Improvements in Auxiliary Tyres.
Year: 1896

page_text: Date of Application, 18th Feb., 1896
Complete Specification Left. 22nd July, 1896-Accepted, 26th Sept., 1896
Improvements in Auxiliary Tyres.
I, ZEBULON FOSTER of 335, La Salle Avenue, Chicago, in the County of Cook
and State of Illinois, United States of America, Civil Engineer, do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to provide a protector for pneumatic and other
tyres so that they will be prevented from puncture and other injury.
According to this invention the tyre is provided with a protective rim which
may either be formed of two sections or of an integral piece of material. The
contiguous ends of the rim are each formed with enlargements and the one end is
formed with a slightly reduced portion which is adapted to fit into the other end.
Each of the ends is also formed with two upwardly extending ears which have
inwardly projecting overhanging portions so that when the ends are received one
within the other the ears will be opposite each other and allow of the rim being
tightened by moving the ends apart which is effected by means of threaded bolts
provided with heads by which they are operated, the threads of the bolts being
oppositely disposed on each side of the heads. The ends of the bolts are received
in compound nuts each of which comprises three sections, the outer section being
directly contiguous to a central section which is formed of rubber or other
resilient material and which has an inner section of metal bearing against its inner
side, the three sections of the nuts being joined by means of dowel pins which
prevent their independent rotary movement but render them capable of slight
longitudinal movement under the influence of the expansive sections. Each of
the outer sections is provided with a groove in its end adapted to receive the inner
edges of the ears before mentioned, the overhanging portions lying in the upper
borizontal arms of the grooves. In this manner by operating the screw bolts the
nuts at each end thereof may be drawn towards and from the middle of the shafts
so as to force the ears apart and thus contract the rim and cause it to bind on the
tyre. Two screw bolts may be employed for holding the ends of the tyre but by
elongating the compound nuts on said bolts transversely so as to extend from one
ear to the ether only one screw bolt would be necessary, in which case the end
sections of the nuts would be grooved to receive the ears.
Dated this 18th day of February 1896.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
Improvements in Auxiliary Tyres.
ZEBULON FOSTER, of 335 La Salle Avenue, Chicago, in the County of Cook
and State of Illinois, United States of America, Civil Engineer 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 object of this invention is to provide a protector for pneumatic and other

page_text: tyres, so that they will be prevented from puncture and other injury. To this
end the invention consists in certain peculiar features of construction and
combination of parts as will be fully described hereinafter and finally embodied
in the claims.
Reference is to be had to the accompanying drawings forming a part of this
specification, in which similar characters of reference indicate corresponding parts
in all the figures.
Figure 1 is a side elevation of a wheel provided with my improvements;
Figure 2 is an enlarged side elevation of the improvement;
Figure 3 is a plan view of the same and on an enlarged scale;
Figure 4 is a sectional view on the line 4-4 of Figure 2;
Figure 5 is a cross section, showing my improvement applied to a different
form of tyre;
Figure 6 is a dissociated view of the contiguous ends of the protector;
Figure 7 is a plan view of one of the tightening bolts and their nuts, showing
the same disconnected from the other parts;
Figure 8 is a detail section taken through the same; and
Figure 9 is a sectional view illustrating a modification.
Referring to Figures 1, 2, 3, 4, 6, 7 and 8, the tyre A is provided with a
protective rim which, in Figure 1, is shown to be formed of two sections a and a',
though this is not essential, for the tyre may be formed of an integral piece of
material. The contiguous ends of the rim are each formed with enlargements a³
and a³, and the end a² is formed with a slightly reduced portion at which is adapted
to fit into the end a³, as shown best in Figures 2, 3 and 8.
Each of the ends a² and as is formed with two upwardly extending ears 6 and 6¹
which have overhanging portions & projecting inward, see Figures 2, 6 and 8.
It will be seen that when these ends are received one within the other, the
ears and bare opposite each other so that the rim may be tightened by moving
the ends apart. This tightening is effected by means of the threaded bolts d which
have at their middles heads e by which they are operated, the threads of the bolts
being oppositely disposed on each side of the heads.
Receiving each end of the bolts d are compound nuts, each of which comprises
three sections, the outer section c being directly contiguous to a central section c¹,
which is formed of rubber or other resilient material and which has the inner
section bearing against its inner side, said inner section being of metal. The
three sections of the nuts are joined to each other by means of dowel pins c³,
which hold them from independent rotary movement, but make them capable of
slight longitudinal movement under the influence of the expansive sections c'.
Each of the outer sections c is provided with a groove in its end, which
grooves are adapted to receive the inner edges of the ears b and 6 and to have the
overbanging portions 2 lie in the upper horizontal arms of the grooves.
It will thus be seen that by operating the screw bolts d, the nuts at each
end thereof may be drawn towards and from the middle of the bolts, so as
to force the ears 62 away from each other and thus contract the rim, and cause it
to bind on the tyre A.
In Figure 51 have shown my improvements applied to a tyre composed of the
wooden Jelloe A' and the pneumatic cushion A' around which the rim is passed,
and the extremities a and a³ are arranged as in the other form and have ears b
and b, all of which will be understood.
In the first eight figures of the drawings, I have shown two threadled bolts d
for holding the ends of the tyre; but by reference to Figure 9 it will be seen that
the compound nuts ou said shafts may be elongated transversely so as to extend
from one of the ears b and b' to the other, thus making only one of the bolts d
necessary. To permit these transversely clongated nuts to receive the ears, their
end sections c are each formned with two grooves f, as Figure 9 shows.

page_text: 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. A tyre having a protective rim, the same having its contiguous ends
enlarged and curved so as to extend inwardly around the sides of the tyre
and beyond the same, said contiguous ends lying one within the other and
having their flat sides making snug contact with each other, each side of each
end having an ear extended inwardly and beyond the tyre a threaded bolt,
and means for connecting said bolt to the ears to push them apart, substantially
as described.
2. A tyre having a protective rim, the same having its contiguous ends
enlarged and curved around the sides of the tyre and extended inwardly there-
from, the said ends being arranged one within the other and having their flat
sides snugly engaged with each other, each side of each end having an inwardly
extended portion to form an ear, the ears of each end being longitudinally
aligned with those of the other, a nut engaging each ear, and two threaded bolts,
the bolts being respectively engaged with each pair of longitudinally aligned nuts,
whereby the ears may be spread, substantially as described.
Dated this 21st day of July 1896.
A. M. & WM. CLARK,
53 Chancery Lane, London, Chartered Patent Agents.