IMPROVEMENTS IN DEVICES FOR ADJUSTING AND GRIPPING CORDS to be as follows:
Year: 1884

page_text: I, WILLIAM CHRISTIE, of 16 Victoria Crescent, Dundee, in the County of
Forfar, North Britain, Engineering Draughtsman do hereby declare the nature
of my said invention for "IMPROVEMENTS IN DEVICES FOR ADJUSTING AND
GRIPPING CORDS to be as follows:-
"
My said Invention has for its object to improve the construction of devices for
adjusting and gripping cords, and to render such devices more convenient and
expeditious in use and not liable to let the cord slip. My improved device is
applicable in any case in which the two cord ends have to be adjustably connected
to each other or in which one end of a cord has to be adjustably connected to a
fixed point; and the device may be made of various sizes and strengths to suit
different cases and purposes. The device is advantageously applicable and was
originally designed for the cord used in connection with a steam engine indicator
for imparting a suitable movement to the barrel of that instrument.
In some modifications my improved device consists of one or two metal disks or
plates attached to which there is a hook for connection to one end of the cord or to
a fixed point, and a lever gripper for the other or adjustable end of the cord. The
adjustable end of the cord is entered through between the lever gripper and a stud
fixed to the disk or disks; and the parts are arranged so that whatever strain or
tension is applied to the cord acts on the lever gripper in a manner to increase its
gripping pressure. In other modifications the device is fitted with lever grippers
for both cord ends and thus allows of either or both ends being adjusted.
My improved device is susceptible of various modifications as regards the shape
and arrangement of its details, but its essential and characteristic features will be
understood from the accompanying sheet of explanatory drawings on which four
examples are delineated. Each of the examples shown in the drawings is made
with two disks having the other parts fitted between them, but one of the disks is
supposed to be removed in one of the two views of each example, a face view and
an edge view of each example being shown. In these drawings the same reference
numerals are used to mark the same or like parts wherever they are repeated.
In the example shown in figures, 1, and 2, two disks, 11, of circular form (but
which may be of any other convenient form) are connected by three studs, 12, 13,
14, on one, 12, of which there is jointed a hook, 15, for attaching or connecting one
cord end, 16, to the device, or for connecting the device to a fixed point. The cord
end, 16, is shown as having an ordinary loop formed on it for being placed on the

page_text: hook; but if preferred a metal link, 17, may be attached to the cord as shown in
figure, 9. For holding the other cord end, 18, there is provided a curved lever
gripper, 19, formed with fulcrum journals or trunnions, 20, held in holes made for
them in the disks, 11, or this lever gripper, 19, may be centered on a stud fixed in
the disks, 11. The lever gripper, 19, is formed with a guide eye, 21, and the cord
end 18, passes through this eye and between the lever gripper, 19, and one 13, of
the studs. When the cord end, 18, is in tension it tends to turn the lever
gripper, 19, in the direction of the arrow in figure, 1, and so that its shorter
arm, 22, on the other side of the fulcrum, 20, presses and grips the cord against
the stud, 13, and it will be obvious that the gripping effect will be increased
proportionately with any increase of tension or strain applied to the cord. A
spring, 23, fixed to one, 14, of the studs is applied to the lever gripper, 19, to
cause it to grip the cord even when there is no tension; and when it is desired to
adjust the cord the lever gripper must be turned by band a little in the opposite
direction to that shown by the arrow, which will relieve the grip and allow the
cord, 18, to be easily drawn through in either direction.
In the second example, shown in figures, 3, and 4, the lever gripper, 19, has its
fulcrum, 20, at its bottom end, and grips the cord, 18, against the stud, 13, at a
part between its fulcrum and the part at which it is acted on by the tension of the
cord, 18, and instead of the cord bearing directly on the lever gripper as in the
first example it bears on the outer part (which is rounded) of the guide eye, 21, so
as to tend to pull the lever gripper.
In the third example, shown in figures, ŏ, and 6, the lever gripper, 19, has its
fulcrum, 20, at its upper end and the tension of the cord, 18, acts on a part of it
between its fulcrum and the part at which it grips the cord against the stud, 13.
In the fourth example, shown in figures, 7, and 8, two lever grippers, 19, each
arranged and acting as in the second example, are provided for gripping both cord
ends, 16, and 18, and allowing of either or both being adjusted.
Modifications for adjusting and gripping both cord ends may obviously be made
with the lever grippers (19) like that of the first example or like that of the third
example; and it will also be obvious that with either single or double gripping
action the lever grippers may be made of other forms than those shown, the
essential feature being the arrangement of the lever gripper so that the tension of
the cord acting on it causes it to grip the cord against a stud or equivalent part.
Dated this twenty ninth day of January 1884.

