Improvements for Making Cycle and other Frame Joints without Brazing.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements for Making Cycle and other Frame Joints without
Brazing.
We, WILLIAM RADFORD, of Stoke Green, Coventry, Cycle Works Manager, and
WILLIAM SMITH, of 17, The Butts, Coventry, in the County of Warwickshire,
Mechanical Engineer and Draughtsman, do hereby declare the nature of this
invention to be as follows:-
This invention consists in constructing and arranging and working in the
manner herin after described. The tube expanders for making joints or
connections in cycle or other tubular frames, or tubes without brazing. I will
describe my invention firstly for expanding a tube by the means of a split ring,
for internal expansion. The ring has a taper, conical, or parallel hole on the one
side, which is tapped or screwed, through the diameter of this hole the ring is
cut or slit through, on the opposite side of this ring across its diameter, there is a
smaller parallel hole which is lineable with the tapped or screwed hole. This
before mentioned ring could be used in two pieces.
There is also a taper, conical, or parallel screw or bolt which has at the opposite
end to the taper, conical, or parallel end, a smaller parallel end, which end is
screwed to receive an ordinary nut or nuts. The taper, conical, or parallel end
of screw must be screwed right hand thread, the other smaller parallel end must
be screwed left hand thread or vice versa, on the taper, conical, or parallel end
of screw, there is a square or other shaped head, or a square or other shaped
key hole, for screwing the screw into the split ring when requiring to expand
the ring when in the tube.
This before mentioned screw or bolt can be made of any suitable length,
preferably it should be in length longer than the diameter of the socket or sleeve,
to allow of a nut or nuts being screwed on the end which would come through the
socket or sleeve, and thus lock the screw or bolt in position.
The screw or bolt could be used without the smaller parallel end, if it was not
found necessary to lock same by the means of the nut or nuts on the smaller
parallel end. The socket or sleeve has a hole in it on one side of the diameter large
enough to admit the taper, conical, or parallel end of screw or bolt, and on the
opposite side or across the diameter there is a hole just large enough to admit the
smaller parallel end of screw or bolt, lineable with the larger hole, the socket or
sleeve has a groove all round its internal diameter. The tubes at each end which
are to be expanded, have similar size of holes in them to the joint socket or sleeve.
and in the same lineable positions, also the ends of the tubes may have one or several
slits or cuts in them longitudinally with the tube. The end of the tubes could be
cut off flush, or they may have a flanged or turned up ends, or projecting pieces on

page_text: the end on their external diameter. The flanged, turned up ends or projecting
pieces at end of tubes having been slit or cut through, when forced into socket or
sleeve press to-wards their centre of tube, but on coming lineable with the groove
in the socket or sleeve they expand and thus fit into the groove in the socket or
sleeve. The action of the parts are as follows:-In describing same I will use
a taper, conical screw with lock nut or nuts, also a flush cut end to the tube, and
a plain socket or sleeve without a groove. Take the cut or slit through expand-
ing ring and place same. into the end of the tube, with the screwed hole and cut
or slit through side of expanding ring opposite or under the large hole in the tube
which would then bring the small hole in expanding ring opposite or lineable.
with the small hole in the tube. Now place the end of tube into the socket or
sleeve with the large hole which is in one side of tube opposite or under the large
hole, in the socket or sleeve, which would then bring the small hole in the tube
opposite or lineable with the small hole in the socket or sleeve. Now screw in
from the larger hole on the side of socket or sleeve the taper, conical screw or bolt
untill it expands the expanding ring and tube internally, and the smaller parallel
end of bolt or screw will then be some distance through the other side of socket
or sleeve, on which screw on the lock nut or nuts which will then keep the
taper, conical screw in position. The before mentioned taper, conical, or parallel
screw or bolt may be used between two half discs, or, half plates of other forms,
oring or discs or plates which are only partly cut or slit through, across their
diameters or there abouts, or half spheres &c., and forced asunder giving internal
expansion to tube or tubes as before mentioned. If a parallel screw or bolt was
used it would have to be of a larger diameter than the screwed hole in expansion
ring or disc's or plates &c. or if the screwed hole was the same diameter as hole in
ring &c. the expanding ring disc's, plates &c. would have to be slightly closed
before being expanded.
Datad this Thil dox of Threamhom
71 1005
WILLIAM RADFORD.
WILLIAM SMITH.
COMPLETE SPECIFICATION (AMENDED).
Improvements for Making Cycle and other Frame Joints without
Brazing.
We, WILLIAM RADFORD, of Stoke Green, Coventry, Cycle Works Manager, and
WILLIAM SMITH, of 17, The Butts, Coventry, in the County of Warwickshire,
Mechanical Engineer and Draughtsman, 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:-
Improvements for making cycle and other frame joints without brazing to be as
follows:-
This invention consists in constructing and arranging and working in the
manner herein after described. The tube expanders for making joints or
connections in cycle or other tubular frames, or tubes with without brazing. We
will describe our invention, Firstly for expanding a tube by the means of a split
ring for internal expansion. The ring has a taper, conical or parallel hole on the
one side which is tapped or screwed, through the diameter of this hole. The ring
is cut or slit through, on the opposite side of this ring across its diameter there is a
smaller parallel hole, which is lineable with the tapped or screwed hole. There
is also a taper, conical or parallel screw or bolt, which has at the opposite end to the
taper, conical or parallel end, a smaller parallel end which end is screwed to receive

