IMPROVEMENTS IN APPARATUS FOR FORCING LUBRICATING MATTER INTO ENGINE CYLINDERS AND FOR INJECTING FLUIDS INTO OTHER VESSELS UNDER PRESSURE."
Year: 1880

page_text: LETTERS PATENT to John Addy Hopkinson and Joseph Hopkinson, both of the
Firm of J. Hopkinson & Co., of Huddersfield, in the County of York, Engineers,
for an Invention of "IMPROVEMENTS IN APPARATUS FOR FORCING LUBRICATING
MATTER INTO ENGINE CYLINDERS AND FOR INJECTING FLUIDS INTO OTHER
VESSELS UNDER PRESSURE."
PROVISIONAL SPECIFICATION left by the said John Addy Hopkinson and
Joseph Hopkinson at the Office of the Commissioners of Patents on the 8th
May 1880.
JOHN ADDY HOPKINSON and JOSEPH HOPKINSON, both of the Firm of
J. Hopkinson & Co., of Huddersfield, in the County of York, Engineers.
IMPROVEMENTS IN APPARATUS FOR FORCING LUBRICATING MATTER INTO ENGINE
CYLINDERS AND FOR INJECTING FLUIDS INTO OTHER VESSELS UNDER PRESSURE."
64
Our Invention relates to apparatus for lubricating cylinders or other vessels
under pressure by injecting or forcing into the same oil, tallow, or other suitable
matter.
The said apparatus has a reservoir or receptacle for the oil or other lubricant,
and is provided inside the same with a ram or force pump, which has its valves so
arranged that the lubricant will by the action of the said pump be received therein
and forced or injected into the said cylinder or vessel without permitting the
entrance of steam from the same into the lubricator.
The said pump is operated by means of a peculiar cam arrangement, that is to
say, the said reservoir or receptacle is provided inside with a cross shaft wherein is
fixed a cam or projection. The upper portion of the pump rod or ram extends up
beyond the said shaft, and is formed to enclose or bridge the same; the shaft
revolves within this enclosing portion of the said ram, and the latter is provided
with shoulders whereon the said cam or projection acts to move the ram to and fro.
As the shaft revolves it therefore causes the said ram to ascend at one portion of
the shaft's revolution, during which time the pump is receiving or drawing in the

