Improvements relating to Window Blinds.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Window Blinds.
I, JAMES JESSOP of 32 Osgathorpe Road, City of Sheffield, Retired Engineer,
Royal Navy, do hereby declare the nature of my invention to be as follows:-
My invention relates to improvements in or connected with window blinds, the
object being to construct blinds so as to admit light into rooms from the upper
part of such windows or above the blind instead of below the blind as heretofore,
and thus to obtain both light and privacy at the same time.
I propose therefore to fix the blind roller at the bottom of the window frame,
the blind being fixed thereto by any suitable means as heretofore.
I attach a cord preferably by means of a book or the like to the blind stick which
is passed through the hem of the loose end of the blind, and pass it over a pulley
secured to the top of the window frame, its loose end being secured to a depending
weight which tends to keep the fabric of the blind taut.
To wind the blind up and down, I fix a pulley to the window frame in a position
directly above the cord pulley upon the roller, over which I pass a cord having a
weight at one end, and the other end secured under the pulley.
A double sheave block is hung in the loop of the cord, and an endless cord is
passed round the lower sheave, and round the roller pulley.
By this arrangement the endless cord by which the blind is operated, is kept
taut with sufficient power to retain the blind in any position; it will also give as
the cord contracts or lengthens and thus prevent the cord breaking.
Instead of the weight at the loose end of the cord I may substitute a regulating
spring giving a similar result.
A guide line may be used to keep the balance weight connected with the blind,
steady when being drawn up or down.
1000
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
Improvements relating to Window Blinds.
I, JAMES JESSOP of 32 Osgathorpe Road, City of Sheffield, Retired Engineer,
Royal Navy do hereby declare the nature of this invention and in what manner the
same has to be performed, to be particularly described and ascertained in and by
following statement :-
My invention relates to improvements in and connected with window blinds, the
object being to admit the light from the upper part of the window instead of below
the blind; I thereby am enabled to obtain both light and privacy at the same
time

page_text: The annexed drawing illustrates the plan of carrying my invention into
practice.
The blind B, is fixed to a roller R, by any suitable means as heretofore, and the
roller is fixed to the bottom of the window frame W F, in brackets so that it is
capable of revolving, the blind being inverted.
The left hand bracket L, is of the usual type, with hole to receive the roller axle,
the opposite bracket O, being provided with a slot to allow the roller to be removed
when desired, for security a pin may be passed through the slot.
It will therefore be understood that when the blind is wound upon the roller it
is at the bottom of the window instead of at the top as is usual.
The free end of the blind is provided with a blind stick S, and to the centre of
the stick I attach a cord C, by any suitable means and carry it upwards and pass
it over a pulley P, fixed in the centre of the window frame, the fall end having a
weight W, capable of balancing the weight of the blind B, when it is raised to a
convenient height, and to keep the blind taut.
The raising and lowering of the blind is effected by means of a cord C², which
may be arranged on either side of the window as desired.
It consists of a loop cord passed over a pulley P2, upon the roller R, and kept
taut by means of another pulley P³ over which it passes and which is in connection
with a weight W².
The small block with the pulley P³, may have one or more sheaves to increase
the power of the weight to balance the blind and act as a brake, and while
keeping the loop cord C, tight, it allows considerable play to the cord when it is
pulled sideways or the like."
I may however dispense with the weight W2, and use equivalent means to give
the proper tension to the cord C2, such as a coiled spring, or a rubber spring, and
in the case of large and heavy blinds, I may dispense with a central weight W,
and arrange one at each side, and if preferred I may use guide cords at each side
to guide the blind stick S, while being raised and lowered.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim, is :-
1. The method of and appliances for operating inverted window blinds as herein-
before described and shown.
2. An inverted window blind B, having a roller R, balance weight W, winding
cord C, and tension weight W, constructed and operating as herein before described
and set forth.
3. In combination with an inverted blind a balance weight W, a loop cord C³,
and means for giving elastic tension to the loop cord, as hereinbefore described.
Dated the 30th day of December 1896.
ROBT. F. DRURY, C.P.A.,
George Street, Sheffield, Agent for Applicant.