IMPROVEMENTS IN LUBRI- CATING APPARATUS, AND THE APPLICATION OF THE SAME TO MACHINERY
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by William Simpson and John
Hutton at the Office of the Commissioners of Patents, with their
Petition, on the 3rd December 1868.
We, WILLIAM SIMPSON and JOHN HUTTON, both of the Town of
Northampton, in the County of Northampton, Engineers, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN LUBRI-
CATING APPARATUS, AND THE APPLICATION OF THE SAME TO MACHINERY," to be as
follows:-
Our Invention relates to the class of lubricators in which oil is caused
by the motion of the machinery to be lubricated to flow from a reservoir
down a tube, in which a small rod is loosely fitted, and our said
Invention consists in the improvements herein-after described whereby
the said lubricators are rendered capable of application, not only to
revolving shafts, but also to rubbing surfaces in general, such as
guides and guide bars, whether they be horizontal, vertical, or inclined.
Our improvements in lubricating apparatus consist in applying to
the inner end of the rod herein-before referred to (herein-after called
the valve spindle) a conical head or valve, and in forming on the inner

page_text: end of the tube through which the said spindle passes a correspondingly
shaped valve seat, against which the said valve fits when the lubricator
is not in action. We apply the conical valve to its spindle by cutting
a screw on the latter which passes through a female screw in the former,
so as to allow of the adjustment of the said valve on its spindle as
required.
In applying lubricating apparatus thus constructed to horizontal guide
bars we insert the outer end of the tube herein-before referred to in a
hole bored through the upper guide bar, so that the projecting or outer
end of the valve spindle shall when in its lowest position be rather
lower than the upper face of the guide block which slides between the
said bars, and we make in the said face inclined grooves or gutters which
slope upwards towards the middle of the said block, so that as the latter
passes backwards and forwards under the valve spindle the valve is
raised and lowered by the said grooves and allows a small quantity of oil
to pass down the tube, which oil after lubricating the upper face of the
guide block flows on to the lower guide bar. When the guide block is
not in contact with the valve spindle the valve drops on to its seat and
cuts off the supply of oil, thus preventing waste.
Lubricating apparatus constructed as above described is applicable to
the lubrication of horizontal surfaces.
In constructing lubricating apparatus for the lubrication of vertical
or inclined surfaces we make the neck of the reservoir (in which the
tube carrying the valve spindle is inserted) at such an angle to the said
reservoir that the latter shall be in a vertical position when the lubricator
is fixed to the machinery to be lubricated, and we apply to the valve a
spring by which the said valve is forced against its seat when not acted
upon by the inclined grooves in the moving part of the machinery. In
lubricating vertical guide bars we fix a lubricator to each bar and make
inclined grooves on both sides of the guide block.