Improvements in and Applicable to Steam Cooking Apparatus.
Year: 1890

page_text: Date of Application, 3rd May, 1890-Accepted, 7th June, 1890
COMPLETE SPECIFICATION.
Improvements in and Applicable to Steam Cooking Apparatus.
I, MICHAEL MARY BROPHY, of the firm of James Slater & Co., 251, High Holborn,
in the County 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 steam cooking appartus of the kind in which a series of
steaming chambers are employed, each of which communicates with a common box
into which the steam and water of condensation from the said chambers pass.
In using apparatus of this kind, when any one of the said chambers is shut off from
the steam supply in order to allow the cooked substance to dry more or less before
being removed from such chamber, a certain quantity of steam finds its way into
the said chamber from the said box, thereby tending to prevent the drying.
The object of my invention is to obviate this disadvantage, and to this end I
provide a valve in connection with each steaming chamber which valve, while allowing
of the passage of the water of condensation into the box, prevents the return of any
steain from the said box.
To enable my invention to be fully understood I will describe how it can be carried
into practice by reference to the accompanying drawing, in which
Figure 1 is a sectional elevation of a steam cooking apparatus with three steaming
chambers and having valves constructed and applied according to my invention.
Figures 2 and 3 are respectively a sectional elevation and sectional plan also
shewing the application of one of iny valves but drawn to a larger scale.
Similar reference letters indicate similar parts throughout the drawing.
a, a, a are the steaming chambers, bb, b the steam inlet pipes and c is the box into
which the waste steam and water of condensation flow from the chambers a, a, a
through pipes d,d, d. e, e, e are the valves, one of which is applied to each of the
pipes d, d, d within the box c. Each of these valves, as shewn most clearly in
Figures 2 and 3, is formed with a body provided with an opening and a flag g
which is hinged to slotted projections h, h on the body and bears against a seating i.
A weight also hinged to the projections h, h serves to normally keep the flap pressed
against the said seating.
By this arrangement it will be seen that if the steam be shut off from any of
the steaming chambers a, a, a, the flap valve e in connection with such chamber, while
allowing the waste steam and water of condensation to pass into the box will
prevent the return of any steam from the said box to the said chamber.
It will be obvious that instead of the weight j I can use a spring without depart-
ing from the nature of my invention.
Having now particularly described and ascertained the nature of my said invention
and in what manner the samo is to be performed I declare that what I claim is :-
(1.) In steam cooking apparatus of the kind hereinbefore described the use of
valves which, while allowing the exit of the waste steam and water of condensation
from the steaming chambers, prevent the return of any steam thereto, substantially
as described.
(2.) The manufacture and use of steam cooking apparatus provided with valves,
substantially in the manner, and for the purpose, described.
Dated the 3rd day of April 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.