Improvements in and relating to Pneumatic Tyres for Cycles and other Road Vehicles.
Year: 1897

page_text: Date of Application, 3rd Feb., 1897-Accepted, 1st May, 1897
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic Tyres for Cycles and
other Road Vehicles.
I, JONAS BERGMANN of Neubjdzow, Bohemia, Leather Manufacturer, 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 an outer cover for pneumatic tyres, which is made of
leather and is intended to supersede the rubber outer covers at present used.
These tyre covers of leather excel, as compared with those heretofore employed,
by their cheapness, lightness strength, durability, and ease of repair.
The subject of this invention is illustrated by the accompanying drawings, in,
which :-
Figure 1 shows a portion of the cover in the unrolled or spread out state.
Figure 2 is a section on the line - of Figure 1.
Figure 3 is a section through the cover taken whilst the cover is mounted on the
wheel rim.
Figures 4 and 5 are similar sections of other forms of construction of the
cover.
Throughout the views similar parts are marked with like letters of reference.
The cover proper a is composed of one or more pieces of leather which is thicker
at the tread than at the two ends.
Attaching rings or fish plates 6 of leather are sewn by means of a seam n to the
cover at both ends of the cover a in such a manner that the said plates 6 project a
slight distance beyond the edges of the said cover.
These attaching rings are skived or bevelled at their free ends as shown by
Figure 2, and when the cover is placed on the wheel rim, their bevelled edges.
overlap whilst the opposite ends of said attaching rings serve to effect the fastening
of the cover on the wheel rim.
It is to be understood that both the flesh side as also the grain side of the leather
can be used for the tread portion.
The cover may either be smooth on its outer surface (Figure 3) or it may be
formed with one or more ribs such as c shown by Figures 4 and 5. These
ribs are provided with insertions r of any suitable material for strengthening
purposes.
As shown in the accompanying drawing the cover of leather has exactly the
same shape as the rubber cover at present in use, and therefore the operation of
placing the new cover upon the wheel rim, as also the removal of the same, are
exactly the same.
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 cover for the pneumatic tyres of cycles and other road vehicles,
characterized by the fact that it is made wholly of leather and is provided with
leather attaching rings such as 6 which are sewn on to the edges of the cover a as.
set forth.

page_text: (2.) A form of construction of the tyre cover specified in Claim 1, consisting in
providing the tyre cover a with one or more ribs c which may be formed with
insertions r of any suitable material for the purpose of increasing the strength, as
set forth.
Date
T
UK ZAMILY XIXTY LONTE
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Associate Agent.,