IMPROVEMENTS IN PUMPS CHIEFLY INTENDED FOR ACIDS AND OTHER. CORROSIVE. LIQUIDS
Year: 1874

page_text: LETTERS PATENT to Thomas Suffield, of the Manor Works, East Lane,
Bermondsey, in the County of Surrey, Engineer, Brassfounder, and
Coppersmith, for the Invention of "IMPROVEMENTS IN PUMPS CHIEFLY
Scaled the 9th October 1874, and dated the 11th April 1874.
PROVISIONAL SPECIFICATION left by the said Thomas Suffield at the
Office of the Commissioners of Patents, with his Petition, on the
11th April 1874.
I, THOMAS SUFFIELD, of the Manor Works, East Lane, Bermondsey,
in the County of Surrey, Engineer, Brassfounder, and Coppersmith, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
PUMPS CHIEFLY INTENDED FOR ACIDS AND OTHER. CORROSIVE. LIQUIDS," to bo as
follows:-
This Invention relates to pumps for the purposes set forth, and
consists in forming the barrel or main chamber of several slabs or strips
of glass, slate, or other non-corrosive material held together by strips,
bands, or other appliances.
}

page_text: The main chamber in which the bucket works is formed rectangular,
oblong, or triangular, and is constructed or built up of slabs or plates of
glass which may be either ordinary plate glass cut to the proper width
or cast in moulds according to the exact shape and size required. These
slabs or plates of glass, polished or not, may be bevelled on the edges, so
that when put together to form the chamber they will mitre and so
retain their position when properly cemented and held together by
suitable stays, bands, or stanchions. Or the plates may be left square
on the edge as from the diamond, and one of such edges ground flat
throughout the length so that it will rest against the next plate, and
thus form the chamber by having cach alternate edge ground, the other
being left rough, and the whole secured by stays or stanchions, which
likewise form the external corner pieces for the plates to be cemented
in, the whole presenting the appearance of an ornamental frame with
glass panels.
The pump head, spout, tail pipe, and other parts usually composed of
brass or cast iron may be constructed of vulcanite, gutta percha, lignum
vitae, or other wood, or of brass or iron, with all the exposed parts
enamelled with glass or otherwise coated with such a composition as
will most effectually resist the action of the liquid which has to pass
through the pump.
The valves may be of india-rubber and also the bucket cup, which
in this instance may be formed simply and cheaply from a piece of sheet
india-rubber, the corners being cut out to the requisite shape, and the
sides turned up, so that when secured. on to the working box the whole
may enter the pump chamber, while the cup thus formed retains its
position both in the upward and downward motion; or this cup may be
moulded in india-rubber or other suitable material, and so made to fit the
pump barrel or chamber, whatever the form may be.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 3
filed by the said Thomas Suffield in the Great Seal Patent Office on.
the 10th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
SUFFIELD, of the Manor Works, East Lane, Bermondsey, in the County
of Surrey, Engineer, Brassfounder, and Coppersmith, send greeting.
3

page_text: .
.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of April, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty.
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Thomas Suffield, Her special licence that
I, the said Thomas Suffield, my executors, administrators, and assigns, or
such others as I, the said Thomas Suffield, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at all times thereafter 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 "IMPROVEMENTS IN PUMPS CHIEFLY INTENDED FOR
ACIDS AND OTHER CORROSIVE LIQUIDS," upon the condition (amongst others)
that I, the said Thomas Suffield, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and
scals, 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 Scal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Thomas Suffield, do hereby declare
the nature of my said Invention, and in what manner the same is to bc
performed, to be particularly described and ascertained in and by the
following statement theroof, that is to say :-
This Invention relates to pumps specially for acids and other corrosivo
liquids, and consists in forming the barrel or main chamber of soveral
slabs or strips of glass, slate, or other non-corrosive material held togother
by strips, bands, or other appliances.
.
The main chamber in which the bucket works is formed rectangular,
oblong, or other similar shape in cross section, and is constructed or
built up of slabs or plates of glass which may be cither ordinary. plato
glass cut to the proper width or cast in moulds according to the exact
shape and size required. These slabs or plates of glass, polished or not,
may be bevilled on the edges so that when put together to form the..
chamber they will mitre and so retain their position when properly..
cemented and held together by suitable stays, bands, or stanchions. Or
the plates may be left square on the edge as from the diamond, and one
of such edges ground flat throughout the length so that it will rest.

