AN IMPROVED ATTACHMENT FOR POLE CHAINS OR STRAPS AND TRACES
Year: 1876

page_text: LETTERS PATENT to Peter Hooker, of Saint Luke's, and Edward Wright, of
Balls' Pond, both in the County of Middlesex, for the Invention of "AN
IMPROVED ATTACHMENT FOR POLE CHAINS OR STRAPS AND TRACES."
PROVISIONAL SPECIFICATION left by the said Peter Hooker and Edward
Wright at the Office of the Commissioners of Patents on the 25th March 1876.
PETER HOOKER, of Saint Luke's, and EDWARD WRIGHT, of Balls' Pond, both in
the County of Middlesex. "AN IMPROVED ATTACHMENT FOR POLE CHAINS OR
STRAPS AND TRACES."
Our Invention consists in a spring shackle to be applied to the pole chains and
traces of harness, for the purpose of readily releasing the same in case of the horse
falling down in order to detach the horse from the vehicle. It frequently happens
in such like accidents that much difficulty is experienced in releasing the horse,
owing to the weight or strain upon the traces or pole chains, which prevents the
same being disconnected in the ordinary way.
The shackle of this Invention may be applied to the pole chains or straps either
in connection with the pole of the vehicle or the hames of the collar. The shackle
consists merely of a body part pivoted or jointed to the pole or attached to the
hames, and provided with a curved arm or link hinged or pivoted by one extremity
to the body part, and secured at the other extremity by a spring latch or lever, also
pivoted to the body part, and provided with a lug or catch, which engages with the
extremity of the arm, the shape of the said extremity and the catch or lug which
retains it and their position relative to the pivot of the latch and direction of the
strain being such that any strain which may come on the arm will tend to make
the latch hold it more firmly, without however preventing it being easily discon-
nected when required by pulling back the catch.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Peter Hooker and Edward Wright in the Great Seal Patent Office on
the 22nd September 1876.
PETER HOOKER, of Saint Luke's, and EDWARD WRIGHT, of Balls' Pond, both in
the County of Middlesex. "AN IMPROVED ATTACHMENT FOR POLE CILAINS OR
STRAPS AND TRACES."

page_text: Our Invention consists in a spring shackle to be applied in connection with the
pole chains or straps and also to the traces of harness, to enable them to be readily
disconnected in the event of the horse falling down, as it frequently happens in such
accidents that much difficulty is experienced in releasing the horse, in consequence of
the strain upon the traces or pole chains preventing them being disconnected in the
ordinary way.
The shackle may be applied at either end of the pole chains or straps, that is to
say, either to the pole of the vehicle or the hames of the collar. The shackle
consists merely of a body part pivoted or jointed to the pole or attached to the
hames, and provided with a curved arm or link hinged by one extremity to the
body part, and secured at the other extremity by a spring latch or lever also
pivoted to the body part, and provided with a catch which engages with the
extremity of the arm, the position of the latch relatively to the direction of the
strain being such that the latch will hold the arm securely under any strain,
without however preventing it being easily disconnected when required.
DESCRIPTION OF DRAWINGS.
Figure 1 represents the shackle as applied to one of the pole chains, and Figure 2
represents the edge view of the shackle separately.
A is the body of the shackle, made preferably of a V shape, as shown. It is
connected to the end of the pole B by a link C at its apex, jointed to it by a pin or
bolt D. E is a curved arm or link extending between the two limbs of the body
part A, being hinged at one end to the one limb at F, and retained at the other end
by a latch G fitted in a recess in the other limb, and pivoted on a pin H, and acted
on by a spring I beneath the tail end of the latch. The arm or link E has a lug K
at its extremity, which engages in a corresponding notch L in the latch G, the
abutting surfaces of the lug and notch being so sloped as to avoid any tendency of
the arm to escape from the latch. The arin E is passed through a link of the pole
chain, and it is preferably curved slightly, as shown, in order to bring the chain
nearer to and thus throw the greater part of the strain upon the pivot F
It will be observed that the portion of the strain which comes upon the latch G is
in the direction of its length, and is therefore entirely sustained by its pivot H
and not by the spring I. M is a ring at the end of the latch, by which to pull it
out to the dotted position in order to release the arm E which is also shown opened
out in dotted lines.
The principal parts may be made of iron, and the pivot pins and spring of steel.
The shackle may be reversed, the link C being permanently attached to the pole
chain or strap, and the arm E passed through the ring at the end of the pole, and it
will be readily understood, without further explanation, that the shackle may be
similarly applied between the pole chains or straps and the hames of the collar, or
between the traces and futchels.
Having described the nature of our Invention and the manner of performing the
same, we declare that what we claim as our Invention to be protected by the herein-
before in part recited Letters Patent is, the shackle consisting of the part A,
pivoted arin E, and spring latch G, constructed and combined substantially as shown
and described and applied in the manner and for the purpose specified.
In witness whereof, 1, the said Peter Hooker, for myself and the said Edward
Wright, have hereunto set my hand and seal, this Twenty-first day of
September, in the year of our Lord One thousand eight hundred and
seventy-six.
PETER HOOKER. (L.S.)

