Year: 1894

page_text: Date of Application, 4th July, 1894
Complete Specification Left, 3rd Apr., 1895-Accepted, 4th May, 1895
I, FRANCIS CAULFIELD, of Edington; Langside, in the City of Glasgow, Glass
and China Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention which relates to ball cocks for controlling the supply of water to
cisterns and other vessels has for its object to better adapt such cocks for closing
under the pressure of the inflowing water whilst being rapidly opened by a ball
lever of short length.
The improved ball cock or tap which is made in the form of the usual tube or
barrel connected to the inlet pipe has a small orifice in its side entering from the
inlet pipe and under it a web or partition formed with an annular valve seat upon
which rests a valve preferably made in the form of a cone whose base has a facing
of rubber or like material bearing on the ring seat. The valve has a central
tubular stem passing through the seat and in it are small orifices for the passage of
water through the stem to the outlet when the valve is raised off its seat.
ball lever is formed with a circular or disc like end which is pivoted on the lower
or outlet end of the barrel at a point eccentric to the contour of the disc so that
the latter acts as a cam upon the tubular stem of the valve and raises it when the
ball or float lever falls on the fall of the water level in the cistern and permits of
the valve dropping on to its seat when the float lever rises.
The
The action of the water on the inlet side when the valve is closed is to keep it
tightly on its seat whilst the float lever acting through the eccentric or cam
on the valve stem easily overcomes the pressure. The upper end of the barrel is
closed by a screwed plug the removal of which gives access to the valve, and a
light spring may be interposed between it and the valve, to ensure that the valve
may be kept on its seat in the event of weak pressure of water.
Dated this 3rd day of July 1894.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
I, FRANCIS CAULFIELD, of Edington, Langside, in the City of Glasgow, Glass
and China Merchant, 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 :-
This invention which relates to ball cocks for controlling the supply of water to
cisterns and other vessels has for its object to better adapt such cocks for closing
under the pressure of the inflowing water whilst being rapidly opened by a ball
lever of short length.
The invention is illustrated in vertical section at Figure 1 and in a vertical section
under a modification at Figure 2.

page_text: Referring to Figure 1 the improved ball cock or tap which is made in the form
of the usual tube or barrel A connected to the inlet pipe B has a small orifice C
in its side entering from the inlet pipe B and under it a web or partition formed
with an annular valve seat D upon which rests a valve E preferably made in the
form of a cone whose base has a facing of rubber or like material F bearing on
the ring seat D. The valve E has a central tubular stem E' passing through the
seat D and in it are small orifices e for the passage of water through the stem E¹
to the outlet G when the valve is raised off its seat. The ball lever H is formed
with a circular or disc like end which is pivoted on the lower or outlet end of the
barrel A at a point eccentric to the contour of the disc so that the latter acts as a
cam upon the tubular stem E of the valve E and raises it to admit the supply
water when the ball or float lever H falls on the fall of the water level in the
cistern and permits of the valve dropping on to its seat when the float lever rises.
Or as shewn the ball lever H may be secured on a pin pivoted on the lower end
of the barrel A a cam h¹ being also secured on said pin to act on the valve stem in
order to raise it.
The action of the water on the inlet side when the valve is closed is to keep it
tightly on its seat whilst the float lever acting through the eccentric or cam on
the valve stem easily overcomes the pressure. The upper end of the barrel is
closed by the cover I which is in the form of a screwed plug the removal of which
gives access to the valve E and a light spring J may be interposed between it and
the valve E to ensure that the valve may be kept on its seat in the event of weak
pressure of water.
In the modification shown at Figure 2 instead of the cam h', a cam groove /³
is formed in the valve stem E¹ which so acts on a pin passing through the
barrel A, when the ball or float lever which is secured on the stem E¹ drops with
the water level as to give the valve E a horizontal motion away from its
Beat D.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A ball cock the parts of which are constructed, combined and arranged to
operate substantially as described with reference to the annexed drawings.
Dated this 2nd day of April 1895.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62, St. Vincent Street, Glasgow, Agent for the Applicant.