Improvements in Racks Applicable for Holding the Operating-cords of Window Blinds.
Year: 1888

page_text: Date of Application, 5th July, 1888
Complete Specification Left, 25th Feb., 1889
Complete Specification Accepted, 30th Mar.. 1889
Improvements in Racks Applicable for Holding the Operating-cords
of Window Blinds.
I, DAVID PRIESTLEY of 10 Agnes Street, Beach Cliffe, Keighley in the County of
York, Blacksmith do hereby declare the nature of this invention to be as follows, that
is to say :-
It relates to improvements in racks, applicable for holding the operating
cords of window blinds, of the well known class wherein the grooved bowl
around which the cord passes is carried by bearings mounted upon a screw, said
screw being employed to produce any desired movement of said bearings so that the
tension of the blind-cord might be regulated in the manner common and well under-
stood.
As is well known this arrangement of parts always holds the cord in a most rigid
and unyielding manner so that when samo is passing around the grooved pulley,
above described, any unevenness or inequality in the thickness thereof, such as the
place where the outer ends are joined together to make it endless, causes it either to
operate most awkwardly, or prevent its operations altogether.
To obviate this I place an open-spiral spring upon the lower end of this screw in
such a manner that by same pressing upon the thumb-and-finger head formed as is
well known on the bottom end thereof and against the fixed bearing carrying the
whole, a suitably yielding movement of the screw with its bowl etc., mounted
thereon, is allowed, while its adjusting capabilities are not in the least interfered with.
It will readily be understood that my invention is applicable to any of the well
known kinds of racks wherein screws are used in the above described manner,
whether the grooved bowls are mounted thereon so as to be between the screw and its
bearings or on the outside thereof since it does not in any way interfere with the
arrangements of these parts.
-
DAVID PRIESTLEY,
Per Samuel Hey,
Agent.

page_text: Improvements in Racks Applicable for Holding the Operating-cords
of Window-blinds.
1. DAVID PRIESTLEY of 10, Agnes Street, Beech Cliffe Keighley in the County of
York, Blacksmith, 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, that is to say :—
It relates to improvements in racks, applicable for holding the operating-
cords of window blinds of the well known class wherein the grooved howl
around which the said cord passes is carried by bearings mounted upon a screw, said
serew being employed to produce any desired movement of said bearings so that the
tension of the blind cord might be regulated in the manner common and well
understood.
As is well known this arrangement of parts always holds the cord in a most rigid
and unyielding manner so that when same is passing around the grooved pulley, above
described, any unevenness or inequality in the thickness thereof, such as the place
where the outer ends are joined together to make same endless, causes it either to
operate most awkwardly or prevent its operations altogether.
The object of my invention is to obviate this defective working and produce a rack
that will hold the operating cord in a more suitably yielding manner, while its adjust-
ing capabilities are not interfered with, and in order that iny said invention may be
more readily understood, I have hereunto appended a sheet of drawings illustrative
thereof, to which, by figures and letters, reference is made in the following description.
Figs. 1 and 2 aro front and side views respectively of a rack constructed according
to my invention.
The object of my said invention is attained by mounting or placing a spiral spiral a
(or this part a may be of india rubber of the proper shape) upon the lower end of the
scrow in such a manner that said spring a will press upon the thumb-and-finger
piece which is formed on, so as to facilitate the operations of the said screw & for
well known purposes, and also (said spring a) to press against the bearing & which is
attached to the park e, by which means a suitably yielding movement of the screw/
with its bowl, around which the blind cord 7 passes, is allowed, while said scrow b
may still be employed for adjusting or moving the bowl as and whenever desired.
Preferably on that part of the screw where the spring a is mounted no thread is
formed, since such a thread in this part might interfere with the operations of said
spring a.
It will be readily understood that my invention is applicable to any of the wall
known kinds of racks wherein the screw is employed, whether the bowl is mounted
to operate between said screw and the part as shown in the accompanying
drawings or on the opposite or outside of said screw b, since it does not in any way
interfere with the arrangement of the parts a and b.

page_text: 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 combination of the parts forming a rack as herein described, said parts
consisting, of the screw 6 formed as set forth, the bearings d and e, the bowl fand the
spring or india-rubber part a, the same being arranged to operate substantially as
specified.
D. PRIESTLEY,
Per Samuel Hey,
Agent.