UND-ARMATUREN-FABRIK vor
Year: 1893

page_text: Date of Application, 9th May, 1893
Complete Specification Left, 9th Feb., 1894-Accepted, 31st Mar., 1894
1mрrоvещодю
A communication by THE "MASCHINEN-UND-ARMATUREN-FABRIK vormals
C. LOUIS STRUBE, AKTIENGESELLSCHAFT," of Magdeburg-Buckau, in the
Empire of Germany, Manufacturers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6 Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this invention
to be as follows:-.
Cocks or valves, even of the best construction, are frequently not tight, generally
for three reasons.
Firstly, owing to the necessary forcible closing of the same, which causes a more
or less rapid wearing away of the washer surfaces-sometimes, indeed, only after
years-according to the durability of the material employed.
Secondly, owing to acid liquids in case such exist in the tubes connected with the
valves.
Thirdly, however, by the constant wearing away in consequence of substances
passing with great rapidity on or over the washer surfaces.
This latter action is, according to experience, the cause of grooves which become
evident in the seat and cone or plug. This action particularly takes place during
the opening and closing of the valve, as, during this period, the speed of the
passage of the substances is more accelerated, but it also takes place when the tap
is normally open.
This invention has for its object to remove the washer surfaces from this
frictional action. For this object, the contact surfaces of the cone or plug are
enclosed by means of annular walls, whilst another partition or wall on the seat of
the valve carries the current away from the washer surfaces.
One of the walls herein before mentioned extends down to the seat, leaving a
very narrow room for play, so that, when the valve is opened, only an opening of
very small diameter is left for the flow, whilst the bulk of the liquid is forced to
pass over the partition on the valve seat, whereby it becomes expanded and its
speed reduced.
Dad thin och JM... 1902
WM. P. THOMPSON & Co.,
Agents for the Applicant.
A communication by THE MASCHINEN-UND-ARMATUREN-FABRIK vormals
C. LOUIS STRUBE, AKTIENGESELLSCHAFT, of Magdeburg-Buckau, in the
Empire of Germany, Manufacturers.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E., of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both
in the County of Lancaster and 323 High Holborn in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention and in what manner
n

page_text: the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
Cocks or valves, even of the best construction, are frequently not tight, generally
for three reasons.
Firstly, owing to the necessary forcible closing of the same, which causes a more
or less rapid wearing away of the washer surfaces-sometimes, indeed, only after
years-according to the durability of the material employed.
Secondly, owing to acid liquids in case such exist in the tubes connected with the
valves.
Thirdly, however, by the constant wearing away in consequence of substances
passing with great rapidity on or over the washer surfaces.
This latter action is, according to experience, the cause of grooves which become
evident in the seat and cone or plug. This action particularly takes place during
the opening and closing of the valve, as, during this period, the speed of the
passage of the substances is more accelerated, but it also takes place when the tap
is normally open.
This invention has for its object to remove the washer surfaces from this
frictional action.
On the accompanying drawing,
Figure 1 is a sectional view of the valve when opened, and
Figure 2 a sectional view of the same when closed.
For this object, the contact surfaces of the cone or plug are provided with
annular protective walls a and b, whilst another partition or wall c on the seat of
the valve carries the current away from the washer surfaces.
The wall a hereinbefore mentioned extends down to. and fits into the seat,
leaving a very narrow room for play, so that, when the valve is being opened,
only an opening of very small diameter is left for the flow, and the liquid is forced
to pass over the partition c on the valve seat, whereby it becomes expanded and
its speed reduced.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is-
An improved valve or cock having its washer surfaces provided with annular
protective walls a and b at the cone or plug, and a partition c on the seat, whereby
the washer surfaces are not exposed to the wearing action of the substances
flowing through them when the valve is being opened, or is partially or fully open
substantially as described and shown.
Dated this 8th day of February 1894.