Improvements in Packings for Man-hole Doors, Tubes, Cylinders, or the like.
Year: 1890

page_text: Date of Application, 14th Oct., 1890
Complete Specification Left, 10th July, 1891-Accepted, 15th Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in Packings for Man-hole Doors, Tubes, Cylinders, or
the like.
A communication from abroad by GUSTAV ADOLPH, of Mayence, Grand Duchy
of Hesse, Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6 Bank Street,
Manchester, both in the County of Lancaster, and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention to be as follows
This invention has for its object a packing for man-hole doors, tubes, cylinders
or the like and comprises a suitable fabric such as cotton, hemp, silk, etcetera,
which may be made up into tubes or closed at one or both ends. These are stuffed
or packed with pulverized cement containing clay or argillaceous earth in certain
proportions as it is required to bind or make the joint quickly or slowly.
The cement may be used with an addition of saw-dust, sand or similar material.
This packing is laid some minutes before using in water and is then employed in
the same manner as the hemp packing which has been hitherto used for the same
purposes. The packing of this invention resists all pressure of air, gas, steam, and
water, and is believed to be better than all packings of hemp, red lead, rubber,
asbestos, etc., which have been used hitherto.
Dated the 13th day of October 1890.
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Packings for Man-hole Doors, Tubes, Cylinders, or
the like.
A communication from abroad by GUSTAV ADOLPH, of Mayence, Grand Duchy
of Hesse, Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, 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 has for its object a packing for manhole doors, tubes, cylinders or
the like and comprises a suitable fabric such as cotton, hemp, silk, etcetera, which
may be made up into tubes which may be closed at one or both ends. These are
stuffed or packed with pulverized cement containing clay or argillaceous earth in
certain proportions as it is required to bind or make the joint quickly or slowly,
and the tubes are formed into rings corresponding to the opening to be packeň.
The cement may be used with an addition of saw-dust, sand or similar material,
and there may be added soda water-glass in the form of powder whereby the
cement will lose its stiffness, become more plastic and afford more resistance to the
heat.
This packing is laid, some minutes before using, in water and is then employed
in the same manner as the hemp packing which has been hitherto used for the same
purposes. The packing of this invention resists all pressure of air, gas, steam and

page_text: water, and is believed to be better than all packings of hemp, red lead, rubber,
asbestos, etcetera, which have been used hitherto. The packing may be used in
connection with steam boilers of any pattern, in pump buckets, etcetera, and it can
also be used with great advantage in making tight the sockets or flanges of steam
or air pipes or water conduits.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. An improved packing for manhole doors, tubes, cylinders, or the like consisting
of tubes of cotton, hemp, silk or the like formed into rings and filled with pulverised
cement, substantially as and for the purpose herein set forth.
2. The employment of tubes of cotton, silk, hemp or other tissues for packing
purposes filled with pulverised cement with an addition of saw dust, sand, etcetera,
for the purpose herein set forth.
1001
WM. P. THOMPSON & Co.,
Agents for the Applicant.