IMPROVEMENTS IN WINDOW BLINDS, WINDOW SCREENS, LOUVRES, FIRE SCREENS, AND OTHER ARTICLES OF A LIKE KIND
Year: 1877

page_text: LETTERS PATENT to Octavius March, of No 47, Baker Street, Portman Square,
in the County of Middlesex, Gentleman, for the Invention of "IMPROVEMENTS
IN WINDOW BLINDS, WINDOW SCREENS, LOUVRES, FIRE SCREENS, AND OTHER
ARTICLES OF A LIKE KIND
"
Sealed the 27th July 1877, and dated the 31st January 1877.
PROVISIONAL SPECIFICATION left by the said Octavius March at the Office
of the Commissioners of Patents on the 31st January 1877
OCTAVIUS MARCH, of No 47, Baker Street, Portman Square, in the County of
Middlesex, Gentleman "IMPROVEMENTS IN WINDOW BLINDS, WINDOW SCREENS,
LOUVRES, FIRE SCREENS, AND OTHER ARTICLES OF A LIKE KIND
"
The arrangement of ships or pieces of glass, or other suitable material, for the
purpose of blinds, screens, louvies, or other articles of a like kind in such a way
that the planes of one set or series of slips or pieces may be made to assume a
position relatively different to that of the other set or series of slips or pieces, so
that one slip on piece (and preferably every alternate one) or series of slips or pieces
may be made to present a flat or nearly flat side to view, whilst the others, or some
of them, present an edgeway view, the same being provided with the necessary
mechanical devices for rotating, oscilating, or moving all or any of the slips or
pieces into the position required to produce the desired effect, for the purpose of
producing two or more different effects or appearances in the same blind, screen,
louvre, or other article, for example, I construct a window screen of slips of glass
of suitable length, width, and thickness, arranged at a proper distance apart in a
frame, so that each slip can be rotated upon its axis, I use slips of two different
colors (yellow and blue, for example) arranged alternately, and by this means I
obtain a screen capable of producing five distinct effects See the sketch in hor-
zontal section through centie of screen, the slips being vertical, y being the yellow
and 6 the blue slips
The five different effects are as follows.-

page_text: and the blue with their edges to view, the whole screen will present a yellow
appearance
Second When all the blue slips present their flat sides and the yellow their edges
to view the whole appearance will be blue
Third. When they are all oblique and parallel the appearance will be stripes of
yellow, green, and blue, the green being caused by the overlapping of the blue and
yellow
Fourth When all the ships are oblique, but at right angles, or nearly so, the
strines will be blue and vellow only
and the blue with their edges to view, the whole screen will present a yellow
appearance
Second When all the blue slips present their flat sides and the yellow their edges
to view the whole appearance will be blue
Third. When they are all oblique and parallel the appearance will be stripes of
yellow, green, and blue, the green being caused by the overlapping of the blue and
yellow
Fourth When all the ships are oblique, but at right angles, or nearly so, the
stripes will be blue and yellow only
Fifth When all the edges are turned to view no color will be seen, but only an
open space intersected by daik lines
For convenience in turning the slips I connect all the blue together and -all- the
vellow together. with ono knob to turn the blue and another for the yellow.
SPECIFICATION in pursuance of the conditions of the Letters Patent and of
an Order of the Loid Chancellor, filed by the said Octavius March in the Great
Seal Patent Office on the 15th August 1877
"
OCTAVIUS MARCH, of No 47, Baker Street, Portman Square, in the -County of
Middlesex, Gentleman "IMPROVEMENTS IN WINDOW BLINDS, WINDOW SCREENS,
LOUVRES, FIRE SCREENS, AND OTHER ARTICLES OF A LIKE KIND
"
My Invention consists of the arrangement of slips or pieces of glass, or other.
suitable material, for the purpose of blinds, screens, louvies, or other articles of a
like kind, in such a way that the planes of one set or series of ships or pieces may
be made to assume a position relatively different to that of the other set or series of
slips or pieces, so that one slip or piece (and preferably every alternate one) or series
of slips on pieces may be made to present a flat or nearly flat side to view, whilst
the others or some of them present an edgeway view, for the purpose of producing
two or more different effects or appearances in the same blind, screen, louvre, or
other article, the same being provided with the necessary mechanical devices for
rotating, oscilating, or moving all or any of the slips or pieces into the positions
required to produce the desued effects, for example, I construct a window screen
of slips or pieces of glass of suitable length, width, and thickness, arranged at a
proper distanco apart in a frame, so that each ship or piece can be rotated or moved
into the desued positions, I use slips or pieces of glass of two different colois
ananged alternately (yellow and blue, for instance), and by this means I obtain a
screen capable of producing five distinct effects
In the annexed Diawing Figures one to five represent the five different effects
which can be produced, such Drawing being a horizontal section through the centre,
"y" denoting the yellow and "b" the blue slips
I When all the yellow slips are arranged with their flat sides to view, and all
the blue ships with then edge to view, the whole screen will present a yellow
appearance
II. When all the blue slips are arranged with their flat sides to view, and all
the yellow slips with their edge to view, the whole screen will present a blue
appearance
III. When all the ships are oblique and parallel one to the other the appearance
will be yellow, green, and blue, the green being caused by the overlapping of the
yellow and blue
IV When all the slips are oblique, but at right angles, or nearly so, one to the
other, the appearance will be stripes of yellow and blue only.
V When all the slips have their edges turned to view no color will be seen, but
only an open space intersected by dark lines
For convenience, in turning, or moving the slips into the desired positions for

page_text: obtaining the various effects or appearances described, I connect all the yellow slips
together and all the blue slips together, with one knob or handle to turn or move
the yellow slips and another knob or handle to turn or move the blue ones
In witness wheicof, I, the said Octavius March, have hereunto set my hand
and seal, this Fourteenth day of August, in the year of our Lord One
thousand eight hundred and seventy-seven.
OOTITIS MADOH
Gol
HOV SAIAVLOO
OCT