Year: 1888

page_text: Date of Application, 10th Aug., 1888
Complete Specification Left, 28th Jan.. 1889
Complete Specification Accepted, 9th Mar., 1889
RESERVE
I CHARLES CHALLINER of 19 Thomson Street Ardwick Manchester in the County
of Lancaster Manager do hereby declare the nature of this invention to be as
follows:-
My invention relates to the manufacture of channel iron or steel, of a dovetailed
or other undercut section in order to secure therein rings or bands of india rubber or
other yielding material or composition as practised in the manufacture of what are
known as Noiseless Tyres" for wheels.
"
In the manufacture of channel iron or steel for this purpose with round or square
beads on the inside of the upper edge of the groove so as to form by rolling an undercut
section with vertical sides and flat base, I form the first groove of the rolls in such a
way that the flattened billet of iron steel or other suitable metal, when passed
through, will be set down on each side of the intended flanges of the channel
leaving the base of the desired width but a little thicker, and forming a shoulder
at each point.
The second groove reduces the thickness of both base and sides (the latter being
splayed out) and brings the beads fully up to the required size and form leaving the
base perfectly square and still stronger than the sides.
I then turn over the bar and put it into a third groove in the rolls, which
partly turns up the two flanges, holding the base perfectly flat, but not altering
the bead.
I then put the bar through a fourth groove which is similar to an ordinary channel
groove but with the inner roll turned sufficiently narrow to pass between the beads
and thus bring the channel iron to square or right angles outside, the beads on the
inside forming an undercut section for the purpose of holding the rubber or other
yielding material firmly.
For manufacturing channel iron or steel for the above purpose of a dovetailed
section I first roll an ordinary channel bar with flat base and vertical sides, and I then
bend in the sides without rolling by the following means.

page_text: I make a groove across the face of the anvil of the steam or other power hammer,
such groove being of the required V- or dovetailed form on the exterior and having a
tongue or projection in the centre of such groove of such a form as will support the
inside of the base and keep it flat and of such a width as will give the required width
of the mouth of the dovetail.
The square sided channel bar having been heated one end thereof is placed (base
upwards) over the said groove in the anvil block and the hammer block being brought
down will force the same into the V-groove and thus bend in the sides so as to form
the required dovetail section.
The hammer is kept in rapid motion and the bar drawn along continuously through
the groove to the other end; or the bar may be dovetailed to the width of the anvil
block at one blow and the hammer raised and the bar then drawn along another
length and the hammer brought down again and so on.
may here observe that (if preferred) the V-groove and tongue may be made in
the face of the hammer block, in which case the bar will be worked base downwards on
a flat anvil block. Or instead of percussion any suitable pressure may be brought to
bear to force the square sided channel bar into the V-groove so as to bring in the sides
and give it the required dovetail form without rolling.
This part of my invention is also applicable for the purpose of making channel
iron, or steel with curved or bulged (instead of dovetailed) sides which will overhang
the felloe of the wheel so as to prevent the same from damage by curb stones or other
similar obstructions, the inner curve of the sides forming an undercut section to retain
the rubber or other material.
For this purpose I have an anvil with a curved groove of the same shape as the
outside of the required flanges, and at the bottom of the same in the centre I have a
tongue to fit the inside of the section, with the upper edge of a suitable shape,
and undercut at the root at both sides somewhat in the shape of what is known
as a "bull-head" rail, which allows the top edges of the flanges to be bent
inwardly.
The bar is first rolled in a groove somewhat like the second named groove on
the first page hereof but without the beads. This bar is drawn endwise through
the groove in the anvil and the percussion or pressure being brought to bear at
the same time which will produce the required undercut section with curved or
bulged sides.
Bated th: out
P
1000
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: I CHARLES CHALLINER of 19 Thompson Street Ardwick Manchester in the County
of Lancaster 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 relates to the manufacture of channel iron or steel of a dovetailed
or other undercut section in order to secure therein rings or bands of india rubber
or other yielding material or composition as practised in the manufacture of what
are known as "noiseless tyres" for wheels.
The nature of my said invention and the manner in which the same is to be
performed will be readily understood on reference to the annexed sheet of drawings,
marked with Figs. and letters of reference corresponding with those in the following
explanation thereof.
In the manufacture of channel iron or steel for this purpose with round or square
beads on the inside of the upper edge of the groove so as to form by rolling an
undercut section with vertical sides and flat base, I form the first groove of the rolls
in such a way (as shown at a Fig. 1. of the annexed drawings) that a flattened billet
of iron steel or other suitable metal, when passed through, will be set down on
each side of the intended flanges of the channel leaving the base a¹ of the desired
width but a little thicker, and forming a shoulder at each point.
The second groove b reduces the thickness of both base and sides (the latter being
splayed out) and brings the beads 61 fully up to the required size and form leaving
the base a perfectly square and still stronger than the sides.
I then turn over the bar and put it into a third groove c in the rolls which
partly turns up the two flanges, holding the base a' perfectly flat, but not altering
the bead b'.
I then put the bar through a fourth groove d which is similar to an ordinary
channel groove but with the inner roll turned sufficiently narrow as shown at d¹ to pass
between the beads b¹. I thus bring the channel iron to square or right angles outside,
the beads 6' on the inside forming an undercut section for the purpose of holding
the rubber or other yielding material firmly.
For manufacturing channel iron or steel for the above purpose of a dovetailed
section I first roll an ordinary channel bar with flat base and vertical sides, and I
then bend in the sides without rolling by the following means.
I make a groove e across the face of the anvil f of the steam or other power
hammer as shown in section at Fig. 2. such groove being of the required V- or dove-
tailed form on the exterior and having a tongue or projection g in the centre of such
groove of such a form as will support the inside of the base a¹ of the section, and
keep it flat and of such a width as will give the required width of the mouth of
the dovetail.

