IMPROVED MOULD FOR AND PROCESS OF MANUFAC- TURING CAST STEEL CHAINS
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by John Edward Walsh at the Office of
the Commissioners of Patents on the 15th December 1879. A communication
from abroad by the Hagener Guss Stablwerke Company, of Hagen, in
Westphalia.
JOHN EDWARD WALSH, of Halifax, in the County of York, Patent Agent and
Mechanical Draughtsnian "IMPROVED MOULD FOR AND PROCESS OF MANUFAC-
TURING CAST STEEL CHAINS." A communication from abroad by the Hagener
Guss Stahlwerke Company, of Hagen, in Westphalia.
This process is intended for the production of cast-steel chains, to wit, the
promiscuous casting of chain links.
The mode of procedure is as follows :-
Plaster models in the shape of Figure D, as shown in the annexed Drawing, are
produced by means of a casting mould or press, and these models after being dried
and burnt are laid by twos in the lower half of a suitably prepared casting mould,
as per Figures A, B, and C.
Before the two halves of the mould are put together the previously cast separate
chain links which are required to be joined together are placed in the respective
hollows of the models and casting box, then the two halves of the mould are united
after previously cutting a pouring hole in upper one by means of wedges, and the
mould is ready for the casting process.
It is of course understood that, instead of the specially made iron casting moulds
used for the foregoing process, ordinary casting moulds or frames can be applied, in
which case the hollowings for the models are produced in sand by a shaped wooden
block.
It is likewise understood that by the foregoing process chains without studs can
also be produced.
Specially advantageous is the fact that by this process only the model of a fourth
of the chain-link to be cast is required for placing in the casting mould or press
used for the plaster models; further, that the real casting moulds are made
exceedingly quickly, and the cast itself can be separated very expeditiously and
easily from the mould, a circumstance of great practical importance in consideration
of the important shrinkage of the steel while cooling.

page_text: PROVISIONAL SPECIFICATION left by John Edward Walsh at the Office of
the Commissioners of Patents on the 15th December 1879. A communication
from abroad by the Hagener Guss Stahlwerke Company, of Hagen, in
Westphalia.
JOHN EDWARD WALSH, of Halifax, in the County of York, Patent Agent and
Mechanical Draughtsman. "IMPROVED MOULD FOR AND PROCESS OF MANUFAC-
TURING CAST STEEL CHAINS." A communication from abroad by the Hagener
Guss Stahlwerke Company, of Hagen, in Westphalia.
This process is intended for the production of cast-steel chains, to wit, the
promiscuous casting of chain links.
The mode of procedure is as follows :—
Plaster models in the shape of Figure D, as shown in the annexed Drawing, are
produced by means of a casting mould or press, and these models after being dried
and burnt are laid by twos in the lower half of a suitably prepared casting mould,
as per Figures A, B, and C.
Before the two halves of the mould are put together the previously cast separate
chain links which are required to be joined together are placed in the respective
hollows of the models and casting box, then the two halves of the mould are united
after previously cutting a pouring hole in upper one by means of wedges, and the
mould is ready for the casting process.
It is of course understood that, instead of the specially made iron casting moulds
used for the foregoing process, ordinary casting moulds or frames can be applied, in
which case the hollowings for the models are produced in sand by a shaped wooden
block.
It is likewise understood that by the foregoing process chains without studs can
also be produced.
Specially advantageous is the fact that by this process only the model of a fourth
of the chain-link to be cast is required for placing in the casting mould or press
used for the plaster models; further, that the real casting moulds are made
exceedingly quickly, and the cast itself can be separated very expeditiously and
easily from the mould, a circumstance of great practical importance in consideration
of the important shrinkage of the steel while cooling.