IMPROVEMENTS IN VALVES PROVISIONAL SPECIFICATION left by the said Samuel Fielding
Year: 1862

page_text: LETTERS PATENT to Samuel Fielding, Samuel Fielding, the younger,
Robert Fielding, and Thomas Fielding, all of Smallbridge, near Rochdale,
in the County of Lancaster, for the Invention of "IMPROVEMENTS IN VALVES
PROVISIONAL SPECIFICATION left by the said Samuel Fielding," Samuel
Fielding, the younger, Robert Fielding, and Thomas Fielding, at the
Office of the Commissioners of Patents, with their Petition, on the 4th
April 1862.
We, SAMUEL FIELDING, SAMUEL FIELDING, the younger, ROBERT FIELDING,
and THOMAS FIELDING, all of Smallbridge, near Rochdale, in the County of
Lancaster, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN VALVES AND IN APPARATUS FOR LUBRICATING THE SAME AND OTHER PARTS
OF STEAM ENGINES," to be as follows:-
The valves of steam engines as at present constructed are worked by a
reciprocating motion derived from an eccentric on the main or driving shaft;
but this Invention consists in a new arrangement of valve which is actuated by
a rotary movement derived from the main shaft by means of toothed gearing.
In a circular chamber or casing, formed in two parts and bolted together,
an opening is formed to receive the steam pipe from the boiler. This chamber
at one side is furnished with four concentric, slots or openings, the outer two
of which are the feed openings to the communication with the cylinder, and
the inner two are the openings to the exhaust pipe.

page_text: Inside the chamber are two discs fixed to a shaft passing through their centre,.
and working in bearings at each side of the chamber, the shaft receiving a
rotary motion from the main shaft of the engine. The space between the
discs receives the steam from the boilers; one of the discs is perfect and rotates
against one side of the chamber, the other disc, which rotates against the.
slotted side of the chamber, has an opening at its periphery which corresponds
with the form of the two outer slots of the chamber, and allows of the passage
of steam to each of them by its revolution. On the side of this latter disc,
which is next the steam chamber, a recess is formed of such shape that it
shall receive exhaust steam from the cylinder, and through one outer slot of
the chamber and convey it to the inner slots thereof to the exhaust pipe, while
the opening in the periphery of the disc is passing steam into the cylinder
through the other outer slot of the chamber.... Thus it is evident that each
revolution of the discs will afford a supply of steam above and below the
piston, and likewise relieve the same of the exhaust steam.
To lubricate the valve a closed cup or vessel receives through its cover a
plunger working in a pump cylinder having at its lower part a valve of a force
pump. The cylinder dips into the oil or other lubricating matter between the
plunger and the valve; an opening in the cylinder communicates with a pipe
conveying the lubricating material to the valve or other part of the engine.
The plunger receives motion by means of a rocking lever actuated by a
tappet on the main shaft of the engine, the lever works on a fulcrum beyond
the plunger and is extended to receive a counterweight. The
The cup is supplied
with lubricating material by means of an opening in the cover, furnished with
a cap or plug screwed thereon.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Samuel Fielding, Samuel Fielding, the younger,. Robert
Fielding, and Thomas Fielding, in the. Great Seal Patent Office on the
4th October 1862.
TO ALL TO WHOM THESE PRESENTS' SHALL COME, we, SAMUEL 3
FIELDING, SAMUEL FIELDING, the younger, ROBERT FIELDING, and THOMAS
FIELDING, all of Smallbridge, near Rochdale, in the County of Lancaster, send
greeting.
WHEREAS Her. most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of April, in the year of our Lord 8
One thousand eight hundred and sixty-two, in the twenty-fifth year of

page_text: Her reign, did, for Herself, Her heirs and successors, give and grant
unto us, the said Samuel Fielding, Samuel Fielding, the younger, Robert
Fielding, and Thomas Fielding, Her special licence that we, the said Samuel
Fielding, Samuel Fielding, the younger, Robert Fielding, and Thomas
Fielding, our executors, administrators, and assigns, or such other as we, the
said Samuel Fielding, Samuel Fielding, the younger, Robert Fielding, and
Thomas Fielding, our executors, administrators, and assigns, should at any
timé agree, with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN VALVES AND IN APPARATUS FOR LUBRICATING THE SAME AND OTHER PARTS OF
STEAM ENGINES, upon the condition (amongst others) that we, the said. Samuel
Fielding, Samuel Fielding, the younger, Robert Fielding, and Thomas Fielding,
our executors or administrators, by an instrument in writing under our, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was: to be performed, and cause the same to be filed in the Great. Seal
Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
:
: NOW: KNOW YE, that we, the said Samuel Fielding, Samuel. Fielding,
the younger, Robert Fielding, and Thomas Fielding, do, hereby declare, the
nature of our said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
:: The, valves of steam engines as at present constructed are generally worked
by, a reciprocating motion derived from an excentric on the main or driving
shaft, but this Invention consists in a new arrangement of valve, which, is
actuated by a rotary movement derived from the main shaft; by means of
toothed gearing or by any other mechanical contrivance.
We now proceed to describe the best means we are acquainted with for
carrying, this part of our Invention into practical effect, reference being had to
the illustrative, Drawings hereunto annexed.
In a circular chamber or; casing formed in two parts and bolted together an
opening is formed to receive the steam pipe from the boiler. This chamber at
one side is furnished with four concentric slots or openings to the communi-
cation with the cylinder, and the inner two are the openings, to the exhaust
ninal

