Improved Receptacle for Gases in a Liquid State for Inflating Pneumatic Wheel Tyres and similar purposes.
Year: 1897

page_text: Date of Application, 1st Mar., 1897-Accepted, 22nd May, 1897
COMPLETE SPECIFICATION.
Improved Receptacle for Gases in a Liquid State for Inflating
Pneumatic Wheel Tyres and similar purposes.
I, BARON ALEXANDER VON DER ROPP, of Würzburgstrasse No. 21, Berlin,
Germany, 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 a receptacle for containing gases in a liquid condition,
for the purpose of inflating pneumatic wheel tyres and the like and which, in
consequence of the use of methyl-chloride or similar liquid gases with high
boiling point, enables the refilling of the vessel to be readily effected by anyone, by
means of a specially arranged filling screw plug.
In receptacles for liquid gases heretofore employed the disadvantage arose that
after the discharge of the gases therefrom, they could not be refilled without special
appliances, and consequently they had to be sent to factories for this purpose, in
which such special appliances existed.
This difficulty in re-charging caused not only trouble and expense, but rendered
the use of the system for travelling in remote districts impracticable. In con-
sequence hereof such receptacles 'could not be used for charging pneumatic tyres,
because their considerable weight prevented several thereof being carried on a
velocipede.
By means of the present invention every one is enabled to refill the receptacles
with liquid gas without difficulty.
The construction of the receptacle for the above purpose is shewn in two
modifications on the accompanying drawing.
The receptacle a made of suitable strong material such as metal, vulcanite, or the
like, is provided with a discharge valve b, through which any required quantity of
gas can be charged into a pneumatic tyre, &c.
In addition, the receptacle is provided at a suitable point, preferably at the
bottom, with an opening b¹ which can be closed in a gas tight manner by a screw
plug c.
For refilling the arrangement shewn at Figure 1, in which the opening 61 is
comparatively small, this may be effected by first cooling the receptacle a and a
sealed glass vessel containing the liquid gas as far as possible in cold water or
preferably in a refrigerating mixture such as ice and salt.
The screw plug c is then removed and the sealed end of the glass vessel having
been broken, its contents are allowed to flow through the opening b¹ into the
receptacle a, after which the screw stopper is fixed in gas-tight again. The loss
of gas during this operation is so small that it need not be considered, because
gases with a high boiling point such as chloride of methyl are used.
In the construction shewn at Figure 2 the opening 6¹ is made so large that the
glass vessel d containing the liquid gas can be introduced into the metal
receptacle a. On closing the screw plug c, the glass vessel can be readily broken
by shaking.
From the above it will be evident that the charging of the receptacle with
chloride of methyl or the like according to my invention can be effected by any
one without difficulty and without special appliances.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
-
A receptacle for liquid gases for filling pneumatic tyres and other purposes
containing in addition to the discharging valve, a special closeable charging
opening, through which a sealed glass vessel containing the gas is introduced into
the interior of the receptacle and is subsequently broken therein by concussion,
substantially as described.
ABEL & IMRAY,
Agents for the Applicant.