IMPROVE- MENTS IN FILTERS AND THE FITTINGS CONNECTED THEREWITH
Year: 1877

page_text: LETTERS PATENT to Henry Berlon, Isidor Fürstenhagen, and Hermann Wildt,
Agents, of Bradford, in the County of York, for the Invention of "IMPROVE-
MENTS IN FILTERS AND THE FITTINGS CONNECTED THEREWITH."
Sealed the 15th February 1878, and dated the 4th September 1877.
PROVISIONAL SPECIFICATION left by the said Henry Berlon, Isidor
Fürstenhagen, and Hermann Wildt, at the Office of the Commissioners of
Patents on the 4th September 1877.
HENRY BERLON, ISIDOR FÜRSTENHAGEN, and HERMANN WILDT, Agents, of Bradford,
in the County of York. "IMPROVEMENTS IN FILTERS AND THE FITTINGS CON-
NECTED THEREWITH."
"
Our improvements relate to filters and filtering apparatus and the fittings connected
therewith, and consist, first, of filters attached directly to the house service water
pipe; and, secondly, in filtering apparatus for filtering water used in steam boilers. For
this purpose we attach to or connect with the water service or supply pipe a filtering
case or chamber, made by preference circular, the top of which is made with a screw
over which screws a cover in which is fitted an angular short pipe, having formed
thereon a tap plug having two openings, one cut through the plug, and the other only
partly through, forming an opening to the short angular pipe to admit the water
passing through the filter; over the plug is fitted a tap having a hollow boss cut
with a hole; in the hollow boss is placed the nozzle of an ordinary water supply tap
to which it is brazed or otherwise attached; the bottom part of the tap is made
with a short nozzle.
When the case or chamber is screwed on the cover and hangs down, the water
from the water pipe passes through the angular short pipe into the filter case or
chamber, in which is placed the filtering material composed of washers which fit the
inside of the case or chamber; these washers are made of the finest sheeps' wool
prepared with "paraffin" dissolved in "benzine;" the washers are kept together by
galvanized wires secured at the top, and leaving a loop to pull out the washers and
allow of ready removal for cleansing the filtering material when necessary, which is
Price Kd 1

page_text: done by passing the washers or filtering material through cold water; the flow of
the filtered water is regulated by the number of washers placed in the case or
chamber which varies according to the pressure on the main.
The case or chamber is made with a bottom flange, having a nozzle formed thereon,
for the discharge of the filtered water; the end of the plug is made with a projecting
collar and with a screw; over the collar is fitted a spiral spring, and on the screw is
screwed a button which presses more or less according to the screwing up of the
button, the spiral spring against the tap keeping the tap always in working position
on the plug.
When the water is not required to be filtered, the filter is turned in a horizontal
position, which brings the tap over the straight opening or hole in the plug, allowing
the water from the main pipe to run out, and closing the communication with the
filter.
The filter can be made without the tap fittings; in that case the nozzle of the
ordinary water supply tap is placed in a hollow boss formed on the cover of the
filter case or chamber, and brazed or otherwise attached, allowing only filtered water
to pass. The filter and fittings are made of metal or metallic alloy that will not easily
corrode.
We employ our filtering material made of the finest sheeps' wool prepared with
"paraffin" dissolved in "benzine" for filtering water used in steam boilers; the
filtering material is made in large sheets, round, square, or of any required size or
shape, and one or several sheets are employed and are kept in position by
metal frames which are fitted in the cisterns after the filtering material is placed in
position.
The filtering material is placed in a cistern having three compartments, forming
three filters, allowing the shutting off of the water from any of the three filters when
the filtering material requires to be cleansed; near the bottom of the cisterns are fitted
false bottoms, having spaces for the flow of the filtered water; the false bottoms are
made with openings to allow the filtered water to escape; the cisterns are made by
preference of wood, but iron cisterns may be employed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Berlon, Isidor Fürstenhagen, and Hermann Wildt, in the Great
Seal Patent Office on the 2nd March 1878.
