Improvements in Flexible Transmission Shafts.
Year: 1896

page_text: Date of Application, 18th Apr., 1896
Complete Specification Left, 29th Dec., 1896-Accepted, 30th Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in Flexible Transmission Shafts.
I, Dr. EUGÈNE LOUIS DOYEN of 5 Rue Cotta, Reims (Marne) in the Republic
of France do hereby declare the nature of my invention to be as follows :-
My invention relates to flexible transmission shafts. According to my invention-
the shaft is formed of tubular component lengths articulated together as hereinafter
described.
The component lengths consist of tubes formed at their extremities so that, of
the two ends of adjacent lengths which are joined together one is formed with an
end having recesses (say three) which engage with a similar number of claws
carried by the opposed end of the next length, the outer and inner surfaces of
these claws being curved spherically and corresponding to spherically curved
surfaces at the end of the opposed length.
The ends are engaged together so as to cause the claws of the one to engage.
with the recesses in the other, and they are secured in position by fixing or
forming in the end having the recesses an internal tubular piece formed at its
inner end with spherically curved parts having the same diameter as the interior
of the tubular length in which it is fitted, these spherical curved parts bearing
against the corresponding internal surfaces of the claws on the other length so
that whilst the lengths can be moved angularly in any direction they are laterally
secured together and held in position relatively to each other for transmission of
the driving power.
The component parts can be introduced into or covered by a woven sheath, or
other suitable envelope.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.
I, Dr. EUGÈNE LOUIS DOYEN of 5 Rue Cotta, Reims (Marne) in the Republic
of France, 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 flexible transmission shafts. According to my invention
the shaft is formed of tubular component lengths articulated together as hereinafter
described with reference to the accompanying drawings.
Figures 1 and 2 shew in longitudinal section portions of two adjacent lengths.
of shafting with the ends joined together according to this invention. Figure 1
shewing the lengths in line and Figure 2 shewing them angled relatively to each

page_text: Figures 3 and 4 shew in end views each of the two ends of the lengths so
connected.
The component lengths each consist of tubes 1 formed at their extremities so
that of the two ends of adjacent lengths which are joined together the one A is
formed with an end having recesses A¹ (say three) which engage with a similar
number of claws B carried by the opposed end of the next length the outer and
inner surfaces of these claws being curved spherically and corresponding exteriorily
to the spherically curved surfaces A1 at the end of the opposed length.
The ends are engaged together so as to cause the claws of the one to engage
with the recesses in the other and they are secured in position by fixing or
forming in the end A an internal tubular piece 6 formed at its inner end with
spherically curved parts corresponding to the interiors of the claws and being
struck from a radius the same as that of the interior of the tubular length in
which it is fitted. The said piece 6 is shewn as being secured by screws as at 3
but it may be secured in any other way. These spherical curved parts bear
against the corresponding internal surfaces of the claws on the other length so
that whilst the lengths 1 can be moved angularly in any direction they are
laterally secured together and held in position relatively to each other for
transmission of the driving power.
The component parts can be introduced into or covered by a woven sheath or
other suitable envelope.
Having now particularly described the nature of this invention and in what
manner the same is to be performed I declare that what I claim is :-
A flexible shaft composed of tubular lengths with ends, provided with reversely-
disposed spherical surfaces engaging together there being claws such as B on the
one end engaging with a piece such as 6 in the other end substantially as
herein before described and illustrated.
Dated this 29th day of December 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.