An Improved Valve for Inflating Cycle Tyres.
Year: 1898

page_text: Date of Application, 8th Aug., 1898-Accepted, 17th Sept., 1898
COMPLETE SPECIFICATION.
An Improved Valve for Inflating Cycle Tyres.
We, FRITZ MAGNEY and ERNST PLANGE, both of Karnacksweg, Iserlohn, in the
German Empire, Manufacturers, 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:-
Many valves used for the inflating of tyres have the disadvantage that they are
not accessible in the case of leakage. In consequence it is necessary to remove
the tyre for the purpose, which causes a considerable amount of trouble.
The Specification of British Patent No. 28133, of 1897 describes a valve which
has not the above disadvantage, it being rendered accessible by means of a cap
screwed on from the outside. However, the valve described therein has the dis-
advantage that it consists mainly of an orifice provided with a disc of india-
rubber arranged in the cap, while the closing device, which is a metallic globe
is loose on a spiral spring, therefore it is very likely to fall out and be lost when
the cap is unscrewed.
This invention relates to a valve for inflating cycle tyres which has not the
beforementioned disadvantages. The valve seating is not situated within a
screwed-on cap but on the lower free end of a stuffing box placed loosely into a
valve casing which is connected firmly and rigidly by a collar through a cap with
the valve casing. In order to prevent the loss of the cone, ball or similar device
for closing the orifice, such closing device is wedged into a pan-shaped seating,
which though it is removable fits tightly into the internal diameter of a spiral so
that these three parts form a whole whereby the risk of the loss of the several
pieces is almost impossible.
In order that this invention may be the better understood, I now proceed to
describe a method of carrying the same into effect, reference being had to the
accompanying drawings and to the letters and figures marked thereon.
The
Into the free end of the valve casing a, provided on the tyre in the usual
manner, is inserted an exactly fitting nipple 6 having an air passage b¹.
nipple b rests, by means of a ring 2, on the rim of the valve casing and is
pressed on to the latter by the cover c¹ of the cap c screwed to the valve casing.
The part 63 of the nipple 6 which is carried upwards serves for screwing on the
tube of the pump and is provided in the usual manner with a protecting cap d.
The lower free end of the nipple 6 is formed as a valve seating 6 against which
is pressed the closing device f being under the influence of a spiral spring e. In
the present construction the closing device is preferably a cap or ball of india
rubber which is held by a small metal cup g so that it cannot be lost at the
opening of the valve. The pin-shaped continuation g¹ of the cup g fits tightly into
the upper end of
spiral spring e so that these parts form a whole and do not
separate without further action at the opening of the valve, in order to prevent
the loss of one or other of these small parts.

page_text: Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is:-
In valves for inflating tyres adapted to be opened from the outside, the arrange-
ment of a loose nipple 6 inserted from outside into the upper end of a valve
casing a with which it makes hermetical contact by means of a collar b² and the
cap e screwed to the casing a, the free outer end of the nipple b serving to screw
on the air pump, the lower inner end being formed as a valve seating * against
which acts a spring pressed closing device 7 held by a metal cup substantially as
described.
Dated this 8th Jove of August 1898