Improvements in Valves for Controlling the Supply of Steam to Steam Engines.
Year: 1899

page_text: Date of Application, 28th NOV., 1899
Complete Specification Left, 27th Aug., 1900-Accepted, 29th Sept., 190C
Date of Application, 28th Nov., 1899
Complete Specification Left, 27th Aug., 1900-Accepted, 29th Sept., 190C
PROVISIONAL SPECIFICATION.
Improvements in Valves for Controlling the Supply of Steam
to Steam Engines.
We, JOSEPH TEMPERLEY and JOHN RIDLEY TEMPERLEY, both of The Temperley
Transporter Company, 72, Bishopsgate Street Within, in the City of London,
Engineers, do hereby declare the nature of this invention to be as follows:-
This invention relates to valves for controlling the supply of steam to steam
engines, particularly to engines for high speed hoisting, where instant and
easy control of speed is essential, and our said invention has for its object a
valve which is practically frictionless and which will graduate the supply of
steam to the engine with the utmost nicety.
Friction is avoided by dispensing entirely with packing glands, by employing
oscillating instead of reciprocating motion, by passing the valve spindle through
the valve seat in a position not accessible to the steam, by taking, in some
instances (for example in large engines and in engines where high steam pres-
sure is used) the load of the valve en an adjustable thrust centre outside the
valve box, and by having two ports symmetrically disposed about the axis of
the valve. Graduation of area of the port openings is obtained by shaping the
ports in a peculiar manner.
In our iniproved construction of valve, the parts of the valve seat more distant
from the axis wear more quickly than the annular part near the spindle and
are thereby relieved of their full share of the weight and consequent resistance.
so that most of the resistance is thrown on the part near the spindle, thereby
greatly reducing the effort required to move the valve.
on
the
a cover
The valve proper preferably comprises two quadrant segments the edges of
which are approximately radial, stops being provided on the back of the valve to
in
valve body, or
with corresponding stops
engage
valve is inserted, to
which close the opening through which the
the rotary movement of the valve. An adjustable stop is also provided to prevent
the valve from leaving its seat.
limit
In the case of large valves or where the steam pressure is high the pressure
of the valve on its seat is relieved by means of an adjustable screw screwing
through a bridge piece and arranged with its pointed end bearing in the outer
end of the valve spindle. This screw is adjusted by means of its hand wheel
until the pressure of the steam on the back of the valve is nearly balanced, and
the pressure of the valve on its seat thereby reduced to a minimum, so that the
valve can then be moved with the greatest facility. In order that the opening
and closing of the valve shall be very gradual we make the admission edges of
the ports inclined to the radius so that the full width of the ports will not be
opened instantly, but the opening will start at the inner edges of the ports and
gradually widen until the full width of the ports is exposed.

page_text: If desired we may provide the valve with more than two quadrants, and a
corresponding number of ports in the valve seat.
Dated the 28th day of November 1899.
JOSEPH TEMPERLEY,
JOHN RIDLEY TEMPERLEY,
1. Young & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicants.
Improvements in Valves for Controlling the Supply of Steam
to Steam Engines.
We, JOSEPH TEMPERLEY and JOHN RIDLEY TEMPERLEY, both of The Temperley
Transporter Company, 72, Bishopsgate Street Within, in the City of London,
Engineers, 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 controlling the supply of steam to steam
engines, particularly to engines for high speed hoisting, where instant and
easy control of speed is essential, and our said invention has for its object a
valve which is practically frictionless and which will graduate the supply of
steam to the engine with the utmost nicety.
Friction is avoided by dispensing entirely with packing glands, by employing
oscillating instead of reciprocating motion, by passing the valve spindle through
the valve seat in a position not accessible to the steam, by taking, in some
instances (for example in large engines and in engines where high steam
pressure is used), the load of the valve on an adjustable thrust centre outside
the valve box, and by having ports symmetrically disposed about the axis of
the valve. Graduation of area of the port openings is obtained by shaping the
ports in a peculiar manner.
In our improved construction of valve, the parts of the valve seat more
distant from the axis wear more quickly than the annular part near the spindle
and are thereby relieved of their full share of the load due to the fluid pressure,
thus diminishing the resistance to motion at this part, so that most of the
resistance is offered at the part near the spindle, thereby greatly reducing the
effort required to move the valve.
Referring to the accompanying drawing which illustrates our improvements:-
Figure 1 is a longitudinal central section, and
Figure 2 an elevation of our improved controlling valve, with the cover plate
and the valve removed.
Figure 3 is a rear view of the valve.
C
Like letters of reference indicate corresponding parts throughout the drawing.
is the valve body, the valve proper which is furnished with a spindle
that projects through a long bushing and that can be turned to open the
valve by means of a handle e fixed on the outer end of the said spindle. f is
the valve seat, and g, g are port openings, symmetrically disposed about the
axis of the valve, and forming communications between the inlet end and the
outer end of the valve body. The valve is inserted through an opening k in
the body, which opening is closed by a cover plate /. The valve proper is pre-
ferably shaped as indicated in Figure 3 and comprises two quadrant segments
the edges of which are approximately radial. Stops m, m are provided on the

page_text: back of the valve to engage with corresponding stops m (shown in broken
lines on Figures 1 and 3), on the cover to limit the rotary movement of the
valve. An adjustable screw stop n screwed into a bush in the cover and adjusted
until its end is just clear of the valve, is provided to prevent the valve from
leaving its seat.
In the case of large valves or where the steam pressure is high, the pressure
of the valve on its seat is relieved by means of an adjustable screw screwing
through a bridge piece carried by pillars s, s and arranged with its balled or
pointed end bearing in a recess in the outer end of the valve spindle. The screw
is adjusted by means of its hand wheel t until the pressure of the steam on the
back of the valve is nearly balanced and the pressure of the valve face on its
seat thereby reduced to a minimum, whereupon the valve can be turned with
the greatest facility and the supply of steam to the engine can be controlled or
regulated with the utmost nicety. In order that the opening and closing of
the valve shall be very gradual, we make the edges e, of the ports y, g inclined
to the radius as indicated in Figure 2, so that the full width of the ports will
not be opened instantly but the opening will start at the inner edges of the
ports and gradually widen until the full width of the ports is exposed.
Instead of the stops m¹ on the cover l, suitable stops can be provided on the
valve body a to engage with the corresponding stops m on the back of the valve b
and thus limit the rotary movement of the said valve. If desired, we may pro-
vide the valve with more than two quadrants, and provide a corresponding
number of ports in the valve seat.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:
1. An oscillating controlling or regulating valve in which the valve proper
is constructed with a spindle projecting through the valve seat, substantially as,
and for the purpose, specified.
2. An oscillating controlling or regulating valve in which the valve proper is
constructed with a spindle projecting through the valve seat, and supported by
an adjustable screw bearing on the outer end of the spindle, substantially as,
and for the purpose, specified.
3. The construction of the controlling valve with radial segments symmetri-
cally disposed around the valve spindle in combination with ports having edges
inclined to the radius, substantially as described, and for the purpose specified.
4. A controlling valve constructed substantially as described with reference
to the accompanying drawing, for the purpose specified.
Dated this 24th day of August 1900.
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicants.