Improved Means applicable for Use in the Distribution of Steam for Heating Purposes.
Year: 1898

page_text: Date of Application, 10th Jan., 1898-Accepted, 26th Feb.,
1898
COMPLETE SPECIFICATION.
Improved Means applicable for Use in the Distribution of Steam
for Heating Purposes.
We, JULES GROUVELLE and HENRI ARQUEMBOURG, trading as La Société Jules
Grouvelle et H. Arquembourg, of 71, Rue du Moulin-Vert, Paris, in the French
Republic, Manufacturers, 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 means applicable for use in the distribution of steam for
heating purposes, and has special reference to the construction of a cock, or controlling
device, for regulating the supply of steam to each heating coil, or equivalent apparatus,
with the object of preventing any such apparatus receiving more steam at a pre-
determined constant pressure than it is capable of condensing in the coldest weather
to be anticipated; the device being at the same time both simple and reliable.
Referring to the accompanying drawings, Fig. 1 is a vertical section of a cock
constructed according to our invention, Figs. 2 and 3 being respectively a side
elevation and a plan of one of the parts hereinafter more particularly referred to.
Within the partitioned casing A is screwed, upon a suitable seating, a plug a, of
reduced oritice (shown detached in Figs. 2 and 3) formed with a central perforation, a¹,
partly of cylindrical shape and partly in the form of a truncated cone, while the upper
surface of the said plug a is provided with a notch a², wherein a tool may be readily
engaged, when it is desired, either to fit the plug in position or to remove it. The
plug a is one of a series of such plugs all interchangeable, and in which the angle at
the apex of the cone pertaining to the truncated portion of the central perforation, a¹,
is constant, whereas the diameters of the circular bases of the said truncated portion
vary within fractions of millimetres. It follows herefrom that the diameter of the
cylindrical portion of the central perforation, a', (that is to say the dianieter of the
aperture available for the passage of steam) also varies within fractions of millimetres,
together with the diameter of the smallest of the before mentioned circular bases.
In the axial line of the central perforation, a¹, within a suitably constructed stuffing-
box, a³, is arranged a spindle at screw-threaded for part of its length at a very gently
sloping pitch, and having a hand-wheel a mounted upon its upper part, while its
lower portion terminates in a cone aº, the apex of which presents the same constant
angle as that pertaining to the truncated portion of the said central perforation, a¹;
so that the said cone a, when sufficiently lowered, may exactly fit the outline of the
said truncated portion, whichever of the interchangeable plugs may be in use.
By these means, when, as the result of preliminary trial, a particular plug has been
selected whose reduced orifice corresponds to the supply of steain required for a given
heating apparatus, it will be seen that, if the cone a be fully raised, the passage
available for steam is that which corresponds to the maximum amount of such steam
that can be condensed by the said heating apparatus; also that, when the said
cone is lowered more or less, the available passage referred to is reduced to more
or less narrow limits, and may indeed be entirely closed if desired.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we claim :-
1. The improved means applicable for use in connection with the distribution of
steam for heating purposes, arranged and operating substantially as described with
reference to the accompanying drawings.
2. The improved device constructed substantially as herein described, and
comprising a partitioned casing adapted to receive any one of a series of inter-
changeable plugs, each of the latter having a passage partly of cylindrical shape and
partly in the form of a truncated cone; the several plugs differing from each other
in respect of sectional area of passage, and an adjustable spindle, formed with a conical
end, serving, in conjunction with any one of the said series of plugs, to regulate and
control the passage of steam.