page_text: an ordinary nut or nuts. The taper, conical or parallel end of screw or bolt, must
be screwed right hand thread, the other smaller parallel end must be screwed
left hand thread, or vice versa. On the taper, conical or parallel end of screw there
is a square or other shaped head or a square or other shaped key hole for screwing
the screw or bolt into split ring. When requiring to expand the ring when in
the tube.
This before mentioned screw or bolt can be made of any suitable length prefer-
ably it should be in length longer than the diameter of the socket or sleeve, to
allow of a nut or nuts being screwed on the end which would come through the
socket or sleeve, and thus lock the screw or bolt in position.
The screw or bolt could be used without the smaller parallel end, if it was not
found necessary to lock same by the means of the nut or nuts on the smaller
parallel end. The socket or sleeve has hole in it, on one side of the diameter,
large enough to admit the taper conical, or parallel end of screw or bolt, and on
the opposite side or across the diameter there is a hole just large enough to admit
the smaller parallel end of screw or bolt, lineable with the larger hole. The
socket or sleeve has a groove all round its internal diameter. The tube at each
end which are to be expanded have similar size of holes in them to the joint socket
or sleeve, and in the same lineable positions. Also the ends of tube may have one
or several slits, cuts, or serrated at their ends longitudinally with the tube. The
end of the tube could be cut off flush, or they may have a flanged or turned up
ends or projecting pieces on the end on their external diameter. The flanged
turned up ends or projecting pieces at end of tubes having been slit, cut or serrated
through, when forced into socket or sleeve press towards their centre of tube, but
on coming lineable with the groove in the socket or sleeve they expand and thus
fit into the groove in socket or sleeve.
The action of the parts are as follows:-In describing same, we will use a taper,
conical screw or bolt, with lock nut or nuts, also a flush cut end to the tube, and a
plain socket or sleeve without a groove. Take the cut, or slit through expanding
ring and place same into the end of the tube, with the screwed hole and cut or
slit through side of expanding ring, opposite or under the large hole in the tube,
which would then bring the small hole in expanding ring opposite or lineable with
the small hole in the tube. Now place the end of tube into the socket or sleeve
with the large hole which is in on side of tube opposite or under the large hole in
the socket or sleeve, which would then bring the small hole in the tube opposite
or lineable with the small hole in the socket or sleeve. Now screw in from the
larger hole on the side of socket or sleeve the taper, conical screw or bolt, untill
it expands the expanding ring and tube internally, and the smaller parallel end
of bolt or screw will then be some distance through the other side of socket or
sleeve, on which screw on the lock nut or nuts, which will then keep the taper,
conical screw or bolt in position. If a parallel screw or bolt was used it would have
to be of a larger diameter than the screwed hole in expanding ring. Or if the
hole was screwed the same diameter in the split ring as the diameter of bolt or
screw, the expanding ring would have to be slightly closed before expanding.
The split ring or bush could be placed inside a short piece of tube or bush having
slit, cut or serrated end, which could be placed inside the frame or other tube, by
this means the cycle tube (or other tube) would be held fast or compressed between
socket or sleeve on the outside, and the short tube or bush on the inside.
In the accompanying drawings Figure 1, represents a longitudinal section,
Figure 2, represents a transverse section on line M, N, of the ring or bush joint with
a taper screw or bolt with locking bolt end.
F
A, is the ring or bush split at Q. C is the screwed head of bolt. B, the shank
end of bolt, E is square or other shaped end for screwing head between split
ring. F is the nut for screwing on shank end of bolt E, C, and B. for locking
same when in position, G, G, are the slits in tube or were they could be
serrated. Figure 3 represents a longitudinal section, Figure 4, represents a
transverse section on line 0, P. H is the ring or bush split at Q. J is the taper

page_text: screw for forcing apart or expanding ring. R is a recessed hole in taper screw, J,
for key for screwing screw into position. G, G are the slits in tube or were they
could be serrated:
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we would have it
understood that we are aware of the Specifications of Henry Belcher, Frederick
Easom, and Frederick Westwood, Nos. 24564, 25025, and 29715 A.D. 1896, and
that we do not claim anything described or claimed therein but we declare that
what we claim. is:-
1st. The improvements for making cycle and other frame joints without brazing,
constructed substantially as herein described and illustrated by Figures 1, 2, 3
and 4, of the accompanying drawings.
2nd. The split ring or bush A, with a tapered or conical screwed bolt head,
and a shank E, C, B, with locking nut F, for expanding a tube in a socket or
sleeve, substantially as herein described and illustrated by Figures 1 and 2
of the accompanying drawings.
3rd. The split ring or bush H, with a tapered or conical screw J, for expanding
a tube in a socket or sleeve substantially as herein described and illustrated by
Figures 3 and 4, of the accompanying drawings.
4th. The split ring or bush A with a tapered or conical screwed bolt head and
a shank E, C, B, with locking nut F, or a tapered or conical screw J, in split ring
or bush H, as illustrated by Figures 1, 2, 3 and 4, of the accompanying drawing to
be placed within a short tube or bush partly slit, cut or serrated, such short tube
or bush placed within a tube and such tube to be expanded in a socket or sleeve
by such means as herein described.
5th. The flanged or turned up ends or projecting pieces on ends of tube for
fitting into groove in socket or sleeve by such means substantially as herein
described.
Dated this 16th day of August 1898
WILLIAM RADFORD,
WILLIAM SMITH.