Improvements in and relating to Flexible Packings for Stuffing- boxes, Flanges, and the like.
Year: 1895

page_text: Date of Application, 23rd May, 1895
Complete Specification Left, 17th Feb., 1896-Accepted, 29th Mar., 1898.
PROVISIONAL SPECIFICATION.
Improvements in and relating to Flexible Packings for Stuffing-
boxes, Flanges, and the like.
I, ALFRED CALMON, of No. 4, Moorweidenstrasse in the City of Hamburg, in the
German Empire, Manufacturer, do hereby declare the nature of this invention to be
as follows:
The flexible packings forming the object of the present invention are composed of
a core or filler of threads, yarn or wire and a twisted or plaited cover. The filler is
conveniently made of cotton, hemp, jute, asbestos or like fibre, or of soft metallic
wires. The fibres or wires may be laid together or plaited, twisted or braided with
each other.
The outer cover, is to be braided or it may form a tress-work of, wires of a soft
metal, as for example an alloy of antimony, lead and tin. Under the outer cover a
second tresswork, preferably of fibrous material, may, be provided, by which the
threads and the like of the filler are held together in the form of a cord without; the
aid of the outer metallic cover, so as to protect the filler against. injury, by the said
outer cover. Whenever it is expedient, the filler may be provided with a core made
of talc, graphite, asbestos-powder or the like.
A packing cord made according to my said invention is particularly applicable for
packing piston rod stuffing-boxes, in which case the cord may be wound around the
piston rod in the form of a coil. The outer metallic tresswork of such a packing is
not only sufficiently resistant to injuries from the outside but in consequence of its
own softness and the yielding nature of its core or filler, the packing cord is also
flexible and elastic to such an extent, that it tightly fits to the walls of the stuffing
box as well as to the circumference of the piston rod, without injuring the latter.
From the foregoing it will be understood that my improved packing cord combines
the advantages of the packing cords made of fibrous material and the solid metallic
packing rings hitherto in use without possessing their disadvantages.
Dated this 23rd day of May 1895.
PHILLIPS & LEIGH,
Agents for the Applicant.
Improvements in and relating to Flexible Packings for Stuffing-
boxes, Flanges, and the like.
1, ALFRED CALMON, of No. 4 Moorweidenstrasse, in the City of Hamburg, in the
German Empire, Manufacturer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to he particularly described and ascertained
in and by the following statement :-
:-
This invention relates to improvements in flexible packings and the object of the
improvements is to procure a packing or packing cord which combines the advantages
of the packing cords made of fibrous material and the solid metallic packing rings
hitherto in use, without possessing their disadvantages.

page_text: The invention consists, generally, in the construction and combination hereinafter
described and particularly pointed out in the claim.
Referring to the accompanying figures which are to be taken as part of this
Specification and read therewith :-
Figure 1 is a side elevation illustrating a packing made according to the present
invention.
Figure 2 is a section taken along the line 2-2 of Figure 1; while
Figure 3 is a section of a modification.
Similar letters refer to similar parts throughout the several views.
The improved flexible packing cord is mainly composed of a core or filling a of
thread, yarn, wire or the like; and of a twisted or plaited cover b. The filling a is
conveniently made of cotton, hemp, jute, asbestos or like fibre, or of soft metallic
wires.
The fibres or wires may be laid together, or plaited, twisted, or braided, with each
other.
The outer cover b is to be braided or it may form a tress-work of wires of a soft
metal, as for example, an alloy of antimony, lead and tin. Under the outer cover b,
a second tress-work c, preferably of fibrous material, may be provided, by which the
threads and the like of the filling a, are held together in the form of a cord without
the aid of the outer metallic cover b, so as to protect the filling a against injury by
the said outer cover. Whenever it is expedient, the filling a may be provided with
a core d (shewn in Figure 3) made of talc, graphite, asbestos-powder, red-lead, or
the like.
A packing cord made according to this invention, is particularly applicable for
packing piston rod stuffing-boxes, in which case the packing cord may be wound
around the piston rod in the form of a coil. The outer metallic tress-work of such
a packing offers not only sufficient resistance to injuries from the outside, but in
consequence of its own softness and the yielding nature of its core or filling a, the
packing cord is also flexible and elastic to such an extent, that it tightly fits to the
walls of the stuffing-box as well as to the circumference of the piston rod, without
injuring the latter.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
A packing cord consisting of a bundle of threads, yarn, or other fibrous material
with or without a core of granular or pulverulent material, both extremely flexible,
a covering of braided, intertwined, or interlaced fibrous material, also extremely
flexible; and an armour or sheathing of interwoven, intertwined, or braided wire,
substantially as and for the purpose set forth.
•
Dated this 17th day of February 1896.
PHILLIPS & LEIGH,
No. 22 Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.