IMPROVEMENTS IN MACHINERY FOR RAISING ANCHORS, STOPPING CABLES, PREVENTING CABLES FROM RIDING, AND OTHER LIKE PURPOSES
Year: 1861

page_text: LETTERS PATENT to George Daniel Davis, of Number 3, Bromley
Terrace, Saint Leonard's Road, in the County of Middlesex, and Joseph
Davis, of Number 20, Archer Terrace, East India Road, in the same
County, for the Invention of "IMPROVEMENTS IN MACHINERY FOR RAISING
ANCHORS, STOPPING CABLES, PREVENTING CABLES FROM RIDING, AND OTHER
LIKE PURPOSES."
Sealed the 16th October 1861, and dated the 24th April 1861.
PROVISIONAL SPECIFICATION left by the said George Daniel Davis
and Joseph Davis at the Office of the Commissioners of Patents, with
their Petition, on the 24th April 1861.
We, GEORGE DANIEL DAVIS, of Number 3, Bromley Terrace, Saint
Leonard's Road, in the County of Middlesex, and JOSEPH DAVIS, of
Number 20, Archer Terrace, East India Road, in the same County, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
MACHINERY FOR RAISING ANCHORS, STOPPING CABLES, PREVENTING CABLES FROM
RIDING, AND OTHER LIKE PURPOSES," to be as follows:-
The object of this Invention is to give greater security to windlasses, greater
facility in stopping cables and raising anchors, and also to prevent the cable
from riding while the anchor is being hove in; to effect this we construct a
metal frame with one or two compartments. The shape or form of such
frame is made to fit the windlass to which it is applied. In each compart-

page_text: inent.
ment of the frame we work a metal chock or tongue, so constructed that when
pressed against the cable round the windlass will prevent more cable running
out than may be required. By easing the chock or tongue from the windlass,
the cable has perfect freedom to be paid out if required. The operation of
raising or pressing the chock or tongue against the cable, or releasing the
same is performed by means of a lever, screw, or other mechanical arrange-
The chock or tongue can be wedged firmly against the cable by metal
or wooden wedges which give great security and support, and take all strain
from the windlass while the ship is riding at anchor, at the same time dis-
pensing with the use of the ordinary riding chocks and stoppers. In raising
anchor the cable passes through or between the compartments of the frame,
and each turn of the cable is kept separate by bearing against the sides
of the frame. On the top of the metal frame a pawl is fitted which takes
every alternate link while being hove in, and prevents the cable from running
out. The metal frame also keeps the cable in one position, or part of tho
windlass, and prevents it from riding while being hove on board, and conse-
quently the heavy surging and loss of cable is prevented. The application of
the metal frame to riding bitts is as follows:-The riding bitts must be of a
similar shape or form to those commonly used, or nearly so, but at the lower
part of the bitt we bring out a projecting piece or plate connected or discon-
nected, or cast to the bitt. At the end of this plate, or projecting piece, are
three sides which form a frame or box similar in construction to the frame.
referred to above, and contains a metal chock or tongue, which moves horizon-
tally towards the bitt by the application of a lever or other means, and presses
the cable against the flat part of the bitt, whereby it is prevented from running
out more than required.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed.
by the said George Daniel Davis and Joseph Davis in the Great Seal
Patent Office on the 24th October 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, GEORGE
DANIEL DAVIS, of Number 3, Bromley Terrace, Saint Leonard's Road, in
the 'County of Middlesex, and JOSEPH DAVIS, of Number 20, Archer Terrace,
East India Road, in the same County, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of April, in the year of our
Lord One thousand eight hundred and sixty-one, in the twenty-fourth year

