Improvements relating to Pneumatio Tyres for Wheels.
Year: 1896

page_text: Date of Application, 24th Apr., 1898
Complete Specification Left, 24th Feb., 1897-Accepted, 27th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements relating to Pneumatio Tyres for Wheels.
1 MAURICE LACHMAN of St. George's Club, Hanover Square in the County of
London, Gentleman, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a mode of securing the tyre cover in the rims of wheels.
In carrying out this invention, to secure the covers in the rims of wheels, 1 provide
a ring of light spring steel of a width to fit within the turned-in edges of the rim.
This ring is bent longitudinally to a slight angle in both directions, so that it will
grip against the turned-in edges.
The bead on the cover is inserted under the turned-in edges, and is firmly
gripped by the spring plate.
To remove the cover, it will bo only necessary to push inwards the spring plato,
when the cover will be released, and can easily be removed. It can be replaced in
much the same manner.
11 1000e
NEWTON & SON.
Agents for the Applicant.
Improvements relating to Pneumatic Tyres for Wheels.
1 MAURICE LACHMAN of St. George's Club, Hanover Square in the County of
London, Gentleman, 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 a mode of securing pneumatic tyre covers in the rims of
wheels.
In carrying out this invention, I employ a rim of any section having turned-in
edges, and I provide a ring, or it may be lengths, of light spring steel, of a width to
extend just beyond the turued-in edges of the rim, and which I place inside the rim.
This ring, or the pieces, are slightly bent or curved longitudinally, so that when
secured along the centre of its longth to the rim, the edges will rest against the
turned-in edges of the rim.
The cover is preferably formed with a small bead on both edges, and each bead is
inserted between the turned-in edges and the spring or springs, and will be firmly
held by the spring plate. Instead of having a bead or enlargement, I may thicken
the cover slightly, to allow of a channel being formed near each edge.
To remove the cover, it will be only necessary to push inwards the spring plate at
one point with the finger, when enough of the cover will be released, and can be
pulled out, to ensure the rest readily "peeling" out.
It can be replaced in much the same manner, that is to say, get in a small piece,
and the rest will enter without difficulty.

page_text: And in order that my invention may bo clearly understood, I will proceed to
describe it with reference to the drawing hereto annoxed, and which is employed
simply by way of an example.
Fig. 1 is a sectional view of a rim and tyre constructed according to my
invention.
Fig. 2 is a longitudinal view of a rim, shewing the spring plates, but with the tyro
cover removed.
The rim A may be made of two strips of thin metal bent to the hook shape,
as shown in the section, the edges of the outer strip overlapping, and folding round
the edges of the inner strip. The inner strip, which forms what may be termed a
carrier, for a purpose to be presontly explained, is bulged inwards along the whole
centre of its length, the object being to reduce the depth of the rim, so that the spring
or springs inay be comparatively flat. An additional advantage of the bulged portion
is to strengthen the rim.
This carrier is a somewhat important feature, but it may be attained in other ways
than that shewn; for example, I may use transverse strips of the form indicated,
placed in what I terin the outer rim at intervals.
B is the spring, which may be one continuous strip, or in lengths a short distance
apart, as shown at Fig. 2.
This spring or springs may be rivetted to the inner strip or rim, or the transverse
strip, or inay he scoured by the head of the spokes C, as shewn.
Dis the beaded cover, and E the pneumatic tube. The beaded edges of the
cover (which, it will be seen, are somewhat pear-shaped, so that they will readily
enter) will be inserted between the edges of the rim and the edges of the spring or
springs, and the only effect of inflating tho pneumatic tube E, will be to cause the
spring clip to hold the cover tighter. The inflation bas, however, in no sense
anything to do with holding in the covor, which is held only by the spring plate or
clip. On deflating the tubo, the clip will permit of the cover being readily removed
or renewed, as may be required, and as before described.
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. In a pneumatic tyre, the use of a spring clip (or spring clips) inside the rim,
to grip the edges of a cover between itself and the rim, as set forth.
2. In a pneumatic tyre, means for reducing the depth of the rim, in combination
with a spring clip or clips, as set forth.
3. In a pneumatic tyre, the mode of securing the cover to the rim, as set forth.
Dated this outh C
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