IMPROVEMENTS IN SWIVEL HOOKS AND SUCH LIKE FASTENERS
Year: 1853

page_text: LETTERS PATENT to George Lee Lysnar, of 85, Park Street,
Grosvenor Square, in the County of Middlesex, for the Invention
of Tennoun
"
Sealed the 16th April 1853, and dated the 12th February 1853.
PROVISIONAL SPECIFICATION left by the said George Lee
Lysnar at the Office of the Commissioners of Patents, with his
Petition, on the 12th February 1853.
I, GEORGE LEE LYSNAR, of 85, Park Street, Grosvenor Square, in
the County of Middlesex, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN SWIVEL HOOKS AND SUCH LIKE FASTENERS"
to be as follows:-
This Invention consists of forming swivel hooks and such like
fasteners, each with one portion of the side capable of sliding up
and turning on the axis, the moveable part being constantly borne
upon by a spring tending to force and hold the moveable part
shut; and when shut, the article within the eye will be securely
retained till the moveable part is slided, and then turned on its

page_text: SPECIFICATION in pursuance of the conditions of the Letters
Patent, filed by the said George Lee Lysnar in the Great Seal
Patent Office on the 8th August 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, İ,
GEORGE LEE LYSNAR, of 85, Park Street, Grosvenor Square, in the
County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twelfth day of February, in the
year of our Lord One thousand eight hundred and fifty-three, in the
sixteenth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said George Lee Lysnar, Her
special licence that I, the said George Lee Lysnar, my executors,
administrators, and assigns, or such others as I, the said George Lee
Lysnar, 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 SWIVEL HOOKS AND SUCH LIKE
FASTENERS," upon the condition (amongst others) that I, the said
George Lee Lysnar, 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 per-
formed, 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 George Lee Lysnar, do hereby
declare the nature of the 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):

page_text: This Invention consists of forming swivel hooks and such like
fasteners, each with one portion of the side capable of sliding up and
turning on the axis, the moveable part being constantly borne upon
by a spring tending to force and hold the moveable part shut; and,
when shut, the article within the eye will be securely retained till
the moveable part is slided, and then turned on its axis in opposition
to the spring; by which means a more secure and safe swivel hook,
or such like fastening, will be produced.
And in order that my Invention may be more fully understood
fasteners, each with one portion of the side capable of sliding up and
turning on the axis, the moveable part being constantly borne upon
by a spring tending to force and hold the moveable part shut; and,
when shut, the article within the eye will be securely retained till
the moveable part is slided, and then turned on its axis in opposition
to the spring; by which means a more secure and safe swivel hook,
or such like fastening, will be produced.
.
And in order that my Invention may be more fully understood
and readily carried into effect, I will proceed to describe the means
pursued by me.
DESCRIPTION OF THE DRAWING.
Figure 1, shows a swivel hook constructed according to my In-
vention; Figure 2, shows the same swivel hook, with the side part
raised; Figure 3, shows the same swivel hook closed, but partly in
section, in order that the nature of the parts may be more readily
understood; and Figure 4, shows the hook and its stem separately.
a, is the hook and its stem, such stem forming the axis on which the
other parts turn; b, is the moveable part of the side of the hook.
This moveable part is affixed to, or forms part of, the boss b, within
the hollow part of which there is a spring c, which at all times tends
to retain the part b!, of the side of the hook closed. d, is a ring,
which, when it is for a swivel hook, is made capable of turning
freely on the stem or axis of the hook; and the hollow part of the
boss b, is made capable of sliding off the tubular boss d', fixed to
the ring d. If it is not desired that the hook should not be a swivel
hook, then the stem of the hook and the parts d, d', may be fixed
together. e, is a screw nut and washer for retaining the parts
together; but they may be fixed by other means. The part 1, of
the hook, when shut, is retained in a groove at a¹, by which the
part 1, is prevented from turning; and it can only be caused to
turn when it has been slided up the stem of the hook, so as to
remove the part 6', out of the notch or groove at a¹; but the notch
or groove may be dispensed with.
DESCRIPTION OF THE DRAWING.
Figure 1, shows a swivel hook constructed according to my In-
vention; Figure 2, shows the same swivel hook, with the side part
raised; Figure 3, shows the same swivel hook closed, but partly in
section, in order that the nature of the parts may be more readily
understood; and Figure 4, shows the hook and its stem separately.
a, is the hook and its stem, such stem forming the axis on which the
other parts turn; b₁, is the moveable part of the side of the hook.
This moveable part is affixed to, or forms part of, the boss b, within
the hollow part of which there is a spring e, which at all times tends
to retain the part 6, of the side of the hook closed. d, is a ring,
which, when it is for a swivel hook, is made capable of turning
freely on the stem or axis of the hook; and the hollow part of the
boss b, is made capable of sliding off the tubular boss d', fixed to
the ring d. If it is not desired that the hook should not be a swivel
hook, then the stem of the hook and the parts d, d', may be fixed
together. e, is a screw nut and washer for retaining the parts
together; but they may be fixed by other means. The part U, of
the hook, when shut, is retained in a groove at a¹, by which the
part 6, is prevented from turning; and it can only be caused to
turn when it has been slided up the stem of the hook, so as to
remove the part b', out of the notch or groove at a¹; but the notch
or groove may be dispensed with.

page_text: Having thus described the nature of my Invention, and the
manner of performing the same, I would have it understood that I
do not confine myself to the precise forms of the parts, nor do I
claim the parts separately; but what I claim is, the combination of
parts herein described in constructing swivel hooks, and such like
fasteners..
In witness whereof, I, the said George Lee Lysnar, have here-
unto set my hand and seal, this Eighth day of August, in
the year of our Lord One thousand eight hundred and fifty-
three
Witness,
S. CARPMAEL.
GEORGE LEE LYSNAR. (L. S.)
.