An Improved Cook for Preventing Pipes and other Fittings from Bursting by Frost.
Year: 1895

page_text: Date of Application, 8th May, 1895
Complete Specification Left, 7th Feb., 1896-Accepted, 14th Mar., 1896
PROVISIONAL SPECIFICATION.
An Improved Cook for Preventing Pipes and other Fittings from
Bursting by Frost.
I, JAMES MILNE, Engineer, Milton House Works, Abbeyhill, Edinburgh, do
hereby declare the nature of this invention to be as follows:-
:-
Improved construction of screw valve frost cock, whereby the body of cook as
well as all pipes beyond valve are emptied by the action of shutting the frost
cock. This invention is applicable to pipes whether fitted in a vertical or
horizontal position.
The valve seat is on the outlet or under side of the diaphragm of metal which
bisects the body of the tap and which has a hole in centre through which the
water flows and which is closed by a valve which may be either ground or faced
with leather, fibre or other suitable material. There is also a hole in the bottom
of the tap which communicates with the open air.
The valve has a seat both above and below and 18 80 attached to the spindle and
key that it can be forced hard down on the bottom hole, thus allowing the water
to flow freely through yet allow none to escape and can also be diawn hard up,
thus shutting off the supply fiom the main and at same time opening the outlet
at the bottom whereby all the water in the house pipes and in the body of the tap
escapes.
The construction of the upper part of the tap is such that the least possible
amount of space is left for water to lodge, while full way is allowed for the water
to flow when the tap is opened.
The methods of raising and lowering the valve are various and are similar to
those employed in the existing common screw-down taps.
Dated th.. Q.-th day
1908
An Improved Cook for Preventing Pipes and other Fittings from
Bursting by Frost
JAMES MILNE, Milton House Works, Edinburgh, Engineer, 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 :-
My said invention refers to an improved construction of screw valve frost cock
to be fitted on to the pipe supplying water from main pipe to a house or other
building, whereby on the closing of that part of the cock which admits the water,
another valve is simultaneously opened in it, which allows all the water in the
pipes throughout the building to escape, and thus removes the danger of their
being burst through water freezing in them.
In this invention the construction is such that on closing the cock all the water,

page_text: both in the pipes and in the cock itself, runs to waste and there is no body of water
left for the frost to act upon.
Figure 1 shows the valve closed and the waste open.
Figure 2 shews the valve open and the waste closed. .
Figure 3 shews a plan of the body of the cock and valve in section at Y Z,
looking at it from underneath.
A A shews the body casting of the cock.
B18 a double-faced valve, the upper face closing the main valve C C, the lower
face closing the waste valve D D.
E is an escape outlet through which the waste water may either be allowed to
drain into the surrounding ground or be led away by a waste pipe.
FF are projections cast in the sides of the chamber in which the valve B
works; the valve B having corresponding grooves on its edges, thus preventing
the valve and spindle fiom revolving when the handle G is turned and allowing
the valve to be raised or lowered by the screw H.
Having now particularly described and ascertained the nature of my said inven-
Lion, and in what manner the same is to be performed, I declare that what I
claim 18:-
The construction of a screw-valve frost cock of such a form that the action of
shutting off the water opens a waste valve in the lowest part of the cock which
allows all the water to escape both from the pipes and from the body of the cock
itself all substantially as, and for the purposes herein described and shewn in the
accompanying drawings.
Dated this 3rd day of February 1896.