Improvements in Filters.
Year: 1891

page_text: Date of Application, 29th Aug.. 1891
Complete Specification Left, 26th May, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Filters.
Í ROBERT COOKE SAYER of 11 Clyde Road Redland Bristol Civil Engineer,
do hereby declare the nature of this invention to be as follows :—
See drawing where Fig. 1 in sectional elevation and . Fig. 2 in sectional plan
show the arrangement.
Two reservoirs A and B are provided, A being upon the top of B and for
unfiltered water; B is for the filtered water. A has perforations A A. and carries
by means of the bolts A B a syphon C; C by means of the bolts CA carries a.
chamber D. D is forined in two parts DA and DB, D B forms a cover to D
DA and DB are perforated at DC and are connected by the bolts DD; elastic
washers CZ, CY and D Z keep the several joints water tight.
Chas openings CB and CC and communicates with A and D, it is charged
with fine animal charcoal or other filtering medium, and D prevents its escape with
the water, and acts as a retaining sieve; Dis filled with material either charcoal,
emery, sand or other of varying degrees of fineness, and laid in vertical strata,
Z being the central one composed of the finest material, and Z, Z and Z³ represent
any number of other strata, graduating in size so that each retains the other in
position and prevents its being carried away with the water when it passes through
From A in the direction of the arrows and enters B at DC; Z the coarsest is too
large to pass through DC, and the finest Z prevents the escape of the filtering
material in C; so that D can be handled when detached from C without Z escaping.
The bolts, DD.compress D Z after D is filled so as to form one solid block, of
carbon powder, or other material of varying strata.
When A is so large as not to be readily removed with the hands, C and D are
attached to A and B on the outside so as to be easily removed.
When B is so large as to give room for C being formed straight and when
upward filtration as well as downward is not required D is attached to the bottom
of C direct.
Dated this 28th day of August 1891.
PARANT MAATH
AVRD
ROBERT COOKE SAYER.
0
J
COMPLETE SPECIFICATION.
Improvements in Filters.
ROBERT COOKE SAYER 11 Clyde Road, Redland, Bristol, Civil Engineer, 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
5 statement:—
The object is to filter water efficiently, in such a way that the filtering material,
and its retaining material, may be removed and cleansed, or renewed, with ease, and
when the reservoirs are heavy, without their being moved.

page_text: chamber, at the other. end a chamber as described in Claim No. 1 for retaining
its filtering material, while the water can pass from the unfiltered reservoir, and be
cleansed by the filtering material before passing through the retaining material on
its way to another reservoir for filtered water substantially as described.
3rd. Attaching the syphon, or the straight chamber, to the outaido of the
reservoir for unfiltered water, either inside or outside the reservoir for filtered
water; and when attached outside, then to attach the end of the chamber for
retaining the filtering material to the outside of the reservoir for filtered water,
80 that the syphon, or straight chamber, and retaining chamber shall be outside
both reservoirs and either may be removed without disturbing the other or either
reservoir, substantially as described.
Dated thie 26th day of Mow 1900