Improvements in Automatic Plugs or Valves for Boats and the like.
Year: 1899

page_text: Date of Application, 7th Nov., 1899
Complete Specification Left, 7th Sept., 1900-Accepted, 3rd Nov., 1800
PROVISIONAL SPECIFICATION.
Improvements in Automatic Plugs or Valves for Boats and the like.
We, ALEXANDER PURVIS, Manufacturer, and WALDEMAR HARBINGER, Engineer,
both of Albany Chambers, 63, King Street, South Shields, in the County of
Durham, do hereby declare the nature of this invention to be as follows:-
Our invention relates to automatic plugs or valves for boats and the like, the
object being to provide a plug or valve by which, not only is the unintentional
inflow of water into the boat or the like through the bottom effectively prevented,
but water can be retained in the boat or the like when, and as long as may be
desired.
A plug or valve embodying our invention comprises a chamber or casing
having openings for the flow of water, an automatic valve enclosed by the
chamber or casing, and a non-automatic valve arranged in connection with the
chamber or casing to serve as an auxiliary to the automatic valve.
According to one suitable construction of our plug or valve, which we will
describe by way of example, we employ two oppositely curved or hollow parts,
which, when put together, constitute between them the said chamber or casing.
These two parts or components are arranged at the bottom of the boat around or
in the usual hole therein, one being situated at the exterior side, and the other
at the interior side of the bottom, to which both are fastened, as well as to each
other, by the same screws or through-bolts.
Within the chamber, the automatic valve, conveniently in the form of a
floatable valve composed of a disc fitted with floats at its underside, and having
its upper side shaped convexly to form a valve face, is disposed, the seat therefor
being appropriately made on the lower side of the upper or interior component of
the chamber, and for ensuring proper action, the valve is preferably furnished
with a stem or spindle for working in a guide or boss on the inner side of the
lower or exterior chamber component in which openings are made for admitting
the inlet and outlet of water to and from the chamber.
We form the upper component of the chamber with a hollow prolongation
closed at one end and communicating with the chamber at the other, and in the
wall of same we make openings which are covered and uncovered by a screw
cap arranged over the prolongation screwed for the purpose. This screw cap
constitutes the non-automatic valve aforesaid.
For obtaining a tight joint between the prolongation and the cap, the lower
end of the latter is fitted with a packing ring; and for determining the opening
of the cap an appropriate atop is provided, such as a headed pin passed through
the top of the prolongation and fixed to the cap, so that in unscrewing the
cap, the head of the pin eventually comes in contact with the prolongation,
whereby the desired limitation accrues.
Suitably, the parts comprising our valve or plug may be of brass, with the
exception of the floats and packing, which may be of cork and rubber respectively,
Briefly, the operation of our plus or valve is as follows ..

page_text: When the boat is out of the water say when on the chocks in the case of a
ship's boat the automatic or floatable valve drops by its own weight, and
reposes off its seat, whereas the non-automatic valve or screw cap may be screwed
down or unscrewed; but if in the latter position, then any water in the boat
Hows through the openings in the prolongation into, and out of the automatic
valve chamber. However, when the boat is waterborne, the water immediately
passes into the chamber and lifts and forces the floatable valve upon its seat,
whereupon inflow into the boat is effectually stopped, while when the cap is
screwed down (assuming it to have been unscrewed) this inflow is doubly pre-
vented, hence the maximum of safety is obtained, for, should the automatic
valve become defective or useless, the non-automatic valve will obviate the
possibility of undesired inflow.
Sometimes, as a preservative, it is necessary to keep a boat full of water,
and by our plug or valve this is rendered easy of accomplishment, since all
that is required is to shut the non-automatic valve, and when this is done the
water can be retained as long as may be required.
Thus it will be seen that by our invention we avoid all the defects of previous
plugs or equivalent devices simply and cheaply, but retain their advantages at
the same time.
Improvements in Automatic Plugs or Valves for Boats and the like.
We, ALEXANDER PURVIS, Manufacturer, and WALDEMAR HARBINGER, Engineer,
both of Albany Chambers, 63, King Street, South Shields, in the County of
Durham, do hereby declare the nature of this invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement:-
Our invention relates to automatic plugs or valves for boats and the like, the
object being to provide a plug or valve by which, not only is the unintentional
inflow of water into the boat or the like through the bottom effectively pre-
vented, but water can be retained in the boat or the like when, and as long as may
be desired.
A plug or valve embodying our invention comprises a chamber or casing
having openings for the flow of water, an automatic valve enclosed by the cham-
ber or casing, and a non-automatic valve arranged in connection with the
chamber or casing to serve as an auxiliary to the automatic valve.
We will now fully describe the invention in reference to the accompanying
drawings of which Fig. 1 is a vertical central section and Fig. 2 is an underside
plan showing, by way of example, one construction of our plug or valve suitable
for a boat.
According to this construction, we employ two oppositely curved or hollow
parts A, B which, when put together, constitute between them the said chamber
or casing C. These two parts or components A, B are arranged at the bottom D
of the boat, around or in the usual hole therein, one A being situated at the
exterior side, and the other B at the interior side of the bottom D, to which both
are fastened, as well as to each other, by the same screws or through bolts E—E.

