A NEW ..OR IMPROVED DOUBLE GRIP ANCHOR
Year: 1880

page_text: LETTERS PATENT to John Evelyn Liardet, of No. 4, Breakspears Road,
Wickham Park, Brockley, in the County of Kent, for an Invention of "A NEW
..OR IMPROVED DOUBLE GRIP ANCHOR."
PROVISIONAL SPECIFICATION left by the said John Evelyn Liardet at the
Office of the Commissioners of Patents on the 3rd April 1880.
JOHN EVELYN LIARDET, of No. 4, Breakspears Road, Wickham Park, Brockley,
in the County of Kent. "A NEW OR IMPROVED DOUBLE GRIP ANCHOR."
The object of my Invention is to give greater strongth of grip, which grip can
never fail of taking effect under any circumstances. It offers also from its
contruction an easier and snugger stowage on board ship, and forms a lighter
anchor than is generally used for ships according to their tonnage, and one that can
never fail to take the ground and do its work in an absolutely reliable manner.
My Invention consists in constructing anchors in such manner that not only
are the arms provided with flukes, but that in the upper part or stock flukes are
also provided. Those parts carrying the flukes both at the arms and stock are
carried by or secured to the shank in such manner by a pin joint that they are free
to revolve or move thereon to a limit of forty-five degrees, so that in what manner
soever the anchor takes the ground the flukes enter and take a firm grip, and
a plug is provided to hold the flukes in their firm position, a screw securing the
plug. When the arms or parts carrying the flukes are released from their hold or
grip they will, that is to say, at all times when not taking the ground, assume a
position in a line, or nearly so, with the shank lying along side of it, so that the
anchor may not only stow snugly but also offer but little resistance in passing
through the water. Suitable shackles for buoy ropes are provided at head of
anchor with shackle pin and forelock, and shackle pin and forelock for main chain
cable to hold the anchor by and moor the ship.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Evelyn Liardet in the Great Seal Patent Office on the 2nd
October 1880.
JOHN EVELYN LIARDET, of No. 4, Breakspears Road, Wickham Park, Brockley,
in the County of Kent. "A NEW OR IMPROVED DOUBLE GRIP ANCHOR.”
The object of my Invention is to give greater strength of grip, which grip can
nover fail to take effect under any circumstances. Anchors constructed according
to my Invention cannot fail to take the ground and do their work in an absolutely
reliable manner.
My Invention consists in constructing anchors in such manner that the means of
holding or gripping are increased by providing them with additional or auxiliary
arms and flukes at places suitable for my purpose.
In order that the nature of my said Invention, and the manner in which the
same is effected, may be particularly described and ascertained, this Specification is
accompanied by a Sheet of Drawings having Figures and letters of reference marked
thereupon, the like letter being used to denote a similar or corresponding part in
each Figure.
In one form of anchor according to my Invention, that shown in Figures 1, 2,
and 3, in the Drawings (Figure 1 being a side elevation; Figure 2 a section, and
Figure 3 a half plan and half section of the same) it will be seen that in addition
to the flukes a, a, carried by the primary arms b, b, additional or auxiliary
flukes a¹, a', are provided, carried on the auxiliary arms b¹, b'. The auxiliary
armis b, b, with their flukes a', a', may be secured to the shank by a pin, nut, and
bolt, as shown at c, or may be otherwise suitably secured. The position of the
arms b, b, and b¹, b, relatively to each other is shown in the Drawing. The
arms b, b, as well as those marked b', bl, are not rigidly fixed on shank but can
turn to a certain extent, being pivotted at d. Where these arms meet and are
joined a lever piece e is provided, so formed that it will in active position pass
through the opening provided and fit on to the levers c' of flukes a¹, a², and force
both sets of the flukes a and arms b into the ground. It will be seen, therefore, that
when the flukes a, a, of primary arms b, b, take the ground, any tendency to drag
will be resisted by the Hukes a', a', of auxiliary arms b¹, b¹, which, when taking
their bite will, whilst themselves taking a firm grip, press by means of their lever
piece e on the primary arms b, b, and Hukes a, a, and thus effectually secure the
grip of the anchor. This anchor may or may not be provided with a stock, and it
will be seen offers great facilities for snug stowage.
In another form of anchor, according to my Invention, in addition to the primary
arms b, b, and flukes a, a, at the end or bottom of shank I provide where the stock
would otherwise be auxiliary arms b¹, b¹, and flukes a', a¹.” In each case the arms
are free to turn on the shank within certain limits.
This form of anchor is shown in Figures 4, 5, and G. Figure 4 being an eleva-
tion; Figure 5 a section, and Figure 6 half plan, half section. The manner in
which the arms are secured in shank is shewn more particularly at c, Figures 5
and 6, by means of a plug piece and a pin securing the plug pieco (Figure 6);
inore than one pin may be used if necessary. It will be seen that in what manner
soever the anchor takes the ground the flukes cannot fail to enter and take firm
grip. When the grip is released, and at all times when the anchor is not taking
the ground, the arms will assume a position in a line parallel, or nearly so, to
shank, lying alongside of it, so that the anchor may not only stow snugly but will
also offer very little resistance in passing through the water.
Suitable shackles for buoy ropes are provided at head of anchor with shackle pin,
and forelock for main chain cable to hold the anchor by and moor the ship.
Having now particularly described and ascertained the nature of my said

page_text: Invention, and the manner in which the same is effected, what I claim and desire
to secure by the herein before in part recited Letters Patent is, the increase of
gripping power by means of the additional flukes; the said flukes, the mode of
securing the flukes, and their arms; and from their construction the non liability
to choke in whatever ground they moor in, and their action and operation, all as
described and illustrated in this Specification, and in the accompanying Drawings.
In witness whereof, I, the said John Evelyn Liardet, have hereunto set my
hand and scal, this Second day of October, One thousand eight hundred
and eighty.
J. EVELYN LIARDET. (LS.)