Improvements in and connected with Joints for Tubing..
Year: 1899

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-Date of Application, 25th Sept., 1899
Complete Specification Left, 25th June, 1900-Accepted, 11th Aug., 1900,
PROVISIONAL SPECIFICATION.
Improvements in and connected with Joints for Tubing..
I, PHILIP LOUIS RENOUF, Holland House, Holland Street, Hyson Green, Not-
tingham, Engineer, do hereby declare the nature of this invention to be as
follows:
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By"my invention which is particularly applicable to velocipedes or motor
vehicle or similar framing which has to be brazed, the usual processes of pattern
making moulding or die sinking for forming joint pieces may be quite dispensed
with. I make joint lugs out or sheet metal; one part of these lugs is inserted
in one of the tubes and is generally made to break out through slots or gaps
provided in the side of this tube, while another part forms a loop surrounding
the tube to be joined up. In most cases therefore one part of the lug stepped
down to fit one tube; the hole may be pressed or punched out where the joint is
rectangular but where it is not it should be machined out by a hollow mill or
trepanning tool such as described in the Letters Patent No. 10929/1897.
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In some cases the hole for the reception of a second tube can be trepanned
after this fashion together with the tube containing the shank of the lug, an
absolute fit of all the parts being thus ensured. The shank itself can be
machined to a perfect fit by the use of a hollow milling tool. The lug can be
a double, treble or multiple one by the use of several pieces or by folding one;
it can simultaneously form a clip, as for instance where it forms a seat lug on
a velocipede. One lug may be used to unite more than two tubes, as for instance
where the bottom bracket of a cycle is formed out of tubing.
Dated this 23rd day of Santambor 1200
COMPLETE SPECIFICATION.
Improvements in and connected with Joints for Tubing.
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I, PHILIP LOUIS RENOUF, late of Holland House, Holland Street, Hyson Green,
Nottingham, but now of Chester Road, Erdington, in the Co. of Warwick,
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 joining tubes, such as are used particularly in the
framing of velocipedes or motor-propelled vehicles. For this purpose I use as
jointpieces stout strips of sheet metal pierced at one part to fit tightly around
one of the tubes to be joined and provided with one or more shanks fitting tightly
inside the other tube or tubes to be joined to the former one.

page_text: The shank is brazed in its position whereas the encircling part may sometimes
be left loose for the purpose of detachment, or may form a clip.
Referring to the drawings Figs. 1, 2 and 3 shew a T-piece, Fig. 3 giving the
section along a b on Fig. 1. A is the sheet metal joint piece with the shank
fitting tightly into tube B part of which is slotted as shewn so as to allow the
wider part of A to pass out and encircle tube C.
Fig. 4 shews the joint piece A doubled so as to give greater strength; it is
evident that a series of similar joint pieces can be used in connection with large
tubes. Where the angle of the tubes is, as in Fig. 4, other than a right angle
the hole or holes in the joint should be cut suitably and for this purpose I recom-
mend the use of a hollow end mill or trepanning tool as it will not run out of
the angle to which it is set.
Fig. 6 of which Fig. 5 gives an end view shews the joint piece A doubled over
so as to form a loop outside the joint for receiving a pinchbolt and thus form a
clip; the tube C may thus be held detachably or it may be brazed up together
with tube B and form the receptacle for another tube or rod to be clipped inside
it by the jaws formed out of the loop of A. In Figs. 7 and 8 a tubular cross-
piece is shewn in which the jointpiece A has two shanks fitting into the tubes B
and B and its centre encircles the tube C. A similar construction is shewn in
Fig. 9 where the tubes B, B are not opposite to one another.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
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1. A jointpiece A. Figs. 1 to 9 for the purpose of joining tubes in the frame-
work of velocipedes or similar construction by encircling one tube and fitting
into one or more tubes in the manner particularly described.
2. The multiple jointpiece or pieces A Fig. 4 as described.
3. A joint piece A Figs. 5 and 6 with a shank to fit one or more tubes securely
and fixedly, a hole for the purpose of embracing another tube and clipping jaws
formed as described.
4. The jointpiece A having a hole for the purpose of encircling one tube and
two or more shanks to fit into other tubes for the purpose and in the manner
described, as in Figs. 7, and 9.
Doted this 23rd day of June 1900