Apparatus therefor.
Year: 1887

page_text: Date of Application, 15th Jan., 1887
Complete Left, 17th Oct., 1887
Complete Accepted, 14th Apr., 1888
Apparatus therefor.
I, GEORGE EDWARD VAUGHAN, of No. 57, Chancery Lane, in the county of
Middlesex, Patent Agent, do hereby declare the nature of this invention, being a
communication to mo from abroad by Reinhard Mannesmann and Max Mannesmann,
both of Remscheid, Rhenish Prussia, Germany, Manufacturers, to be as follows:-
This invention relates to the manufacture of tubes from solid blocks or blanks by
passing the same between two or more conical rollers the peripheries of which are
furnished with stretching rolls or threads and stretching furrows or grooves and it
consists of improvements in the invention described in the Complete Specification of
Letters Patent No. 1167, dated the 27th day of January 1885, and granted to
Herbert John Hadden.
The apparatus hereinbefore referred to is constructed in the following manner:
Two or more conical rollers, the working surfaces of which are inclined in a manner
to give a conical shape to the blank between them, are arranged, obliquely to each
other, to revolve in suitable bearings so constructed that all or any of the rollers may
be readily adjusted laterally, vertically and in respect of the angle of inclination to its
fellow or fellows, the adjustment being effected either while the machine is at rest or
when it is in motion. All the rollers are laid in the same direction, that is to say,
the ends of larger diameter are all situated at the same end of the apparatus. The
peripheries of the rollers have formed therein a number of spiral grooves. The said
grooves are disposed in screwlike or spiral lines with a pitch greater than corresponds
to the feeding motion of the blank or block, the consequence being that the material
is displaced or shifted at the periphery of the blank and the latter issues from the end
of emergence of the apparatus in the form of a pipe or tube, a cylindrical passage
being formed through the whole length of the same. The said grooves are
comparatively deep and narrow at the smaller ends of the rollers and gradually
decrease in depth and increase in width as they approach the opposite ends until they
disappear at the end of emergence in order to produce a perfectly smooth tube.
the pitch of the stretching grooves or rolls increases, a space gradually increasing in
As

page_text: as those
width will be left between each pair of grooves or rolls and in these spaces may be
made new grooves or rolls formed in substantially the same manner
hereinbefore described. One or more of the rollers is or are caused to revolve by any
suitable power and means. When two rollers are employed and both are revolved,
they revolve in the same direction in consequence of which the opposite lying working
surfaces move in an opposite direction, and a plain guide or roller is so arranged in
connection therewith as to keep the blank in proper contact with the rollers. When
three or four revolving rollers are used all three or four are revolved in the same
direction.
The solid blank or block to be rolled is heated and then introduced between the
conical rollers at the smaller onds and emerges from the opposite end of the apparatus
in the form of a tube.
It will be readily understood that a mandril may be employed in connection with
the apparatus hereinbefore described, as stated in the specification of the patent
herein before referred to, for increasing the inner diameter of the tube or for giving
various forms to the interior surfaces of the same.
When it is desired to roll the metal twice, each roller is, in some cases, made
double, that is to say, the centre of each roller is made of the largest size required
and the roller is thence tapered to both ends. In this case the blank having been
passed through the first sides of the rollers the angle of the rollers is reversed and the
blank is passed backwards between the opposite sides of the peripheries of the rollers,
the spiral grooves on the rollers being formed in such a manner, as will be well
understood, that this movement of the blank in the reverse direction is effected
without changing the direction of the revolution of the rollers.
Dated this 15th day of January 1887.
VAUGHAN & SON,
Agents for the Applicant.

page_text: Apparatus therefor.
1, GEORGE EDWARD VAUGHAN, of No. 57, Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention, being a
communication to me from abroad by Reinhard Mannesmann, and Max Mannesmann,
both of Remscheid, Rhenish Prussia, Germany, Manufacturers, and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement:―
This invention as hereinafter claimed, relates to the manufacture of tubes from
solid blocks or blanks by passing the same between two or more conical rollers,
the peripheries of which are furnished with stretching corrugations, and it relates to
improvements on the invention described in the specifications No. 1167, of 1885.
No. 9939 of 1886 and No. 6453 of 1887.
The apparatus is constructed in the following manner :-Two or more conical
rollers, the working surfaces of which are inclined in a manner to give a conical shape
to the blank between them, are arranged obliquely to each other, to revolve in suitable
bearings so constructed that all, or any of the rollers, may be adjusted laterally,
vertically, and in respect of the angle of inclination to its fellow or fellows. All the
rollers are laid in the same direction, that is to say, the ends of larger diameter are
all situated at the same end of the apparatus. The peripheries of the rollers have
formed on them a number of helical corrugations, so that a blank or block of metal
fed in between the rollers at the one end of the apparatus issues from the other end
in the form of a pipe or tube, a cylindrical passage being formed through a part of
the length of the same. The said corrugations gradually disappear towards the end
of emergence in order to produce an externally smooth tube, and this is more
effectually attained by making the end parts of the rollers cylindrical, as shown in the
accompanying drawings. The rollers are caused to revolve by any suitable power
and gearing in the same direction so that their working surfaces move in opposite
directions rolling the blank between them.
The accompanying drawings respectively represent, in central longitudinal section
a metallic blank at various stages in its progress between a pair of conical rollers, the
working faces of which converge, and the axes of which are oppositely inclined
relatively to the path through which the blank travels...
Figure 1. shows a pair of conical rollers one on each side of a metallic blank,
which is represented in section. The working faces of the rollers are helically
corrugated, the corrugations having a smaller pitch at the end of entry and a greater
pitch at the end of emergence. Figure 2 shows a pair of rollers with the blank
at a further stage of its progress. In this figure the corrugations are deeper and of
quicker pitch at the end of entry than at the end of emergence. Figure 3. 4. and 5.

