Improvements in Apparatus for Exhibiting Advertisements, Notices, and the like.
Year: 1886

page_text: Date of Application, 18th Dec., 1886.
Complete Left, 25th Aug., 1887.
Complete Accepted, 4th Oct., 1887.
RESENT
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Exhibiting Advertisements,
Notices, and the like.
FREDERICK WILLIAM HEMBRY 16 Newgate Street, E.C. in the City of London,
Manager to the firm of Messrs. B. Hembry & Co. Linoleum Merchants 16 Nowgate
Street London and 43 Cross Street Manchester, do horeby declare the nature of my
invention for IMPROVEMENTS IN AN APPARATUS FOR EXHIBITING ADVERTISEMENTS,
NOTICES AND THE LIKE to be as follows:-
That in order that business and other notices or advertisements may be the better
and more attractively displayed especially at night or in dark places, I construct a
frame, preferably of metal, into which I place one or more stencils of glass, metal or
wood with the matter to be displayed thereon, and behind this so called stencil I have
a circular, square or other shaped disk of variously coloured silk, glass paper or other
semi-transparent media which I cause to rotate by falling sand, clockwork or any kind
of mechanical contrivance, in a plane with and behind the said stencil, and this being
illuminated by gas or other light will cause the notice or advertisement to change
continually in colour and by using two or more such like rotating discs, a further and
more varied display of colour is obtained in every transparent portion of the
advertisement.
In order that it shall not be necessary always to exhibit and illuminate the same
advertisement notice, or design I make provision in the frame for the stencil front to
be removed and substituted by another at will so that a daily or more frequent change
may be made.
This apparatus can be used in any shop window, railway station or hoarding and is
as useful by day as by night.
I claim for this Invention that it is far cheaper to produce than any other mechanical
advertisement and its absolute inability to get out of order, and that there is no limit
to the size or shape it may assume.
Dated this 16th day of December 1886.

page_text: COMPLETE SPECIFICATION.
Improvements in an Apparatus for Exhibiting Advertisements,
Notices, and the like.
FREDERICK WILLIAM HEMBRY 16 Newgate Street, London, E.C. Manager to
B. Hembry & Co. of Newgate Street, London and 43 Cross Street, Manchester, do
hereby declare the nature of my said invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement-
.
In order that business and other notices or advertisements may be the better and
more attractively displayed especially at night or in dark places, I construct a frame
or box, preferably of metal into which I place one or more stencils of glass, metal or
wood with the matter to be displayed thereon and behind this so called stencil I havo
a circular, square or other shaped disc of variously coloured silk, glass, paper or other
transparent or semi-transparent media which I cause to rotate by falling sand, clock-
work or any other mechanical contrivance in a plane with and behind the said stencil
and this being illuminated by gas or other light will cause the notice or advertisement
to change continually in colour, and by using two or more such like rotating discs a
further and more varied display of colour is obtained in every transparent portion of
the advertisement.
In order that it shall not be necessary always to exhibit and illuminate the same
notice or design I make provision in the frame or box for the stencil front to be
removed and substituted by another at will so that a daily or more frequent change
may be made. This apparatus can be used in any shop window, railway station or
hoarding and is as useful by day as by night.
So that my said invention shall be the better understood I will describe the same by
reference to the drawings hereto annexed. Fig. 1. is a front elevation of the simplest form
of my chromatic advertizer,part of the front of stencil being removed to show the revolving
disc of coloured media. Fig. 2. is a view of the saine apparatus with the stencil
entirely removed showing a possible position of the mechanism by which the disc may
be rotated. Fig. 3. a view of a double disc apparatus, showing the way of introducing
oxtra colours or of extending the size of apparatus. Fig. 4. is a side and sectional
view showing the positions of the stencil, disc, and illuminator, similar letters of
reference indicate corresponding parts of this apparatus throughout the drawings.
A. is a plate (preferably of glass) so painted or darkened as to form a stencil through
which light passes.
13 is a disc fitted with coloured glass, silk, oiled paper, glass
prisms or other suitable media as shown by the shading, through which light from C,
a lamp or other means of illumination may pass, being reflected from a mirror D.
E. is the mechanism by which the disc is revolved. The disc B may be supported by
bearings from the floor of the apparatus or may be suspended on similar bearings
from roof or sides of same; the disc or discs may be driven by clockwork fitted
within or without the frame or box, and should falling sand or water be the motor one
or more of the discs may be provided with small pockets or cups. G is a chimney
conveying the smoke and heat from lamp when such an illuminator is used.

page_text: 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
Firstly an automatic advertizing apparatus substantially as described for imparting
a continual and frequent change of colour to any notice or sign as set forth.
Secondly that by reason of its very simple construction it is far cheaper to produce
than any other mechanical and automatic advertisement and its almost absolute
inability to get out of order and that there is no limit to the size or shape it may
assume.
Thirdly an automatic advertizing apparatus, constructed as described consisting of
one or more discs of transparent or semi-transparent media and the glass or other
front forming a stencil which may be made in such a way that the colours formed by
the disc or discs may pass through the letters &c. or the letters may be opaque and the
ground work transparent, through which the colours are seen as produced by the disc
or discs already described.
In witness whereof I the said Frederick William Hembry have hereunto set my
hand and seal this 25th day of August in the year of our Lord One thousand
eight hundred and eighty seven.