Improvements in Joining Aluminium and its Alloys to Steel or Iron, and the Application of the same to the Construction of Cycle Frames.
Year: 1897

page_text: Date of Application, 14th Dec., 1897
Complete Specification Left, 13th Sept., 1898-Accepted, 14th Mar., 1899
PROVISIONAL SPECIFICATION.
Improvements in Joining Aluminium and its Alloys to Steel or Iron,
and the Application of the same to the Construction of Cycle
Frames.
I, HARRY WILLIAM NEILD, of 89, Blackheath Road, in the County of Kent,
Engineer, do hereby declare the nature of this invention to be as follows:-
a flux
In order to connect aluminium and its alloys to steel or iron I first galvanize
the steel or iron by the ordinary galvanizing process of dipping through
into a bath of molten zinc thereby the surface of metal of steel or iron is caused
to enter into combination with zinc. I then coat the two surfaces to be joined viz.
The aluminium and the steel or iron with a solder consisting mainly of zinc but
preferably containing 5 % of aluminium.
I effect this coating by rubbing the solder upon the piece to be coated when
the same has been sufficiently heated.
Thus in order to join an aluminium tube to a steel socket or lug I galvanize
the socket or lug and then coat the interior with the zine solder. The end of
the aluminium tube I likewise coat with the solder. I then force the tube into the
socket or lug into which it should fit nicely and finally I heat the parts to the
fusing points of the solder. In this way a very strong joint is obtained.
In making the ends of the rear fork of the bicycle I employ an aluminium tube
and I flatten the two parts in the same way as is usual when steel tubes are
employed and the usual provision is made to receive the spindle of the wheel. I
strengthen the fork so obtained by inserting a band or strip of steel into each
limb of the fork. I galvanize the steel strip and coat it with zinc solder. I
prepare the ends of the aluminium fork with the same solder and insert the steel
between the flattened parts of the aluminium fork I press the parts firmly and
apply heat sufficient to fuse the solder.
Dalhin 1441 low of December 1807
Improvements in Joining Aluminium and its Alloys to Steel or Iron,
and the Application of the same to the Construction of Cycle
Frames.
I, HARRY WILLIAM NEILD, of 89, Blackheath Road, in the County of Kent,
Engineer, do hereby declare the nature of this invention and in what manner the
n
037

page_text: same is to be performed, to be particularly described and ascertained in and by
the following statement;
In order to connect aluminium and its alloys to steel or iron I first galvanize
the steel or iron by the ordinary galvanizing process of dipping through a flux
into a bath of molten zinc thereby the surface of metal of steel or iron is caused
to enter into combination with zinc. I then coat the aluminium with a solder
consisting mainly of zinc but preferably containing 95 % of zinc and 5% of
aluminium.
I effect this coating by rubbing the solder upon the piece to be coated when
the same has been sufficiently heated.
Thus in order to join an aluminium tube to a steel socket or lug I galvanize
the socket or lug and coat the end of the aluminium tube with the solder. I
then force the tube into the socket or lug into which it should fit nicely and
finally I heat the parts to the fusing points of the solder. In this way a very
strong joint is obtained.
In Figure 1 the joints A B C D are made in this way.
In making the ends of the rear fork E of the bicycle I employ an aluminium
tube and I flatten the two parts in the same way as is usual when steel tubes are
employed and the usual provision is made to receive the spindle of the wheel I
strengthen the fork so obtained by inserting a band or strip F (Figures 2 and 3)
of steel into each limb of the fork I galvanize the steel strip and prepare the
ends of the aluminium fork with the solder and insert the steel between the
flattened parts of the aluminium fork I press the parts firmly and apply heat
sufficient to fuse the solder.
Figures 4, 5 and 6 show the end A' of the back stay made in a similar manner.
The iron or steel after being galvanized may be coated with the solder but this
is not necessary.
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 I
claim is :-
1. Joining aluminium and its alloys to steel or iron by coating it with a solder
consisting mainly of zinc, galvanizing the iron or steel, pressing the two together
and heating them.
2. Joints for cycle frames substantially as described and illustrated in the
drawings.
Dal 1041
1 1000