Improved Closing Device for Receptacles Containing Dangerous Substances.
Year: 1899

page_text: Date of Application, 1st May, 1899
Complete Specification Left, 26th Jan., 1900-Accepted, 14th Apr., 1900
Date of Application, 1st May, 1899
Complete Specification Left, 26th Jan., 1900-Accepted, 14th Apr., 1900
PROVISIONAL SPECIFICATION.
Improved Closing Device for Receptacles Containing Dangerous
Substances.
I, FRITZ PIERSIG, of 10, Plan Ufer, Berlin, in the Kingdom of Prussia, German
Empire, Merchant, do hereby declare the nature of this invention to be as
follows:-
The present invention relates to a closing device by means of which receptacles
can be closed so as to be completely air- and watertight.
My invention is advantageously employed with tanks for keeping and trans-
porting dangerous substances, as for instance calcium-carbide, natrium-metallicum
and other similar substances.
The water and air-tight joint according to my invention is effected by an
elastic joint-ring inserted into an annular recess in the underside of the receptacle
cover; said elastic joint together with the cover itself being pressed against the
top of the receptacle by means of a screw. A clamping device, consisting of
three arms is arranged within the receptacle, so as to press against the inside of
the top of the receptacle when the beforementioned screw is fixed, thus increasing
the tightening effect.
My invention will be the better understood by reference to the accompanying
drawing, in which:
Figure represents a vertical section through my improved closing mechanism,
and
Figure 2 illustrates partly a plan view of the cover and partly a plan view of
the clamping device.
A represents the cover having an annular recess adapted to take a joint ring B
consisting of elastic material as for instance caoutchouc or leather. The recess
in the cover A is so formed that the joint ring B adheres to the same even when
the cover itself is removed from the receptacle. The top part of the receptacle
is provided with an annular recess into which the elastic ring B is pressed.
Underneath the cover A and inside the top wall of the receptacle to be closed a
clamping device consisting of three arms is arranged and a screw C is passed
through the cover A as well as through the clamping device D. When now the
screw C is fixed, the cover A is pressed against the top wall of the receptacle
and the elastic ring effects a tight joint. At the same time the clamping
device is pressed against the top wall of the receptacle from underneath thus
An accidental displacement of
increasing the tightening effect of the cover.
the clamp is prevented by a bolt E suitably arranged on the cover A and
preventing the clamp device D from being displaced. The clamping device
consists of three arms whereby its easy introduction into the receptacle is possible
and the pressure against the receptacle to be closed is rendered uniform.
The cover A can easily he raised by unscrewing the screw C and at the same
time the clamping device D may be taken out of the receptacle.
In order to prevent the complete removal of the screw C from the device, a
Din 1 is passed through the extremity of the same.

page_text: The closing device may be so constructed, that the upper part does not project
at all or only projects a little above the top wall of the receptacle to be closed,
thereby the cover is protected against injuries. If for instance the receptacle has
to be employed for exporting dangerous substances, a cap can be arranged
above the cover, and thus any danger of the substance coming into contact with
the outer air is obvinted. I is an eye for attaching the cover by a sealed cord to
the receptacle.
The cover as well as the clamping device may consist of any suitable material
and the form of the same may be as convenient for the special cases.
1000 .M تسلسلی اسنس
JENSEN & SON.
77. Chancery Lane, London, W.C., Patent Agents.
Improved Closing Device for Receptacles Containing Dangerous
Substances.
1. FRITZ PIERSI, of 10. Plan Ufer, Berlin. in the Kingdom of Prussia, German
Empire, Merchant, 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 present invention relates to a closing device by means of which receptacles
can be closed so as to be completely air and watertight.
My invention is advantageously employed with receptacles, for keeping and
transporting dangerous substances, as for instance calcium-carbide." metallic
sodium and other similar substances.
The water and ir-tight joint according to my invention is effected by an
elastic joint-ring inserted into an annular recess in the underside of the receptacle
cover; said elastic joint together with the cover itself being pressed against the
top of the receptacle by menus of a screw. A clamping device. consisting of
three arms is arranged within the receptacle, so as to press against the inside of
the top of the receptacle when the beforementioned screw is fixed, thus increasing
the tightening effect.
The closing device for receptacles hitherto employed is arranged in such a
manner that the cover of the latter is pressed down by means of limbs or shackles
arranged on the outside of the receptacle to be closed up. The same require
mostly particular means by which they hold the cover, as noses and hooks,
which project in the same manner as the shackles from the surface of the bottom
of the receptacles. This latter fitted with such kind of a closing device is
inappropriate for the transport and for the packing, as the parts forming the
hermetical closing device could very easily get damaged and an accident could
happen.
To prevent this use the new closing device as hereinafter specified.
My invention will be the better understood with reference to the drawing filed
with the Provisional Specification, in which:
and
Figure 1 represents a vertical section through my improved closing mechanism,
Figure 2 illustrates partly a plan view of the cover and partly a plan view of
the clamping device.
A represents the cover having an annular recess adapted to take a joint ring B
consisting of elastic material, as for instance caoutchouc ar leather. The recess
in the cover A is so formed that the joint ring Badheres to the same even when

page_text: the cover itself is removed from the receptacle. The top part of the receptacle
is provided with an annular recess into which the elastic ring B is pressed.
Underneath the cover A and inside the top wall of the receptacle to be closed a
clamping device consisting of three arms is arranged and a screw C is passed
through the cover A as well as through the clamping device D being tightened
by an elastic ring F. When now the screw C is fixed, the cover A is pressed
against the top wall of the receptacle and the elastic ring effects a tight joint.
At the same time the clamping device D is pressed against the top wall of the
receptacle from underneath, thus increasing the tightening effect of the cover.
An accidental displacement of the clamp D is prevented by a bolt E suitably
arranged on the cover A and preventing the clamp device 1 from being displaced.
The clamping device consists of three arms, whereby its easy introduction
into the receptacle is possible and the pressure against the receptacle to be
closed is rendered uniform.
The cover A can easily be raised by unscrewing the screw C and at the same
time the clamping device D may be taken out of the receptacle.
In order to prevent the complete removal of the screw C from the device, a
pin I is passed through the extremity of the same.
The closing device may be so constructed, that the upper part does not project
at all or only projects a little above the top wall of the receptacle to be closed,
thereby the cover is protected against injuries. If for instance the receptacle has
to be employed for exporting dangerous substances, a cap can be arranged
above the cover, and thus any danger of the substance coming into contact with
the outer air is obviated. H is an eye for attaching the cover by a sealed cord to
the receptacle.
The cover as well as the clamping device may consist of any suitable material
and the form of the same may be as convenient for the special cases.
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
1 claim is
An improved closing device consisting of a three-armed clamp arranged inside
the receptacle to be closed and of a cover pressed onto the same by a screw
adapted to fix the cover and the clamp, substantially and for the purpose as
described.
Dated this 26th day of January 1900.