplished by suitable rollers depositing the powder on the
surface of the prepared sheets, one of the rollers rotating in a trough containing
the bronze powder which is agitated by a reciprocating bar in order to keep it
loose so that it may be collected and evenly distributed by the rollers on the
paper or the like which is burnished during its passage through the machine by
flexible material stretched across the cylinder rotating over rollers mounted at each
end of the same so that the motion of the flexible material is across the circum-
ference of the cylinder in the direction of its axis.
The paper or the like on leaving the flexible material comes in contact with
several rotating rollers covered with plush fabric, so arranged that the speed of
each roller in advance is quicker than the other so that the last roller rotates con-
siderably quicker than the first, by which means surplus powder is removed and
the paper or the like passed through the apparatus in a straight and stretched
condition which is removed from the cylinder in the manner as hereinbefore
described.
Dated this 29th day of September 1891.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Applying Bronze and other Powder
to the 'Surface of Paper and the like.
I, GEORGE NEWSUM, of 5 Fairfax Road, Beeston Hill, Leeds, in the County
of York, Printers' Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed; to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to certain improvements in apparatus for applying bronze
and other powder to the surface of paper and the like, and has for its object the
construction of the apparatus in such a manner that, the paper or the like is con-
ducted through the machine with little liability of being creased or otherwise
damaged; also to combine with the cylinder of the apparatus a compound arrange-
ment of grippers and tongues so constructed that, the former will effectually hold
the sheet during a certain portion of the revolution of the cylinder and on the
liberation of the sheet, for the grippers to open and the tongues to force the edge
of the sheet some distance from the circumference of the cylinder, into such a
position that it is readily and automatically conducted in the direction so as to
pass between rollers for the purpose of "dusting off" both sides of the paper or
the like and the automatic delivery of the sheet.
In the accompanying drawings
Fig. 1. represents a side elevation of my improved apparatus.
Fig. 2. is a section of the same.
Fig. 3. a plan of a portion of the bronze box and rollers drawn to a larger
scale.
Fig. 4. is a cross section through the same:
Fig. 5. a view of the quadrant and pinion.
Fig. 6. a detailed sectional view through a portion of the cylinder showing a
plate gripper open and the tongues protruding.
Fig. 7. another sectional view through a portion of the cylinder, and
Fig. 8. a view of a portion of the cylinder and a lever for operating the
tongues.
On suitable framework A. 1 mount a rotating cylinder B. provided with one or
more plate grippers C. each mounted on a shaft D. supported by. the ends of
cylinder B. each plate gripper C. is operated by a quadrant E.-mounted free on a
shaft D by one end of the said quadrant coming in contact with a cam plate F.
fixed to the framework A. which keeps the plate gripper open so long as the end
of the quadrant E. is in contact therewith. The opposite end of the quadrant E. is
provided with wheel teeth which gear into a pinion secured on the before mentioned
shaft D. so that on the operation of the quadrant E: in the manner described, or
by a spiral spring when the quadrant is liberated, the pinion and plate gripper C.
are actuated likewise:
In conjunction with each plate gripper C: is' a series of tongues G. attached to
levers H. secured to the shaft D¹ which passes through the cylinder and is thereby
supported. To the opposite end of the shaft to that on which the quadrant-E is
loosely mounted, is secured a lever H' which on coming. in contact with a cam
plate fixed to the framework A. at the opposite side of the machine to cam
plate F. causes tongues G. to protrude beyond the circumference of the cylinder at
the same time the plate gripper C. is opening, thus forcing the liberated edge of
the sheet some distance from the circumference of the cylinder to facilitate the
removal therefrom in the manner as hereinafter described.
The sheets are fed from the board J. in the usual manner and secured by a plate
gripper C. which closes upon the sheet and some soft material such as indin
rubber R. inserted in recesses formed in the cylinder, or attached to the plate

page_text: gripper C. thereby holding the sheet secure immediately the end of quadrant E.
leaves the cam plate F. at F1 thus by these means securing the sheet which is
carried in the direction of the arrow round with the rotating cylinder B. the
distance required for bronzing and dusting.
