A NEW OR IMPROVED ANCHOR
Year: 1858

page_text: LETTERS -PATENT to Charles Boyce, of Tipton, in the County of Stafford,
Anchor Smith, for the Invention of "A NEW OR IMPROVED ANCHOR."
ealed the 4th June 1858; and dated the 5th March 1858.
PROVISIONAL SPECIFICATION left by the said Charles Boyce at the
Office of the Commissioners of Patents, with his Petition, on the 5th
March 1858.
J, CHARLES BOYCE, of Tipton, in the County of Stafford, Anchor Smith,
do hereby declare, the nature of the said Invention for "A NEW OR IMPROVED
ANCHOR," to be as follows:-
My said new or improved anchor is provided with arms turning upon a
centre on the shank, as in anchors of the ordinary construction, and I place
at the back of the arms a moveable cap, which is jointed to the end of the
shank. The said moveable cap bears against and supports and strengthens
the arms of the anchor, and when the anchor is cast out, the turning of the
arms upon their centre causes the moveable cap to slide on the said arms, and
to engage with and throw out the toggle of the lower arm; the said moveable
cap also supports the lower arm, in addition to throwing out the toggle, and
the upper arm resting upon the shank the strain is taken off the throat of the
anchor. The toggle on the upper arm falls and lies flat on the said arm, when
the moveable cap throws out the lower toggle, and there is consequently no
risk of injury to the ship's bottom from the toggle, should the vessel happen to
lay on her anchor. The said moveable..cap constitutes, as it were, a second

page_text: pair of short arms, lying against and supporting the ordinary arms, and sliding
thereon as described. As the moveable cap and the arms of the anchor turn
upon different centres, there is the additional security that if either joint fail,
the arms will be supported by the other joint, instead of attaching the stock
to the shank; by keying through a hole in the middle of the stock, which
weakens the stock, I add a supplementary piece or projection to the stock
where it passes through the shank and key through the said supplementary
piece, by which method of connection the stock is not weakened.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Boyce in the Great Seal Patent Office on the
28th August 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
BOYCE, of Tipton, in the County of Stafford, Anchor Smith, send greeting.
WHEREAS Her 'most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of March, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Charles Boyce, Her special licence that I, the said Charles Boyce, my
executors, administrators, and assigns, or such others as I, the said Charles
Boyce, 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 "A NEW OR IMPROVED ANCHOв," upon
the condition (amongst others) that I, the said Charles Boyce, 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 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 Charles Boyce, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say :-
My Invention consists of the new or improved anchor herein-after par-
ticularly described and illustrated in the accompanying Drawing.

page_text: Figure 1 represents in side elevation, and Figure 2 in front elevation, my
new or improved anchor. The same letters indicate the same parts in the
various Figures.
If the anchor
cap e slides upon
My said new or improved anchor is provided with arms a, b, turning upon
the centre c, the said centre c being carried by the forked lower end d¹ of the
shank d, as in anchors of the ordinary construction; I place at the back of
the arms a, b, a moveable cap e, jointed to the end of the shank d' at f. The
interior surface of the said moveable cape has the same radius as the arms
a, b, and the said cap bears against and supports the said arms a, b. g, h, are.
the toggles of the anchor, turning on the pins or centres i, k, respectively.
When the anchor, Figures 1 and 2, is cast out, the turning of the arms a, b,
upon their centre c causes the cap e to slide on the said arms, and to engage
with and throw out the toggle of the lower arm, as illustrated in Figure 3.
The action of the moveable cap e for the purpose of throwing out the toggles
is as follows:-The said cap e carries at its ends projections or short arms.
1, m, the said small arms l, m, having the positions on the arms a, b, represented
in Figures 1 and 2, before the anchor is cast out. When the anchor is cast
out in the position represented in Figure 3, one of the said small arms
pressing upon the lower end of the toggle g, the said toggle g turns upon its
centre and assumes the position shewn in the said Figure 3.
be cast out so that the arm 6 becomes the lower arm, the
the said arm b, and the end m of the cap e pressing upon the toggle throws
out the said toggle, as described and illustrated with respect to the toggle g
The toggle h on the upper arm b falls and lies flat upon the said arm when
the moveable cap e throws out the lower toggle g, as illustrated in Figure 3,
and there is consequently no risk of injury to the ship's bottom from the
toggle h, should the vessel happen to lay on her anchor. The moveable cap e
supports the lower arm a in addition to throwing out the toggle, and the upper
arm 6 resting upon the shank d, the strain is taken off the throat of the
anchor. The said moveable cap e constitutes, as it were, a second pair of
short arms lying against and supporting the ordinary arms, and sliding
thereon as described and illustrated. As the moveable cap e and arms a, b,
turn upon different centres, there is the additional security that if either
joint fail, the arms will be supported by the other joint. Instead of
attaching the stock of the anchor to the shank by a hole in the middle
of the stock, which weakens the said stock, I attach the stock to the
shank in the manner represented in Figures 2, 4, and 5 of the accompanying
Drawing, that is to say, I add to the stock n a supplementary piece or
projection o; when the stock is inserted in its place in the shank, so that
b

page_text: the boss lies against the edge of the shank, as illustrated in Figure 2,
a key is passed through a hole s in the said supplementary piece or pro-
jection o, and the said stock thereby fixed in its place. In Figure 4 the stock
n is represented in section, and Figure 5 represents the stock n in the position
which it occupies on the anchor when the said stock is partially removed from.
the shank for the purpose of transit. By connecting the stock n to the shank d
in the manner described and represented, the said stock is not weakened..
Having now described the nature of my said Invention and the manner of
carrying the same into effect, I wish it to be understood that I do not limit
myself to the precise details herein described and represented, as the same.
may be varied without departing from the nature of my Invention; but I
claim as my Invention, the new improved anchor herein-before described and
illustrated in the accompanying Drawing, that is to say, an anchor, having a
moveable cap situated at the back of the arms of the anchor, the said moveable"
cap being jointed to the end of the shank, and bearing against and supporting
the said arms; the said cap when the anchor is cast out, sliding on the said
arms and throwing out the toggle on the lower arm, the toggle on the upper
arm being permitted to lie flat upon the upper arm of the anchor.
In witness whereof, I, the said Charles Boyce, have hereunto set my
hand and seal, this Twenty-fifth day of August, in the year of our
Lord One thousand eight hundred and fifty-eight.
Witness,
GEORGE SHAW.
CHARLES BOYCE. (L.S.)