Improvement in Liquid Filters.
Year: 1895

page_text: Date of Application, 15th Jan., 1895-Accepted, 9th Mar., 1895
COMPLETE SPECIFICATION.
Improvement in Liquid Filters.
HENRY WARD Powis of 101 Leadenhall Street, London, England, Timber
Merchant, and JOHN ELLIS of 104 Hanover Street Lynn, Massachusetts, United
States of America, Manufacturer, 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 consists of a filter, for filtering water or other liquid, constructed
and arranged for operation, all substantially as hereinafter fully described, reference
being had to the accompanying sheet of drawings, in which is illustrated a filter,
constructed in accordance with this invention.
Fig. 1. is a vertical central section,
Fig. 2. a cross section on line 2-2 Fig. 1.
In the drawings A represents the body of the filter. B. C. its two ends, each of
which has an internal screw thread, a. by which it is adapted to screw at each end
on to the water faucet. The body A. and end B are cast in one piece integral
with each other, but the end C. has on its inner end au internal screw thread (b)
by which it is screwed over the end F of the body, and when. screwed thereon, the
filter by either end, can be screwed to the water faucet, so that the filter, can be
changed from end to end as desired readily and conveniently. Bearing on a
shoulder H in the body at the end d is a perforated plate J. and K is another
perforated plate resting on a shoulder e in the other end F of the body, which is
held in place by a spring wire L bent in a circular form, having its two ends a
short distance apart, it being in its normal condition of a little larger diameter
than the internal diameter of the body at such place, so that when placed in
position over the perforated plate K it is compressed more or less when by its
spring pressure against the sides of the body it will hold the perforated plate K in
its seat. M is a leather washer, of ring shape, which lies against the wire spring,
and when the end piece C is screwed down in place it presses by its shoulder such
washer against the spring and makes a tight joint. There is also in each screw
end a leather washer N of ring shape which rests against a shoulder hat such end
and makes a tight joint at such place against the water faucet when the filter is
screwed to the faucet. Between the two perforated plates is placed the filtering
material P. which can be of charcoal, quartz or of any suitable material. The
object of having one end screw on to the body, is for the purpose of filling the body
with the filtering material and placing in position of the perforated plates, but in
filters now in use for such purposes both ends are made separate and screw on to the
body portion, whereas in this invention, one end being integral with the body and
one only separate to be screwed on after the filter is prepared, as is obvious makes
the cost of the filter much cheaper and therefore more desirable. There is a
space between each perforated plate and the outlet opening R of the filter
which opening is contracted somewhat, such space serving as a chamber for the
water to prevent in some degree, too forcible and direct discharge of the water.
The washers can be made of any suitable material also the perforated plates can
be of any suitable construction wire gauze &c., and they can be secured in place in
any suitable manner.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
In a reversible liquid filter, the combination with the body portion A containing

page_text: filtering material P of the ends B. C. one of which is formed integral with, and
the other, detachably connected to the body portion, an internal shoulder in each
of said ends, a perforated plate J. resting upon one, a washer M, resting upon the
other of said shoulders, a shoulder E. formed on the inner surface of the body A
and adapted to support a second perforated plate as K and a spring ring B placed
between the plate and washer, whereby, said plate is retained in position sub-
stantially as described.
In testimony whereof we have hereunto set our hands in the presence of two
subscribing witnesses.
LATENT TATTO