IMPROVEMENTS IN THE CONSTRUCTION OF ROTARY STEAM ENGINES AND PUMPS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, GEORGE WESTON, Flat Street, Sheffield, in the County of York, Machinist, do
hereby declare the nature of my invention for IMPROVEMENTS IN THE CONSTRUCTION
OF ROTARY STEAM ENGINES AND PUMPS to be as follows: (and as previously specified
in my patent No 1746, Date July 11th in the year 1861,) I use an outer case and
an inner wheel with shaft passing through. The wheel or inner drum having slots
into which are fitted sliding pieces or pistons, the whole of which I now disclaim,
and in lieu of the grooves, runners and pins upon the pistons previously specified I
substitute two metallic rings, one on each side of the inner wheel. The sides of
the inner wheel are recessed to provide room for the said rings. The inside of the
outer case to be turned to a true circle, the sides to be flat, except near the entrance
and exit of the steam, where a taper groove is cast in each side to allow the steam
to pass freely to both sides of the pistons and so produce an equal pressure when
being projected from or pressed to the centre of the inner wheel. The contreing of
the shaft or spindle in relation to the outer case is so placed that the periphery of
the inner wheel is in contact with the inner surface of the outer case, consequently
when the wheel is revolving the sliding shuttles or pistons are pushed within the
surface of the inner wheel. The two metallic rings I propose using are for the
purpose of transmitting such motion to the sliding pieces on the opposite side and
ejecting them to the inner surface of the outer case. The rings abat or impinge
upon the ends of the pistons pointing to the centre and form an inner circle
corresponding to or parallel with the inner surface of the outer case, such metallic
rings are made a little larger in diameter than the circle described by the ends of
the sliding pistons, the ends of the rings are left loose and cut in a slanting direction
thus becoming a spring and pressing the slides in contact with the inner side of the
outer case.

page_text: I, GEORGE WESTON, of 65 Charles Street (late of 19 Flat Street), Sheffield, in
the County of York, Machinist, do hereby declare the nature of my invention
for IMPROVEMENTS IN THE CONSTRUCTION OF ROTARY STEAM ENGINES AND PUMPS
and in what manner the same is to be performed, to be particularly described
aud ascertained in and by the following statement:-(and as previously specified
in my patent N° 1746, date July 11th, in the year 1861,) I use an outer case and ·
an inner wheel with shaft passing through. The wheel or inner drum having slots
into which are fitted sliding pieces or pistons, the whole of which I now disclaim
and in lieu of the grooves, runners, and pins upon the pistons previously specified I
substitute two metallic rings, one on each side of the inner wheel. The sides of
the inner wheel are recessed to provide room for the said rings. The inside of the
outer case to be turned to a true circle, the sides to be flat except near the entrance
and exit of the steam where a taper groove is cast in each side to allow the steam
to pass freely to both sides of the pistons and so produce an equal pressure when
being projected from or pressed to the centre of the inner wheel, The centreing of
the shaft or spindle in relation to the outer case is so placed that the periphery of
the inner wheel is in contact with the inner surface of the outer case, consequently
when the wheel is revolving the sliding shuttles or pistons are pushed within the
surface of the inuer wheel. The two metallic rings propose using are for the
purpose of transmitting such motion to the sliding pieces on the opposite side and
ejecting them to the inner surface of the outer case. The rings abut or impinge
upon the ends of the pistons pointing to the centre and form an inner circlo
corresponding to or parallel with the inner surface of the outer case, such metallic
rings are made a little larger in diameter than tho circle described by the ends of
the sliding pistons, the ends of the rings are left loose and cut in a slanting direction,
thus becoming a spring and pressing the slides in contact with the inner side of the
outer case.
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 :-
1, the application of two metallic rings (acting as springs) for the purpose of
cjecting tho slides, pistons, or shuttles from the centre.
2, the recessing of the sides of the inner wheel to provide room for the said rings.
3, having grooves cast in the inner sides of the outer case to produco an equal
pressure on both sides of moving pistons.
Dated this 17th day of November 1884.