IMPROVEMENTS IN APPARATUS FOR RETAINING IN POSITION, WINDOW BLIND ROLLERS, AND THE LIKE
Year: 1884

page_text: I, WILLIAM PATRICK KELLY, of Mount Brandon, near Graigne, in the County
of Carlow, Ireland, Lieutenant in the Reserve of Officers, Justice of the Peace
for the Counties of Carlow & Kilkenny do hereby declare the nature of my
invention for IMPROVEMENTS IN APPARATUS FOR RETAINING IN POSITION, WINDOW
BLIND ROLLERS, AND THE LIKE to be as follows:-
My invention relates to the construction of a cheap & efficient apparatus for
retaining window blind rollers, & the like, in position, so that the blind will not
run down, & so that the blind can be raised, or lowered, with facility, by means
of a single cord.
In carrying out my invention, I make use of two brackets, of suitable material,
one bracket for each end of roller.-The bracket on one end is merely a supporting
bracket, & is provided with a slot, into which the spindle of that end of the
roller may be dropped.-The bracket on the other end of the roller has a cavity in
its interior; which cavity contains a wooden friction block, which is pressed
against the lower side of the cavity, by a spring.-There is also a hole, opening,
from the outside, into the bottom of the interior cavity; into this hole the spindle
on the end of the blind roller is inserted.-When thus inserted, the spindle is held
between the friction block & the bottom of the cavity, by the action of the
spring; & the friction between the block & the bottom of the cavity, prevents
the spindle from revolving, & the blind from running down. The cord is wound
around a pulley on end of blind roller; & the other end of the cord is attached
to the bottom of the blind, in the manner usual with blinds furnished with a
single cord. By pulling on the cord, the friction of the spindle & the friction
block will be overcome, & the blind can be raised or lowered with facility.
T
1001 foun)
WILLIAM PATRICK KELLY,
Lieutenant, Reserve of Officers,
Justice of the Peace for County Carlow
& County Kilkenny.

page_text: I, WILLIAM PATRICK KELLY, of Mount Brandon, near Graigne, in the County of
Carlow, Ireland, Lieutenant in the Reserve of Officers, Justice of the Peace for
the Counties of Carlow & Kilkenny do hereby declare the nature of my invention
for APPARATUS FOR RETAINING WINDOW BLIND ROLLERS IN POSITION 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 the construction of a cheap & efficient apparatus for
retaining window blind rollers in position, so that the blind will not run down, &
so that the blind can be raised or lowered with facility, by means of a single cord.
I now proceed to describe the nature of my said Invention, & in what manner
the same is to be performed, by aid of the accompanying drawings.
In carrying out my invention, I make use of two brackets, of wood or any
suitable material, attached to the window frame; one bracket being merely a
supporting bracket, of suitable shape, having a slot, into which the spindle on that
end of the blind roller is dropped; such as is shown in figure 1, A being the
supporting bracket shown in side elevation; figure 2 shows the same bracket in
front elevation. The other bracket, shown in side elevation at B, in figure 1; in
section in figure 3, & in back elevation in figure 4,-has a cavity in the interior
opening from the back.-In some cases I make this cavity oval shaped, as shown
in figures 3 & 4; in other cases, I make it circular, or rectangular.-This cavity
contains a friction block, c in figures 3 & 4, of suitable shape & material, which
block is kept pressed against the lower side of the cavity by a spiral spring, d.--
The spring is contained in a cylindrical hole or cavity bored from the upper surface
of the bracket, down into the central cavity.-There is a hole opening from the
front of the bracket into the interior cavity; into this hole the spindle, e, o
end of the blind roller is inserted. When thus inserted, the spindle is held
between the friction block & the bottom of the cavity, by the action of the
spring & the friction prevents the spindle revolving, & the blind running
down. The front edge of the friction block is slightly bevilled all around, to allow
of the spindle being inserted, by forcibly pushing it in from the front of the
bracket. Each bracket is secured to the side of the window frame by a screw, or
screws; & the brackets may have, in addition, one or two short pieces of wire
projecting from their upper surfaces, which bite into the window frame, &
prevent the brackets working loose.-The blind roller is mounted by inserting the
spindle on the pulley end of the roller into bracket B, by pushing it in from the
front of the bracket, & then dropping the spindle on the other end of the roller
into the notch in bracket A.
on the
In some cases, I make the pulley on the blind roller, wide & deep, & wind
the cord around it, attaching one end of the cord to the roller, & the other end
to the bottom of the blind, as shown in figure 1.-By pulling the cord the blind is
raised; & it is lowered by pulling on the end of the cord attached to the blind.-
In other cases, I make the pulley narrow & deep, & I pass the cord around it
once or twice, allowing the ends of the cord to hang down a convenient length,
& splicing them below so as to form an endless cord.-By pulling on one return
of the cord, the blind will be raised; by pulling on the other, it will be lowered.―
In this case, which is shown in front elevation in figure 5, & in side elevation in
figure 6, I sometimes make the notch in the pulley roughened, or corrugated, or of
a serpentine form, so as to make it bite the cord more forcibly, & thus prevent
the cord slipping.

page_text: .
In some cases, I make the bracket B project over the pulley, & come down a
little on each side of the pulley, close to the flanges of the latter, so as to prevent
the cord riding over the flanges; as shown in figures 5 & 6.
In all cases. I make the spindle on end of blind roller, which is inserted into
bracket B, with longitudinal grooves, as shown in the figures, & particularly in
tigure 7, which represents the spindle in side elevation & in end elevation; the
friction block taking into these grooves, effectually prevents the blind running
down. I also bevil the end of the spindle, in order to enable it to be more easily
inserted in the bracket when fixing the apparatus ;-as shown in figure 7.
In this apparatus, (my said Invention,) it will be seen that there is no friction of
any sort acting on the blind cord, which would tend to fray or wear it; & the
fact of its not being affected by vibration renders it particularly suitable for the
blinds of railway carriages.-In the latter case, the apparatus may be constructed
in the frame of the window.
Having now particularly described & ascertained the nature of my said
Invention, & in what manner the same is to be performed, I declare that what
I claim is :-
The construction of an apparatus for retaining window blind rollers & the like
in position, consisting of two brackets, one of which is merely a sustaining bracket;
the other bracket having a cavity in the interior into which the spindle on the end
of the blind roller is inserted; the said cavity containing a friction block which
is pressed down by a spring, so that the spindle, when inserted, is held between
the friction block & the bottom of the cavity, & thus prevented revolving until
made to do so by pulling on the blind cord; substantially as hereinbefore described,
& illustrated in the accompanying drawings.
Dated this 13th of October 1884.