of Manholes or other Openings in Boilers and like Vessels.
Year: 1885

page_text: of Manholes or other Openings in Boilers and like Vessels.
I JOSEPH SIMONIS Engineer in Schkenditz (Kingdom of Prussia) do hereby
declare the nature of my said Invention for "IMPROVEMENTS IN MEANS OR
APPARATUS FOR EFFECTING THE CLOSING OF MANHOLES OR OTHER OPENINGS IN
BOILERS AND LIKE VESSELS to be as follows:-
"
J
My Invention relates to a simple and convenient means for effecting the closure
and fastening of man-holes or other openings in boilers and like vessels subject to
internal pressure without necessity for intermediate material by utilizing the
opening to be closed itself for the purpose of effecting the tight closure by the lid
or cover-I make the opening to be closed of a conical formation with its larger
part inwards and I draw up into this a similarly formed cover or lid screwed
upwards by a screw passing through a saddle piece resting cross wise over the.
opening in the boiler and bearing on the metal at the outer side -If the appliance
be turned through an angle of 90° to its normal position the cover or lid can be
introduced into or taken out from the opening slantingly and quite conveniently..
Dated this 22nd day of June 1885
J. HENRY JOHNSON,
Agent for the said Joseph Simonis.

page_text: Improvements in Means or Apparatus for Effecting the Closing
of Manholes or other Openings in Boilers and like Vessels.
I JOSEPH SIMONIS Engineer in Schkenditz Kingdom of Prussia 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:
My Invention relates to a simple and convenient means for effecting the closure
and fastening of manholes or other, openings in boilers and like vessels subject to
internal pressure without necessity for intermediate material or packing. I make
the opening to be closed of a conical formation with its larger part inwards and
I draw up into this a similarly formed cover or lid screwed upwards by a screw
passing through a saddle piece. resting crosswise over the opening in the boiler and
bearing on the metal at the outer side If the appliance be turned through an
angle of 90° to its normal position-the cover or lid can' be introduced into. or. taken
out from the opening slantingly and quite conveniently.
And in order that my said. Invention may be fully understood I shall, now
proceed to describe the same and for that purpose shall refer to the several figures
on the annexed sheet of drawings the same letters of reference indicating
corresponding parts in all the figures.
Figure 1 of the accompanying drawings represents a transverse section and
figure 2a plan of a cover or closing apparatus constructed according to my
invention.
A is a lid or cover plate provided with conical or taper edges as indicated in the
drawing and fitting in a correspondingly shaped hole in the sides B of the boiler
or other vessel to which the invention is applied The lid or cover A is secured
in position by a screw C. passing through a saddle piece D placed crosswise over
the opening and affording a bearing for the nut E of the screw C."
In order to pass 'the lid or cover plate A through the hole in the plate B for the
purpose of placing the lid in position for closing the opening or removing it
therefrom the said cover plate is turned to an angle of about ninety degrees from
the position indicated in full lines in the drawing to the position shown by dotted
lines so as to cause the short axis a-b figure 2 of the cover plate to coincide with
the long axis c―d of the opening-By holding the plate in an inclined or slanting
position it can then be passed through the opening without difficulty and in some
cases without disconnecting it entirely from the saddle piece D. When the plate A
has thus been introduced into the interior of the boiler or vessel it is turned so
that the short axis of the plate coincides with the short axis of the opening and
it is then drawn forwards or outwards and screwed up by means of the nut E so
as to close the opening effectually as indicated in figure 1. In order to remove the
cover it is simply necessary to loosen the nut E and turn the plate as hereinbefore
directed.

page_text: This apparatus is especially suitable for closing openings in vessels having
corrugated curved or otherwise unevenly or irregularly formed sides.
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
For closing manholes or other openings in boilers and like vessels, conical or
taper cover plates arranged and operated substantially as hereinbefore described
and illustrated in the accompanying drawings,