Improvements in Wheels.
Year: 1886

page_text: Date of Application, 29th July, 1888.
Complete Left, 12th Mar., 1887.
Complete Accepted, 15th Apr., 1887,
PROVISIONAL SPECIFICATION.
Improvements in Wheels.
I, ALFRED DICKINSON of Tramway Depot Darlaston in the County of Stafford
Tramway Manager do hereby declare the nature of the said invention to be as
follows:-
My invention has for its object improvements in wheels which are more especially
intended for use upon Tramways and Railways where the wear and tear would be
considerable such for instance as where brakes are constantly applied to the wheels
and where the tyre would often require to be renewed which can be done by my
invention very effectively and so as to minimize the noise produced by the running of
such wheels which is now felt to be so objectionable.
My tyres are made of steel or other hard tough wearing metal and are formed with
an internal flange at the plain side and the flange is bored out slightly taper. The
internal part or arms are turned to fit the taper in the tyre but slightly larger and
a recess is formed around the circumference of the rim of the internal part connecting
the arms or forming the centre of the wheel in which I place a ring of india rubber,
lead, asbestos or other material having a deadening effect upon the sound produced by.
concussion with the rails.
I also introduce a facing between the flange face and tyre face and I further form
the point of the arms or centre block of a hexagonal or other equivalent shape so as
to relieve the bolts which pass through the flanges to secure the two together from any
undue strain so that the tendency of the tyre to turn is entirely prevented. Or the
points of the arms may be let into the flange of the tyre which answers the same
purpose. When the two are forced together the packings are compressed and no jar
can occur and the noise is considerably reduced.
JOHN
KENDRICK,
77, Colmore Row, Birmingham,
Agent for Applicant.

page_text: Improvements in Wheels.-
I ALFRED DICKINSON of Tramway Depot, Darlaston in the County of Stafford,
Tramway Manager 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 :-
My invention has for its object improvements in wheels which are more especially
intended for use upon Tramways and railways where the wear and tear would be
considerable such for instance as when brakes are constantly applied to the wheels and
where the tyre would often require to be renewed which can be done by my invention
very effectively and so as to minimize the noise produced by the running of such
wheels which is now felt to be so objectionable.
My tyres are made of steel or other hard tough wearing metal and are formed with
an internal flange at the plain side and the flange is bored out slightly taper. The
internal part or arms are turned to fit the taper in the tyre but slightly larger and a
recess is formed around the circumference of the rim of the internal part connecting
the arms or forming the centre of the wheel in which I place a ring of india-rubber,
lead, asbestos or other material having a deadening effect upon the sound produced by
concussion with the rails. I also introduce a facing between the flange face and tyre
face and I further form the points of the arms or centre block of a hexagonal or other
equivalent shape so as to relieve the bolts which pass through the flanges to secure
the two together from any undue strain so that the tendency of the tyre to turn is
entirely prevented. Or the points of the arms may be let into the flange of the tyre
which answers the same purpose. When the two are forced together the packings
are compressed and no jar can occur and the noise is considerably reduced.
In order that my invention may be clearly understood and more easily carried into
practice I have appended hereunto a sheet of drawings illustrating a wheel made
according thereto.
Figure 1 is an elevation of the outside of the wheel.
Figure 2 is a cross section through the wheel at D. E. with the axle in elevation but
broken off and the bolts c³ and c being also shewn in elevation.
Figure 3 is an elevation of a broken off portion of the tyre with the arms removed.
Figure 4 is a section of the tyre in its separate state.
Figure 5 is a section through the tyre and rim of the centre B between the arms
at F. K.
The elevation Figure 1 is as before mentioned taken from the small or outside of
the wheel which is marked the a' side of the tyre A. In Figure 1 and also in Figure 2
the wheel is shewn in its completed condition that is with the solid centre part B
fastened in position by the bolts c. c¹ c² ca c1 c³ c and c' there being one bolt at the
junction of each of the eight arms. Each of the arms here shewn are longer than the
inner diameter of the rim a² of the tyre A and the rim is cut or notched out at a³ to
receive the ends thereof, as clearly shewn by Figure 3 and it will be clearly understood

page_text: that these projections let into the tyre have the effect of relieving all side or shearing
strain from the bolts which would be due to any tendency of the centre B to turn
inside the tyre when the brakes were applied. The packing piece or deadening ring m
as before stated may be made of any suitable material for deadening sound but I have
found canvas packing to answer the purpose very well. A groove is made in the rim
of the centre part B to receive the ring m.
There is also a deadening ring or forcing
piece n introduced between the flange a² and the outer rim of the centre part B which
further assists to deaden the sound but in some cases the ring m only may be needed.
The tyre A may be renewed at any time without renewing the centre B as there is
practically no wear on the centre. It will also be evident that the deadening material
may be introduced at other parts of the wheel in various proportions with a similar
deadening effect upon the sound.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I doclaro that what I claim is :-
The improvements in wheels built up in such a manner as to prevent the easy
communication of sound from one part to the other and in order that renewals of the
tyre may be easily affected substantially as and for the purpose herein set forth.
Dated this Lin
day
OI Maren 1887.
JOHN KENDRICK,
77, Colmore Row, Birmingham,
Agent for Applicant.
JOHN KENDRICK,
77, Colmore Row, Birmingham,
Agent for Applicant.