Improvements in Taps and in Filters for same, especially applicable to Bibcocks for Water Pipes.
Year: 1894

page_text: Date of Application, 30th Jan., 1894
"omplete Specification Left. 2nd Oct.. 1894-Accepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Taps and in Filters for same, especially applicable
to Bibcocks for Water Pipes.
We, FREDERIK RASMUSSEN of 143 Store Kongensgade, Copenhagen, Assistant
Engineer in the Royal Danish Navy and JULIUS JOHAN PALLE of 13 Kroko-
dillegade, Copenhagen, Quartermaster in the said Navy do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to construct a tap or cock in which by the
closing of same a blow shall not be produced by the column of liquid in
the piping as is now the case with the ordinary cocks for drawing off water or
other liquids, and in which the valve shall also be more durable than the rubber
valves now used which are soon damaged by frost and wear. Another object is by
means of a filter to prevent rust and other matters from passing out through the
tap to the injury thereof and to the detriment of the purity of the water
drawn off.
The body or casting is formed with a waste or overflow chamber communicating
with the outlet spout and the casting is also provided with a valve seat by preference
consisting of an alloy of tin and lead for facilitating the keeping tight of the valve.
The valve is in a piece with the spindle and with an end piston and a guide piston,
the latter being arranged between the overflow chamber and the passage to the
outlet.
In the water chamber of the tap is provided a cylinder or cylindrical cap closed
at the end and provided with lateral openings. The aforesaid end piston works in
this cylinder. Inside the inlet pipe end is fitted a filter consisting of a cap or
hood by preference made of woven brass wire with meshes about 20 to 30 meshes
per inch a ring with outer screw thread on to which the filter is fixed, a socket into
which is screwed a washer and a packing. The latter is compressed between the
rim and washer by means of the socket so that it may easily, though with some
friction, be pushed into the pipe to the desired position, whereupon the socket is
further tightened up by means of a screw driver or key until the filter is firmly
fixed in place.
The desired object of preventing blows by the water column in the pipe is
attained by closing to the water inlet side before the valve has reached its seat.
Thus when the valve with end piston is pushed in or back by pressing upon a knob
on the outer end of the spindle, the water will not enter the valve chamber until
the front edge of the said piston has passed the lateral openings, and similarly
when the valve by the water pressure is brought forward again the front edge of
the piston will first close the lateral openings and shut off the water admission to
the valve chamber and the valve will thereupon be gently closed upon its seat, the
closing being counteracted or retarded by a partial vacuum in the after part of or
bottom space in the cylinder and this space will then be slowly filled with water
again as the said vacuum is gradually destroyed.
By the use of a filter of the construction hereinbefore described the rust and
other impurities which collect in the pipe will subside in the lower part thereof and
not stop up the pipe until it becomes quite filled with rust the whole length of the
filter; the tap can then be unscrewed, the filter taken out and cleaned and the pipe
cleared.
Dated this 20th dow of Lonverx 1001

page_text: +
Improvements in Taps and in Filters for same, especially applicable
to Bibcocks for Water Pipes.
We, FREDERIK RASMUSSEN of 143 Store Kongensgade Copenhagen Assistant
Engineer in the Royal Danish Navy and JULIUS JOHAN PALLE of 13 Kroko-
dillegade Copenhagen Quartermaster in the said Navy 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 :-
The object of this invention is to construct a tap or cock, in which, by the
closing of same, a blow shall not be produced by the column of liquid in the
piping, as is now the case with the ordinary cocks for drawing off water or other
liquids, and in which the valve shall also be more durable than the rubber valves
now used, which are soon damaged by frost and wear. Another object is, by
means of a filter, to prevent rust and other matters from passing out through
the tap to the injury thereof and to the detriment of the purity of the water
drawn off.
The accompanying drawing is a vertical longitudinal section through a bibcock
suitable for drawing off water and other liquids and provided with a filter.
The body or casting is formed with a waste or overflow chamber A communi-
cating with the outlet spout B and the casting is also provided with a valve seat C
by preference consisting of an alloy of tin and lead for facilitating the keeping
tight of the valve. The valve D is in a piece with the spindle D' and with an end
piston H and a guide piston E, the latter being arranged between the overflow
chamber A and the passage to the outlet.
In the water chamber K of the tap is provided a cylinder, or cylindrical cap F,
closed at the end and provided with lateral openings F' F'. The aforesaid end
piston H works in this cylinder. Inside the inlet pipe end is fitted a filter
consisting of a cap or hood L by preference made of woven brass wire with meshes
about 20 to 30 meshes per inch, a ring M with outer screw thread on to which the
filter is fixed, a socket N into which the ring M is screwed, a washer O and a
packing P. The latter is compressed between the ring M and washer O by means
of the socket N, so that it may easily, though with some friction, be pushed into
the pipe to the desired position, whereupon the socket N is further tightened up by
means of a screw driver or key until the filter is firmly fixed in place.
The desired object of preventing blows by the water column in the pipe is
attained by closing the water inlet side before the valve D has reached its seat.
Thus when the valve D with end piston H is pushed in or back by pressing upon a
knob F2 on the outer end of the spindle, the water will not enter the valve
chamber Quntil the front edge of the said piston H has passed the lateral
openings F, and similarly when the valve by the water pressure is brought forward
again the front edge of the piston will first close the lateral openings F and shut
off the water admission to the valve chamber Q and the valve D will thereupon be
gently closed upon its seat, the closing being counteracted or retarded by a partial
vacuum in the after part of, or bottom space F in the cylinder, and this space F
will then be slowly filled with water again as the said vacuum is gradually
destroyed.
By the use of a filter of the construction hereinbefore described the rust and
other impurities which collect in the pipe will subside in the lower part thereof
and not stop up the pipe until it becomes quite filled with rust the whole length of
the filter; the tap can then be unscrewed, the filter taken out and cleaned and the
pipe cleared.

page_text: 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 :-
1. The construction of tap for water and other liquids in which the valve spindle
is provided with a piston provided with openings at the side and which works in a
cylinder closed at the bottom in such manner that the liquid is let into the tap
through the said openings when the valve spindle is pushed in and gradually and
gently shut off by the water pressure when the valve spindle is let go again
because the piston will first close the lateral openings and the valve will then
gently close against its seat the retardation being produced by the partial vacuum
created in the bottom space of the cylinder, the liquid being by preference
admitted from the pipe to the aforesaid openings through a hood- or cap-shaped
filter inserted in the pipe, so that rust and other impurities are prevented from
entering the tap substantially as described and shewn.
2. The construction shown and described of a gradually closing tap for liquids.
3. The construction shown and described of a filter applied to a pipe fitted with
cock or valve of the character described for arresting rust and other impurities in
the pipe while preventing stopping up of the pipe until the latter is filled with the
impurities the whole length of the filter.
Dated this 2nd day of October 1894.
JENSEN & SON,
77, Chancery Lane, London W.C., Patent Agents.