IMPROVED ROTARY ENGINE OR PUMP." 16
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by the said Samuel Mellor at the Office
of the Commissioners of Patents on the 30th March 1880.
SAMUEL MELLOR, of 21, Bermuda Street, Jamaica Street, Stepucy.
IMPROVED ROTARY ENGINE OR PUMP."
16 'AN
This Invention relates to improvements in rotary engines, and consists of a fixed
cylinder which may be bolted to a sole plate or other suitable foundation.
The cylinder has within it a pendulous tongue, the centre from which the latter
vibrates being placed somewhat outside the radius of the cylinder's bore.
The pendulous tongue passes by means of a slot through a circular block which
acts as a sort of piston, and the said block is provided with a circular stem which
takes into a recess in a concentrically revolving disc which works in contact with
the cylinder cover, or the stem on the circular block may tako into a square or
oblong piece let into the revolving disc and arranged with end play so that the
circular block may be kept in contact with the bore of the cylinder as the disc
revolves.
The disc is fitted to the end of a shaft which passes through a stuffing box on the
cylinder end or cover, by which shaft the power of the engine may be utilized; a
disc and shaft may be fitted at each end of the cylinder.
Passages governed by valves when necessary are provided in the cylinder for the
inlet and outlet of the steam or other source of power, or they may be formed in the
pendulous tongue, the circular block as it slides upon it then regulating the ingross
and egress of the steam.
The action of the engine is as follows:-On steam being admitted it presses on
the circular block and vibrating tongue, the block slides on the tongue, and the
stem in the former which takes into the disc causes the latter, and with it the
shaft, to revolve, the block sliding up and down the pendulous tongue, and the latter
vibrating to and fro during each revolution of the disc.
.It is obvious that if the shaft be rotated by any ordinary motive power the
engine may be arranged to work as a pump.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Samuel Mellor in the Great Seal Patent Office on the 30th September
1880.
SAMUEL MELLOR, of 21, Bermuda Street, Jamaica Street, Stepney.
IMPROVED ROTARY ENGINE OR PUMP."
<< AN
This Invention relates to improvements in rotary enginės and pumps, and is
clearly illustrated in the annexed Drawings.
Figure 1 is a cross section and shews the construction of the apparatus suitable
to work either as an engine or as a pump, whilst Figure 2 is a longitudinal section
of the same. It consists of a fixed cylinder a bolted to a sole plate b or other
suitable foundation. The cylinder has within it a pendulous tongue c, the centro d
from which the latter vibrates being placed somewhat outside the radius of the
cylinder's, boro.
The pendulous tongue passes by means of a slot e through a circular block f
which acts as a sort of piston, and tho said block is provided with a circular stem y
which takes into a recess in a concentrically revolving disc h which works in
contact with the cylinder cover i.
The disc is fitted to the end of a shaft ; which passes through a stuffing box k
on the cylinder end or cover, by which shaft the power of the engine may be
utilized.
A disc and shaft may be fitted at each end of the cylinder.
Passages l, m, (when necessary, governed by valves actuated by the engine) are
provided in the cylinder, forming the inlet m and outlet 7 of the steam or other
source of power, or they may be forined in the pendulous tongue, the circular block
as it slides upon it then regulating the ingress and egress of the steam or other
fluid. The action of the engine is as follows:-On steam being admitted by tho
passage m it presses on the circular block fand vibrating tongue c, the block slides
on the tongue and the stem g on the former, which takes into tho disc h, causes tho
latter, and with it the shaft j, to revolve, the block sliding up and down the.
pendulous tongue, and the latter vibrating to and fro during each revolution of
the disc.
The shaft is provided with pulloys n, o, to receive straps for the purpose of
driving shafting or other machinery.
When the apparatus is fitted as a pump the pulley n would be a fixture on the
shaft by which it would be driven, and the pulloy o would then run loose on the
shaft, aud the driving strap would be shifted on to it in the well known way
when it was desired to stop the pump.
When the apparatus is used as a pump the passages l, m, that conveyed the
steam to and from the engine will become the suction and delivery pipes of the
pump.
An ordinary valve may be introduced in some part of either the suction or
delivery pipe to prevent the return of the water or other fluid that is being pumped
at the moment when the circular block is passing between the ingress and egress
passages.
This will probably be necessary only when the pump is working against a large
head of water or at a low speed, as in other cases the momentum of the water
will prevent any return of the water when the circular block is passing the centre
between the ports or opening.
And having now described the nature of my said Invention, and in what manner
the same is to be performed, I declare that the essential part of this Invention and

page_text: that which is claimed as novel is, the combination of the pendulous tongue, the
circular block, and disc rotating within the cylindrical chamber, substantially as
described and shown in the annexed Drawings.
In witness whereof, I, the said Samuel Mellor, have hereunto set my hand
and seal, this Thirtieth day of September, One thousand eight hundred
and eighty.
SAMUEL MELLOR. (L.S.)