Improvements in or relating to the Removal of Pneumatic Tyres and the like from Wheel Rims.
Year: 1896

page_text: Date of Application, 16th Sept., 1896-Accepted, 7th Nov., 1896
COMPLETE SPECIFICATION.
Improvements in or relating to the Removal of Pneumatic Tyres
and the like from Wheel Rims.
I, HENRY JOHN WAGG of 15 Great George Street, in the City of Westminster,
Consulting 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 :-
This invention relates to the removal of pneumatic tyres and the like from
wheel rims and comprises an improved tool for this purpose.
This tool can first be used to prize the wire or wired or beaded edge of a tyre
or cover out beyond the rim, and then have certain of its parts so operated as to
enlarge or lengthen the loop or portion first produced and thus facilitate the
opening up or removal of the tyre or cover.
According to this invention the improved tool comprises smooth fingers which
normally are close together and preferably are tapered or pointed, constituting
when thus together a device which can readily be inserted between the edges of
the rim and tyre and used to prize up the wire or edge of the tyre or cover; to
these fingers, operating devices such as a screw or handles are connected in such a
manner that after the fingers have prized up the wire or edge they can readily be
operated to enlarge the loop previously produced.
For example one or both of the fingers can be arranged to slide upon a support
carrying the operating devices and if desired provided also with a handle; or the
fingers can be pivotted to each other or to an intermediate piece and provided with
extensions to be operated by the hand directly or through the medium of a screw
connected to both of them or operating a toggle.
In the accompanying drawings which illustrate by way of example two
constructions of tool according to this invention
Figure 1 is a perspective view of one form, and
Figures 2 and 3 are respectively a plan and side elevation of another form, like
letters indicating like parts throughout the drawings.
With reference first to Figure 1, A are two fingers bent and reduced at the
ends A' to facilitate their insertion between the tyre and the rim. These fingers
engage with and slide upon the bar B and are engaged by the tubular right and
left handed screw C journalled in bearings formed by the bent ends B of the
bar B so that it cannot have movement end wise; C is a handle by which the
screw can be rotated and B 2 is a folding handle by which the whole device can be
conveniently held. One finger is operated by the right handed portion of the
screw C, the other being operated by the left handed portion, so that after the
fingers whilst in the position in which they are shown in Figure 1 have been
inserted between the tyre and the rim as described, rotation of the screw C by
means of the handle C will cause them to move apart as required.
With reference now to Figures 2 and 3 the two fingers A are formed at the
ends of crossed arms A. 2 each provided with a handle A 3; where they cross these
arms are pivotted together by a rivet D as shown.
It is not essential, although desirable, that the ends A¹ should be bent or
reduced; but they must be of such shape that there is no risk of their injuring
the tyre when in use.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. Removing a pneumatic tyre or a tyre cover from a wheel rim by inserting
two fingers such as A, prizing the edge of the tyre outward from the rim and then
separating the fingers.
2. A tyre-removing tool comprising two fingers such as A for the purpose
specified, and a screw or handles or other means for moving them towards and
away from each other.
3. A tyre-removing tool comprising pivotted fingers such as A with or without
bent and reduced ends A¹ substantially as described.
4. The tyre-removing tool substantially as described and illustrated in Figure 1
or in Figures 2 and 3 of the accompanying drawings.
Dated this 14th day of September 1896.
זוזזום.
480.
Boult & Wade,
Agents for the Applicant.