Process and Apparatus for Fixing Metallic Tubes on each other.
Year: 1895

page_text: Date of Application, 28th Nov., 1895
Complete Specification Left, 20th Dec., 1895-Accepted, 14th Mar., 1896
PROVISIONAL SPECIFICATION.
Cold Process and Apparatus for Fixing Metallic Tubes on each
other.
I, PETER JENSEN of 77 Chancery Lane, London, Chartered Patent Agent do
hereby declare the nature of this invention, a communication to me from abroad
by the Firm of Hoyer & Glahn of Schönebeck on the Elbe, Germany, Cycle
Manufacturers, to be as follows:-
This cold process for fixing metallic tubes on each other consists in pushing the
tube ends one over the other to a suitable distance and then forming one or more
annular bulges in both either from within to without or from without to within so
that the tubes are held securely together against end wise displacement.
An apparatus for making external annular bulges may consist of a tubular
cylinder with internal screw thread and with handle or other means for rotating it,
a spindle with corresponding screw thread and provided at one end with handle or
other means for rotating it and having at the other end a cone part, and a number
of hard steel balls which are arranged round the said cone part and held in holes
somewhat smaller than their diameter, said holes being provided in the cylinder or
in an attachment thereto. By rotating the spindle and feeding it forward in the
cylinder the cone on the end of the spindle will force the balls outwards and by
the rotation of the spindle they will form the bulge in the inner tube and in the
outer tube in the desired place.
The invention is of special advantage for uniting the tubular members of cycle
frames.
Deted this 28th day of Nobo 1005
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
Cold Process and Apparatus for Fixing Metallic Tubes on each
other.
I, PETER JENSEN of 77 Chancery Lane, London, Chartered Patent Agent, do
hereby declare the nature of this invention, (a communication to me from abroad
by the Firm of Hoyer & Glahn of Schönebeck on the Elbe Germany, Cycle
Manufacturers,) and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This cold process for fixing tubes on each other consists in pushing the tube
ends one over the other to a suitable distance and then forming one or more bulges
in both either from within to without or from without to within so that the tubes
are held securely together.
The accompanying drawings illustrate a mode of carrying out the process.
Fig. 1. is a longitudinal section of two tubes A and B having their ends pushed
one over the other. In this case the tubes are fixed to each other by two annular
bulgings a in the tube ends after they have been pushed one over the other.

page_text: Fig. 2 is a part sectional elevation of tubes so fixed to each other in order to
illustrate how they may be united at an angle. The tube piece C is formed like a
socket with slanting branch C₁ and is at each end pushed over the tubes A and B
respectively while the branch C' is pushed over the tube D. Then the annular
bulgings a are formed from within.
Or the bulgings may in some cases not go all round.
This process which is of especial advantage for cycle frames offers the advantage
that it can be done cold so that the usual preparation for brazing or soldering and
the subsequent trimming are avoided.
Fig. 3 is a sectional view of an apparatus for carrying out the process by making
external annular bulges. It consists of a tubular cylinder M with internal screw
thread and with handle H or other means for rotating it; a spindle S with corre-
sponding screw thread and provided at one end with handle h or other means for
rotating it and having at the other end a cone part w. and a number of hard steel
balls which are arranged round the said cone part and held in holes somewhat
smaller than their diameter, said holes being in the cylinder M or in an attach-
ment D thereto. The cone w is here shown as loose on the part d of the spindle S
and kept in place by a nut m.
By rotating the spindle S by means of the handle H and by feeding it forward
in the cylinder M by means of the handle the cone to on the spindle will force
the balls outwards and form the bulge in the inner tube and in the outer tube or
socket in the desired manner.
In order to produce bulgings from without to within it is only necessary to
arrange a ring of cone section around the cylinder D, which is pushed over the
tubes to be united.
Having now particularly described and ascertained the nature of the said inven-
tion, as communicated to me by my foreign correspondents, and in what manner
the same is to be performed I declare that what I claim is :-
1. A cold process for fixing tubes on each other consisting in pushing the tube
ends one over the other to a suitable distance and then forming one or more
annular or part annular bulges in both either from within to without or from
without to within so that the tubes are held securely together.
2. The apparatus for carrying out the process firstly claimed consisting of a
hollow cylinder M with means for rotating it and provided with inner screw thread
wherein engages a screw spindle S with means for rotating it and provided with a
cone w all so arranged that by turning the spindle the cone is pushed forward and
steel balls k pressed out through holes in the cylinder M or its attachment D,
substantially as described.
Dated this 20th day of December 1895.
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.