Year: 1887

page_text: GUSTAVE RIEUNIER, Professor, Jena Hocus, Gobowen, Shropshire, England, 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:-
This invention relates to an improved and simplified "Blind Pulley" whereby the
operation of pulling up and down blinds and similar appliances may be effected
satisfactorily and without trouble. The improved little machine is constructed in such
a way that it cannot be out of order.
It consists of a piece of wood or block in the shape of a parallelogram 14 inch squaro
by 5 inches long which will hang, on the right side, from the blind roller by means of
a double cord as most blinds do. This block is divided in its length into two equal
parts, forming thus two parallelograms half of the thickness of the whole, fastened
together with a screw placed within an inch from the top,-2 inches from the top,
exactly on the line of division, a hole in diameter and 14 long is made through the
two blocks to fix in it a small axle B, round which will revolve a small fluted wheel A,
inch in diameter and inch long. In order to allow the wheel to revolve round
that axle, a cavity must be made on both sides of the divided block, just in the middle
of the axle where the wheel is to work and sufficiently large and deep to avoid any
friction. It is round the wheel that I shall call a pulley that the cord C, used to pull up
and down will work.
By means of two grooves G, wide enough for any ordinary cord and made from
the top of the two blocks in a vertical line, opposite to each other, corresponding
to the middle of the pulley and reaching the lower part of the cavity in which
the pulley revolves, the cord is fixed round it, kept always in the very centre and
cannot deviate from its course, because the two ends of the wheel extending
beyond the width of the said grooves are thus protected by the sides of the cavity
itself.
In screwing again the two blocks, just of an inch under the pulley and in a
right angle to its axle, a hole D, is made purposely to facilitate the passing of

page_text: the cord round the said pulley. This opening being on the same line as the two
grooves, must meet with the two ends of the said grooves, which are in a slanting
way towards the opening and seems to be a continuation of them.
The fixing of the cord is performed by introducing one end down one groove,
no matter which; when it reaches the hole or opening mentioned in the preceding
paragraph, it is taken out of it and passed again through the same to reach in a
straight line the other end and finally pushed in the second groove in an upward
direction. This operation of putting the cord round the wheel is thus easily
performed.
Below the said opening, inside the two blocks, are made two cavities E, which must
be filled up with enough lead to give the little machine a sufficient weight, from 14
to 20 ounces, in order to counterbalance the heaviness of any blind and insure the
regular tension of the cord in any weather, dry or damp.
Before joining very neatly the cord, generally 2 yards long, its two ends must
pass through the two eyes of a cord-guard F, and when the cord has been properly
adjusted round the pulley of the blind roller, it hangs like the weight of a clock. If
then one pulls it slightly downwards or upwards, it will instantly bring the blind up
or down without the least effort and will instantly stop at the height required. The
double eye cord-guard must lastly be fastened to the window sash about inch over
the upper part of the hanging block. This is only to prevent the twisting of the cord,
and in fixing the said cord-guard, great care must be taken that its two eyes are on
the same line as the two grooves to avoid friction.
In conclusion I shall say that the piece of wood or block can be made in different
shapes so as to render it ornamental and useful; for instance in the shape of a fish, tassel,
fruit.
and, to make it less bulky, any metal may be employed instead of wood :
it will make no difference to the main feature of the invention.
•
Having now 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. The hanging block.
2. The placing of the pulley.