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

page_text: Date of Application, 21st Oct., 1897
Complete Specification Left, 15th July, 1898-Accepted, 27th Aug., 1898
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyres for Cycles and
other Vehicles.
I, ALEXANDER BLACK, of 456, Victoria Road, Crosshill, Glasgow, in the
County of Lanark, Scotland, Pneumatic Tyre Manufacturer, do hereby declare
the nature of this invention to be as follows:
-
The object of this invention is to prevent the nipple, which connects the
ends of the wire which holds the tyre to the rim, from unscrewing altogether
when the tyre is being detached.
In carrying out this invention, I place a spring at the end of the nipple, with
its end protruding through the nipple; on the end of the wire I cut a groove,
and shape it so that when the nipple is almost unscrewed, the end of the
spring will engage in the groove and prevent it from unscrewing further. The
groove is so shaped that the nipple is free to be screwed up again.
This principle may be reversed by fitting the spring to the end of the wire
and making the groove in the nipple.
According to another modification, I fit a projection near the end of the wire
and make the end of the nipple less in circumference than the projection.
As the projection is within the nipple, the latter will be prevented from un-
screwing when its end reaches the projection.
I may fit a projection on each end of the wire, and place a bridge piece over
the nipple, so that the nipple can only be unscrewed until the projections engage
on the ends of the bridge piece.
000
1
1002
Improvements in and relating to Pneumatic Tyres for Cycles and
other Vehicles.
I, ALEXANDER BLACK, Sometime of 450, Victoria Road, now of 90, Forth
Street, Pollokshields, Glasgow, in the County of Lanark, Scotland, Tyre Manu-
facturer, 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:-
The object of this invention is to prevent the nipple which connects the ends
of the wire which holds the tyre to the rim from unscrewing altogether when
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page_text: the tyre is being detached. In order that the various modifications may be
properly understood, they are illustrated by the accompanying drawings.
In carrying out this invention, I place a spring at the end of the nipple, with
its ends protruding through the nipple B, Fig. 1. On the end of the wire I cut
a groove, and shape it so that when the nipple is almost unscrewed the end of
the spring will engage in the groove and prevent it from unscrewing further.
A Fig. 1 The groove is so shaped that the nipple is free to be screwed up
again. A 1 shows an end view of the wire with the groove cut in it; B¹ shows
an end view of the spring detached from the nipple.
This principle may be reversed by fitting the spring on the end of the wire
and making the groove in the nipple.
According to another modification I fit a projection near the end of the
wire (A Fig. 2), and make the end of the nipple less in circumference than the
projection B Fig. 2.) The end of the nipple is contracted after it has been
screwed over the projection (Fig. 2).
Instead of contracting the end of the nipple, a piece of tube can be used as
shewn by Fig. 3. With the tube as shewn, after the nipple is screwed up, the
end of the tube next to the nipple is slipped over the nipple, and the spring
parte, Fig. 3 goes into the recess B, and the wire is therefore prevented from
slipping back. I may fit a projection on each end of the wire and place a bridge
piece over the nipple so that the nipple can only be unscrewed until the projec-
tions engage on the ends of the bridge-piece (Fig. 4).
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I wish it
particularly understood that I do not limit myself to the precise details of con-
struction described and illustrated, but hold myself free to make such alterations
as conform with the scope of my invention and I declare that what I claim
is:
:-
(1) The mode of preventing the nipple of the wire of a pneumatic tyre from
unscrewing, substantially as described and illustrated by Fig. 1.
(2) The mode of preventing the nipple of the wire of a pneumatic tyre from
unscrewing, substantially as described and illustrated by Fig. 2.
(3) The mode of preventing the nipple of the wire of a pneumatic tyre from
unscrewing, substantially as described and illustrated by Fig. 3.
(4) The mode of preventing the nipple of the wire of a pneumatic tyre from
unscrewing, substantially as described and illustrated by Fig. 4.
T
1
CTI
1000