Improvements in and relating to Velocipedes.
Year: 1895

page_text: Date of Application; 11th Nov., 1895
Complete Specification Left, 8th Aug.,. 1896-Accepted, 19th Sept., 1896'
Improvements in and relating to Velocipedes.
1, WILLIAM MORTEN APPLETON, of The Boulevard, Weston-super-Mare, in-
the County of Gloucestershire, Cycle Manufacturer, do hereby declare the nature
of this invention to be as follows:-
This invention relates to an improved device for adjusting the position of the
axle of the driving wheel or wheels of cycles with respect to the frame carrying it
for the purpose of adjusting or varying the tension of the driving chain, and it
consists essentially of a split socket on the rear end of each member of the frame,
the said socket. being provided with ears and a transverse screw for the purpose of
contracting its interual diameter. In the said sockets are sliding stems adapted
between them the said stems being adapted to carry the axle, the sockets being
slotted to allow of the movement of the axle with respect to them.
The ends of the stems are threaded with left handed threads and the ends of the
split socket are threaded with right handed threade, or the threads on the
respective parts may be reversed. On to the ends of both the stems carrying
the axle and on the ends of the split sockets are screwed nuts having right and left
handed threads so that they engage with the threads both on the stems and' on
the split sockets, so that by rotating the said nuts the axle is moved backwards
or forwards with respect to the frame according to the direction in which the nuts
are turned.
If desired lock nuts.may be used in conjunction with the adjusting nuts though
this is not obligatory.
It will be understood that each end of the frame is fitted with a similar
1, WILLIAM MORTEN APPLETON of The Boulevard, Weston-super-Mare, in
the County of Gloucestershire, Cycle Manufacturer, 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 invention relates to an improved device for adjusting the position of the
axle of the driving wheel or wheels of cycles with respect to the frame carrying it
for the purpose of adjusting or varying the tension of the driving chain.
In the accompanying drawing which illustrates this invention:-
Figure is a view in side elevation of a chain adjusting device showing the axle
at one end of its travel.
TRO
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page_text: Figure 3 is a view in side elevation showing the axle at the other end of its
travel.
Figure 4 is a sectional view in side elevation of the adjusting nut.
Figure 5 is a view in side clevation of the stem for carrying the axle, and
Figure 6 is a view in side elevation of the socket.
Throughout the views similar parts are marked with like letters of reference.
The rear ends of the lower members X of the main frame terminate in sockets A
which have slots a cut or formed on their inner sides. In the said sockets are
sliding stems B adapted to carry the axle Y which is fixed to the said stems
in any convenient manner.
The ends of the stems B are threaded with left-handed threads and the ends of
the split sockets A are threaded with right-handed threads, or the threads on the
respective parts may be reversed. On to the ends both of the stems A and split
sockets B are screwed compound nuts C the threaded internal parts c and c¹ of
which engage with the threaded parts of the stems A and the sockets B respec-
tively. By rotating these nuts the axle Y is moved backwards or forwards with
respect to the frame according to the direction in which the nuts are turned.
If desired lock nuts may be used in conjunction with the compound nuts, but
this is not obligatory.
As a modification the sockets A may be split and provided with ears a¹ and
transverse bolts or screws as to enable the sockets to be contracted to grip the stems,
as shown in dotted lines in Figures 1 and 2.
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) An improved device for adjusting the tension of the driving chains of cycles,
constructed and arranged substantially as hereinbefore described and as shown by
the accompanying drawing.
(2) A chain adjusting device consisting of a socket such as A having a slot such
as a on its inner side, of a sliding stem such as B adapted to carry the axle of the
wheel or wheels, and of a compound nut such as C adapted to screw on to both the
stem B and the socket A, substantially as and for the purpose set forth.
(3) A chain adjusting device consisting of a socket such as A having a slot such
as a on its inner side, and being split longitudinally and provided with lugs or ears
such as a¹ and a transverse screw such as a², of a sliding stem such as adapted
to carry the axle of the wheel or wheels, and, of a compound nut such as C adapted
to screw on to both the stem B and the socket A, substantially as and for the
purpose set forth.
Dated this 6th day of August 1896.