IMPROVEMENTS IN PUMPS OR APPARATUS FOR RAISING WATER AND OTHER LIQUIDS TO ANY HEIGHT BY SUCTION, OR BY SUCTION AND COMPRESSED AIR, AND WITHOUT THE LIQUIDS PASSING THROUGH Dana
Year: 1877

page_text: LETTERS PATENT to Louis Legendre, of Kennington, in the County of Surrey,
Engineer, for the Invention of "IMPROVEMENTS IN PUMPS OR APPARATUS FOR
RAISING WATER AND OTHER LIQUIDS TO ANY HEIGHT BY SUCTION, OR BY
SUCTION AND COMPRESSED AIR, AND WITHOUT THE LIQUIDS PASSING THROUGH
Dana"
Sealed the 25th June 1878, and dated the 29th December 1877.
PROVISIONAL SPECIFICATION left by the said Louis Legendre at the Office
of the Commissioners of Patents on the 29th December 1877.
LOUIS LEGENDRE, of Kennington, in the County of Surrey, Engineer. “IM-
PROVEMENTS IN PUMPS OR APPARATUS FOR RAISING WATER AND OTHER LIQUIDS
TO ANY HEIGHT BY SUCTION, OR BY SUCTION AND COMPRESSED AIR, AND WITHOUT
THE LIQUIDS PASSING THROUGH THE PUMPS."
This Invention relates to pumps or apparatus for raising water or other liquids
to any desired height or from any desired depth, either by means of suction alone
or combined with compressed air in such a manner that the water or other liquid
to be raised does not pass through the pump body or bodies, thus rendering such
pumps specially applicable for pumping acids, for ships' pumps, for raising water to
elevated situations, for raising water from mines, and for drawing off the water
when sinking shafts or boring tunnels.
In carrying out my Invention I employ a number of receivers, placed one above
the other, and connected together by an ascension pipe, the ascension pipe of the
lower receiver dipping into the water or other liquid to be raised, each of the said
pipes connecting the receivers being provided with a valve, opening upwards.
Two air or suction pipes are provided, each being connected with each alternate
receiver, the said pipes opening into a suitable chamber, provided with a suitable
slide valve, in such a manner that the air may be exhausted and re-introduced
alternately from and into the said air or suction pipes. The said suction pipes are
provided with stop-cocks for opening communication with the said receivers, and

page_text: are used only when starting the pump. The chamber of the suction or air pipes
is in communication under the slide valve with a vacuum pump, and above the said
slide valve may be in communication with the open air or with compressed air.
When compressed air is employed the said receivers are placed at longer distances
apart, according to the pressure of the air.
Motion may be communicated to the air pump by means of a windmill or other
suitable motive power.
After the pump has been set in operation the alternate motion of the slide valve
will be produced automatically, by a small portion of water passing alternately into
two small receivers connected with the slide valve and the two upper receivers
respectively, and the water or other liquid will be raised alternately into the
receivers connected with the two air or suction pipes respectively, and may be
discharged from the upper receiver in any suitable manner
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Louis Legendre in the Great Seal Patent Office on the 29th June
1878.
LOUIS LEGENDRE, of Kennington, in the County of Surrey, Engineer. " IM-
PROVEMENTS IN PUMPS OR APPARATUS FOR RAISING WATER AND OTHER LIQUIDS
TO ANY HEIGHT BY SUCTION, OR BY SUCTION AND COMPRESSED AIR, AND WITHOUT
THE LIQUIDS PASSING THROUGH THE PUMPS."
This Invention relates to pumps or apparatus for raising water or other liquids
to any desired height or from any desired depth, either by means of suction.alone
or combined with compressed air, in such a manner that the water or other liquid
to be raised does not pass through the pump body or bodies, thus rendering such
pumps specially applicable for pumping acids, for ships' pumps, for raising water to
elevated situations, for raising water from mines, and for drawing off the water
when sinking shafts or boring tunnels.
In carrying out my Invention I employ a number of receivers or tanks, placed
one above the other, and connected together by ascension pipes, the ascension
pipe of the lower receiver dipping into the water or other liquid to be raised, each
of the said pipes connecting the receivers being provided with a valve, opening
upwards.
Two air pipes are provided, each being connected with each alternate receiver;
the said pipes opening into a suitable chamber, provided with a suitable slide valve,
in such a manner that the air may be exhausted and re-introduced alternately from
and into the said air pipes. The said air pipes are provided with stop-cocks for
opening communication with the said receivers, and are used only when starting
the pumps. The chamber of the air pipes is in communication under the slide
valve with a vacuum pump, and above the said slide valve may be in communi-
cation with the open air or with compressed air. When compressed air is employed