page_text: oil or other matter, while at another portion of the said shaft's revolution the ram
descends and forces or injects the contents of the pump into the cylinder.
For actuating the said shaft we employ a ratchet and pawl arrangement or other
suitable devices, which will enable the attendant to regulate the number of the
strokes of the said ram, and consequently the quantity of oil or other lubricant
supplied to the cylinder.
To insure the proper action of the lubricator we provide the pump with two
delivery valves. These two valves effectually prevent the entrance of steam to the
lubricator.
This improved apparatus or lubricator is exceedingly simple; it has no springs or
complicated mechanical devices, whilst its action in raising and lowering the
plunger is positive and direct.
Another improvement which is embraced in our Invention consists in means for
discharging the air which may have accumulated in the space below the pump. As
such air if not discharged might render the action of the pump plunger ineffectual
we provide the apparatus with a small outlet aperture closed by a plug or
otherwise. By the opening of this aperture the attendant can at any time relieve
the lubricator of the pent up air, and so cause it to resume its proper action when-
ever such may have been impaired.
Our Invention may be applied or adapted for forcing liquid into steam boilers to
act upon the water for cleansing the same and preventing their incrustation, and
for forcing liquid into other vessels for various purposes.
In some instances we may find it desirable to arrange the pump outside of the
reservoir or receptacle which contains the liquid to be forced into the boiler or other
vessel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Addy Hopkinson and Joseph Hopkinson in the Great Seal
Patent Office on the 8th November 1880.
JOHN ADDY HOPKINSON and JOSEPH HOPKINSON, both of the Firm of
J. Hopkinson and Co., of Huddersfield, in the County of York, Engineers.
"IMPROVEMENTS IN APPARATUS FOR FORCING LUBRICATING MATTER INTO ENGINE
CYLINDERS AND FOR INJECTING FLUIDS INTO OTHER VESSELS UNDER PRESSURE."
Our Invention relates to apparatus for lubricating cylinders or other vessels
under pressure by injecting or forcing into the same oil, tallow, or other suitable
matter.
The said Invention is illustrated in the accompanying Drawing, in which,
Figure 1 is an exterior elevation partly broken away to shew the interior of the
said apparatus.
Figure 2 is a vertical central section of the same.
Like letters indicate the same parts in both Figures.
The said apparatus has a reservoir or receptacle a for the oil or other lubricant,
and is provided inside the same with a force pump b, which has its valve so
arranged that the lubricant will by the action of the said pump be received therein
and forced or injected into the cylinder or vessel to be lubricated without per-
mitting the entrance of steam from the same into the lubricator.
The said pump is operated by means of a peculiar cam arrangement, that is to
say, the reservoir or receptacle a is provided inside with a cross shaft c, whereon is
fixed a cam, tappet, or projection d. The upper portion of the pump plunger or
ram e extends up beyond the said shaft, and is formed at el to enclose the said
shaft and projection, as shewn in Figure 1; the shaft c revolves within this enclosing
portion e' of the said ram or plunger, and the said enclosing portion of the ram is
provided with shoulders whereon the cam or projection d acts to move the ram
or plunger to and fro; therefore as the shaft o revolves it causes at one portion of
its revolution the ram or plunger e to ascend, during which time the pump is
receiving or drawing in the oil or other matter, while at another portion of the
said shaft's revolution the ram descends and forces or injects the contents of the
pump into the cylinder or other vessel to which our apparatus is attached.
For actuating the said shaft we employ a ratchet and pawl arrangement, as
shewn at f, or other suitable devices, which will enable the attendant to regulate
the number of the strokes of the said ram, and consequently the quantity of oil or
other lubricant supplied to the cylinder.
The pump b is preferably screwed into the orifice in the bottom of the said
reservoir, as shewn; it is provided with a suction or entrance valve at g, and with
a delivery valve at h. One delivery valve may be sufficient in some cases, but to
ensure the proper action of this lubricator we provide the pump with two delivery
valves, that is to say, we arrange an extra delivery valve i at the lower end of the
neck a¹ of the vessel a; these two valves h, i, effectually prevent the entrance of
steam to the lubricator from the cylinder or other vessel to which the same is
attached.
This improved apparatus or lubricator is exceedingly simple; it has no springs
or complicated mechanical devices, whilst its action in raising and lowering the
plunger is positive and direct..
Another improvement embraced in our Invention consists in means for dis-
charging air or steam which may have accumulated in the space between the
pump plunger and the lower valve, as such air or steam if not discharged might
render the action of the pump-plunger ineffectual. For this purpose we provide the
apparatus with a small outlet aperture j closed by a plug k or otherwise. By the

page_text: opening of this aperture the attendant can at any time relieve the lubricator of
the pent-up air or steam, and so cause or allow the said lubricator to resume ita
proper action whenever such may have been arrested or impaired.
Our Invention may be applied or adapted for forcing liquid into steam boilers to
act upon the water for cleansing the same and preventing their incrustation, and
for forcing liquid into other vessels for various purposes.
In some instances we may find it desirable to arrange the force pump outside of
the reservoir or receptacle which contains the liquid to be forced into the boiler or
other vessel, but in all cases the devices for operating the pump plunger and the
arrangement of the valves will be substantially the same.
Having thus fully described our said Invention and shewn how the same may
be conveniently and advantageously carried into practice, we wish it understood
that we claim,-
The apparatus comprising the force-pump and the peculiar mechanism for
operating the plunger thereof in combination with the oil cup or receptacle, and
arranged either inside or outside of the same, and either with or without the means
for discharging the steam or air from the space below the plunger, all substantially
as and for the purpose specified.
In witness whereof, I, the said Joseph Hopkinson, for myself and on behalf
of the said John Addy Hopkinson, have hereunto set my hand and seal, this
Eighth day of November, in the year of our Lord One thousand eight
hundred and eighty.
JOSEPH HOPKINSON. (L.S.)