Form Ship Beams and for other Purposes..
Year: 1888

page_text: Date of Application, 18th Jan., 1888
Complete Specification Left, 17th Oct., 1888
Complete Specification Accepted, 14th Dec., 1888
Form Ship Beams and for other Purposes..
I, ROBERT DUNCAN, Junior, of Alderwood, Port Glasgow, in the County of
Renfrew, North Britain, Shipbuilder, do hereby declare the nature of this Invention to
be as follows, that is to say :-
My said Invention has for its object to provide improved, simple, powerful, and
compact machinery for bending iron or steel bars to form ship beams and for other
purposes. An important application of the Invention is for bending the ends of
"bulb "-section bars to form knees upon the ship beams made of such bars; but the
Invention is also applicable for bending bars, whether comparatively flat or with
angles, and of various sections, to be used in forming structures of various kinds.
In carrying out my Invention I employ a massive bed plate or block of a generally
flat horizontal form but with a raised part across one end. On the bed plate there is
centered on a vertical pin a thick horizontal plate in the form of a sector with an
enlarged centre part; and the top of this sector plate is made flush with the top of the
raised part of the bed plate. Gearing is provided for moving the sector plate round
in either direction on the centre pin, and may be arranged to be worked by hand or by
power. In a convenient modification the gearing which is arranged on a pedestal
comprises a shaft having one or more winch handles, a worm on the shaft gearing
with a wormwheel on a vertical shaft, and a pinion on the lower end of the vertical
shaft and gearing with teeth formed on the sector plate. The sector plate and the
raised part of the bed plate have holes formed in them in a variety of positions for
dogs or claw bolts and screw bolts for securing various sizes or forms of beams or bars.
The centre pin projects above the surface of the sector plate and a ring of a suitable
size is put on it in each case. When a beam or bar is to be bended it is, after being
heated, placed on the machine and secured by dogs or bolts to the bed plate and sector
plate so as to be at one side of the centre pin; and then the sector plate is turned so
as to bend it more or less round the centre pin as required, hammers being at the
same time used if necessary to level down any parts which may tend to rise.
Dated this Cawantaanth day of Tanna 1000
EDMUND HUNT,
Applicant's Agent.

page_text: Form Ship Beams and for other Purposes.
I, ROBERT DUNCAN, Junior, of Alderwood, Port Glasgow, in the County of
Renfrew, North Britain. Shipbuilder, 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, that is to say :-
My said Invention has for its object to provide improved, simple, powerful, and
compact machinery for bending iron or steel bars to form ship beams and for other
purposes. An important application of the Invention is for bending the ends of
"bulb "-section bars to form knees upon the ship beams made of such bars; but
the Invention is also applicable for bending bars, whether comparatively flat or with
angles, and of various sections, to be used in forming structures of various kinds.
In carrying out my Invention I employ a massive bed plate or block of a generally
flat horizontal form but with a raised part across one end. On the bed plate there is
centered a thick horizontal plate in the form of a sector with an enlarged centre part;
and the top of this sector plate is made flush with the top of the raised part of the bed
plate. Gearing is provided for moving the sector plate round in either direction and
may be arranged to be worked by hand or by power.
And in order that my said Invention and the manner of performing the same may
be properly understood I hereunto append a sheet of explanatory drawings to be
hereinafter referred to and representing a convenient modification of my improved
bending machine.
Figure, 1, on the sheet of drawings is a plan and figure, 2, is a side elevation of
the machine. Figure, 3, comprises a plan and elevation of a detail. In these drawings
the same reference letters are used to mark the same or like parts wherever they are
repeated.
The machine comprises a massive bed plate, A, made with its top surface horizontal
but with a part, B, at a higher level. Upon the bed plate, A, there is placed a
horizontal sector plate, C, in which there is fixed a centre pin, D, fitted to turn in a
centre eye in the bed plate, A. The centre pin, D, may be fixed in the bed plate, A,
and the sector plate, C, be arranged to turn round it, I however prefer to have the
centre pin turning with the sector plate. A washer or cap, E, is fixed on the centre
pin, D, and being of larger diameter than the pin serves to prevent a bar or beam, F,
which is being bended, from rising above the pin. The sector plate, C, and the raised
part, B, of the bed plate are made with holes in a variety of positions for receiving dogs
or claw bolts, G, and pins or bolts, H, for securing various sizes or forms of beams or
bars, F. In the drawings the beam, F, is shown as already bended or partly bended,
it having been secured in its unbended condition after having been suitably heated, by
the dogs, G, and pins, H, and the sector plate, C, having been turned to the extent of
half the movement of which it is capable. In the example delineated the sector
plate, C, is turned by means of spur teeth, J, formed on its circumferential part (or, it

page_text: might be, on a piece fixed to it) these spur teeth being in gear with a pinion, K,
on a vertical shaft, L, carried by a pedestal frame, M. The vertical shaft, L, has
also fixed on it a wormwheel, N, which is turned by a worm, P, on a shaft, Q,
having on it a spurwheel, R, driven by a pinion, S, on a first-motion shaft, T,
which may be driven by means of pulleys and belts or in any other convenient way.
During the bending operation hammers are used if necessary to level down any
parts which 'may tend to rise. If in any case too sharp a bend is formed with
the centre pin, D, alone, a ring of a suitable size may be placed on the pin, or
a piece, U, such as is shown in figure, 3, may be used, this piece, U, consisting,
of a part of a ring with a tangential straight part intended to bear against the
bulb or edge of the beam, F.
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. Constructing machinery for bending iron or steel bars to form ship beams
and for other purposes substantially in the improved manner hereinbefore described
and, shown in the accompanying drawings.
2. The combination, for bending bars, of a sector plate turntable on a bed
plate, with flush surfaces on the sector plate and bed plate on which to fix a bar,
the parts being arranged and operating substantially as hereinbefore described.
Dated this Sixteenth day of October 1888.
EDMUND HUNT,
Applicant's Agent.