IMPROVEMENTS IN THE MANUFACTURE OF LINED VALVE CASES, COCKS, PUMP BODIES, AND OTHER HOLLOW PIECES INTENDED TO RESIST CHEMICAL ACTION
Year: 1882

page_text: LETTERS PATENT to Henry Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer, for an
Invention of "IMPROVEMENTS IN THE MANUFACTURE OF LINED VALVE
CASES, COCKS, PUMP BODIES, AND OTHER HOLLOW PIECES INTENDED TO
RESIST CHEMICAL ACTION." A communication from abroad by Albert Louis
George Dehne, of Halle on the Saal, in the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Henry Edward Newton
at the Office of the Commissioners of Patents on the 25th February 1882.
HENRY EDWARD NEWTON of the Office for Patents 66 Chancery Lane in the
County of Middlesex, Civil Engineer. "IMPROVEMENTS IN THE MANUFACTURE OF
LINED VALVE CASES, COCKS, PUMP BODIES AND OTHER HOLLOW PIECES INTENDED
TO RESIST CHEMICAL ACTION." [A communication from abroad by Albert Louis
George Dehne, of Halle on the Saal, in the Empire of Germany.]
In order to protect valve cases, cocks bodies for pumps and other hollow pieces
against the influence of chemical action, it is necessary (unless such parts are made
of the appropriate material at the sacrifice of strength) to coat or line such parts,
when made of iron, bronze or even wood, with a protecting covering of lead, tin,
zinc, copper, or an alloy of metals, vulcanized rubber or any suitable substance
which will resist chemical action.
Hitherto it has been usual to cast the valve cases, for example, in halves ot
facilitate the introduction of the lining, and then to bolt or otherwise secure the
parts together.
Now the object of this invention is to coat or line the articles when cast in one
piece. The casing of the valve or pump body, whether of iron, bronze or other
material is so made that cores of the plainest and simplest forms may be readily
introduced and removed from all the hollow spaces which are to be coated or lined.
Thus for instance a valve casing (which in its usual construction contains hollow
spaces the diameters of which exceed the diameters of the outer apertures) is in
A....מ

page_text: the present case simply constructed of two hollow cylinders and into such casing
cores of cast iron may readily be introduced and these together with the casing
will form a mould for casting the lining. Into this mould a lining of lead, tin,
zinc or alloy of metal may be cast so as to form a projecting cover for the iron.
The hollow spaces may readily be lined by caoutchouc or gutta percha in a pasty
condition and after insertion of the solid cores, may be vulcanized in the usual
manner. In like manner a membrane pump, its valve boxes or casings, air vessel,
safety valve and pipes of admission and discharge may according to this invention
be lined with a protecting material while using rigid cores by constructing the
parts named in one undivided piece.
In these constructions the following advantage is attained, namely that the
hollow bodies will always consist of a undivided body into and from which cores
of iron or any other rigid material, may be easily inserted or removed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Edward Newton in the Great Seal Patent Office on the
16th August 1882.
HENRY EDWARD NEWTON of the Office for Patents 66 Chancery Lane in the
County of Middlesex Civil Engineer. "IMPROVEMENTS IN THE MANUFACTURE OF
LINED VALVE CASES, COCKS, PUMP BODIES AND OTHER HOLLOW PIECES INTENDED
TO RESIST CHEMICAL ACTION." A communication from abroad by Albert Louis
George Dehne of Halle on the Saal in the Empire of Gerinany.
In order to protect valve cases, cocks, bodies for pumps and other hollow pieces
against the influence of chemical action it is necessary (unless such parts are made
of the appropriate material at the sacrifice of strength) to coat or line such parts
when made of iron, bronze or even wood, with a protecting covering of lead tin,
zinc, copper, or a suitable alloy of metals, vulcanized rubber or any suitable
substance which will resist chemical action.
Hitherto it has been usual to cast valve cases, for example, in halves, to
facilitate the introduction of the lining and then to bolt or otherwise secure the
parts together.
Now the object of this Invention is to coat or line hollow articles when cast in
one piece.
In the accompanying drawing Fig: 1 shews in sectional elevation and Fig: 2
in plan view partly in section a valve box constructed according to this
Invention.
The casing of the valve whether of iron, bronze, or other material, is so made
that cores of the plainest and simplest forms may be readily introduced and
removed from all the hollow spaces which are to be coated or lined.
Thus, for instance, a valve casing (which in its usual construction contains
hollow spaces the diameters of which exceed the diameters of the outer apertures)
is in the present case simply constructed of two hollow cylinders A B set at right
angles the one to the other. Into the casing thus formed cores of cast iron C D E
may readily be introduced by the openings a, b, c, and these cores together with
the casing, will form a mould for casting the lining d. Into this mould a lining of
lead, tin, zinc, or alloy of metal may be cast so as to form a protecting cover for
the iron or other material of which the casing is formed. The casing may if desired
be lined with caoutchouc or gutta percha or other compound capable of being
vulcanized in a pasty condition, which after the solid cores C D E have been
inserted may be vulcanized in the usual manner. The cover of the valve casing
will also be lined and the valve will be coated in a similar manner to resist
chemical action.
In like manner a membrane pump its valve boxes or casings, air vessel, safety
valve, and pipes of admission and discharge may according to this Invention be
lined with a protecting material, while using rigid cores by constructing the parts
named in one undivided piece. Such a pump is shown in longitudinal section at
Fig: 3. Its construction will be readily understood from the above description
and further reference thereto will therefore be unnecessary.
In these constructions the following advantage is attained, viz, that the hollow
pieces will always consist of an undivided body into and from which cores of iron
or any other rigid material may be easily inserted or removed.
Having now described this Invention of "Improvements in the manufacture of
lined valve cases cocks pump-bodies and other bollow pieces intended to resist
chemical action as communicated to me from abroad and explained the manner
of carrying the same into effect 1 claim.
"

page_text: Constructing lined valve cases and similar hollow pieces so that the diameter of
the hollow spaces therein shall not exceed that of the outer apertures, as and for
the purposes set forth.
In witness whereof I the said Henry Edward Newton have hereunto set
my hand and seal the fifteenth day of August in the year of our Lord
One thousand eight hundred and eighty two.