Improvements in Riveting Apparatus.
Year: 1891

page_text: Date of Application, 13th Aor., 1891
plete pecification Left, 12th Jan., 1892-Accepted, 13th Feb.. 1892
PROVISIONAL SPECIFICATION.
Improvements in Riveting Apparatus.
1. WILLIAM Bow, of the Thistle Works, Paisley, in the County of Renfrew,
North Britain, Engineer, do hereby declare the nature of this invention to be as
follows, that is to say :-
My said invention has for its object to improve and expedite the operation of
riveting, and it comprises apparatus which may be advantageously used with plates
and rivets of various dimensions, but which is of especial advantage for riveting
the plates used in the construction of steam boilers for the very high pressures now
being employed.
In carrying out my invention I may employ any suitable apparatus for hammering
or closing the outer end of the rivet, but I combin therewith improved apparatus
for holding up the other end of the rivet so as to properly resist the force of the
hammering or closing strokes.
In the case of a cylindrical boiler and when fixing rivets in a circle round it, I
have mounted on a centre stud or on an axial bar temporarily fixed by means of a
plate and bolts to the end of the boiler or in any other convenient way, an hydraulic
cylinder provided with a ram the outer end of which carries a head to bear on and
hold up the rivet. The water for acting in the cylinder is led to it by a flexible or
jointed pipe, and a valve workable by means of a hand lever is provided for
admitting and discharging the water as require 1. An arm fixed to the cylinder
extends oppositely to the ram and is counterweighted so that the cylinder and parts
connected to it can be easily turned into any required position.
When in the case of a cylindrical boiler or other cylinder it is convenient to deal
with a pair of diametrically opposite rivets at the same time, the hydraulic cylinder
When a
may be arranged with two rams extending from opposite ends of it.
straight row of rivets has to be fixed the bar carrying the cylinder and holding up
ram is to be fixed in a suitable position parallel to the row of rivets, and the ram is
to be moved along the bar from rivet to rivet as the work proceeds.
Dated this Eleventh day of April 1891.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Riveting Apparatus.
I, WILLIAM Bow, of the Thistle Works, Paisley, in the County of Renfrew,
North Britain, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to he particularly described and a-cer-
tained in and by the following statement, that is to say :-
My said invention has for its object to improve and expedite the operation of
riveting and it comprises apparatus which may be advantageously used with plates
and rivets of various dimensions, but which is of especial advantage for riveting the
plates used in the construction of steam boilers for the very high pressures now
being employed.
In carrying out my invention, I may employ any suitable apparatus for closing
the outer end of the rivet, but I combine therewith improved apparatus for properly
holding up the other end. In the case of a cylindrical boiler, and when fixing
rivets in a circle round it, the said apparatus consists of a centre stud or axial bar,
temporarily fixed to the end plate, and on which is mounted an hydraulic cylinder,
-Price xd.

page_text: acted on by water led to it in a flexible pipe, and provided with a ram which carries
a head to hear on and hold up the rivet. An arm fixed to the cylinder extends
oppositely to the ram, and is counterweighted so that the apparatus can be easily
turned into any required position.
And in order that my said invention and the manner of performing the same may
be properly understood, I hereunto append a sheet of explanatory drawings, to be
hereinafter referred, and showing an example of my apparatus for improving and
facilitating the operation of riveting.
Figure, 1, of the drawings is a sectional plan and Figure, 2, is a side elevation
of my improved apparatus as employed in riveting the circumferential seam of a
cylindrical steam boiler.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
As shown in the drawings, and when fixing rivets in a circle, I have a centre stud
or axial bar, A, temporarily fixed to the end of the boiler, by means of bolts, B,
and a plate, C, between which and the boiler plate, D, a suitable packing of
wood, E, is inserted or in any other convenient way and on this centre stud there
is mounted an hydraulic cylinder, F. provided with a ram, G, the outer end of
which carries a head, 11, to bear on and hold up the rivet, J. The water for
acting in the cylinder, F, is led to it by a flexible or jointed pipe, K, and a valve, L,
workable by means of a hand lever, M, is provided for admitting by the pipe, K,
and discharging by the pipe, N, the water as required. An arm, P, fixed to the
cylinder, F, extends oppositely to the ram, (i, and is counterweighted by a block
of metal, Q, or other suitable device, so that the cylinder, F, and parts connected
to it can be easily turned into any required position. When pressure has been
brought to bear on the inner end of the rivet, J, by means of the hydraulic
cylinder, F, and ram, G, carrying the head, II, the outer end is closed by hammering
or by means of any suitable apparatus. On a rivet being completed the valve, L,
is shifted so as to allow water pressure passing through a pipe, R, to act on the
annular front surface of a piston on the ram, G, so as to withdraw the ram inwards
with its head, H, clear of the rivet, J.
When in the case of a cylindrical boiler it is convenient to deal with a pair of
diametrically opposite rivets at the same time, the hydraulic cylinder, F, may be
arranged with two rams, (i, extending from opposite ends of it.
When a straight row of rivets has to be fixed the bar, A, carrying the cylinder, F,
and holding up ram, G. is to be fixed in a suitable position parallel to the row of
rivets, and the cylinder is to be moved along the bar from rivet to rivet as the
work proceeds.
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 :-
:―
In riveting apparatus, employing for holding up an hydraulic cylinder with ram
and counterweight mounted on a bar round-upon or along which it can be moved
substantially as hereinbefore described.
D
1000
EDMUND HUNT,
Applicant's Agent.