page_text: the said receivers are placed at longer distances apart, according to the pressure of
the air.
Motion may be communicated to the air pump by means of a windmill or other
suitable motive power.
After the pump has been set in operation the alternate motion of the slide valve
will be produced automatically by a small portion of water passing alternately into
two small receivers, connected with the slide valve and the two upper receivers
respectively, and the water or other liquid will be raised alternately into the
receivers connected with the two air pipes respectively; and may be discharged from
the upper receiver in any suitable manner.
But to make my Invention better understood, I will proceed to describe the same
by reference to the accompanying Drawing, which shews a sectional elevation of a
my Invention.
pump or apparatus suitable for raising water according to
In the Drawing only five receivers or tanks are shewn, but it will be of course
understood that this number may be increased according to circumstances.
A, A1, A2, A3, and A* are the receivers or tanks placed one above the other;
B, B, B, B, B¹, the ascension pipes connecting the receivers together, as shewn, that
is to say, passing from the bottom of one receiver to the top of the next receiver
above, the lower ascension pipe B¹ dipping into the water or other liquid C to be
raised; the said pipe B¹ being provided with a perforated box D at the lower end
to prevent the entrance of stones or other solid bodies; each of the ascension pipes
is provided with a valve E, opening upwards only, so as to prevent the return of
the water or other liquid; F and G are air pipes, each passing from the slide
valve H; the right-hand side air pipe F is connected with the tanks A¹ and A³ and
the small tank I, and the left-hand side pipe G, with the tanks A, A³, A, A, and
small tank J; K, K¹, are stop-cocks in the air pipes F, G, such stop-cocks only
being used for starting the pump; L, L', are india-rubber pipes connecting the
tanks I and J with the air pipes F and G; H is a suitable slide valve having a
suction pipe M, which may be of any length; also an atmospheric air or compressed
air pipe N, which may also be of any length.
The action of the pump or apparatus
as follows:-In starting the pump all the
cocks K, K¹, being closed vacuum is made in the pipe M, and the slide valve H is
placed in the position No. 1, the cock of the receiver or tank A is opened, and the
water from C will be raised by the suction in the pipe G into the first receiver or
tank A; the workman by means of a cord attached to the small tank J then shifts
the slide valve H into position No. 2, and the cock of the receiver or tank A' is
opened, thus exhausting the air from the pipe F and causing it to descend through
the pipe G, so that the water from the receiver A will be raised into the receiver
or tank A'; the slide valve must then be shifted back to position No. 1 by pulling
down the sinall tank J. The cock of the receiver or tank A² must then be opened
and water will be drawn into the receivers or tanks A and A2, and the slide
valve H must be shifted into position No. 2 again. The cock of the next receiver
or tank A³ must now be opened and the water will be drawn into the receivers or
tanks A' and A3, and also into the small receiver or tank I of the pipe F, which
The cock of the
coming down will bring the slide valve H into position No. 1.
last or upper receiver or tank A* must now be opened, and the water will be
attracted into the receivers A, A, and A', and also into the small receiver or tank J
of the pipe G, which coming down will bring the slide valve H into position No. 2,
and the water will be attracted into A³ and A¹ (and be discharged at the same time
by the valve O), and also into the small receiver or tank I, pipe F, which coming
down will bring the slide valve H into position No. 1, whereby the receivers A, A²
and A, will be again filled up, and so on, acting alternately by the pipes F and G.
It will thus be seen that the water rises alternately through the receivers A, A³,
and A, and A', and A³.
When compressed air is employed the receivers or tanks are placed further apart,
according to the amount of pressure.
Having thus described my said Invention, and the manner of performing the

page_text: same, I wish it to be understood that I do not confine myself to the precise details
herein laid down, as the same may be varied without departing from the peculiar
character of the Invention, but what I claim is,―
Firstly. The method herein described of raising water and other liquids to any
height by suction, or by suction and compressed air, and without the liquid passing
through the pump, properly so called.
Secondly. The general arrangement and construction of pump or apparatus for
raising water or other liquids, operating substantially as herein-before described,
and represented in the accompanying Drawing.
In witness whereof, I, the said Louis Legendre, have hereunto set my hand
and seal, this Twenty-eighth day of June, in the year of our Lord One
thousand eight hundred and seventy-eight.
L. LEGENDRE. (L.S.)