IMPROVEMENTS IN WHEELS FOR COLLIERY TRAMS,' 'CORVES,' OR WAGONS, AND IN THE MEANS OF LUBRICATING THE AXLES THEREOF."
Year: 1876

page_text: LETTERS PATENT to William Hely Llewellyn, of the Rhondda Engine Works,
Pentre, in the County of Glamorgan, for the Invention of "IMPROVEMENTS IN
WHEELS FOR COLLIERY TRAMS,' 'CORVES,' OR WAGONS, AND IN THE MEANS OF
LUBRICATING THE AXLES THEREOF."
PROVISIONAL SPECIFICATION left by the said William Hely Llewellyn at
the Office of the Commissioners of Patents on the 22nd August 1876.
WILLIAM HELY LLEWELLYN, of the Rhondda Engine Works, Pentre, in the
County of Glamorgan. IMPROVEMENTS IN WHEELS FOR COLLIERY 'TRAMS,'
'CORVES,' OR WAGONS, AND IN THE MEANS OF LUBRICATING THE AXLES THEREOF."
This Invention relates to improvements in the construction and the means of
lubricating the wheels of colliery "trams," "corves," or wagons.
In the construction of the wheel I propose to cast it with an oil chamber sur-
rounding the nave or boss, the core from which chamber after casting I remove
through two or more openings cast in the outer wall of the chamber from which the
arms radiate. These openings are subsequently fitted up with closing pieces leaded
securely in position so as to enclose the said oil chamber into which the oil or
lubricant is introduced so as to fill it through one of the said closing pieces which
is troughed and shaped on its inner side in such a manner as to hold a short piece of
india-rubber tubing which closes a hole in the bottom of the trough through which
the oil is introduced into into the chamber, the oil can depressing the rubber tube,
expanding and closing the hole upon the can being withdrawn and preventing the
exit of the oil.
The lubricant or oil obtains access to the shaft for axle, and between it and the
boss of the wheel through one or more orifices cast in the boss, and in which headed
needles work up and down by the travelling motion of the wheel and prevent the
thickening of the oil; this may also be effected by sponges placed in these orifices.
The oil passes therefrom into the chamber which is cast in the boss in its inner
periphery and surrounds the shaft or axle.

page_text: SPECIFICATION in pursuanco of the conditions of the Letters Patent filed by
the said William Hely Llewellyn in the Great Seal Patent Office on the
22nd February 1877.
"
WILLIAM HELY LLEWELLYN, of the Rhondda Engine Works, Pentre, in the
County of Glamorgan. "IMPROVEMENTS IN WHEELS FOR COLLIERY "TRAMS,'
'CORVES,' OR WAGONS, AND IN THE MEANS OF LUBRICATING THE AXLES THEREOF.'
This Invention relates to improvements in constructing, and in the means of
lubricating the wheels of colliery trams, corves, or wagons.
The Invention is illustrated on the accompanying Sheet of Drawings in Figures 1
to 4, of which Figure 1 reprosents the improved wheel in elevation; Figure 2
being a transverse section thereof; and Figures 3 and 4 sections of the oil
chamber.
.
The improved wheel is cast with an oil chamber 1 surrounding the nave or
boss 2, the core from which chamber after casting "is removed through openings 3
cast in the side of the chamber, and which are subsequently filled up with closing
pieces leaded securely in position. The arms 4 and rim 5 are cast together with
the chamber 1, into which the oil or lubricant is introduced (so as to fill it) through
a hole 6, under which is a trough-shaped formation 7, in which is fitted an india-
rubber thimble valve 8 which is depressed by the oil can spout when filling the
chamber 1 to allow of the oil entering, and which expands and closes the hole 6
upon the can being withdrawn and prevents the oil escaping.
The lubricant or oil obtains access to the usual chamber 9 cast in the inner
periphery of the boss 2, and surrounding the shaft or axle 10 through one or more
orifices 11 cast in the boss, and in which headed needles 12 work up and down by
the travelling motion of the wheel and prevent the thickening of the oil; this may
also be effected by sponges 13 (or by means of flannel or any woolly substance)
placed in the orifices 11, and kept in position by tin clips 14. The needle 12 is
inserted through a hole 15, which is afterwards closed by a hard plug of wood 16
which regulates the travel of the needle.
Having now described the nature and object of my said Invention, together with
the manner in which the same is to be or may be performed or carried into practical
effect, I would remark in conclusion that I claim as my Invention, the novel and
peculiar construction of the wheels of colliery trams, corves, or wagons, with the
above described improvements for the purpose specified, together with the means of
lubricating such wheels, substantially as described and as illustrated on the accom-
panying Sheet of Drawings.
In witness whereof, I, the said William Hely Llewellyn, have hereunto set
my hand and scal, this Twenty-second day of February, in the year of our
Lord One thousand eight hundred and seventy-seven.
Witness,
BRISTOW HUNT,
Solicitor and Patent Agent,
5, Serle Street,
Lincoln's Inn. .
W. H. LLEWELLYN. (L.S.)