Year: 1886

page_text: I, EDWIN D. WASSELL, of Pittsburgh in the County of Allegheny and State of
Pennsylvania, United States of America, Roller do hereby declare the nature of
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :--
My invention relates to rolling mills, and has for its object the formation of
wide flat bars from worn out rails, in contradistinction to the usual form of bar
constructed therefrom.
By the ordinary means heretofore employed for the reducing of worn out rails to
bars the usual width is about four inches and the thickness about five eighths of
an inch corresponding the ordinary muck-bar in the process of rolling.
It is a well known fact that the length of the sheet of iron or steel in the
rolling process is dependent upon the width of the bar from which the sheet is
rolled, and in the present condition of manufacture it is desirable to produce sheet
metal from bars of iron or steel of a given width and thickness in the most
expeditious manner possible and with the least number of heats, that is to say.
In the re-working of iron or steel as of old rails it is desirable to approach as near
as possible the sheet form at a single heat, so that in bringing it into a sheet of
any desired thickness, width and length only two heats are required for this
purpose, when such reduction is accomplished by the means hereinafter described.
To enable others skilled in the art with which my invention is most nearly
connected to make and use it I will proceed to describe its construction and
operation.
In the accompanying drawings which form part of my specification
Figure 1 represents a front elevation of a pair of rolls provided with grooves
the contour of which is clearly shewn.
Figures 2, 3, 4, 5 and 6 represent transverse sections of the rail after passing
through the grooves. The worn out rail is heated in a suitable furnace to the
forging heat it is then passed through the grooves of the rolls shown in Figure 1,
in consecutive passes A, B, C, D, E. When the rail has been passed through the
groove A it will be of the form shewn in Figure 2; when passed through the
groove B it will be of the form shewn in Figure 3; when passed through the
groove C it will be of the form shewn in Figure 4; when passed through
the groove D it will be of the form shewn in Figure 5, and when passed through
the groove E it will be a flat bar or sheet.

page_text: The part a in Figures 2, 3, 4, 5 represents the portion constituting the original
head or tread of the rail. b the web and c the base of the rail.
The distinctive feature of my improvements consists in the peculiar form given
to the rail after passing through the different grooves in the rolls and in the means
employed for imparting width to the bar through the medium of the projections F
and G on one of the rolls and corresponding grooves H, I in the other roll, the
increased width of the bar being proportioned to the size of said projections and
grooves.
It will readily be observed that after the longitudinal indentations indicated
at d, e in Figures 4, 5 which are formed by the rail passing through the grooves C, D
in the final pass through the groove E for reducing the rail to a flat bar, its width
will be greatly increased which increased width is due to the longitudinal
grooves de formed by the projections F, G and corresponding grooves H, I, and
that the desired increase of width of the bar will be dependent upon the depth
and width of the grooves d, e.and the size of said projections and corresponding
grooves in the rolls.
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. In a mill for the reduction of old and worn out rails to flat bars, rolls
having grooves A, B, C, D and E of the contour shewn, the projections F and G
and corresponding supplementary grooves H, I substantially as herein described.
Second. In a mill for reducing old iron or steel rails, the curving or shaping of
the head of the rail and the bending over of one part of the flange of the rail while
the other part of the flange is being reduced substantially as herein described and
shewn.
Dated this Ofth dew of Jannawr 1006
HASELTINE, LAKE & Co.,
For the Applicant.
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