The bronze or other powder with which the prepared paper or the like is to be
coated, is deposited in the trough K. in which may be placed a grooved bar L.
having an arm L₁ at one end engaging with the groove of a circular cam C¹
mounted on one of the roller shafts; so that, on the rotation of the said cam, the
grooved bar L. is caused to reciprocate in the trough and thereby agitate the
bronze powder, so that it may be collected by the rotating roller M. or any other
well known and suitable mechanical motion may be utilized by which the contents
of the trough K. may be agitated.
The rollers M. and N. are by preference driven by spur gearing, the latter at
the sume surface speed as the cylinder B. the gearing engaging with a spur wheel
mounted on the cylinder shaft. The roller M. rotates in the bronze deposited in
trough K. thereby collecting same on its circumference which is transferred by the
roller O. to the bronzing roller N. in the following manner :- -The roller O. is
supported at each end by a bracket P. each mounted on a stud R' in a manner
that the brackets P. are allowed to oscillate when the roller is operated by a cam Q.
secured on the roller axle and arranged with a portion of its circumference further
from the centre of the axle than the remainder of the cam.
The roller O. is driven by friction, first by contact with the roller M. from the
circumference of which the bronze powder is collected and is transferred to the
bronzing roller N. on the extended portion of the circumference of the cam Q.
coming in contact with the disc Q' secured on the axle or shaft of roller M. by
which means the roller O. is raised clear of roller M. and brought into contact
with the circumference of roller N. thus transferring the bronze or other powder
thereto.
The paper or the like fed to the cylinder B. on passing under the roller N.
receives the bronze powder; the surplus bronze being removed from the paper or
the like, on the sheet passing under the rotating rollers B' which are covered with
soft material such as lambs skin, or circular brushes may be utilized by which the
bronzed parts are burnished and the surplus powder removed which is deposited in
the trough S. The paper or the like continuing its course with the cylinder B.
passes under the rotating brushes or soft covered rollers T. T' and T' driven by a
belt U. passing over pullies P¹ of such varying diameters that each roller in
advance rotates quicker than the other, so that the last roller T rotates quicker
than T and T. and the latter quicker than the burnishing rollers B' which also
rotate quicker than the bronzing roller N. thus by these means, the bronzed portion
is polished and the surplus powder removed from one side of the sheet, the paper
or the like is passed through the apparatus in a straight and stretched condition
and removed therefrom in the manner as hereinafter described.
The rollers T. T and T' are each provided with a small roller or bar V.
placed in contact with the soft pile covering of the said rollers or brushes so that,
by the agitation of the pile or bristles, the bronze is removed therefrom.
On the paper arriving at the point W. the quadrant E. will come in contact
with the fixed cam plate F. and thereby operate a plate gripper C. thus liberating
the sheet, which, as the cylinder B. rotates, continues to travel, falling on to the
rotating rollers Y. Y. somewhat as shown by the line S¹ by which it is conducted
between the soft covered rotating rollers Z. Z. Z. which again dust the sheet, this
time on both sides, the said rollers being driven by a belt or spur gearing, so that
the last pair rotate quicker than the first, thus keeping the paper stretched during
the operation of "dusting off" both sides.
The rollers M. to T. are enclosed within a suitable casing C₁ so that the bronze
or other powder is retained within the machine and prevented flying as is the case
with machines as at present constructed.

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of the rollers M. N. and O. with the cam Q. cam plate Q¹
and the rotating cylinder B. arranged substantially as shown and as bereinbefore
-described.
2. The combination of the rotating cylinder B. having suitable grippers for
holding the paper or the like with the rollers Z. arranged substantially in the
manner as shown and as hereinbefore set forth.
3. The combination of the parts forming the complete bronzing apparatus
arranged substantially in the manner as shown and as hereinbefore set forth.
4. In a bronzing machine the method herein described of keeping the sheets
stretched by the dusting off rollers rotating at varying speeds in combination
with the cylinder B. and rollers Y. and Z.
Dash: noch 1 of To 1900
JOHN WAUGH,
Agent.