New or Improved Automatic Olosing Device for Vessels containing Thick Liquids.
Year: 1897

page_text: Date of Application, 13th Dec., 1897-Accepted, 19th Feb., 1898
COMPLETE SPECIFICATION.
New or Improved Automatic Olosing Device for Vessels containing
Thick Liquids.
I, OTTO BERTHOLD, of Langenstein, in the German Empire, Merchant, 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 relates to an automatic closing device for vessels containing thick
liquids, whereby the necessity for watching for the moment when the exact quantity
of liquid has been drawn off is obviated, and an automatic closing of the outlet from
the containing vessel is effected at the moment when the prearranged quantity has
been delivered into the receiving vessel.
The accompanying sheet of drawings illustrates in vertical section three examples
of apparatus constructed in accordance with the invention.
Referring in the first place to Figure 1, the outlet tube a of the containing
vessel a is closed by a slide b made of steel or other suitable material. This slide b
is fixed to a lever a pivotted to the sides of the outlet tube a. The lever c is forked
at its pivotted end and the slide b is carried between the two branches of the fork.
On the free end of the lever c is placed an adjustable weight d, which, when the
lever is left to itself falls and effects the closing of the end of the tube a by the
slide b. In order to hold the slide open, the hook e, pivotted on the lever c, is
hooked to the fixed part f, so that the point of the hook comes over one end of the
lever g pivotted at h, the other end of the said lever being held up by the spring i.
This other end of the lever g is connected, by means of a cord &, with a weight?
which rests on one end of a lever m pivotted at n. The other end of this lever m is
connected by a cord o with the float p dipping into the vessel a² into which the thick
liquid is to be drawn off from the vessel a
The length of the cord o is so adjusted that the float p stands at the level to
which it is desired to fill the receiving vessel a*.
When it is required to draw off liquid from the vessel a¹, the lover c is raised into
the position shown in the figure so as to raise the slide band open the outlet tube a
The hook e is then hooked to the part f, the float p is suspended to one end of the
lever m so as to hang freely in the vessel as, and the weight is placed on the other
end of the lever m, so that the said lever is balanced, or at least placed in such a
position that the weight cannot fall off. Immediately the liquid has risen in the
vessel a to such a height as to reach and raise the float p the cord o is slackened,
the lever m rises at that end, and the weight 7 falls off from the other end of the
lever m, and draws down, by means of its cord k, one end of the lever 7 raising
the other end thereof and thereby unhooking the hook e from the part thus re-
leasing the lever c which then falls by the action of its weight and closes the slide b
over the end of the outlet a.
The apparatus may also be released in an analogous way by means of a scale
beam the rising or falling of one arm of which into a particular position being made
to effect the release of the weight d by any suitable means.

page_text: The weight d may be connected directly to the slide 6 without the intervention
of the lever c, as shown in Figure 2. Also instead of a weight a spring may be
employed as shown in Figure 3. In both Figures 2 and 3 the lever g is arranged
as a bell-crank lever, and the slide is held up when in its raised position by a
pin f resting on the upper end of the vertical arm of the said bell-crank lever g,
and is released by the weight drawing down the horizontal arm thereof so as to
withdraw the end of the vertical arm from under the said pin f'.
l
Similar letters of reference relate to like parts in all the figures of the drawing.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
The automatic closing device for the outlet openings of vessels containing thick
liquids, which device consists of a weighted or spring actuated slide b, means for
holding the said slide raised while the liquid is passing, and means, consisting of
the levers g, m, cords k, o, weight and float p for releasing the said slide when the
vessel into which liquid is to be drawn is filled to the required height, substantially
ás described.
.
100-
O. BERTHOLD,
Per W. H. Beck, Agent,
115, Cannon Street, London, E.C.