Improvements in Thermostatic Valves for Radiators and the like..
Year: 1898

page_text: Date of Application, 24th May, 1898-Accepted, 27th Aug., 1898
444
[Communicated from abroad by MEREDITH LEITCH, of 3, Cedar Avenue, Merchant-
ville, Camden County, New Jersey, United States of America, Mechanical
Engineer.]
Improvements in Thermostatic Valves for Radiators and the like..
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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:-
It is the object of this invention to provide a thermostatic valve for steam
radiators, &c., of simple and efficient construction, and particularly such a combina-
tion and arrangement of parts as will permit an ordinary hand valve, of standard
make, to be economically and easily transformed into an efficient thermostatic
valve, by the addition of thermostatic parts, which may be easily and quickly
applied without necessitating any material change or alteration in the hand valve,
or its removal from the system.
The invention relates both to the thermostatic valve of novel construction as
hereinafter set forth, and also to the construction of the thermostatic parts,
whereby they are adapted to be applied to an old valve body to convert it into a
thermostatic valve, and to the combination of such thermostatic parts with the
old valve body.
By the improvements herein described an old hand valve can be converted into
a thermostatic valve by simply removing the disc from the valve stem and intro-
ducing the new thermostatic parts into the valve body, without otherwise dis-
mantling the valve or removing it from the connecting pipes.
In the drawings:
Fig. 1 is a vertical sectional view of a valve embodying my invention;
Fig. 2 is a transverse horizontal sectional view of the same on the line - of
Fig. 1;
Fig. 3 is a similar view on the line y-y of Fig.
Fig. 4 is a vertical sectional view similar to Fig. 1 illustrating another form
of the invention; and
Fig. 5 is an horizontal sectional view of the auxiliary seat piece on the line z-z
of Fig. 4.
A is the valve body (shown as an ordinary angle valve) provided with the in-
ternal partition a, which constitutes the valve seat of the ordinary hand valve,
and in which the usual valve aperture is located.
B is a pipe communicating with the valve body below the partition a.
C is the adjustable valve stem carried in the bonnet D and provided with the
usual wheel E.
Referring first to the construction shown in Figs. 1, 2 and 3, F is a nut carry-
ing an annular seat piece G adapted to fit into the opening f in the partition a,
and provided with one or more passageways or apertures 9 opening through the
nut into the annular passageway in the seat piece G.
His a headed bolt or post, the upper end of which is carried by the nut F,

page_text: preferably adjustable, for which purpose has been shown the threaded end of the
bolt or post received in a threaded recess or hole in the nut. A screw j extend-
ing through the nut and bearing upon the threaded, end of the bolt may be used
to lock the bolt or post in adjusted; position.
The lower end of the stem C abuts against the liéad of the nut F, thus hold-
ing it and the post H in position with the seat piece G held firmly upon the
partition a, the nut thus constitutes an extension or bearing by. which the seat
piece may be held in place.
I is the expanding member consisting of a tubular piece of expansible material,
surrounding the post H and supported by the head thereof with its upper end
immediately adjacent to and below the seat piece G upon which it is adapted to
close when elongated by expansion.
:..
The air and water pass into the valve body A; through the apertures g, and
annular opening in the nut, and thence out through the pipe B. When the
expanding piece I is expanded by the steam, it closes upon the bottom of the
valve piece G and closes the outlet through the seat pièce until it again contracts.
The expanding piece may be readily adjusted by the adjustment of the post H in
the nut F.
J is an annular dirt screen arranged about the nut F to catch the dirt or sedi-
ment that may be carried in the valve and prevent it passing into the thermostatic
parts.
In the construction shown in Figs. 4 and 5, the seat piece G is provided with a
yoke, bridge or extension 11 which constitutes the bearing upon
which the end of the valve stem C abuts to hold the piece G upon the seat fi
and instead of the tubular expanding piece carried by the internal post H, I
employ a cage or tubular piece H' extending down into the pipe B and connected
with the seat piece G, as by the screw threads h, and supporting at its lower end
the expanding piece I within the cage or tube H' with its upper end adjacent to
the seat of the piece G. The expanding piece I is preferably supported within
the tube or cage H¹ by a perforated nut K, adjustably carried by the tube through
the perforations in which the water, air and vapour may pass into the
pipe B, having first passed through the passage g in the seat piece G into the
tube H. These perforations in the nut K are not required when an open cage
is employed. By this construction the use of a tubular expanding piece may be
avoided and the consequent liability of minute particles of matter which pass
through the screen J. (if the screen is used) collecting within the tubular expand-
ing piece and impairing its action. In this construction the expanding piece may
be adjusted either by adjusting the cage or tube H¹ on the seat piece G, or by
adjusting the supporting nut K.
The thermostatic parts consisting of the nut F, post H and expanding piece I
as in Figs. 1, 2 and 3, or of the piece G, tube or cage H¹ and expanding piece I
as in Figs. 4 and 5 may be constructed. as a separate article of manufacture,
adapted for transforming an old hand valve into a thermostatic valve. To apply
these thermostatic parts to an old hand valve of the character described, it is
necessary simply to detach the bonnet D with the valve stem, remove the disc,
insert the thermostatic parts F, H, I, or G, H¹ and I, re-apply the bonnet and
screw down the valve stem until it abuts upon the nut F or bridge F¹ This
application of the invention is of especial advantage in transforming an ordinary
steam heating system into one in which the flow of water, steam and air from
the radiators or coils is controlled by thermostatic valves.
The details of construction shown may be varied without departing from the
invention.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed as communicated
to me by my foreign correspondent, I declare that what I claim is:-
First: The thermostatic valve substantially as herein described and shown

page_text: Second A thermostatic valve having a removable seat piece provided with a
support for the expanding piece independent of the valve body.
Third: The removable parts for converting a hand valve into a thermostatic
valve embracing a seat piece adapted to fit the apertures in valve body, and a
support for the expanding piece carried thereby."
Fourth: The removable seat piece carrying the expanding piece and held in
place by the valve stem.
Fifth The tubular extension H₁ carried by the seat piece and supporting
the expanding piece.
Sixth The construction shown in Figs. 1 and 3, embracing the supporting
part H carried by the seat piece, and the tubular expanding piece supported
thereby.
—————------
HASELTINE, LAKE & Co.,
45. Southampton Buildings London WC Acants for the Analicant
HASELTINE, LAKE & Co.,
45. Southampton Buildings London, WC Agents for the Ap
Applicant