A NEW OR IMPROVED PACKING FOR THE JOINTS OF STEAM CYLINDERS AND FOR OTHER PACKING PURPOSES, WHICH MAY ALSO BE EMPLOYED FOR the MANUFACTURE OF DRIVING BELTS OR BANDS
Year: 1879

page_text: LETTERS PATENT to Thomas Callender and Alexander Callender, both of
Leith, in the County of Midlothian, North Britain, and Abraham Burbery
Herbert, of Edinburgh, in the said County of Midlothian, for the Invention
of "A NEW OR IMPROVED PACKING FOR THE JOINTS OF STEAM CYLINDERS AND
FOR OTHER PACKING PURPOSES, WHICH MAY ALSO BE EMPLOYED FOR the
MANUFACTURE OF DRIVING BELTS OR BANDS."
PROVISIONAL SPECIFICATION left by the said Thomas Callender, Alexander
Callender, & Abraham Burbery Herbert at the Office of the Commissioners
of Patents on the 26th May 1879.
THOMAS CALLENDER and ALEXANDER CALLENDER, both of Leith, in the County
of Midlothian, North Britain, and ABRAHAM BURBERY HERBERT, of Edinburgh,
in the said County of Midlothian. "A NEW OR IMPROVED PACKING FOR THE
JOINTS OF STEAM CYLINDERS AND FOR OTHER PACKING PURPOSES, WHICH MAY ALSO
BE EMPLOYED FOR THE MANUFACTURE OF DRIVING BELTS OR BANDS."
Our said Invention relates to a new or improved packing for the joints of steam
cylinders and for other packing purposes, which may also be employed for the
manufacture of driving belts or bands.
The said packing consists of a combination of parings of leather, hides, or skins
with tow or other similar fibrous material, they being beaten up together in a
pulping engine with or without a cementing or glutinous material, and afterwards
passed over a paper-making machine and coiled up layer upon layer at the end of
the said machine, or placed in moulds in the same manner as hand millboards are
now manufactured till it has acquired the requisite thickness. This material so
prepared is or may be then passed through rolls or otherwise submitted to pressure.
In working driving belts or bands the material is prepared as aforesaid, and as it
passes from the paper making machine it is folded upon itself in the direction of
its length the number of times requisite to give it the desired thickness and is then
submitted to pressure.
The lengths may be joined together to form bands by rivets
or otherwise, as is commonly practised in joining driving bands.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Callender, Alexander Callender, and Abraham Burbery
Herbert in the Great Seal Patent Office on the 22nd November 1879.
THOMAS CALLENDER and ALEXANDER CALLENDER, both of Leith, in the County
of Midlothian, North Britain, and ABRAHAM BURBERY HERBERT, of Edinburgh,
in the said County of Midlothian. "A NEW OR IMPROVED PACKING FOR THE
JOINTS OF STEAM CYLINDERS AND FOR OTHER PACKING PURPOSES, WHICH MAY ALSO
BE EMPLOYED FOR THE MANUFACTURE OF DRIVING BELTS OR BANDS."
Our said Invention relates to a new or improved packing for the joints of steam
cylinders and for other packing purposes, which may also be employed for the
manufacture of driving belts or bands.
The said packing consists of a combination of parings or shavings of leather,
bides, or skins with tow or other similar fibrous material, they being beaten up
together in a pulping engine with or without a cementing or glutinous material
and afterwards passed through a paper making machine and coiled up layer upon
layer on a roller or otherwise at the end of the said machine, or placed in moulds
in the same manner as hand millboard is now manufactured until the material has
acquired the requisite thickness. This material so prepared is or may be subse-
quently passed through rolls or otherwise submitted to pressure.
The drying
process we prefer to effect slowly either before or after pressure, or partially before
pressure, completing the drying after pressure. Washers or small packings may
be manufactured from the material made as aforesaid by cutting or punching
therefrom.
In making driving belts or bands the material is prepared as aforesaid, and as it
passes from the paper making machine it is folded upon itself in the direction of
its length the number of times requisite to give it the desired thickness, and is then
submitted to pressure and dried as aforesaid. The lengths may be joined together
to form bands by rivets or otherwise as is commonly practised in joining driving
belts or bands.
We do not limit ourselves to any precise proportions of the materials used as
aforesaid, but we have found that about equal quantities by bulk of parings of
leather, hides, or skins and fibrous materials give good results.
Having now described and particularly ascertained the nature of our said Inven-
tion, and the system, mode, or manner in or under which the same is or may be
used or practically carried into effect, we would observe in conclusion that what
we consider to be novel and original and therefore claim as the Invention secured
to us by the hereinbefore in part recited Leiters Patent is,―
The herein before described packing for the joints of steam cylinders and for
other packing purposes.
Also the use of the materials thereof as herein before
described in the manufacture of driving belts or bands.
In witness whereof, we, the said Thomas Callender, Alexander Callender, and
Abraham Burbery Herbert, have hereunto set our hands and seals, this
Thirteenth day of November, in the year of our Lord One thousand eight
hundred and seventy nine.
THOMAS CALLENDER. (L.S.)
ALEXR CALLENDER.
A. B. HERBERT.
(L.S.)
(L.S.)
19
THOMAS CALLENDER. (L.S.)
ALEXR CALLENDER.
A. B. HERBERT.
(L.S.)
(LS.)