Improvements in Automatio Ball Valves.
Year: 1895

page_text: Date of Application, 7th Oct., 1895
Complete Specification Left, 22nd June, 1896-Accepted, 8th Aug., 1896
Improvements in Automatio Ball Valves.
I, CARL GUSTAF PATRIK DE LAVAL of 16 Ilandtverkaregatan Stockholm,
Sweden, Doctor of Philosophy and Engineer, do hereby declare the nature of this
invention to be as follows:-
:―
1
The present invention refers to improvements in automatic ball valves, which
are employed in receptacles, from which the liquid is diawn by means of vacuum,
and in which the ball valve automatically shuts off the receptacle from the
discharge pipe when the receptacle is emptied. The invention consists in a i ranging
the mlet mouth of the discharge-pipe, which also serves as the seat of the valve.
inclined towards the horizontal plane, instead of, as hitherto parallel with anid
plane. By this arrangement a new effect is produced in the function of the valve,
namely, an easy opening of the samo, when the receptacle is filled. The buoyancy
of the ball acts thereby for opening the valve by means of a lever action, the
length of the lever being the distance between a vertical plane through the centre
of the ball and a parallel vertical plane through the middle point of the seat of the
valve. In order to employ a level as large as possible, and to obtain a good and
sure closure said month or scat may be inclined 45° towards the horizoutal plane.
For giving the ball a eure position during closure, I provide two supporting
abutments therefor which are arranged symmetrically in relation to the mouth or
Bent, sand mouth or seat forming the third support.
The supporting abutments may be inclined at the same angle as the mouth
or seat.
1
"
1007
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
Improvements in Automatic Ball Valves.
I, CARL GUSTAF PATRIK DE LAVAL of 16* Handtverkaregatan, Stockholin,
Sweden Doctor of Philosophy and Engineer do hereby declare the nature of this
Juvention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The present invention refers to improvements in automatic ball valves, which
are employed in receptacles, from which the liquid is drawn by means of a vacuum,
and in which the ball valve automatically shuts off the receptacle from the
discharge-pipe when the receptacle is emptied. The invention consists in at ranging
the inlet mouth of the discharge-pipe, which also serves as the seat of the valve,
inclined towards the horizontal plane, instead of as hitherto, parallel with said
plane. By this arrangement a new effect is produced in the function of the valvo,
namely, an easy opening of the same, when the receptacle is filled. The buoyancy
of the ball acts thereby for opening the valve in the manner of a lever, the length
of the lever being the distance between a vertical plane through the centre of the
TDi Q71

page_text: ball and a parallel vertical plane through the middle point of the seat of the valvo.
In order to employ a loverage as large as possible, and to obtam a good and sure
closure, said mouth or sent may be inclined 60° towards the horizontal plane. For
giving the ball a sure position during closure, two supporting abutments therefor
which are aanged a minetically in relation to the mouth or seat, are provided,
which mouth or sent forms the third support. Said supporting abutments may bo
inclined at the same angle as the month or seat. As an example of a case, where
a valve as above described 18 desuable, may be mentioned the operation of
mechanical milking by which the milk is transpotted from the milk-pails to a
receptacle by means of a vacuum. In this case it is important, that the communi-
cation between the milk-pails and the receptacle should be shut off as soon as tho
milk-pails are emptied, in order to avoid the drawing of the dairy air into said
receptacle.
In the accompanying drawing,—
Figure 1 shows the valve and discharge-receptacle in vertical section,
Figure 2 in plan, and
Figure 3 in section on the line A. B. Figure 1.
a is the ball which is made of such a material or with such dimensions, that it
can swim in the liquid contained in the receptacle c is the inlet-mouth of the
vacuum-pipe forming the seat for the ball. Said month or seat is placed at the
bottom of the receptacle o, which may be formed round for the ball, as shown.
bare supporting abutments formed by outer depressions, or by plates soldered
on to the receptacle, or fixed on in any convenient manner. Sand supporting
abutments, are placed symmetrically in relation to the mouth or seat b, which
forms the third support, as above stated. The seat a and the abutments 6', 6 m
the example shown, are inclined 60° towards the horizontal plane, but any other
convenient angle may be employed.
The valve acts as follows:-
When there is liquid in the receptacle c, the mouth or seat 6 is opened, because
the ball floats in the fluid. As soon as there is so little quantity of liquid in.the
receptacle that said liquid does not carry the ball, said ball places itself towards
the mouth or seat b, shutting off the communication betwecu the receptacle and the.
vacuum pipe
The ball hereby occupies a sure position owing to the supporting
abutments, thus enabling a sure closure As the said seat inclines 60°
towards the horizontal plane, the buoyancy of the ball acts to open the valve in the
manner of a lever, the length of the lever being that of the distance between a
vertical plane through the centre of the ball a aud a parallel vertical plane through
the middle point of the seat b.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim 18.-
1. The combination with a receptacle, provided with a vacuum-pipe having a
mouth forming the seat of a valve and being inclined towards the horizontal plane,
of a ball located in said receptacle and adapted to seat itself against the mouth of
the vacuum-pipe. substantially as set forth.
2. The combination with a receptacle provided with a vacuum-pipe having a
mouth forming the seat of a valve and being inclined towards the horizontal plane,
of abutments in the receptacle arranged symmetrically in relation to said month or
seat, and a ball-valve in said receptacle substantially as set forth.
Dated the 22nd day of June 1900
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.