page_text: The square sided channel bar having been heated, one end thereof is placed (base
upwards) over the said groove e in the anvil block as shown by the dotted lines in
Fig. 2 and the hammer block being brought down will force the same into the
V-groove e and thus bend in the sides so as to form the required dovetail section
as shown. The hammer is kept in rapid motion and the bar drawn along continuously
through the groove to the other end; or the bar may be dovetailed to the width of
the anvil block at one blow and the hammer raised and the bar then drawn along
another length and the hammer brought down again and so on.
I may here observe that (if preferred) the V-groove c and tongue g may be made
in the face of the hammer block, in which case the bar will be worked base downwards
on a flat anvil block. Or instead of percussion any suitable pressure may be brought
to bear to force the square sided channel bar into the V-groove so as to bring in the
sides and give it the required dovetail form without rolling.
This part of my invention is also applicable for the purpose of making channel iron,
or steel with, curved or bulged (instead of dovetailed) sides which will overhang the
felloe of the wheel so as to prevent the same from damage by curb stones or other
similar obstructions the inner curve of the sides forming an undercut section to retain
the rubber or other material.
For this purpose
I have an anvil with a curved groove h Fig. 3 of a suitable shape
to form the outside of the required flanges and at the bottom of the same in the
centre I have a tongue i to fit the inside of the section, with the upper edge of a
suitable shape, and undercut at the root at both sides somewhat in the shape of what
is known as a "bull-head" rail, which allows the top edges of the flanges to be bent
inwardly for clipping the base of the rubber as shown at Fig. 5.
The bar is first rolled in a groove somewhat like the second named groove b on Fig. 1.
but without the heads (see Fig. 4). This bar is drawn endwise through the groove
in the anvil and the percussion or pressure being brought to bear at the same time
will produce the required undercut section with curved or bulged sides.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is :-
First. The improved manufacture of undercut grooved metal tyres (for wheels)
having vertical sides with a bead on the inner and upper margin thereof, without
bending the base substantially in the manner and by means of the grooved rolls
herein before described with reference to Fig. 1. of the annexed drawings, and,
Secondly. The improved manufacture of undercut grooved metal tyres (for wheels)
having a flat base and V-shaped or bulged sides by means of either percussion or
pressure in combination with suitably shaped grooves or swages formed either in an
anvil block or in a hammer block, substantially as herein before described and illustrated
by Figs. 2. 3. and 4 on the drawings annexed.
Dated this 26th day of January 1889.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.