Apparatus for innating Pneumatic Tyres.
Year: 1899

page_text: Apparatus for innating Pneumatic Tyres.
We, JULES EMRINGER and PROSPER EMILE MARCHAND, both of 101, Rue du
Faubourg, St. Denis, Paris, France, Engineers, do hereby declare the
nature of this invention to be as follows:-
Our invention relates to apparatus for the inflation by means of liquefied
carbonic acid of the pneumatic tyres of velocipede and other vehicle wheels. The
apparatus is designed with a view of permitting of an easy and rapid inflation of
the tyre with only the necessary volume of gas.
The accompanying drawings illustrate examples of three types of apparatus for
the purposes of our invention.
Referring to Figure 1 the apparatus comprises a tube or cylinder a made pre-
ferably of mild steel in which the carbonic acid is stored. The lower end of the
cylinder is hollowed so as to straddle the lower tube of the cycle frame by which
the cylinder is supported, the cylinder being also provided with a strap which
embraces the down tube that carries the saddle pillar. It is only necessary to
remove the cylinder for refilling a rubber tube attached to the orifice d in the head
of the cylinder conveying the carbonic acid to the valve inlet of the tyre. The
carbonic acid being stored at a high pressure in the cylinder, it is necessary to
provide a safety valve which will enable both a tight closure to be made and the
easy inflation of the tyre without risk of bursting it. This valve, which is situated
at the upper end of the cylinder a, comprises a pressure screw e and a membrane g
seated over the outlet passage f for the gas and serving both as a means of
closure as well as a safety valve. By slightly unscrewing screw e by which the
membrane g is held on its seat h, the membrane will be free to rise and allow of
the gas passing out. Should the valve not be closed at the proper moment, the
gas instead of bursting the tyre would burst the membrane g which thus constitutes
a safety valve. The apparatus shewn in Figure 1 is more particularly intended
for inflating cycle tyres.
Figure 2 illustrates a type of apparatus for the inflation of the wheel tyres of
auto-motor and other vehicles. In this case the cylinder a is made of larger
capacity, its bottom or foot is made square to prevent rolling, and it is also
provided with attachments for fixing it to the vehicle. The valve instead of
being a mere safety valve as before is provided with special means for expanding
down the gas so as to enable it to be employed only at the pressure desired. The
closure which is effected automatically varies in inverse proportion to the tension
of the regulating spring m. The conical valve is seated over a small escape
orifice which is traversed by the stem i the valve being held normally closed
upon a seat of some soft material by means of a spring, thus ensuring a gas-tight
closure and preventing the pulsations which might otherwise be produced on the
passage of the gas. The valve chamber is divided by a membrane which is
exposed to the pressure of the gas which has passed through passage f and is
loaded by a spring m compressed by screw e so as to control the action of the
valve. By turning screw e the spring m will be compressed and. bulge downwards

page_text: the membrane which pressing against stem i will open valve and allow a
certain quantity of gas to escape of which the pressure in space n (which may be
designated P) will tend to bulge the membrane upwards so that when the
pressure P is sufficient to counterbalance the, tension of spring m the membrane
will resume its initial form and
will no longer bear on stem
i
e
SO that valve will again close on its seat. By turning screw
gradually any degree of pressure desired P1, P2, etc. may be obtained,
but the spring m being incapable of balancing a
pressure above Pn
the valve will close automatically. at this limit of pressure which cannot be
exceeded so that bursting of the tyre cannot occur. As a measure of precaution
a small valve might be provided at p.
Figure 3 represents another modification. The upper end of the cylinder a is
reinforced and screw-threaded and has an internal shoulder upon which is
supported the base h¹ of the valve seat which is screwed into cylinder a and has
a central orifice f. The valve stem t has two shoulders and the valve contains
a washers, of ebonite for example, for ensuring the perfect closure of orifice f.
Two washers u u¹ cover a plug of indiarubber or other material v forming a gas
tight joint with the walls of cylinder a and stem t and a screw plug screws
into cylinder a and compreses the rubber block v. A cap y screws on plug and
engages with the shoulder r on stem t to the outer end of which is screwed a
coupling to which is connected the pipe for conducting the carbonic acid to the
tyre. This connecting pipe will burst at a certain pressure and thus serves as
a safety valve for preventing excess of pressure in the tyre. The action of the
valve is as follows:-The valve is opened by unscrewing cap y which on being
raised off shoulder r allows the valve and its stem to rise either of itself or
by screwing down the coupling z the movement being limited by shoulder r.
The carbonic acid then passes from cylinder a through bore f into chamber n
and thence through-the-bore-ff, of stem t-to-the-passage d-To close the valve
the cap y is screwed down and by bearing upon shoulder of steam t closes the
valve over orifice f.
Apparatus for inating Ineumatic Tyres,
We, JULES EMRINGER and PROSPER EMILE MARCHAND, both of 101, Rue du
Faubourg, St. Denis, Paris, France, Engineers, 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:
-
Our invention relates to apparatus for the inflation by means of liquefied
carbonic acid of the pneumatic tyres of velocipede and other vehicle wheels. The
apparatus is designed with a view of permitting of an easy and rapid inflation of
the tyre with only the necessary volume of gas.
The drawings accompanying our Provisional Specification illustrate examples
of three types of apparatus for the purposes of our invention.
Referring to Figure 1 the apparatus comprises a tube or cylinder & made
preferably of mild steel, in which the carbonic acid is stored. The lower end b
of the cylinder is hollowed so as to straddle the lower tube of the cycle frame
by which the cylinder is supported and the cylinder is also provided with a
strap by which it is clamped to the down tube that carries the saddle pillar.
=

