An Improved Tool for Removing and Replacing the Covers of Pneumatic Tyres.
Year: 1898

page_text: '
PROVISIONAL SPECIFICATION.
An Improved Tool for Removing and Replacing the Covers of
Pneumatic Tyres.
We, THOMAS BENNETT, of 70 and 71, Turnmill Street, Farringdon Road, in
the County of London, Goldbeater, and HERBERT BENNETT, of Queen Anne's
Mansions, St. James's Park, in the County of London, Gentleman, do hereby
declare the nature of this invention to be as follows;-
-
This invention relates to an improved tool for removing the outer covers of
pneumatic tyres, of the kind provided with endless wires, from the rims of wheels
and also for replacing them thereon with great facility.
According to our invention we make our tool of a round metal rod of suitable
length and fitted into a handle of a shape to allow the same to be firmly grasped
by the hand. The outer end of the rod is flattened out, the said flattened part
being provided on each face at the end nearest the handle with a projection or
flange and the free end is slightly bent to allow of the tool being easily inserted
between the rim and cover of the tyre.
To the rod we adapt a spring arm or horn, free to rotate on the rod and pre-
ferably made of wire turned outwards from the ferrule end of the handle and
upwards and then into a loop the free end of the wire being then turned inwards
and into a kind of hook which passes over the rod.
To make use of the improved tool for removing the outer cover of a deflated-
tyre the end of the spring arm or horn is pressed against the edge of the flattened
end of the tool and the parts are inserted under the edge of the cover of the
tyre. The edge of the tyre is prized over the edge of the wheel rim, the end of
the spring arm and the edge of the flat end of the tool being still in contact. The
tool is now slightly twisted or turned thereby bringing the edge of the cover
further from the rim, and releasing the end of the spring arm from the pressure
of the cover; the spring arm being thus released moves along the rim away
from the tool, which is turned so as to again bring it flat on the rim, and the end of
the spring arm being made thicker than the end of the tool will be pressed on by
the cover the end of the tool being free so that it can easily be pressed between the
tyre and the rim until it is again brought into contact with the spring when the
same movements as before are repeated and so on until the cover is removed.
To replace the cover it is put in the rim as far as it will go easily; the end of
the tool is inserted between the edge of the cover and the inside of the edge of
the rim (where the cover is already on the rim) and as near as it will go to the
part that has still to be put on when the tool is worked as above described.
Dated the 11th day of August 1898.

page_text: An Improved Tool for Removing and Replacing the Covers of
Pneumatic Tyres.
We, THOMAS BENNETT, of 70 and 71, Turnmill Street, Farringdon Road, Gold-
beater, and HERBERT BENNETT, of Queen Anne's Mansions, St. James's Park,
Gentleman, both in the County of London, 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 improved tool for removing the outer covers of
pneumatic tyres, of the kind provided with endless wires, from the rims of wheels
and also for replacing them thereon, with greater facility.
Our improved tool consists in the combination with a lever or its equivalent
adapted to be inserted under the edge of the tyre cover for raising it, of what
may be termed an advancing arm or horu, the parts being so arranged that when
the tyre cover has been raised the arm springs or can be pushed forward, and,
being thicker than the lever, will be gripped between the edge of the cover and
the rim so as to allow the lever to be advanced up to the arm and so on until the
tyre cover has been sufficiently removed as hereinafter more particularly described.
To enable our invention to be clearly understood we will describe how it can
be carried into practice by reference to the accompanying, drawing, in, which:-
Figure 1 is a front elevation; and,
Figure 2 a side elevation of an arrangement of tool made according to our
invention and having a spring arm or horn and which arrangement we have found
to give good results in practice:
Figure 3 is a plan of Figure 1:
Figure 4 is a front elevation shewing the tool provided with a hinged.arm or
horn:
Figure 5 is a plan shewing how the tool is applied for removing the edge of a
tyre cover from the rim of a wheel:
Figure 6 is a side elevation showing the next position of the tool;
Figure 7 is an inverted plan of the rim of the wheel on the line 7-7 Figure 6
shewing the tool in section:
Figure 8 is a similar view to Figure 7 but shewing another position of the
tool:
Figure 9 is a sectional plan shewing how the tool is applied to replace the cover.
Similar letters in all the figures indicate similar or corresponding parts.
The said tool is made of a round metal rod a fitted into a handle 6 of a shape
to allow the same to be firmly grasped by the hand. The outer end of the rod a
is flattened out at c and is advantageously provided on one side with a flange or
projection d and the end of the flattened part c is advantageously slightly bent
over at e to allow of the tool being easily inserted between the wheel rim and the
cover of the tyre.
f represents the arm or horn adapted to the rod a; the said arm or horn may
act either springwise as shown in Figures 1, 2 and 3, or may be hinged as shewn
in Figure 4. The arm or horn is advantageously formed of wire and when required
to act springwise it can be coiled around the rod a, as shewn in Figures 1 and 2,
then turned outwards from the ferrule end of the handle at g, then upwards as
ath and formed into a loop i the free end of the wire being then turned inwards
into a kind of hook k which passes over the rod a, as clearly shewn in Figure 3
thereby limiting the extent of movement of the arm, and in the arrangement
shewn in Figures 1, 2 and 3, always keeping the spring in tension.
is a collar on the rod a to retain the arm which can freely turn on the rod.

