IMPROVEMENTS IN PACKING SPECIALLY APPLICABLE TO FILTERS AND EXTRACTORS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
We FREDERICK HENRY VARLEY of 82 Newington Green Road Electrical
Engineer, WILLIAM BEALE of Holloway Road Confectioner, ROBERT HENRY
PADBURY of Mildmay Grove Engineer, and JOHN RONALD SHEARER of Basinghall
Street Accountant, all in the County of Middlesex do hereby declare the nature of
our Invention for IMPROVEMENTS IN PACKING SPECIALLY APPLICABLE TO FILTERS
AND EXTRACTORS to be as follows:-
Our Invention consists of improvements in packing applicable for filters, steam,
and fluid tight and other joints.
In carrying out our invention we employ carbon in the form of plates, sheets,
cord or wool or porous or fibrous texture made in. accordance with the Specification
of Patent granted to Frederick Henry Varley N° 2776 dated June 13th 1882 for
the purpose of providing a packing which resists the action of chemical agents or
re-agents within certain range of temperature and which can be used as a packing
for filters, joints, and such like and in all cases where other packings have hitherto
failed by destructive agency of chemicals or other action.
T. MORGAN,
46, Southampton Buildings, Chancery Lane,
"Applicants' Agent.

page_text: We FREDERICK HENRY VARLEY of 82 Newington Green Road Electrical
Engineer WILLIAM BEALE of Holloway Road Confectioner ROBERT HENRY
PADBURY of Mildmay Grove Engineer and JOHN RONALD SHEARER. of Basinghall
Street Accountant, all in the County of Middlesex, do hereby declare the nature
of our said Invention for IMPROVEMENTS IN PACKING SPECIALLY APPLICABLE TO
FILTERS AND EXTRACTORS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
Our invention consists of improvements in packing applicable for filters steam and
fluid tight and other joints.
In carrying out our invention we employ carbon in the form of plates, sheets,
card, or wool, or porous or fibrous texture, made in accordance with the Specification
of Patent granted to Frederick Henry Varley No 2776 dated June 13th 1882 for
the purpose of providing a packing which resists the action of Chemical Agents or
reagents within certain ranges of temperature and which can be used as a packing
for filters joints and such like, and in all cases where other packings have hitherto
failed by the destructive agency of chemicals or other action that is to
say, that as
by the Patent granted to Frederick Henry Varley N° 2776 and dated June 13
1882 fibrous material is carbonised and converted into electric conducting carbon
and withstands the action of chemical reagents and as the fibrous material retains
a considerable degree of elasticity and flexibility the same can be employed for
steam packing in place of cotton wool asbestos fibre spun yarn or such like sub-
stances as are commonly used in stuffing boxes for steam and hyraulic packings.
If carbonized cotton wool be used it will serve the place of asbestos fibre and it is
obvious can be employed in a like manner.-To make packings for steam engines
we prefer to use flexible carbon cord this is coiled around the piston pumps or slide
rods or as required, and rammed into the stuffing box; when the latter is filled we
prefer to pour molten paraffine wax ozekerit grease or Vaseline or other similar
substance which are little subject to decomposition so as to fill in the interstices, in.
this manner a very durable packing is obtained.
In other cases such as packings for freezing machines especially when Ammonia
is employed the use of the fibrous carbon with such lubricants as are unaffected by
chemical action renders the flexible carbon especially suitable.
If the flexible carbon be made out of thick woven or felted substances the same
can be stamped out into discs with a central hole fitting the piston pump or slide
rods these are placed into the stuffing box or packing chamber in the usual way
and form also excellent packings.-discs also of carbonized cloth & form an
excellent filtering medium and as the carbon resist the action of chemical reagents
the same may be employed in places where filtering paper or asbestos fibre or cloth
*are inapplicable.
.
Further in its employment for extractors such as the clarifying of sacharine
liquors this carbon possesses much of the property of animal charcoal in extracting
the color and otherwise purifying and filtering the fluid.

page_text: 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.
The use of flexible carbon manufactured according to Patent granted to Frederick
Henry. Varley No 2776 and dated June 13th 1882 as far as the same may be
employed for packings, filters, and extractors substantially as described.
FREDERICK HENRY VARLEY,
Agent for Applicants.