Demountable Rim and Felly Band Page: 3 of 4
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1,224,511
tion B is illustrated as provided with blocks
b b, the section D with blocks d d, and
the section C with blocks c c'. 'As illus-
trated, the pairs of blocks b d and d' 0c are
b similar and between each of them a mortise
joint is formed. This joint is so formed that
the tenon in the one block laps over the
adjacent rim section: for instance, the tenon
in the block d overlaps the rim section B.
10 The walls of the mortise in the block b also
overlap the rim section D. By this means,
the joint between sections B and D prevents
radial or lateral movement of the said con-
nected sections. The joint between rim sec-
15 tions C D is similarly constructed. The
joint on the top of Fig. 1 between rimn
sections B C is also a mortise joint but it
is differently arranged than the other joints
and is adapted to permit one of the said
20 parts to move radially, relative to the other.
To accomplish this, one of the parts of the
mortise and tenon joint is made so that it
does not overlap the adjacent rim section.
As illustrated, the tenon in the block c at its
25 outer end, comes to the edge of the rim
section C to which it is attached, and to-
gether with the mortise in block b' prevents
relative lateral movement of the connected
sections, while permitting relative radial
so movement. The. walls of the mortise in
block b1 do however overlap the rim section
C and prevent relative radial movement of
the parts in one direction. It will therefore
be seen that the rim section C at its upper
35 end may move radially so as to break the
lock provided by the mortise and tenon
joint in order to disassemble.
The several pairs of blocks b-d b1-o
and c'-d1 are wedge-shaped or dove-tailed
40 at their outer edges as at bV, d, and these
outer edges are cut under or beveled as
seen at b, d3 Fig. 6. The object of these
dove-tailed and cut under edges is to assist
in locking the rim to the felly-band as here-
45 inafter explained. The felly-band E is the
usual integral band having at one side an
outwardly extending flange e and at the
other side an inwardly extending flange el
provided with bolt holes for the bolts which
50 hold the same to the felly. To this band I
have added means for receiving and holding
the rim blocks which serve not only to hol
the rim in place on the band, but to reliably
hold the parts of the rim together when fhe
K5 tire is deflated. The said means on the
felly band are seen in Figs. 5 and 6. In
Fig. 5 the blocks are illustrated in dotted
lines in plan. They comprise the blocks
F G of which a pair is provided for each
60 of the rim locks. These blocks F G are
separated' ti, form a wedge-shaped channel
between them 'adapted to receive the dove-
tailed rim blocks, and these felly band blacks.
are also under cut on their inner edges as
65 seen at f g. The blocks are illustrated asriveted to the felly band, but this mode of
securing them is not essential as they might
be welded in place or integral with the band.
The manner of operating my invention
is as follows: 70
The tire will be presumably the innertube
or pneumatic tire. The inner tube will be
placed inside of the tube casing in the usual
manner and slightly inflated, as usual after
which the casing may be laid uponthe floor 75
with the valve stem to the operator's left.
The operator should then place the large
'ection B of the rim inside of the casing
with end block b to the operator. The valve
stem may then be inserted through the hole 80
H of the rim. The section D is then inserted
inside of the casing, the lower end contain-
ing the block d overlapping the end of the
section B and passing over said end about
an inch between the said section and the 85
casing. Thereupon, the section C should
be inserted in place inside the casing, and
the joint b1-c engaged. The section D
is then moved up until the joint el d' is
properly engaged. The operator may then 9o
take any small tool such as a screw driver,
and insert same between the blocks b d, pry-
ing to the left until the joint b-d slips into
position.
The tire should then be inflated. Before *b
it is fully inflated, the block b of the large
section B should be tapped to see that the
joint is in proper alinement. The rim
should not be applied to the felly band or
wheel until the tire is well inflated, as the loo
several sections of the rim, while they have
sufficient temporary stability to be handled
without coming ;apart, are not held rigidly
together until the tire is properly inflated.
When this has.been accomplished the wheel, 105
which is assumed to de on the car, is jacked
up in the usual manner, in order that same
may be rotated, thereupon said wheel is
rotated until the hole I in the felly band,
or wheel, reaches the uppermost point, or 110
thereabouts, whereupon the assembly repre-
senting the demountable rim and tire is ap-
plied to the wheel, in the following manner.
Apply the inner side of rim A to the
wheel, insert the valve stem through the 11s
hole I in the felly-band, after which the rim
may be placed on the wheel by pushing
with the foot against the rim, or tire, at the
point opposite the valve stem. The con-
nected pairs of rim blocks entering the chan- 120
nels between the felly-band blocks, and be-
ing held there by their respective cut un-
der edges forms a perfectly rigid and united
construction comprising the tire, rim and
wheel. The assembled construction can then 125
be held in place by the usual bolts N passing
through the bolt holes in the flange e. on
which are the usual wedges 0. These
wedges are held as in the usual manner, by
nuts P and force the flanges a and e to- iso
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Reference the current page of this Patent.
Stephens, Charles D. & Bachman, Joseph A. Demountable Rim and Felly Band, patent, May 1, 1917; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858938/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.