AN IMPROVED DOUBLE SUCTION PUMP, SUITABLE FOR PUMPING BILGE WATER OUT OF SHIPS."
Year: 1864

page_text: LETTERS PATENT to Henri Druneau, Tinsmith,.and Pierre Laidet, senior,
both of Nantes, in the Department of the Loire Inférieure, in the Empire
of France, for the Invention of "AN IMPROVED DOUBLE SUCTION PUMP,
SUITABLE FOR PUMPING BILGE WATER OUT OF SHIPS."
PROVISIONAL SPECIFICATION left by the said Henri Druneau and
Pierre Laidet at the Office of the Commissioners of Patents, with their
Petition, on the 20th December 1864.
We, HENRI DRUNEAU, Tinsmith, and PIERRE LAIDET, senior, both of Nantes,
in the Department of the Loire Inférieure, in the Empire of France, do hereby
declare the nature of the said Invention for "AN IMPROVED DOUBLE SUCTION
PUMP, SUITABLE FOR PUMPING BILGE WATER OUT OF SHIPS,". to be as follows:-
This pump is formed of two precisely similar parts, each composed, firstly,
of a metal pump barrel of, say, 20 inches in height, 7 in outer diameter,
and 6 in inner diameter. About 4 inches below the upper part is the
opening for outflow, which is, say, 5 inches broad by 24 high.
Secondly, of a copper sockle or barrel seat, of about 10 inches in diameter

page_text: having a joint with ears or lugs, through which pass copper bolts to fix it. In
the centre is an opening for suction of, say, 3 inches in diameter.
Thirdly, of a leather valve of 10 inches in diameter by about of an inch
thick, with a part cut to permit the passage of the water; this cut part is about
5 inches in diameter, and is surmounted by a leaden weight in form of a spherical
cap or lid, having a diameter of nearly 4 inches. This valve is placed on
the copper sockle, and the pump barrel comes upon and covers it. The entire
arrangement being fixed by the aid of 4 copper bolts fitting in the base of the
barrel, the valve, and the sockle.
Fourthly, of a moveable iron collar placed in the middle of the pump barrel,
tied to a fixed iron-bound wooden support, which separates the two arrange-
ments, forming one pump.
Fifthly, of a moveable piston attached to a lever arm, forming part of the
fixed wooden support; these parts are united by means of bolts and keys, or
cottars, easily removeable. The piston is composed of an iron rod of about
of an inch in diameter, with a circular part at the bottom of the piston, so as
to permit the penetration of the rods into the said wooden piston, the diameter
of which is 6 inches, and the beight 4. This height is subdivided into three
parts, the two extreme onės being 1½ inches each, and the central one 2 inches.
This latter is hollowed concentrically about of an inch, and this hollow is
furnished with a leather thong or strap in its entire height and circular
developement, so as to intercept all communication of air along the inner sides
of the pump barrel.
Sixthly, of a moveable brake or handle, of say 37 inches long, 2 inches high,
and of an inch thick, entering into iron cramps fixed at the end of the lever
arm forming part of the fixed wooden upright. At the extremity of this brake
is a circular opening of about 12 inches in diameter, into which is inserted a
double wooden handle.
Seventhly, of a small wooden cap, which covers the upper part of the pump
barrel, a hole cut through the entire thickness of which small cap gives passage
L

page_text: Department of the Loire Inférieure, in the Empire of France, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters.
Patent, bearing date the Twentieth day of December, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Henri Druneau and Pierre Laidet, Her special licence, that we, the said
Henri Druneau and Pierre Laidet, our executors, administrators, and assigns,
or such others as we, the said Henri Druneau and Pierre Laidet, 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 "AN IMPROVED DOUBLE SUCTION PUMP,
SUITABLE FOR PUMPING BILGE WATER OUT OF SHIPS," upon the condition (amongst
others) that we; the said Henri Druneau and Pierre Laidet, our executors or
administrators, by au instrument in writing under our, or one of our, 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 per-
formed, 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 we, the said Henri Druneau and Pierre Laidet,
do hereby declare the nature of our said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement :-
Our improved double suction pump is composed of two precisely similar
parts, each of which consists, firstly, of a metal pump barrel of, say, 20 inches
in height, 7 in outer diameter, and 6 inches in inner diameter. About 4
inches below the upper part is the opening for outflow, which is, say, 5 inches
broad by 2 high.
'
Secondly, of a copper sockle or barrel seat, of about 10 inches in diameter,
having a joint with ears or lugs, through which pass copper bolts to fix it. In
the centre is an opening for suction of, say, 3 inches in diameter.
Thirdly, of a leather valve of 10 inches in diameter by about of an inch
thick, with a part cut to permit the passage of the water; this cut part is
about 5 inches in diameter, and is surmounted by a leaden weight in form of
a spherical cap or lid, having a diameter of nearly, 4 inches.. This valve is

page_text: placed on the copper sockle, and the pump barrel comes upon and covers it.
The entire arrangement being fixed by the aid of four copper bolts fitting in
the base of the pump barrel, the valve, and the sockle.
Fourthly, of a moveable iron collar, which, placed in the middle of the pump
barrel, and tied to a fixed iron-bound wooden support, which separates the
two arrangements of pumps, unites them in one.
Fifthly, of a moveable piston attached to a lever arm forming part of the
fixed wooden support. These parts are united by means of bolts and keys, or
cottars, easily removeable. This piston is composed of an iron rod of about
of an inch in diameter, with a circular part above the piston (not below it, as
erroneously stated in our Provisional Specification), so as to permit the pene-
tration of the rods into the said wooden piston, the diameter of which is 6
inches and the height 4. This height is subdivided into three parts, the two
extreme ones being 14 inches each, and the central one 2 inches. This
latter is hollowed concentrically the thickness of about of an inch, and this
hollow is furnished with a leather thong or strap in its entire height and
circular developement, so as to intercept all communication of air along the
inner sides of the pump barrel.
Sixthly, of a moveable brake or handle of, say, 37 inches long, 2 inches
bigb, and of an inch thick, entering into iron cramps fixed at the end of the
lever arm forming part of the fixed wooden upright. At the extremity of this
brake is a circular opening of about 1 inches in diameter, into which is
inserted a double wooden handle.
Seventhly, of a small wooden cap, which covers the upper part of the pump
barrel, a hole cut through the entire thickness of which small cap gives passage
to the piston rod.
On the accompanying Sheet of Drawing forming part of this our Specification,
Figure 1 shews our improved pump in elevation and vertical section following
the line C, D, Figure 2, which is a plan view and horizontal section of the
same taken through the line A, B, Figure 1. Figure 3 being a plan view of
this lower valve. a, metal pump barrel; b, wooden cap covering the pumps;
c, copper sockle or barrel seat; d, lower leather valve, surmounted by a leaden
weight; e, fixed iron-bound wooden support; piston cut in wood; 9, move-
able leather packing of the piston; h, wooden valve; i, spout; k, moveable
iron brakes or levers; 1, wooden handles; m, moveable iron collar; n, copper
bolts; o, opening for suction made in the copper sockle c; p, water exit in
piston f.
. We would observe, in conclusion, that we do not confine ourselves to the

page_text: precise relative dimensions of parts herein given, as such may be varied without
departure from our Invention, and are simply given as those which we have
found most desirable, and it is scarcely needful to observe that our improved
pump may be made of any required size.
In witness whereof, we, the said Henri Druneau and Pierre Laidet,
have hereunto set our hands and seals, this Fifteenth day of June,
in the year of our Lord One thousand eight hundred and sixty-five.