A New or Improved Valve for Liquid, Steam, Compressed Air, and other like Pumps.
Year: 1896

page_text: Date of Application, 21st May, 1896
Complete Specification Left, 22nd Dec., 1896-Accepted, 27th Feb., 1897
PROVISIONAL SPECIFICATION.
A New or Improved Valve for Liquid, Steam, Compressed Air, and
other like Pumps.\
We, TANGYES LIMITED of Cornwall Works Soho, in the County of Stafford,
Engineers and EDWARD JOHNSON, of No. 12 Church Street Moxley in the County
of Stafford Mechanical Engineer do hereby declare the nature of this invention to
be as follows:-
The said invention consists of the construction and arrangement or combination
of parts hereinafter described constituting a new or improved valve for liquid,
steam, compressed air and other like pumps.
The valve constituting the said invention is especially applicable to pumps of the
kind known as direct acting pumps employed in the raising of thick and gritty
liquids in which pumps hinged flap valves of the kind commonly called "clack"
valves are generally emploved. In order that the said invention may be the
hetter understood we remark that "clack" valves used in the said pumps are only
capable of opening to their maximum height at the side of the valve seat opposite
to that at which they are hingel, consequently the open valve somewhat obstructs
the passage of liquid through the opening of the said valve. The said invention
has for its object to provide a valve having a vertical rising motion on opening,
but which has the advantage possessed by "clack" valves namely that should grit
accumulate or settle on the valve seat the valve may take an inclined position with
respect to its seat on closing.
In constructing a valve according to the said invention a cylindrical rod is
arranged in the axis of the valve and on the said rod a circular metallic disc con-
stituting the valve proper is passed, the said disc having a hole and depression at
its middle of a diameter somewhat larger than the diameter of the vertical spindle,
the said depression having a hollow spherical part or seat. On the said spindle a
boss or loose collar is passed the lower end of which is spherical and seats itself in
the hollow spherical seat of the valve proper, being kept in close contact with its
seat by the coiled spring around the axial rod which effects the closing of the
valve.
The action of the valve is as follows. On the opening of the valve the circular
disc constituting the valve proper rises vertically, lifting the collar or boss an its
upper side up the axial rod herein before referred to and compressing the coiled
spring. On the closing of the valve the circular disc descends on to its seat and
seats itself if the valve seat is clear uniformly on the said seat; but if the seat is
obstructed at any point by grit or the like the circular disc turns on the spherical
underside of the axial collar or boss and becomes inclined to its seat and takes a
bearing on the unobstructed part of the valve seat.
The application of the said invention to the valves of pumps other than direct
acting pumps as well as to the valves of pumps for steam compressed air and the
like differs in no essential respect from its application to the valves of direct acting
pumps as herein before described.
Max 1896
W. T. WHITEMAN,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
A New or Improved Valve for Liquid, Steam, Compressed Air, and
other like Pumps.
We, TANGYES LIMITED, of Cornwall Works, Soho, in the County of Stafford,.
Engineers and EDWARD JOHNSON, of No. 12, Church Street, Moxley in the.
County of Stafford, Mechanical Engineer, do hereby declare the nature of the
said invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
The said invention consists of the construction and arrangement or combination
of parts hereinafter described constituting a new or improved valve for liquid,
steam, compressed air and other like pumps.
The valve constituting the said invention is especially applicable to pumps of
the kind kuown as direct acting pumps employed in the raising of thick and gritty
liquids, in which pumps hinged Hap valves of the kind commonly called "clack"
valves are generally employed. In order that the said invention may be the
better understood we remark that "clack" valves used in the said pumps are
only capable of opening to their maximum height at the side of the valve seat
opposite to that at which they are hinged, consequently the open valve somewhat
obstructs the passage of liquid through the opening of the said valve. The said
invention has for its object to provide a valve having a vertical rising motion on
opening, but which has the advantage possessed by clack valves, namely, that
should grit accumulate or settle on the valve seat, the valve may take an inclined
position with respect to its seat on closing.
