IMPROVEMENTS IN WHEELS FOR TRACTION ENGINES AND FOR OTHER PURPOSES "
Year: 1883

page_text: LETTERS PATENT to John M.Laren and Henry M.Laren both of Leeds in the
County of York, Engineers, for an Invention of "IMPROVEMENTS IN WHEELS
FOR TRACTION ENGINES AND FOR OTHER PURPOSES
"
PROVISIONAL SPECIFICATION left by the said John M'Laren and Henry
McLaren at the Office of the Commissioners of Patents on the 9th April
1883.
JOHN MCLAREN and HENRY MOLAREN both of Leeds in the County of York
Engineers "IMPROVEMENTS IN WHEELS FOR TRACTION ENGINES AND FOR OTHER
PURPOSES
"3
Our Invention has reference to wheels wherein Springs are employed in place of
rigid spokes to connect the ring to the hub of the wheel According to our present
improvements in place of making each bow or equivalently shaped springs in one
piece rivetted or bolted to the rim and to the boss we form each such spring in
corresponding halves or parts formed with turned in ends at their outer parts by
which they are secured to the rim by means of a clamping fastening consisting of
a bed piece and a bearing piece through which pieces and the rim of the wheel a
bolt or bolts is or are passed and a nut or nuts being screwed upon the said bolt or
bolts firmly nips the turned in ends of each two parts or adjacent halves of the
springs between the bed piece and bearing piece and thus secures the springs to
the rim without bolt holes in the springs at this part which bolt holes are very
objectionable and frequently cause the springs to fracture at the part where the
said holes are made Each half or part of the springs may be formed of one or
more leaves.
The inner ends of the said halves or parts are preferably fastened to the Hub
by means of bolts and nuts each adjacent halves or parts of the said springs being
bolted to a wrought iron rib piece or projection cast into a recess in the hub of the
wheel
When the rim is driven by a positive motion directly imparted to the rim so as
to take the driving strain off the wheels we effect this by means of a crank arm on
one or both sides of the wheel the said arm or arms at the inner end being formed
with a plate bolted or otherwise fastened to the Hub of the wheel and the outer
end or ends being connected to the rim of the wheel by a Crank pin working in a
radial slot or slots in bracket pieces formed on or attached to the rim-The said
crank arm or arms may be formed in one with the spur gearing used to drive the
Engine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John McLaren and Henry McLaren in the Great Seal Patent
Office on the 2nd October 1883.
JOHN MOLAREN and HENRY MOLAREN both of Leeds in the County of York
Engineers "IMPROVEMENTS IN WHEELS FOR TRACTION ENGINES AND FOR OTHER
PURPOSES
"
Our Invention has reference to wheels wherein springs are employed in place of
rigid spokes to connect the rim to the hub of the wheel. According to our present
improvements in place of making each bow or equivalently shaped springs in one
piece rivetted or bolted to the rim and to the boss we form each such spring in
corresponding halves or parts formed with turned in or bent ends at their outer
parts by which they are secured to the rim by means of a clamping fastening
consisting of a bed piece and a bearing piece through which pieces and the rim of
the wheel a bolt or bolts is or are passed and a nut or nuts being screwed upon the
said bolt or bolts firmly nips the turned in ends of each two parts or adjacent
halves of the springs between the bed piece and bearing piece and thus secures the
springs to the rim without bolt holes in the springs at this part which bolt holes
are very objectionable and frequently cause the springs to fracture at the part
where the said holes are made. Each half or part of the springs may be formed of
one or more leaves
The inner ends of the said halves or parts are preferably fastened to the hub by
means of bolts and nuts each adjacent halves or parts of the said springs being
bolted to a wrought iron rib piece or projection cast into a recess in the hub of
the wheel
When the rim is driven by a positive motion directly imparted to the rim so as
to take the driving strain off the wheels we effect this by means of a crank arm
on one or both sides of the wheel the said arm or arms at the inner end being
formed with or fastened to a plate bolted or otherwise fastened to the hub of the
wheel and the outer end or ends being connected to the rim of the wheel by a
crank pin working in a radial slot or slots in bracket pieces formed on or attached
to the rim. The said crank arm or arms may be formed in one with the spur
gearing used to drive the Engine
And in order that our said Invention may be fully understood we shall now
proceed more particularly to describe the same and for that purpose shall refer to
the annexed drawings
The accompanying drawing illustrates in elevation a spring wheel made
according to our Invention. The rim of the wheel is marked A and the hub or
boss B the springs C which connect them being each in halves or parts having
turned in ends c at their outer parts by which they are secured to the rim A. by
means of a clamping fastening consisting of a bed piece i and a bearing or clip
piece. Through the pieces i and j and the rim A a bolt or bolts (k) is or are
passed and a nut or nuts (2) screwed upon the said bolt or bolts & firmly nips the
turned in ends c² of each two parts or adjacent halves of the springs C between the
bed piece and the bearing piece ; and thus secures the said springs C to the rim A
without bolt holes in the springs at this part. There may be one or more of the
fastening pieces for each adjacent halves of the springs and the halves or parts of
the springs C may be formed of one or more leaves or layers. The inner ends of
the said halves or parts of the springs are shewn as being. fastened to the hub B
by means of bolts and nuts each adjacent halves or parts of the said springs C
being bolted to a wrought iron rib piece or projection m cast into a recess in the

page_text: hub of the wheel. In the said drawing we have also shewn our arrangement for
driving the rim by a positive motion directly imparted thereto so as to take the
driving strain off the springs. A crank arm D³ is provided on one or both sides
of the wheel the said arm or arms at the inner end being fastened to a flange Da
cast or otherwise fastened to the hub of the wheel the outer end or ends being
connected to the rim of the wheel by a crank pin E working in a radial slot or
Blots fin bracket pieces F formed on or attached to the rim A. The said crank
arm or arms (or the plate or plates if such be used in place of a simple arm or
arms) D³ may be formed in one with the spur gearing wheel used to drive the
engine or vehicle
Having now described and particularly ascertained the nature of our said
Invention and the manner in which the same is or may be used or carried into
effect we would observe in conclusion that what we consider to be novel and
original and therefore claim as the Invention secured to us by the hereinbefore in
part recited letters patent is.
First. Constructing wheels for traction engines or other purposes with spring
spokes each formed in parts with turned in or bent end portions and connecting
them to the rim of the wheel by a clamp or clamps without the necessity for bolt
holes through the springs substantially as hereinbefore described and illustrated in
the accompanying drawing.
Second. In wheels for traction engines or other purposes connecting the inner
ends of the spring spokes to the boss by means of pieces m and bolts and nuts las
herein before described and illustrated in the accompanying drawing
Third In wheels for traction engines or other vehicles forming the plate or
plates or crank arm or arms which drive the rim in one with the spur gearing wheel
as hereinbefore described
Fourth. The arrangement and combination of parts constituting the wheel for
traction engines or other purposes hereinbefore described and illustrated in the
accompanying drawing
In witness whereof we the said John McLaren and Henry McLaren have to this
our Specification set our hands and seals this twenty second day of September One
thousand eight hundred and eighty three