page_text: It is only necessary to remove the cylinder for refilling, a rubber tube attached
to the orifice d in the head of the cylinder conveying the carbonic acid to
the valve inlet of the tyre.
The carbonic acid being stored at a high pressure in the cylinder, it is
necessary to provide a safety valve which will enable both a tight closure to
be made and the easy inflation of the tyre without risk of bursting the latter.
This valve, which is situated at the upper end of the cylinder a, comprises a
pressure screw e and a membrane seated over the gas outlet passage f and
serving both as a means of closure as well as a safety valve. By slightly unscrew-
ing the screw e by which the membrane g is held on its seat h, the membrane will
be free to rise and allow of the gas passing out. Should the valve not be
closed at the proper moment, the gas instead of bursting the tyre would burst
the membrane g which thus constitutes a safety valve. The apparatus shewn in
Figure is more particularly intended for inflating cycle tyres.
Figure 2 illustrates a type of apparatus for the inflation of the wheel tyres
of auto-motor and other vehicles. In this case the cylinder a is made of larger
capacity and its bottom or foot is made square to prevent rolling, while it is
provided with attachments for fixing it to the vehicle as before. The valve
instead of being a mere safety valve is provided with special means for expanding
down the gas so as to enable it to be employed only at the pressure desired. The
closure which is effected automatically varies in inverse proportion to the tension
of the regulating spring m. In this example a conical valve is seated over a
small escape orifice f which is traversed by the valve stem i, the valve 7 being
held normally closed upon a seat of some soft material by means of a spring
thus ensuring a gas-tight closure and preventing the pulsations which might
otherwise be produced on the passage of the gas. The valve chamber is divided
by a membrane g which is exposed to the pressure of the gas which has passed
through passage f and is loaded by a spring m. compressed by screw c so as to
control the action of the valve. By turning screw e the spring m will be com-
pressed and bulge downwards the membrane g which pressing against stem i
will open valve 7 and allow a certain quantity of gas to escape of which the
pressure in space (which may be designated P) will tend to bulge the mem-
brane upwards so that when the pressure P is sufficient to counterbalance the
tension of spring m the membrane will resume its initial form and will no
longer bear on stem i so that valve 7 will again close on its seat. By turning
screw e gradually any degree of pressure desired P, P, etc. may be obtained,
but the spring m being incapable of balancing a pressure above Pn the valve will
close automatically at this limit of pressure which cannot be exceeded so that
bursting of the tyre cannot occur. As a measure of precaution a small valve
might be provided at p.
Figure 3 represents another modification. The upper end of the cylinder a
is reinforced and screw-threaded and has an internal shoulder upon which is
supported the base of the valve seat which is screwed into cylinder a and
has a central orifice f. The valve stem has two shoulders and the valve
contains a washers (of ebonite for example) for ensuring the perfect closure
of orifice r. Two washers cover a plug of indiarubber or other material v
forming a gas-tight joint with the walls of cylinder and stem t and a screw
A cap
plug screws into cylinder a and compresses the rubber block v.
Ecrews on plug and engages with the shoulder on stem to the outer end
of which is screwed a coupling to which is connected the pipe for conducting
the carbonic acid to the tyre. This connecting pipe will burst at a certain
pressure and it thus serves as a safety valve for preventing excess of pressure
in the tyre.
The action of the valve is as follows The valve is opened by unscrewing
cap y which on being raised off shoulder allows the valve and its stem to rise
either of itself or by screwing down the coupling, the movement being limited
by shoulder r. The carbonic acid then passes from cylinder a through bore f

page_text: into chamber a and thence through the bore f', f, of stem to the passage d. To
close the valve the cap is screwed down and by bearing upon shoulder r of
stem closes the valve over orifice f.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. The herein described apparatus for use in the inflation by means of liquefied
carbonic acid of the tyres of velocipede and other vehicle wheels consisting
in the combination with a container for the gas, provided with means for the
attachment of an inflator tube, of a valve for controlling the supply of gas and
constituted by a membrane seated over the gas outlet and a pressure screw by
means of which the extent to which the valve opens under the gas pressure may
be determined, substantially as described with reference to Figure 1 of the
drawings.
2. The apparatus for use in the inflation by means of carbonic acid of the tyres
of vehicle wheels, consisting in the combination with a tube or cylinder for the
gas, provided with an attachment for the inflator tube, of means for controlling
the supply, consisting of a membrane, a valve seated internally over the gas
escape orifice and normally closed by the pressure of the gas, a screw regulated
abutment and a spring interposed between the same and the membrane and serving,
after a certain quantity of gas has passed through the outlet orifice, to permit
the valve to close and thus automatically cut off the supply, substantially as
described-with-reference-to-Figure 2 of the drawings.
3. The apparatus for use in inflating the tyres of vehicles by means of carbonic
acid, consisting in the combination with a container for the gas, constructed as
described of means for controlling the supply of gas consisting of a valve
applied to the gas outlet orifice and provided-with-a-perforated-and-shouldered
stem and combined with a screw cap by means of which the valve may be closed
or permitted to open as desired, substantially as described with reference to
Figure 3 of the drawings.
a
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.