IMPROVEMENTS IN CATCH AND SLIP HOOKS APPLICABLE TO BOAT LOWERING AND OTHER MECHANISM OR PURPOSES ON BOARD SHIP, VEHICLES, CRANES, AND OTHER MACHINES OR APPARATUS
Year: 1874

page_text: LETTERS PATENT to John Banting Rogers, of Robertsbridge, in the
County of Sussex, for the Invention of "IMPROVEMENTS IN CATCH
AND SLIP HOOKS APPLICABLE TO BOAT LOWERING AND OTHER MECHANISM OR
PURPOSES ON BOARD SHIP, VEHICLES, CRANES, AND OTHER MACHINES OR
APPARATUS."
"
Sealed the 25th March 1875, and dated the 26th September 1874.
PROVISIONAL SPECIFICATION left by the said John Banting Rogers
at the Office of the Commissioners of Patents, with his Petition,
on the 26th September 1874.
I, JOHN BANTING ROGERS, of Robertsbridge, in the County of
Sussex, do hereby declare the nature of the said Invention for “Im-
PROVEMENTS IN CATCH AND SLIP HOOKS APPLICABLE TO BOAT LOWERING AND OTHER
MECHANISM OR PURPOSES ON BOARD SHIP, VEHICLES, CRANES, AND OTHER MACHINES
OB APPARATUS," to be as follows:-
-

page_text: appliances, and be released therefrom by the withdrawal or removal of a
pin or other fastener.
According to one kind of catch and slip hook I bow a piece of metal
to form two legs; one of these has a lever pinned to its end, the other
being divided or slotted up a portion of its length for the reception of a
distinct lever, this lever having a nose or projection upon it looking
towards the opposite leg and being caused to take under the free end of
the first named lever to hold it in place or to prevent it moving in the
reverse direction. The second lever is pinned to its leg some distance
up so that it tumbles over when a pin or holdfast is let go. The above
explains a depending hook from which articles can be caught hold of
and released, but when the hook is attached to the article the first-
named lever has a counterpoise to bring it into position for a second
action as a catch.
According to another construction I arrange the two levers so that
their noses or hooked portions cross the path of each other, the tails
having slots in them for a spring or other bolt to slide into to hold them
taut. The inner portions of the levers are curved and project when the
hooked portions are open, so that supposing a staple or fixing ring to
come foul of the curved portions its pressure would cause the two levers
to cross and hold the staple or ring secure. Tumbler plates are arranged
within the casing in which the hooks are pivotted, and have flanges pro-
jecting, so that in the case of say a vehicle taking beyond a fixed
amount of side motion the pressure of the tumblers against the spring
releases the hooks.
According to another construction I form the two levers with tails
which I release by slipping a lock bolt or strap up or down the leg or
legs.
In applying my Invention to a boat in connection with the lowering
and releasing mechanism I fit one apparatus at the bows and another at
the stern, with the catch levers uppermost, the releasing pins being
formed at the ends of longitudinal rods capable of being worked from,
say, the centre seat, where by the action of an eccentric or double claw
motion moved by a handle both pins can be withdrawn at the same time
and the boat released from the rings of the davit tackles.
For setting up the riggings of ships a set screw or turn buckle can be
fitted to the channel plates or on to the shrouds. The rigging could bo

page_text: instantly released by knocking out the pins by means of a "maul," or
otherwise.
In applying the Invention to cranes or appliances for lowering goods
the apparatus is attached to the fall or to the sling, the goods being held
or suspended from the lever first herein-before referred to. A. toggle
line is used to withdraw the pin or its equivalent from the tumbler lever
by which the first lever is set free.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said John Banting Rogers in the Great Seal Patent
Office on the 25th March 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BANTING ROGERS, of Robertsbridge, in the County of Sussex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of September, in the
year of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Banting Rogers, Her
special licence that I, the said John Banting Rogers, my executors,
administrators, and assigns, or such others as I, the said John Banting
Rogers, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN CATCH AND SLIP HOOKS APPLICABLE TO BOAT LOWERING AND
OTHER MECHANISM OR PURPOSES ON BOARD SHIP, VEHICLES, CRANES, AND OTHER
MACHINES OR APPARATUS," upon the condition (amongst others) that I,
the said John Banting Rogers, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said

