Improvements in Cords for Hanging Window Sashes and the like.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Cords for Hanging Window Sashes and the like.
I, WILLIAM HENRY NAYLOR, of 479, North Fifth Street, in the City of
Philadelphia, State of Pennsylvania, United States of America, Manufacturer of
Driving Bands, do hereby declare the nature of the said invention and in what
nanner the same is to be performed, to be particularly described and ascertained
n and by the following statement :-
The object of my invention is to provide an exceedingly strong and durable
wisted sash cord, which will not stretch or untwist.
This object I attain in the following manner, reference being had to the accom-
panying drawing, in which-
Fig. 1, is a perspective view of my improved cord intended for use as a sash
cord; and
Fig. 2, is a view showing its application to a window-sash and weight.
Ordinary cords or ropes are objectionable for many purposes, because, in order to
attach them, an eye, knot, loop, or other connection must be formed at each end for
securing the various attachments, or for preventing untwisting of the cord, and in
the case of a sash cord, square weights must be employed in order to prevent the
cord from untwisting.
In carrying out my invention, I first make a twisted cord with an eye or loop at
each end, and then double this cord and again twist it so as to form a single eye or
loop at one end of the cord and a double eye or loop at the opposite end, and to
prevent untwisting of the cord this double eye or loop is engaged by a hook, ring
or other retainer.
A cord of this character is extremely strong and durable owing to the doubling
and twisting of the cord during its manufacture, and the cord will not stretch
materially in use.
In the drawing A, represents a cord having at one end the single eye a, and at
the opposite end the two eyes b, b¹, before referred to, these two eyes being engaged
by the loop d, of the hook B, whereby the eyes are retained and the cord prevented
from untwisting, this loop having been introduced into the eyes during the process
of manufacture of the cord, so that said eyes are pulled tightly upon the loop and
the easy removal of the hook is thereby prevented.
When a cord thus made is intended for use as a sash cord, it can be readily
applied as shown in Fig. 2, that end of the cord having a single eye a, being
secured to the sash frame D, by means of a hook, staple or nail f, passed through
the eye and into the sash, while the hook B, engages with the usual eye at the
upper end of the sash weight F.
As the cord cannot untwist, a round weight may be used instead of the square
weight now generally employed, and as there is no material stretch in the cord and
no elongation of the same due to untwisting, no re-hanging of the sashes for the
sake of taking up slack in the cord is ever required. The round weight, moreover,
is preferable to the ordinary square weight, as it cannot become jammed in the
weight box as square weights sometimes do when they twist slightly so as to bring
their corners against the sides of the box.
It will be evident that a cord of the character described is much more readily
applied to the sash than the usual cord, which has to be drawn through recesses or
openings in the sash frame and then knotted so as to prevent it from being pulled
out, and the formation of these recesses or openings in the sash frame is also
rendered unnecessary.
It will be evident, however, that my invention is not limited to sash cords, but
may be used for other purposes, and in place of the simple hook B, a ring or a snap

page_text: hook may be employed, and, if desired, such rings or hooks may be used at both
ends of the cords in some cases.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is;-
As a new article of manufacture, the within described sash cord, said cord being
twisted so as to form a single eye at one end, and two eyes side by side at the
opposite end, a hook or equivalent retainer passing through the two eyes at the one
end and bound therein by the twist in the cord, said hook securing the two eyes
together and preventing the untwisting of the cord substantially as specified.
Dated this 30th day of May 1892.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.