page_text: show the blank at still further stages of its progress, between rollers with variously
modified forms of their corrugations.
The drawings do not represent the gearing by which the rollers are driven, nor the
framing in which they are mounted as diagonal-rolling machines are well known.
When three or more rollers are employed for acting simultaneously on the blank,
they serve to keep it contral; but if only two rollers are employed, suitable guides
are provided for properly supporting and guiding the blank during its paassage
between the rollers. Such guides, however, having been heretofore used in machines
of analogous character, are not shown in the drawings.
The conical rollers A. a. are represented as arranged on each side of a horizontal
path along which the blank B. travels between the convergent working faces A¹ a¹.
The vertical planes of the axes of the rollers A. a. are parallel, but these axes incline
respectively in opposite directions from the horizontal plane as indicated in the
drawings, which represent the rollers respectively as being tipped in opposite directions,
so that the larger end A' of the roller A. and the smaller end as of the roller a.
are seen.
In Figure 1. the blank B. is represented as being just engaged by the rollers A.
and a.
The pinching effect produced by the rollers is illustrated by the annular
flange b. projecting from the front end B₁ of the blank the tubular formation being
thus initiated.
In Figure 2. a larger quantity of metal is represented as having been forced forward
by the action of the rollers, lengthening the flango b.
A still further lengthening is represented in figure 3.
In figure 4. the tubular formation & is represented as being completed, in that
part of the blank which has issued from between the rollers. The rear end B' of
the blank is represented in figure 4. as being carried forward between the rollers, and
exhibiting around its edge a slight annular projection, 6 produced by the pinching
action of the rollers.
Figure 5. illustrates the concluding portion of the operation, and shows the solid
rear end of the blank of the same diameter as the tube externally.
It is to be understood that in treating metals such as steel or copper the solid blank
or block is heated, before being introduced between the rollers at their smaller ends.
It emerges from the opposite end of the apparatus in the form of a tube or hollow
body, with its rear part solid, if no mandril is used.
A mandril, however, may be employed in connection with the apparatus as described
in the specifications above referred to, and as shown in Figure 3, for effecting the
formation of the tube throughout the whole length of the blank, and, when desired, for
increasing and smoothing the bore of the tube, or for giving various forms to its
interior surface.
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 manufacture as herein described of pipes or tubes by passing solid metal
blocks or blanks between diagonally acting rollers such as are herein referred to.
Secondly. For the manufacture of pipes or tubes in the manner referred to in the
preceding claim the use, with or without a mandril, of rollers constructed with helical
corrugations and arranged as herein described and represented in the accompanying
drawings.
Thirdly. In diagonal tube rolling apparatus, diagonally acting rollers having their
axes inclined towards each other and in different planes the working faces of such
rollers having helical corrugations, substantially as hereinbefore described and shown
in the accompanying drawings.
Fourthly. In diagonal-rolling machines, the employment of a mandrel in conjunction
with diagonally acting conical rollers arranged on different sides of the path
through which the blank travels, the larger ends of such rollers being nearer together
than the smaller ends, substantially as hereinbefore described.

page_text: Fifthly. In diagonal rolling machines, diagonal acting conical rollers arranged on
different sides of the path through which the blank travels, and having their larger
ends nearer together than their smaller ends, the working surfaces of such rolls being
provided with helical corrugations, substantially as hereinbefore described.
And sixthly. In diagonal rolling machines the employment of a mandrel, arranged
as above stated, in conjunction with diagonally acting conical rollers arranged on
different sides of the path through which the blank travels and having their larger
ends nearer together than their smaller ends, the working surfaces of such rollers
being provided with helical corrugations, substantially as hereinbefore described.
Dated this 10th day of April 1888.
VAUGHAN & SON,
Agents for the Applicant.