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is an elevation of the valve; Fig. 2, a plan view of the under part;
Fig. 3, a view of the shaft & discs; Fig. 4, a' plan view of the lower disc; and
Fig. 5, a section through' the centre of the apparatus: Fig. 1. Similar letters
denoting corresponding parts in.each Figure respectively..."
. Inside the chamber are two discs a and b fixed to a shaft c, passing through
their centre and working in bearings at each side of the chamber, the shaft
receiving a rotary or other motion from the main shaft, or any other con-
venient working part of the engine. The space d between the discs at Figs. 3
and 5 receives the steam from the boilers; one of the discs a is perfect and.
-rotates against one side of the chamber; the other disc 6, which rotates against
the slotted side of the chamber, has an opening at or near its periphery,
Fig. 4, which corresponds with the form of the two outer slots f, Fig. 2, of
the chamber, and allows of the passage of steam to each of them by its
motions or revolution: On the side of this latter disc which is next the steam.
chamber a recess or pocket g is formed, of such shape that it shall receive:
exhaust steam from the cylinder and through one outer slot of the chamber,
and convey it to the inner slots h thereof to the exhaust pipe, while the
opening in the periphery of the disc is passing steam into the cylinder through
the other outer slot of the chamber. Thus it is evident that each revolution
or motion of the discs will afford a supply of steam above and below the
This valve may
piston, and likewise relieve the same of the exhaust steam.
be so arranged that it will be only necessary for the shaft and discs to make
one revolution for every two revolutions of the cylinder by having one valve
for each end of the cylinder, this will bring each valve nearer to its work than
it could be if one valve were to serve for both ends of the cylinder, for which
it is equally applicable. Although both the feed and exhaust valves
purpose
may be combined in one apparatus, yet there may be a separate apparatus for
the feed valve and another for the exhaust valve. In addition to the fore-
going there is provided a valve for working the steam expansively, and cutting
it off from the boiler or steam chest at any part of the stroke of the piston.
This is effected as follows:-Either the shaft to which the before-mentioned
discs are attached is hollowed so as to admit of an inner shaft, or by other
means a valve is worked upon and so arranged as to cover the concentric
opening or slot in the lower disc when required; such last-mentioned valve to
be worked and regulated by a governor in the usual manner.
:
The foregoing Invention is also applicable for regulating the supply of
water for waterclosets or turbines.

page_text: To lubricate the valve a closed cup or vessel receives through its cover a
plunger working in a pump cylinder, having at its lower part a valve of a
force pump. The cylinder dips into the oil or other lubricating matter;
between the plunger and the valve an opening in the cylinder communicates
with a pipe conveying the lubricating material to the valve or other part of
the engine. The plunger receives motion by means of a rocking lever
actuated by a tappet on the main shaft of the engine; the lever works on a
fulcrum beyond the plunger, and is extended to receive a counterweight. The
cup is supplied with lubricating material by means of an opening in the cover
furnished with a cap or plug screwed thereon.
Having now described the nature of our said Invention, and the manner in
which the same is to be performed, we would remark, in conclusion, that we
do not limit ourselves to the precise details herein expressed and shewn, as
the same may obviously be varied or modified without in any way departing
from the principles on which our Invention is based, as herein-before stated;
but what we claim and desire to be secured to us by the herein in part recited
Letters Patent are, the "Improvements in Valves and in Apparatus for
Lubricating the same and other Parts of Steam Engines," substantially in
the manner berein specified and partly illustrated by the Drawings hereto
annexed.
In witness whereof, we, the said Samuel Fielding, Samuel Fielding, the
younger, Robert Fielding, and Thomas Fielding, have hereunto set
our hands and seals this First day of October, in the year of our Lord
Oue thousand eight hundred and sixty-two.