Improved Apparatus for Manipulating Heavy Masses of Metal during the Process of Rolling
Year: 1899

page_text: Date of Application, 31st Oct., 1899
Complete Specification Left, 31st July, 1900-Accepted, 8th Sept., 1900
PROVISIONAL SPECIFICATION.
Improved Apparatus for Manipulating Heavy Masses of Metal
during the Process of Rolling,
I, CHARLES DAVY, of 6, Severn Road, Sheffield, Engineer, do hereby declare
the nature of this invention to be as follows:-
My invention has for its object to facilitate the manipulation of ingots or
large masses of metal such as amour plates in the process of rolling, and it
consists in the employment in lieu of the live rollers with which rolling mills
are at present usually furnished, and by means of which the plates or other
masses are fed to either side of the rolls, of hydraulic apparatus adapted both to feed
the mass of metal to the rolls, and to turn it in the horizontal plane, the moving
parts of said apparatus being less directly exposed to the weight and heat of the
mass to be dealt with, so that the apparatus 18 less liable to wear and tear, and
consequently less costly to maintain, than that now generally employed.
My improved apparatus consists essentially of hydraulic lifting rams working
vertically through longitudinal slots formed in the floor of the mill at either
or both sides of the rolls, the cylinders in which the iams at either side work
being mounted in slides capable of being traversed in the longitudinal slots,
the slides being for this purpose coupled to a hydraulic 1am 01 iams working
horizontally beneath the floor. The lifting iams of which there are two on
either or both sides of the rolls, are arranged on each side of the longitudinal
centre line of the mill floor, and are capable of being raised and lowered.
Independently of one another.
The mode of using the apparatus is as follows. In order to feed the plate
or other mass to the rolls, the lifting iams are brought, by the action of the
horizontal 1am, beneath the plate, and having been first raised slightly above the
level of the floor so as to correspondingly lift the end of the plate, are caused to
travel towards the rolls, thus hauling or pushing the plate along the floor and
entering it between the rolls.
When the plate or other mass, having been deposited on the floor towards
either side of the rolls, 18 to be turned partially or wholly round in the horizontal
plane, the lifting 1am at one side only of the longitudinal centre line, is raised,
and is then traversed in its slot towards or away from the rolls, thus causing
one edge of the plate to be slewed round a certain distance upon the opposite
edge of the plate as a pivot. The operation may be repeated by a reverse move-
ment of the other lifting ram, and so on alternately according to the extent
to which it may be desired to rotate the plate.
In order to facilitate the slewing operation a lifting ram, working on a fixed
cylinder, may be arranged on the longitudinal centre line of the floor, this
1am when raised acting as a cential pivot upon which the plate would be turned
about its own centre by the longitudinal movement of the other lifting rams
in either direction.
The floor may have transverse grooves formed in its upper surface to accomo-

page_text: date the chains for turning the plate or other mass over in a vertical plane, as
described in a previous application for Letters Patent dated 19th October 1899,
No. 20,923, the apparatus described in the present application forming in such
case a convenient means of placing the plate or other mass in position to be
acted upon by the chains.
Each slide, instead of carrying a single lifting ram, may support two such
rams, so that the plate or other mass when being fed to the rolls could be lifted
bodily by four rams acting equally.
Improved Apparatus for Manipulating Heavy Masses of Metal
during the Process of Rolling.
I, CHARLES DAVY, formerly of 6, Severn Road, Sheffield, and at present of
10, Belvedere Road, Scarborough, Engineer, do hereby declare the nature of this
invention and in what mannei the same is to be performed to be particularly
described and ascertained in and by the following statement.-
-
My invention has for its object to facilitate the manipulation of ingots or
large masses of metal such as armour plates at the rolling mill, and it consists
in the employment in heu of the usual "live rollei" gear at the back and front
of the rolls, whch is expensive to construct and maintain, of hydraulic apparatus
adapted not only to feed the ingot or plate to the rolls and to receive it there-
fiom if desired, but also to slew or tuin it in the horizontal plane, the said
apparatus being both more efficient in operation and less costly to maintain,
than that now generally employed
My improved apparatus consists essentially of vertical lifting, carrying and
slewing iams working through the floor of the mill at either or both sides of the
rolls, the ram cylinders or certain of them being mounted in slide blocks capable
of being traversed towards or from the rolls in guides beneath the mill floor,
by means of a horizontal ram 01 1ams. There may be two lifting carrying and
slewing rams at either side of the 1olls, arranged one at each side of the longi-
tudinal centre line of the mill floor, these iams being capable of working
independently.
In order to facilitate the slewing operation a pivotal am working in a fixed
cylinder may be arranged between the lifting, carrying and slewing rams, this
1am when raised acting as a central pivot upon which the plate would be tuined,
by the horizontal movements of the other iams in opposite directions
The floor may have transverse grooves formed in it to accommodate sling
chains for turning the plate over, as described in a previous application for
Letters Patent dated 19th October 1899, No 20,923
Reference is to be had to the accompanying diawings forming part of this
specification wherein Figure 1 is a side elation partly in longitudinal section
through the tiaveising cylinder and through one of the lifting, canying and
slewing cylinders at one side of the rolls Figure 2 is a plan of the same and
Figure 3 is a cross section through the lifting, carying and slewing cylinders
illustrating the slewing operation without the use of a pivotal ram.
A are the mill rolls, B the mill floor, C the plate to be rolled DD a pair of
lifting, carrying and slewing iams working in cylinders E caused by slide

