Improvements in Sealing Cans or other Containing Vessels.
Year: 1892

page_text: Date of Application, 14th Oct., 1892
Complete Specification Left, 13th July, 1893-Accepted, 26th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Sealing Cans or other Containing Vessels.
We, ROBERT ALEXANDER SLOAN and JOHN EDWARD LLOYD BARNES,
Consulting Engineers of Castle Chambers, 26 Castle Street, Liverpool in the
County of Lancaster, do hereby declare the nature of this invention to be as
follows:-
This invention relates to sealing cans or other containing vessels, and particularly
to sealing cans in which the pressure is to be less or greater than that of the
atmosphere.
We provide each can with a short length of pipe of lead or other suitable
material which passes fluid-tight through one of the ends or through the side of
the can as may be most convenient; when the can is packed it is, with the
exception of the bore of the lead pipe, hermetically sealed and the portion of
the lead pipe which protrudes through the can is connected, preferably by means
of a rubber tube, to the pump which is used to exhaust or compress the air or
other gas in the can.
When the desired degree of pressure or rarefaction is obtained in the can, the
portion of the lead pipe just outside the can is compressed so that the bore of the
pipe is closed and the can thus completely sealed; the rubber tube is removed and
the lead pipe cut off just beyond the compressed portion, which for additional
security may be soldered over.
A strip of metal is fixed over the end of the pipe within the can so as to prevent
the material packed in the can from stopping up or being drawn into the pipe
during the process of exhaustion.
It will be seen that our invention is also applicable in cases where the cans
require to be filled with a gas other than air.
Dated this Thirteenth day of October 1800
SLOAN & LLOYD BARNES,
Castle Chambers, 26, Castle Street, Liverpool,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Sealing Cans or other Containing Vessels.
We, ROBERT ALEXANDER SLOAN and JOHN EDWARD LLOYD BARNES,
Consulting Engineers, of Castle Chambers, 26 Castle Street, Liverpool in the
County of Lancaster, 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 sealing cans or other containing vessels, and particularly
to sealing cans in which the pressure is to be less or greater than that of the
atmosphere.
In the accompanying drawings which serve to illustrate our invention,
Fig. I is a sectional elevation of a can fitted with a short length of lead or the
like pipe before being operated upon according to our invention,
Fig. II shows the can during the operation of sealing and
Fig. III shows the can after the operation is completed.
Throughout the drawings the same parts are indicated by the same reference

page_text: We provide each can 1 with a short length of pipe 2 (see Fig. 1) made of lead
or the like material which passes fluid-tight through one of the ends or through the
side of the can as may be most convenient; when the can is packed it is, with the
exception of the bore of the lead pipe, hermetically sealed and the portion of
the pipe which protrudes through the can is connected, preferably by means of a
rubber tube 3 (see Fig. II) to the pump, or a receiver in communication therewith,
which is used to exhaust or compress the air or other gas in the can. The rubber
tube is preferably wired as at 6 when the pressure transmitted is less than that of
the atmosphere and may be externally wired when the pressure is greater than that
of the atmosphere.
When the desired degree of pressure or rarefaction is obtained in the can, the
portion of the pipe 2 just outside the can is compressed at 4 by plyers or other suitable
means so that the bore of the pipe is closed fluid-tight and the can thus completely
sealed; the rubber tube 3 is then removed and the pipe 2 cut off just beyond the
compressed portion as shown by the dotted line a, a, in Fig. II. For additional
security the portion of the pipe remaining affixed to the can may be soldered over
as at 7 (Fig. III).
A strip of metal 5 is fixed over the end of the pipe 2 within the can so as to
prevent the material packed in the can from stopping up or being drawn into the
pipe during the process of exhaustion.
It will be seen that our invention is also applicable in cases where the cans require
to be filled with a gas other than air.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improved method of sealing cans, substantially as described and
illustrated.
SLOAN & LLOYD BARNES,
Castle Chambers, 26, Castle Street, Liverpool,
Agents for the Applicants.