Improvements in Plate Bending Machines.
Year: 1892

page_text: Date of Application, 22nd Sept., 1892
Complete Specification Left, 21st June, 1893—Accepted, 22nd July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Plate Bending Machines.
I, WILLIAM BRUCE THOMPSON, of Ellangowan, Dundee, in the County of
Forfar, N.B. Engineer, do hereby declare the nature of this invention to be as
follows:-
--
This invention has for its object to bend plates of great length or breadth, such
as for instance the bilge plates of ships, by means of rollers shorter than the
breadth of such plates. At present the breadth of plate which can be bent by a
bending machine is determined by the distance between the side frames or gables
which carry the roller bearings.
In carrying out my invention, I concentrate all the driving gear at the one side,
keeping the general design of the gable there, very much as in existing machines.
The gable at the other side is of different and novel construction, consisting of a
base carrying the bearings of the lower rollers, the bearing of the upper and
adjustable roller being carried by a cross beam supported by strong columns or
brackets from the before mentioned base; the clear distance between such columns
being rather more than twice the breadth of plate to be bent. In this manner by
having free access to one end of the machine-in addition to the front and back-
that is to say, constructing the machine so that the rolled plate can be drawn from
between the rolls in a direction parallel to their axes, instead of at right angles as
at present, say half a plate can be bent, then withdrawn, turned end for end and
the operation completed. In some cases it may be desirable to bend plates of great
length without withdrawing and turning them end for end, in which case the driving
gear of the machine will have to be somewhat modified.
For example, the roller bearings will be carried by open ended gables, similar to
the one hereinbefore described, and the driving gear placed sufficiently far away
from such gables, the motion being communicated to the rolls by shafts.
Dated this 19th day of September 1892.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Plate Bending Machines.
I. WILLIAM BRUCE THOMPSON, of Ellangowan, Dundee, in the County of
Forfar, N.B. Engineer, 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 statenient :-
This invention has for its object to bend plates of great length or breadth, such
as for instance the bilge plates of ships, by means of rollers shorter than the
breadth of such plates. At present the breadth of plate which can be bent by a
bending machine is determined by the distance between the side frames or gables
which carry the roller bearings
:-
The description of my improvements is assisted by two sheets of explanatory
drawings hereunto appended and hereinafter referred to.
Figure 1. (Sheet 1.) of the drawings is a front elevation, and Figure 2. (Sheet 2.)
a side elevation of the machine.
In these drawings the same reference letters and numerals are used to mark the
same or like parts, wherever they are repeated.

page_text: In carrying out my invention, I concentrate all the driving gear at the one sid A,
keeping in some cases, the general design of the gable there very much as in
existing machines, although in the example described and illustrated, the two gables
are similar.
The gable at the other side B. is of different and novel construction
from that ordinarily used, consisting of a base 3. carrying the bearings 4. of the
lower rollers 5, the bearings 6. of the upper and adjustable roller 7. being carried
by a cross beam 8. supported by strong columns or brackets 9. from the before
mentioned base 3 ; the clear distance between such columns 9. being rather more
than twice the breadth of plate 10. to be bent. In this manner, by having free
access to one or both ends of the machine-in addition to the front and the back-
that is to say, constructing the machine so that the rolled plate 10. can be drawn
from between the rolls in a direction parallel to their axes, instead of at right angles
as at present, say half a plate can he bent, then withdrawn, turned end for end and
the operation completed. In some cases it may be desirable to bend plates of great
length without withdrawing and turning them end for end, in which case the driving
gear of the machine will be modified as illustrated by the annexed drawings.
For example, the roller bearings will be carried by open ended gables, similar to
the one hereinbefore described, and the driving gear placed sufficiently far away
from such gables, the motion being communicated to the rolls by shafts.
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) In plate bending machines of the kinds hereinbefore indicated, making one or
both gables open ended in order that the plates to be operated upon, may be inserted
and withdrawn in a direction parallel to the axes of the rollers, substantially as
described and illustrated by the appended sheets of drawings.
Dated this 19th day of June 1893.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.