Improved Combination of Steam Reducing Valve, Blow Off, and Indicator.
Year: 1893

page_text: Date of Application, 12th Oct., 1893
Complete Specification Left, 12th July, 1894-Accepted, 18th Aug.. 1894
PROVISIONAL SPECIFICATION.
Improved Combination of Steam Reducing Valve, Blow Off, and
Indicator.
1, WILLIAM SAMUEL LAYCOCK of Ranmoor, in the City of Sheffield,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention consists in the novel combination of known appliance for admitting,
reducing, controlling indicating and blowing off at over pressure, steam in its
passage from a locomotive or stationary boiler to a storage heating apparatus for
warming railway carriages and for other purposes.
It consists of an inlet valve with means by which it may be secured to a boiler
or boiler connection and a wheel or handle for opening and closing the valve, so that
live steam may pass into a reducing valve of improved or ordinary construction
with a regulating spring and indicator to show the outlet steam pressure at which
it is desired to set the valve, and where it may be locked to prevent tampering,
also having in combination a blow off valve arranged to blow off when the highest
reduced pressure is exceeded from any, cause.
Upon the outlet a steam pressure gauge is fixed to indicate to sight the actual
reduced pressure of steam passing into the pipes and storage heater.
Dated the 10th day of October 1893.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
COMPLEIE
SPECIFICATION.
Improved Combination of Steam Reducing Valve, Blow Off, and
Indicator.
I, WILLIAM SAMUEL LAYCOCK of Ranmoor, in the City of Sheffield,
Manufacturer 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 consists in the combination of appliances for admitting, reducing
the pressure blowing off excess, and indicating the pressure of steam in its passage
from a locomotive or from a stationary steam boiler to a storage heating system for
warming railway carriages, and other similar purposes.
The arrangement of the combined appliances which I prefer is shown in the
annexed sheets of drawings, in which
Fig. 1, gives an elevation of the complete apparatus as seen from the front.
Fig. 2, the same elevation with the inlet valve removed, and showing the interior.
Fig. 3, side elevation partly in section, and the indicator removed.
It consists of an inlet valve A, operated by the hand wheel B, arranged to admit
and shut off steam from the opening C, which communicates directly with the
boiler to which it is attached by means of bolts through the flange D.
The steam so admitted fills the chamber E, and acts at once upon the reducing
and blow off valve F, which is constructed with a spring G, capable of adjustment
by means of the screw H, upon which it bears and by which the amount of pressure
exerted by the valve F, upon its seat I, can be regulated.
The chamber E, also communicates by means of the pipe J, with the indicator or
pressure gauge K, which may be of any preferred make or construction.

page_text: Steam is conveyed to the storage heaters by the pipe L, and M, is the blow off
or escape pipe for steam passing through the valve F.
It will thus be seen that if the live steam exceeds the desired pressure it will
escape through the valve F, thus reducing the pressure in the pipe L, and the
storage heaters, to the normal pressure which will be indicated by the steam
pressure gauge K.
I do not bind myself to the exact form of the combination as illustrated, as this
may be varied, but
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is performed I declare that what I claim, is :
The combination of appliances forming the apparatus for admitting and
regulating steam to the storage heaters of railway vehicles, and other heaters,
substantially as herein before described and illustrated.
Dated the 10th do T11001
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.