An Improved Bronzing and Dusting Machine.
Year: 1892

page_text: Date of Application, 3rd May, 1892
Complete Specification Left, 1st Feb., 1893-Accepted, 3rd May, 1893
PROVISIONAL SPECIFICATION.
An Improved Bronzing and Dusting Machine.
WILLIAM ALFRED SIMMONS Lithographic Printer 32 Howbury Road
Nunhead S.E. do hereby declare the nature of this invention to be as follows:-
An apparatus for bronzing, burnishing and dusting printed work from litho-
graphic letterpress, and wall paper printing machines.
It consists of three rollers a bronzer, a burnisher, and a duster. The apparatus
can be applied to any cylinder machine, and is actuated by that to which it is
attached.
The bronze or color is supplied to the bronze roller by a telescopic perforated
roller covered with plush or other material likewise perforated. The burnishing
roller is covered with plush or other material for working in the bronze supplied
by the bronzing roller.
The dusting roller is covered with plush or any other material, with an endless
band composed of cambric, silk, or other material for dusting and removing all
superfluous bronze or color from the surface of the printed sheet, thus finishing the
operation.
There is a brush against which the endless band in revolving passes for cleaning,
thus ensuring a clean duster for every sheet printed.
The three rollers will be caused to revolve at a high rate of speed to ensure the
work being perfectly done by one revolution of the cylinder.
Dated this 2nd May 1892.
WILLIAM ALFRED SIMMONS.
COMPLETE SPECIFICATION.
An Improved Bronzing and Dusting Machine,
WILLIAM ALFRED SIMMONS, Lithographic Printer, 32 Howbury Road
Nunhead S.E. 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 can be attached to any lithographic or letterpress cylinder
printing machine, or any machine used for printing wall papers, and is for the
purpose of bronzing or colouring printed matter at the time of printing, and for
dusting off all superfluous bronze at the same operation. The apparatus consists of
a box (marked D in the drawing) constructed of wood or any suitable material,
containing three rollers-a (Fig. 1) a telescopic perforated tube roller, in which
the bronze or colouring matter is contained; b, the burnishing roller, covered with
plush or any other suitable material, which by its action polishes the bronze or
colour immediately after it is applied by the roller a; c, the dusting rollers covered
with an endless band of cambric or other suitable material, which removes any
superfluous bronze or colour that may have been left on the printed sheet. In
order that the dusting-off band (see c c Fig. 1, showing cross-section of box con-
taining working parts) shall always present a clean surface to the printed sheet, a
brush d (Fig. 1) removes all such superfluous bronze or colour. The roller a is
covered on its outer surface with sheepskin or other suitable material which is
perforated to correspond with roller a and a'. Thus when the apertures are
wide open a full supply of bronze or colouring matter is ejected from the inner
tube a, and thus on to the wool which conveys it to the printed matter.
where a smaller supply of bronze is needed for the work, it can be cut off
In cases

page_text: (Fig. 6) which represents the cap of the bronzer, and is provided with a blade or
knife-edge catch (f) working in slots which will regulate the supply of bronze
throughout the full length of the roller; but when only a portion of the bronze
roller is needed to eject the bronze the powder is confined within the length desired
by discs; g (Fig. 4, cross-section of bronzing roller) are the sockets slotted to
receive the pins on the cap e. By the provision made in Figs. 4, 5, & 6 for easily
regulating the supply of bronze, the lightest or the heaviest work can be effectually
dealt with. The box D (Fig. 1) containing the rollers is fitted to the form of the
printing machine cylinder A (Fig. 1) and is attached to the frame of the printing
machine (B) while brackets (C) carrying the spindle E (Fig. 2, longitudinal
section of box) are attached to the box by screws (marked F). In order to bring
the rollers into action a circular rack (i Fig. 8 showing end portion of side elevation)
is affixed to the end of the printing machine cylinder which when the printing
machine is in motion actuates the small pinions 1, 2, and 3 (Fig. 8) thereby giving
motion to all the rollers. As however the rollers are only needed to revolve on
the printing surface of the printing machine cylinder or a portion thereof, a ring k
(Fig. 8) is perforated on its periphery with holes to receive a screw lift (m) which
by the travel of the printing machine cylinder is brought into contact with the
levers (Fig. 7 and 8) thus throwing the rollers and out of gear at will. The
bronze being confined in roller a, touches the printed matter only when actually
needed, and any superfluous bronze which may collect on the printed sheet is
swept off by the dusters c, and by the brush d the band is kept clean. The bronze
or colouring matter is fed into the roller a' from the end of box D.
et
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is-
1. A bronze roller in which the bronze is confined.
2. An apparatus adaptable to any cylinder printing machine.
Dated this 21st day of January 1802
WILLIAM ALFRED SIMMONS.