AN IMPROVED CRANK AXLE FOR RAILWAY AND OTHER ENGINES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I WILLIAM CORTEEN of 41 North Church Street Sheffield in the County of
York Carriago Maker do hereby declare the nature of my invention for "AN
IMPROVED CRANK AXLE FOR RAILWAY AND OTHER ENGINES" to be as follows:-
The object of my Invention is to strengthen the Cranks which form part of the
Axle and so as to avoid the liability to breakage.
To effect this, whilst the parts are in a proper state of heat for the purpose and
being joined together or "dabbed on," I insert and push a Rod so as to punch a
hole through the centre of the long Arms of the Crank, and I then substitute therein
a Tube, which, as the material cools, becomes, by expansion and otherwise, welded
to the Crank.
To avoid vibration or movement of the Tube, and to ensure the welding of same
to the Crank, I at once, after insertion of the Tube, press the latter at each end
firmly to the Crank by means of punches, which are tapered at the end, and
I thereby widen a little the portions of the Tube where the punches are
driven in.
Any protruding ends of the Tube are then broken off, and by means of this
Tube being inserted as aforesaid, the weakness of the long Arm of the Crank,
whether created by the cross-grain of the metal or otherwise, is thereby obviated
and the Axle supported throughout.
The accompanying Drawings illustrate the application of my Invention.
Figure 1 shows the Axle generally and
Figure 2 an enlarged form of the Crank to same.
Like letters of reference where such letters appear indicate corresponding parts
in the Drawings.
Letter A indicates the weak part of the Crank as at present, the object of my
Invention being to counteract this weakness as stated.
Letters B and C shew the ends of the long Arm, through the whole length of
which the Tube is inserted after the Rod first pushed through has been withdrawn,
and I usually make the Tube from one and a half to two inches in diameter-The
Rod and the punches are made of corresponding sizes for the purposes aforesaid,
and I shape the Tubes round or oval as 1 find most suitable for the particular Crank.
employed.
1

page_text: I WILLIAM CORTEEN of 41, North Church Street Sheffield in the County of
York Carriage Maker do hereby declare the nature of my invention for "AN
IMPROVED CRANK AXLE FOR RAILWAY AND OTHER ENGINES" and in what
manner-the-same-is_to_be_performed, to be particularly described and ascertained
in and by the following-statement.:-
-
The object of my Invention, is to strengthen the Cranks which form part of the
Axle, and so as to avoid the liability to breakage.
To effect this, whilst the parts are in a proper state of heat for the purpose and
-being-joined together or "dabbed on," I insert and push a rod so as to punch a
hole through the centre of the long arms of the Crank,-and I then substitute
therein a Tube, which, as the material cools becomes by expansion and otherwise,
welded to the Crank.
To avoid vibration or movement-of-the Tube, and to ensure the welding of same
to the Crank, Tat once, after insertion of the Tube, press the latter-at-ench-end-
firmly to the Crank by means of punches which are tapered at the end and
I thereby widen a little the portions of the Tube where the punches are
driven in.
Any protruding ends of the Tube are then broken off, and by means of this tubo
being inserted as aforesaid, the weakness of the long arm of the Crank, whether
created by the cross grain of the metal or otherwise, is thereby obviated and the
axle supported throughout.
The Drawings filed with my Provisional Specification illustrate the application
of my Invention. Referring to them
Figure 1 shews the Axle generally and Figure 2 an enlarged form of the Crank
to same.
Like letters of reference, where such letters appear, indicate corresponding parts
in the Drawings.
Letter A indicates the weak part of the Crank as at present, the object of my
Invention being to counteract this weakness as stated.
Letters B and C shew the ends of the long arm, through the whole length of
which the Tube is inserted after the Rod first pushed through has been withdrawn,
and I usually make the Tube from one and a half to two inches in diameter-the
rod and the punches are made of corresponding sizes for the purposes aforesaid, and
I shape the Tubes round or oval as I find most suitable for the particular Crank
employed.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
First. The insertion into the Crank parts of Axles, whilst all the parts are hot,
of tubes which 1 then expand at the ends as the substance is cooling, and by this

page_text: means the tubes become permanent fixed supports to the Crank Axle, which is
thereby considerably strengthened.
"
Second. The general improvements in Crank Axles for the purposes of Railway
and other Engines as herein substantially described and set forth.
Dated this Thirtieth day of January one thousand eight hundred and eighty