page_text: "
I, WILLIAM CHRISTIE, of 16 Victoria Crescent, Dundee, in the County of Forfar,
North Britain, Engineering Draughtsman, do hereby declare the nature of my said
invention for "IMPROVEMENTS IN DEVICES FOR ADJUSTING AND GRIPPING CORDS'
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 :-
My said Invention has for its object to improve the construction of devices for
adjusting and gripping cords, and to render such devices more convenient and
expeditious in use and not liable to let the cord slip. My improved device is
applicable in any case in which the two cord ends have to be adjustably connected
to each other or in which one end of a cord has to be adjustably connected to a
fixed point; and the device may be made of various sizes and strengths to suit
different cases and purposes. The device is advantageously applicable and was
originally designed for the cord used in connection with a steam engine indicator
for imparting a suitable movement to the barrel of that instrument.
In some modifications my improved device consists of one or two metal disks or
plates attached to which there is a hook for connection to one end of the cord
or to a fixed point, and a lever gripper for the other or adjustable end of the cord.
The adjustable end of the cord is entered through between the lever gripper and
a stud fixed to the disk or disks; and the parts are arranged so that whatever
strain or tension is applied to the cord acts on the lever gripper in a manner
to increase its gripping pressure. In other modifications the device is fitted with
lever grippers for both cord ends and thus allows of either or both ends being
adjusted.
-
My improved device is susceptible of various modifications as regards the shape
and arrangement of its details, but its essential and characteristic features will be
understood from the accompanying sheet of explanatory drawings on which four
examples are delineated. Each of the examples shown in the drawings is made
with two disks having the other parts fitted between them, but one of the disks
is supposed to be removed in one of the two views of each example, a face view
and an edge view of each example being shown. In these drawings the same
reference numerals are used to mark the same or like parts wherever they are
repeated.
In the example shown in figures, 1, and 2, two disks, 11, of circular form (but
which may be of any other convenient form) are connected by three studs, 12,
13, 14, on one, 12, of which there is jointed a hook, 15, for attaching or connecting
one cord end, 16, to the device, or for connecting the device to a fixed point. The
cord end, 16, may have an ordinary loop formed on it for being placed on the
hook; but if preferred a metal link, 17, may be attached to the cord as shown in
figures, 1, and 2. For holding the other cord end, 18, there is provided a curved
lever gripper, 19, formed with fulcrum journals or trunnions, 20, held in holes
made for them in the disks, 11; or this lever gripper, 19, may be centered on a
stud fixed in the disks, 11. The lever gripper, 19, is formed with a guide eye, 21,
and the cord end, 18, passes through this eye and between the lever gripper, 19,
and one, 13, of the studs. When the cord end, 18, is in tension it tends to turn
the lever gripper, 19, in the direction of the arrow in figure, 1, and so that its
shorter arm, 22, on the other side of the fulcrum, 20, presses and grips the cord
against the stud, 13, and it will be obvious that the gripping effect will be increased
proportionately with any increase of tension or strain applied to the cord. A
spring, 23, fixed to one, 14, of the studs is applied to the lever gripper, 19, to cause

page_text: it to grip the cord even when there is no tension; and when it is desired to adjust
the cord the lever gripper must be turned by hand a little in the opposite direction
to that shown by the arrow, which will relieve the grip and allow the cord, 18, to
be easily drawn through in either direction.
In the second example, shown in figures, 3, and 4, the lever gripper, 19, has its
fulcrum, 20, at its bottom end, and grips the cord, 18, against the stud, 13, at a
part between its fulcrum and the part at which it is acted on by the tension of the
cord, 18; and instead of. the cord bearing directly on the lever gripper as in the first
example it bears on the outer part (which is rounded) of the guide eye, 21, so as
to tend to pull the lever gripper.
In the third example, shown in figures, 5, and 6, the lever gripper, 19, has
its fulcrum, 20, at its upper end and the tension of the cord, 18, acts on a part
of it between its fulcrum and the part at which it grips the cord against the
Btud, 13.
In the fourth example, shown in figures, 7, and 8, two lever grippers, 19, each
arranged and acting as in the second example, are provided for gripping both cord
ends, 16, and 18, and allowing of either or both being adjusted.
Modifications for adjusting and gripping both cord ends, may obviously be made
with the lever grippers (19) like that of the first example or like that of the third
example; and it will also be obvious that with either single or double gripping
action the lever grippers may be made of other forms than those shown the
essential feature being the arrangement of the lever gripper so that the tension
of the cord acting on it causes it to grip the cord against a stud or equivalent part.
When my adjusting and gripping device is made with two disks as shown in
the drawings both disks may be fixed by rivetting the studs, 13, 14, to both
disks, I however prefer to have the studs rivetted to one only of the disks,
and to have the other disk fixed upon them by screws tapped into the studs,-
as this arrangement admits of the parts being easily separated for examination or
renewal.
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:
The improved device for adjusting and gripping a cord, in which a lever centered
in one disk or between two disks is arranged so that the cord may pass between
it and a stud fixed to the disk or disks, and bear on the lever in a manner to make
the lever grip it substantially as hereinbefore described, and as shown in the
accompanying drawings.
1004
EDMUND HUNT,
Applicant's Agent.