Improvements in Apparatus for Corrugating by Rolling Tubes of Conical Form.
Year: 1897

page_text: Date of Application, 18th June, 1897
Complete Specification Left, 18th Mar., 1898-Accepted, 18th June, 1898
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Corrugating by Rolling Tubes of
Conical Form.
I, JOHN IRELAND BOOKER, of 57, Tong Road, Leeds, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention refers to apparatus for the manufacture of conical corrugated
flues, and the object of the said invention is to enable the corrugations to be formed
in an easy and efficient manner without straining or unduly drawing the material
forming the flues.
According to my invention, I employ a pair of conical rollers one above the
other, the distance between the said rollers being adjustable by means of hydraulic
or other power which is imparted to the bearings carrying one of the rollers.
Auxiliary conical rollers are mounted at the sides of the main rollers, the said
auxiliary rollers being provided with corrugations, and all the rollers above
described are mounted with their axes all converging to one common point. The
corrugations on the rollers vary in size, being larger at the large ends of the
rollers, and smaller at the small ends of the rollers, and the formation of the rollers
with corrugations reducing in size in proportion to the reduction of size of the
rollers, enables conical tubes to be rolled with circular corrugations in same,
without running the said tubes out of line or unduly straining or drawing the
material.
Dad 10
JT.1007
BREWER & SON,
London and Leeds, Agents for the Applicant.
Improvements in Apparatus for Corrugating by Rolling Tubes of
Conical Form.
I, JOHN IRELAND BOOKER, of Tong Road, Leeds, in the County of York,
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement:―
This invention refers to apparatus for corrugating by rolling tubes of truncated
conical or tapering form, and the object of the said invention is to enable the
corrugations to be formed in an easy and efficient manner without straining or
unduly drawing the material forming the tubes.
In the accompanying drawings Figs. 1 and 2 show in end and side elevation
respectively so much as is needful to illustrate my invention of an apparatus or

page_text: mill for corrugating truncated conical or tapering tubes of the kind forming the
subject of my previous Patent No. 14797 of 1897.
1 is the bed and 2, 2 the housings of the mill. 3 and 4 are the corrugating
rollers whose ends are journalled in bearings 3, 4ª carried by the housings 2;
the rollers 3, 4, are of truncated conical or tapering form and are
corrugated
or formed with alternating grooves and ridges, the sizes
or depths and widths of which vary proportionately to the variations in the
diameter of the tube to be corrugated, the diameter of the rollers and the size of
the corrugations thereon becoming greater towards the ends of the rollers which
grip the larger portion of the tube under treatment.
The rollers 3 and 4 are arranged one above the other as shown, the distance
between the said rollers being adjustable by means of hydraulic or other mechanism
acting upon the bearings 4 carrying the lower roller 4, the axis of which is
horizontal. The upper roller 3 is so arranged that its axis will be at such an
angle to the axis of the lower roller 4 that, upon the latter being raised into the
position for corrugating the tube under treatment (indicated by dotted lines in
the drawings) will be gripped evenly between the rollers throughout its length.
The top roll 3 extends some distance beyond the right hand bearing 3ª which is
carried in a movable headstock or carriage not shown, said carriage being capable
of being moved endwise together with the roller 3 by hydraulic or other means as
well understood for the purpose of allowing the tube under treatment to be placed
in position within and removed from the mill. 5, 5 are auxiliary or guide rollers
mounted at the sides of the main rollers, and provided, like the main rollers, with
corrugations of varying size; in the example the rollers 3, 4 and 5 are so mounted
that their axes converge to one common point as indicated in Fig. 2 of the draw-
ings, but, in some cases, the axes of the main rollers 3, 4 may converge to one
point and those of the auxiliary or guide rollers 5 to another point in the same
plane.
In corrugating a tapering tube by means of tapering rollers formed with
corrugations decreasing in size in proportion to the reduction of size of the rollers
as hereinbefore described, circular corrugations can be rolled in the tube without
the rollers causing the said tubes to run out of line or unduly straining or drawing
the material of which the tube is formed, as would be the case if the, rollers or
their corrugations, or both, were of the same size throughout the length of the
roller owing to the tendency rollers in which any two points on their surface. travel
equal distances during each rotation have to rotate the smaller end of a tapering
tube gripped by them somewhat faster than the larger end.
11.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. Apparatus for corrugating by rolling conical or tapering tubes in which the
corrugating rollers are of conical or, tapering form with corrugations of decreasing
dimensions from the larger end of the roller to the smaller end thereof, and are so
arranged that their axes converge substantially as described.
2. My improved, apparatus constructed, arranged and operating substantially
as described, with reference to and shown in the accompanying illustrative
drawings.
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1000