IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR STUFFING BOXES, PISTONS, AND OTHER SIMILAR PURPOSES
Year: 1877

page_text: LETTERS PATENT to Thomas Rowlinson Hinde, of Hanley, in the County of
Stafford, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF
PACKING FOR STUFFING BOXES, PISTONS, AND OTHER SIMILAR PURPOSES."
Scaled the 11th May 1877, and dated the 8th March 1877.
PROVISIONAL SPECIFICATION left by the said Thomas Rowlinson Hinde at
the Office of the Commissioners of Patents on the 8th March 1877.
THOMAS ROWLINSON HINDE, of Hanley, in the County of Stafford. " IMPROVE-
MENTS IN THE MANUFACTURE OF PACKING FOR STUFFING BOXES, PISTONS, AND
OTHER SIMILAR PURPOSES."
This Invention relates to improvements in the manufacture of a new description
of packing for the stuffing boxes, pistons, and other parts of steam and other engines,
pumps, machinery, and other similar purposes. For this purpose, according to my
improvements, an internal core of yarn, tallow, black lead, mica, and other lubri-
cating materials, as ordinarily used, is covered with a layer, skin, or outer covering,.
consisting of hemp, flax, jute, cotton, or other spun or unspun fibrous material, by a
spinning, lapping, or coating process, whereby I manufacture a novel and economical
packing not hitherto made or used.
The outer covering may be laid or lapped around the corc, either by hand or by
machinery, and for some purposes it is advantageous to apply a dressing of size and
mica, or French chalk. By this means the outer surface is protected from the
adhesion of dust, sand, or grit thereto prior to use.
I would remark that I do not claim as novel the use of the above-named materials
in the manufacture of packing, but I do claim the method of manufacturing the
same by hand or by machinery, and the improved packing thus produced, the
covering of which is not plaited or woven, therefore differing in this respect from
the packing now used.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Thomas Rowlinson Hinde in the Great Seal Patent Office on the 8th
September 1877.
"IMPROVE-
MENTS IN THE MANUFACTURE OF PACKING FOR STUFFING BOXES, PISTONS, AND
OTHER SIMILAR PURPOSES."
THOMAS ROWLINSON HINDE, of Hanley, in the County of Stafford.
This Invention relates to improvements in the manufacture of a new description
of packing for the stuffing boxes, pistons, and other parts of steam and other engines,
pumps, machinery, and other similar purposes. For this purpose, according to my
improvements, an internal core of yarn, tallow, black lead, mica, and other lubri
cating materials, as ordinarily used, is covered with a layer, skin, or outer covering,
consisting of hemp, flax, jute, cotton, or other spun or unspun fibrous material, by a
spinning, lapping, or coating process, whereby I manufacture a novel and economical
packing not hitherto made or used.
The outer covering may be laid or lapped around the core, either by hand or by
machinery, and for some purposes it is advantageous to apply a dressing of size and
mica, or French chalk. By this means the outer surface is protected from the
adhesion of dust, sand, or grit thereto prior to use.
And in order that my Invention may be clearly understood and readily carried into_
practice, I will proceed to describe the apparatus I employ for the manufacture of
packing in accordance with my improvements.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows an elevation of a furnace 1, over which a tank or bath 2 is placed,
containing a mixture of tallow, black lead, and mica, kopt in a fluid or semi fluid
state by the furnace below. Within the tank or bath 2 a series of bobbins 3 are
mounted in a frame, upon which the yarns or strands for forming the core of the
packing are wound. The series of yarns from the bobbins are conducted through
the spout or guide 4, and through openings in the revolving disc or grit 5, which
twists them together into a core, and as the same passes into and through the
delivering tube 7, it is covered by or wound around with a layer of hemp, jute,
flax, cotton, or other spun or unspun fibrous materials, or a mixture of such materials
from the bobbin 6.
Figures 3 and 4 show sections of this improved packing, which may be made
round or square, as shown, or of any other form. The packing thus manufactured
as it is delivered from the tube 7 may have a dressing of size, mica, or French chalk
applied thereto, if desired.
I would remark that I do not claim as novel the use of the above-named materials
in the manufacture of packing, but what I claim is, the improved method of manu-
facturing the same by hand or by machinery, and the improved packing thus
produced, substantially as herein described, the layer, skin, or outer covering of
which is not plaited or woven, therefore differing in this respect from the packing
now used.
In witness whereof, I, the said Thomas Rowlinson Hinde, have hereunto set my
hand and seal this Sixth day of September, in the year of our Lord One