Improvements in or connected with Regulating Devices for Steam Heating Stoves.
Year: 1892

page_text: Date of Application, 29th Sept., 1892-Accepted, 12th Nov., 1892
COMPLETE SPECIFICATION.
Improvements in or connected with Regulating Devices for Steam
Heating Stoves.
A communication by FRITZ KAEFERLE, of Hannover, in the Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street, Man-
chester, both in the County of Lancaster, and 323, High Holborn in the County of
Middlesex, Civil Engineer, 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 :-
For the more rapid and convenient regulation of steam heating stoves, it is
necessary that the hot steam may be able to enter them at any time and in any
suitable quantity, and at the same time that the water of condensation must be
allowed to constantly flow away in proportion as it is formed so as not to deprive
the hot steam of a portion of its heat by accumulating in the stove. Further, if
the steam supply pipe of the stove be at the same time employed for carrying off the
condensed water, which effects a saving in the cost of the whole apparatus, care
must be taken that the hot steam does not cross with the condensed water which is
flowing away, as otherwise knockings and shocks in the steam stove and irregularities
in the working will result therefrom.
This improved regulating device for steam heating stoves is more particularly
shown on the accompanying sheet of illustrative drawings.
Figure 1 represents a section of a part of a heating stove with the regulating
device attached thereto, and
Figures 2, 3 and 4 side and front views in partial section.
Figures 5 and 6 represent a somewhat modified form of regulating device in
longitudinal and vertical section.
a is a hollow chamber which is suitably and movably arranged on its longitudinal
axis in a case which is connected with the steam supply pipe c and the steam
stove D and at the same time forms the pedestal of the same. Both chamber and
case which may be cylindrical or conical in form, are each provided with two
corresponding openings and e of which is arranged at the top and e in the
bottom of the same, and which openings form a connection between the tube c and
the stove D. A short piece of tube is attached to the case b which penetrates
into the interior of the stove D, and serves to allow the condensed water running
out of the stove to pass into the lowest part of the case b, that is, round the
chamber a, and to conduct it away through the opening e to the tube c, by which
means a crossing of the hot steam and condensed water with the resulting knock-
ings and shakings in the heating arrangement is avoided. This small pipe may
also be omitted according to the conditions under which the stove is to work. If,
for instance, the stove is constantly at work with a low steam pressure, the steam
therefore enters the stove with small tension, the piece of tube may be omitted
without affecting the noiseless working of the apparatus. If, on the other hand,
the stove work with a high pressure of steam, the piece of tube f must be
employed because then the steam, entering at a higher tension, will too easily
force back the condensed water running out of the stove through e, carry it forward
again with it, and thereby give rise to knockings and shocks in the heating
apparatus.
The steam which is employed for heating the stove D, flows through the tube c
into the chamber a, and reaches, through the top opening d, the interior of the
same where it imparts its heat to the walls of the stove. The condensed water,
formed by reason of its cooling there, collects in the lower part of the stove D
D

page_text: and of the case b, passes through the lower opening e in the latter into the chamber a
and flows away noiselessly from there through the tube c beneath the inflowing steam
back to the steam boiler or a suitable reservoir.
By adjusting the chamber a in a longitudinal direction, the openings d and e
arranged in the same may be mutually adjusted against the corresponding openings
made in the case b, by which means the passage for the steam may be increased
or diminished, or the amount of heat conveyed to the stove may be regulated.
This adjustment of the chamber is preferably effected by means of a worm g and
crank, which engages in a worm wheel connected with the chamber a, Figures 4 and 6;
any other suitable device for adjusting the chamber a may however be employed.
A screw nut i arranged in the case 6 limits the drawing out of the chamber a.
As may be seen the steam passes out through the same small space in which
the condensed water flows back without any noise or other disturbance thereby
resulting.
Having now particularly described and ascertained the nature of the said inven-
tion 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-
1. In steam stoves which have a common steam inlet and condensed water outlet
pipe, the regulation of the heat by means of a chamber a inserted in the pipe c
situated in a case b so as to be longitudinally adjustable, which chamber allows the
steam to flow into the stove D through an opening d in its top, and the condensed
water to flow away through the opening e in the bottom of the same.
2. In a regulating device such as specified in Claim 1, the arrangement of a
piece of tube which establishes a communication between the tube c and the
interior of the stove for the object of forming a condensed water column round the
same and for overcoming the pressure existing in the chamber a.
Dated this 28th day of September 1892.
WM. P. THOMPSON & Co.,
Agents for the Applicant.