APPARATUS OR APPLIANCES TO BE USED IN STENCILLING FOR ENAMELLED IRON to be as follows:
Year: 1884

page_text: Enamelled Iron.
I GEORGE JAMES RHODES of N° 35, Dudley Road, Wolverhampton in the County
of Stafford Enameller do hereby declare the nature of my said invention for
" APPARATUS OR APPLIANCES TO BE USED IN STENCILLING FOR ENAMELLED IRON
to be as follows:—
"
In preparing iron plates for being enamelled with letters or other marks or
designs, it is usual to cover the surface of the plate with pulverised ceramic
pigment and to place over the pigment dust, a stencil, that is to say a sheet of
paper, card, thin metal or other material having holes through it corresponding to
those parts of the design in which the particular pigment is not required.
These parts are then brushed over by hand so as to remove the pigment wherever
there is a hole in the stencil. This brushing by hand involves considerable labor
and trouble in keeping the stencil in position, it is often carelessly done, the brushes
frequently injure the edges of the stencil, holes, and the dust that is removed
being generally of a poisonous character, seriously affects the health of the operator.
My invention relates to means of applying to enamelling stencils instead of hand
brushes, mechanically driven rotating brushes in combination with arrangements
for holding the stencil in position and protecting the operator from the injurious
effects of the dispersed pigment dust.
The rotating brushes may be applied in either of two ways. The brush, while
it is caused to rotate by a band, as those used by hair dressers, may be moved by
hand to and fro' over the stencil which remains stationary; or the brush may be
made to revolve in bearings in a fixed framing while the stencil is caused to
traverse under it.. In either case I partly surround the brush by a curved shield
of sheet metal, this shield being made with a slot at one part of its circumference,
through which the bristles project so as to act on the stencil, and with an opening
at another part for the expulsion of the dust in a direction away from the operator.
The shield of the moveable brush is conveniently made as an elastic volute of sheet
metal or other elastic material so that the two sides of the slot through which the-
bristles project being pressed down elastically on the stencil, hold it firmly in
position while the brush operates in the space between those sides. The brush,
5 Daine 77

page_text: instead of being held by both hands applied to its axle, one on each side, may have
its axle held by a hand at one side and moved along a guide bar, or a slot in
a guide bar held by the other hand. In this case, the shield may be attached to
the guide. When the brush is stationary while the plate is moved under it,
I make the bearings of the brush adjustable vertically so that it can be lowered
or raised while it revolves, and I cause the table carrying the plate or stencil to
move under it by means of a rack and pinion or equivalent mechanism. When the
apparatus is thus arranged, I prefer to apply over the stencil, so as to hold it in
position and partly protect it, a hinged sheet which can be folded down over the
stencil as the tympan of a hand printing press is folded down over the forme, the
sheet in this case having holes through it approximately corresponding with those
of the stencil.
Enamelled Iron.
I, GEORGE JAMES RHODES of No. 35 Dudley Road, Wolverhampton in the County
of Stafford do hereby declare the nature of my invention for APPARATUS OR
APPLIANCES TO BE USED IN STENCILLING FOR ENAMELLED IRON and in what
manner the same is to be performed, to be particularly described' and, ascertained
in and by the following statement:-
In preparing Iron plates for being enamelled with letters or other marks or
designs it is usual to cover the surface of the plate with pulverized ceramic
pigment, and to place over the dried pigment, a stencil that is to say a sheet of
paper, card, thin metal or other material, having holes through it corresponding
to those parts of the designs in which the paticular pigment is not required.
These parts are then brushed over by hand so as to remove the pigment wherever
required, and so lay bare the plate wherever there is a hole in the stencil. This
brushing by hand involves considerable labour and trouble in keeping the stencil
in position, it is often carelessly done, the brushes frequently injure the edges of
the stencil holes, and, the dust that is removed, being generally of a poisonous
character, seriously affects the health of the operator. My invention relates to
means of applying to enamelling stencils instead of hand brushes, mechanically
driven rotating brushes in combination with arrangements for holding the stencil
in position and protecting the operator from the injurious effects of the dispersed
nirmant dust

page_text: The rotating brushes may be applied in either of two ways. The brush while
it is caused to rotate by a band, as those used by hair dressers may be moved by
hand to and fro' over the stencil which remains stationary (see illustration 5, 6,
and 7) or the brush may be made to revolve in bearings in a fixed fraining while
the stencil is caused to traverse under it (See illustration nos. 1 and 2.) In either
case I partly surround the brush by a curved shield of sheet metal (B figure 3, 4,
5, 6, 7) this shield being made with a slot (B Fig. 3) at one part of its circum-
ference, through which the bristles project so as to act on the stencil and with an
opening at another part for the expulsion of the dust in a direction away from the
operator. The shield of the moveable brush is conveniently made as an elastic
volute of sheet metal or other elastic material so that the two sides of the slot
through which the bristles project being pressed down elastically on the stencil,
hold it firmly in position while the brush operates in the space between those
sides. The brush instead of being held by both hands applied to its axle one on
each side (see Fig. 6 No 7) may have its axle held by a hand at one side and moved
along a guide bar or a slot in guide bar or bars, (fig.) held by the other hand. In
this case the shield may be attached to the guide. When the brush is stationary
while the plate is moved under it, I make the bearings of the brush adjustable
vertically so that it can be lowered or raised while it revolves, and I cause the
table carrying the plate or stencil to move under it by means of a rack and pinion
or equivalent mechanism. When the apparatus is thus arranged, I prefer to apply
over the stencil; so as to hold it in position and partly protect it, a hinged sheet
which can be folded down over the stencil as the tympan of a hand printing press
is folded down over the forme; the sheet in this case having holes through it
approximately corresponding with those of the stencil.
Fig. 1. is a side view. Fig. 2 end view.
A. Framework of machine.
B. Table for holding work traversing by means of rack F. and pinion P. on
shaft O.
C. Joint by which the Tympan and table are connected.
D. Tympam to which the stencil is fastened.
E. Stops for fastening plate on to table.
F. Rack for traversing table.
G. Handle moving table.
H. Brackets for carrying brush.
I. Position of enamelled plate while operated upon,
J. Carrier for revolving brush.
K. Pully driving brush.
L. Driving drum overhead. -
M. Handle to traverse the brush across the plate.
N. Shield for brush.
O. Main shaft.
Fig. 3. Sheet steel shield before being bent.
Fig. 4. Shield after being bent and fixed in position for attaching to machine
figures No. 1 & 2.
Fig. 5. Small hand machine with shield.
Fig. 6. is small hand machine attached to light frame.
Fig. 7. is a plan of Fig. 6.