AN IMPROVED SLIP HOOK to be as follows:-
Year: 1884

page_text: I, CHARLES FRANK CONWAY MORRIS, of St Thomas' Buildings, St Thomas' Street,
Southwark, in the County of Surrey, Engineer do hereby declare the nature of my
invention for "AN IMPROVED SLIP HOOK to be as follows:-
"
My Invention relates to improvements on the slipping apparatus described in
the provisional specification of my application for Letters Patent No 4659 dated
1st October 1883, which consisted of two arms, one formed at its upper end with an
eye, shackle or other means for connecting it to the vehicle, pole chain or hames,
and the other end bent round to form part of a circle, to the extreme end of which
a second arm was pivotted and bent so as to complete the circle (intended to receive
the chain or other connection) while its free end was extended so as to be capable
of being laid flat against the top straight part of the first arm, a sliding ring being
then passed over its free end so as to keep the two arms together.
My present improvements consist :-
First. In the employment of the two arms pivotted together as above described,
and in substituting for the sliding ring a spring or snap fastening which will at
once secure the two arms together when the slip hook is closed, and also to allow
the slip hook to be readily opened by simply giving a sharp pull to the free end of
the second arm.
For this purpose the free end of the second arm is pierced with a
hole which when the slip hook is being closed fits over a ball slightly larger in
diameter than such hole, and which is firmly secured to the side of the straight
part of the first arm. The ball has a slit in it which when pressure is applied to
the free end of the second arm allows the two portions of the ball to give or move
inwards and pass through the hole in the second arm, the elasticity of the metal
enabling the two portions of the ball to spring outwards again as soon as the ball
has passed through the hole, whereby the two arms are secured together. To open
the slip hook the free end of the second arm is pulled sharply outwards and causes
the two portions of the ball to give or move inwards again and allow the free end
of the second arm to move over it, when the second arm can turn on the pivot
connecting the two arms, and the slip hook thus be opened. This form of spring or
snap fastening also forms a safety guard against any side pull or strain which may
be brought to bear upon the bottom part of the slip hook.

page_text: Second. In forming the straight part of the first arm so that when the second
arm lies against it the outer surface of the two arms will be flush, and for this
purpose the first arm at the part where the second arm is to lie against it, is
recessed to the same depth as the thickness of the free end of the second arm.
A sliding ring on the first arm can then be passed over the free end of the second
arm and secure the two arms together.
The point at which the two arms are pivotted together may be arranged either
in a line with the straight part of the first arm or any suitable distance to one side
or the other of such line according to requirements.
The slipping apparatus above described can be applied to all purposes in which
it is desired to provide means for readily detaching a chain, rope or other attachment
from a part to which it is connected when in use, but from which it may be necessary
to disconnect it while a strain or pull is being exerted thereon.

page_text: I, CHARLES FRANK CONWAY MORRIS, of St Thomas' Buildings, St Thomas' Street,
Southwark, in the County of Surrey, Engineer, do hereby declare the nature of my
invention for "AN IMPROVED SLIP HOOK and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to improvements on the slipping apparatus described in
the provisional specification of my application for Letters Patent No 4659 dated
1st October 1883, which consisted of two arms, one formed at its upper end with
an eye, shackle or other means for connecting it to the vehicle, pole chain or hames,
and the other end bent round to form part of a circle, to the extreme end of which
a second arm was pivotted and bent so as to complete the circle (intended to receive
the chain or other connection) while its free end was extended so as to be capable
of being laid flat against the top straight part of the first arm, a sliding ring being
then passed over its free end so as to keep the two arms together.
My invention is illustrated in the accompanying drawings, in which
Fig. 1 is an elevation of one form of slip hook showing the parts in the closed
position; and Fig. 2 is an elevation of same showing the parts in the open
position.
Fig. 3 is a modification of the means employed to secure the parts of the
slip hook in the closed position, and Figs 4, 5 and 6 are detail views of this
arrangement.
Fig. 7 shows a further modification of the means employed to keep the parts of
the hook in the closed position.
In all these Figures the hook itself is composed of two parts or arms A and B,
the arm A being formed at its upper end with an eye A' for connecting it to the
vehicle, pole chain or hames, and the other end bent round (as shown at A') to
form part of a circle, to the extreme end of which the second arm B is pivotted
and bent (as shown at B¹) so as to complete the circle (intended to receive the
chain or other attachment), while its free end is extended (as shown at B³) so as:
to be capable of being laid flat against the top straight part of the arm A. It will
be seen that the part B¹ of arm B extends beyond the point where the two arms A
and B are pivotted together, and forms more than half the circle to receive the
chain or other attachment, the bent part of arm A being recessed to receive such
extension, so that any strain upon such attachment will tend to keep the two parts
or arms A and B in the closed position.
The straight part of the arm A is recessed for a distance equal to the length of
the straight part B2 of the arm B, so that the outer surface of the two arms when
the hook is closed will be flush.
Referring to Figs. 1 and 2 it will be seen that in order to keep the two arms in
the closed position when there is no strain upon the chain or other attachment,
a ring C is mounted on the straight part of the arm A, and is capable of sliding.
along such arm so as to be brought over the upper free end of arm B. A piece of
leather, india rubber or other yielding material D is inserted in or secured to the
arm A, and the ring C passes over it, the object being to create sufficient friction to
prevent the ring C sliding along the arm A if the hook is subjected to a continual
vibration or shaking.
In the modification of this arrangement shown in Figs. 3, 4, 5 and 6 the sliding
ring is replaced by a clip or jaw E pivotted to the arm A, and having two cheeks El
which pass over the sides of such arm, while the cross piece E' connecting these two

