Improvements in Bronzing Machines.
Year: 1893

page_text: Date of Application, 30th Sept., 1893
Complete Specification Left, 30th June, 1894-Accepted, 4th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Bronzing Machines.
I, FREDERIC MADELEY MOLE, of 36 Cannon Street, in the City of
Birmingham, Printer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to the manner in which I construct and arrange
machines for bronzing or for applying like powder to paper or other material in
the process of printing, the object of my invention being to produce a machine
which while efficiently applying the bronze or like powder to the prepared surface
of the paper, shall be economical as to the extent or amount of powder employed;
and which shall also deliver the printed papers well dusted with their printed
surfaces uppermost after passing through the machine.
In carrying my invention into effect when constructing my machine in one
convenient form for use in an ordinary printing establishment, I arrange side
frames or standards either upon a bed plate capable of being moved about the
establishment to suit the work that is to be performed, or I construct the side
frames with stretcher bars or tie members arranged either as a bed plate or as
girders so that the machine may be employed at any required stationary position
for working by mechanical power or by hand as may be desired.
Between the standards or side frames I mount a number of rollers or bronzing
and dusting spindles which I carry in suitable bearings provided within the
frames, each spindle projecting where so required beyond the bearings, and
carrying upon its end gearing wheels or chain wheels or like cord pulleys, so that
a flying belt or chain or a series of belts or chains set in motion by a main spindle
also carried within the frames, may pass over or partly around these driving
pulleys so as to cause the required speed of rotation of each roller to be readily
produced.
The main driving spindle I prefer to arrange with a pair of ordinary fast and
loose pulleys or their equivalents thereon, and I mount upon this spindle the
necessary chain or other driving wheels which I find desirable in order to give
the proper speeds to the train of bronzing and dusting rollers which I employ.
Wherever necessary I mount tightening or stretching pulleys, carried in sliding or
adjustable bearings or upon adjustable pins, to prevent any slackening of the
driving chains or cords when at work.
I enclose the bronzing and dusting rollers within a case or box like receptacle
having suitable covers and drawers for the purpose of storing and preventing any
escape of the bronzing material from the machine when the papers are passing
through the rollers.
The bronze or powder feeding trough or receptacle I arrange preferably at one
end of my machine, and I mount distributing rollers and conveying rollers in
connection with the bronze receptacle so that the rollers when revolving may pick
up the powder therefrom and transfer it to the paper when passing through the
machine. In connection with the bronze trough I arrange a hopper like case
having a perforated or open bottom upon which I mount a second like perforated
or false plate to which I give a vibratory movement so as to thoroughly sift and
clean the bronze before it enters the roller box below.
I cause the false bottom or slide to travel or vibrate in one convenient manner
by means of a cam upon the end of a roller shaft moving a connected link or lever
backwards and forwards.

page_text: I prefer to arrange my main bronzing rollers so that by opening or drawing out
a portion of the end framework of the machine I can display the rollers and the
trough so that bronze may be readily introduced and any imperfect material may
be removed from the trough and the rollers be readily examined and cleaned. To
facilitate this withdrawal of the end I prefer to arrange my bronzing rollers with
their gearing wheels upon the end to work inside the case or drawer of the machine,
and mount intermediate or idle rollers to convey the motion from one roller to
the other..
I deliver or lay on the paper to be bronzed on to a plate or table within an
opening in which a metal or other hard material roller revolves, so that when
the paper is placed upon the table this roller carries forward the paper and
causes it to pass between a series of brouzing rollers revolving at proportionately
increasing speeds, until it is caught by revolving dusting rollers running within the
same enclosed space of the machine. These dusting or clearing rollers I cover
with plush or like material and I arrange them in pairs one in connection with the
other; their spindles which project beyond the outside framework or standard of
the machine having motion conveyed to them by the flying chain and wheels as
herein before described.
The speeds of the dusting rollers I proportion in such a manner that the paper
in passing through the bronzing rollers is rapidly drawn or drawn at an ever
increasing speed up to the point of entering my intermediate gripping dusting
rollers which I mount within the same case or frame. The intermediate gripping
rollers I cause to revolve at an increased speed to that of the dusting rollers
through which the paper has passed before entering them, so that a better or more
complete dusting may be obtained due to the paper being drawn through the
rollers at a higher speed than that of the rollers themselves.
Similarly I arrange an ever increasing speed upon the second series of dusting
rollers which I mount in the same box or case beyond the intermediate gripping
or pulling rollers, which I speed at a greatly increased ratio beyond that of the
first series, and the train or series I finish by providing a pair of final gripping or
pulling rollers to receive the paper and give it a final acceleration of speed in
passing through the last series of dusters. The papers after passing the last
gripping rollers are delivered face upwards upon a suitable tray or slide arranged
to receive them.
To clean the rollers and dusters I prefer to arrange scrapers or clearing
plates which bear slightly against the surface of the dusters and rollers so that
in revolving the fibres are slightly depressed when the scraper is touched, this
depressing or striking action causing the powder to fall out and to be conveyed
by peculiar directing or baffle tails or plates into the bronze drawers or shelf
below.
The roller spindles I prefer to construct with collars or washers carried upon
them and capable of being secured thereto at any desired position for the purpose
of attaching to and driving the made up central portion of the roller, thus enabling
a ready removal or renewal of the roller to be obtained without disturbing the
framework of my machine.
I may arrange my improved rollers and dusters around or about the machine
framework in any convenient manner to suit the particular class of work that is to
be performed upon the machine, and I modify the driving and gearing arrangements
together with the method of mounting and enclosing the spindles and rollers to suit
any particular requirements.

