AN IMPROVED SLIDE VALVE AND CYLINDER LUBRICATING APPARatus FOR LOCOMOTIVES AND STEAM ENGINES
Year: 1873

page_text: LETTERS PATENT to Frank Wirth, of the Firm of Wirth & Comp.,
Patent Agency, at Frankfort-on-the-Main (Germany), for the Inven-
tion of "AN IMPROVED SLIDE VALVE AND CYLINDER LUBRICATING APPARatus
FOR LOCOMOTIVES AND STEAM ENGINES."-A communication from John
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the
Office of the Commissioners of Patents, with his Petition, on the
19th July 1873.
I, FRANK WIRTH, of the Firm of Wirth & Comp., Patent Agency, at
Frankfort-on-the-Main (Germany), do hereby declare the nature of the
said Invention of "AN IMPROVED SLIDE VALVE AND CYLINDER LUBRICATING
APPARATUS FOR LOCOMOTIVES AND STEAM ENGINES," to be as follows:-
This Invention has for its object the construction of a lubricating cup
which is applicable to locomotive and other steam engines, and is capable
of supplying the requisite quantity of lubricating material to the cylinder
and slide valve of a steam engine by a single manipulation without

page_text: stopping the engine, and consists mainly of a hollow plug cock, the
plug of which is divided into two compartments with orifices which in a
certain position communicate with passages in the cock body leading to
the interior of the cup or reservoir containing the supply of lubricating
material, and each of which compartments is further provided with a
passage which in the same position of the plug communicates with an
air pipe leading to the top of the cup herein-before mentioned; in this
position of the plug the lubricating material flows down and fills the
two compartments. The body of the cock has three other passages
formed in it, the first two corresponding with the orifices in the com-
partments of the plug and leading to the cylinder and valve box or
other part requiring to be lubricated; and the third passage corresponds
with the air passage in the plug, and is in communication with the
steam space of the boiler, so that as the plug is turned round the
pressure of the boiler is admitted into both compartments of the plug
and the lubricating material is forced down the pipes to its destination
or the parts requiring to be lubricated. When the plug is turned back
for the purpose of replenishing its compartments with lubricating
material the steam contained in them first expands and escapes up the
air pipe, so keeping such air pipe clear and at the same time preventing
the lubricant becoming congealed in frosty weather.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Frank Wirth in the Great Seal Patent Office on
the 3rd January 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANK
WIRTH, of the Firm of Wirth and Company, Patent Agency, at Frank-
fort-on-the-Main (Germany), send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of July, in the year of
our Lord One thousand eight hundred and seventy-three, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Frank Wirth, Her special licence
that I, the said Frank Wirth, my executors, administrators, and
assigns, or such others as I, the said Frank Wirth, my executors,

page_text: .
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
SLIDE VALVE AND CYLINDER LUBRICATING APPARATUS FOR LOCOMOTIVES AND STEAM
ENGINES, (communicated from John Kernaul, a person resident at
Munich (Germany),)" upon the condition (amongst others) that I, the
said Frank Wirth, my executors or administrators, by an instrument in
writing, under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Frank-Wirth, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawings here-
unto annexed, that is to say:
This Invention has for its object the construction of a lubricating cup
which is applicable to locomotive and other steam engines, and is capable
of supplying the requisite quantity of lubricating material to the cylinder
and slide valve of a steam engine by a single manipulation, without
stopping the engine, and consists mainly of a hollow plug cock, the
plug of which is divided into two compartments with orifices which in a
certain position communicate with passages in the cock body leading to
the interior of the cup or reservoir containing the supply of lubricating
material, and each of which compartments is further provided with a
passage which in the same position of the plug communicates with an
air pipe leading to the top of the cup herein-before mentioned. In this
position of the plug the lubricating material flows down and fills the two
compartments. The body of the cock has three other passages formed
in it, the first two corresponding with the orifices in the compartments
of the plug and leading to the cylinder and valve box or other part
requiring to be lubricated, and the third passage corresponds with the
air passage in the plug, and is in communication with the steam space of
the boiler, so that as the plug is turned round the pressure of the boiler
is admitted into both compartments of the plug and the lubricating

page_text: material is forced down the pipes to its destination, or the parts requiring
to be lubricated. When the plug is turned back for the purpose of
replenishing its compartments with lubricating material the steam con-
tained in them first expands and escapes up the air pipe, so keeping
such air pipe clear and at the same time preventing the lubricant
becoming congealed in frosty weather.
Fig. 1 is a side sectional view, Fig. 2 a front sectional view, and Fig. 3
a sectional plan of a lubricating apparatus constructed according to the
said Invention, and drawn about full size; Fig. 4 is a sectional plan of
Fig. 2 through the line a to b. Similar letters marked on the several
views are used to denote similar parts.
a is the tapered plug of the cock containing the two compartments b
and c, which are each provided with orifices d and e; this tapered plug a
works in the cock body c¹, and when in the position illustrated in Fig. 1
both compartments b and c of such plug communicate through the
orifice d with a passage fleading to the interior of the cup or reservoir B
which contains the supply of lubricating material. In the same position
of the plug a the orifice e in both compartments b and c communicates
with an air pipe E leading to the top of the cup or reservoir B, and thus
the lubricating material contained in such cup or reservoir gravitates
into and fills both compartments b and c of the plug a, being strained
or sieved in its passage by passing through the grating D. The body c¹
has also three other passages formed in it, two of which, marked 9 and h,
are seen in Fig. 3, and communicato respectively by means of the pipes j
and with the interior of the cylinder of the locomotive or other steam
engine, and with the interior of the slide valve box appertaining to such
engine, in order that both cylinder and slide valve box may be lubricated
at the same time; the other passage, marked i, and seen in Figs. 2 and 3,
communicates with the steam space of the steam boiler, and which com-
munication may be completely closed independant of the plug a by
turning the plug of the additional plug cock h.
The action of this lubricating apparatus is as follows:-Both com-
partments of the plug a being filled with lubricating material, as herein-
before described, the plug a may be turned until the orifices & are
opposite to the passages g and h, when the orifice e will at the same
instant arrive opposite to the passage i and admit the pressure of steam
into both compartments simultaneously, and thus force the lubricant

page_text: down the pipe to its destination, or the parts requiring to be lubricated.
When the plug is turned back for the purpose of replenishing its com-
partments with lubricating material the steam contained in them first
expands and escapes up the air pipe E, so keeping such air pipe clear
and at the same time preventing the lubricant becoming congealed in
frosty weather.
I claim, the plug a with its two compartments and corresponding
orifices and passages, as and for the purposes herein-before described,
and illustrated on the accompanying Drawing.
In witness whereof, I, the said Frank Wirth, have hereunto set
my hand and seal, this Second day of January One thousand
eight hundred and seventy-four.
TD AUTZ TTDTT