lubricators
Year: 1887

page_text: I WILLIAM BRIERLEY of Borough Brass Works, Rochdale in the County of
Lancaster Brass Founder 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 :—
My invention relates to improvements in lubricators and chiefly to such class of
lubricators as is described in the specification of former Letters Patent granted to me
April 7th A.D. 1884 No. 6057, and which said patent embodies some features in
common with this my said invention. The invention which forms the subject of the
said Letters Patent relates to sight feed lubricators used for lubricating steam engine
cylinders in which the lubricant-being of a heavy bodied nature-is effectually
liquified by means of condensed steam and is then discharged through a glass tube
into the cylinder in drops or jets, a check or vacuum valve is employed to intercept
the oil passage and the passage leading to the cylinder, and hollow tubes are employed,
the purposes of these devices being fully described in the said specification.
My present improvements are illustrated in the accompanying sheet of drawings
in which fig. 1. is a vertical longitudinal central section of my improved lubricator,
shewing a position of the working parts when in operation.
Fig. 2. is a sectional view of the oil and steam chambers with their respective oil
and steam orifices.
According to my present invention I firstly modify the lubricator described in
specification No. 6057, A.D. 1884, and secondly, I combine with this my invention
some of the features contained in my former patent, for in modifying I provide
chambers a and b. in conjunction with oil and steam orifices c. d. and e, by means of
such an arrangement of oil and steam orifices and chambers I am enabled to place
the sight tube ¹ in close proximity to the oil cup, h. and to dispense with the
condenser described and illustrated in my former specification and drawings. At the
lower part of the lubricator which part is to be connected to a steam engine cylinder
and in the thoroughfare f. I introduce a check or vacuum valve g. which intercepts
the orifice e. and the interior of the engine cylinder, such valve prevents the lubricant
from being withdrawn from the cup h. in case the orifice c. is not closed or covered
by the extremity of the valve spindle i, at a time when the lubricant is not required
Prine G21

page_text: to
pass
into the engine cylinder, the functions of such à valve as . are also referred
to in my previous specification No. 6057 A.D. 1884. The construction of this valvo
consists of a cover g. and spindle g', a spring g being inserted between the cover g,
and the fixed cross piece g³, the office of the spring being to keep the valve cover
above its seat or open, see Fig. 1; upon the occurrence of a vacuum, such as may
be caused by, the stoppage of the engine, the cover g is caused to close the opening g²,
the spring being compressed.
If desired I may introduce into the oil cup, h. any convenient number of tubes
having their surfaces straight or corrugated, I have shewn the application of such
tubes in the drawings hereunto and marked k. and 7. by the employment of such
tubes obtain a greater area of surface for condensing purposes, than could be
obtained without the employment of such tubes in the cup ; it may be necessary in
some cases to employ such tubes especially when steam of high temperature is admitted
into the cup. I, the functions of such tubes are referred to in my former specification,
and such tubes are therein described.
I will now proceed to describe the operation of my invention, assuming the
lubricator to be attached to a steam engine cylinder.
The valve spindle i being rotated by means of wheel it so as to move end wise from
its seat, p, allows steam from the orifice c. to pass through the annular space, (formed
between the surface of the extremity of the valve spindle and the sides of the
chamber a) into the orifice d, and out at the extremity a of the tube a into the oil
cup, h, the lubricant, being caused to pass in drops by means of suction caused by the
action of the piston in the engine cylinder through nozzle which is screwed into
the lower part of the cup so as not to project above the surface of the lower side of
the interior of the oil cup, the sight tube a', the orifice e, into the enclosed chamber b,
one side of such chamber being formed by a stuffing box from thence the lubricant
is caused to pass through the orifice c leading out of the chamber a, through the
valve opening g' into the interior of the engine cylinder or part desired to be
lubricated.
The extremity of the valve spindle being formed so that when the spindle i shall
be caused to move slightly from its seat p, a small annular space u shall be formed
between its surface and the walls or sides of the chamber a, the said annular space
being for the admission of steam, and such space being opposite to an oil chamber; a
suitable area or enclosure being provided by means of a chamber band opposite to
an annular space or steam orifice : these the above mentioned devices form or
constitute the essence of this my said invention, such details being observed and
practically carried into effect fulfils the conditions of an efficient lubricator.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The lubricator constructed substantially as described in referrence to fig. 1 of the
drawings for the purpose specified.
2. A lubricator such as shewn in the drawings having an oil chamber with an
orifice leading into a sight tube opposite to a steam orifice, a steam chamber with
orifices leading therefrom opposite to an oil chamber, a valve spindle fitting into the
steam chamber, hollow tubes, a check or vacuum valve, and a stuffing box sub-
stantially as and for the purposes herein fully set forth and described in the annexed
drawings.