AN IMPROVED SHEAVE OR PULLEY FOR SHIPS' BLOCKS OR OTHER PURPOSES."
Year: 1867

page_text: LETTERS PATENT to Georges Henry Nick, of Paris, Passage Saulnier,
No. 11, in the French Empire, for the Invention of "AN IMPROVED SHEAVE
OR PULLEY FOR SHIPS' BLOCKS OR OTHER PURPOSES."
PROVISIONAL SPECIFICATION left by the said Georges Henry Nick
at the Office of the Commissioners of Patents, with his Petition, on the
11th December 1867.
I, GEORGES HENRY NICK, of Paris, Passage Saulnier, No. 11, in the French
Empire, do hereby declare the nature of the said Invention for "AN IMPROVED
SHEAVE OR PULLEY FOR SHIPS' BLOCKS OR OTHER PURPOSES," to be as follows:-
Ships' pulleys, sheaves, or blocks have hitherto generally been made of
lignum vitæ in one piece, and sometimes they have been made of cast iron,
bronze, or porcelain. These sheaves or pulleys have many objections which
my Invention is intended to obviate.
My Invention consists in making sheaves or pulleys from wood and inetal
combined. I make the body or disc of beech or other ordinary wood and I
cover the grooved periphery with a strip of brass, iron, or other metal, the
edges of which are turned over and stamped against the sides of the wood;

page_text: I can thus give the pulley a deeper groove than is usually made in pulleys of
lignum vitæ and the slipping of the ropes thereon is thereby prevented. To
prevent wear at the centre or to readily replace the nave I form a central
oval opening in the body or disc, and I fit tightly therein a brass or other
metal tube oval externally and internally. In this tube I fit a bearing oval
.externally and cylindrical internally. This bearing can be taken out when
worn and another inserted. Two metal washers are secured one to each face
of the body to protect the wood.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Georges Henry Nick in the Great Seal Patent Office
on the 30th May 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGES
HENRY NICK, of Paris, Passage Saulnier, No. 11, in the French Empire,
send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her. Letters
Patent, bearing date the Eleventh day of December, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Georges Henry Nick, Her special licence that I, the said Georges
Henry Nick, my executors, administrators, and assigns, or such others
as I, the said Georges Henry Nick, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time and
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
"AN IMPROVED SHEAVE OR PULLEY FOR SHIPS' BLOCKS OR OTHER PURPOSES," upon
the. condition (amongst others) that I, the said Georges Henry Nick, my
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 Georges Henry Nick do hereby
declare the nature of my said Invention, and in what manner the same

page_text: is to be performed, to be particularly described and ascertained in and by
the following statement thereof, reference being had to the Drawings
hereunto annexed, that is to say:
Ships' pulleys, sheaves, or blocks have hitherto generally been made of
lignum vitae in one piece, and sometimes they have been made of cast iron,
bronze, or porcelain. These sheaves or pulleys have many objections which
my Invention is intended to obviate.
-
My Invention consists in making sheaves or pulleys from wood and metal
combined. I make the body or disc of beech or other ordinary wood; and. I:
cover the grooved periphery with a strip of brass, iron, or other metal, the
edges of which are turned over and stamped against the sides of the wood; I
can thus give the pulley a deeper groove than. is usually made in pulleys of
lignum vitae, and the slipping of the ropes thereon is thereby prevented. To
prevent wear at the centre or to readily replace the nave I form 4 central
oval opening in the body or disc, and I fit tightly therein a brass or other
metal tube oval externally and internally. In this tube I fit a bearing oval
externally and cylindrical internally. This bearing can be taken out when
worn and another inserted. Two metal washers are secured one to each face
of the body to protect the wood.
My Invention will be fully understood by the accompanying Drawings.
Figure 1 is an external view, and Figure 2 a section of one of my combined
wood and metal sheaves or pulleys complete and ready for use. Figures 3 and 4
represent the disc or body a, which is of ordinary wood; a groove is formed
in its periphery and an oval opening 6 in the centre. I force therein a false
nave c of brass or other suitable metal; this false nave consists of tube oval
both externally and internally; it is represented separately in Figure 5. I
afterwards fit into the false nave or tube c a bearing d which is a metal tube
shown separately in Figure 7; it is externally of the same oval form as the
tube c, but its central opening is cylindrical to receive the axis or spindle. I
then secure by screws two metal washers f, f, one to each face of the body or
disc a; these washers, one of which is shown separately in Figure 6, give to
the centre of the pulley or sheave a thickness greater than the thickness at
the circumference, and thus protect the faces of the wood. The groove of
the disc or body a is covered with a strip of metal h, it is a ring stamped
without soldering which exactly takes the form of the groove and is turned
over more or less against the sides of the wood.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim constructing
sheaves or pulleys for ships' blocks or other purposes of wood and metal com-

page_text: bined substantially as herein-before described, the main features of my Inven-
tion being,―
First. The metal covering to the periphery and to the sides or faces, or a
portion of the sides or faces of the wooden body or disc.
Secondly. The false nave of oval form fitted in the centre of the pulley or 5
sheave.
And, thirdly. The metal bearing fitted into the false nave, and capable of
being removed when worn, all substantially as herein-before explained and
represented in the accompanying Drawings.
In witness whereof, I, the said Georges Henry Nick, have hereunto 1
set my hand and seal, this Twenty-seventh day of April, One
thousand eight hundred and sixty-eight.
Witness,
CH. ARMENGAUD, J.,
Civil Engineer,
G. HENRY NICK. (L.B.)
23, Boulev de Strasbourg,
Paris.