Improvements in Water Taps.
Year: 1897

page_text: Date of Application, 10th Sept., 1897
Complete Specification Left, 10th June, 1898—Accepted, 16th July, 1898
Improvements in Water Taps.
I, JAMES MACNAUGHTON, of 26, Hanover Street, Edinburgh, in the County of
Midlothian, Gunmaker, do hereby declare the nature of this invention to be
as follows;-
This invention has for its object to provide a water tap of improved construction
wherein the spigot or turn cock of the tap is locked in the closed position by
the water pressure and the recoil or water hammer action arising from sudden
closing of the tap is prevented or minimised.
The improved tap is or may be of the ordinary external form but the water
channel in the spigot or stem and in the barrel of the tap is cut eccentrically
or nearer one side than the other; and in the ground face of the spigot a recess
is cut in such a position that when the spigot is turned to shut off the flow of
water the recess comes opposite the channel in the barrel on the pressure side.
One of the sides or faces of this recess is of greater area than the other and the
pressure of the water acting on it tends to turn the spigot in the direction
requisite for shutting off the water. Whilst the inrush of water to the recess
or cavity helps the action of shutting, the cavity also serves the purpose of
a recoil chamber in modifying the too sudden check of water under pressure.
In opening the tap the recess or cavity retires full of water which is discharged
through a weep hole formed in one side of the barrel whilst the tap is running,
and it is empty and ready to act as a recoil chamber when the tap is closed.
The spigot is slightly tapered and ground to fit its seat, and to ensure that it
may be kept tight notwithstanding wear a cross bar or like device on one or
more sides is caused to act on inclined planes or a cam surface on the seat or
part of a screw thread is formed between the spigot and its seat.
In this form of the improved tap the features of both the ground and the
screw tap are combined.
The improved tap may be operated by hand in the usual way or it may be
fitted in connection with a ball lever as a ball cock or otherwise applied.
Dated this 9th day of September 1897
WALLACE FAIRWEATHER,
Of the Firm of Cruickshank & Fairweather,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agent for the Applicant.

page_text: what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:―
This invention has for its object to provide a water tap of improved construction
wherein the spigot or turn cock of the tap is locked in the closed position by
the water pressure and the recoil or water hammer action arising from sudden
closing of the tap is prevented or minimised.
The improved tap, which is illustrated by the accompanying drawings,
Figure 1 being a vertical section, and Figure 2 a horizontal section thereof, is
or may be of the ordinary external form but the water channel A¹ in the spigot
or stem A and the water channel B₁ in the barrel B of the tap is cut eccentrically
ог nearer one side than the other; and in the ground face of the spigot a
recess A is cut in such a position that when the spigot A is turned to shut
off the flow of water the recess A² comes opposite the channel B in the barrel B
on the pressure side. One of the sides or faces of this recess A³ is of greater
area than the other and the pressure of the water acting on it tends to turn the
spigot A in the direction requisite for shutting off the water. Whilst the inrush
of water to the recess or cavity A helps the action of shutting, the cavity A³
also serves the purpose of a recoil chamber in modifying the too sudden check
of water under pressure.
a recoil
In opening the tap the recess or cavity A³ retires full of water which is
discharged through a weep Lole B formed in one side of the barrel B whilst
the tap is running, and the cavity A3 is empty and ready to act as
chamber when the tap is closed. The spigot A is slightly tapered and ground
to fit its seat B³ in the barrel B, and to ensure that it may be kept tight notwith-
standing wear, a washer C having one or more inclined faces or a cross bar
or like device on one or more sides, is caused to act on inclined planes or a cam
surface on the seat B³ or part of a screw thread is formed between the spigot A
and its seat B³.
In this form of the improved tap the features of both the ground and the
screw tap are combined.
The improved tap may be operated by hand in the usual way or it may be
fitted in connection with a ball lever as a ball cock or otherwise applied.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
The improved water tap constructed and arranged to operate substantially as
described.