Improvements in and relating to Elastic Tyres for Vehicle Wheels.
Year: 1895

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c., Act, 1883), as allowed by
the decision of the Comptroller General of the 16th day of February 1897.
Date of Application, 13th Mar., 1895--Accepted, 24th May, 1895
COMPLETE SPECIFICATION (AMENDED).
Improvements in and relating to Elastic Tyres for Vehicle Wheels.
We, RUDOLF EDUARD CUNY-PIERRON, and ISIDOR KLEIN, both of
4, Jasomirgottstr., Vienna, Austria, 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:-
The device forming the object of the present invention consists of an elastic tyre
formed of a series of plates laid one against the other and fastened to the rim of
the wheel, in a position either at right angles or slanting to a line drawn
tangentially to the rim of said wheel, said plates or discs being either embraced by
the rim of the said wheel and thus held securely attached to the same or having
interior securing bands or wires or one such band or wire, and being in this case
merely guided by the rim.
And in order to make the present specification more easily intelligible reference
is had to the accompanying drawings in which similar letters of reference denote
similar parts throughout the several views:
Fig. 1 being a general elevation of a wheel provided with the improved tyre.
Fig. 2 a perspective view of a segment of the tyre,
Fig. 3 a detail perspective view drawn to a larger scale of one of the plates
forming the said tyre,
Fig. 4 a side elevation of the apparatus for compressing the plates,
Fig. 5 a detail view of the clamp to hold the two parts of the form or mould
together into which the blanks are forced,
Fig. 6 is a detail perspective elevation of the plate operating mechanism,
Fig. 7 is a plan view of the plate carrier with the top plate removed,
Fig. 8 is a section on line xx of Fig. 7,
Fig. 9 is a longitudinal section through a part of the tyre showing the manner in
which the plates engage one in the other.
Fig. 10 is a section on line y y in Fig. 7,
Fig. 11 shows in side elevation a modified form of plate,
Fig. 12 a perspective elevation of mechanism for working plates of the kiud
shown in Fig. 11,
Fig. 13 shews the way in which such plates are fitted to the rim of the wheel,
the holes being omitted."
Figs. 14 and 15 shew a modified form of attaching such plates to the rim of the
wheel according to which no securing bands are required, and
Fig. 16 a part side elevation of the wheel rim and tyre, in which the plates are
arranged slanting to a line drawn tangentially to the rim of the wheel.
Din 17

page_text: The plates are advantageously made of rough or tanned leather, but may be of
other suitable material such as rubber having inlaid fabric, very closely woven
fabrics, felt or cellulose.
The plates A, if they are to be secured by one ring only are cut out to the form
shown in Fig. 3 said plates having a slot a for the reception of the securing band
and other irregularly arranged perforations a', a', for the purpose hereinafter
described. If the plates are made of leather or felt the fibres of the same should
first be loosened by steaming them in suitable boilers under suitable pressure, and
then soaking the same in heated oil or creosote to saturation, so that they will be
thoroughly impregnated.
The plates thus prepared are then introduced into a suitable press in which they
are compressed to form seginents of about 30 to 60 degrees, the slots a of each
plate or disc being made to correspond in position with each other, whilst the
irregularly formed perforations a¹ enable the material of one plate to be pressed
into such perforation of the next lying plate so that the plates will be more
intimately connected together as shown in section in Fig. 9.
In order to form a complete tyre (Fig. 1) the segments are fastened together
by means of a steel or iron band b passed through the openings or slots a, the ring
thus formed is placed on the rim of the wheel and the ends of the connecting
band are hooked together or secured in other suitable manner. In Fig. 1 the
ends of the securing band are shown fastened by hooks 616. The space in the
tyre formed by the hooks 61, 61, should be filled out with a suitable leather
wedge inserted and fastened therein. Each segment is fastened to the rim by
means of a screw c.
The press in which the separate leather plates are combined consists mainly of a
segment shaped mould M having the radius of the finished wheel or tyre and
having a section corresponding in form to that of the plates A to be compressed,
and a pressure piston or plunger M¹, to fit the said mould, said plunger being
attached at the end of a stout lever m* oscillating on a pivot in the standard of the
apparatus, which coincides with the centre from which the radius of the mould is
struck. The mould is provided with a removable plate carrier device consisting
of three parts, viz. the plate n to rest on the bottom of the mould, the stem n²
having its edges provided with teeth and being curved to correspond with the
form of the mould, said stem being fixed in the plate n (Fig. 6) and having a
section corresponding to that of the steel or iron band which is to secure the
plates together, and the securing plate p. This latter consists of two parts p, p¹,
the latter being secured to the former which is provided with lateral facial
depressions in which are pivoted two pawls q, q, (Figs. 7 & 8) having their bosses
flattened at the rear and a spring g' bearing against the said flattened portions of
the said pawls and tending to press the same in contact with the teeth of the
stem n'. Said pawls thus allowing a motion of the plates p, pl down the stem in
the direction of the arrow in Fig. 6, but preventing movement in the opposite
direction by engagement with the teeth.
In order to feed a plate into the device p p³, n, n', the pawls 9, 9, are placed as
shown in dotted lines in Fig. 7, the plates p, p', removed from the stem n¹ and the
slotted and perforated plates A threaded onto the stem n¹ by their slots a. As
soon as the mould or casing M has been filled with a sufficient number of plates,
the closing plate p, p', is placed on the steni n¹ with the pawls in engagement with
the stem teeth, and the whole placed in the mould M. In order to enable a
convenient insertion and removal of the stem provided with the plates into and
from the mould M, the latter is formed of two parts m¹ m² the latter of which is
hinged to the former and capable of being moved downward round its hinge as
shown in dotted lines in Fig. 4 a pivoted clamp r being attached to the upper end
of the stationary part m² of the mould and having a pressure screw which when
the clamp is thrown round the hinged part of the mould may be turned round and
caused to press both parts of the said mould together. The plunger M' is now
pressed onto the plate p¹ by turning the screw spindle t which has a roll t' at its