page_text: Improvements in Bronzing Machines.
I, FREDERIC Madeley Mole, of 36 Cannon Street, in the City of
Birmingham, Printer, 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 :-
This invention has reference to the manner in which I construct and arrange
machines for bronzing or for applying like powder to paper or other material in
the process of printing, the object of my invention being to produce a machine
which, while efficiently applying the bronze or like powder to the prepared surface
of the paper, shall be economical as to the extent or amount of powder employed;
and which shall also deliver the printed papers well dusted with their printed
surfaces uppermost after passing through the machine.
In the three accompanying sheets of drawings-
Figure 1 is a side elevation of my machine having the chain and chain driving
wheels removed.
Figure 2 is a sectional elevation showing the rollers and dusters in position,
and Figure 3 is an end elevation of the same, with the front of casing or box
removed.
Figure 4 is a side elevation showing the chain and wheels for setting the
rolls in motion all in position, and Figure 5 is a front elevation of the same.
Figures 6, 7, and 8 are detail illustrations of the roll and mechanism for
regulating and distributing the bronze.
In carrying my invention into effect when constructing my machine in one
convenient form for use in an ordinary printing establishment, I
arrange side
frames or standards either upon a bed plate capable of being moved about the
establishment to suit the work that is to be performed, or I construct the side
frames A A' with stretcher bars a, or tie members arranged either as a bed plate
or as girders, so that the machine may be employed at any required stationary
position for working by mechanical power or by hand as may be desired.
Between the standards or side frames I mount a number of rollers or bronzing
and dusting spindles B₁ to B", which I carry in suitable bearings provided within
the frames, each spindle projecting where so required beyond the bearings, and
carrying upon its end gearing wheels or chain wheels C or like cord pulleys, so
that a flying belt or chain D or a series of belts or chains D D'D' set in motion by
a main spindle E also carried within the frames may pass over or partly around
these driving pulleys so as to cause the required speed of rotation of each roller to
be readily produced. The main driving spindle E, I prefer to arrange with a pair
of ordinary fast and loose pulley's F F or their equivalents thereon, and I mount
upon this spindle the necessary chain or other driving wheels d, d' d², which I find
desirable in order to give the proper speeds to the train of bronzing and dusting
rollers B, which I employ. Wherever necessary I mount tightening or stretching
pulleys G, carried in sliding or adjustable bearings g, or upon adjustable pins, to
prevent any slackening of the driving chains or cords when at work.
I enclose the bronzing and dusting rollers B¹ to B", within a case or box like
receptacle as, having suitable covers and drawers a¹, a' for the purpose of storing
and preventing any escape of the bronzing material from the machine and a' for
receiving the papers after passing through the rollers.
The bronze or powder feeding trough or receptacle H, I arrange preferably at
one end of my machine, and I mount distributing rollers h and conveying rollers h¹h³
in connection with the bronze receptacle so that the rollers when revolving may
pick up the powder therefrom and transfer it to the paper Z when passing through

page_text: the machine. In connection with the bronze trough I sometimes arrange a hopper
like case having a perforated or open bottom upon which I mount a second like
perforated or false plate to which I may when so desired give a vibratory movement
so as to thoroughly sift and clean the bronze before it enters the roller box below.
I cause the false bottom or slide to travel or vibrate in one convenient manner by
means of a cam upon the end of a roller shaft moving a connected link or lever
backwards and forwards.
I prefer to arrange my main bronzing rollers so that by opening or drawing out
a portion of the end framework of the machine, I can display the rollers and the
trough so that bronze may be readily introduced and any imperfect material may
be removed from the trough and the rollers be readily examined and cleaned. To
facilitate this withdrawal of the end I sometimes arrange my bronzing rollers with
their gearing wheels upon the end to work inside the case or drawer of the machine,
and I mount intermediate or idle rollers to convey the motion from one roller to
the other.
1 deliver or lay on the paper to be bronzed on to a plate or table J, within an
opening J', near which a metal or other hard material roller L revolves, so that
when the paper is placed upon the table this roller carries forward the paper and
causes it to pass between a series of bronzing, gripping and dusting rollers
revolving at proportionately increasing speeds, until it is caught by the revolving
dusting rollers running within the same enclosed space or interior of the case of
the machine. These dusting or clearing rollers B¹ to B18, I cover with plush or
like material, and I arrange them in pairs B, 618 B18, one in connection with the
other; their spindles which project beyond the outside framework or standard of
the machine as shown in Figure 5, having motion conveyed to them by the flying
chains DD D' and chain wheels d, d', d, and ordinary gearing wheels d³ d' as
hereinbefore described, the dotted lines of the pitch circles d' on Figure 1
showing the gearing wheels for conveying motion from one spindle to the other in
the pairs which work together.
The speed of the dusting rollers I make such that the paper passes through them
at an accelerated rate, each pair of rollers being arranged to revolve at a higher
speed than those preceding it so that the action of the dusting rollers may be made
more complete than would be possible by having one uniform pace throughout. I
effect this change of speed conveniently as illustrated in Figure 4 where 6 to 10
form one set driven by the flying chain D and the chain wheel d; the rollers b¹¹
to forming another set driven by the chain D' and the wheel d', while the last
set of gripping rollers 6 and guiding rollers 618 are driven by the chain D' and
and the wheel d². To vary the speed of the rollers working from each chain I
make the diameters and number of teeth larger or smaller as may be desired to
suit the degree of acceleration necessary.
Within my series of rollers I provide intermediate gripping rollers B10 610, B17 617,
which act upon the travelling sheet of paper in a manner to draw it rapidly
through the preceding dusting rollers at a higher speed than the rollers themselves
revolve at. The final gripping rollers B", 6", I make to receive the paper and
impart a final acceleration in speed to it so that a thorough and most complete
dusting may be obtained due to the paper being drawn through the rollers at a
higher speed than the rollers themselves. The papers after passing through my
last guiding rollers B18, 61, are delivered face upwards upon the taking off board
or upon a suitable tray or slide a³, arranged within the case of my machine to
receive them. My directing or guiding rollers B18, 618, I make preferably with
pads or with a number of bands M, upon them so that the paper may not be
completely engaged by the whole surface of the rolls.
To clean the rollers and dusters I prefer to arrange scrapers or clearing
plates L', which bear slightly against the surface of the dusters and rollers so
that in revolving, the fibres are slightly depressed when the scraper is touched,
this depressing or striking action causing the powder to fall out and to be

page_text: conveyed into the
plate a*.
bronze drawers or shel a a апа оп
the Conecting
The roller spindles N, I prefer to construct as shown in Figure 8 with collars or
washers O, carried upon them and capable of being secured thereto at any desired
position for the purpose of attaching to and driving the made up central portion of
the roller, thus enabling a ready removal or renewal of the roller P to be obtained
without disturbing the framework of the machine.
I drive the bronze collecting roller h, by friction with h¹, the roller h¹
being set in motion by the gearing on the roller h' which is also geared to L, and
the roller is driven by idle gearing taking its motion from B'. The gearing h*,
upon the bronze collecting and distributing rollers I prefer to arrange within the
case or framework of my machine as shown in Figure 3. I give the bronze
collecting roller h, a constant or an intermittent motion as may be desired to suit
any particular class of work passing through the machine by means of a ratchet R,
carried upon the end of the roller h, as shown in Figure 3 aud in detail in
Figures 6 and 7. I move the ratchet by means of a pivoted pawl r, and lever rl,
the tail of the lever taking a bearing upon the stepped cam S carried upon the
projecting spindle of the roller B as shown in Figures 2, 6 and 7. I move the
tail on or off the cam surfaces by means of a set screw T so that when the tail is
right off the roller h, may take up bronze continuously and when on one, or the
other of the cam steps, it may work only during portions of the revolution of the
other rollers, the roller being kept from revolving while the pawl is in
contact with the ratchet teeth, the friction driving roller L revolving continuously
meantime.
I employ a cleaner U to revolve against the roller L, giving motion to this
cleaner by means of a small belt, chain U¹ or rubber band.
I cover my bronze collecting roll h preferably with American oil cloth and the
distributing rolls h', h' with ordinary cloth or felt, while my dusting rollers I prefer
to cover some with mohair and others with velvet. The cleaners L', for striking
bronze from the rollers I make of thin metal preferably.
I may arrange my improved rollers and dusters around or about the machine
framework in any convenient manner to suit the particular class of work that is to
be performed upon the machine, and I modify the driving and gearing arrange-
ments together with the method of mounting and enclosing the spindles and rollers
to suit any particular requirements.
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 construction and arrangement of bronzing machines in which the paper
or material to be bronzed is passed through the machine solely by the rolling action
of a series of rollers, without the employment of the ordinary cylinder with
grippers, such rollers being made to revolve at accelerated speeds for the
purpose of completely removing the bronze from both sides of the sheet, the
paper or sheet being finally delivered with its printed face uppermost,
substantially as herein before described and as illustrated in the accompanying
drawings.
2. In a bronzing machine the arrangement of a series of dusting and cleaning
rollers, having intermediate and final gripping rollers arranged in conjunction with
them, the whole being driven from one common main motion or pulley shaft with
driving chains or bands, substantially as and for the purposes hereinbefore described
and as illustrated in the accompanying drawings.
3. In a bronzing machine the combination and arrangement of a series of dusting
and gripping rollers with clearers or scrapers for removing the bronze powder from
the surface of such rollers, and bronze collecting trays or drawers within the
casing or framework of the machine for preventing the escape of the bronze

page_text: powder, substantially
accompanying drawings.
as herein before described and as illustrated in the
Dated this 29th day of June 1894.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.