provements in the Rims of Wheels of Velocipedes and other Vehicles.
Year: 1893

page_text: COMPLETE SPECIFICATION
Improvements in the Rims of Wheels of Velocipedes and other
Vehicles.
We, WILLIAM LUGTON of 144, Old Street London, and EDWIN CHARLES
FURBY of 20, Red Lion Street Clerkenwell, London, Engineers do hereby
leclare 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 improvements in the rims of wheels of velocipedes
and other vehicles and consists in forming the said rims in two parts in such a
manner that one part may be detached or removed from the other or main part
for the purpose of repairing or removing the inner pneumatic tube. The afore-
said parts are fastened together by means of small bolts or studs and nuts and
the outer ring or tube forming the tyre is secured to the two parts in such
a manner that as one of the parts of the rim is detached from the other it
draws with it one end of the outer ring or tube thus disclosing the inner tyre
and permitting of its removal.
And in order that our said invention may be more fully understood we will
now proceed to describe the same with reference to the accompanying sheet of
drawings in which like letters of reference indicate corresponding parts throughout.
Fig. 1 represents a cross section of a wheel rim and tyre according to our
invention as applied to a velocipede with the parts fixed in position ready
for use.
Fig. 2 is a similar section showing the two parts of the rim detached for the
purpose of disclosing or withdrawing the inner pneumatic tube.
Fig. 3 is a side elevation of a portion of the rim and tyre and
Fig. 4 is a plan of the inner surface of the said rim.
To the
a represents the fixed or main portion of the rin, to which the spokes of the
wheel are attached, and which is formed of a trough section as clearly shown,
One
and b is the detachable or removeable part or portion of the said rim.
doubled over so as to form a spring catch a'
side of the part a of the rim
for the purpose of receiving and securing the detachable part of the rim.
fis the outer covering or tyre the two ends of which are cemented to the rim, one
to the part a and the other to the part b, as shown in Figures 1 and 2.
part 6 of the rim are riveted or otherwise secured several small screw bolts or studs d
for the purpose of securing the parts a and b together, the inner surface of the
spring catch a being cut away or notched at g g (Fig. 4) for the purpose of receiving
5 the aforesaid bolts or studs and permitting the two parts a and b being locked
together or detached from one another without removing the said bolts or studs the
two parts a and b are tightly secured to one another by means of the nuts d' screwed
on the ends of the bolts or studs, and one side of the part a¹ is curved as at c to
prevent the two parts a and b of the rim being separated until the nuts d'are
0 unscrewed sufficiently to clear the projecting or curved portion c of the rim.
By means of our invention the inner or air tube e may be got at in a very small
space of time (about half a minute) it being necessary merely to unscrew the nuts d¹
so as to clear the curved portion c when the part b may be withdrawn from the
spring catch portion a'. By this arrangement of rim it is also impossible for the
5 tyre to creep and it is perfectly water tight.

page_text: Having now fully described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we
claim is :-
The improved rim for the wheels of velocipedes and other vehicles consisting of a
fixed or main part a and a detachable part b, the spring catch or portion a¹ and the
bolts or studs d and nuts d' substantially as described and for the purposes set
forth.
F. G. CASSELL,
Of Cassell & Co.,
22, Glasshouse Street, Regent Street, London, Agent for the Applicant.