Improvements in or connected with Machinery or Apparatus for Distributing Metallic or other Dust on a Previously Prepared Surface, and also for Burnishing and Dusting same.
Year: 1892

page_text: Date of Application, 25th Feb., 1892
Complete Specification Left, 25th Nov., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Machinery or Apparatus for
Distributing Metallic or other Dust on a Previously Prepared
Surface, and also for Burnishing and Dusting same.
I, EDMUND BUSH, of 10 Stratford Street, Dewsbury Road, Leeds, in the
County. of York, Engineer, do hereby declare the nature of this invention to he as
follows:-
:-
The object of my invention is to produce a machine or apparatus for distributing
metallic or other dust on a previously printed or prepared surface, on which the
dust adheres, and is then burnished and dusted consecutively in one and the same
machine.
In machines hitherto constructed, the work done has not proved satisfactory, as
the supply of dust has been irregular and the burnishing and dusting inefficiently
performed.
According to my invention I provide a table having a roller at each end, the
upper surfaces of which rollers are at or about the same height as the upper surface
of the table. An endless sheet of material, which may be preferably made of
india-rubber, passes round the said rollers, thus forming a movable surface to the
table. One or both of the rollers is or are connected to a pulley so that the table
surface may be made to advance at any required speed.
In front of the table and above the level of same, I. provide a hopper for the
purpose of feeding the dust to the sheet of printed material. At the base of, this
hopper is a longitudinal slot, which may be varied in width by adjusting a lower
plate. Within this slot I arrange a strip of metal or other suitable material, which
strip is of or about the same width as the slot, and is cut away, leaving projecting
parts on same, such projecting parts being at the same level as the lower plate of
the hopper. The said strip receives a reciprocating motion, whereby the slot is
constantly cleared, and any clogging or uneven feed from the hopper is prevented.
Below the feed hopper I provide a suitable grating or grid to support the material
being fed to the table, whilst at the same time the dust is free to pass through such
grating or grid, when there is no material thereon. The dust passing through the
grating or grid falls into an overflow hopper from whence it is withdrawn by
a worm and then raised to the feed hopper by a helical elevator.
Over the table and at the front end of the machine I provide two or more endless
soft brushes which run in contrary directions over pulleys, on either side of the
table. The lower surface of these brushes bears against the movable surface of the
table, and they are for spreading the bronze or other dust more evenly than
heretofore on the printed or prepared surface.
Beyond these soft brushes I provide two, three, or more burnishing brushes,
which are reciprocated across the table by means of eccentrics, cams, or cranks, the
brush surface bearing on the table. The pressure of these burnishing brushes may
be adjusted by screws or by any other convenient means.
Beyond these burnishers I provide another set of endless soft brushes, similar to
those used in the front of the machine, which are for the purpose of clearing away
any superfluous dust remaining on the printed sheet. At the back of the table I
provide two cylindrical dusters working in contact with each other, and in such a
position as to receive the material between them as it passes from the table. These
cylindrical dusters are made to revolve at a higher speed than that of the table
surface, and thus efficiently dust and finish the bronzed or otherwise decorated or
coated sheet.
At convenient distances apart, between the brushes and burnishers, I provide

page_text: rollers to keep the material down on the movable table, as it is fed to the various
brushes and burnishers.
The tightness of the endless brushes may be altered by adjusting one of the
bearing rollers, and the brushes and burnishers may be of any strength or softness
to suit the requirements of the material to be treated.
Dated this 25th day of Wahruary 1905
BREWER & SON,
Leeds and London, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Machinery or Apparatus for
Distributing Metallic or other Dust on a Previously Prepared
Surface, and also for Burnishing and Dusting same.
I, EDMUND BUSH, of 10 Stratford Street, Dewsbury Road, Leeds, in. the
County of York, 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 :-
The object of my invention is to construct improved machines or apparatus for
distributing metallic or other dust on a previously printed or prepared surface, on
which the dust adheres, and is then burnished and dusted consecutively in one and
the same machine.
In order that my invention may be clearly understood, I will proceed to describe
same with reference to the accompanying drawings, in which similar letters refer to
like parts in all the figures..
Fig. 1 is a side elevation of a machine constructed according to my invention.
Fig. 2 is a longitudinal section, drawn to a larger scale than the previous figure,
shewing as much of same machine as is required to illustrate my invention.
Fig. 3 is a sectional plan shewing interior of said machine.
Figs. 4 and 5 are cross sections of parts of said machine.
According to my invention I provide a table A having rollers B and C. situated
at each end of same, and the upper surfaces of these rollers are at or about the
same height as the upper surface of the table. Around these rollers B and C
passes an endless sheet D, which may be of any suitable material, though I have
found india rubber to answer the purpose well, and the sheet D thus forms a movable
surface to the table A.
A pulley E is mounted on the roller shaft B', and a band E' connects the pulley E
with a pulley F1 situated on the main driving shaft F, whereby the sheet D
forming the table surface may be made to move forward at any required speed:
Above the level of the table A and in front of same, I provide a hopper G for
the purpose of receiving and feeding the dust to the sheet of printed or prepared
material. At the base of the hopper G is a plate G which may be adjusted by
means of screws G or by any other suitable means, and so regulate the flow or
feed of the dust. G³ is a worm for more evenly distributing the dust in the
hopper G. In the drawings I have shewn a cylindrical brush G³ for keeping the
slot clear and the flow more even, but sometimes I find it more convenient to
employ in combination a strip of metal or other suitable material, which strip is of
or about the same width as the slot, and is cut away, leaving projecting parts on
same which work in the slot or feed opening and against the brush. The said strip
receives a reciprocating motion, whereby the slot is constantly cleared, and clogging
or uneven feed of the dust prevented. Below the hopper GI provide a suitable
grating or grid H for the purpose of supporting the material as it is fed onto the
travelling surface or sheet D, whilst at the same time the dust is free to pass
through such grating or grid H when there is no material thereon. The dust
passing through the grating or grid H falls into an overflow hopper J, from whence.

page_text: it is withdrawn by a worm J, and then raised to the feed hopper G by a helical
elevator K, operated by bevel gearing K', such bevel gearing being driven from
the driving shaft F by pulley K, band K³, and pulley K.
At the front end of the machine I provide two endless soft brushes L L, which
run over pulleys M and M' arranged on either side of the table A, and if required
these brushes L L may be made to run in contrary directions. The lower surface
of these brushes L L bears against the movable surface or sheet D of the table A,
such brushes I. L being for the purpose of spreading the bronze or other dust
evenly over the printed or prepared surface. The pulleys M' are mounted on
adjustable brackets M2 having screws M³ passing through the outer casing. These
screws M may be adjusted by nuts M, or by any other suitable means, and
thus the brushes L L may be tightened or loosened as required.
NNN are the buruishing brushes, which are reciprocated across the surface D
by the eccentrics N'N' N, which are mounted on the shaft N². N³ are the
eccentric rods which are jointed to the brackets N of the brushes N N N.
Slides No pass through adjustable bearings N°, which latter may be adjusted up or
down by screws N7, and so make the brushes N N N press down onto the surface D
with any required force.
Beyond these burnishers I provide another pair of endless brushes L'LA, similar.
to those employed in the front end of the machine, which brushes L' L' are for
the purpose of clearing away any superfluous dust remaining on the printed or
prepared sheet, as it passes through the machine.
<
I provide two cylindrical dusters, 0, 0, at the back of the machine, working in
contact with each other, and in such a position as to receive the material between
them as it passes from the travelling sheet D. These dusters 0 0 revolve at a
higher speed than the table surface D, and thus efficiently dust and finish the
bronzed or otherwise decorated or coated sheet. The dusters OO have on their
outer ends the pulleys O¹, which are driven by the band O2 from pulley O' on the
driving shaft F.
The superfluous dust, which is brashed off the material in passing through the
machine, falls down into the hopper J2, from which it can be removed at pleasure
by unscrewing the cap .J³.
Between the brushes and burnishers I provide rollers P which are for keeping
the material down on the movable surface D, as such material is fed to the various
brushes and burnishers.
The brushes and burnishers may be of any strength or softness to suit the
requirements of the material to be treated.
Instead of the burnishers N all having a reciprocating action, the centre one.
may be a rotary burnisher, and in revolving, the said rotary burnisher may be
made to reciprocate the two other burnishers, in which case the eccentrics N' could
be dispensed with.
Q is the feed table on which the material is laid prior to passing through the
nachine, and R is a light brush, which stretches across and closes the opening S.
The action of the machine is as follows:-The printed or otherwise prepared
sheet is placed on the table Q and fed through the opening S beneath the brush R
and over the grid H onto the travelling surface D. In passing over the grid H it
receives the powder onto its surface as it falls from the hopper G. The powder is
then evenly distributed by the brushes L L, and then burnished by the
burnishers N N N, after which the sheet is dusted by the brushes L' L' and OO,
which remove any superfluous powder that may remain on the surface. During
this operation the rollers P hold the material down on the travelling sheet D, as
without these rollers such material would probably curl up at the edges, as is often
he case with machines previously employed.
It is to be understood that I reserve to myself the right to vary the number or
position of the brushes and burnishers, employed in carrying out the above
nvention.
By the employment of machines constructed according to my invention, greater

page_text: efficiency in burnishing is obtained, whilst at the same time a great saving of the
powder or dust is effected.
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. In machines for distributing metallic or other dust on a previously prepared
surface, a table having a travelling surface in combination with reciprocating
brushes or burnishers substantially as described and shewn, together with any mere
modification or modifications thereof.
2. In machines for distributing metallic or other dust on a previously prepared
surface, the hopper for feeding the powder to the material having a slot which can
be regulated in width by an adjustable plate substantially as described and shewn
in the accompanying drawings.
3. In machines for distributing metallic or other dust on a previously prepared
surface, the helical elevator K for raising the dust from the hopper J to the delivery
hopper G substantially as described and shewn in the accompanying drawings.
4. The general arrangement, construction, and combination of the various parts
forming the machine, for distributing metallic or other dust on a previously prepared
surface and for burnishing and dusting same, substantially as herein set forth, and
as illustrated in the various figures of the accompanying drawings together with
any mere modification or modifications thereof.
Dated this 25th day of November 1892.
EDMUND BUSH..
Brewer & Son,
London and Leeds.