HENRY BERLON, ISIDOR FÜRSTENHAGEN, and HERMANN WILDT, Agents, of
Bradford, in the County of York. "IMPROVEMENTS IN FILTERS AND THE FITTINGS
CONNECTED THERETO.'
The said improvements relate to filters and filtering apparatus and the fittings con-
nected therewith, and consist, first, of filters attached directly to the house service water
pipe; and, secondly, in filtering apparatus for filtering water used in steam boilers and
other purposes.
For this purpose we attach to or connect with the water service or
supply pipe a filtering case or chamber, made by preference circular, the top of which is
made with a screw over which screws a cover in which is fitted an angular short pipe
having forined thereon a tap plug having two openings, one cut through the plug,
and the other only partially through, forming an opening to the short angular pipe to
adinit the water passing through the filter; over the plug is fitted a tap having a
hollow boss cut with a hole; in the hollow boss is placed the nozzle of an ordinary
water supply tap to which it is brazed or otherwise attached; the bottom part of the
tap is made with a short nozzle.
When the case or chamber is screwed on the cover and hangs down, the water
from the water pipe passes through the angular short pipe into the filter case or
chamber in which is placed the filtering material, composed of washers which fit the
inside of the case or chamber; these washers are inade of the finest sheeps' wool
prepared with "paraffin" dissolved in "benzine;" the washers are kept together by
galvanized wires or by a string secured at the top, and leaving a loop by which to
pull out the washers and allow a ready removal for cleansing the filtering material
when necessary, which is done by passing the washers or filtering material through
cold water; the flow of the filtered water is regulated by the number of washers
placed in the case or chainber, which varies according to the pressure on the main.
The case or chamber is made with a bottom flange, having a nozzle formed thereon
for the discharge of the filtered water; the end of the plug is made with a projecting
collar and with a screw; over the collar is fitted a spiral spring, and on the screw is
screwed a button, which, according to the screwing up of the button, more or less
presses the spiral spring against the tap, keeping the tap always in working position
on the plug:
When the water is not required to be filtered, the filter is turned into an horizontal
position, which brings the tap over the straight opening or hole in the plug, allowing
the water from the main pipe to run out, and closing the communication with the
filter.
The filter can be made without the tap fittings, in which case the nozzle of the
ordinary water supply tap is placed in a hollow boss formed on the cover of the
filter case or chamber, and brazed or otherwise attached, allowing only filtered water
to pass.
The filter and fittings are made of metal or metallic alloy that will not
easily corrode.
"
We employ our filtering material made of the finest sheeps' wool prepared with
paraffin" dissolved in "benzine" for filtering water used in steam boilers, and for
other purposes; the filtering material is made in large sheets, round, square, or of
any required size or shape, and one or several sheets are employed and are kept in
position by a metal frame which is fitted in the cistern after the filtering material
is placed in position.
The filtering material is placed in a cistern having three compartments, forming
three filters, allowing of the shutting off the water from any of the three filters when
the filtering material requires to be cleansed; near the bottom of the cisterns are fitted
frames having openings for the filtered water to escape; on the top of the frames
is placed the filtering material; the cisterns are made of wood, but iron cisterns may
be employed.

page_text: But in order to enable our improvements to be better understood we will proceed
to more particularly describe the same by reference to the accompanying Drawing, in
which-
Figure 1 represents a sectional elevation of a filter attached to the house service
water pipe; Figure 2, front elevation; and Figure 3, plan of the same.
Figure 4 represents a sectional elevation of filtering apparatus for water used in
steam boilers and other purposes; and Figure 5, plan of the same.
Similar letters of reference are used to represent similar parts.
A, filtering case or chamber of metal or metallic alloy that will not easily corrode,
and which is made by preference circular; the top of the case is made with a screw B
on which screws a cover C, formed or fitted with an angular pipe D, E; the pipe E
is made with a tap plug F, having two openings G and H; the opening G joins the
openings of the pipes D, E, and the opening His made straight through the plug; a
leather washer I or other suitable washer is fitted under the cover to form a tight joint.
