IMPROVEMENTS IN TRAM CAR, AND OTHER RAIL WHEELS
Year: 1884

page_text: I FREDERICK GEORGE MYERS 27 Kerr Street, Northampton Engineer, do hereby
declare the nature of my invention for IMPROVEMENTS IN TRAM CAR, AND OTHER
RAIL WHEELS to be as follows:-
This invention consists of wheels with loose tyres, which tyres are free to revolve
independently round the outer body of the wheel on friction balls, rollers, and
other loose segmental blocks or rings, working in one or more suitable grooves
made in the inner circle of the tyre and outer periphery of the wheel body
correspondingly.
كيمو
.

page_text: Improvements in Tram-car and other Rail Wheels.
Í FREDERICK GEORGE MYERS of N° 27 Kerr Street, Northampton in the
county of Northampton, Engineer, do hereby declare the nature of the said
invention for "IMPROVEMENTS IN TRAM-CAR AND OTHER RAIL WHEELS
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
and in
This invention relates to improvements in wheels for tram-cars, railway carriages
and other carriages running on rails and the invention consists in providing such
wheels with loose tyres adapted to revolve independently around the periphery of
the body of the wheel on friction balls, rollers, or loose segmental blocks working
in one or more suitable grooves in the inner circumference of the tyre and outer
periphery of the wheel body, the object of the invention being to allow of either
wheel on the same axle travelling faster than the other round curves so as to
obviate the break or skidding action which usually takes place.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1 is a trans-
verse section through the rim of a wheel provided with a loose tyre according to
my invention; figure 2 is a similar view shewing the chamber in the wheel which
is required to allow of inserting the friction balls, rollers or blocks; figure 3 is a
longitudinal section of part of the rim of a wheel and loose tyre shewing the balls
separated by distance pieces and springs; figure 4 outside view of part of the rim
of a wheel, the plates employed to cover the joints, between the tyre and the body
of the wheel, not being shewn; figure 5, longitudinal section of part of the rim of
a wheel shewing segmental metal blocks in place of balls placed between the tyre
and the periphery of the wheel.-In figures 1, 2, 3, and 4-A represents the loose
tyre preferably made of steel; A¹ represents the body of the wheel; B, B, are the
friction balls between the loose tyre A and periphery of the body of the wheel A¹;
the said balls run in the grooves a, b, in the tyre and wheel body respectively;
J, J, represent distance pieces of suitable material placed between the balls B,
and H, are springs which I find it convenient to employ for the purpose of taking up
the wear of the balls B (or rollers or segments); C, C, represent plates to cover the
joints between the tyre A and wheel body A¹, for the purpose of keeping out dirt
and the like and for side steadiment of the tyre; D, D, leather or other packing
between the plates C and tyre A and wheel body A'-E and E¹, figures 2 and 4
represent blocks closing a chamber c in the wheel body through which chamber are
inserted the balls B, springs H, and distance pieces J, the blocks E¹ and E are then
inserted and fixed by a screw bolt d, and nut e, the bolt passing through the
plates C, blocks E, E', and wheel body A': f.f, are bolts for bolting the plates C,
to the tyre and wheel body.
The arrangement shewn in figure 5 is substantially the same as that hereinbefore
described and shewn in figures 1, 2, 3 and 4 except that in place of the balls B,

page_text: and distance pieces J, I employ segmental blocks F.-G, G, are washers of suitable
material such as leather placed between the blocks F and between the blocks F and
the springs H.
In a wheel constructed as herein before described it will be obvious that the tyre
can move independently of the body of the wheel which is of great advantage in
running round curves.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The manufacture and use of wheels having loose steel tyres, which tyres are
free to revolve independently around the body of the wheel as hereinbefore
described.
2. In a wheel having a loose tyre the use of friction balls, rollers or segmental
blocks working in suitable grooves made in the inner side of the tyre, and periphery
of the wheel body respectively substantially as hereinbefore described and repre-
sented in the accompanying drawing.
3. The use in wheels having loose tyres of covering plates as and for the purpose
hereinbefore described.
4. The improved wheels for tram-cars and railway carriages herein before
described and represented in the accompanying drawing.
201
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.