Improvements in Valves for Steam Traps.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Valves for Steam Traps.
We, ROBERT DAWSON & Co. LIMITED, Hartley Works, of Stalybridge, in
the County of Lancaster, Heating and Ventilating Engineers, and HENRY BRIGGS
KERSHAW, of Hartley Works, aforesaid, Managing Director, do hereby declare
the nature of this invention to be as follows:-
This invention relates to valves for certain types of steam traps in which
the outlet of the valve moves about a centre to open and close the steam port
and is held up to its seating by and pivoted to bolts or rods controlled by
springs.
We make the tap or valve with a straight barrel open at the outer end and
fitted with a screw plug by which it can be readily cleared of any obstruction
At the front or one side we provide a chamber or projection with the steam
port and valve seating below and a lug or guide at each side to receive the
bolts or rods to which the valve barrel is pivoted and by which it is held to
its seating, and thus obviate the necessity of taking the rods through the water-
way.
A cross plate is placed over the two rods and springs and nuts thereon to
give the desired pressure, or a balanced or weighted lever may be employed
for the same purpose.
Dated this Cth dov of
1000
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
improvements in Valves for Steam Traps.
We, ROBERT DAWSON & Co. LIMITED, of Hartley Works, Stalybridge, in
the County of Lancaster, Heating and Ventilating Engineers, and HENRY BRIGGS
KERSHAW, of Hartley Works, aforesaid, Managing Director, 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 relates to valves for certain types of steam traps in which
the outlet of the valve moves about a centre to open and close the steam port
and is held up to its seating by and pivoted to bolts or rods controlled by
springs.
It consists essentially in constructing the tap or valve with a straight inlet
tube barrel open at the outer end and closed by a screw plug and with two
exterior lugs or guides through which the spring controlled securing bolts pass.
Price 8d1

page_text: It will be fully described with TerTCHCO
Fig. 1. Front elevation.
Fig. 2. Side elevation.
Fig. 3. Longitudinal section on line y-y Fig. 2.
Fig. 4. Transverse section on line - Fig. 1.
Fig. 5. Sectional plan on line - Fig. 1.
We make the tap or valve with a straight inlet tube or barrel A open at both
ends and closed at the outer end by a screw plug B which can be readily removed
to clear it of any obstruction.
At the front or side of the inlet tube A we form or attach a chamber C
connected to or opening into the inlet tube A with the outlet port I placed
below.
The discharge valve E is of the ordinary form with a cylindrical seating L
and held in position by two bolts F and springs G the port D being opened
and closed by the rise and fall of the discharge nozzle H.
At each side of the chamber we construct a lug or guide K to receive the
bolts or rods F to which the valve barrel or cylinder E is pivoted and by which it
is held to its seating L.
This arrangement obviates the necessity of taking the rods or bolts F through
the interior of the tube A as has hitherto been the case.
A cross plate M is placed over the two rods F and springs G and nuts f are
applied thereto to give the desired pressure. Or a balanced or weighted lever
may be applied for the same purpose.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. Valves for steam traps constructed with a straight inlet tube open at both
.ends and closed at one with a removable plug, an outlet chamber placed at
one side, and guides for the bolts or rods placed outside to obviate the taking
of the rods into the interior in combination with a cylindrical valve and valve
seating and two attaching rods to which the valve is pivoted substantially as
described.
2. A valve for steam traps constructed and arranged in combination substan-
tially as described and shown.
WM. P. THOMPSON & Co.;
Manchester, Liverpool & London, Patent Agents.