IMPROVEMENTS IN STEEL SHIP'S AND OTHER STEEL PLATES
Year: 1885

page_text: SAMUEL HANNAH 60, Queen Victoria St. London (Middlesex) (Engineer) do
hereby declare the nature of my invention for IMPROVEMENTS IN STEEL SHIP'S
AND OTHER STEEL PLATES to be as follows:-
In order to increase the strength-and facilitating the making-of steel ships and:
other constructions of steel I roll flanges on the plates (and also ribs) in order to be,
rivetted from the inside.

page_text: SAMUEL HANNAH 60, Queen Victoria St London Engineer, do hereby declare
the nature of my invention for IMPROVEMENTS IN STEEL SHIP'S AND OTHER
STEEL PLATES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
This invention has for its object improvements in steel plates such as are
commonly used in the manufacture of Ships Girders Bridges Tanks floors & other
constructions of Steel or Steel & Iron or other material.
In order to facilitate such construction, to strengthen and also to reduce the cost
in manufacturing it consists in rolling flanges-on the edges of the steel plates-so
used in order to strengthen them-and also ribs in the middle or body part of the
plate to further strengthen at that part. In the accompanying drawings similar
letters of reference indicate corresponding parts in both figures and also in the
same figure-Fig. 1. is a pair of ordinary rolls such as are commonly used in Iron
and steel works the top roll a, being limited in width to the intended width of the
steel plate a inside the flanges the under roll a³ has collars a³ the width between
corresponding to the width outside of the flauges of the steel plate the plate
when flat after being rolled between ordinary rolls is passed through between the
rolls a. a¹ and on screwing down the top roll the flanges are formed on each side.
For thicker plates or such as cannot well be made in the described manner I have
a pair of rolls Fig. 2. the top roll has a bevilled flange 65 on each side fitting into a
corresponding bevil b*.
On the ends of the lower roll 62 in the same manner as just described the plates
hot or cold are passed between the rolls-thus giving a direction and definite line
for the flange as shewn in the section b³. Should it be further desired to bend the
flanges so formed I use a pair of side rollers as shewn in Fig. 3. here c. again is
the top roller and c¹ the under the latter being limited in length by the intended
width between the flanges of the steel plate c² to he flanged. c³ are side rollers
carried in an independent frame in such manner that they may be travelled to or
from the edges of the plate c² to be flanged the plate after leaving the rolls Fig. 2
is passed between the rolls c. c¹ at the same time that the side rollers ca are forced
simultaneously against the edges thus bending the flanges to the desired form-as
shewn by c².
Another method I use for effecting the same object is shewn in end view in
Fig. 4. d is a strong base of cast iron or other material-the length or more of
the plate to be flanged d is a top clamping plate or girder which is also longer
than the plate to be flanged d² are rollers that are moveable not only in a
horizontal direction towards the plate but capable of twisting round so that their
line of trunnion may be vertical or at an angle-they are shewn in angular
position in the drawing the plate d³ after leaving the rolls as shewn in Fig. 2. is
firmly clamped or bolted between the base d, and the girder or clamping plate d',
the side rollers d being in the position shewn in Fig. 4. are now pressed against
the edges and carried in a suitable frame, the full length of plate d³ by this
process as the flanges become further bent the rollers are made to assume more and

