Improvements in Apparatus for Transmitting Rotary Motion.
Year: 1896

page_text: Date of Application, 16th May, 1896
Complete Specification Left, 26th Nov., 1896-Accepted, 2nd Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Transmitting Rotary Motion.
I EDWARD KENWORTHY DUTTON of Arden, Cornwall Road, Harrogate, in
the County of York, Gentleman do hereby declare the nature of this invention to
be as follows:-
My invention relates to frictional rotary motion transmitting apparatus.
Previously to my invention a friction wheel and disc have been used for the
purpose but have had the disadvantage of being limited in transmitting capability
owing to the fact that broad contact surfaces could not be obtained. I use a
revolving disc in connection with two or more friction wheels which are mounted
on a common axis and are connected by means of balance gear, as for example by
means of three bevel wheels.
When using three friction wheels the middle wheel carries the intermediate
bevel. By preference the wheels are mounted to revolve close to one another and
at equal distances apart. The outer wheels revolve one faster and the other
slower than the inner wheel which latter revolves at a speed which is the mean of
the speeds of the outer wheels. The part carrying the centre wheel or the inter-
mediate bevel without a central friction wheel is fixed to the driver or driven
shaft. More than three wheels could be combined but not without complexity of
gearing.
For most or all purposes the friction wheels would be mounted to be traversed
toward and from the centre of the disc. For some purposes-as for example for
actuating vehicles-I propose to use two discs and two sets of friction wheels and
to arrange for the wheels in one set to be moved nearer to the centre of the disc
when the other set would be moved away from the centre of the other disc so as
to produce a differential motion. By a second independent adjustment both sets
would be moved nearer to or further from the said centres to vary the power
and-if required-across the centres to reverse the direction of motion. Levers
for effecting one adjustment might be carried by adjustable slides or by other
levers whereby the other adjustment would be effected.
By bringing the wheels opposite to the centre of the disc the motion of the
driven shaft would be arrested the wheels continuing to revolve.
When using three friction wheels a depression to clear the centre wheel may be
provided at the centre of the disc.
Dated the Fifteenth day of May 1896.
Improvements in Apparatus for Transmitting Rotary Motion.
I EDWARD KENWORTHY DUTTON of Arden Cornwall Road Harrogate in the
County of York Gentleman do hereby declare the nature of my said 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 frictional rotary motion transmitting apparatus.
Previously to my invention a friction wheel and disc have been used for the

page_text: purpose but have had the disadvantage of being limited in transmitting capability.
I use a revolving disc in connection with two or more friction wheels which are
mounted on a common axis and are connected by means of balance gear-as for
example by means of bevel gearing.
In the accompanying drawings which are illustrative of my invention :-
Fig. 1 represents two friction wheels connecter in accordance with my invention.
Fig. 2 represents three friction wheels similarly connected.
Fig. 3 represents a combination of four friction wheels.
It is
In Fig. 1A A' are two friction wheels which are mounted to revolve loosely
upon a shaft B and are provided with rims or tyres of leather or other suitable
material. Each wheel is provided with or secured to a bevel wheel C and the
two bevel wheels gear with an intermediate bevel whee! D which is mounted to
revolve upon a stud carried by a block or part E which is fast to the shaft. It
will be seen that if the two wheels A A' revolve at the same speed the shaft will
also revolve at the same speed but that if one wheel revolves faster than the
other which would be the case-the shaft will revolve at a speed which is the
mean of the two speeds of the wheels: as for example-if one wheel revolves
at 400 and the other at 360 the shaft will make 380 revolutions per minute.
thus possible for the two wheels to be driven by one disc or to drive one disc as
the case may be. In Fig. 2 the connection of the two wheels is the same but a
third wheel A' is introduced such wheel forming part of or being attached to the
block E. In Fig. 3 two sets of friction wheels are connected by balance gear so
as to act in concert in the same manner as the two wheels in Fig. 1. In this
-example the block E in each set is not secured to the central shaft B but is
connected by means of a sleeve F-which extends through the wheel A'-with a
bevel wheel G the connected parts revolving loosely upon the shaft. The two
bevel wheels are connected by an intermediate bevel wheel H which is mounted
upon a stud carried by a block E¹ which is fixed or formed upon the shaft. The
four friction wheels can thus act in concert upon one disc or be acted upon by one
disc. If both sets were in contact with the disc on the same side of its axis-
that is to say on the same radial line-the shaft would revolve at a speed which
would be the mean of the speeds of the two parts E E-or otherwise stated-at
the average speed of the four friction wheels. Two sets each comprising three
friction wheels may be similarly combined so as to obtain six frictional contacts
with the disc. It is not necessary in all cases that the two sets of friction wheels
or the two wheels in Fig. 1 if more widely separated shall be on the same side of
the disc axis as one set or wheel may be on one side and the other on the other
side. In such a case-when both sets or wheels would be equi-distant from the
disc centre no motion would be communicated to the shaft-supposing the disc to
be driving but if the shaft were to be moved endwise on a line crossing the
centre of the disc the shaft would be revolved the speed increasing in proportion
to the movement of the shaft. An advantage of such an arrangement is that a
very slow speed can be obtained without having to bring the friction wheel too
near to the centre of the disc. It will be obvious that more than one intermediate
bevel wheel may be used to connect a pair of bevel wheels in any case. I do not
confine myself to the use of bevel wheels for the purpose so long as a corresponding
effect is obtained. Ball bearings may be considered desirable but I have not
thought it necessary to show them in the drawings.
The improved motions may be used in the actuation of self-propelling vehicles
er for other purposes for which a variable speed is required.
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 :
1. The combination of parts substantially as and for the purpose set forth and
indicated.
2. In dise and friction wheel gearing: two friction wheels connected by balance

page_text: gearing the intermediate gear being carried by a part attached to the shaft
carrying the combination substantially as set forth and indicated.
3. In disc and friction wheel gearing two three or more friction wheels
connected by bevel or balance gearing so that each wheel whilst transmitting
motion and power between the disc and the shaft upon which the wheels are mounted
can revolve at a speed due to the position of such wheel with relation to the axis
of the disc substantially as set forth and indicated.
Dated this 21st day of November 1896.
EDWARD K. DUTTON.