Year: 1886

page_text: I GEORGE DIXON of Tanners House Ramsbottom in the County of Lancashire
Mechanical Engineer do hereby declare the nature of this invention to be as follows:-
The teeth of one or more wheels gearing together are proportioned so as to possess a
certain amount of elasticity. By this means slight imperfections in pitch will be
corrected & the strength of all the teeth in gear at one time will be brought fully into
play. The danger of breakage from shocks will be reduced & consequently the speed
at which the wheels can run will be much increased as compared with that of ordinary
wheels. The teeth are made of steel & may be cast in one piece with the rim or made
separate. In the drawing accompanying this specification the elastic toothed wheels
are shown gearing into non elastic ones. It will be seen that the proportions of the
loose teeth are such that sufficient strength is left in the rim between them to enable
them to be well secured.
The proportions of the non elastic teeth are such as to render them practically
unbreakable which will be a great advantage in wheels of large size & cost.
Figs. 1, 2, 3 & 4 of the drawing show how the elastic teeth may be secured when
made separate from the rim.
Figs. 5 & 6 show the elastic teeth proportioned to work in existing wheels. Some
of the teeth in Fig. 5 are shown split so that the elasticity may extend throughout
their length.
When the teeth are cast in one piece with the rim both wheels gearing together
may have elastic teeth.
Dated this 0th day of December 1886

page_text: Improvements in Toothed Wheels.
I GEORGE DIXON Mechanical Engineer of 27 Park Hill Place Chorley Old Road
Bolton formerly of Tanners House Ramsbottom Lancashire 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 :-
The teeth of one or more wheels gearing together are proportioned so as to possess
a certain amount of elasticity. By this means slight imperfections of pitch will be
corrected & the strength of all the teeth in gear at one time be brought fully into
play. The danger of breakage from shocks will be reduced & consequently the speed
at which the wheels can be run will be much increased as compared with ordinary
wheels. The elastic teeth are made of steel & may be cut in one piece with the rim
or made separate.
In the drawing left with the provisional specification the elastic toothed wheels are
shown gearing into non elastic ones. It will be seen that the proportions of the elastic
teeth are such that when made separate from the rims sufficient strength remains in
the latter between the teeth, for securing them, as shown on the drawing.
The pro-
portions of the non elastic teeth are such as to render them practically unbreakable &
they may therefore be made of cast iron. Figs. 1, 2, 3 & 4 of the drawings shows how
the elastic teeth may be secured when made separate from the rim. Figs. 5 & 6 show
the elastic teeth proportioned to work in existing wheels. Some of the teeth in fig. 5
are shown split so that the elasticity may extend throughout their length.
When the elastic teeth are cast in one piece with the rims both wheels gearing
together may have elastic teeth, the elasticity being obtained by lengthening the
teeth only, the thickness of teeth in both wheels being similar. The teeth would only
be allowed to gear the ordinary depth proportioned to the pitch of the teeth, so as to
leave the elasticity of the teeth free to act."
Having now particularly described & ascertained the nature of my said invention
& in what manner the same is to be performed, I declare that what I claim is,
The proportioning of the teeth of wheels to possess elasticity substantially as described
in this specification & shown upon the drawing left with the provisional specification,
or any mere modification of the same.
Dated thin 8th day of Cantamilan 1987