Improvements in and connected with Sight-feed Lubricators.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Sight-feed Lubricators.
I, JAMES LIONEL GRANDISON, of Allen Street, Lower Broughton, Manchester, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to be
as follows:
This invention has for its object to render sight-feed lubricators specially applicable
for colliery winding engines locomotives, motor-cars and the like, by preventing the
sudden rush of oil through the sight-feed glass which occurs when the steam pressure
is suddenly taken off the outlet or oil supply of the engine. For instance in the case
of a locomotive, when running from a level road down an incline, the steam to the
inlet side of the lubricator is taken from the boiler and outlet to the valve chest or
steam pipe and the pressure being then suddenly released the oil rushes up and
through the sight-feed glass thereby fouling it and carrying away a portion of the
water.
To this end my invention consists in combining with the outlet of the sight-feed
glass a valve adapted to cut off communication between the latter and the steam
supply pipe or valve chest when the steam pressure is suddenly taken off the outlet
or oil supply of the engine.
The said valve may consist of a casing formed in two parts and having screwed
therein near the valve seat a bridge or ring in which the stem of the valve is guided
which is screw threaded at its end and receives a cup shaped disc suitably guided in
the valve casing. Between the said bridge or ring and cup shaped disc, a spring is
employed which when the steam pressure in the lubricator is normal keeps the valve
off its seat and when the pressure is suddenly released will allow the valve to close
and thus cut off communication with the sight-feed glass.
Dated this 12th day of January 1897.
Improvements in and connected with Sight-feed Lubricators.
I, JAMES LIONEL GRANDISON, of Allen Street, Lower Broughton 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 has for its object to render sight-feed lubricators specially applicable
for colliery winding engines locomotives, motor-cars and the like, by preventing the
sudden rush of oil through the sight-feed glass which occurs when the steam pressure
Posing 8d]

page_text: is suddenly taken off the outlet or oil supply of the engine. For instance in the case
of a locomotive, when running from a level road down an incline, the steam to the
inlet side of the lubricator is taken from the boiler and from the outlet to the valve
chest or steam pipe, and the pressure being then suddenly released, the oil rushes up
through the sight-feed glass, thereby fouling it and carrying away a portion of the
water,
To this end my invention consists in combining with the outlet of the sight-feed
glass a valve adapted to cut off communication between the latter and the steam
supply pipe or valve chest when the steam pressure is suddenly taken off the outlet
or oil supply of the engine.
And in order that my invention may be more fully understood I have caused to be
appended hereunto one sheet of drawings marked with letters of reference indicating
like parts in the various figures, Fig. 1 showing the said valve applied to a sight-feed
lubricator of a colliery engine and Fig. 2 being a longitudinal section at an enlarged
scale of the valve itself.
In carrying out my invention and referring to Fig. 1, I couple the said valve A with
the pipe a leading from the sight-feed glass b of the lubricator to the steam supply
pipe cor valve chest d in any well known manner. Referring to Fig. 2, the said valve
may consist of a casing formed in two parts e & f screwed together, the part e being
formed with a valve seat e¹ and having near thereto a bridge or ring g screwed in, in
which the stem h¹ of the valve face his guided. The valve stem h¹ is screw threaded
at its one end and receives a cup shaped disc i suitably guided in the valve parte of the
casing. Between the said bridge or ring g and cup shaped disc i, a spring k is
employed which, when the steain pressure in the lubricator is normal, keeps the
valve h, h¹ off its seat e¹, as shown in the drawing, and when the pressure is suddenly
released will allow it to close and thus cut off communication with the sight-feed
glass of the lubricator.
The valve stem h¹ is also formed with a square 2 which facilitates the turning
of the same for the purpose of regulating the tension of the spring k as may be
required.
Having now particularly described and ascertained the nature of this Inven-
tion and in what manner the same is to be performed, I declare that what I
claim, is-
1st. In and connected with sight-feed lubricators for colliery winding engines
locomotives, moto-cars and the like the employment of a valve A in the pipe a leading
from the sight-feed glass b to the steam supply pipe c or valve chest d of the engine,
adapted to cut off communication between the same when the steam pressure is
suddenly taken off the outlet or oil supply of the engine, all substantially as set
forth.
2nd. A valve, applied in the manner and used for the purpose as specified in the
preceding claim, consisting of a casing formed in two parts, the part e of which has a
seat e¹ on which operates the valve face h of the valve stem h¹ which stem is guided
in a bridge or ring g screwed into the part e and placed under the influence of a
spring which has a tendency of raising the valve face off its seat and the tension
of which can be regulated, all substantially as set forth.
Deted this 19th dor of October 1897.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.