I■.. PROVEMENTS IN THE CONSTRUCTION OF APPARATUS CAPABLE OF BEING EMPLOYED AS AN AUTOMATIC GOVERNOR OR STEAM REGULATOR, STEAM GUAGE, SAFETY VALVE, AND HIGH STEAM ALARM, AND ALSO FOR REGULATING THE FLOW OR PRESSURE OF AIR, . GAS, WATER, AND OTHER FLUIDS
Year: 1875

page_text: PROVISIONAL SPECIFICATION left by John O'Connell Cave at the
Office of the Commissioners of Patents, with his Petition, on the
14th January 1875.
I, JOHN O'CONNELL CAVE, of Weston-super-mare, in the County of
Somerset, do hereby declare the nature of the said Invention for "I■..
PROVEMENTS IN THE CONSTRUCTION OF APPARATUS CAPABLE OF BEING EMPLOYED AS
AN AUTOMATIC GOVERNOR OR STEAM REGULATOR, STEAM GUAGE, SAFETY VALVE, AND
HIGH STEAM ALARM, AND ALSO FOR REGULATING THE FLOW OR PRESSURE OF AIR, .
GAS, WATER, AND OTHER FLUIDS," to be as follows:
:
"
This Invention relates to certain combinations and arrangements of
mechanism for effecting the purposes herein-after mentioned.
A piston is arranged to work in a cylindrical valve, the external part
of the piston rod being loaded by means of a spring or dead weight, or a
combination of both, and adjusted by any known means to suit any
desired purpose; the other or internal end of the piston rod is attached
to a sliding cover or door. The variable pressure of the steam in the
boiler regulates the pressure thereof on its way to the engine (by
increasing or reducing its flow), and acts in a direct manner on or

page_text: against the piston, the sliding cover or door moving with the piston rod
and piston, according to the varying pressure in the boiler, and thus
more or less opens or closes the steam way to the engine. Steam can
thus be automatically regulated and caused to keep or retain any definite
and steady pressure required.
E
The cylinder before mentioned is caused to act as a safety valve by
having an orifice or aperture formed therein at a suitable distance behind
the piston, so that when the latter is forced back, and the inner edge
thereof clears the edge of the orifice, the steam escapes; or such orifice
or aperture may be situated behind or underneath the sliding cover or 1
door.
A graduated metallic rod is fitted outside the goverñor, and an arm or
needle mounted on the external part of the piston rod to indicate the
exact pressure of steam in the boiler.
The steam which escapes through the before-mentioned orifice or 1
aperture can be employed to act on a whistle or other instrument of
sound, for the purpose of giving an alarm of "high steam" having been
attained.
The apparatus, when employed as a "governor" or "steam regulator,"
is fitted or fixed to the steam pipe, between the boiler and the engine in 2
any suitable position and direction, and can be so constructed as to have
its piston facing or at any desirable angle to the direction of the steam
coming from the boiler.
The sliding cover or door before mentioned may be of any shape, but
by preference should be of a cylindrical section, closely fitting the 2
interior of the cylinder of the apparatus, and, instead of a sliding cover
or door, a disc may be used, the same being pivoted and attached to the
internal part of the piston rod.
The main and principal object of this Invention is the production of an
automatic governor or regulator, but it will bo manifest to persons con- 3
versant with such matters that it is applicable to the several other
purposes herein-before mentioned.