Improvements in Wheels for Railway and Tramway Vehicles.
Year: 1893

page_text: Date of Application, 26th Apr., 1893
Complete Specification Left, 26th Jan., 1894-Accepted, 3rd Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Wheels for Railway and Tramway Vehicles.
1, JOHN JAMES D'AVIDGE CLEMINSON of Dashwood House, Old Broad
Street, in the City of London, Civil Engineer do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in composite wheels constructed of
metal in combination with wood or other suitable cushioning material, and it has
for its object to enable composite wheels having the maximum of efficiency to be
constructed more economically than has been possible with the methods of con-
struction heretofore adopted.
A wheel, according to my invention is constructed as follows :-The nave which
may be made of any suitable metal is constructed with arms either formed in one
with, or affixed to, the nave, in which latter case the arms may be of a different
metal to that of which the nave is composed. The arms extend to within a short
distance of the inner circumference of the tyre, their outer ends being formed. with
a lip or lips or projection or projections which extend or extends somewhat beyond
the inner circumference of the tyre. The spaces between the arms are filled in
with wood or other suitable cushioning material and the whole secured by means
of washer plates or retaining rings and bolts or rivets that are arranged to pass
through the said plates or rings and segments only but not through the metal arms
as heretofore.
By these means the maximum of efficiency viz. resistance to tensional and lateral
stresses strength and durability is retained whilst the cost of manufacture is
considerably reduced.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Wheels for Railway and Tramway Vehicles.
I, JOHN JAMES D'AVIDGE CLEMINSON, of Dashwood House, Old Broad
Street, in the City of London, Civil Engineer, 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:-
This invention relates to improvements in composite wheels constructed of metal
in combination with wood or other suitable cushioning material, and it has for its
object to enable composite wheels having the maximum of efficiency to be con-
structed more economically than has been possible with the methods of construction
heretofore adopted.
A composite wheel according to my invention is constructed in the improved
manner I will now proceed to explain by reference to the accompanying drawings
in which,
Fig. 1 shows my improved wheel in side elevation with parts thereof broken
and

page_text: The nave 1, which may be made of any suitable metal, is constructed with
arms 2 either formed in one with, or fixed to it, in which latter case they may be
of a different metal to that of which the nave is composed. The arms extend to
within a short distance of the inner circumference of the tyre 3, their outer ends
being each formed with a lip or projection 2ª (or lips or projections) which extends
(or extend) somewhat beyond the inner circumference of the said tyre and into a
recess 2 in the tyre in such a manner as to prevent the tyre turning relatively to
the arms but so that the ends of the lips or projections do not abut against the
inner ends of the recesses, so that they will not interfere with the elasticity or
cushioning action or effect of the wood or other suitable cushioning material 4
with which the spaces between the arms 2 are filled. The filling material is
preferably in the form of segments as shown, that are fitted tightly in between the
nave and the tyre. The various parts are secured firmly together between washer
plates 5 arranged at opposite sides of the inner ends of the arms and_segments,
and retaining rings 5 arranged at opposite sides of the outer ends of the arms and
segments and engaging in annular grooves 5b in opposite sides of the tyre, these
washer plates and retaining rings being fixed in place by bolts 6, (or rivets) which
are arranged to pass through the said washer plates and retaining rings and
through the segments 4 but not through the metal arms 2 as heretofore usual.
By the construction described the maximum of efficiency viz. resistance to
tensional and lateral stresses, strength and durability, is retained whilst the cost of
manufacture is considerably reduced as compared with composite wheels constructed
in the usual manner.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A composite wheel for railway and tramway vehicles in which the arms 2
extend from the nave to within a short distance of the inner circumference of the
tyre, and are interlocked with the tyre in such a way as to prevent relative move-
ment thereof without interfering with the elasticity or cushioning action of the
wood or other cushioning material arranged between the arms, and the said arms,
cushioning material, and tyre are secured in place between washer plates and
retaining rings by means of bolts or rivets that pass only through the said plates
rings and cushioning material, but not also through the said arms substantially as
described and shown for the purpose specified.
2. The improved composite wheel constructed as described and shown.
Dated this 26th day of January 1804
JOHN J. D. CLEMINSON.
W. Lloyd Wise,
-46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.