page_text: of Her reign, did, for Herself, Her heirs and successors, give and grant
unto us, the said George Daniel Davis and Joseph Davis, Her special licence
that we, the said George Daniel Davis and Joseph Davis, our executors,
administrators, and assigns, or such others as we, the said George Daniel
Davis and Joseph Davis, our 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 MACHINERY FOR RAISING ANCHORS, STOPPING CABLES, PRE-
VENTING CABLES FROM RIDING, AND OTHER LIKE PURPOSES," upon the condition
(amongst others) that we, the said George Daniel Davis and Joseph Davis,
our executors or administrators, by an instrument in writing under our, or
their hands and scals, or under the hand and seal of one of us or them,
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.
66
NOW KNOW YE, that I, the said Joseph Davis, 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 :-
The object of the improvements is to give greater security in the working
of windlasses in raising anchors or other weights, and also in working ships'
"stoppers." But that the nature of the improvements, and the means which
we adopt in carrying the same into effect may be fully understood, we will
proceed to describe the Drawing annexed.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a sectional view, and Figure 2 a plan view of parts of a ship's
windlass, to which our improvements are applied; Figures 3 and 4 show parts
separately in each of the views; similar letters indicate like parts wherever
they occur. a is the windlass; b, a cable supposed to be acting in raising an
anchor or other like weight; c, c, c, are parts of a metal frame, between which
the cable is controlled to move, and by which it is prevented from shifting
from the smaller to the larger diameter of the windlass, or what is commonly
called "riding" or of slipping from a larger to a smaller diameter of the
windlass so as to cause one part of the cable to get over another, or what is
commonly called "surging." Each turn of the cable is kept separate from

page_text: insure this, the edges of the parts
nearly as may be to the surface of
the other by means of the parts c, c, and to
c, c, c, towards the windlass are formed as
it. The parts c, c, c, are formed on, or are affixed to the base c¹, and they
receive between them the chocks or tongues d, d, one of which is shown separately
at Figure 3, whilst Figure 4 is a back view of the chocks or tongues d, d, and
frame c, c¹. These chocks or tongues are capable of movement between the
plates c, c, on the base c¹, and they are operated by the lever e affixed to the
axis e¹, which is capable of turning in bearings formed in the casting c¹, and it
has affixed to it the arms e², which are formed with slots to receive the pro-
jecting ends of a rod d³ passing through the chocks & with capability of moving
those chocks in either direction. By depressing the lever e, the chocks & will
be caused to press against the cable b, and thereby prevent its further motion
whilst the ship to which the improvements are applied is riding at anchor, or
for other purpose. In place of a lever a screw or other mechanical means may
be adopted for the compression of the tongues or chocks d against the cable,
and the chocks may be held against the cable when the ship is riding at
anchor by means of wedges or other filling pieces applied between the back of
the chocks and the frame c². By these means the necessity for the ordinary
riding chocks and stoppers may be avoided.
Figure 5 shows a slight modification of the above; similar letters are
employed to indicate corresponding parts. In this case the depression of the
outer end of the lever e causes the chocks.d to be raised somewhat, whilst they
are borne towards the cable, and in this case the filling pieces or wedges will
be applied underneath the tongues or chocks d; f is a pawl turning on the
axis f, with the point in position to enter every alternate link of the cable,
and thereby prevent it slipping backwards. Figure 6 shews two views of
one of the chocks d adapted to the arrangement shown by Figure 5; Figure 7
shows another modification in which the chocks are of a curved form, as indi-
cated by the separate view, Figure 8, and they are affixed to the axis e¹, so
that when the handle lever e is depressed, the front part d' of the chocks will
be pressed against the links of the cable to hold it. Figures 9 and 10 show a
side view and plan of a riding bit or stopper according to our improvements.
The cable will be passed round the upright 9 between the parts g', g; his a
.moveable piece capable of sliding within the frame g³, g³, and it is operated
by a levere affixed to the axis e¹, and having arms, with slots to embrace
the bolt h³ carried by the sliding piece or chock h.
When it is desired to stop a cable passed between the parts g', g², the lever e
will be depressed, by which the sliding piece will be caused to press on the
cable, and hold it as desired.

page_text: Having thus described the nature of our improvements, and the means we
bave found to answer in carrying the same into effect, we would have it
understood that we do not claim the various parts separately considered, nor
do we confine ourselves to the precise details shown and described; but what
we do claim is, the adaptation or combination of means to facilitate the raising
of anchors, stopping cables, preventing cables from riding, and other like pur-
poses, substantially as described.
In witness whereof, I, the said Joseph Davis, have hereunto set my
hand and seal, this Twenty-second day of October, in the year of our
Lord One thousand eight hundred and sixty-one.
Witness,
WILLIAM Brookes.
73, Chancery Lane, London,
Patent Agent.
DAVID.
(L.B.)