The plug F fits in a tap J, having a hollow boss K and opening L; in the boss K is
fitted the nozzle M of an ordinary water supply tap, to which it is brazed or other-
wise attached; the bottom part of the tap J is made with a short nozzle N to
discharge the water from the main pipe when filtered water is not required; the plug
F is made with a collar O and screw P on which screws a button Q; over the collar
O is fitted a spring R, which is for the purpose of tightening the plug in the tap,
and to keep it always in working condition. Inside the case or chamber A is placed
the filtering material, which is composed of washers S made of the finest sheeps'
wool prepared with "paraffin" dissolved in " benzine;" the washers are kept
together by a galvanized wire or wires T, or by strings on which is left a loop
U by which to pull the washers out when the filtering material is required to be
cleansed.
When the filter hangs down it is in position for filtering, and the water coming
from the water service or supply pipe passes through the opening L into the passage
G and in the chamber A, passing from there through the filtering material or washers S,
and the filtered water is discharged through the nozzle V; the flow of the filtered water
is regulated by the number of washers placed in the chamber A, and which varies
according to the pressure on the main.
When filtered water is not required the filter is turned up into a horizontal
position, closing the communication or passage G, bringing the opening H in com-
munication with the opening L, thereby allowing water from the main pipe to run
out of the nozzle N.
୯
For steam boilers or for other purposes we construct a filter made by preference
of wood, and having three compartments W, X, Y; in the bottom of the cisterns are
fitted frames Z, in which are left openings A¹ to allow the filtered water to escape
and be discharged through branch pipes B¹ into a boiler feed water pipe or pipes C¹ ;
on the top of the frames is placed the filtering material, which is composed, as
herein-before described, of the finest sheeps' wool prepared with "paraffin" dissolved
in "benzine," and made in large sheets D¹, square, round, or of any required size
and shape; one or several sheets are employed, the number being regulated by the
pressure on the water; the sheets of filtering material are kept in position by metal
frames E', which are placed in the cistern, preventing the filtering material lifting;
on the top of the filters or cisterns we fit covers F', through which pass pipes G¹
formed or connected to taps H¹³, which are fitted to branch pipes I' formed or fixed
to a main supply pipe or pipes J¹. Water from the main passes through the opened
taps H¹, if the three cisterns are in action, and through the filtering material into
the spaces K', which filtered water is discharged into the boiler feed pipe or pipes ;
any deposit coming from the unfiltered water remains on the top of the filtering
material, and to remove it the tap H' is closed, stopping the flow of water from
the main, and the cover F¹ removed; the filtering material can also be removed
and cleansed of any impurities deposited in the material.
Having thus described our improvements and the best means we are acquainted with
for carrying the same into effect, we would have it understood that we do not confine

page_text: ourselves to the precise details, shewn and described, as they may be varied
without departing from the peculiar character of the Invention, but what we do
claim is,
Firstly. The employment of filtering material composed of washers or sheets of
the finest sheeps' wool prepared with "paraffin" dissolved in "benzine," substantially
as and for the purposes herein described.
Secondly. The construction and employment of house filters or filters attached
directly to the house service water pipe, subtantially as herein-before described and
represented in the accompanying Drawing.
Thirdly. The construction and employment of filters for filtering the water for
steam boilers or for other purposes, substantially as herein described, and represented
in the accompanying Drawing.
In witness whereof, we, the said Henry Berlon, Isidor Fürstenhagen, and
Hermann Wildt, have hereto set our hands and seals, this First day of
March in the year of our Lord One thousand eight hundred and seventy-eight.
Witness,
20 WALTER JAS. TURNER, C.E.,
Patent Agent,
Bradford.
HENKY BERLUN.
ISIDOR FÜRSTENHAGEN. (L.S.)
HERMANN WILDT.
(L.S.)