page_text: blocks E working in longitudinal guides F beneath the mill floor through
slots Gin which the 1ams D 1180 The slide blocks Ease coupled by 1ods and a
yoke with the 1am of a stationary horizontal cylinder H beneath the mill floor
so as to be thereby traversed together towards and from the rolls The hydraulic
connections to the movable cylinders are through "walking" flexible or other
suitable pipes in the usual manner and are provided with means whereby the
supply of power to the two cylinders E may be controlled independently of each
other and of the stationary cylinder H Each slide block might however sup-
port two lifting rams working in unison so that the plate could be slewed by
the two rams at one side acting at a time or could be fifted or supported bodily
by the four rams acting simultaneously for the purpose of being fed to or
received from the rolls.
There would either be similar hydraulic apparatus at the other side of the
rolls or in addition to the pair (or pairs) of lifting, carrying and slewing iams Di
there may be a vertical pivotal ram I whose cylinder is stationary and situated
centially between the guides of the 1ams D₁ to which in this case travelsing
motion would be imparted either by a single iam common to both as before
or by independent rams H¹ H' so as to admut of simultaneous traversing motion
of the 1ams D' in opposite duections.
If sling chains for turning over the plate are provided they would usually be
situated at the one side of the rolls, and the pivotal ram I would be situated
at the opposite side of the rolls so that the slewing motion would not be
obstructed by the chains. Said sling chains when not in use ale received in
grooves in the mill floor so as not to obstruct the passage of the plate towards
or from the rolls.
The operation of feeding the plate to the rolls by means of the pan of ramis I)
is illustrated in Figure 1, the slewing operation by means of the same two iams
being illustrated in Figure 3.
In order to feed the plate to the rolls the amis D are brought by the action
of the traveising ram H to proper position beneath the plate and are then
1aised so as to lift the edge of the plate to be entered between the rolls, the
plate being then caned forward by the traveising motion of the slides E¹
and rams D, until the plate is seized by the rolls The slewing of the plate
by means of the rams D 18 effected by raising the one iam only at a time so
that the plate rests upon it at one side and upon the mill floor at its opposite
side and then imparting a traversing motion to the ams D so that the plate
will be turned upon its point of support on the mill floor as a pivot. The slew-
ing may be continued by then raising the other 1am D and traversing it in
the opposite duection and so on until the plate has been turned through any
desired angle say a quarter round so that what was previously the side edge of
the plate will now be presented to the rolls
When a pivotal rami I 18 used on which to turn the plate as a centre, the plate
would be bought centrally (or approximately 80) over the said am I which
would then be raised until it supports the weight of the plate which would then
be turned on the ram I as a centie by raising the rams Di sufficiently to bring
them into fictional contact with the plate and moving them in opposite direc-
tions alternately or simultaneously according as they are traversed by the same
1am or by independent iams H¹.
Having now particularly descubed and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:
1
1 Hydraulic apparatus for manipulating ingots or plates at the rolling mill,
consisting of a pair or pairs of vertical lifting, carrying and slewing rams
adapted to use through and to be traversed along longitudinal slots in the mill
floor, the rams towards opposite sides of the plate being independently workable
as regards their lifting motion, substantially as specified.

page_text: 2 Hydraulic apparatus for manipulating ingots or plates at the rolling mill,
consisting of a pan or pairs of vertical lifting, carrying and slewing iams
adapted to rise though and to be traversed along longitudinal slots in com-
bination with a horizontally working ram oi iams for imparting the traveising
motion simultaneously or independently to the lifting, canying and slewing
iams, substantially as described
Hydraulio apparatus for manipulating ingots or plates at the rolling mill,
consisting of a pan o pans of vertical lifting, cailing and slewing rams
adapted to rise through and to be traversed along longitudinal slots in com-
bination with a stationary central iam to serve as a pivot for the plate in slewing,
the lateral and cential iams being independently workable substantially as
described.
Daten
BILL
Ist day o
006T
AM & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London,