page_text: LETTERS PATENT to Peter Hooker, of Saint Luke's, and Edward Wright, of
Balls' Pond, both in the County of Middlesex, for the invention of "AN
IMPROVED ATTACHMENT FOR POLE CHAINS OR STRAPS AND TRACES."
Sealed the 1st September 1876, and dated the 25th March 1876.
PROVISIONAL SPECIFICATION left by the said Peter Hooker and Edward
Wright at the Office of the Commissioners of Patents on the 25th March 1876.
PETER HOOKER, of Saint Luke's, and EDWARD WRIGHT, of Balls' Pond, both in
the County of Middlesex. "AN IMPROVED ATTACHMENT FOR POLE CHAINS OR
STRAPS AND TRACES."
Our Invention consists in a spring shackle to be applied to the pole chains and
traces of harness, for the purpose of readily releasing the same in case of the horse
falling down in order to detach the horse from the vehicle. It frequently happens
in such like accidents that much difficulty is experienced in releasing the horse,
owing to the weight or strain upon the traces or pole chains, which prevents the
same being disconnected in the ordinary way.
The shackle of this Invention may be applied to the pole chains or straps either
in connection with the pole of the vehicle or the hames of the collar. The shackle
consists merely of a body part pivoted or jointed to the pole or attached to the
hames, and provided with a curved arın or link binged or pivoted by one extremity
to the body part, and secured at the other extremity by a spring latch or lever, also
pivoted to the body part, and provided with a lug or catch, which engages with the
extremity of the arm, the shape of the said extremity and the catch or lug which
retains it and their position relative to the pivot of the latch and direction of the
strain heing such that any strain which may come on the arm will tend to make
the latch hold it more firmly, without however preventing it being easily discon-
nected when required by pulling back the catch.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Peter Hooker and Edward Wright in the Great Seal Patent Office on
the 22nd September 1876.
PETER HOOKER, of Saint Luke's, and EDWARD WRIGHT, of Balls' Pond, both in
the County of Middlesex. "AN IMPROVED ATTACHMENT FOR POLE CHAINS OR
SRTAPS and TRACES.”

page_text: Our Invention consists in a spring shackle to be applied in connection with the
pole chains or straps and also to the traces of harness, to enable them to be readily
disconnected in the event of the horse falling down, as it frequently happens in such
accidents that much difficulty is experienced in releasing the horse, in consequence of
the strain upon the traces or pole chains preventing them being disconnected in the
ordinary way.
The shackle may be applied at either end of the pole chains or straps, that is to
say, either to the pole of the vehicle or the haines of the collar. The shackle
consists merely of a body part pivoted or jointed to the pole or attached to the
hames, and provided with a curved arm or link hinged by one extremity to the
body part, and secured at the other extremity by a spring latch or lever also
pivoted to the body part, and provided with a catch which engages with the
extremity of the arm, the position of the latch relatively to the direction of the
strain being such that the latch will hold the arm securely under any strain,
without however preventing it being easily disconnected when required.
DESCRIPTION OF DRAWINGS.
Figure 1 represents the shackle as applied to one of the pole chains, and Figure 2
represents the edge view of the shackle separately.
It is
A is a body of the shackle, made preferably of a V shape, as shown.
connected to the end of the pole B by a link C at its apex, jointed to it by a pin or
bolt D. E is a curved arm or link extending between the two limbs of the body
part A, being hinged at one end to the one limb at F', aud retained at the other end
by a latch G fitted in a recess in the other limb, and pivoted on a pin H, and acted
on by a spring I beneath the tail end of the latch. The arm or link E has a lug K
at its extremity, which engages in a corresponding notch L in the latch G, the
abutting surfaces of the lug and notch being so sloped as to avoid any tendency of
the arm to escape from the latch. The arm E is passed through a link of the pole
chain, and it is preferably curved slightly, as shown, in order to bring the chain
nearer to and thus throw the greater part of the strain upon the pivot F.
It will be observed that the portion of the strain which comes upon the latch G is
in the direction of its length, and is therefore entirely sustained by its pivot H
and not by the spring I. M is a ring at the end of the latch, by which to pull it
out to the dotted position in order to release the arm E which is also shown opened
out in dotted lines.
The principal parts may be made of iron, and the pivot pins and spring of steel.
The shackle may be reversed, the link C being permanently attached to the pole
chain or strap, and the arm E passed through the ring at the end of the pole, and it
will be readily understood, without further explanation, that the shackle may be
similarly applied between the pole chains or straps and the hames of the collar, or
between the traces and futchels.
Having described the nature of our Invention and the manner of performing the
same, we declare that what we claim as our Invention to be protected by the herein-
before in part recited Letters Patent is, the shackle consisting of the part A,
pivoted arm E, and spring latch G, constructed and combined substantially as shown
and described and applied in the manner and for the purpose specified.
In witness whereof, I, the said Peter Hooker, for myself and the said Edward
Wright, have hereunto set my hand and seal, this Twenty-first day of
September, in the year of our Lord One thousand eight hundred and
seventy-six.
PETER HOOKER. (L.S.)