An Improved Method of and Means for Jointing Metallic Socket Pipes, Tubing, and the like.
Year: 1896

page_text: Date of Application, 12th Nov., 1896-Accepted, 16th Jan., 1897
COMPLETE SPECIFICATION.
An Improved Method of and Means for Jointing Metallic Socket
Pipes, Tubing, and the like.
"I, REINHOLD FELSCHE of 3 Victoria Strasse, Magdeburg in the Empire of
Germany, Engineer, 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:-
My invention relates to an improved method of and means for joining metallic
socket pipes or tubing, particularly adapted for use in securing together, the joints
in the frames of velocipedes, and has for its object to effect the junction of such
pipes or tubes more quickly, soundly and reliably and at less cost, than has been
possible hitherto by the well-known process of brazing or soldering.
My invention consists in forming any number of abrasions or undulations or
both, in a suitable portion of the outer surface of the smaller end of a metallic
socket pipe, or in a suitable portion of the end of a tube to he inserted within the
end of a larger tube, or the socket of a like pipe, and in forming upon the inner
surface of the socket end of such a pipe, or the enclosing end or sleeve of the said
larger tube au annular recess cr groove of such a width, as to embrace the whole
of the said abrasions or undulations so that a certain space exists, between the one
and the other, which said space I fill in with any suitable molten metal, a hole or
boles being provided in the said socket or sleeve for the insertion of same, and by
this means I permanently and inseparably connect the larger diameter with the
smaller, more quickly, and without the need of skilled labour as obtains with
brazing or soldering.
In the accompanying drawing Fig. 1 is a view of such a joint according to my
invention, in which the outer or larger tube or socket is shewn in longitudinal
section, while Fig. 2 is an end view of the same with the inner or smaller tube or
pipe in cross section.
In the smaller tube, or the smaller end of a socket pipe A, I form any number
of undulations or recesses or abrasions or bumps B preferably undulations or
recesses as shewn, which may extend any distance along A, according to the
desired overlap of the joint, and corresponding to the area over which is spread
the portions B, I form upon the inner surface of the end of the larger tube, or the
socket C of the next length of pipe to which A is to be connected, an annular
space or groove D, the outer end of which terminates a suitable distance from the
end of C so as to form a ridge or flange E closely fitting the pipe or tube A. In
any convenient part of C, communicating with the groove D, I provide one or
more holes G (preferably two), and when A and C are in position one within the
other as at Fig. 1 I pour into either of the said holes G any suitable metal in a
molten condition, which by filling up the space D, and occupying the concavities
or recesses B, makes when cold a perfectly solid joint between A and C, the
second hole or holes G being for the escape of air.
When the portions B of A are abrasions or bumps, the ridge or flange E upon C
may be dispensed with, in order that the groove D may pass over the said
abrasions or bumps, in which case the space left by the absence of E may be filled
in with clay or the like, previous to the insertion of the molten metal which may be
removed when the latter is cold.

page_text: I may find it convenient in certain cases, such for instance as in the manufacture
of cycle frames, to tin the outer surface of A and the portions B, and the inner
surface of the groove D, before placing A and C together in order that the molten
metal may adhere thereto with greater tenacity.
I may in lieu of the recesses or undulations abrasions, or bumps B form
annular or other grooves ridges or rings or. part rings upon A, as an equivalent
therefor.
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 :-
1st. The herein described method of and means for joining together, metallic
socket pipes or tubes substantially as set forth and shewn.
2nd. In an improved method of and means for joining metallic pipes or tubes,
the combination of recesses, or undulations, or abrasions, or bumps, or ridges, or
rings, or part rings, such as B, formed in or upon the outer surface of the
smaller A and a groove or annular recess such as D upon the inner surface of the
larger C with or without a ridge or flange E, and means such as holes G in C for
filling in with molten metal the space formed by D substantially as described and
shewn.
1
GEO. THOS. HYDE,
1 Broad Street Buildings, Liverpool Street, London, E.C.,.
Agent for Applicant.