Improvements in and relating to the "Scarfing" or Treating of Metal Blanks or Strip Bands used in the Manufacture of Tubes and like Hollow Articles.
Year: 1892

page_text: Date of Application, 8th Oct., 1892
Complete Specification Left, 5th July, 1893-Accepted, 5th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to the "Scarfing" or Treating of Metal
Blanks or Strip Bands used in the Manufacture of Tubes and like
Hollow Articles.
I, ROBERT HUTTON, of Weir Street, Coatbridge, Lanarkshire, Engineer, do
hereby declare the nature of my invention to be as follows:-
"
-
This invention has for its object to produce metal blanks or strip bands with
their edges "scarfed or reduced on the same, or on opposite diagonal sides in the
rolling mills maintaining the blanks or strips intact without any waste of metal,
and thus be a great improvement over the method heretofore in use of cutting and
"scarfing" the blanks after coming from the rolling mills, in special planing or
edge surfacing machines employing labour and wasting the metal removed.
"
or
Heretofore the metal ingots were reduced in passing through between a series of
pairs of rollers in the rolling mills and then taken as blanks to be "scarfed
reduced on one of the diagonal edges on opposite surfaces, or both edges on the
same surface by special planing or edge surface "scarf" cutting machines, before
being re-heated and welded into tubes or like hollow articles. By my improve-
" rollers
ments I first run the metal ingots through plain, edge, and "diamond
in the rolling mills, in a similar manner to that heretofore in use; but I then
run the partially reduced metal blanks or strips through between a series of pairs
of rollers, each having one of their diagonal opposite inner end or edge cylindrical
surfaces or both edges on one roller of a taper or "fillet" shape, which "scarfs "
or reduces the welding edges of the blanks in the process or at the same time
as reducing the whole surface and body of the blank or strip itself.
In carrying my improvements into practice under one arrangement for rolling
the metal blanks or strips with reduced diagonal opposite edges, I first pass the
ingot through between broad plain flat surface rollers, with side guide flanges,
then between edge flat surface rollers, and afterwards between a series of pairs
of V grooved or "diamond" rollers, these rollers being mounted on spindles
between end supporting housings. Preferably there would be three horizontal
spindles used, placed over each other, and with the rollers mounted on each.
One end of each of these spindles would be connected through portable spindles
and ring couplings to the spindles of helical wheels mounted between end housings,
the spindle of the central wheel being connected by a coupling to the shaft of
a flywheel, which may be driven direct by an engine, or by belt or other
gearing, so as to rotate all the spindles and rollers in unison, the mechanism
being all so far much of a usual construction. The other ends of the spindles
of the shaping and reducing rolls I connect by corresponding portable spindles
and ring couplings to other three spindles placed horizontally in line with them;
and mounted between end carrying housings. On the lower and central spindles
I first, preferably, mount ordinary V grooved "diamond" rollers and pass
the metal blanks through between them, and a corresponding shaped roller may
be mounted on the upper spindle over these for use when operating on or pro-
ducing other work. I then mount in line a plain flat roller with side guide
flanges on the upper spindle and on the central spindle a grooved or "half diamond
roller. On the one circumferential edge, say the left, of the upper roller I form a
raised taper or "fillet," close up to the flange, and I form a corresponding taper
or "fillet" on the right hand end or edge circumference and close to the flange
of the lower roller, and the metal blank or strip is passed between these rollers
to commence rolling or forming the taper or scarf" according to my improve-
ments on its opposite diagonal edges. An ordinary "diamond" roller may be
I then
mounted on the lower spindle in line with the upper pair for other use.
"
or
"

page_text: pass the metal blank or strip through between a pair of plain flat rollers with
their edges tapered or "filleted" as described for the former set, the one roller
being mounted on the lower spindle and the other on the central spindle, while
a plain flat roller may be mounted on the upper spindle in line with these. I then
pass the metal blank or strip through a pair of plain surfaced rollers with tapered
or "filleted" edges the one roller being mounted on the upper spindle and the other
on the central spindle, and a plain surface roller may be mounted in line with these
on the lower spindle. A set of V grooved or "diamond" rollers may be mounted on
the three spindles close to the aforesaid rollers for ordinary work. The metal
blanks or bands with their tapered or "scarfed" opposite diagonal edges so far
rolled and reduced are then passed over guides and between a pair of hard chilled
iron finishing rollers mounted on spindles between end housings in line with the
lower and central spindles of the former rollers. These finishing rollers would be
plain surface rollers and have the tapers or fillets formed on them, to give the
finishing, reducing, and tapering or scarfing effect to the blanks rolled between
them; and they would or may be of considerable length and have a number of
tapers or fillets formed on them at distances apart for passing the blanks or bands
through between them to suit different sizes. The blanks or bands are now reduced
and tapered or "scarfed " ready for being divided into suitable lengths and curved
up and reheated for being welded into tubes or like hollow articles, otherwise in a
usual manner. For "scarfing or reducing the two parallel edges on the same side
or surface of the blank two tapered fillets would be formed on one of the rollers
preferably the upper one of each set.
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Tapered bars would be inserted through slots formed in the housing frames
carrying the rollers, these bars being formed with screws and hed with nuts at
their one end for adjusting the spindles and rollers to or from each other by
drawing the tapered bars out or pushing them in respectively, to give the proper
reducing effect and thickness of metal. The upper ends of the housing frames
would be fitted with the usual blocks and hand operated screws for regulating or
adjusting the pressure on the rollers. The usual guides would also be fitted for
guiding in the ingots and blanks to the rollers, and where the reducing and tapering
rollers are used, portable guards or guides attached to weighted levers would be
fitted to prevent the blanks while being delivered running round the rollers.
Dated the 7th October 1892.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to the "Scarfing" or Treating of
Metal Blanks or Strip Bands used in the Manufacture of Tubes
and like Hollow Articles.
I, ROBERT HUTTON of Weir Street, Coatbridge, Lanarkshire Engineer, do
hereby declare the nature of my invention, and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement, in writing that is to say :-
وو
This invention has for its object to produce metal blanks or strip bands with their
edges "scarfed or reduced on the same, or on opposite diagonal sides in the rolling
mills maintaining the blanks or strips intact without any waste of metal, and thus
be a great improvement over the method heretofore in use of cutting and "scarfing
the blanks after coming from the rolling mills, in special planing or edge surfacing
machines employing labour and wasting the metal removed.
"
"
or
Heretofore the metal ingots were reduced in passing through between a series of
pairs of rollers in the rolling mills and then taken as blanks to be "scarfed
reduced on one of the diagonal edges on opposite surfaces, or both edges on the
same surface by special planing or edge surface "scarf" cutting machines, before

page_text: being reheated and welded into tubes or like hollow articles. By my improvements
I first run the metal ingots through plain, edge, and "diamond rollers in the
rolling mills, in a similar manner to that heretofore in use; but I then run the
partially reduced metal blanks or strips through between a series of pairs of rollers,
each having one of their diagonal opposite inner end or edge cylindrical surfaces, or
both edges on one roller, of a taper or "fillet" shape, which "scarfs " or reduces
the welding edges of the blanks in the process or at the same time as reducing the
whole surface and body of the blanks or strip itself.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended an explanatory sheet of drawings in which
Figure 1 represents an elevation of an ordinary rolling mill, and
"
Figure 2 a corresponding view of the part of the mill which would have its rolls
constructed and arranged to carry into practice my improved method of "scarfing
metal blanks. The left hand end of Figure 2 would preferably be coupled to the
right hand end of Figure 1, being only shown detached to come within the sheet of
drawings.
Figure 3 represents side and edge views of a metal blank as "scarfed" on its
opposite diagonal edges.
Referring to these drawings :-
In carrying my improvements into practice under one arrangement for rolling the
metal blanks or strips a Figure 3 with reduced diagonal opposite edges a' a', I first
pass the ingot through between broad plain flat surface rollers bb, with side guide
Hanges the between edge flat surface rollers and afterwards between one or
more of a series of pairs of V grooved or "diamond "rollers c, c', these rollers being
mounted on spindles between end supporting housings CC. Preferably there
would be three horizontal spindles C. C. C. used, placed over each other, and with
the rollers mounted on each. One end of each of these spindles would be connected
through portable spindles A. A. A. and ring couplings A' A' A¹ to the spindles of
helical wheels B, B, B, mounted between end housings B' B' the spindle of the
central wheel B being connected by a coupling B" to the shaft B' of a fly wheel
which may be driven direct by an engine, or by belt or other gearing so as to
rotate all the spindles and rollers in unison, the mechanism being all so far much of
a usual construction. The other ends of the spindles of the shaping and reducing
rolls I connect by corresponding portable spindles A* A* A* and ring
couplings A' A' A' to other three spindles, the ends of which are shown
at D, D, D, in Figure 2 placed horizontally in line with them, and mounted
between end carrying housings D', D¹. On the lower and central spindles 1 first,
preferably mount ordinary V grooved or "diamond" rollers d. d' and pass the metal
blanks through between them, and a corresponding shaped roller may be
mounted on the upper spindle D over these for use when operating on or producing
other work. I then mount in line a plain flat roller e with side guide flanges ell ell
on the upper spindle D and on the central spindle a grooved or half "diamond
roller e. On the one circumferential edge, say the left, of the upper roller e I form
a raised taper or "fillet" a close up to the flange e" and I form a corresponding
taper or fillet "a" on the right hand end or edge circumference and close to the
Hange of the lower roller e and the metal blank or strip a is passed between
these rollers e e' to commence rolling or forming the taper or "scarf" according to
my improvements on its opposite diagonal edges a, a¹. An ordinary "diamond"
roller may be mounted on the lower spindle in line with the upper pair e el for
other use.
