Improvements in and relating to Hydraulic Rivetting in connection with Tubes and Tubular Articles.
Year: 1896

page_text: Date of Application, 30th Jan., 1896
Complete Specification Left, 16th Oct., 1896-Accepted, 21st Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Hydraulic Rivetting in connection
with Tubes and Tubular Articles.
We, A. & J. STEWART AND CLYDESDALE LIMITED, Tube Manufacturers, of
41 Oswald Street, in the City and County of Glasgow, and JOHN WOTHERSPOON,
Engineer, of Gartsherrie Cottage, Coatbridge, Lanarkshire, do hereby declare
the nature of our invention to be as follows:-
This invention has reference to improvements in and relating to hydraulic
rivetting in connection with tubes and tubular articles, and is specially applicable
for rivetting a metal strap over the welded part of tubes of small diameter and
great length.
According to these improvements each rivet is held in a holder carried on a
moveable frame which travels each rivet through the tube to the part where the
punched or drilled hole is formed, and mechanism is used to elevate the holder to
push the rivet through the hole for the tool of an hydraulic rivetting machine to
art on same and effect the rivetting action on upper surface of metal strip. This
is effected by placing the holed part of strip and tube over a semicircular surfaced
rest or support, in line with the vertical acting tool of an hydraulic rivetting
machine. A frame or slipper of curved or segmental shape on lower surface
carries a hollow rivet holder between cheeks or guides at its central upper part.
Longitudinal bolts or rods extend from a crosshead on this frame to a transverse
bar located some distance away and a central rod with an inclined or undulating
wedge surface on its one end passes through frame below rivet holder, and this rod
extends through an eye in aforesaid transverse bar, and has a screw threaded
surface formed on its outer end where the screw threaded boss of an operating
handle is mounted, while a distance piece is mounted over rod between this bandle
and the transverse bar. A lever has its end sccured to a point on the central rod
operating rivet holder, while another lever has its end secured to one of the
longitudinal rods connected to frame, and both levers are fulcrumed to move on a
pin some distance from end.
The slipper frame is withdrawn to the end of the tube for the insertion of each
rivet, the rivet being placed inside the recessed part of frame, with the bead
resting on the rivet holder. The frame is then pushed along the tube until it
comes opposite the hole into which the rivet is to be placed. The levers are then
simultaneously operated in reverse directions to keep the frame in position and
bring the undulating wedge to force up the rivet, and the turning of the handle on
screw threaded part of central rod will tightly pull in the wedge and retain same
in position to support the holder while the hydraulic pressure on the rivet former
is acting on the rivet. The reversing of the handle on central rod and of the
levers will lower the rivet holder, and the frame can be drawn out to end of tube
for the insertion of the next rivet.
Dated 29th January 1896.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.

page_text: Improvements in and relating to Hydraulic Rivetting in connection
with Tubes and Tubular Articles.
We, A. & J. STEWART AND CLYDESDALE, LIMITED, Tube Manufacturers, of
41 Oswald Street, in the City and County of Glasgow, and JOHN WOTHERSPOON,
Engineer, of Gartsherrie Cottage, Coatbridge, Lanarkshire, do hereby declare
the nature of our invention, and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement in
writing that is to say :-
This invention has reference to improvements in and relating to hydraulic
rivetting in connection with tubes and tubular articles, and is specially applicable
for rivetting a metal strap over the welded part of tubes of small diameter and
great length.
And in order that our said invention and the manner of carrying same into
practice may be properly understood, we have hereunto appended an explanatory
sheet of drawings in which Figure 1 represents a longitudinal elevation, and
Figure 2 a plan view of our improved appliances, while Figure 3 is an end view
showing these appliances inside a tube in the act of being rivetted.
Referring to these drawings :-
According to these improvements each rivet is held in a holder carried on a
moveable frame which travels each rivet through the tube to the part where the
punched or drilled hole is formed, and mechanism is used to elevate the holder to
push the rivet through the hole for the tool of an hydraulic rivetting machine to
act on same and effect the rivetting action on upper surface of metal strip. This
is effected by placing the holed part of strip T and iube T over a semi-circular
surfaced rest or support A in line with the vertical acting tool M of an hydraulic
rivetting machine. A frame or slipper E of curved or segmental shape on lower
surface carries a hollow rivet holder F between cheeks or guides F at its central
upper part. Longitudinal bolts or rods B extend from a crosshead C on this
frame E to a transverse bar K located some distance away, and a central rod H
with an inclined or undulating wedge surface G on its one end passes through
frame E below rivet holder F and this rod H extends through an eye in aforesaid
transverse bar K and has a screw threaded surface formed on its outer end where the
screw threaded hoss of an operating handle L is mounted, while a distance piece J
is mounted over rod H between this handle L and the transverse bar K. A lever I
has its end secured to a point I on the central rod H operating rivet holder while
another lever i has its end secured at to one of the longitudinal rods B connected
to frame, and both levers are fulcrumed to move on a pin X some distance from
end.
The slipper frame E is withdrawn to the end of the tube T for the insertion of
each rivet, the rivet being placed inside the recessed part of frame, with the head
resting on the rivet holder F. The frame E is then pushed along the tube T until
it comes opposite the hole in the strip T' into which the rivet is to be placed. The
levers I are then simultaneously operated in reverse directions to keep the frame
iu position and bring the undulating wedge G to force up the rivet t, and the
turning of the handle L on screw threaded part of central rod K will tightly pull
in the wedge and retain same in position to support the holder F while the hydraulic
pressure on the rivet former is acting on the rivet. The reversing of the handle L
on central rod K and of the levers Ii will lower the rivet holder F and the frame.
can be drawn out to end of tube T for the insertion of the next rivet.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
First. The method of carrying and holding rivets and rivetting tubes and
tubular articles by hydraulic pressure substantially as herein described in reference
to and shown in the accompanying drawings.
Second. The herein described appliances for use in connection with the hydraulic
rivetting of tubes and tubular articles, substantially as shown in reference to the
accompanying drawings.
Dated the 15th day of October 1846
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.