Improvements in or connected with Chain Adjusting Devices for Velocipedes.
Year: 1897

page_text: Improvements in or connected with Chain Adjusting Devices
for Velocipedes.
We, GEORGE HENRY DOLLERY and EDGAR HOLMES DALLIMORE, both of 39,
Victoria Street, London, S.W., Gentlemen, do hereby declare the nature of this
invention to be as follows:-
Our invention relates to improvements in or connected with velocipedes, the
object being, by an improved arrangement and construction of the ends of
the back fork and back stay or compression tubes, and a novel arrangement of
the back wheel, to enable the chain to be easily adjusted without loosening the
nuts securing the back wheel in position, while the said back wheel can be
easily and quickly removed from the frame when required.
In carrying our invention into practical effect, instead of securing the ends
of the back fork and back stay or compression tubes by brazing or in any other
manner such as now employed for forming a permanent connection between them,
the lower ends of the back fork tubes are each furnished with a horizontal
tubular portion or sleeve furnished upon the underside with a small downwardly
projecting forked portion or lug, while the ends of the back stay or compression
tubes are formed with cylindrical parts designed to enter and pass through the
aforesaid tubular portions or sleeves formed at the ends of the back fork tubes.
The back wheel is carried by the forked parts or lugs of the tubular portions,
where it is secured in position by means of nuts in the usual manner, while in
order to effect an adjustment of the chain, the cylindrical end of each back stay
or compression tube may be screw threaded and provided with nuts coming against
each end of the sliding sleeve of each back fork tube, in such a manner that by
suitably operating same, the ends of the back fork tubes may be drawn or forced
back carrying with them the rear wheel of the machine, or other suitable means
may be employed for drawing back the ends of the back fork, and thus effect an
adjustment of the chain. without loosening any of the nuts or parts of the back
wheel and its connections.
1007

page_text: Improvements in or connected with Chain Adjusting Devices
for Velocipedes.
We, GEORGE HENRY DOLLERY and EDGAR HOLMES DALLIMORE, both of 39,
Victoria Street, London, S.W., Gentlemen, 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:-
Our invention relates to improvements in or connected with velocipedes, the
object being by an improved arrangement and construction of the ends of the
back fork and the back stay or compression tubes, and also a novel arrangement
of the back wheel, to enable the chain to be easily adjusted without loosening
the nuts securing the back wheel in position, while the said back wheel can be
quickly and easily removed from the frame when required.
In order that our invention may be fully understood, we will now proceed to
describe same with reference to the accompanying drawings in which Fig. 1 is
a side elevation of the ends of the back fork and back stay or compression tubes
illustrating the novel arrangement of the paris constituting this invention,, and
with the back wheel in position; and Fig. 2 is a similar view of the reverse side
of the machine with the back wheel detached.
In carrying our invention into practical effect, instead of securing the end of
the back fork and the back stay or compression tubes by brazing or by any
other method such as now employed for forming a permanent connection between
them, the lower ends of the back fork tubes are each furnished with a tubular
portion or sleeve e brazed on to or suitably secured to the said tube a, and fur-
nished upon its under side with a downwardly projecting forked portion or lug d,
while the ends of the back stay or compression tubes bare each formed or
furnished with a round projecting pin or arm f designed to enter and pass
through the aforesaid tubular portion or sleeve c.
The back wheel w is carried by the forked portions or lugs d projecting from
the tubular sleeves where it is secured in position by means of nuts g in the
usual manner, while in order to effect an adjustment of the chain, the round pin
or arm at the extremity of each back stay or compression tube is screw
threaded and provided with suitable nuts such as h coming against each end of
the sliding sleeves e in such a manner that by loosening the said nuts h the back
forks may be slid along the round pins or arms f, the sliding sleeves e carried by
the extremities of these said tubes a passing over same, and carrying with them
the back wheel w, while the said tubes a, through the sliding sleeve c, are locked
in any required position by means of the nuts h.
In order to remove or release the back wheel w from the frame of the machine,
it is only necessary to release the nuts g when the said back wheel can be removed
with the greatest case from the forked portions or lugs d.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. The improvements in or connected with velocipedes, comprising the arrange-
ment of a tubular hollow sleeve e at the end of each back fork tube a furnished with
a downwardly projecting forked portion or lug in combination with a screw
threaded pin or arm f at the end of each back stay or compression tube b de-
signed to pass through the said sleeve c, and locking nuts or fastening devices

page_text: Buch as h, the whole combined and arranged substantially as described and shown
and for the purposes specified.
2. In chain adjusting devices for velocipedes the combination of a hollow or
tubular sleeve such as c with a piu or arm such as f designed to pass through
same, and locking nuts or fastening devices such as h, substantially as described
and shown with reference to the accompanying drawings.
Dated this 17th day of Amust 1898
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicants.