An Improved Rotary Engine, Adaptable for Use as a Pump, Blower, or Motor.
Year: 1888

page_text: Date of Application, 24th May, 1888
Complete Specification Left, 25th Feb., 1889
Complete Specification Accepted, 11th May, 1889
An Improved Rotary Engine, Adaptable for Use as a Pump, Blower,
or Motor.
We, JOSEPH ARMYTAGE WADE, Timber Merchant, and JOHN CHERRY, Mechanical
Engineer, both of Hornsea, in the East Riding of the County of York, do hereby
declare the nature of this invention to be as follows:―
This invention relates to engines of the rotary class and which are capable of
being adapted for use as motors or as pumps for lifting or forcing fluids, or as
blowers and the like. Our object is to provide an engine suitable for the above
purposes and having few working parts; these being strong and not readily liable to
derangement.
When arranged as a pump, our improved rotary engine consists of two cylindrical
bodies or druins, each formed or furnished as to its periphery with alternate grooves
and ridges, the grooves and ridges of the one drum gearing with the ridges and
grooves of the other; uniform rotation of the two drums in opposite directions being
thus ensured. Each drum is mounted on a shaft carried in bearings arranged in a
casing adapted to enclose both drums; and these shafts may, if preferred, be con-
nected together by supplementary gear wheels placed externally to the casing. The
motive power for driving the pump may he derived from a belt acting on a pulley
keyed to one of the shafts or from an engine coupled directly thereto. The suction
and discharge orifices may be arranged opposite one another in the central portion of
the casing.
Each of the grooves in the peripheries of the drums may be
so formed as to correspond with that of a straight or of a curved line laid,
by preference diagonally, upon the circumferential surface of each drum, or
each groove may follow a V-shaped course. In cross section, the grooves and
ridges may be bounde either by straight or curved lines or by a combination of
such lines.
The action of the apparatus is as follows:-During the revolution of the drums,
water or other liquid from the suction pipe flows into such of the grooves in the
peripheries of the drums as are successively presented towards the suction. The

page_text: liquid, being confined in each of these grooves by the casing, is carried round until
it arrives in the portion of the casing which is open to the discharge pipe, where
the liquid is displaced by the corresponding ridge of the fellow drum. If spirally-
arranged grooves be employed, the process of displacement is gradual from end to end
of the groove and the delivery practically constant.
An engine of the type above described may be employed as an air-pump or blower.
It may also be adapted to serve as a motor for supplying power by adding the
necessary fittings for the admission, escape and control of steam or other fluid under
pressure.
000
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C.,
Agent for the Applicants.

page_text: An Improved Rotary Engine, Adaptable for Use as a Pump, Blower,
or Motor.
We, JOSEPH ARMYTAGE WADE, Timber Merchant, and JOHN CHERRY, Mechanical
Engineer, both of Hornsea, in the East Riding of the County of York, do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
This invention relates to engines of the rotary class and which are capable of
being adapted for use as motors, or as pumps for lifting or forcing fluids, or as
blowers and the like.
Our object is to provide an engine suitable for the above
purposes and having few working parts; these being strong and not readily liable
to derangement.
In the accompanying drawings, Fig. 1 represents in side and Fig. 2 in front
elevation a rotary engine constructed according to this invention and arranged as a
pump; Figs. 3 and 4 being respectively vertical and horizontal sections through the
casing, shewing the internal drums in elevation and in plan. Fig. 5 is a view of the
upper side of the bed-plate.
Our improved rotary engine consists of two cylindrical bodies or drums A A³,
each formed or furnished as to its periphery with alternate grooves a and ridges a¹,
the grooves and ridges of the one drum gearing with the ridges and grooves of
the other; uniform rotation of the two drums in opposite directions being thus
ensured. Each drum is mounted on a shaft B or B₁ carried in bearings arranged in
a casing C adapted to enclose both drums; and these shafts may, if preferred, be con-
nected together by supplementary gear-wheels placed externally to the casing. The
motive power for driving the pump may be derived from a belt acting on a pulley D
keyed to one of the shafts B or B', or from an engine coupled directly thereto. The
suction and discharge orifices E and E may be arranged opposite one another in
the central portion of the casing C. Each of the grooves a may be so formed as to
correspond with that of a straight or of a curved line laid by preference diagonally
upon the circumferential surface of each drum, or each groove may follow a V-shaped
course. In Fig. 4, the grooves a correspond with lines laid diagonally or spirally on
the circumferential surfaces of the drums. In cross section, the grooves a and
ridges a' may be bounded either by straight or curved lines; or, by a combination of
such lines, as shewn in Fig. 3.
The action of the apparatus is as follows:-During the revolution of the
drums A A', water or other liquid from the suction-pipe E flows into such of
the grooves a in the peripheries of the drums as are successively presented towards
the suction. The liquid, being confined in each of these grooves by the casing C,
is carried round until it arrives in the portion c of the said casing which is open
to the discharge pipe E, where the liquid is displaced by the corresponding ridge a¹
of the fellow drum. If spirally-arranged grooves be employed, as shown in the
drawings, the process of displacement is gradual from end to end of each groove and
the delivery practically constant.

page_text: An engine of the type above described may be employed as an air-pump or blower
It may also be adapted to serve as a motor for supplying power by adding the
necessary fittings for the admission, escape and control of steam or other fluid under
pressure.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, we claim
1. The improved construction of rotary engine adaptable for use as a pump, blower
or motor, arranged and operating substantially as set forth.
2. The improved rotary engine capable of adaptation for use as a pump, blower or
motor, and comprising a pair of spirally-ridged and grooved drums enclosed within a
casing and rotating in unison, the ridges and grooves of one drum engaging with the
grooves and ridges of the other drum, so that (when the apparatus is employed
as a pump) fluid received in each groove from the supply pipe is displaced
by the corresponding ridge and discharged to the delivery pipe, substantially as herein
described.