Improvements in or relating to Venetian Blinds.
Year: 1899

page_text: Date of Application, 21st Aug., 1899
Complete Specification Left, 21st May, 1900-Accepted, 21st July, 1900
Improvements in or relating to Venetian Blinds.
I, SAMUEL SMITH, of 16, Higher Chatham Street, Chorlton-on-Medlock, Man-
chester, Window Blind Maker, do hereby declare the nature of my said invention
to be as follows;
My invention refers to venetian blinds and has for its object to enable such
blinds to be raised and lowered with greater facility than heretofore, also to
dispense with the lifting cords and pulleys now used which are very apt to get
out of order.
According to my invention I construct the laths of the blind more or less in
the ordinary manner, but with the holes for the cords parallel instead of at
right angles with the edges of the lath. I also make them, by preference of
very light wood or any suitable substitute.
For spacing and supporting the laths at the right distances apart I also use
the ordinary ladder tapes suspended in the ordinary manner from the top or
ordinary pulley-bar and shedding rail. In lieu, however of using cords as hereto-
fore for raising and lowering the blind, I use tapes passed through the holes
aforesaid in the laths, and secured to the lowermost lath, and instead of passing
such tapes over pulleys I pass them over a spring roller, with check action,
situated above the pulley bar.
Over another part of the roller or a pulley connected with such roller at, or
near one side of the blind, I wrap a cord which is long enough to also hang
down by the window.
This cord winds off the pulley in a direction opposite to that of the recoil
of the spring, hence in pulling it it' lowers the blind, whilst on letting go the
recoil of the spring raises the blind by wrapping the tapes on to their pulleys.
The check action on the spring roller allows for the lowering and raising of
the blind to any intermediate height desired.
בד
1
1011
f
1900
Improvements in or relating to Venetian Blinds.
I, SAMUEL SMITH, of 16, Higher Chatham Street, Chorlton-on-Medlock, Man-
chester, Window Blind Maker, 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 refers to venetian blinds and has for its object to enable such

page_text: blinds to be raised and lowered with greater facility than heretofore, also to
dispense with the lifting cords and pulleys now used which are very apt to get
out of order.
According to my invention I construct the laths of the blind more or less in
the ordinary manner but with the holes for the cords parallel instead of at
right angles with the edges of the lath. I also make them by preference of
very light wood or any suitable substitute.
For spacing and supporting the laths at the right distances apart I also use
the ordinary ladder tapes suspended in the ordinary manner from the top or
ordinary pulley bar and shedding rail. In lieu, however of using cords as hereto-
fore for raising and lowering the blind I use tapes passed through the holes
aforesaid in the laths and secured to the lowermost lath and instead of passing
such tapes over pulleys I pass them over a spring roller with check action
situated above the pulley bar.
Over another part of the roller or a pulley connected with such roller at or
near one side of the blind I wrap a cord which is long enough to also hang
down by the window.
"
"
This cord winds off the pulley in a direction opposite to that of the recoil
of the spring, hence on pulling the same it lowers the blind, whilst on letting
go the recoil of the spring raises the blind by wrapping the tapes on to the
roller. The check action on the spring roller allows for the lowering and raising
of the blind to any intermediate height desired.
On the accompanying drawing I illustrate the salient features of my invention,
Fig. 1 being a front view of the upper right hand corner of a venetian blind
made and fitted in accordance with my invention,
Figs. and 3 demonstrating the full blind in the raised and lowered positions
respectively, and
Fig. 4 illustrating a detail.
The laths (A) are sustained in the ordinary manner by tapes (B) from the top
lath or bar (C), which in turn is supported by brackets (E) from the window
casing, or by further tapes or bands from a spring roller (F), which in turn
is supported in metal end brackets (G).
The said roller is, by preference, in the form of a sheet metal drum or tube
and the spring is placed within it.
Upon such roller I provide two sets of flanges (H) and in each of the laths (A)
I form slots or openings (I), see Fig. 4, through which I pass cords or tapes (J).
These cords or tapes reach down and at one end are secured to the bottom
lath (A) and at the other end are secured to the roller (F) at a point between
two of the flanges (H) as illustrated.
With the blind drawn down and then released by catch or check, such as is
now commonly used with spring roller blinds, the blind under the recoil of the
spring and rotation of the roller on to which the tapes or cords (J) wind, rises
automatically.
The blind is lowered by a means of a cord (K) wrapping around a portion
of the rollers and coming from the back of the roller as shewn.
When the blind is fully lowered there are still one or two coils around the
roller so that in case the blind should lock when fully lowered a pull of the
cord releases it.
A flange (L) may be provided for guiding the cord, and to keep it clear of
the laths, also another flange (as shewn by dotted lines) for keeping it from
slipping off the roller.
Having thus 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:-
--
1: In venetian blinds, a spring roller, a set of tapes or cords secured to and

page_text: wrapping around such roller, passing through the laths, and secured to the
bottom lath, and a roller-operating cord, and all arranged and mounted sub-
stantially as and for the purpose set forth.
101
1000
SAMUEL SMITH,
By John G. Wilson & Co.,
Agents.