page_text: lower end guided in a bow of the lever m', so that the plates in the mould will
be thoroughly pressed together, the stem n¹ projecting into a channel of the
plunger M.
As soon as the plates have been sufficiently compressed, the screw
spindle is turned back taking with it the plunger M and the arm m³, but as
will be readily understood the closure plate p, p, will remain in the lowest position
into which it has been driven by the plunger owing to the engagement of the
pawls 9, 9, with the teeth of the stem n'. The stem with the closure plate and the
plates thereon is now removed from the mould and a second stem placed therein and
the operation repeated. The plates remain on the stem in a compressed condition
until they have almost given off all their elasticity, whereupon the plate p, plis
removed and the segment thus formed taken off the stem. The plates A may be
coated with some binding substance before being threaded onto the stem n¹ if
necessary. Instead of a screw press it is obvious that a hydraulic press may be
employed.
Instead of one flat securing band 6 several bands or wires may be employed in
which case the plates must be correspondingly perforated. The plates may thus
be shaped and perforated as in Fig. 11, in which case the device onto which the
said plates are threaded should be arranged as shown in Fig. 12, two circular
stems k, k, having teeth or notches at their upper ends being substituted for the
stem n¹ of Fig. 6 and the closure plates p, p¹, being perforated to fit. The corners
of the plates are advantageously cut away to allow the same to fit onto the U shaped
rim v of the wheel (Fig. 13). Or if desired the plates may dovetail into the rim as
shown at Fig. 14 in which case they should be inserted separately into the rim and
then compressed by hammering, but if it is required to place segment shaped strips
onto a dovetail rim, the latter should be split longitudinally as shown at v₁, v²,
Fig. 15 the two halves being connected by suitable screws v³. Fig. 16 shows a part
of a rim having a tyre of the kind described but with the plates arranged slanting
on the rim.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that we make
no general claim to a wheel tyre consisting of a series of plates projecting from the
rim, but what we claim is-
1. An elastic tyre consisting of a series of segments, each segment being formed
of a number of similar plates of leather or equivalent material, having coinciding
slots and irregular perforations, said plates being compressed together to form said
segments, and the said segments being secured together and to the wheel rim, by a
band passing through the slots of the plates as described and shown.
2. The combination of a longitudinally divided mould, having a stationary part
and a hinged part, means for securing said parts together, a detachable stem having
foot plate to fit inside said mould, and adapted to receive the plates forming the
tyre as specified, a closure plate to said stem, consisting of upper and lower plates p, p',
laterally mounted spring pressed pawls 9,9, beteewn said plates, to engage teeth on
said stem, a plunger M having channel 3, a radially mounted arm m' to carry said
plunger, and means to force said plunger into the said mould, substantially as
described and shown and for the purpose specified.
حيمد
LMh 1005
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicants.