IMPROVEMENTS IN WINDOW BLINDS
Year: 1885

page_text: COMPLETE SPECIFICATION.
I, WILLIAM PHILLIPS THOMPSON, Fel. Inst. P. A. of the Agency for Foreign Patent
Solicitors, 6 Lord Street, Liverpool, in the County of Lancaster, and 323 High
Holborn, in the County of Middlesex, Civil Engineer, do hereby declare the nature
of the said invention for "IMPROVEMENTS IN WINDOW BLINDS" (a communication
from abroad by Carl Ovinius Sörlie of Christiania, in the Kingdom of Norway,
Manufacturer) and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention consists of a window blind constructed of flexible, adjustable slats,
thereby combining the advantages of the venetian, with those of the ordinary
roller blind.
The amount of light passing through it can moreover be regulated even more
exactly than with the ordinary venetian blind.
Referring to the accompanying drawings:
Figure 1 is a drawing of the blind viewed from the outside of the window.
Figure 2 a transverse section Figure 4 also a transverse section adapted for
attachment to a rotary stick and Figure 5 a-b section and elevation of a portion
of the slats of which the blind is constructed.
These broad slats d are formed of paper or other suitable thin material, capable
of being rolled up. The edges of each slat are protected by a metal strip or tube d
Figure 5 sewn or otherwise attached thereto in order to give it the necessary
rigidity in the longitudinal direction. The slats are attached at one edge to the
bands or tapes 6 of the blind in such a manner that when they are shut down they
overlap each other sufficiently as shewn in Figure 2. The bands or tapes are
fastened above to a board a attached to the window frame. The bottom of the
blind is formed of a thin wooden board d' the cords c serving to draw up and let
down the blind are so arranged that the same may either be rolled up like a linen
blind or drawn up like a venetian. Any other suitable method of raising the blind
may also be adopted, such for instance as rolling it up from the lower end.
The adjustment of the slats to admit more or less light and air is accomplished
by means of cords e¹ and e' attached to the bottom board of the blind, and carried
through eyelets to the right side of the window. By drawing these cords a more

page_text: or less oblique position is imparted to the slats (see upper 6 slats in drawing
Figure 2), or if they are very flexible they bend correspondingly (see dotted lines
at d). To render the regulation of the light and air more exact, the blind is
divided into two or more sets of slats, each set operated by separate cords, whereby
all or only a portion of the blind may be opened or closed at will.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated
to me by my foreign correspondent, I declare that what I claim is
1. In window blinds the use of strips of paper or other suitable material having
a metal tube or wire inserted in the edge of each of their longer sides in such a
manner that the strips or slats may be rolled up around an ordinary stick.
2. In window blinds of the construction described the method of suspending the
flexible slats and the fastening of the bands to the edges of the slats.
. 3. In window blinds of the construction described the application of the
regulating cords el e³ and so on in such a manner that each slat can be opened or
closed as required by means of its corresponding cord.
4. The whole substantially as described and shewn in the annexed drawings.