Improvements in Gas Service and Fittings Cleansers.
Year: 1888

page_text: Date of Application, 19th Dec., 1888
Complete Specification Left, 17th Sept., 1889-Accepted, 19th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Gas Service and Fittings Cleansers.
We WILLIAM FIDDES and WILLIAM STAGG, both of the Gas Works, Bristol, in
the County of Gloucester, Civil Engineers, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object the construction of air force pumps, especially
adapted for the cleansing of gas service pipes and fittings, in a more simple and
inexpensive manner than those hitherto made for such purposes.
In order to carry out this invention, I take a tube or barrel of about a foot, more or
less long, and to it I fit a plunger or piston consisting of two metallic plates with the
upper and inner edge of a cup leather inserted between them so that the sides turned
down of the cup may press against the inside of the barrel. This piston has attached
to it a rod that passes through a central hole formed in a cap or guide screwed to the
top of the barrel, the upper extremity of the rod being furnished with a cross handle.
The lower part of the barrel has a male thread cut upon it and screws into a flanged
fitting or valve box having a female thread. This fitting is open to the barrel at top
and to the receiver below, and has a bridge piece or guide fixed about midway to the
interior of it. At the lower part of the valve box or fitting there is a recess into
which an india rubber ring is inserted, the ring being kept in its place, by an annular
screwed cap. or not as may be found necessary. This ring forms a valve seat against
which a dished and well tinned metal valve having a stem impinges. The valve stem
passes through the bridge piece and is furnished with a nut at top, a spiral spring
being interposed between the bridge piece and the nut. The valve is thus when at
rest kept close against its seat. The valve box has on a part of its outside a male
thread and is screwed into a hollow, globular or other suitably shaped metal receiver,
furnished with a close fitting stop cock, to the nozzle of which a suitable connection
is attached when to be used. The bottom of the receiver has bolted, or otherwise
fastened to it a foot piece upon which the feet of the operator are placed when
charging the receiver.
The form of the valve may be varied and may consist of a disc, ball or plug,
acting against a flexible seating, or of a flexible disc, ball or plug, acting against a
flexible or inflexible seating, or it may consist of a cup leather.
The mode of charging the receiver is that commonly adopted. On drawing up the
handle air passes by the sides of the cup leather piston, and enters the barrel, and on
forcing down the handle the air contained in the barrel presses against the inside of
the cup leather so that the said air cannot escape by the way it entered, consequently
the air is forced against the valve which it opens, and enters the receiver. When this
motion is complete the spring closes the valve and keeps it so until again opened by
the force of air caused by the downward movement of the piston. By repeating the
drawing and thrusting of the piston the receiver soon becomes charged and is ready
for attachınent to any service or fitting which may require its application.
Dated this 19th day of December 1888.
W. H. BENNETT,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Gas Service and Fittings Cleansers.
We WILLIAM FIDDES of the Gas Works, Bristol, in the County of Gloucester, Civil
Engineer, and WILLIAM STAGG of 52 Seymour Road, Bristol, in the County of
Gloucester, Gas Engineer, do hereby declare the nature of this invention and in
[Price 6d.1

page_text: what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention has for its object the construction of air force pumps, especially
adapted for the cleansing of gas service pipes and fittings, in a more simple and
inexpensive manner than those hitherto made for such purposes.
In order that the invention may be easily understood drawings are attached hereto,
Fig. 1 being an elevation of the apparatus, Fig. 2 is a sectional elevation of Fig. 1
taken at right angles to it, the valve stem, spring and nut being in elevation, and
Fig. 3 is also a sectional elevation of part of the apparatus, as shown in Fig. 2, but
drawn to a larger scale in order to allow of the details being shown more distinctly.
In order to carry out this invention, we take a tube or harrel A of about a foot,
more or less, long, and to it we fit a plunger or piston consisting of two metallic
plates B and C with the upper and inner edge of a cup leather D inserted between
them so that the sides turned down of the cup may press against the inside of the
barrel. This piston has attached to it a rod E that passes through a central hole
formed in a cap or guide F, screwed to the top of the barrel, the upper extremity of
the rod being furnished with a cross handle G. The lower part of the barrel has a
male thread H cut upon it and screws into a flanged fitting or valve box I having a
female thread at V. This fitting is open to the barrel at top and to the receiver
below, and has a bridge piece or guide J fixed a little below midway to the interior
of it. At the lower part of the valve box or fitting I there is a recess into which an
india rubber ring K is inserted, the ring being kept in its place by an annular
screwed cap L, or not, as may be found necessary. This ring forms a valve seat
against which a dished and well tinned metal valve M having a stem N impinges.
The valve stem N passes through the bridge piece and is furnished with a nut O at
top, a spiral spring P being interposed between the bridge piece and the nut.
valve is thus when at rest kept close against its seat. The valve box has on a part of
its outside a male thread Q, and is screwed into a hollow globular or other suitably
shaped metal receiver R, furnished with a close fitting stop cock S, to the nozzle
of which a suitable connection T is attached when used. The bottom of the receiver
has bolted, or otherwise fastened to it a foot piece U upon which the feet of the
operator are placed when charging the receiver.
The
The form of the valve may be varied and may consist of a disc, ball or plug acting
against a flexible seating, or of a flexible disc, ball, or plug acting against a flexible
or inflexible seating, or it may consist of a cup leather.
The mode of charging the receiver is that commonly adopted. On drawing up the
handle air passes by the sides of the cup leather piston and enters the barrel, and on
forcing down the handle the air contained in the barrel presses against the inside of
the cup leather so that the said air cannot escape by the way it entered, consequently
the air is forced against the valve which it opens, and enters the receiver. When this
motion is complete the spring closes the valve and keeps it so until again opened by
the force of air caused by another downward movement of the piston. By repeating
the drawing and thrusting of the piston the receiver soon becomes charged and is
ready for attachment to any service, or fitting which may require its application.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is,
The construction of gas service and fittings cleansers as herein described and shown
on the drawings.