page_text: more the vertical position-until the required angle is given to the flanges the
clamping apparatus is then slackened and the plate removed. Fig. 5. shews an
end view of another machine for effecting the same object in this case the clamping
apparatus is arranged so that the plate e will be vertical instead of horizontal as
shewn in Fig. 4. e. is a strong cast iron base or pillar or it may be owing to the
length of the plate to be flanged, that two are required these carry the clamping
plates ees as described in Fig. 4. e³ is a frame carrying a roller e* running in
gudgeons e and capable of sliding on the base plate at e¹ the full length or more of
the plate to be flanged-the roller and frame is also capable of a rising movement or
the clamping plates with the steel plate between is made to descend and so in
either case to cause the flange of the plate e' to bear against the roller the plate e
as it has left the rolls-in shape as shewn in Fig. 2. is then firmly clamped between
between the clamping plates e c8 the frame e is now made to travel the full
length of the plate-by a screw or otherwise and at the same time the roll e' is
caused to be elevated-and.so press against the plate until the required flange is
completed the plate is then removed and if necessary the other flange is com-
pleted, in the same manner-upon the top of this machine I mount a multiple
drilling machine-so that after rolling the flange or flanges they may be drilled
'ready for use in the construction.
Another machine the end view of which is shewn in Fig. 6. I use in order to
achieve both the preliminary process as shewn in Fig. 2. and also the complete
flanging as shewn in Figs. 3 & 5 and to do two plates at one and the saine time
f. is a base plate of cast iron or other material the full length or longer than the
plates to be flanged f¹ is a frame capable of sliding the full length off this carries
two side rollers fa the trunnions of which f10 & f11 are fitted into blocks f¹²,
these again sliding in four slotted recesses in the frame f* attached to these
blocks are right & left hand screws f* the middle ends of which enter the nuts.
fis f, f' are clamping plates full length or longer than the plates to be flanged-
and supported on the base f clear of the travel of the head f2 they are each pair
constructed in halves in order to facilitate the removal of the plates—after being
flanged these may be held together in position against the pressure of the
rollers by wedges eccentric rollers or other mechanical device-In using this
apparatus I firmly clamp the two plates flat as they leave the ordinary rolls-
between the clamping plates f f I take out the two rollers f³ and substitute two
of a similar shape to those shewn in Fig. 61 they being of such a diameter as to
clear the flanges and also the back of the slotted recesses when the roller trunnions
are fully drawn back-now by means of a screw a rack or other ordinary
mechanical method I cause the table f' to travel from end to end-and at the
same time cause the middle edge of the cone f¼ to force itself between the
plates f and so effect the purpose for which Fig. 2. rolls are intended I now
remove the coned rolls and insert the ordinary parallel rolls f³ and finish in the
same manner the flanges as required, by loosening the wedges or eccentric rollers
the plates may readily be removed-To save the time & trouble of removing the
parallel rollers f and substituting the cones as Fig. 6¹ two or more sets may be
mounted on the same head f2 in independent recesses and having independent
adjustments thus being able to effect the two operations of separating the plates
and forming the flanges at the same time.
6
A separate boss carrying a cutter or two round discs of steel-with a screw or
other adjustment-may also be carried on each side on the head f' in order to cut
and then plane the edges of the plates before commencing to bend the flanges-By
fixing the head f¹ and constructing the clamping plates f° f7 of half circles
revolving on a pin or rollers circular flanged plates may be made in the same
machine In place of the right and left hand screw adjustments ordinary screws
may be tapped through the cheeks f* and by forcing against the backs of the
blocks carrying the trunnions, these may be forced up to the work-by a
suitable means simultaneously or separately and independently. Fig. 7. is a pair
of rolls I use in order to form ribs on steel plates-to increase their strength-in one

page_text: direction g. is the usual top roll which may be plain for the making of single-
ribbed plates with ribs on one side only g¹ the lower roll is ribbed and on
passing the plate hot or cold, through between these, ribs-or corrugations-will be
formed the plates being afterwards flanged by the processes shewn in describing
the other machines. A finished single ribbed plate is shewn in Fig. 71 the ribs
may also be crossways instead of lengthways of the plate as shewn and the cor-
rugations have the recesses on the different sides of the plate opposite each other-
or a rib and a recess opposite, in the latter way the thickness of plate can be the
same throughout-but it will be thicker and thinner where the recesses or ribs
are opposite each other. Fig. 8. shews a side elevation and Fig. 8' a section of a
machine I use for flanging or shaping steel or iron articles it consists of a fixed
disc h having at one part a recess cut away. h¹ is a pin or gudgeon upon
which another disc h² revolves and is kept up to the other disc h by the rollers h³
or other suitable means the faces ³ on each inside of the two discs are so grooved
or formed that on the insertion of a rod of iron or steel and the disc he made to
revolve the rod is carried round and being shaped at the same time falls out at
the recess h⭑.
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 is
First. Steel plates flanged by rollers.
Second. Single and double ribbed flanged plates as shewn and described.
Third. The different machines and modes of producing the flanged plates as
shewn and described or any mere modification.