IMPROVEMENTS IN THE CONSTRUCTION OF WHEELS TO BE USED ON RAILWAYS
Year: 1876

page_text: LETTERS PATENT to William Edward Gedge, of No. 11, Wellington Street,
"
Strand, in the County of Middlesex, Patent Agent, for the Invention of
IMPROVEMENTS IN THE CONSTRUCTION OF WHEELS TO BE USED ON RAILWAYS."
A communcation from abroad by Friedrich Rödiger, of Vienna, Austria.
Sealed the 26th January 1877, and dated the 28th November 1876.
COMPLETE SPECIFICATION filed by the said William Edwin Gedge at 'the
Office of the Commissioners of Patents on the 28th November 1876.
WILLIAM EDWARD GEDGE, of No. 11, Wellington Street, Strand, in the County
of Middlesex, Patent Agent. "IMPROVEMENTS IN THE CONSTRUCTION OF WHEELS
TO BE USED ON RAILWAYS." A communication from abroad by Friedrich Rödiger
of Vienna, Austria.
This Invention consists in forming the bosses of wooden disk wheels with pro-
jections, giving great additional bearing surface for the ends of the wood blocks
against the bosses, these projections also taking torsional strain off the bolts.
Bosses cast in this form may be made either with loose washer plates or be cast
with the washer plate solid to the other part of the boss.
This Invention also consists in casting the bosses with projections on them where
the bolts are to go through, thereby preventing the bolts from chafing the wood
away and cutting out when the boss slackens in the wood disk, and becomes loose.
These projecting pieces are also intended to give a larger surface or bearing against
the wood, and prevent side strain on the bolts.
Projections or ferrules for the passage of the bolts may also be cast either whole
or in halves, and be forced into the wood disks of either new or old wheels, thus
giving a larger surface of metal to the wood, and when the bolts are passed through
these casings or ferrules additional strength and security will be given to the bosses
of the wheels.
The like kind of ferrules or casings may also be applied in the same way to the
bolts, going through the outer rings or any other part of the wheels.
On the accompanying Sheet of Drawing, Figure 1 represents a half sectional
elevation of a boss partly fitted with wooden blocks or segments, according to this
Invention; Figure 2 is a similar view, but having provision made for extra outer
bolts.

page_text: Figures 3 and 4 illustrate a modification of the above, there being no lugs or
flanges for outer bolts.
Figure 5 is a cross section through boss, as shown in Figure 1, and Figure 6 is a
cross section through boss, as shown in Figure 2.
The projections or divisions A on the boss may be of the shape shown, or of any
other shape that will give additional bearing surface for the ends of the wood
blocks or segments B, prevent the boss moving round the disk, and take the tor-
sional strain of the wheels.
An additional row of bolts may be put round the boss, either by enlarging it or
by forming lugs, as shown in Figure 2.1
The blocks or segments B forming the disk may be shaped, as shown in Figures
1, 2, 3, and 4, with or without the additional row of bolts, or be made of any
shape to suit the form of boss for acquiring additional bearing surface, and pre-
venting the bosses moving round in the disc.
Figure 7 shows the construction of a boss with projections, ferrules, or casings
for passage of bolts.
Figure 8 represents various forms and sections of solid ferrules for bolts, and
Figure 9 same forms of ferrules, but made in halves.
The projections or ferrules C surrounding the bolts may be either round, oval, or
square, as shown, or of any form which may be preferred, and be cast solid with the
boss, the wood being cut out to suit them; but it is preferred to make them loose, as
shown by Fig. 8, making them of any kind of metal or hard substance, and driving
them tight into the wood to form casings or ferrules for the bolts to go through,
thereby, as aforesaid, preventing the bolts from chafing or cutting the wood or disk
away in the event of the boss becoming loose.
These casings. or ferrules may be made of sufficient size to get a large bearing
surface into contact with the disk; they may be made either taper or with parallel
sides, as may be preferred, and be cast solid, as shown by Fig. 8, or in two parts, as
shown by Fig. 9, or in any number of parts, the object of making them in parts
being that the pressure of the wood on the outside of them will compress the bolts
inside, and prevent them from shaking.
Having now described and ascertained the nature of the said Invention, com-
municated to me as aforesaid, and in what manner the same is or may be per-
formed, I desire it to be understood that I do not confine myself to any particular
shape or dimensions of the several parts of these improvements in wheels, as such
may be infinitely varied, while retaining the same principles of construction; and
that what I claim and desire to secure by Letters Patent is,-
Firstly. The construction of wheels for railway rolling stock with projections on
the boss, forming additional bearing surfaces for the wooden blocks or segments,
substantially as herein-before set forth.
Secondly. The use of the projections, ferrules, or casings for the bolts, whether
made of one piece with the boss or other part of the wheel, or made separately in
one or more parts, and applied to the wheel, substanțially as and for the purpose
herein-before specified.
In witness whereof, I, the said William Edward Gedge, have hereunto set my
hand and seal, this Twenty-eighth day of November, in the year of our
Lord One thousand eight hundred and seventy-six.
W. E. GEDGE. (L.S.)