Improvements in and relating to Check-feed, Hydraulic, Feed-pump and like Valves.
Year: 1899

page_text: Date of Application, 31st Jan., 1899
Complete Specification Left 14th Oct 1800 rented
10th AL.
4000
PROVISIONAL SPECIFICATION.
Improvements in and relating to Check-feed, Hydraulic, Feed-pump
and like Valves.
I, JAMES MENZIES, of 52, Mount Street, in the County of the City of Glasgow,
Engineer, do hereby declare the nature of my invention to be as follows:-
This invention has reference to improvements in and relating to check-feed,
hydraulic, feed-pump, and like valves, and comprises the forming of an annular
channel or recess on bottom of valve which will fit over the valve seat; or
vice versa, forming said channel on the top of seat for a projecting rim or flange
on the valve to fit into, so that when the valve is raised or partially raised, and
the boiler or back pressure comes on to close it, water will be confined in said
channel, and in being displaced will form a cushion and so prevent "knock,"
vibration, and wear of valve face.
Dated the 30th day of T
1000
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
Improvements in and relating to Check-feed, Hydraulic, Feed-pump
and like Valves.
I, JAMES MENZIES, of 52, Mount Street, in the County of the City of Glasgow,
Engineer, do hereby declare the nature of my invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement reference being made to the accompanying drawing,
that is to say:-
This invention has reference to improvements in and relating to check-feed,
hydraulic, feed-pump, and like valves.
And in order that my said invention and the manner of carrying same into
practice may be properly understood I have hereunto appended an explanatory
drawing representing a sectional elevation of a valve as constructed in accordance
with my improvements.
Referring to said drawing:-
-
I form an annular channel or recess a¹ on bottom of valve a which will fit
over the valve seat b; or vice versa said channel may be formed on the top of
seat 6 for a projecting rim or flange on the valve a to fit into, so that when the
valve a is raised or partially raised, and the boiler or back pressure comes on
to close it, water will be confined in said channel a¹, and in being displaced will
[Price 8d

page_text: form a cushion and so prevent "knock," vibration, and wear of valve face. A
similar channel or recess c¹ may be formed in the fixed or stop part c of valve
chest, with water inlet openings at bottom end, so that when the valve a
is being raised, water will be confined in the channel c¹, and in being displaced
will form a cushion to deaden noise or vibration.
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:-
First. In connection with check-feed, hydraulic, feed-pump, and like valves,
the method of preventing knock, vibration and wear, consisting in forming a
channel space a' for water to lodge and in being displaced form a cushion,
substantially as set forth.
Second. Check-feed, hydraulic, feed-pump and like valves constructed with
an annular water channel or recess a¹, to have a cushioning action, substantially
as and in the manner herein described in reference to and shown in the accom-
panying drawing.