Improvements in Engine Packings.
Year: 1888

page_text: Date of Application, 13th Dec., 1888
Complete Specification Left, 13th Sept., 1889-Accepted, 19th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Engine Packings.
We,, JOSEPH MOSELEY Manufacturer, and BENJAMIN BLUNDSTONE, Manager, both
of the Chapelfield Works Manchester in the County of Lancaster, do hereby declare
the nature of this invention to be as follows:
-
This Invention relates to engine packings and these Improvements consist in
the construction combination and arrangement of the packing and its constituent
elements.
A packing constructed according to these Improvements consists essentially of
layers of spiral metallic tapes and of woven fabric. The metallic tapos are
conveniently made by cutting wire gauze into strips of the desired width; the
fabric may be of vegetable fibre or of asbestos or of both vegetable and asbestos.
The packing may be made to any desired shape or cross section, but in any case it
is so constructed that in the finished packing the metallic tapes are in the packing in
a spiral direction.
Dated this 12th day of December A.D. 1888.
WILLIAM E. HEYS,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Engine-packings.
We, JOSEPH MOSELEY, Manufacturer, and BENJAMIN BLUNDSTONE, Manager, both
of the Chapelfield Works Ardwick Manchester, in the County of Lancaster, 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 relates to engine packings and these Improvements consist in
the construction, combination and arrangement of the packing and its constituent
elements.
A packing constructed according to this Invention consists essentially of layers of
spiral metallic tapes and of woven fabric. The metallic tapes are conveniently made
by cutting wire gauze into strips of the desired width; the fabric may be of asbestos
or of vegetable fibre, or of both asbestos and vegetable fibre.
The packing may be made to any desired shape or cross section, but in any case it
is so constructed that in the finished packing the metallic tapes or their equivalent are
in the packing in a spiral direction.
In order that our Invention may be better understood we have appended a sheet of
drawings hereto and will hereinafter refer to the various figures thereon in each of
which similar parts are denoted by similar letters.
Fig. 1 represents a plain sheet of metal gauze; Fig. 2 represents the same
sheet of gauze after it has been cut as hereinafter described. Figs. 3, 4, 5, 6, 7,
and 8 represent various forms of the packing constructed according to this Invention.
In each of the Figures in which the parts are represented, A is the metallic
gauze or wire cloth, B is the outer layer or covering of textile fabric, C is the
layer or layers of textile fabrics, and D is a strip or core of indiarubber or similar
material.
In carrying our Invention into practical effect, we may make the packing up in any
'

page_text: of the well known forms as hereinafter described with reference to the drawings, or
we may make it up in any other convenient and suitable form.
The metallic gauze is first prepared by cutting it into narrow strips or tapes,
and we prefer not to make the incisions across the whole width of the gauze but
only to within a short distance from the selvedge or edge so that the strips or
tapes may be held together by the unsevered portion or portions. By this means
all the tapes cut out of a single piece of the gauze may be handled at once, and the
trouble of separately handling each individual strip or tape is avoided.
In preparing the gauze for the manufacture of the packing we prefer to make the
cuts diagonally across the piece or in "bias" as indicated in Fig. 2. From this
method of cutting up the gauze it follows that in the strips or tapes the warp and
weft will lie in diagonal directions as shewn in Fig. 2 where the warp and weft are
indicated by the horizontal and vertical dotted lines.
In the packing represented in Fig. 3, a piece of the prepared metallic gauze,
(Fig. 2) is doubled with a similar piece of a suitable textile fabric and the two
thicknesses are then folded and refolded until the desired dimension is obtained.
The packing is then covered with a plain or single texture piece of the textile
fabric.
In the packing shewn in Fig. 4 alternate sheets of textile fabric and of the prepared
wire gauze are cemented together in horizontal layers. We prefer to cut the prepared
gauze and the textile fabric separately into strips of the desired width and then to
cement these together in alternate layers. Alternatively, sheets of the prepared gauze
and of the textile fabric may be cemented together and the manifold material be
thereafter cut into strips of the desired width, but the act of cutting the manifold
material is difficult and does not give good results. A strip of indiarubber or similar
material is cemented along one side of the manifold strip and a covering of the textile
fabric is cemented over three sides of the packing so as to leave one edge of the
manifold strip exposed as shewn.
In constructing the packing as shewn in Fig. 5 we may first double a sheet of
prepared gauze and a sheet of the textile fabric and roll them together as shewn in
Fig. 8. This roll is then by means of suitable dies or other known devices, compressed
into a square or prismatic form and the packing is completed as hereinbefore described
with reference to Fig. 4. In this form of the packing (Fig. 5) the prepared gauze or
wire cloth forms the outside of the roll and when therefore the packing is finished,
the prepared gauze is exposed at one side of the packing as indicated at A in the
Figure. The packing illustrated in Fig. 6 resembles that shewn in Fig. 3 except that
a strip of india rubber D is included therein.
The circular packings Figs. 7 and 8 are made by rolling doubled sheets of the
prepared gauze and textile fabric together. As indicated in Fig. 7 a core of india-
rubber is included.
The prepared gauze and the textile fabric may be doubled and secured together
by cement and by other suitable means in a similar manner to that at present
adopted for securing the different layers together in similar packings of ordinary
construction.
Owing to the peculiar construction of packings manufactured as hereinbefore
described, they are very pliable and durable, and they are also more convenient in
use than packings with wire cloth arranged therein in the ordinary manner, as plain
sheets or otherwise..
The forms of the packings illustrated by the accompanying drawings are well known
and we do not therefore claim them apart from the combination and arrangement
therewith of the prepared metallic gauze.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim is:-
In engine packings; the combination and arrangement of a layer or layers of

page_text: textile fabric with a layer or layers of strips or tapes of metallic gauze, the strips or
tapes being arranged in the packing in a spiral or diagonal direction; substantially
as described with reference to the accompanying drawings.
Dated this 12th day of September A.D. 1889
WILLIAM E. HEYS,
Agent for the Applicants.