Improvements in Valves for Boilers and the like.
Year: 1893

page_text: Date of Application, 8th Dec., 1893
Complete Specification Left, 8th Sept., 1894-Accepted, 13th Oct., 1894
Improvements in Valves for Boilers and the like.
I, JOHNSON MILLS, of Victoria Buildings, Deansgate Manchester, in the
County of Lancaster Engineer do hereby declare the nature of this invention to be
as follows:-
:-
This invention relates to valves such as are fitted externally to boilers and
the like.
The object of this invention is to construct a valve that will be capable of safely
resisting exceedingly high pressures, particularly in reference to valves that are
employed in combination with high pressure steam boilers, also for use in con-
nection with hydraulic plant, compressed air plant, and other appliances where
great internal pressure is exerted.
I effect this object by dispensing with cast metal valves for high pressure steam
boilers and like uses, and in lieu thereof, I construct a valve such as is represented
in section on the accompanying sheet of drawings, with the flanges and like
portions formed of stamped or pressed steel or iron.
Referring to the form of valve shown on drawing, the upper part or cover b, and
the lower part c for the valve seating, are obtained by stamping the aforesaid upper
and lower parts from a bloom of steel or iron to the form or shape required; the
flanges g and are also pressed from a bloom of steel or iron to the required size
and shape. The case a is formed of a seamless steel tube, with the nozzle a¹
welded or rivetted thereto. By these means a valve is constructed that will be
capable of resisting exceedingly high pressures whether of steam, water or other
like forces.
Dated this 7th day of December 1802
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Valves for Bollers and the like.
I, JOHNSON MILLS, of Victoria Buildings, Deansgate, Manchester, in the
County of Lancaster, 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:-
This invention relates to valves such as are fitted externally to boilers and
the like.
The object of this invention is to construct a valve that will be capable of safely
resisting exceedingly high pressures, particularly in reference to valves that are
employed in combination with high pressure steam boilers, also for use in connection
with hydraulic plant, compressed air plant, and other appliances where great internal
pressure is exerted.

page_text: I effect this object by dispensing with cast metal valves for high pressure steam
boilers and like uses, and in lieu thereof I construct a valve such as is herein-
after described, and as illustrated in the accompanying sheet of drawings, in
which
Fig. 1 represents a side view of a valve constructed according to my invention,
Fig. 2 is a section elevational of the same;
Fig. 3 is a transverse section of the upper part or cover of said valve, and
Fig. 4 is a plan of the same:
Fig. 5 is a transverse section, and Fig. 6 a plan of the valve seating.
In these views similar letters refer to similar parts.
In this invention 1 construct a valve with the flanges and like portions formed of
stamped or pressed steel or iron.
Referring to the form of valve shown on the accompanying drawing, the upper
part or cover represented in Figs. 3 and 4, and the lower part c for the valve
seating represented in Figs. 5 and 6 are obtained by stamping the aforesaid upper
and lower parts from a bloom of steel or iron to the form or shape required, by
means of suitable dies in either a drop or a steam hammer. The flanges 9 and h
are also in like manner stamped or pressed from a bloom of steel or iron to the
required size and shape.
The case a is formed of a seamless steel tube with the nozzle a¹ welded or rivetted
thereto.
The herein before described flanges, covers and seatings, are fitted on and rivetted
to the case a in the manner shown in Figs. 1 and 2. By these means a valve is
constructed that will be capable of resisting exceedingly high pressures.
The contour or outline of the several parts constituting the said valve may be
varied to suit requirements without departing from the nature and spirit of my
invention.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
A valve that is employed in connection with high pressure steam boilers,
hydraulic plant, compressed air plant, and other appliances having internal
pressure, constructed with the flanges and like parts formed of stamped or pressed
steel or iron in combination with a case formed from a seamless steel tube in
the manner and for the purpose substantially as herein before described.
Dated this 7th day of September 1894.
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicant.