Improvements in or relating to Couplings for Transmitting Rotary Motion.
Year: 1894

page_text: Date of Application. 11th Oct., 1894
Complete Specification Left, 22nd May, 1895-Accepted, 29th June, 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to Couplings for Transmitting Rotary
Motion.
I, KARL REYSCHER, of Bielefeld, in the Empire of Germany, Engineer, do
hereby declare the nature of this invention to be as follows:-
This spring-coupling differs from the brush and spring-couplings hitherto invented
inasmuch as the springs which havo to transmit the power are not placed on the
front side of the coupling-disc, but upon the periphery thereof. The position of
the working surfaces of such springs, contrary to that of springs or brush-couplings
previously used, is not radial but parallel with the axis of the coupling-disc. In
the previous arrangement, the blade-springs are exposed to torsion and must
therefore be cut comb-like or formed of wire tufts or clusters.
In the present invention this defect is obvinted. In order to enable the working
edges to engage with the whole surface, iu disengaging couplings, they are 'con-
structed with oblique working surfaces, parallel to the teeth or springs of the other
engaging disc. This obliquity, however, is only slight, as it need only correspond
in amount to the play of the springs.
A fixed half coupling is provided with a sort of angular or oblique-faced
peripheral rim, internally toothed. The teeth are coned towards the centre of the
disc. The loose half-coupling bas screwed on to it an angular ring with radial
notches or slits, wherein are pushed hook-shaped bent springs of L shape, which
are secured against slipping or displacement by a ring and formed oblique towards
the circumference so as to correspond with the obliquity of the teeth inside the rim
of the fixed half-coupling. The coupling is operated by the thrusting of the loose
disc against the fixed disc.
Instead of the springs being hook-shaped, they may be formed and arranged, in
the shape of U or u.
Vice-versa, the spring disc may be constituted the fixed half-coupling while the
toothed disc becomes the loose half-coupling.
Furthermore, the one half-coupling may, contrariwise, consist of a toothed wheel,
having its teeth directed outwards, the other half-coupling consisting of a ring with
springs attached to it which are directed inwards.
Dated this 11th day of October 1894.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Couplings for Transmitting Rotary
Motion.
I, KARL REYSCHER, of Bielefeld, 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:-
This spring-coupling differs from the brush and spring-couplings hitherto invented

page_text: inasmuch as the springs which have to transmit the power are not placed on the
front-side of the coupling disc, but upon the periphery thereof. The position of
the working surfaces of such springs, contrary to that of spring or brush-couplings
previously used, is not radial but parallel with the axis of the coupling-disc. In
previous arrangements, the blade-springs are exposed to torsion and must therefore
be cut comb-like or formed of wire tufts or clusters.
In the present invention this defect is obviated. In order to enable the working
edges to engage with the whole surface, in disengaging couplings, they are con-
structed with oblique working surfaces, parallel to the teeth or springs of the other
engaging disc. This obliquity, however, is only slight, as it need only correspond
in amount to the play of the springs.
In the accompanying drawings,
Figs. 1 and 2 are views at right angles to each other of a coupling constructed
according to this invention, Fig. 1. being half in section and half in elevation, and
Fig. 2 being a section on the line A B C of Fig. 1.
Fig. 3 is a portion of a section, such as forms part of Fig. 1; it will be
hereinafter particularly referred to.
u is the fixed half-coupling, provided with a sort of angular or oblique-faced
peripheral rim k, internally toothed. The teeth are, coned towards the centre of
the disc. The sliding half-coupling bhas screwed on to it an angular ring with
radial notches or slits, wherein are pushed. bent springs of shape, which are
secured against slipping or displacement by a ring e and formed oblique towards the
circumference so as to correspond with the obliquity of the teeth inside the rim of
the-half-coupling a. The drawing shows the coupling in the position of engagement.
The coupling is operated by the thrusting of the disc b against the disc.e.
Instead of the springs being book-shaped, they may be formed and arranged in
the shape of U or L, as shown in Fig. 3.
Vice. versa, the spring disc bmay be constituted the fixed half-coupling while, the
toothed disc a becomes the sliding half-coupling.
Furthermore, the one half-coupling may,, contrariwise, consist of a toothed wheel,
having its teeth directed outwards, the other half-coupling consisting of a ring
with springs attached to it which are directed. inwards.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is ;-
1. A disengaging spring-coupling with radially arranged blade-springs
characterised by the spring-ends being adapted to bear against a coned surface
and by a corresponding obliquity of the teeth which engage with them in the
direction of the common axis so that disengagement and engagement of the
coupling is effected by an axial displacement of one of its halves or parts from or to
the other substantially as described.
2. The spring coupling substantially as and for the purpose described and
illustrated in Figures 1 and 2 or in Figure 3 of the accompanying drawings.
Dated this 22nd day of May 1895
W. P. THOMPSON & BOULT,
Agents for the Applicant.