AN IMPROVED SAFETY HOOK
Year: 1852

page_text: LETTERS PATENT to Robert William Mitcheson, of the firm of
Mitcheson and Sons, of Garford Street, in the County of Middlesex,
Anchorsmiths, for the Invention of "AN IMPROVED SAFETY HOOK."
Sealed the 16th March 1858, and dated the 26th October 1852.
PROVISIONAL SPECIFICATION left by the said Robert William
Mitcheson at the Office of the Commissioners of Patents, with
his Petition, on the 26th October 1852.
I, ROBERT WILLIAM MITCHESON, of the firm of Mitcheson and Sons,
of Garford Street, in the County of Middlesex, Anchorsmiths, do
bereby declare the nature of the said Invention for "AN IMPROVED
SAFETY HOOK" to be as follows:-
The improved safety hook is shewn in Figures 1, and 2; Figure 1,
being a side view of the same when open for use, and Figure 2, another
side view when closed. The hook consists of two portions A, and B.
The portion A, has an eye a, by which it may be attached to a rope or
chain, and is connected to the portion B, by a pin 6, in which it is free
to move. The portion B, is slotted out from b, to the end c, and

page_text: embraces the portion A, which is capable of moving within it when
pressure is applied. The object to be held is introduced into the hook,
and as soon as strain is put upon the rope to which the hook is attached
the portion B, is made to assume the position shewn in Figure 2, and
the object held is thereby prevented from slipping from the hook. The
form of the parts may be varied from that shewn in the sketch. The
principal use to which the hook is applicable is the fishing" of
anchors, but it is also adapted for all purposes of lifting and hoisting
goods, &c.
66
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Robert William Mitcheson in the Great Seal
Patent Office on the 26th April 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
ROBERT WILLIAM MITCHESON, of the firm of Mitcheson and Sons, of
Garford Street, in the County of Middlesex, Anchorsmiths, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of October, in the
year of our Lord One thousand eight hundred and fifty-two, in the six-
teenth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Robert William Mitcheson, Her special
licence that I, the said Robert William Mitcheson, my executors, ad-
ministrators, and assigns, or such others as I, the said Robert William
Mitcheson, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after 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 Inven-
tion for "AN IMPROVED SAFETY Hoox," upon the condition (amongst
others) that I, the said Robert William Mitcheson, by an instrument
in writing under my hand and seal, should particularly describe and
ascertain the nature of the said 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.

page_text: NOW KNOW YE, that I, the said Robert William Mitcheson, do
hereby declare 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, that is to say:
My Invention consists in the formation of a hook which on its taking
hold of any resisting body shall encircle such body, or assume the form
of a ring round it.
Figure 1, is a side view of the improved safety hook ready for use;
and Figure 2, another side view in the closed position it assumes after
taking hold of a resisting body. The hook consists of two portions
A, and B. The portion A, has an eye a, by which it may be attached
to a rope or chain; it is connected to the part B, by a pin b, on which
it is free to move. The part B, is slotted out from b, to the end c, and
embraces the part A, which is capable. of moving within it when
pressure is applied. The object to be held is introduced into the hook,
and as soon as strain is put upon the rope to which the hook is attached
the part B, assumes the position shewn in Figure 2, and the object
held is thereby prevented from slipping from the hook. The form of
the parts may be varied from that shewn in the Drawings. The
principal use to which the hook is applicable is the "fishing" of
anchors, but it is also adapted for lifting and hoisting goods and
other like purposes.
And having now described the nature of my said Invention, and in
what manner the same is to be performed, I declare that I claim as of
my Invention the improved safety hook herein-before described and
represented in the Drawings hereunto annexed.
In witness whereof, I, the said Robert William Mitcheson, have
hereunto set my hand and seal, this Twenty-third day of April,
One thousand eight hundred and fifty-three.
ROBERT WILLIAM MITCHESON. (L.S.)