IMPROVEMENTS IN APPARATUS FOR RIVETTING THE FLANGES OF BOILER TUBES
Year: 1878

page_text: LETTERS PATENT to Charles John Galloway and John Henry Beckwith, both
of Knott Mill Iron Works, Manchestor, in the County of Lancaster, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR RIVETTING THE FLANGES
OF BOILER TUBES."
Sealed the 30th August 1878, and dated the 18th June 1878.
PROVISIONAL SPECIFICATION left by the said Charles John Galloway and
Jolin Henry Beckwith at the Office of the Commissioners of Patents on the
18th June 1878.
CHARLES JOHN GALLOWAY and JOHN HENRY BECKWITH, both of Knott Mill Iron
Works, Manchester, in the County of Lancaster. " IMPROVEMENTS IN APPARATUS
FOR RIVETTING THE FLANGES OF BOILER TUBES."
In rivetting flanges of tubes, such as those known as "Calloway tubes" in boiler
flues a great difficulty is experienced in supporting the head of the rivet within the
flue or shell while the pressure or blow is directed on its opposite end outside the
flue or shell. Our Invention relates to apparatus intended to facilitate this opera-
tion, which we effect in the following manner:-Having placed the tube in position
with its flanges bearing on the shell, we place at each end of the tube a strong boss
or mouth-piece, and we pass through both these bosses a tie bolt extending through
the tube, securing the bosses thereon by keys or nuts which press the bosses firmly
against the ends of the tube. On this bolt as an axis we mount a hydraulic,
steam, or other rivetter, so that it can be swivelled round on the bolt to direct its
rivetting tool successively on the rivets of the tube flange. A workman inside the
tube or shell is provided with a bar adjustable in length, extending the distance
between the rivet head of the flange at the one end of the tube and the flange at
the other end of the tube, and for each rivet successively he places this bar to act

page_text: as a strut, supporting the head of the rivet on the inside, while the rivetter com-
presses the end of the rivet on the other side.
It is advantageous to provide the rivetting machine in duplicate, one on each
side of the central bolt, and to work them simultaneously, so as to avoid cross
strain on the bolt.
5
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles John Galloway and John Henry Beckwith in the Great Seal
Patent Office on the 17th December 1878.
CHARLES JOHN GALLOWAY and JOHN HENRY BECKWITH, both of Knott Mill Iron
Works, Manchester, in the County of Lancaster. "IMPROVEMENTS IN APPARATUS
FOR RIVETTING THE FLANGES OF BOILER TUBES."
In riveting flanges of tubes, such as those known as "Galloway" tubes, in boiler
flues a great difficulty is experienced in supporting the head of the rivet within the
flue or shell while the pressure or blow is directed on its opposite end outside the
flue or shell. Our Invention relates to apparatus intended to facilitate this opera-
tion, which we effect in the following manner:-Having placed the tube in position
with its flanges bearing on the shell, we place at each end of the tube a strong boss
or mouth-piece, and we pass through both these bosses a tie bolt, extending through
the tube, securing the bosses thereon by keys or nuts which press the bosses firmly
against the ends of the tube. On this bolt as an axis we mount a hydraulic, steain, 2
or other rivetter, so that it can be swivelled round on the bolt to direct its rivetting
tool successively on the rivets of the tube flange. A workman inside the tube or
shell is provided with a bar, adjustable in length, extending the distance between
the rivet head of the flange at the one end of the tube and the flange at the other
end of the tube, and for each rivet successively he places this bar to act as a strut,
supporting the head of the rivet on the one side while the rivetter compresses the
end of the rivet on the other side.
It is advantageous to provide the rivetting machine in duplicate, one on each
side of the central bolt, and to work them simultaneously, so as to avoid cross strain
on the bolt.

page_text: bolt D, secured by a fixed toothed collar E at the upper end, and by a screw nut at
the lower end. On the projecting end D' of the bolt is mounted a sleeve F, having
strong side checks F', in which are mounted the trunnions G₁ of the hydraulic
rivetter G, which may be of any suitable known construction. The middle part of
the rivetter is connected to the checks F' by tie links H, the eyes of which are
connected to a slide I in a loop on the rivetter, adjusted by a screw K, so that by
turning this screw in one direction or the other the rivetter is turned on its
trunnions into a more or less angular position, as shown respectively at Figures 1
and 2, to suit the varying distances of the rivets from the centre line of the tube.
For this purpose also the die G² of the rivetter is not fixed to the ram but works
in a slide G³ formed on the latter, in which it can be adjusted to either of the
two extreme positions, shown at Figures 1 and 2, by means of the screw L.
For bringing the rivetter into position for acting on the different rivets round the
flange of the tube the sleeve F, together with the rivetter, is turned round upon D'
and is held in position by means of a sliding catch M, raised and lowered by the
lover N, and taking into one or other of the teeth of the toothed collar E.
The strut O for supporting the rivet from the inside against the pressure of the
rivetter has at its upper end a sliding abutment O¹, with recessed face fitting the
head of the rivet, against which it is pressed firmly when placed in position by
driving the wedge P, the lower end of the strut being recessed so as to rest upon
one of the lower rivet heads, as shown.
The sleeve F is supported against the upward strain exerted by the rivetter by a
strong collar D screwed on the end of the bolt D¹, which also carries a rotatable
union Q, through which the fluid pressure is conveyed to the rivotter by the
pipe R.
Having now described and particularly set forth the nature of the said Invention,
and the manner of carrying the same into effect, we would have it understood that
we claim,-
First. The use for rivetting up the flanges of boiler tubes of a bar or bolt passed
through the tube, to which it is temporarily secured by means of bosses, and serving
as an axis on which a steam, hydraulic, or other rivetter is mounted so as to be
turned round into different positions for acting upon the different rivets, sub-
stantially as herein described.
Second. The use in combination with the rivetting apparatus referred to in the
preceding claim of a strut with adjustable abutment for supporting the inner end
of the rivet while it is being acted upon by the rivetter, substantially as herein
described.
In witness whereof, we, the said Charles John Galloway & John Henry
Beckwith, have hereunto set our bands and seals, this Thirteenth day of
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