Sleepers and for other Purposes.
Year: 1884

page_text: Sleepers and for other Purposes.
I, ARTHUR COOPER of the Laurels Linthorpe Middlesbro in the County of Yorks,
Steel Works Manager do hereby declare the nature of my said invention for
"IMPROVEMENTS IN THE MANUFACTURE OF STEEL & IRON PLATES FOR SLEEPERS
AND FOR OTHER PURPOSES to be as follows:-
"
After some years experience in the use of Steel and Iron Railway Sleepers
pressed out of thin plates it has been found that the plates at the points where the
rails are secured by the fastenings are not sufficiently thick to resist the strains
transmitted to them, through the fastenings and that owing to this want of
thickness and strength the fastenings and sleepers cut into each other-the former
ultimately working loose and the latter weakened considerably by the holes
punched therein for receiving the fastenings, often breaking through the holes and
having to be replaced with new ones.
The object of the above Invention is to remedy the above defect by increasing
the thickness of the plate at the points where greater strength has been found to
be required (viz where the rails are secured) by forming bosses or thickening pieces
either on the top or bottom side or on both sides of the bar plate or strip, when
rolling it which I propose to do in the following manner. The strip bar or plate
instead of being rolled as at the present time of an equal thickness throughout is
formed in the rolls in the first instance with one or more ribs or thickening strips
of any required width in the line of the fastening holes and on either or both sides
of the plate, the ribs or thickening strips between the points in the plate where the
bosses or thickening pieces are required are then rolled down to the thickness of the
other parts of the strip, bar or plate by passing through the finishing grooves or
rolls in the periphery of which are formed cavities or recesses of the same width
and in positions corresponding with the ribs or thickening strips and of the length
the boas or the thickening pieces may be required to be made. The rolling down
of these ribs may either be done in the same rolls as those in which the strips, bars,
or plates are rolled but I prefer that it be done in a separate pair of chilled rolls by
preference placed at the end of the train. It is obvious that these rolls will have
to be made of such a diameter as will give on the periphery the required pitch or
centres for the cavities or recesses in which the bosses or thickening pieces are
formed and also that this invention is applicable to the manufacture of other
articles in which bosses or thickening pieces are required.
E

page_text: Sleepers and for other Purposes..
"
"
I ARTHUR COOPER of The Laurels, Linthorpe Middlesbro in the County of Yorks;
Steel Works Manager do hereby declare the nature of my said invention for-
IMPROVEMENTS IN THE MANUFACTURE OF STEEL AND IRON PLATES FOR SLEEPERS
AND. FOR OTHER. PURPOSES and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
C
"
After some years experience in the use of Steel and Iron Railway Sleepers,
pressed out of thin plates, it has been found that the plates at the points where the
rails are secured by the fastenings; are not sufficiently thick to resist the strains
transmitted to them through the fastenings and that owing to this, want. of
thickness and strength, the fastenings and sleepers cut into each other--the former
ultimately working loose, and the latter weakened considerably by the holes
punched therein for receiving the fastenings often breaking, through the holes,
and having to be replaced with new ones. The object. of the present Invention is
to remedy the above defect by increasing the thickness of the plate at the points
where greater strength has been found to be required (viz where the rails are
secured) by forming bosses or thickening pieces either on the top or bottom side,
or on both sides of the bar, plate or strip, when rolling it which I propose to do in
the following manner. The strip bar. or plate instead of being rolled as at the
present time of an equal thickness throughout, is formed in the rolls in the first
instance with one or more ribs or thickening strips of any required width.in.the
line of the fastening holes and on either or both sides of the plate, the ribs or
thickening strips between the points in the plate where the bosses or..thickening
pieces are required are then rolled down to the thickness of the other parts of the
strip, bar or plate, by passing through the finishing grooves or rolls in the periphery
of which, or in what may be called bossing rolls are formed cavities or recesses of
the same width and in positions corresponding with the ribs or thickening strips
and of the length. the boss or the thickening pieces may be required to be made.
The rolling down of these ribs may either be done in the same rolls as those in
which the strips, bars or plates are rolled.but I prefer that it be done in a separate
pair of chilled bossing rolls by preference placed at the end of the train. It is
obvious that these rolls will have to be made of such a diameter as will give on the
periphery, the required pitch or centres for the cavities or recesses in which bosses
or thickening pieces are formed.
., To clearly explain the invention reference is made to the accompanying drawing
which forms part of this specification, and in which
I
Fig. 1 represents in elevation a rolling mill with bossing rollers at the end of
the train.
1.3. 1)
Fig. 2. represents the bossing rolls in side sectional elevation.
Fig. 3. represents a plan of Fig. 1.
Figs. 4. 5 and 6 represent in elevation cross section and plan, the strip bar,
plate with the thickening piece the entire length,
or

page_text: Figs. 7. 8 and 9 represent in elevation cross section and plan, the bar strip or
plate after it has passed through the bossing rolls.
Fig. 10 represents in elevation a rolling mill in which the bossing rolls are part
of the same train as tho thickening rolls.
Fig. 11 represents in side sectional elevation the bossing rolls; and
Fig. 12 represents a plan of Fig. 10.
In all the figures like letters of reference refer to corresponding parts. a. a¹;
b. b; c. c d d¹ represent the ordinary roughing rolls; e. e¹; f. f¹; g. g¹;
represent the finishing rolls, by the recesses n in which the bar, strip or plate is
thickened; while the rolls h. h¹ are bossing rolls, the lower ¹ of which is shown in
Figs. 1 and 3 as being driven from the rolls et fi g¹ by a spindle & box in the
usual way; the top one receiving its motion from the bottom roll h¹ by means of
pinions i. i or it may be, driven by simple contact; the rolls h h¹ by preference are
made of such a diameter that their circumferences are equal to the length of one
sleeper plate but this is not absolutely necessary they must however be made of
such a diameter as will give on the periphery the required pitch or centres for the
pockets or cavities jj which.form the bosses or thickening pieces, and this is equally
the case when using the arrangement represented in Figs. 10. 11 and 12. The
complete process is as follows; a slab or bloom is first passed through the roughing
rolls a a¹; bb¹; c c¹; d. d'; then through the finishing rolls ee¹ f. f¹ &c, after
which the bar is as represented in Figs. 4. 5 and 6; it is then passed through the
bossing rolls h h', after which it is as represented in Figs. 7. 8. and 9.
It will be apparent to those skilled in the working of rolling mills that the
bossing rolls h h must not be turned down after the exact necessary size has been
determined, as by so doing, the centres of the pockets jj will be reduced; and to
overcoine the loss sustained by throwing aside the rolls when worn, the said rolls
may be made with removable centres so that nothing but the hoop or ring which
forms the working part need be replaced. It will also be apparent that bosses may
be made of any size or shape and on either or both sides of the plate I would
have it understood that I do not claim the manufacture of plates generally with
thickened edges or bosses upon them, as I am aware that there is nothing novel in
this but
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
The hereinbefore described improvements in the manufacture of bars, strips or
plates of iron or steel (for Railway sleepers) with thickening pieces or bosses at the
points where the rails are to be subsequently secured substantially as specified.
PHILIP M JUSTICE,
Applicant's Agent.