Improvements in or connected with Man-hole and other Packing Rings.
Year: 1891

page_text: Date of Application, 9th July, 1891
Complete Specification Left, 5th Apr., 1892-Accepted, 7th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Man-hole and other
Packing Rings.
I, GEORGE WILLIAM TAYLOR, of 19, Breakspears Road, St. John's in the
County of London, India Rubber Manufacturer, do hereby declare the nature of
this invention :-
My invention relates to packing rings, and especially to such as are used in
connection with the man-hole covers of steam boilers, the object of the said inven-
tion being to provide means whereby the liability of such rings being injured by
the contact of steam therewith will be reduced to a minimum.
According to my invention I place such rings in U-shaped metal sheaths which,
when the rings are in place, prevent the contact of steam therewith.
Dated the 9th day of July 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Man-hole and other
Packing Rings.
I, GEORGE WILLIAM TAYLOR, of 19, Breakspears Road, St. John's, in the
County of London, India-rubber Manufacturer, do hereby declare the nature of
this invention and in what manner the same is to bo performed, to be particularly
described and ascertained in and by the following statement:-
My invention relates to packing-rings, and especially to such as are used in
connection with the man-hole covers of steam boilers, the object of the said inven-
tion being to provide means whereby the liability of such rings being injured by
the contact of steam or water therewith will be reduced to a minimum.
According to my invention I place such rings in U-shaped metal sheaths which,
when the rings are in place, prevent the contact of steam therewith..
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is an elevation of a portion of a packing-ring having my metal sheath
applied thereto :
Figure 2 is a plan of the same; and,
Figure 3 is a section :
Figures 4, 5 and 6 are views similar to Figures 1, 2 and 3 respectively illustrating.
a modification of my invention; and,
Figures 7, 8 and 9 are similar views.illustrating another modification.
a indicates the ordinary packing-ring, and indicates my metal sheath which,
when the packing-ring is in position, covers that part of the said ring against which
the steam could act.
The sheath shewn in Figures 1 to 3 is represented as being quite plain, and in
this case the said sheath is only adapted for application to the exact size of
packing-ring for which it is made. The form of sheath shewn in Figures 4, 5
and 6, however, is onpable of being bent more or less to correspond with the
contour of the packing-ring to which it is applied, and for this purpose it is
represented as having a number of slits forming a series of flaps c, c which, when
the sheath is applied, overlap each other as shown.
In the modification of my invention shewn in Figures 7, 8 and 9 the sheath is

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corrugated on the inner edges in order to enable it to be more or less bent to
conform to the contour of the ring to which it is applied.
After my sheath has been applied to the packing-ring the ends thereof are
preferably soldered or otherwise.connected together.in.order to prevent the escape
of steain or water at the joint.
In practice the unevenness caused by the overlapping of the flaps, as shown in
Figures 4 to 6, or by the corrugations, as shewn in Figures 7 to 9, offers no
disadvantage.as, owing to the great..pressure that is applied. when making-a joint,
the sheath will be forced into the packing-ring and flattened to such an extent as
to prevent the escape of steam or water.
.Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I deolare (thats what 'I
claim is :-
1. The combination with a man-hole or other packing-ring of a sheath adapted
to protect that part of the ring which would otherwise be exposed to the interior
of the boiler, substantially as described.
2. The improvements in or connected with packing-rings hereinbefore described
and illustrated in the accompanying drawing.
GF REDFERN & Co.,
4, South Street; Finsbury, London, Agents for the Applicant.