Year: 1888

page_text: JAMES WALKER, of 4 America Square, Minories, London, county of Middlesex,
Engineer and Mill Furnisher, do hereby declare the nature of this invention to be as
follows
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The object of my invention is application of Packing to the ordinary Stop Cocks
for Steam, Water, and Gas, Nut and Washer, also Solid Bottom Cocks Following
partly on the lines of Letters Patent No 4996 granted 1880 to me, I simplify the
application of packing in grooves, by placing the packing into the same then force the
plug into the shell until the plug has a metallic bearing The grooves may be in the
plug or the shell with rounded throughway to prevent the Packing being torn out
The cocks are of ordinary make with a disc spring on the top in Solid Bottom Cocks,
and at the bottom in ordinary Plug Cocks The Packing is prepared of suitable
material for the different requirements of the Cocks The Packing is made so that by
forcing the plug into the shell it fills the grooves and has an elastic bearing
Dated that Jef Thun 1888

page_text: JAMES WALKER of 4 America Square Minories London, county of Middlesex
Engineer and Mill Furnisher do hereby declare the nature of my said invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement
The application of Packing to the ordinary stop cock for steam water and gas, nut
and washer also solid bottom cocks Following partly on the lines of Letters Patent
No 4996 granted to me in 1880 I simplify the application of Packing in the grooves
by placing the packing into the same, then force the plug into the shell until the plug
has metallic bearing The grooves may be in the Plug or the shell, with rounded
throughway to prevent the Packing being torn out The cocks are of ordinary make
with a disc spring on the top in solid bottom cocks, and at the bottom in ordinary
plug cocks
The Packing is prepared of suitable material for the different require-
ments of the Cocks The Packing is made so that by forcing the plug into the shell
it fills the grooves and his an elastic bearing
In order to give a more full understanding of my improvements reference is made
to the accompanying drawings and letters marked thereon
Fig 1 represents the section shell of an ordinary Plug Cock with the grooves
marked b
Fig 2 represents the section of an ordinary Plug Cock with the plug in its place
Dotted line, b, shows place for Packing, a, is a disc spring placed to keep the plug
hard on the Packing
Fig 3 is a cross section showing the Packing in the shell at 6
Fig 4 is a section of a solid bottom cock with the grooves for Packing marked b
Fig 5 is a section of a solid bottom cock with plug Dotted lines marked 6 shows
place for Packing, in this cock the disc spring is placed at the top to keep the plug
hard on the Packing
The Packing I use for these cocks is made as follows
1 take Asbestos fibre and we and plut them together into a cord and compress or
draw the said cord through a die, which compresses it, and makes it the exact size
required for the grooves I then cut the Packing into the required lengths, and place
it into the grooves after which I place the plug or a service plug into the shell and
press the Packing back into its place working the shell round at the same time, similar
to grinding in By this means the Packing is forced back into the shell of the cock
I may also use a Packing of vulcanised fibre, or, ebonite India Rubber composition
I may also use woodite as a Packing for the grooves The Asbestos fibre may be used
without the wire

page_text: In solid bottom, or gland cocks, Fig 5 I use a ring of Packing as shewn at c I
may also use a disc spring as shown at a in Figs 2 and 5 to keep the plug hard on
the Packing
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what I
claim is
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