Improvements in Machinery for Bending and for Straightening or . Flattening Iron or Steel Plates or Bars.
Year: 1896

page_text: Date of Application, 24th June, 1890
Tomalade Inanification Loft 22 Mar 1907 Accented
24th An
1907
Date of Application, 24th June, 1890
Complete Specification Left, 23rd Mar, 1907 Accepted, 24th App 1007
Apr,
PROVI ONAL SP
Improvements in Machinery for Bending and for Straightening or
. Flattening Iron or Steel Plates or Bars.
I, ANDREW CRAWFORD PATRICK, of William Street Works, Johnstone, in
the County of Renfrew, North Britain, Engineer, do hereby declare the nature of
this invention to be as follows, that is to say :-
My said invention relates to machinery of the kind described in my and
William Hunter's Patent Specification No.. 8347 of 1887. In a machine of the
kind referred to there are three upper rollers and two lower rollers, and adjusting
and driving mechanism; and my present invention consists in adding two lower
rollers so as to make a horizontal series of four lower rollers, the three upper
rollers being above the spaces between the lower rollers. The added rollers may
be driven or undriven, their principal use being to give better support to plates or
bars when entering and leaving the machine, especially when the plates or bars
are of large size. The added rollers also prevent the plates or bars from
bending downwards in consequence of the nip between an outer upper roller
and one of the inner lower rollers being a little to the inner side of the upper
roller.
Dated this Twenty-third day of June 1896.
EDMUND HUNT,
Applicant's Agent.
Improvements in Machinery for Bending and for Straightening or
Flattening Iron or Steel. Plates or. Bars.
I, ANDREW CRAWFORD PATRICK, of William Street Works, Jobnstone, in
the County of Renfrew, North Britain, Engineer, do hereby declare the nature
of this invention and in what manuer 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 relates to machinery of the kind described in my and
William Hunter's Patent Specification No. 8347 of 1887. In a machine of the
kind referred to there are three upper rollers and two lower rollers, and adjusting
and driving mechanism; and my present invention consists in adding two lower
rollers so as to make a horizontal series of four lower rollers, the three upper
rollers being above the spaces between the lower rollers.
And in order that my said invention and the manner of carrying out the same may
be properly understood I hereunto append two sheets of explanatory drawings
showing two modifications of my improvements.
Figure, 1, on Sheet, 1, of the accompanying drawings is a front elevation, and

page_text: Figure, 2, on Sheet, 2, is. au end elevation showing one modification of my improved
machinery.
Figure, 3, is an end elevation showing part of the machinery sufficient to illustrate
a second modification.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
As shown in Figures, 1, and 2, of the drawings, there are three upper
rollers, A, B1, B2, and two lower rollers, C1, C2, and adjusting and driving
mechanism all as described in the Patent Specification herein before referred to,
and my present invention consists in adding two lower rollers, C3, C4, so as to
make a horizontal series of four lower rollers, the three upper rollers, A, B.1, B2,
being above the spaces between the lower rollers, C1, C2, C3, C4. The added
rollers, C3, C4, are of the same diameter as the two inner lower rollers, C1, C2,
and are placed in the housings, D, but they are undriven (or they may be driven)
their principal use being to give better support to the plate or bar, E, when
entering and leaving the machine, especially when the plate or bar is of large size.
The added rollers, C3, C4, also prevent the plate or bar, E, from bending
downwards in consequence of the nip between an outer upper roller, B 1, or B 2,
and one of the inner lower rollers, C1, or C 2, being a little to the inner side of
the upper roller.
'In the modification shown in Figure, 3, only one, B 1, of the outer upper rollers
is shown in conjunction with one, C 3, of the two added lower rollers. In this
modification the two added lower rollers, C 3, (C 4) are of smaller diameter than
the other two lower rollers (C 1, C 2) and they are carried at the upper ends of
pairs of levers, W, centered on spindles, X, carried in the housings (D) the levers
having counterweights, Y, at their lower ends. These two added lower
rollers, C 3, (C4) assist the entering of the plate, E, into the machine and also
prevent its falling away when it is freed from contact with the outside top
roller, B 1, (or B 2) and bottom roller, (C 1, or C 2) when being passed backwards
and forwards for the purpose of straightening.
If it is desired, to bend the plate, E, downwards, when running it out at either
side, the pressure of the plate forces the carrying roller, C3, (or C 4) down and
the balance weight, Y, brings it again into position.
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 :-
.In,machinery for bending and for straightening, or flattening iron or steel plates
or bars the combination with machinery such as is described in Patent
Specification No. 8347 of 1887 of two additional lower rollers arranged
substantially as and for the purposes herein before described.
Dated this Twenty-second day of March 1897.
EDMUND HUNT,
Applicant's Agent.