Flattening Iron or Steel Plates or Bars.
Year: 1887

page_text: Date of Application, 10th June, 1887
Complete Left, 8th Mar., 1888
Complete Accepted, 27th Apr., 1888
Flattening Iron or Steel Plates or Bars.
We, ANDREW CRAWFORD PATRICK, Engineer, and WILLIAM HUNTER, Foreman
Engineer, both of William Street Works, Johnstone, in the County of Renfrew,
North Britain, do hereby declare the nature of this Invention to be as follows, that is
to say:
Our said Invention has for its object, by an improved construction to provide a
machine which with an increased strength of parts subjected to severe strain, will serve
both for bonding and for straightening or flattening iron or steel plates or bars, and
will be of comparatively moderate cost.
In carrying out our Invention we place five horizontal rollers in a pair of strong
housings with two of the rollers below and three above. The two lower rollers are
used along with the upper middle roller for bending, the ends of the plate or bar
being turned upwards in the bending operation instead of downwards as in some
machines. With this arrangement the upper middle roller can be made of a sufficient
size and strength to resist the strain between it and the two lower rollers. The upper
rollers are held in bearing blocks which can be raised or lowered by screw spindles
which are all geared together, so that all three upper rollers can be raised together.
At the same time the two outer upper rollers can be raised or lowered independently
of the middle roller and of each other, the nuts or internaliy screwed blocks in which
the bearing spindles work being formed with wormwheels which have in gear with
them worms on shafts having hand wheels on them.
When bending the two outer upper rollers are raised out of the way; and for
straightening or flattening the whole of the upper rollers are suitably adjusted. The
driving power is applied to the lower rollers by means of spurwheels that of one roller
being at the opposite end to that at which the other is, and the two being in gear with
pinions on a first-motion shaft.
Dated thin Ninth day of Inna 1887
EDMUND HUNT,
Applicants' Agent

page_text: Flattening Iron or Steel Plates or Bars.
We, ANDREW CRAWFORD PATRICK, Engineer, and WILLIAM HUNTER, Foreman
Engineer, both of William Street Works, Johnstone, in the County of Renfrew,
North Britain, 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 :-
Our said Invention has for its object by an improved construction, to provide a
machine which with an increased strength of parts subjected to severe strain, will
serve both for bending and for straightening or flattening iron or steel plates or bars,
and will be of comparatively moderate cost.
In carrying out our Invention according to one modification which is shown on two
accompanying sheets of explanatory drawings comprising figures, 1, and 2, which are
front and end elevations, we place five horizontal rollers, A, B1, B2, C1, C2, in a
pair of strong housings, D, with two of the rollers, C1, C2, below and three, A, B1, B2,
above. The two lower rollers, C1, C2, are used along with the upper middle roller, A,
for bending, the ends of the plate or bar, E, being turned upwards in the bending
operation instead of downwards as in other combined bending and flattening machines.
With this arrangement the upper middle roller, A, can be made of sufficient size and
strength to resist the severe strain between it and the two lower rollers, C1, C2, when
flattening heavy plates for ships, boilers, girders, and the like. One of the other
upper rollers, B 1, or B 2, may also be used to assist in the bending operation, or to
correct the action of the middle upper and two lower rollers, A, C1, C2, when a plate
or bar is over-bended by them.
The upper rollers, A, B1, B2, are held in bearing blocks, H1, H2, H3, which can
be raised and lowered by means of screw spindles, J 1, J 2, J3, which are geared
together by spurwheels, K1, K2, K3, so that all three upper rollers can be raised
together. The middle spurwheels, K 1, at each end of the machine have fixed to
them worm wheels, L, which have in gear with them worms on a shaft, M, having on
it a large hand wheel, N.
Whilst the outer rollers, B1, B2, can be raised along with the middle roller, A,
they can also be raised or lowered independently of the middle roller and of each
other. For this purpose the screw spindles, J2, J3, work in nuts or internally
screwed blocks which are not fixed but can turn in sockets or bearings in the housings,
and which have fixed on them wormwheels, P2, P3. With these wormwheels, P2, P3,
there are in gear worms, Q2, Q3, on shafts, R, which have handwheels, S, fixed on
their ends.
When bending a plate or bar, the two outer upper rollers, B1, B2, are raised
so as not to interfere; and for straightening or flattening the whole of the upper
rollers, A, B1, B2, are suitably adjusted. The driving power is applied to the lower

page_text: rollers, C1, C2, as in existing large plate bending machines, by means of spur-
wheels, T1, T2, that of one roller being at the opposite end to that at which the other
is, and the two being in gear with pinions U1, U2, on a second-motion shaft, V.
When the machine is required for bending only, one of the upper rollers, B1, B2,
may be dispensed with the machine then forining an improved bending machine."
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:―
1-The improved arrangement or combination of parts of machinery for bending
and for straightening or flattening iron or steel plates or bars substantially as herein-
before described.
2-The improved arrangement or combination of parts of machinery for bending
iron or steel plates or bars substantially as herein before described.
EDMUND HUNT,
Applicants' Agent.