An Improved Gripping or Holding Device for Window-blind and other Cords.
Year: 1889

page_text: Date of Application, 14th Nov., 1889
Complete Specification Left 14th Aug. 1890-Accepted. 20th Sept., 1890
.
PROVISIONAL SPECIFICATION.
An Improved Gripping or Holding Device for Window-blind and
other Cords.
I, THOMAS LLEWELLYN, of 3 Rydal Road, Lancaster, in the County of Lancaster,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
My improved gripping or holding device for window-blind and other cords com-
prises a back plate with two projecting sides or ears carrying a cross pin upon which
"crescent" of which the two
is pivotted a cam or hook somewhat in the form of a
extremities point downwardly. A second pin crosses the ears and occupies a position
within the hollow part of the crescent shaped hook or cam and answers as a stop to
determine the amount of sweep of the hook in either direction. That point of the
hook adjoining the back plate which is hollowed out to correspond somewhat with
the adjoining curved face of the hook or cam-is arranged to jam the cord between
it and the plate in such manner that the greater the upward pull on the cord-caused
by the weight of the blind-the more tightly will the cord bo gripped or fastened.
The other end of the hook is formed with an eyelet or hole through which the cord is
passed the cord then passing under the second pin and upwards between the back of
the hook or cam and the back plato and upwards to the blind above. The upward
pull of the cord and its friction through the eyelet and on the back of the hook cause
the latter to be pulled round and so jain or grip the cord between the hook and the
back plate as herein before stated. The position of the second pin is such that when
the cord is released by pulling the lower depending part of the cord in a direction
more or less at right angles to the cord above the pin receives the pressure or rub of
the cord which is thereupon practically withdrawn from the hook itself the cord being
thus allowed to run freely through the gripping device in either direction until the
cord is again brought down more or less to the perpendicular when the hook will be
caused to be pulled round and again grip or jam the cord as hereinabove described.
To impart an increased cam-like or gripping action to the hook the hole through which
its supporting cross pin or pivot passes is elongated.
"
L
1800
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
.
COMPLETE SPECIFICATION.
An Improved Gripping or Holding Device for Window-blind and
other Cords.
I, THOMAS LLEWELLYN, of 3 Rydal Road, Lancaster, in the County of Lancaster,
Mechanical Engineer, 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:-
―
My improved gripping or holding device for window-blind and other cords com-
prises a back plate with two projecting sides or ears carrying a cross pin upon which
2 crescent" of which the two
is pivotted a cam or hook somewhat in the form of a
extremities point downwardly. A second pin crosses the ears and occupies a position
within the hollow part of the crescent-shaped hook or cam and answers as a stop to
determine the amount of sweep of the hook in either direction. That point of the
hook adjoining the back plate which may if desired be hollowed out to correspond
somewhat with the adjoining curved face of the hook or cam-is arranged to jam the
cord between it and the plate in such manner that the greater the upward pull on the

page_text: cord-caused by the weight of the blind-the more tightly will the cord he gripped
or fastened. The other end of the hook is formed with an eyelet or hole through
which the cord is passed the cord then passing under the second pin and upwards
between the back of the hook or cam and the back plate and upwards to the blind
roller above. The upward pull on the cord and its friction through the eyelet and on
the back of the hook cause the latter to be pulled round and so jam or grip the cord
between the hook and the back plate as hereinbefore stated. The position of the
second pin is such that when the cord is released by pulling the lower depending part
of the cord in a direction more or less at right angles to the cord above the pin
receives the pressure or rub of the cord which is thereupon practically withdrawn from
the hook itself the cord being thus allowed to run freely through the gripping device
in either direction until the cord is again brought down more or less to the perpen-
dicular when the hook will be caused to be pulled round and again grip or jam the
cord as herein before described. To impart an increased cam-like or gripping action
to the hook the hole through which its supporting cross-pin or pivot passes is slightly
elongated.
In the accompanying drawings:
Fig. 1 is a side view, and
Fig. 2 a front view of the improved gripping or holding device hereinabove
described with the hook or cum in the position which obtains when the hook is
gripping or holding the window-blind or other cord.
Fig. 3 is a side view and
Fig. 4 a front view of the same when the hook is moved back to allow the cord
to slip or pass freely through the device.
Figs. 5 and 6 are views corresponding with Figs. 1 and 3 respectively with one
of the projecting sides or ears removed so that the internal construction of the
device may be more clearly seen.
a is the back plate, the projecting sides or ears, c the cross pin or pivot
carrying the book or cam d. e is the second cross-pin answering as a stop for
the hook d and as a guard to receive the pressure or rub of the cord f. g is the
eyelet in the hook d and h an elongated hole or bearing in the said hook.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed 1 declare that what
I claim is
The improved gripping or holding device constructed and operating substantially
as described and shown in the drawings for the purpose set forth.
Dated this 14th day of August 1890.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Applicant's Agent.