page_text: Within the chamber C, the automatic valve F-conveniently in the form of a
floatable valve composed of a disc f fitted with floats ff at its underside, and
having its upper side shaped convexly to form a valve face is disposed, the
seat 6 therefor being appropriately made on the lower side of the upper or
interior component B of the chamber, and for ensuring proper action, the
valve F is preferably furnished with a stem or spindle for working in a guide
or boss a on the inner side of the lower or exterior chamber component A in
which openings aa¹ are made for admitting the inlet and outlet of water to
and from the chamber C.
We form the upper component B of the chamber with a hollow prolonga-
tion B closed at one end b and communicating with the chamber C at the
other, and in the walls of same we make openings 63-6 which are covered and
uncovered by a screw cap G arranged over the prolongation B₁ screwed for the
purpose. This screw cap G constitutes the non-automatic valve aforesaid,
For obtaining a tight joint between the prolongation B' and the cap G, the
lower end of the latter is fitted with a packing ring g; and for determining
the opening of the cap G an appropriate stop is provided, such as a headed pin g
passed through the top 61 of the prolongation B¹ and fixed to the cap G, so that
in unscrewing the cap G, the head of the pin g¹ eventually comes in contact
with the top of the prolongation B¹ whereby the desired limitation accrues.
Suitably, the parts comprising our valve or plug may be of brass, with the
exception of the floats and packing g, which may be of cork and rubber
respectively.
Briefly the operation of our plug or valve is as follows:-
When the boat is out of the water-say when on the chocks in the case of a
ship's boat the automatic or floatable valve drops by its own weight, and
reposes off its seat b, whereas the non-automatic valve or screw-cap G may be
screwed down or unscrewed; but if in the latter position, then any water in the
boat flows through the openings in the prolongation B' into, and out of, the
automatic valve chamber C. However, when the boat is waterborne, the water
immediately passes into the chamber C and lifts and forces the floatable valve F
upon its seat b, whereupon inflow into the boat is effectually stopped, while when
the cap G is screwed down (assuming it to have been unscrewed) this inflow is
doubly prevented, hence the maximum of safety is obtained, for, should the auto-
matic valve F become defective or useless, the non-automatic valve G will
obviate the possibility of undesired inflow.
Sometimes, as a preservative, it is necessary to keep a boat full of water,
and by our
plug or valve this is rendered easy of accomplishment, since all that
is required is to shut the non-automatic valve G, and when this is done the water
can be retained as long as may be required.
Thus it will be seen that by our invention we avoid all the defects of previous
plugs or equivalent devices simply and cheaply, but retain their advantages at
the same time.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that
what we claim is :-
1. A plug or valve for boats and the like, comprising a chamber or casing
having openings for the flow of water, an automatic valve enclosed by the cham-
ber or casing, and a non-automatic valve arranged in connection with the
chamber or casing to serve as an auxiliary to the automatic valve, all sub-
stantially as and for the purposes hereinbefore described.
2. A plug or valve for boats and the like, comprising two oppositely curved
or hollow parts or components secured one at the exterior side and the other at
the interior side of the bottom of the boat or the like and around 'the usual hole
therein, said parts or components forming between them a chamber or casing
communicating with the outside and inside of the boat or the like by means

page_text: of openings in each of the parts or components; a floatable valve disposed within
the chamber or casing and adapted to be closed by the pressure of water below
it, and opened by its own weight; and a screw cap constituting a non-automatic
valve for controlling the openings in the interior part or component, the whole
being adapted for use substantially as described in reference to the accompany-
ing drawings.
3. The combination of parts constituting the improved automatic plug or valve
for boats and the like, all arranged and operating substantially as herein before
described, and as shown in the accompanying drawings.
נג.
eil 1
1000
For the Applicants,
J. A. HARVEY,
Chartered Patent Agent,
3, St. Nicholas' Buildings, Newcastle-on-Tyne.