proved Instrument or Appliance for Indicating or Locating the Position of Punctures in the Air Tubes of Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 24th June, 1896
Complete Specification. Left, 24th Dec., 1896-Accepted, 6th Mar., 1897
VISIONAL SPEC
Improved Instrument or Appliance for Indicating or Locating the
Position of Punctures in the Air Tubes of Pneumatic Tyres.
. I. RICHARD JAMES SCOFIELD of Russell Street, Chorlton-on-Medlock,
Manchester, in the County of Lancaster, Manufacturer, do hereby declare the
nature of the said invention to be as follows:-
This invention is designed to provide a puncture locator or an appliance whereby
the position of a hole or puncture in the pneumatic tubes of cycle or other tyres
may be readily ascertained.
It consists essentially of an appliance constructed with a chamber containing a
light material capable of being moved or agitated or acted upon by a fine current
or jet of air to be moved over the exterior of the tube so that when it is over the
puncture the material therein will indicate by movement or otherwise the stream
or jet of air.
In carrying out the invention I at present prefer to construct it of two parts
hinged or jointed together which can be brought together to embrace the tube at
any part of its length and form an air tight chamber around it. The ends are
formed to. press around or grip the tube to form an air-tight joint therewith.
Or instead of encircling the tube the appliance may be made to fit over one side
of the tube and be compressed against it to form a tight joint therewith.
When formed in two parts they are hinged or pivoted together and packed with
rubber or other suitable material to make an airtight joint.
In the chamber so formed is placed any suitable light material capable of being
moved or agitated or otherwise acted upon by a fine spray or jet of air such for
instance as a fluid smoke fine cotton threads or wool or a small Hame.
Instead of such easily agitated material a small mirror reflector-glass or other
material may be employed upon which moisture would condense or upon which
smoke or any dense vapour would be visible.
The appliance may be made of glass xylonite or other suitable material preferably
transparent or provided with an aperture covered with glass or other transparent
material through which the movements, in the interior can be observed.
The ends may be made on the skew or with screw threads so that by turning
the appliance round the tube it will be caused to travel over it.
To locate or indicate a puncture the tube is inflated and the appliance placed in
position and caused to traverse the tube when it is in conjunction with the puncture
the issuing spray or jet agitates the material in the chamber or otherwise causes
an indication therein which can be observed.
Deted this 23rd day of June 1896
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.

page_text: Improved Instrument or Appliance for Indicating or Locating the
Position of Punctures in the Air Tubes of Pneumatic Tyres.
I, RICHARD JAMES SCOFIELD, of. Russell Street, Chorlton-on-Medlock,
Manchester, in the County of Lancaster, 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 is designed to provide a puncture locator or an appliance whereby
the position of a very small hole or puncture in the pneumatic tubes of cycle or
other tyres may be readily ascertained.
It consists essentially of an appliance to embrace or encircle and to be moved to
and fro over the exterior of the tube or tyre constructed with a chamber to contain
a light material capable of being moved agitated or acted upon by a fine spray or
jet of air so that when the appliance is over the puncture the material is displaced
or by its movement or otherwise indicates from whence the spray or jet of air is
issuing.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Perspective view of the appliance in position on the pneumatic tube.
Fig. 2. Perspective view of the appliance detached.
Fig. 3. Side elevation.
Fig. 4. Transverse section.
Fig. 5. Longitudinal section..
Fig. 6. Side elevation showing modified construction.
I construct the appliance with an exterior casing A fitted into, or attached to
two ends or end pieces B having an internal diameter somewhat less than that of
the casing A thereby forming a chamber C. The diameter of the casing A is
greater than the diameter of the air tube or tyre D and the internal diameter of
the ends B is rather less than the tyre or tube D leaving the space or chamber C
encircling the tube when the appliance is in use as shown in Fig. 1.
The exterior casing A is preferably made of a transparent material such as
celluloid, glass, a gelatinous material, mica or the like or it may be made of a
material such as gauze wire or the like through which a spray or jet of air can
penetrate: The ends B are made of metal, vulcanite, celluloid or other rigid
material.
I prefer to make the appliance with the ends B of horse shoe or C shape and
with a slit or aperture E along one side through which the tube or tyre D when
deflated can be passed. When applied to a single tube tyre the slot or slit E will
be wider than for an inner tube. If desired the appliance may be made in two
parts with a hinge F see Fig. 6 so that it can be opened to be placed round and
embrace the tube or tyre D.
'In the chamber C or interior of the appliance place a small quantity of finely
'powdered French chalk or other light material which will coat the interior of the
casing A with a fine layer, or which will be easily displaced or agitated by a fine
jet or spray of air.
When not in use as a locator or indicator the appliance may be used as a case or
holder for repairing materials for which purpose l'insert a box or holder G in the
interior which can be easily removed when the appliance is to be put into use.
To locate or ascertain the position of a puncture or small hole the appliance is
placed over the tyre or tube D which is then inflated. The light material is placed
in the chamber C and dusted over the interior of the casing A and the appliance
is moved to and fro over the tube. When it is over the puncture the jet or spray

page_text: of air issuing therefrom displaces the material from the surface of the casing A or
otherwise agitates the light material which can be observed from the outside giving
a clear indication of the position of the hole or puncture in the tyre.
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. An appliance for locating or indicating the position of a puncture or small
hole in a pneumatic tube or tyre constructed to embrace the tube or tyre with a
chamber surrounding it in which a light materia! is placed capable of being
displaced or agitated by a fine spray or jet of air substantially as described.
2. An appliance for locating or indicating the position of a puncture or small
hole in a pneumatic tube or tyre constructed with a transparent exterior casing
such as A fitted into ends B forming a chamber between them to hold a light
material substantially as and for the purpose described.
3. An appliance for locating or indicating the position of a puncture or small
hole in a pneumatic tube or tyre constructed and arranged substantially as described.
and shown.
Dated this 23rd day of December 1896.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.