page_text: against the next plate, and thus form the chamber by having each alter-
nate edge ground, the other being left rough, and the whole secured by
stays or stanchions, which likewise form the external corner pieces for
the plates to be cemented in, the whole presenting the appearance of an
ornamental frame with glass panels.
The pump head, sprout, tail pipe, and other parts usually composed of
brass or cast iron may be constructed of vulcanite, gutta percha, lignum
vitæ, or other wood, or of brass or iron, with all the exposed parts
enamelled with glass or otherwise coated with such a composition as will
most effectually resist the action of the liquid which has to pass through
the pump.
:
The valves may be of india-rubber and also the bucket cup, which
in this instance may be formed simply and cheaply from a piece of sheet
india-rubber, the corners being cut out to the requisite shape, and the
sides turned up, so that when secured on to the working box the whole
may enter the pump chamber, while the cup thus formed retains its
position both in the upward and downward motion; or this cup may bo
moulded in india-rubber or other suitable material, and so made to fit
the pump barrel or chamber, whatever the form may be.
The Invention will be well understood by reference to the accompanying
Drawings and to the following detailed description thereof:-"
Figure 1 is a side view partly in section, Figure 2, a plan, and
Figure 3 a transverse. section of a single barrel pump of square form,
with separate sheets of slate, earthenware (glazed), or plates of glass A, A,
fitted to form the four sides, the side edges being held in place by 2
vertical corner ribs B, B, rods C, C, with threaded ends passing through:
the ribs to bind them, and also the tail pipe D and the pump head E in
position. The edges of the plates A, A, are here shown with bevilled
meeting edges, one or both of which may be "ground to fit," or a cement,
say of liquid rubber; can be spread upon them previous to the ribs being 8
arranged to make the edge joints liquid tight.
The plunger or bucket of, this pump. is of corresponding shape as in
Figures 4 and 5, where it is shown in cross section and in plan respec-
tively, the plunger frame F being of metal and the frictional part G, .
which bears against the inner walls of the pump barrel, of rubber: 3
or a compound capable of resisting the corrosive action of acid. The:

page_text: frictional body is here shown as a sheet with a central hole for the
passage of the liquid, and with the outside corners cut away so that four
side portions are formed that can be turned up to act as broad bearing
surfaces against, the glass, the angles of the corner edges being so
arranged that when the sides are turned up a meeting of the edges takes
place, and a perfect liquid joint in the corners of the barrel is obtained.
The clack or valve proper can be hinged to the inner portion of the
plunger frame, or a spring flap or plug can be arranged, in which case,
it could ride up and down a continuation of the plunger rod to be affixed.
to the cross strap H.
The tail pipe is shown circular, but it may be of any other shape, or
be formed to correspond with the barrel portion, as desired.
Instead of the meeting edges of the barrel sheets or plates being
bevilled or mitred they may have alternately grooves and projections, as
in Figures 6 and 7, or they may be arranged edge on, as in Figure 8, in
which case, particularly when cement is used in the joints, no grinding
or preparing would be necessary as would in most cases be compulsory
when one sheet is morticed into the other.
The shape of the barrel in cross section can be varied by increasing
the number of plates A, A.; for example, I have shown in Figure 9 a
barrel of hexagon shape, and in Figure 10 one of octagon shape, tho
meeting edges of the plates in both being bevilled only.
Any number of my improved barrels can be arranged in proximity or to
the same framing. In Figures 11, 12, and 13 I have shown three barrels
in the same frame, so that their respective plungers can be operated by,
say, a three-throw crank fitted on the pump head. The slate, earthen-
ware, or the glass slabs, as the case may be, are in these Figures shown
as edge on, the middle slabs as partitions being capable of action on both
faces by the plungers.
In most cases this plan will be found to answer the treble plunger
system, but separate slabs as partitions can be employed as in Figures 14,
15, and 16, in which case I propose to arrange a panel of wood L between
each pair of them, through which horizontal bolts J, J, can be arranged
to draw the slabs into close contact, the bolt ends passing to the outside
of separate ribs K, K, as shown, where nuts can retain the ribs in
position.

page_text: Witness,
H. GARDNER,
166, Fleet Street,
London.
THOMAS SUFFIELD. (L.S.)