A NEW OR ⚫ IMPROVED PIPE OR TUBE, AND MEANS OF MANUFACTURING THE SAME
Year: 1883

page_text: LETTERS PATENT to John Gaskell and George Gaskell Exton, both of
Chippenham in the County of Wilts for an Invention of "A NEW OR
⚫ IMPROVED PIPE OR TUBE, AND MEANS OF MANUFACTURING THE SAME'
"
PROVISIONAL SPECIFICATION left by the said John Gaskell and George
Gaskell Exton at the Office of the Commissioners of Patonts on tho
29th October 1883.
JOHN GASKELL and GEORGE GASKELL EXTON both of Chippenham, in the
County of Wilts, "A NEW OR IMPROVED PIPE OR TUBE, AND MEANS OF
MANUFACTURING THE SAME
"
This Invention relates to the manufacture of pipes or tubes of wrought iron,"
steel, or other metal which is capable of being welded, the longitudinal seams or
joints of which are formed by folding or interlocking together the edges of the
sheets or plates forming such pipes or tubes or by folding or interlocking connecting
strips with the edges of such shoets or plates.
According to this invention, the folds constituting the longitudinal seams or
joints of such pipes or tubes, instead of being soldered or brazed together as
heretofore practised, are welded together, so as to form perfectly tight and solid
tubes. The welding may be effected by heating and hammering or pressing in the
usual way, or by any other suitable means,

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Gaskell and George Gaskell Exton in the Patent Office on
the 29th April 1884.
"
ร
JOHN GASKELL and GEORGE GASKELL EXTON, both of Chippenham, in the
County of Wilts 'A NEW OR IMPROVED PIPE OR TUBE AND MEANS OF
"
MANUFACTURING THE SAME
"
This invention relates to the manufacture of pipes or tubes of wrought iron,
steel, or other metal which is capable of being, welded, the longitudinal seams or
joints of which are formed by folding or interlocking together the edges of the
sheets or plates forming such pipes or tubes or by folding or interlocking connecting
strips with the edges of such sheets or plates.
According to this invention the folds constituting the longitudinal seams or
joints of such pipes or tubes (whether one or more of such seams or joints are
employed in. each pipe or tube) instead of being soldered or brazed together as
heretofore practised, are welded together, so as to form perfectly tight and
solid tubes.
The accompanying drawing illustrates a machine adapted for the purpose of
welding tubes in accordance with this invention. Figure 1 is a front elevation
and Figure 2 a transverse vertical section on line Xx of Figure 1. Figures 3, 4, 5
and 6 shew to enlarged scale some of the various kinds of longitudinal seam joints
to which this invention is applicable. Similar letters refer to like parts in each of
the Figures. A is the pipe or tubo with folded or interlocked longitudinal seam or
joint B. C is a fixed mandrel containing friction rollers D and E, the top one D
being grooved or recessed in order to receive the longitudinal seam B of the pipo
or tubo A as it passes through the machine. F and G are pressure rolls mounted
on shafts H and I which revolvo in suitable bearings in the frames or housings JJ,
and aro driven by gearing KK. If desired the pressure exerted on the seam B-
may be adjusted by means of pressure springs, weights or screws in a manner well
understood in connection with this class of machinery.
In carrying out this invention the pipe or tube A (or the longitudinal seam B
thereof only) is heated in any suitable furnace or in other convenient manner to a
welding heat, and is then slipped on to the mandrel C and driven between the
rolls Fand G by which means the thicknesses of metal forming the folded or
interlocked longitudinal seam or joint B are subjected to pressure between the
roll F and the friction roller D of the mandrel C, and the welding is thereby
effected. Of course in cases where the longitudinal seam or joint projects on the
outside of the pipe or tube the roll F would be furnished with the groove, and the
friction roller D would be plain. In some cases the rollers F and D may both be
plain, and generally the form of the rollers and mandrel may be varied to suit the
particular kind of joint employed.
If preferred the welding may be effected by beating and hammering, or by any
other suitable or known means.
Having now described the nature of the said invention and the manner in which
the same is to or may be carried into effect we would have it understood that we
do not claim the manufacture of pipes or tubes by folding or interlocking together
the edges of the sheets or plates forming such pipes or tubes, or by folding or
interlocking connecting strips with the edges of such sheets or plates, as this is
not novel; nor do we claim the manufacture of pipes or tubes with welded

page_text: longitudinal joints generally as such are already well known; but what we do
claim and desire to secure by the within in part recited Letters Patent is :-
First. The new or improved pipe or tube, constructed with folded or interlocked
longitudinal joint or joints, the folds, or folds and strips, forming such folded
or interlocked longitudinal joint or joints being welded together, as
hereinbefore described.
Second. For welding the folded or interlocked longitudinal joints of pipes or tubes,
the employment of apparatus consisting of the rolls F and G, the mandrel C,
and friction rollers D and E, combined, arranged, and operating as
⚫ herein before described, and illustrated in the drawings hereto annexod.
In witness whereof, I, the said George Gaskell Exton, for myself and on behalf
of the said John Gaskell have hereunto set my hand and seal this twenty-
sixth day of April in the year of Our Lord One thousand eight hundred and
eighty-four.
G. GASKELL EXTON (L.S.)