A System or Mode of Manufacturing various kinds of Disc Wheels for Railways, Tramways, and other purposes.
Year: 1892

page_text: Date of Application, 10th Oct, 1892
Complete Specification Left, 25th Oct., 1892-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
A System or Mode of Manufacturing various kinds of Disc Wheels
for Railways, Tramways, and other purposes.
THOMAS HARTLEY Bushley House 155 Hamstead Road Handsworth near
Birmingham Mechanical Engineer do hereby declare the nature of this invention
to be as follows:-
This invention consists in the mode of manufacturing various kinds of disc.
wheels with or without steel tyres, for railways tramways & other purposes.
I claim that the system is quite new & has been successfully carried out by me
during the last two months at the Patent (Works of) Shaft & Axletree Co.
Wednesbury an order for the South Indian Government & I claim they are the
first disc wheels successfully made in England upon the principle herein set forth.
1st. I proceed in the following manner.-I take a plate of either steel or iron
the diameter of the disc required & on each side of the plate in the centre I
place a washer to form the boss & on the outer diameter of the plate I place
a ring on each side to form the rim as shown in Figure A. All the parts are
then heated to a welding heat & welded together in a die or dies either by
hammering pressing or rolling at one heat & finished to the required shape at one
operation.
2nd. I have a rim rolled the required section with a projection on the inner'
side. I then take a plate large enough in size to overlap the inner projection
of the rim as shown in Figure B. To form the boss I proceed as in Figure A
& described in process one.
3rd. I have a rim rolled as in process two & a boss stamped or pressed with
an outer projection I then take a plate large enough to overlap the inner pro-
jection on rim & the outer projection on boss as shown in Figure C. the whole
is then welded up as described in process one.
4th. I have a rim rolled as in process two & three I then take an ingot &
insert it through a hole in the plate as shown in Figure D & E. I then proceed
as described in one & two.
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T. HARTLEY.
COMPLETE SPECIFICATION.
A System or Mode of Manufacturing various kinds of Disc Wheels
for Railways, Tramways, and other purposes.
THOMAS HARTLEY "Bushley House" 155 Hamstead Road Handsworth near
Birmingham Mechanical 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, reference being made to the
drawings filed with my Provisional Specification
:-
This invention consists in the mode of manufacturing various kinds of disc
centres for wheels with or without steel tyres used for railways, tramways & other
purposes.
1st. I proceed in the following manner:-I take a plate (b) of either steel or
iron the diameter & thickness of the disc centre required (with allowances for
working the same) & on each side of the plate in the centre I place a washer (c) to
form the boss & on the outer diameter of the plate I place a ring (a) on each side
to form the rim as shown in Figure A on drawing. All the parts are then heated
n.
.)

page_text: to a welding heat & welded together in a die or dies either by hammering pressing
or rolling at one heat & finished to the required shape at one operation.
2nd. I have a rim (a a) rolled the required section with a projection on the inner
side. I then take a plate (b) large enough to overlap the inner projection of the
rim as shown in Figure B on drawing. To form the boss I proceed as in Figure A
on drawing, the whole is then welded up as described in process one.
3rd. I have a rim rolled as in process two & a boss (cc) stamped or pressed with
an outer projection corresponding with the inner projection on rim. I then take a
plate (b) large enough to overlap the inner projection on rim & the outer pro-
jection on boss as shown in Figure C on drawing. The whole is then welded up
as described in process one.
4th. I proceed as in process one to form rim (a) & body (b) but to form the boss
I take an ingot or forging (d) & insert it through a hole in plate (b) which forms
the body as shown in Figure D on drawing. The whole is then welded up as
described in process one.
5th. I have a rim (a a) rolled as described in process two & three I then take a
plate (b) large enough to overlap the inner projection on rim & through a hole in
the centre of the plate (b) I insert an ingot or forging (d d) large enough to form
the boss as shown in Figure E on drawing. The whole is then welded up as
described in process one.
6th. In order to make a very strong & rigid web or body of disc centre I take
two plates half the required thickness & place them together with the grain of the
iron or steel running in opposite directions as shown in Figure F on drawing.
I then proceed as described in process one.
It will be seen that the various modes described in processes 1. 2. 3. 4. 5. & 6
& shown on Figures A. B. C. D. E & F on drawing may be modified in carrying
out the same without departing from the invention.
I have shown in Figure G on drawing a disc centre after having been stamped
& finished which is fitted with a steel tyre & clip ring.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same may be performed I declare that what I
claim is
A new & simple method of building up & arranging the various parts for the
making of disc centres for wheels. I also claim that the various parts can be all
welded up at one heat & finished at one operation as herein described. The system
has been successfully carried out by me at the Works of the Patent Shaft &
Axletree Co. Limited Wednesbury on an order for the South Indian Government.
I am aware that disc wheels are being made in Germany but upon quite a different
system. I am also aware that various attempts have been made in England to
stamp disc centres from an ingot of steel or iron but without success. Having had
thirty years experience as Manager of Wheel Works I claim that they are the first
disc centres for wheels successfully made in England upon the principle herein set
forth.
In witness thereof I the said Thomas Hartley set my hand dated this 22nd
dex of October 1909
THOMAS HARTLEY.