On
In constructing valve according to the said invention a cylindrical rod is
arranged in the axis of the valve and on the said rod a circular metallic disc con-
stituting the valve proper is passed, the said disc having a hole and depression at
its middle of a diameter somewhat larger than the diameter of the vertical spindle,
the said depression having a hollow spherical or hollow conical part or seat.
the said spindle a boss or loose collar is passed the lower end of which is spherical
and seats itself in the hollow spherical or hollow conical seat of the valve proper,
being kept in close contact with its seat by the coiled spring around the axial rod
which effects the closing of the valve.
The action of the valve is as follows:-On the opening of the valve the
circular disc constituting the valve proper rises vertically, lifting the collar or boss
on its upper side up the axial rod hereinbefore referred to and compressing the
coiled spring. On the closing of the valve the circular disc desceuds on to its seat
and septs itself, if the valve seat is clear, uniformly on the said seat; but if the
seat is obstructed at any point by grit or the like the circular disc turns on the
spherical underside of the axial collar or boss and becomes inclined to its seat an!
takes a bearing on the unobstructed part of the valve seat.
Figure 1 of the accompanying drawing represents in vertical section a portion
of a direct acting pump provided with a valve constructed according to the said
invention, the said valve having a metallic face and being used in the position and
in place of an ordinary "clack" valve.
Figures 2 and 3 represent respectively in elevation and plan the said valve
separately.
Figure 4 represents in vertical section the circular metallic disc of a valve con-
structed according to the said invention provided with a leather or vulcanite or
other like face.
Figure 5 represents in vertical section the circular metallic disc of a valve con-
structed according to the said, invention provided with a vulcanized india rubber or
other clastic face.

page_text: The same letters of reference indicate the same parts in the several figures of
the drawing.
a is the axial rod of the valve passing through the circular disc b constituting the
valve proper and also through the valve seat c. The axial hole in the valve proper b
is of hollow conical figure and somewhat larger in diameter than the axial rod a.
On the axial rod a is a loose boss or collar d, d³ the base or part d' having a spherical
shape and bearing against the conical side of the hole in the circular valve b. The
loose collar d is kept to its seat in the conical hole of the valve by the coiled
spring e the valve b being thereby closed through the action of the said collar d
upon it. The coiled spring e bears at top against the fixed collar f on the axial
rod a.
When by the action of the pump the valve b is opened the said valve together
with the collar d rise vertically, the coiled spring e being thereby compressed and
a clear or unobstructed passage for the liquid is thereby provided. It will be seen
that should on the closing of the valve, any grit accumulate on any portion of the
valve seat c the valve b coming in contact with the said grit turns on the spherical
part of the collar d and takes an inclined position with respect to its seat thus
effecting a practical or nearly perfect closing of the valve.
When the valve b is to be provided with a leather or other soft slightly yielding
face we prefer to make the said valve in two parts marked b, 62 in. Figure 4, the
opposed faces of the two parts, between which the leather or other washer or
packing 9 is gripped, being preferably riobed or serrated for the purpose of
preventing the unscrewing of the two parts by the shaking of the valve in use.
Other methods than that shown in Figure 4 may be adopted for securing the
leather washer or packing g in place.
When a vulcanized india rubber or elastic face is provided as in Figure 5 the
circular valve b, made in one piece, has a neck 6 in it into which the elastic.
washer is sprung.
Although we have described and shown the axial rod a on which the collar d'
works as passing through the valve seat c we wish it to be understood that the said
axial rod a may terminate at or near the base of the collar d.
The application of the said invention to the valves of pumps other than direct
acting pumps as well as to the valves of pumps for steam, compressed air and the
like differs in no essential respect from its application to the valves of direct acting
pumps as hereinbefore described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that we claim.
as the said invention ;-
The new or improved valve for liquid, steam compressed air and other like
pumps hereinbefore described and represented in the accompanying drawing the
said valve consisting essentially of a circular disc or valve proper capable of a
vertical rising and falling motion and of a slight angular or tilting motion on a
loose collar or boss ou an axial guiding rod, the said loose collar or boss being.
kept in contact with the valve proper by the spring, or its equivalent, which.
effects the closing of the valve substantially as hereinbefore described and.
illustrated.
Dated the 21st dor of December 1906