IMPROVEMENTS IN ROTARY APPARATUS, APPLI- CABLE AS PUMPS, VENTILATORS, AND THE LIKE
Year: 1881

page_text: LETTERS PATENT to Alfred Julius Boult, of the Agencies for Foreign Patent
Solicitors, 323, High Holborn, London, in the County of Middlesex, and
6, Lord Street, Liverpool, in the County of Lancaster, Engineer & Patent
Agent, for an Invention of "IMPROVEMENTS IN ROTARY APPARATUS, APPLI-
CABLE AS PUMPS, VENTILATORS, AND THE LIKE" A communication from
abroad by Lucien Bauzile Villebonnet, of Nancy, Department Meurthe &
Moselle, in the Republic of France.
PROVISIONAL SPECIFICATION left by the said Alfred Julius Boult at the
Office of the Commissioners of Patents on the 22nd October 1881.
ALFRED JULIUS BOULT, of the Agencies for Foreign Patent Solicitors, 323,
High Holborn, London, in the County of Middlesex, and 6, Lord Street,
Liverpool, in the County of Lancaster, Engineer and Patent Agent. "IMPROVE-
MENTS IN ROTARY APPARATUS, APPLICABLE AS PUMPS, VENTILATORS, AND THE
LIKE" A communication from abroad by Lucien Bauzile Villebonnet, of Nancy,
Department Meurthe and Moselle, in the Republic of France.
This Invention relates to improvements in the construction of rotary apparatus,
such as pumps, ventilators, and the like, and said improvements are applicable
even to toys.
I will describe the said Invention as applied to a pump, and any modification
required to adapt the same for other purposes will be readily understood.
A pump embodying the said Invention consists substantially of a cylinder
enclosing two wings mounted on a shaft passing through the said cylinder. Motion
is imparted to these wings by an arrangement consisting of four bars or links,
forming a hinged or jointed quadrilateral (quadrilatire). Two of said links are
somewhat shorter than the other two, and the two short ones forming one pair
are coupled in immediate proximity to the cylinder herein before mentioned, whilst
the two long links are coupled and attached to the periphery of a wheel or pulley
driven by means of a hand crank, belt, or otherwise. Motion may be imparted
to the said wheel by any suitable motive power. If necessary a fly wheel may be
used to steady the motion of the driving wheel.

page_text: The centre of the driving wheel is situated in a line bisecting the angle formed
by the two short links of the quadrilateral, and on the line which connects the
point, in which the two short links meet with the meeting point of the long
links.
The two wings are so placed within the cylinder that they form the same
angle as that formed by the two short links of the quadrilateral, one wing being
fast on the shaft, the other being pivotted thereon.
In the cylinder are provided an inlet and an outlet port for the water or other
liquid, and ports are placed in such a manner that a line connecting the same
divides the space in the cylinder into two unequal parts.
The position of the wings with relation to the periphery of the cylinder is such
that one of the two wings will at all times be between the two ports, so that
whilst the one wing draws the water in the other expells it. It is obvious that the
two wings move with unequal speed for that purpose.
It is preferred to place the outlet port on the top of the cylinder and to make
it tubular, the inlet being preferably rectangular in section, and near, but not at
the bottom, of the cylinder.
It is obvious that instead of applying the driving gear, consisting of the driving
wheel and the quadrilateral to one side of the cylinder only, one such arrangement
may be placed at each side thereof, double purchase being thus obtained.
The whole of the apparatus is mounted on suitable standards.
It is obvious that the size of the cylinder, the angle formed by the links, and
the strength of the several parts of the apparatus will be varied according to
circumstances.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alfred Julius Boult in the Great Seal Patent Office on the
22nd April 1882.
ALFRED JULIUS BOULT, of the Agencies for Foreign Patent Solicitors, 323,
High Holborn, London, in the County of Middlesex, and 6, Lord Street, Liverpool,
in the County of Lancaster, Engineer and Patent Agent. " IMPROVEMENTS IN
ROTARY APPARATUS, APPLICABLE AS PUMPS, VENTILATORS, AND THE LIKE.' A
communication from abroad by Lucien Bauzile Villebonnet, of Nancy, Department
Meurthe and Moselle, in the Republic of France.
"
The following is the Specification as communicated to me by my foreign
correspondent.
This Invention, which is applicable either as a pump or ventilator, consists of a
cylinder enclosing two wings, which are set in motion by a jointed quadrilateral
(quadrilatère), one angle whereof is in close proximity to the cylinder, the opposite
one being at the circumference of a wheel, which may be driven by means of a
crank, and off any motor, such as horse power, steam, hydraulic power, or wind.
Another wheel, which I term the "maintaining wheel," will if required serve to
render the motion of the first one more steady and regular. The quadrilateral
consists of four links, two long and two short, jointed together as shown in the
Drawings.
In the Drawings annexed hereto Figure 1 is a vertical section, Figure 2 is an
end elevation with the handle removed, and Figure 3 a cross section through the
cylinder and wings or diaphragms. In the different views like letters represent
like parts.
a and b are the connecting rods or long links of the quadrilateral; c and d are
the arms which give motion to the wings, and form the short links of the quadri-
Jateral; e and are the wings or diaphragms; g is the shaft which drives one
wing; g is the collar driven by the arm c which gives motion to the other wing;
k and k¹ are arms which are attached respectively to the shaft g and the collar g',
and also to the wings, thus connecting them with their respective arms c and d;
h is the driving wheel, i the maintaining wheel, and legs of the framing which
carry the bearings and cylinder; m is the outlet, and n the inlet for the water or
other fluid.
A and B are joints of the links, which can if preferred bo made forked.
In the section, Figure 1, the crank X is supposed to be at the point X¹, Figure 2,
or nearly at right angles to the position shown in Fig. 2.
The outlet m may be rectangular if preferred.
The Drawings show that the centre of the driving wheel is situated in a line
bisecting the angle formed by the two shorter links of the quadrilateral, and on
the line which connects the point in which these two links are jointed to the
longer ones.
The angle formed by the two wings is the same as that of the two short links of
the quadrilateral; these two links are fixed on the shafts of the wings, and from
the same the latter receive motion. These wings have unequal speed; thus at
every turn of the wheel each wing passes through the short arc and the long arc,
but in such a manner that one of them can enter one arc only when the other
leaves the same, and as the inlets and outlets for the water are each placed at the
point whence one arc springs, it follows that there is always one wing which
separates the apertures and retains the water, whilst the other pushes the latter
and compells it to enter the outlet m. The inlet n is preferably rectangular,

page_text: The cylinder, the angle formed by the wings with one another, and by the
pairs of links of the quadrilateral, may vary in size and strength, et cet., so as to
suit all requirements.
For the larger sizes the gearing should be placed at both ends of the cylinder,
thus affording double purchase; there is however no objection to doing this in
all cases.
This machine can be set either vertically or horizontally. The wings may be
provided with rubber or leather to make the joints tight, and sliding pieces pressed
out with springs if necessary.
Having now described this Invention, as communicated to me by foreign corre-
spondent, and the method of performing the same, I claim,―
The hereinabove illustrated and described construction of a rotary pump or
ventilator, consisting of two wings rotating at varying angular velocities, and
which are driven by link rods off a wheel placed eccentrically to the axis of the
cylinder, so that one wing always separates the inlet from the outlet port, and
neither wing can enter either of the arcs between the ports before the other has
quitted it, substantially as set forth and shown.
In witness whereof, I, the said Alfred Julius Boult, have hereunto set my
hand and seal, this Twenty first day of April, in the year of our Lord One
thousand eight hundred and eighty two.
TOTA
T DATTIM
מתמז
THAT TY
J. BOULT.
(L.S.)