Improvements in and relating to the Junctions of Cycle and other Frames.
Year: 1898

page_text: Date of Application, 7th Mar., 1898-Accepted, 11th June, 1898
COMPLETE SPECIFICATION.
Improvements in and relating to the Junctions of Cycle and other
Frames.
I, JOHN HAMILTON COPELAND, of 192, Cherry Wood Road, Bordesley Green,
Small Heath, Birmingham, in the County of Warwick, Model Maker, do hereby
declare the nature of my said invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement;-
My invention has for its object improvements in and relating to the junctions
of cycle and other frames which enable the junctions to be constructed without
the weakness which at the present time characterizes brazed junctions, the addition
my invention thereto gives the junction great strength and prevents it breaking
at or near the entrance to the socket which is the usual place of fracture in brazed
joints.
of
In order that my invention may be clearly understood and more easily carried
into practical effect I have appended hereunto a sheet of drawings shewing an
example of a junction made and also various methods of preparing the portion
according to my invention which adds the stiffness and strength thereto.
Figure 1 is a part elevation and part section of a branch socket or lug such as
is used in building the frames of cycles with a tube placed inside the lug and
having my invention applied thereto.
Figure 2 is an elevation shewing one mode of constructing the strengthening
or stiffening portion of my invention.
Figure 3 is an end elevation of a tube with my invention applied thereto.
Figure 4 shews another mode of making the strengthening piece K.
Figure shews a strengthening piece K made in four pieces or angle sections.
Figure 6 shews a strengthening piece made from three angular strengthening
pieces.
Figure 7 shews a strengthening placed in an oval tube or fork piece.
My strengthening piece which I have marked K upon the accompanying
drawings may be made from two pieces of metal K¹ and K2 of any desired kind
of sufficient strength by cutting a slot such as Figure 2 in each piece and then
sliding the two together. The cross stiffener is then placed inside the end of the
tube T as shewn at Figure 1 and brazed in that position and at the angles or inter-
sections also. The tubes when brazed in their sockets as shewn at Figure 1 are
generally weak at or about the joint of the arrows E, E and it will thus be seen
that my stiffeners strengthen or support the tube at this weak part. I do not
confine myself to make these stiffeners in one particular way as there are various
methods of doing this for instance from two angle pieces ³, as shewn at Figure 4,
or from three angle pieces, k, seen at Figure 6 or four angle pieces 1, 2, 12, 1
as seen at Figure 5 but in all cases these are better brazed or fastened together
when or before they are put into the tube T, and also to the tube when placed
therein. The stiffeners may be made to suit any shaped tube as for instance that
shewn at Figure 7, they are also suitable for any of the junctions of a cycle, or
other frame such as the crown head, main bracket &c.

page_text: 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:-
CLAIM.
The improvements in and relating to the junctions of cycles and other frames
of an internal strengthening piece such as K brazed or otherwise fastened into
the tube T substantially as herein set forth and shewn upon the accompanying
drawings in Figures 1 to 7 inclusive.
Dated this 5th day of March 1898.
JOHN HAMILTON COPELAND,
By George Barker,
Agent for Applicant, 77, Colmore Row, Birmingham.