IMPROVEMENTS IN THE CONSTRUCTION OF WHEELS AND AXLES TO FACILITATE THE FIXING OR FITTING TOGETHER OF THE PARTS THEREOF.
Year: 1879

page_text: LETTERS PATENT to Thomas Chappel, of Sheffield, in the County of York,
Engineer and Draughtsman, for the Invention of "IMPROVEMENTS IN THE
CONSTRUCTION OF
WHEELS AND AXLES TO FACILITATE THE FIXING OR
FITTING TOGETHER OF THE PARTS THEREOF.'
"
Sealed the 27th December 1879, and dated the 8th July 1879.
PROVISIONAL SPECIFICATION left by the said Thomas Chappel at the
Office of the Commissioners of Patents on the 8th July 1879.
THOMAS CHAPPEL, of Sheffield, in the County. of York, Engineer and Draughts-
man. "IMPROVEMENTS IN THE CONSTRUCTION OF WHEELS AND AXLES TO
FACILITATE THE FIXING OR FITTING TOGETHER OF THE PARTS THEREOF."
This Invention relates to improvements in the construction of wheels and axles,
chiefly applicable to colliery and mine trams or corves, tip wagons, and the like
vehicles.
As at present generally constructed a pair of wheels are permanently secured to
an axle in such a manner that in the event of the wheels being removed from the
axle the axle becomes valueless, or otherwise the pair of wheels are secured to the
axle by methods more complicated and expensive than by the method which forms
the Invention hereinafter described.
In constructing a pair of wheels and axles according to this Invention the axle
is tapered in those portions of it which form the wheel-seats, and the holes in the
bosses of the wheels are of a form corresponding to that of the wheel-seats of the
said axle; the axle, beyond the wheel-seats and towards the extremities thereof, is
chased or screwed to receive nuts, and through the said nuts, or through the nuts
and wheels, either longitudinally or transversely, are keys or pins to prevent the
nuts and wheels working loose on or becoming detached from the said axle.
The axles can be so made as to form either inside or outside bearings as now
ordinarily constructed.

page_text: 1
SPECIFICATION-in pursuance-of-the-conditions-of-the-Letters-Patent-filed-by-
the said Thomas-Chappel in the Great Seal Patent Office on the 6th January
1880.
THOMAS CHAPPEL, of Sheffield, in the County of York, Engineer and Draughts-
man. "IMPROVEMENTS IN THE CONSTRUCTION OF WHEELS AND AXLES TO
FACILITATE-THE FIXING-OR-FITTING-TOGETHER OF-THE-PARTS-THEREOF."
This Invention relates to improvements in the construction of wheels and axles,
chiefly applicable to colliery and mine. trams or tip wagons and the like vehicles,
also applicable to pulleys, rollers, and the like articles.
As at present generally constructed a pair of wheels are permanently secured to
an axle in such a manner that in the event of the wheels being removed from the
axle the axle becomes valueless, or otherwise the pair of wheels are secured to the
axle by methods more complicated and expensive than by the method which forms
the Invention hereinafter described.
In constructing a pair of wheels and axles according to this Invention the axle is
tapered in those portions of it which form the wheel-seats, and the holes in the
bosses of the wheels are of a form corresponding to that of the wheel-seats of the
Baid axle; the axle beyond the wheel-seats and towards the extremities thereof is
chased or screwed to receive nuts, and through the said nuts or through the nuts
and wheels, either longitudinally or transversely, are keys or pins to prevent the
nuts and wheels working loose on or becoming detached from the said axle.
The axles can be so made as to form either inside or outside bearings as now
ordinarily constructed.
The accompanying Sheet of Drawings illustrate my improvements as applied to
wheels and axles with outside and inside bearings. Fig. 1 is a side view of the
wheel, of which A is the boss and B the key groove. Fig. 2 is a sectional elevation
of a wheel fitted to an axle with an outside bearing; A is the boss of the wheel,
having a taper hole through it; C is the axle tapered in the wheel seat, and chased
'or screwed as at F for the nut E; D is a cotter or key; G is the outside bearing.
Fig. 3 is a sectional elevation of a wheel fitted on to an axle with an inside bearing;
A is the wheel boss having a taper hole through it; C is the axle tapered in the
wheel seat, and chased or screwed as at F for the nut E; D is a cotter or key; H is
the inside bearing. Fig. 4 is a front view of the nut E. Fig. 5 is a side view of
the nut E. Fig 6 is a side view of the cotter D. Fig. 7 is a plan of the cotter D.
Having now described and particularly ascertained the nature of my said Inven-
tion, and the manner in which the same is or may be used or carried into effect, I
would observe in conclusion that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the herein before in part recited
--Letters Patent is;-
Improvements in the construction of wheels and axles to facilitate the fixing or
fitting together of the parts thereof, substantially as hereinbefore specified and
described, and illustrated in the accompanying Sheet of Drawings.
In witness whereof, I, the said Thomas Chappel, have hereunto set my hand
and seal, this Twelfth day of December, in the year of our Lord One
thousand eight hundred and seventy nine.