IMPROVE- MENTS IN MEANS FOR PREVENTING OR LESSENING DAMAGE TO SHIPS FROM COLLISIONS
Year: 1883

page_text: LETTERS PATENT to Johann Heinrich Grell of Hamburg Germany Contractor
of the Ferry-Boat-Line Steinwärder-Hamburg—for an Invention of "IMPROVE-
MENTS IN MEANS FOR PREVENTING OR LESSENING DAMAGE TO SHIPS FROM
COLLISIONS
"
PROVISIONAL SPECIFICATION left by the said Johann Heinrich Grell at
the Office of the Commissioners of Patents on the 3rd September 1883.
JOHANN HEINRICH GRELL of Hamburg Germany, Contractor of the Ferry-Boat-
Line Steinwärder-Hamburg, "IMPROVEMENTS IN MEANS FOR PREVENTING
LESSENING DAMAGE TO SHIPS FROM COLLISIONS
"
OR
The object of this invention is to prevent or lessen the damage arising to ships,
from collisions, by means of one two or more ropes of wire, hemp, or other
suitable material, fastened in any suitable manner to the hull of the ship
Horizontal ropes are drawn very tightly around the hull of the vessel and both
ends connected together-A single rope will be sufficient for a small ship-larger
vessels may be provided with two, three or more.
Vertical ropes may be attached to the stem or beside the stem and their
extremities fixed to the top of the stem and near the water line of the ship
To keep these ropes in their proper position they may be fastened to the hull
by any suitable means such as angle irons, by wire, or cord or other suitable clips.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Johann Heinrich Grell in the Patent Office on the 3rd March 1884.
JOHANN HEINRICH GRELL, of Hamburg, Germany, Contractor of the Ferry-
Boat-Line, Steinwärder-Hamburg, "IMPROVEMENTS IN MEANS FOR PREVENTING OR
LESSENING DAMAGE TO SHIPS FROM COLLISIONS"
The object of my invention is to prevent or lessen the damage arising to ships
from collisions, by means of one, two or more ropes of wire, hemp, or other
suitable material, fastened in any suitable manner to the hull of the ship.
I attain this object by the device illustrated in the accompanying drawings, in
which―
and a
Figure 1 is an elevation of a steamer provided with two horizontal ropes
vertical one; Figure 2 is a view from below of the ship's hull; figure 3 a front
view, and figure 4 a back view thereof; figure 5 is a vertical section of a part of
the hull; and figure 6 a vertical section showing the manner in which the rope is
fastened to the hull.
Similar letters refer to similar parts throughout the several views.
a is a rope of wire, hemp or other suitable material, which is drawn very tightly
around the hull of the vessel, and both ends of which are connected together,
b, b are angle irons fastened to the hull in two parallel lines thus forming grooves
of a depth of about half the diameter of the rope a, which is bedded between the
angle irons. c is a cord or wire drawn over the rope a from one line of the
angle-irons to the other one and fastened thereon, in order to retain the rope a in
the position required. According to the size of the ship, one, two, or more
horizontal ropes a may be used to protect the hull and to distribute the local effect
of a collision over the whole surface of the hull, thus increasing the power of
resistance of the ship.
A vertical rope a¹ fastened in the same manner to the stem serves to lessen the
force of the shock, like a fender.
Having thus fully described my invention, what I desire to claim and secure by
Letters Patent is -
On a ship the combination of one, two, or more ropes a of wire, hemp, or
other suitable material, tightly drawn and connected at both ends with the hull,
substantially as and for the purpose specified.
In witness whereof, I, the said Johann Heinrich Grell, have hereunto set my
hand and seal this Twenty eighth day of February, in the year of our Lord, One
thousand eight hundred and eighty four.
TOTTANN
ΠΕΙΝΡΙΔΗ CRELL
JOHANN HEINRICH GRELL
(r༤)