page_text: In Figure 4 it will be seen that the arm or horn is hinged to a ring m which
can turn freely on the rod a between the collar and the ferrule n of the handle.
To make use of the improved tool shewn in Figures 1 to 3, for removing the
outer cover of a deflated tyre, the end of the spring arm or horn f is pressed
against the edge of the flattened end c of the tool and the parts are inserted under
the edge of the cover o of the tyre, as clearly shewn in Figure 5, the flange d
bearing against the edge of the rim p. The edge of the cover of the tyre is prised
over the edge of the wheel rim p by moving the tool handle downwards the end
of the spring arm and the edge of the flat end of the tool being still in contact
as shewn in Figure 6. The rod being now slightly twisted or turned as shewn by
dotted lines in Figure 7 will bring the edge of the cover further from the rim and
will release the end of the spring arm f from the pressure of the cover and the
arm being thus released will spring forward, as shewn in Figure 8, the amount
of this forward movement being as already mentioned limited by the hook k on
the rod a.
The tool is now turned so as to bring it flat on the rim and the end of the spring
arm being made thicker than the end of the tool will be held pressed between
the cover and the rim while the flat end c of the tool being free from such pressure
it can easily be moved forward between the cover and the rim until it is again
brought into contact with the arm f; the same movements as before are repeated
and so on until the cover is removed.
Should, however, the spring arm from any reason not move forward it can be
easily moved by pressing the end of the hook by the thumb.
To replace the cover it is put in the rim as far as it will go easily, the end of
the tool is inserted between the edge of the cover and the inside edge of the rim where
the cover is already on the rim and as near as it will go to the part which has
still to be put on, when the tool is worked as above described and as will be
clearly seen by reference to Figure 9.
The operation of the tool having a hinged arm as shewn in Figure 4 is sub-
stantially the same as that described for the spring arm tool except that the arm
has to be moved forward instead of springing forward.
In the drawings we have shewn a simple form of arm or horn but it will be
obvious that this construction may be considerably modified and it will also be
obvious that, in lieu of the rod a, we may employ a pair of levers hinged together
after the manner of curling tongs, the nose of the normally closed ends being
adapted to be inserted under the edge of the tyre cover which can then be raised by
bringing the handle portions of the levers together, the arm or horn f will then
advance or can then be pushed forward and, the handles being released, the lever
can be moved forward as herein before described with reference to the arrange-
ments illustrated in the drawings.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be. performed, we declare that what
we claim is:-
1. A tool for removing or replacing the covers of pneumatic tyres consisting of
the combination with a lever or its equivalent adapted to be inserted under the
edge of the tyre cover for raising it, of an arm so arranged that when the tyre
cover is raised, the said arm advances or can be advanced, substantially as
described.
2. A tool for removing and replacing the covers of pneumatic tyres consisting
in the combination of a rod having a suitable handle and a flattened outer end
with a spring or a hinged arm or horn adapted to turn freely on the rod, sub-
stantially as described.
3. The described tool for removing and replacing the covers of pneumatic tyres
comprising a rod a having a flattened end e and flange d and a spring arm such
as capable of turning on the rod a, combined and operating, substantially as
described.

page_text: 4. The described tool for removing and replacing the covers of pneumatic tyres
comprising a rod a having a flattened end c and flange d and a hinged arm or
horn such as capable of turning on the rod a, combined and operating, sub-
stantially as described.
Dated the 19th day of October 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.