Improvements in or connected with the Brushing-out Process in the Manufacture of Lettered or Decorated Enamelled, Metal, or Glass Plates, or other similar Surfaces.
Year: 1889

page_text: Date of Application, 16th Oct., 1889
Complete Specification Left, 16th July, 1890-Accepted, 16th Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Brushing-out Process in the
Manufacture of Lettered or Decorated Enamelled, Metal, or Glass
Plates, or other similar Surfaces.
I, RUPERT BENJAMIN BAUGH, of Erceldeane, Wake Green Road, Moseley, in the
County of Worcester, Gentleman, do hereby declare the nature of this invention to be
as follows:-
This invention relates to the manufacture of lettered or decorated plates, such as
enamelled plates, metallic plates, or glass surfaces, and more especially the former, and
particularly to that part of their manufacture when certain parts of the coating which has
been laid thereon is removed by means of stencil plates, and hand brushes; and its object
is, to remove such parts of the coating, by means of compressed air blast, and in the
case of enamelled plates, to combine therewith granulated particles of similar enamel
powder to that which is removed; also in the construction and arrangement of the
stencil plates therefor.
The blast is conveyed in any ordinary arrangement of piping &c., either to a point
above the table upon which the plates to be treated are placed, or to the side of the
same, generally however, the former. From thence it is carried in a flexible tube
provided with a suitable nozzle.
The enamel to be used is then prepared from the same kind as that which is to be
removed, and is pulverized &c. to the required fineness, with but little or no cut upon
it, so that when blown on to the surface to be removed, it shall not penetrate or cut
the harder surface below, but leave the stencil portions cut away clean to such
surface.
This combination of similar enamel material is important, inasmuch as, were sand
or other material to be used, the enamel removed would be of no value, but by this
my method, that which is removed, can, together with that which is employed, be
re-used to coat other plates, and thus avoids waste.
Again. In constructing the stencil plates; these may in some cases be of the
ordinary kind, but generally they would consist of thicker material, and in some cases
having their faces covered with india-rubber, in order that they may lie close down
flat to the surface of the enamelled plate. In connecting or fixing the mid portions
forming the letters &c. however, flat strip connecting pieces are used, which necessarily
leaves a space beneath, equal to the thickness of the said plates, which space permits
of the blast and enamel to pass under and remove the required portion.
As before intimated, these my improvements apply to the engraving, embossing, or
decorating, also of glass and metallic surfaces where portions of any (preparatory)
coating requires to be removed, to form letters or other figures, without damaging
the surface below.
FL
CHARLES T. POWELL,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with the Brushing-out Process in the
Manufacture of Lettered or Decorated Enamelled, Metal, or Glass
Plates, or other similar Surfaces.
I RUPERT BENJAMIN BAUGH, of Erceldeane, Wake Green Road Moseley, in the
County of Worcester Gentleman, 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:
0
This invention relates to the manufacture of lettered or decorated plates, such

page_text: as enamelled plates, metallic plates, or glass surfaces, and more especially the former,
and particularly to that part of their manufacture when certain parts of the coating
which has been laid thereon is removed by means of stencil plates, and hand brushes;
and its object is, to remove such parts of the coating, by means of compressed air
blast and powder and in the case of enamelled plates, to combine therewith granulated
particles of similar enamel powder to that which is removed; also in the construction
and arrangement of the stencil plates therefor.
In order for the better explanation of this my invention, I have appended hereunto
an illustrative sheet of drawings, upon which are figures and letters of reference, in
which Fig. 1 shows the method of applying the blast &c. to the stencil-plates, and
Fig. 2 shows in detail the stencil as used where a bridge part is necessary, Fig. 3 being
a sectional elevation of Fig. 2.
The blast is conveyed in any ordinary arrangement of piping &c., either to a point
above the table a, upon which the plates to be treated are placed, or, to the side of the
same, generally however, the former.
From thence it is carried in a flexible tube b provided with a suitable nozzle c.
The enamel to be used is then prepared from the same kind as that which is to be
removed, and is pulverised &c. to the required fineness, with but little or no cut upon
it, so that when blown on to the surface to be removed, it shall not penetrate or cut
the harder surface below, but leave the stencil portions cut away clean to such
surfaces.
This combination of similar enamel material is important, inasmuch as, were sand
or other usual cutting material to be used, the enamel removed would be of no value,
but by this my method, that which is removed can, together with that which is
employed, be re-used to coat other plates, and thus avoids waste.
Again. In constructing the stencil plates; these may in some cases be of the
ordinary kind, but generally they would consist of thicker material, and have their
upper faces covered with india-rubber, gutta percha or other similar substance.
I find that by giving such a coating to the plates, which is softer than the metal,
the blast powder is less likely to damage them, than if the metallic surface of such
stencil plates were exposed.
In connecting or fixing the mid-portions forming the letters &c. however, flat strip
connecting pieces d are used, which provides or leaves a space e beneath, which space
permits of the blast and enamel to pass under and remove the required portions.
As before intimated, these my improvements apply to the engraving, embossing, or
decorating, both of glass and metallic surfaces, where portions of any (preparatory)
coating requires to be removed, to form letters or other figures, without damaging
the surface below.
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 :-
1st. Removing parts of previously coated surfaces of enamel, or colour, by the
arrangement and method hereinbefor described and illustrated that is to say, by
means of the compressed air and similar particles of material to that which is removed,
and stencil plates, all substantially as set forth.
2nd. Making the stencils with a coated surface of india-rubber, gelatine, guttapercha,
or other similar substance, as a protection for the stencils from the cutting action
of the blast enamel, as herein set forth.
DL
1508
CHARLES T. POWELL,
Applicant's Agent.