CERTAIN NEW AND USEFUL IMPROVEMENTS IN RAILWAY CAR WHEELS
Year: 1882

page_text: LETTERS PATENT to Henri Adrien Bonneville of the British and Foreign.
Patent Offices, 8 Chaussée d'Antin, Paris, France, and 90 Cannon Street in
the city of London, Patent Agent, for an Invention of CERTAIN NEW AND
USEFUL IMPROVEMENTS IN RAILWAY CAR WHEELS A communication from
Edward Brown Meatyard, a person resident at Lake Geneva Walworth
county, in the State of Wisconsin, United States of America.
COMPLETE SPECIFICATION filed by the said Henri Adrien Bonneville at
the Office of the Commissioners of Patents on the 17th Juno 1882. :
HENBI ADRIEN BONNEVILLE of the British and Foreign Patent Offices, 8, Rue
de la Chaussée d'Antin, Paris, France, and 90 Cannon Street, in the city of
London, Patent Agent. CERTAIN NEW. AND USEFUL IMPROVEMENTS IN RAILWAY
CAR WHEELS Communicated to me by Edward Brown Meatyard, a person
resident at Lake Geneva, Walworth county, in the State of Wisconsin, United
States of America.
:

page_text: slotted radially so that when forced on the axle and rivetted to the tire, as shown,
they may constitute a cushion between the axle and the tire.
II. In making the tire or rim with an internal annular stem of such shape as
will best preservo its circular form. Its tread cast on the chill so as to be cylindric
for so much of its width as is needed for use on a straight track, thence curved
with a gradually diminishing radius until it merges into the flange or wheel guard
to furnish increased diameter of wheel for rounding curves.
A is the tire. B and B' are the two curved discs. The tiro A must be inflexible
to prevent shearing of the rivets fastening the disc web to its stem. It need not
be coned on its tread, but cylindric to run fair and square on the top of rail of
a straight track, and at the same time have its diameter gradually augmented
towards its flange, to enable it to round curves with the least friction.
The discs B and B' are interchangeable, thickened near their central aperture to
form a hub, and flanged at their outer edge to furnish adequate bearing surface
for contact with the tire; the radial openings in them have rounded heads and
width proportioned to the distance from their centre, so that the uncut portions of
the discs corresponding to the spokes in a wheel may be of uniform strength
throughout that portion of their length which absorbs shocks, taking into account
the thickness of the wheel at different points between the axle and the tire. It
must be apparent that with an inflexible tire, and a yielding web to Car-wheels
which do not grind on straight rails, the life of both wheels and rails must be
lengthened. The thickening of the discs to form the hub may be made of soft
cast steel.
Having thus described the invention, I do not wish to limit myself to any
particular way of doing it, but I claim as new and desire to secure by Letters
Patent:
I. The elastic Car wheel having its body or web formed of two circular discs,
thickened to form a central hub and cut with radial slits substantially as shown
and described.
II. The combination of the two discs B and B' and the tire A when fastened
together, substantially as shown and described.
III. In Car-wheels, a tread which is cylindric for a portion of its width, thence
curved on a gradually diminishing radius until said curve becomes tangent to a
vertical line at inner face of the wheel flange, substantially as shewn.
In witness whereof, I, the said Henri Adrien Bonneville, have hereunto set
my hand and seal, this sixteenth day of June in the year of our Lord One
thousand eight hundred and eighty two.
D
DANNATIT