page_text: Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said John Banting Rogers, do hereby 5
declaro the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say : —
This Invention relates to constructions of catch and slip hooks by
which connections can be made automatically with rings or other 1
appliances and be released therefrom by the withdrawal or removal of a
pin or other fastener.
My Invention will be clearly understood by reference to the annexed
Drawings and to the following description thereof :-
According to one kind of catch and slip hook such as I have shown 1
in Figures 1 and 2 I bow a piece of metal to form two legs a, a¹; one of
these has a tug lever 6 pinned to its end at c, the other leg a¹ being
divided or slotted up a portion of its length for the reception of a distinct
lever d, Figure 3, this lever d having a nose or projection e upon it
looking towards the opposite leg a¹ and being caused to take under or 2
against the free end of the first-named lever b to hold it in place or to
prevent it moving in the reverso direction. The second lever d is pinned
or pivotted to its leg a¹ some distance up at 9, so that it tumbles over
when a pin or holdfast h is withdrawn or let go.
The above explains a
depending hook from which articles can be caught hold of and be 2
released, but when the hook is attached to an article the first-named
leverd has a counterpoise i to bring it into position for a second action
as a catch, as shown in Figure 4.
According to another construction, as shown in Figures 5 and 6, I
arrange the two levers b and d so that their noses or hooked portions 3
cross the path of each other, the tails having slots in them for a spring
or other bolt j to slide into to hold them taut. The inner portions k of
the levers are curved and project when the hooked portions are open, so
that supposing a staple or fixed ring to come foul of the curved
portions K, K, its pressure would cause the two levers b, d, to cross and 3
hold the staple or ring secure within them. Tumbler plates m, m, are

page_text: .
arranged within the casing n in which the hooks are pivotted, and have
flanges p projecting, so that in the case of, say, a vehicle taking beyond
a fixed amount of side motion the pressure of the tumblers against the
spring releases the hooks.
According to another construction I form the two levers, as in
Figure 7, with tails which I release by slipping a lock, bolt, or strap q
up or down or along the leg or legs. One only of the legs and its lever
need however in some cases be fitted, the lever of the other leg releasing
itself automatically. This plan is applicable for harness traces or other
uses.
In applying my Invention to a boat in connection with the lowering
and releasing mechanism I fit one apparatus at the bow and another at
the stern of the boat, as in Figures 8 and 9, with the catch levers b, d,
uppermost, the releasing pins being formed at the ends of longitudinal
rods r, r, capable of being worked from, say, the centre seat 8, where by
the action of a rock levert or by an excentric or double claw motion
moved by a handle u both pins h, h, at the ends of the rod r, r, can be
withdrawn at the same time and the boat released from the rings 1, 1, of
the falls v, v.
When I use my apparatus in connection with boat lowering appliances
I propose to use an intermediate slip hook and attach a double block
pulley A so that a rope B from each of the davits C, C, can be passed.
round them and be led up through an aperture in the ships' side D and
on to a winch barrel E, the barrel being furnished with a releasing gear
so that the barrel can be freed to run the reverse way for giving off the
ropes B, B, the descent of the boat being then under the control of a
man in the boat, who by an action of a hand lever F can grip more or less
the ropes against the pulley sheaves, the hand lever having in connection
a sliding wedge bolt G which can be forced into contact or withdrawn
as desired. The intermediate slip hook is in direct relationship with one
of the rods h, h, or it may be by a separate rod h³, as in Figures 11
and 12, so that by the movement of the hand lever u the whole of the
slip hooks become released simultaneously and the boat made clear.
The double block pulley and its wedge bolt are shown on a larger scale
in Figure 10.
For setting un the rigging of ships a set screw or turnbuckle w

page_text: The rigging can be instantly released by knocking out the pin / by
means of a maul or otherwise.
In applying the Invention to cranes or appliances for lowering goods
the apparatus is attached to the fall y, as in Figure 14, or to the sling,
the goods being held or suspended from the lever b, first herein-before 5
referred to, a toggle line being used to withdraw the pin h or its
equivalent from the tumbler lever d by which the first lever is set free.
Figure 14 represents an adaptation of my first described slip hook for
barge or boat hauling or towing purposes, or as an apparatus fitted on
shore for retaining ships by their hawsers or other lines at a "lay bye,” 1
or for temporarily attaching, say, two boats together, or for any other
purpose.
Having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim,—
The construction and arrangements of parts constituting catch and 1
slip hooks combined, as herein-before described and shown, and sub-
stantially for the purposes set forth.
Secondly. I claim as part of my said Invention the double pulley
wedge or check rope block, shown in Figures 8, 9, and 10, for the
purposes of boat lowering when used in combination with the catch and 20
slip hook herein-before described.
In witness whereof, I, the said John Banting Rogers, have here-
unto set my hand and seal, this Twenty-fourth day of March,
One thousand eight hundred and seventy-five.