Year: 1897

page_text: I, JONAS EMIL WOLFF, Consulting Engineer, Post Box No. 41, Bergen, Norge,
do hereby declare the nature of this invention to be as follows:-
This invention; relates to improvements in anchors and has for its object to
produce an anchor having two gripping plates which will enable it to have the
greatest holding power; and which will also let go its hold on the ground as
soon as the chain is hauled perpendicular.
In carrying out my invention employ a shank of convenient length the lower
end of which is formed circular and cup or dish shaped; or a circular cup shaped
plate may be secured thereto in any convenient way. Secured upon the said
shank at any suitable distance from the aforesaid cup plate is a square or rect-
angular plate whose area is considerably greater than the end plate so that the
anchor will be given an incline when on even ground. When the chain has been
given out and the strain of the ship commences to act, there will be a pressure
created in the upper end of the anchor thereby producing a balancing motion
whereby the lower end of the anchor with its pressure will tend to press the upper
plate still more into the ground and thereby increase the holding power of the
anchor.
However the anchor falls a portion of the plates grip the ground and by the
quadrated shape of the upper plate the anchor is secured against rolling.
With this anchor there are no claws or palms to get involved in other ships'
chains; and the like difficulties which are now common will not take place.
The length of the anchor, thickness of shank and thickness of plates as well as
their area may be varied to suit each particular ship or boat.
The anchor can be easily cast or it may be forged, the plates being driven on
hot or fastened by keys.
I, JONAS EMIL WOLFF, Consulting Engineer, Post Box No. 41, Bergen, Norge,
do hereby declare the nature of this invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the follow-
ing statement;—
This invention relates to improvements in anchors and has for its object to

page_text: dispense with the ordinary flukes and stock and to substitute two gripping plates
which will enable the anchor to have the greatest holding power, and enable it to
let go its hold on the ground as soon as the chain is hauled perpendicular.
But in order that my said invention may be more readily understood and easily
carried into effect I will proceed to describe the same with reference to the accom-
panying drawings in which
Fig. 1 is an elevation and
Fig. 2 a plan, both partly in section, of an anchor constructed in accordance
with my invention.
Referring to the said drawings, I employ a shank A of convenient length, the
lower end of which is formed with a circular and concave or cup shaped plate or
disc B. Secured upon the said shank at any suitable distance from the aforesaid
disc B is a square or rectangular plate C whose area is considerably greater than
that of the disc B so that the anchor will be given an incline when on even
ground.
When the chain has been given out and the strain of the ship commences to act.
there will be a pressure created in the upper end of the anchor thereby producing
a balancing motion whereby the lower end of the anchor with its pressure will
tend to press the upper plate still more into the ground and thereby increase
the holding power of the anchor.
However the anchor falls a portion of the plates grips the ground and by the
quadrated shape of the upper plate the anchor is secured against rolling.
With this anchor there are no claws or palms to get involved in other ships'
chains and the like difficulties which are now common will not take place.
The length of the anchor, thickness of shank and thickness of plates as well
as their area may be varied to suit each particular ship or boat.
The anchor can be easily cast or forged in one; or the plates may be driven
on hot or fastened by keys.
Or the plate or disc C may be removably secured to enable the anchor to be
stored into the hawse-hole, and either or both of the said discs or plates may
have their edges formed wedge shaped.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
The employment of a square plate, permanently or removably secured to the
shank of an anchor in combination with a circular concave plate at the end of
the anchor shank, substantially as and for the purposes hereinbefore described
and shewn in the accompanying drawings.
Dated thi MAL
2000
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.