Improvements in Road Wheels for Traction Engines.
Year: 1894

page_text: Date of Application: Sth Oct., 1894
Complete Specification Left, 8th July, 1895-Accepted, 7th Sept., 1895
PROVISIONAL SPECIFICATION.
Improvements in Road Wheels for Traction Engines.
I FREDERICK JOHN BURRELL of St. Nicholas Works Thetford in the County
of Norfolk, Engineer do hereby declare the nature of this invention to be as
follows:-
This invention consists of an improved construction of road wheel for traction
engines so that the same can be used upon paved roads and with less risk of slipping.
I utilize wood blocks arranged in segments transversely or diagonally across the
surface of the wheel, and secured rigidly in their position by bolts or other suitable
means. In order to prevent these blocks from becoming broken at the edges, and
to keep them in position upon the wheel rim, and at the same time to reduce the
side strain upon the bolts by which the same are secured, I fix two angle irons to
the rim of the road wheel upon the outer edges, one on each side, forining flanges
to support the ends of the blocks. I also place each block in a trough shaped
metal case, these metal cases abutting one against another transversely or diagonally
across the wheel, and preventing the blocks from splitting. Holes may be provided
in the wood blocks and metal cases to allow of bolts being used to secure the
paddles or frost spikes commonly used in traction engine road wheels. This con-
struction of wheel lends itself more especially to the usual type of road wheel
already in use with rima constructed of T irons, and if desirable, such existing
wheels can be readily converted in accordance with this invention at a moderate
cost. The wooden blocks before being placed in the metal troughs may be if
necessary compressed in a machine similar to that used for railway "keys," to give
greater durability. The metal troughs may be narrower above than below so as to
hold the blocks in position.
Dated this 6th day of October 1894.
CONTIUM DI EUITIVATION.
Improvements in Road Wheels for Traction Engines.
1, FREDERICK JOHN BURRELL of Saint Nicholas Works, Thetford in the
County of Norfolk, 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:-
The invention consists of an improved construction of road wheel for traction
engines so that same can be used upon paved roads and with less risk of slipping.
I utilize wood blocks arranged in segments transversely or diagonally across the
surface of the wheel and secured rigidly in their position by bolts or other suitable
means. In order to prevent these blocks from becoming broken at the edges and
to keep them in position upon the wheel rim and at the same time to reduce the
side strain upon the bolts by which the same are secured I fix two angle irons to
the rim of the rond wheel upon the outer and the inner edges one on each side
forming flanges to support the ends of the blocks. I also place cach block in a
trough shaped metal case, these metal cases abutting one against another transversely

page_text: or diagonally across the wheel and preventing the blocks from slipping. Holes
may be provided in the wood blocks and metal cases to allow of bolts being used to
secure the paddles or frost spikes commonly used in traction engine road wheels.
This construction of wheel lends itself more especially to the usual type of road
wheel already in use with rims constructed of T irons, and if desirable anch
existing wheels can be readily converted in accordance with this invention at a
moderate cost.
The wooden blocks before being placed in the metal troughs may be if necessary
compressed in a machine similar to that used for railway keys to give greater
durability and the metal cases may be made narrower above than below.
Figures 1, 3 & 5 are transverse sections.
Figures 2; 4 & 6 are elevations of a portion of the rim of a road whoel constructed
and arranged according to my invention.
In Figures 1 & 2 the rim of the wheel is shewn constructed of T irons A. A
with side flanges B. B. between which the wood blocks CC are situated. The
flanges may be formed of angle iron as in Figure 1 in which case they form a
portion of the rim of the wheel, or they may consist of loose rings as in Figure 3
and be secured by bolts D D passing transversely through or between the wood
blocks C C and taking a bearing against the edges a a of the Tirons so that when
the bolts D D are tightened the blocks C C are prevented from moving across the
face of the wheel: The blocks C C are held in position by the bolts E.
be
If desirable each block may be fitted in a trough shaped metal case F F as
shewn in Figures 3; 4, these metal cases abutting one against another and may
varied in form as occasion may require. If desirable the blocks CC may be
compressed before they are. put in the metal cases F F. so as to insure greater
durability.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I am aware that wooden blocks
have been used on the rims of wheels for traction purposes and I do not claim the
se of wood blocks only for the purpose of preventing slipping but what I do
.claim is.
1st. In wheels for traction engines the use of flanges to keep the wood blocks
from moving across the face of the wheel.
2nd. In traction road wheels fitted with wood blocks the combination and
arrangement of parts substantially as herein before described & illustrated in the
accompanying drawings.
Dated this 6th day of July 1895.
FREDERICK JOHN BURRELL.