Improvements in and relating to Valves for Pneumatic Tyres for Cycles and other Vehicles.
Year: 1897

page_text: Date of Application, 5th Nov., 1897
Complete Specification Left, 4th Aug., 1898-Accepted, 17th Sept., 1898
PROTIONAL DIECIFICATION.
Improvements in and relating to Valves for Pneumatic Tyres for
Cycles and other Vehicles.
I, ALEXANDER BLACK, of 456, Victoria Road, Crosshill, Glasgow, in the County
of Lanark, Scotland, Tyre Manufacturer, do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to prevent the nut, which tightens the joint of
the connection between the air-tube and the valve, from slackening.
This invention is applicable to a valve, the stem of which has one or more flat
sides to prevent it turning in the rim.
In carrying out this invention, I shape a piece of thin metal to go over the nut,
and make a hole in it the same shape as the valve stem.
Instead of having the metal going over the sides of the nut, I may make a
washer the same shape as the nut, and having a hole in it the same shape as the
valve stem. A pin or projection fitted to the washer and going into a hole in the
nut will prevent the latter from slackening.
According to a modification, when an elongated washer is used, I may make a
recess in it to fit the nut, and fit it on after the nut is tightened.
Dated this 4th day of November 1897.
Improvements in and relating to Valves for Pneumatic Tyres for
Cycles and other Vehicles.
I, ALEX. BLACK, sometime of 456, Victoria Road, Crosshill, now of 90, Forth
Street, Pollokshields, Glasgow, in the County of Lanark, Tyre 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:L
The object of this invention is to prevent the nut which tightens the joint of
the connection between the air-tube and the valve from slackening. The action
of fixing and detaching an inflator, and the tightening or locking of the valve
when the inflator has been removed, have a tendency to slacken the nut, as also
has the elasticity of the rubber. This invention is applicable to any valve the
stem of which has one or more flat sides, to prevent it turning in the rin

page_text: In order that the various modifications may be properly understood, they are
illustrated by the accompanying drawings.
In carrying out this invention, I shape a piece of thin metal to go over the
nut, A & A 1, Fig. 1, and make a hole in it the same shape as the valve stem, B,
Fig. 1.
A 1, Fig. 1 is a modification of A, Fig. 1, the nut being covered all the
way round, instead of two sides as shown by A, Fig. 1.
Instead of having the metal going over the sides of the nut, I may make a
washer the same shape as the nut, and having a hole in it the same shape as the
valve stem, A, Fig. 2. A pin or projection is fitted to the washer, B, Fig. 2, and
when fitted into the hole, C, Fig. 2, will prevent the nut from slackening.
According to another modification, the elongated washer has a recess in it to
fit the nut, A, Fig. 3, and when fitted, after the nut is tightened, will prevent
it from slackening.
Having now described and ascertained the nature of my said invention and
in what manner the same is to be performed, I wish it to be particularly under-
stood that I do not limit myself to the precise details of construction, but hold
myself free to make such alteration as conform with the scope of my invention,
and I declare that what I claim is:-
1. The mode of preventing the nut of the valve of a pneumatic tyre from
unscrewing, substantially as described and illustrated by Fig. 1.
2. The mode of preventing the nut of the valve of a pneumatic tyre from
unscrewing, substantially as described and illustrated by Fig. 2.
3. The mode of preventing the nut of the valve of a pneumatic tyre from
unscrewing, substantially as described and illustrated by Fig. 3.
Dated this Third day of August 1898.
ALEX. BLACK.