page_text: cheeks rests upon the outer surface of such arm, and an extension E³ of this cross
piece bears against the outer surface of the arm B when the two arms A and B are
closed. The lower ends of the cheeks E¹ are each provided with a projection E
which slides in a groove F formed in the arm A, the form of such grooves being
shown more clearly in Fig. 6, by which it will be seen that they are deeper at the
bottom than at top, so that when the clip E is turned on its pivot in opening the
hook the cheeks E¹ will be forced outwards until the projections E enter the
narrow part of the grooves F, the cheeks being made of sufficiently elastic metal
to allow this. The continued turning of the clip upon its pivot will bring the
projections E in contact with the under surface of the straight part B2 of arm B,
and so cause this arm to turn on its pivot. In closing the hook the projections E,
will at the end of the travel of clip È spring into the deep part of the grooves F,
and so securely hold the arms A and B in the closed position. In order to turn the
clip E the extension E³ is formed with a ring curl for enabling it to be grasped by
the hand, or a cord or chain may be secured to same when desired to open the
hook from a distance.
A further modification of the device for holding the arms A and B together in
the closed position is shown in Fig. 7, and consists in substituting for the sliding
ring Ca spring or snap fastening which will at once secure the two arms A and B
together when the slip hook is closed, and also allow the slip book to be readily
opened by simply giving a sharp pull to the free end B of arm B. For this purpose
the free end B of the arm B is pierced with a hole G, which when the slip hook is
being closed fits over a ball H slightly larger in diameter than such hole, and which
is firmly secured to the side of the straight part of the arm A. The ball H. has a
slit H'in it, which when pressure is applied to the free end of the arm B allows the
two portions of the ball to give or move inwards and pass through the hole G in
the arm B, the elasticity of the metal enabling the two portions of the ball to spring
outwards again as soon as the ball has passed through the hole, whereby the two
arms A and B are secured together. To open the slip hook the free end B2 of
ȧrm B is pulled sharply outwards and causes the two portions of the ball H to give
or move inwards again and allow the free end B' of arm B to move over it, when
the arm B can turn on the pivot connecting the two arms A and B, and the slip
hook thus be opened.
These constructions of fastenings also form a safety guard against any side pull
or strain which may be brought to bear upon the bottom part of the slip hook.
The opening formed by the bent portions of the arms A and B instead of being
a circle may be of an elliptical or other suitable form.
The point at which the two arms are pivotted together may be arranged either
in a line with the straight part of the first arm or any suitable distance to one side
or the other of such line according to requirements.
The slipping apparatus above described can be applied to all purposes in which
it is desired to provide means for readily detaching a chain, rope or other attachment,
from a part to which it is connected when in use, but from which it may be
necessary to disconnect it while a strain or pull is being exerted thereon.
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-
1. The improved slip hook consisting of two arms A and B pivotted together
and bent at one end so as to form between them a circular or other suitable
opening, to receive a chain or other attachment, the part which encloses the space
being in one arm caused to extend beyond the pivot connecting the two arms, and
the other arm recessed to receive such extension, all substantially as and for the
purposes herein described.
2. In the improved slip hook consisting of two arms constructed in the manner
described in the preceding claim, making the straight parts of the arms A and B so
that their outer surfaces are flush when the slip hook is closed, substantially as
described and shown.

page_text: 3. The use with the improved slip hook described of a sliding ring C mounted
on the straight part of arm A, and capable of being moved over the free end of
arm B, for the purpose of securing the two arms A and B in the closed position,
substantially as herein described and shown in the drawings.
4. The use with the improved slip hook described of the spring clip or jaw E
pivotted to the straight part of arm A, and capable of being turned so as to bring
its extension E3 in contact with the outer surface of the arm B when the arms A
and B are closed, for the purpose of securing the latter in this position, substantially
as described and shown.
5. The use with the improved slip book described of a snap or spring fastening,
consisting of a spring ball H which passes through a hole G in the straight part B³
of arm B, such ball H being secured to the arm A and formed with a slot to allow
the two parts of the ball to close together or move inwards, when pressure or force
is applied to the arm B in the act of opening or closing the hook, for the purpose
of holding the arms A and B in the closed position, and of allowing them to be
readily opened when desired, all substantially as described and shown.
Dated this 30th day of October 1884.
ALLISON BRO8,
Agents for the Applicant.