I then pass the metal blank or strip through between a pair of plain
flat rollers, with their edges tapered or " filleted" at a², a² as described for the
former set, the one roller f' being mounted on the lower spindle, and the other fon
the central spindle, while a plain flat roller may be mounted on the upper
spindle in line with these. I then pass the metal blank or strip a through a pair of
plain surface rollers g, g' with tapered or "filleted " edges a' a' the one roller
being mounted on the upper spindle, and the other g' on the central spindle, and a
"

page_text: "
plain surface roller g may be mounted in line with these on the lower spindle.
The metal blanks or bands a with their tapered or "scarfed" opposite diagonal
edges a a¹ so far rolled and reduced are then passed over guides and between
a pair of hard chilled iron finishing rollers h¹ mounted on spindles H, H, between
end housings H, H', in line with the lower and central spindles D, D, of the former
rollers. These finishing rollers h, h', would be plain surface rollers and have the
tapers or "fillets" aa formed on them, to give the finishing, reducing, and
tapering or "scarfing" effect to the blanks a rolled between them; and they may
be of considerable length and have a number of tapers or "fillets
a² formed on
them at distances apart for passing the blanks or bands a through between them to
suit different sizes. The rollers h, with the "fillets" a' on them can be adjusted
by the pinching screws a³ so as to regulate the size of metal blank a being passed
through them to be "scarfed on opposite diagonal edges at a¹. The rollers which
are "filleted" at a' and through which the blanks a pass to get "scarfed" at a' are
indicated by the arrows in Figure 2. The blanks or bands a are now reduced and
tapered or " scarfed at a', a ready for being divided into suitable lengths and
curved up and reheated for being welded into tubes or like hollow articles,
otherwise in a usual manner. For "scarfing" or reducing the two parallel edges a¹
on the same side or surface of the blank a two tapered "fillets"a³ would be formed
on one of the rollers preferably the upper one of each set, as shown in the detached
view of one roller in Figure 4.
"
"
Tapered bars E shown detached in Figure 5, would or may be inserted through
slots E formed in the housing frames carrying the rollers as shown in the
housing C in Figure 1, these bars being formed with screws and fitted with nuts E'
at their one end, for adjusting the spindles and rollers to or from each other by
drawing the tapered bars out or pushing them in respectively, to give the proper
reducing effect and thickness of metal. The upper ends of the housing frames
would be fitted with the usual blocks, and hand operated screws E³ for regulating
or adjusting the pressure on the rollers. The usual guides would also be fitted for
guiding in the ingots and blanks a to the rollers, and where the reducing and
tapering rollers are used, portable guards or guides attached to weighted levers
would or may be fitted to prevent the blanks a while being delivered running round
the rollers.
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 :-
First. The method of "scarfing" metal blanks or strip bands consisting in passing
them (after they have been run through the ordinary rollers) through between a
series of pairs of rollers each having one of their diagonal opposite inuer end or edge
cylindrical surfaces, or alternatively both edges on one roller, of a taper or "fillet"
shape, so as to "scarf" or reduce by rolling action, the welding edges of the blanks
in the process or at the same time as reducing the whole surface and body of the
blanks. Substantially as herein described in reference to and by way of application
shown in the accompanying drawings.
"
Second. In a method of "scarfing" or reducing metal blanks or strip bands,
the forming of "fillets on opposite diagonal edges of the pairs of rollers, or
alternatively on both edges of one roller, for the purpose of "scarfing" or reducing
the welding edges of the blanks, substantially as and in the manner herein described
in reference to and shown in the accompanying drawings.
Third. Metal blanks or strip bands "scarfed" or reduced on their edges in the
rolling mills on the same or on opposite diagonal surfaces, intact without any cutting
or waste of metal, substantially as herein set forth.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.