for Ships, Cranes, and similar Purposes.
Year: 1885

page_text: for Ships, Cranes, and similar Purposes.
I, CHARLES DENTON ABEL, of No 28 Southampton Buildings in the county of
Middlesex, Consulting Engineer and Patent Agent, do hereby declare the nature of
my invention for "IMPROVEMENTS IN MACHINERY FOR MANUFACTURING HEAVY
CHAINS FOR SHIPS, CRANES AND SIMILAR PURPOSES' to be as follows:-
"
This invention relates to an improved machine for manufacturing heavy chains
for ships, cranes and other purposes.
In describing the invention reference will be had to the accompanying drawings
of which Fig. 1 represents a longitudinal section of the machine on the line O. P. of
Fig. 2 Fig. 2 is a top view and Fig. 3 a cross section of Fig. 2 on the line R. S.
Similar letters of reference indicate corresponding parts.
The machine consists of a cast iron under frame supporting a plate or table
provided with two guide bars between which two slide-carriages c and d are made
to move in opposite directions, being for this purpose geared together by means of
two toothed segments f taking into each other and into racks e on the carriages.
On the extremity of each carriage, that is to say, on the side where the carriages
approach one another a half mould is attached. By pressing the two parts of the
mould one against the other the link his formed and welded; the auxiliary
moulds i have for their purpose to smooth the joint. One end of the carriage dis
fastened by means of three screws k to a plate l which carries the eccentric m lying
in the line of pressure. The pressure necessary for welding the link his transmitted
by the cross head n pressing against the eccentric m. On the extremity of the
sliding carriage d on each side thereof are two screw-bolts o passing in a loose
manner through the cross head n which bolts while formning the necessary
connection between the two parts serve to allow of the varying relative positions
thereof due to the varying positions of the eccentric the crosshead being made to
move the carriages into the backward position after they have dwelt for a short

page_text: time in the forward position. By operating the crank-handle p connected by a
steel spindle to the eccentric m the power to be transmitted by the motor will be
regulated.
The manufacture of the chains is effected as follows:
The piece of round iron having been formed as shewn in the drawing, which is
easily done by a simple operation, the two extremities thereof are heated to a
welding heat and are quickly placed between the two cheeks g of the mould,
between which the preceding link is suspended. The eccentric m is now turned by
means of the crank p, so that the cross head n will exert on m a pressure whereby
the two segments f will move the sliding carriages c and d towards each other. The
link to be made is hereby pressed into the mould and suitably shaped and the two
ends thereof strongly pressed together, so that the link will be welded on the
longitudinal side. A more intimate connection of the joint is obtained by repeating
the pressure, the effect whereof may be made more intense by a suitable position of
the eccentric m. The link is now rapidly raised and brought in a vertical position
between the two auxiliary moulds while the joint is still red-hot. The eccentric m
is now placed in such a position that on again applying pressure the surplus metal
forced out of the joint will be pressed away. The upper end of the chain is wound
upon a pulley arranged above the machine so that it may be easily operated with
when welding the link.
Th
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: for Ships, Cranes, and similar Purposes.
I, CHARLES DENTON ABEL, of N° 28 Southampton Buildings, Chancery Lane in
the County of Middlesex, 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 :-
This invention relates to an improved machine for manufacturing heavy chains
for ships, cranes and other purposes, the construction of which is shewn on the
accompanying drawings of which Fig. 1 represents a longitudinal section of the
machine on the line O. P. of Fig. 2; Fig. 2 is a top view and Fig. 3 a cross section
of the Fig. 2 on the line R S.
Similar letters of reference indicate corresponding parts.
The machine consists of a cast iron under frame supporting a plate or table
provided with two guide bars between which two slide-carriages c and d are made
to move in opposite directions, being for this purpose geared together by means of
two toothed segments f taking into each other and into racks e on the carriages.
On the extremity of each carriage, that is to say, on the side where the carriages
approach one another a die y is attached. By pressing the two dies gg one against
the other the link his formed and welded; another pair of dies ii has for its
purpose to smooth the joint. One end of the carriage d is fastened by means of
three screws k to a plate which carries the eccentric m lying in the line of
pressure. The pressure necessary for welding the link his transmitted by the cross
head n pressing against the eccentric m. On the extremity of the sliding-carriage d,
on each side thereof, are two screw bolts o passing in a loose manner through the
cross-head n, which bolts, while forming the necessary connection between the two
parts, serve to allow of the varying relative positions thereof due to the varying
position of the eccentric, the cross head being made to move the carriages into the
backward position after they have dwelt for a short time in the forward position.
By operating the crank handle p connected by a steel spindle to the eccentric m
the power to be transmitted by the motor may be regulated.
The manufacture of the chains is effected as follows:-
The piece of round iron having been formed as shewn in the drawing, which is
easily done by a simple operation, the two extremities thereof are heated to a
welding heat and are quickly placed between the two cheeks g of the mould,
between which the preceding link is suspended. The eccentric m is now turned
by means of the crank p, so that the crosshead n will exert on m a pressure
whereby the two segments f will move the sliding carriages c and d towards each
other. The link to be made is hereby pressed into the mould and suitably shaped
and the two ends thereof strongly pressed together, so that the link will be welded
on the longitudinal side. A. more intimate union of the joint is obtained by
repeating the pressure, the effect whereof may be made more intense by a suitable
position of the eccentric m. The link is now rapidly raised and brought in a
vertical position between the two dies ii while the joint is still red-hot. The
eccentric m is now placed in such a position that on again applying pressure the
surplus metal forced out of the joint will be pressed away.

page_text: The dies i have a somewhat oval form in order to receive the unfinished joint,
these dies therefore do not impart to the link a perfectly round shape, this being
effected by another pair of dies . In order to prevent the link from being
flattened by the pressure in the principal dies g g and thus have its shape spoilt,
the dies are formed with a half round groove corresponding to the thickness of the
round bar iron used for making the chain. The finished part of the chain is wound
upon a pulley arranged above the machine so that it may be easily operated with
when welding the link.
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 in respect of machinery for manufacturing heavy chains is
1. The arrangement of the two sliding carriages c and d moved uniformly by the
segments and provided with the dies g, and i¹ for bending, welding, and
smoothing the link substantially as herein described with reference to the
accompanying drawings.
2. The arrangement of the eccentric m provided with the crank P, and serving
to regulate the pressure and to put the two sliding carriages c and d in and out of
action, substantially as herein described with reference to the accompanying
drawings.
3. The arrangement of the two screw bolts o passing loosely through the cross
head n, so that the sliding carriages c and d, when moved. towards each other, will
be drawn back again after a short rest, substantially as herein described with
reference to the accompanying drawings.