Improvements in Tubes for the Frames of Cycles and other Vehicles, and in the Mode of Making the Junctions of Tubes with their Sockets, and in the Manufacture of the same.
Year: 1896

page_text: Date of Application, 25th Nov., 1896
Complete Specification Left, 20th Feb., 1897-Accepted, 22nd May, 1897
Improvements in Tubes for the Frames of Cycles and other Vehicles,
and in the Mode of Making the Junctions of Tubes with their
Sockets, and in the Manufacture of the same.
We JOHN SPENCER, HERBERT SPENCER SMALLMAN and THOMAS HARRIS SPENCER,
of Globe Works, Wednesbury, in the County of Stafford, Manufacturers do hereby
declare the naturo of our said invention to bo as follows:-
Our invention has for its object improvements in tubes for the frames of cycles and
other vehicles and in the mode of making the junctions of tubes with their sockets
and in the manufacture of the same which enables us to make the joints or junctions
much more secure and less liable to rupture or breakage and also moro symetrical.
In making the junctions of tubes with their sockets in construction of cycle and
other framing we first stave up or thicken the ends of the tube to be joined to a
socket internally by confining the tube in a die or mould externally and in such a
manner that the tube is thickened beyond the length of the sockets gradually tapering
off internally to the normal thickness of the tube itself. The tube ends are then
placed in the sockets and brazed or soldered in that position. In some cases we may
shoulder down the tube externally after it is thickened so that the external portion of
the tube appears level in one piece with the socket which produces a very neat
appearance as well as a strong joint. By these means we avoid the necessity for a
liner piece which is now often used in the case of very thin tubes and the great
tendency to reduce the strength of the tube at or near the junction of the socket by
the process of brazing.
1000
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent for Applicants.
Improvements in Tubes for the Frames of Cycles and other Vehicles,
and in the Mode of Making the Junctions of Tubes with their
Sockets, and in the Manufacture of the same.
We, JOHN SPENCER, HERBERT SPENCER SMALLMAN, and THOMAS HARRIS SPENCER,
of Globe Works, Wednesbury, in the County of Stafford, Manufacturers, do hereby
declare the nature of our said invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
Our invention has for its object improvements in tubes for the frames of cycles

page_text: and other vehicles and in the mode of making the junctions of tubes with their
sockets and in the manufacture of the same which enables us to make the joints or
junctions much more secure and less liable to rupture or breakage and also more
symmetrical.
In making the junctions of tubes with their sockets in the construction of cycle and
other framing we first thicken the ends of the tube to be joined to a socket internally
by confining the tube in a die or mould externally and in such a manner that the
tube is thickened beyond the length of the sockets gradually tapering off internally
to the normal thickness of the tube itself. The tube ends are then placed in the
sockets and brazed or soldered in that position. In some cases we may shoulder
down the tube externally after it is thickened so that the external portion of the tube
appears level or in one piece with the socket, which produces a very neat appearance
as well as a strong joint. By these means we avoid the necessity for a liner piece,
which is now often used in the case of very thin tubes, and the great tendency to
reduce the strength of the tube at or near the junction of the socket by the process
of brazing.
In order that our invention may be clearly understood and more easily carried into
practical effect we have appended hereunto a double sized sheet of drawings, upon
which we have illustrated several examples of our improved method of joining tubes
with their sockets.
Figure 1 shows a piece of tube T with the ends thickened or staved up
internally.
Figure 2 shows a tube junction with the tube T considerably thickened internally
and then shouldered or reduced at t¹. The shouldered part of the tube T is then
forced home in the socket S which projects from the main member or tube M and is
then brazed, rusted or otherwise secured in its fixed position. It will be seen that by
this thickening the junction is quite strong immediately at the front 2 of the junction,
which is the position where fracture has usually taken place in the junctions of frames
where thin tubes have been hitherto brazed into the sockets without thickening.
Figure 5 is a similar view to Figure 2 but with pins or set screws s¹ to secure the
tube and socket together.
Figure 3 is very similar to Figure 2 except that the shouldering at t¹ is absent and
the tube is fastened by brazing, soldering, rusting or the like. Figure 4 is practically
the same junction but showing set screws or pins s' fastened into the tube to secure the
tube and socket S together.
Figure 6 shows two pieces of tube with their ends thickened or staved up and then
shouldered or reduced and joined together by the ferrule or collar F, which may be
brazed, rusted or otherwise sccured thereto.
The thickening of the tube at the end or ends may be accomplished in various ways
so as to increase the strength of the neck of the tube at that particular part outside
the socket where deterioration is most likely to take place during the process of
brazing, or the thickening may be done in dies or by any suitable process.
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
wo claim is
First. The improvements in the junctions of cycles and other frames consisting of
an ordinary parallel tube thickened at its end or ends as herein set forth so as to
extend beyond the mouth of the socket and then tapered down to its normal thickness
and united to the socket by such like means as brazing, rusting or screwing in the
manner substantially as herein set forth and as shown by Figures 1 to 6 upon the
accompanying sheet of drawings.
Second. The modo of making the junction of tubes with their sockets by thickening
the end of the tube internally and afterwards shouldering down the said end so as to
form a flush joint with the said socket and either with or without pins or screws
substantially as set forth and shown.

page_text: Third. Joining tubes together by thickening the ends of the tubes internally or
externally and afterwards shouldering down the said ends so as to form a flush joint
substantially as set forth and shown.
n
تمع
CL 1907
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent.