Improvements in Advertising Apparatus.
Year: 1898

page_text: Date of Application, 3rd Oct., 1898
Complete Specification Left, 3rd July, 1899-Accepted, 5th Aug., 1899
Improvements in Advertising Apparatus.
I, WALTER BRAY, of 17, Hamilton Gardens, St. John's Wood, in the County
of London, Draughtsman, do hereby declare the nature of this invention
to be as follows:-
My invention relates to advertising apparatus of the kind whereby advertise-
ments are caused to appear and disappear or different advertisements are succes-
sively presented.
I provide a screen composed of a number of water tight compartments or
cells the front of each of which is transparent and the back of which is opaque,
or may be translucent when illuminated from behind.
Each cell has two holes, one at the top, the other at the bottom, these communi-
cating by flexible joints with a receptacle containing coloured liquid.
The receptacles, of which there may be one for each cell or one for a number
of cells are caused to rise and fall by mechanical means, which may consist of
levers actuated by a pegged barrel moved by clockwork or otherwise, thereby
causing the liquid to flow into and out of the cells. Thus groups or sets of the
cells are filled with the coloured liquid, forming devices which disappear when
the cells are emptied.
The liquid may be caused to flow into and out of a single large cell having
letters or devices transparent on its front, these appearing only when the liquid
occupies the cell.
It follows that by filling all the cells, with liquid, letters or devices may be
made to appear by emptying certain of them.
T
S Antabo 1908
ABEL & IMRAY,
Agents for the Applicant.
I, WALTER BRAY, of 17, Hamilton Gardens, St. John's Wood, in the County
of London, Draughtsman, 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:-
My invention relates to advertising apparatus of the kind whereby advertise-
ments are caused to appear and disappear or different advertisements are succes-
Sively presented.
I provide a screen composed of a number of water-tight compartments or

page_text: cells the front of each of which is transparent and the back of which is opaque
or may be translucent when illuminated from behind.
Each cell has two holes, one at the top, the other at the bottom, these communi-
cating by flexible joints with a receptacle containing coloured liquid.
The receptacles of which there may be one for each cell or one for a number
of cells are caused to rise and fall by mechanical means which may consist of
levers actuated by a pegged barrel moved by clockwork or otherwise, thereby
causing the liquid to How into and out of the cells. Thus groups or sets of the
cells are filled with the coloured liquid, forming devices which disappear when
the cells are emptied.
The liquid may be caused to flow into and out of a single large cell having
letters or devices transparent on its front, these appearing only when the liquid
occupies the cell.
It follows that by filling all the cells, with liquid, letters or devices may be
made to appear by emptying certain of them.
Fig. 1 of the accompanying drawing shews a display board according to my
invention, Fig. 2 shews to an enlarged scale a side view of part of the board and
a section of the working apparatus. Fig. 3 is an elevation and vertical section
of one of the cells and Fig. 4 is a sectional plan of several of them with the com-
municating tubes for the several rows.
Each of the cells a communicates by a flexible pipe b at its bottom and a
flexible pipe c at its top with an upright tube d having a part e sufficiently
expanded to constitute a chamber of capacity the same as or greater than that of
the cell a. This upright tube d is charged with liquid which may be coloured
and is caused to reciprocate vertically by cams or otherwise, worked by clockwork
or other convenient motor. When the chamber e is raised to e¹ above the level
of the cell a with which it communicates, the liquid flows from e into the cell, and
when the chamber is again lowered the cell is emptied.
A group of the cells may communicate with one upright tube and chamber e
so as to be filled and emptied simultaneously or each cell may be separately filled
and emptied according to the design or the matter that is to be displayed.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is
Advertising apparatus comprising cells which can be filled with liquid in
various groups presenting letters or other designs, substantially as described.
Dated this 3rd day of July 1899.
ABEL & IMRAY,
Agents for the Applicant.