Improved Construction of Built Iron and Steel Wheels.
Year: 1892

page_text: Date of Application, 19th Mar., 1892
Complete Specification Left, 27th July, 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SPECIFICATION.
Improved Construction of Built Iron and Steel Wheels.
JOHN OLIVER Mechanical Engineer, The Lawn, Calow near Chesterfield, do
hereby declare the nature of this invention to be as follows :-
The uniform curving of spokes so as to best take the lateral & vertical thrust
& vibration with the maximum of strength, durability & elasticity see drawing
sheet No. 1. accompanying this Specification.
Also the application of a solid welded ring of channel section to form fellow.
DL: 10th
f March 1900
JOHN OLIVER.
COMPLETE SPECIFICATION.
Improved Construction of Built Iron and Steel Wheels.
JOHN OLIVER, The Lawn, Calow near Chesterfield, Engineer (Mechanical), do
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
The invention consists in so forming the spokes of wheel that the deep way of
section is placed at right angles to wheel at boss to resist transverse pressure &
twisted near felloe of wheel so that the deep way of section follows the direction of
felloe to meet lineal pressure & further that in conjunction with this the arms are
bent in a S shape between boss & felloe so as to best resist transverse & vertical
pressure with the maximum of elasticity & the minimum of shock to the couplings
of spokes with boss & felloes.
Sheet 1 & figure marked B. accompanying Provisional form applies to this
description & shews the application to a channel section felloe for a heavy cart &
spokes as described.
The spokes which are of spring steel where fixed in nave are alternately set
transversely on either side of central plane of wheel, some six inches apart for a
heavy cart wheel, & varying to suit different diameters, with deep way of section,
at right angles to central plane of wheel. Each spoke alternately from opposite
sides curves for about half its length in a concave form towards central plane of
wheel, and then for the greater portion of its remaining length in an opposite, or
convex form, still inclining towards central plane of wheel, the whole forming
what may be termed an S shaped curve, bending the deep edge of section. At
the end of this curved part & close to felloe the deep way of section of spoke is.
twisted at right angles to the curved part so that the remaining length where
attached to felloe is in a right line with it & central plane of wheel.
Having particularly described & ascertained the nature of my said invention
& in what manner the same is to be performed, I declare that what I claim is :—
(1.) The special formation of unequal sided section spokes so that deep way of
section stands transversely to central plane of wheel at nave & at right angles to
this, viz. in a right line with central plane of wheel where attached to felloe,
combined with the special convex & concave curving as above described to facilitate
spring or cushion to strains & minimise shocks to coupling points at nave & felloe,
thus ensuring long wear.
Dated this 14th day of October 1892.