IMPROVEMENTS IN ROTARY ENGINES
Year: 1884

page_text: I, JOHN SANT of 1 Marsh street, Newcastle under Lyme in the County of
Staffordshire do hereby declare the nature of my invention for "IMPROVEMENTS IN
ROTARY ENGINES" to be as follows:-
To simplify the construction of, and increase the efficiency of such. Rotary.
Engines, I construct same, with the case, or shell of Engine of a drum shape: the
cylinder being of an oblong form with semi-circular ends: a piston is fitted inside
cylinder, with suitable packing around the edges to make it steam-tight, and
permanently fastened on the edge of a disc, the said disc, being keyed on to a shaft,
passing through the centre of the body of casing. The disc is fitted with packing.
rings held in their place by springs, fitted within groove in the end of cylinder.
cover forming the centre of body, or case of Engine.
.
To admit the steam to the Engine, a valve box, is fitted to top of cylinder, with
sliding or other valve, so arranged that the steam is cut off, when the piston makes:
about three quarters of a revolution, the other quarter, being worked expansively,
the steam then passing out through exhaust port, on the opposite side to inlet.
Dated this 14th day of March 1884

page_text: JOHN SANT Marsh Street Newcastle under Lyme in the County. of Stafford
Mechanic do hereby declare the nature of my invention for AN IMPROVEMENT IN
ROTARY STEAM ENGINES, and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement
reference being had to the sheet of Drawings making part of this Specification
and to the letters and figures marked thereon.
ROTARY STEAM ENGINES_ and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement
reference being had to the sheet of Drawings making part of this Specification
and to the letters and figures marked thereon.
DESCRIPTION OF DRAWINGS.
Figure 1 is a plan of Rotary Steam Engine according to this invention.
Figure 2 is an End View of Figure 1 at A.A.,
Figure 3 is a Sectional View of Figure 1 at B B.
Figure 4 is a Sectional View of Figure 1 at C C.
Figure 5 is a Side Elevation of Figure 1.
Upon reference to Figures 1, 2, 3, 4 and 5 it will be seen that this Invention
consists of a Drum shaped shell or Case "a," within which an annular Cylinder "b,"
of an oblong form with semi-circular ends truly bored and turned, in which is fitted
Piston "c," with suitable packing around the edges to make.it steam tight, and
permanently fastened on the edge of Disc "d," which Disc is keyed on to Shaft "e,"
which passes through the shell or case "a". The Disc "d," is fitted with packing
rings held in their place by springs fitted in grooves in the end of Cylinder cover
forming, the Centre of Shell or Case "a."
k
"
The Steam is admitted to Cylinder by Valve "f" in Valve box "g," Spindle "h,"
Crosshead "," Spring connecting rods "j," Cams "," working on shaft "e;" in
addition an ordinary Cut off valve may be placed on Steam feed pipe at "," the
valves being so arranged that the steam is cut off when the Piston makes about
three quarters of a revolution, the other quarter being worked expansively the
steam then passing out through exhaust port "m."
There is a Flywheel "," attached to Shaft "e."
The whole is fixed on proper Bed plates. One or more pistons may be applied to
the same Disc.
Although I have described my Invention as a Rotary Steam Engine it may also
be applied as a Compressed Air, Gas or Hydraulic Engine.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim.is;"
First. In a Rotary Engine the particular form of Shell or case and Cylinder.
Second. The Arrangement and construction of. Piston and Disc attachment.
Third The Arrangement of Valve with Cams and Spring Connecting Rods.
Fourth. The Arrangement and construction of a Rotary Steam Engine as
herein described and shewn in reference to Figures 1 to 5, inclusive, of the
Drawings hereto annexed..
In Witness whereof I the said John Sant have hereunto set my hand and seal
this Fifteenth day of November One thousand Eight hundred and Eighty
four.