Improvements in Inflators for Pneumatic Tyres and the like.
Year: 1899

page_text: Date of Application, 28th Sept., 1899-Accepted, 11th Nov., 1899
COMPLETE SPECIFICATION.
Improvements in Inflators for Pneumatic Tyres and the like.
I, JOILANN GOTTFried Gottwald, of Seestrasse 1, Dresden, in the Kingdom of
Saxony, Banker, 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 relates to an apparatus or device for inflating pneumatic tyres
and the like. By its means, the tyres may be inflated either by means of air or
gases under compression, as for example by means of compressed carbon dioxide,
or by means of an air-pump of the usual construction which is combined with a
chamber for the compressed air or gas, the chamber serving also either as a
cylinder or as a piston for the air-pump.
I will describe my said invention with reference to the accompanying drawings
in which:-
:―
Figure 1 represents a longitudinal section of the apparatus in which the
chamber for the compressed air or gas forms the cylinder;
Figure 2, an elevation of the inflator shewn in Figure 1, drawn to a smaller
scale, and having its handle arranged for work.
Figure 3, shews a longitudinal section of the apparatus with the compressed
air or gas chamber forming the piston for the air-pump, the chamber being out
of use.
Figure 4 shews the same apparatus partly in elevation and partly in section,
with the compressed air or gas chamber in position for use.
a, represents the cylinder which, as shewn by Figure 1, forms an annular
chamber for the compressed air or gas, or for liquid carbon dioxide or the like.
dis the outlet from the apparatus, controlled by the valve h. The apparatus
may be connected with the tyre valve by means of the internally screwed outlet y.
Being thus connected, if the valve be opened, the compressed contents of the
chamber a will issue and inflate the tyre.
In cases where the compressed air or gas has been exhausted or it is not desired
to use the gas or air from the chamber, the tyre or the like may be inflated by
means of the air-pump. The piston is hollow and is constructed to contain
the handle f, which may be removed therefrom and fixed for use as indicated by
Figure 2. At the bottom of the chamber there is an elastic non-return valve i.
When the handle is fixed, the inflator may be worked in the usual manner.
The air compressed by the motion of the piston passes to the tyre through the
side nozzle and connection c.
In the modification represented by Figures 3 and 4, the piston b is utilised as
a chamber for the compressed air or gas, and is provided at its lower end with
a valve k, which controls the inlet and outlet of the fluid. The upper end of the
piston has attached to it an outer concentric shell m, by means of which the
piston can be worked and the tyre inflated, after releasing the valve h. If it be
desired to inflate the tyre by means of the compressed air or gas, the lower
screwed end of the piston b is screwed into the tapped central recess in the end
of the cylinder a, as indicated by Figure 4. In this position, the valve
.
has

page_text: been lifted from its seating, by means of the extension 7, and, on opening the
valve, the compressed air or gas will escape into and inflate the tyre.
A collar n may be arranged upon the lower part of the cylinder a in such a
manner that it may be screwed or adjusted upwards or downwards, so as to limit
or extend the possible travel of the sleeve m."
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. The combination and arrangement with an inflator for pneumatic tyres and
the like, of an air-pump and a chamber to contain compressed air or gas; sub-
stantially as hereinbefore described and as illustrated by the accompanying
drawings.
2. As new articles of manufacture, inflators for pneumatic tyres and the like,
constructed arranged and operated substantially as hereinbefore described and
as illustrated by the accompanying drawings.
Dated this 20th day of September A.D. 1899.
W. E. HEYS & SON,
Agents for the Applicant.
W. E. HEYS & SON,
Agents for the Applicant.