IMPROVEMENTS IN WEIGHING-APPARATUS FOR GRANULOUS, PULVERULENT AND LIQUID MATERIALS
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for
an Invention of IMPROVEMENTS IN WEIGHING-APPARATUS FOR GRANULOUS,
PULVERULENT AND LIQUID MATERIALS communicated to him from abroad by
Christoph Munnem, of Cologne, in the German einpire
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
'the Office of the Commissioners of Patents on the 3rd August 1883.
"
IMPROVEMENTS IN
"
HERBERT JOHN HADDAN, of Kensington, Middlesex,
WEIGHING APPARATUS FOR GRANULOUS, PULVERULENT AND LIQUID MATERIALS
a communication to me from abroad by Christoph Munnem of Cologue, in the
German empire,
This invention relates to automatic balances for granulous, pulverulent or liquid
materials.
For weighing solid materials the invention comprises a receptacle suspended
from a scale-beam and containing a single compartiment capable of being opened
and closed at the bottom by a valve without any other mechanism.
Also two weights mounted loose on a shaft provided with knife-edges, the upper
weight serving to open the inlet valves, but not until the lower or discharge valve
of the receptacle has been closed, while the lower weight serves to place the upper
weight in such a position, that it may fall freely in order to open the discharge-
valve.
Also one or more auxiliary weights serving to put the balance through the first
period of action and to close the discharge valve of the receptacle.
Also a friction roller on the end of a lever mounted on the shaft of the two
weights mentioned above.
Also a disengaging lever adapted to arrest the upper weight in its highest
position, so as to allow the balance free play.
Also an adjustable double brush for regulating the supply of material to be

page_text: weighed according to its specific gravity, and for admitting the exact quantity
desired.
Also a pivoted receptacle for weighing liquids, the said receptacle having an
opening which serves as an inlet and as an outlet.
Also a lever for arresting the said pivoted vessel, for allowing it to be emptied
and for relieving it for the first period of action of the balance.
For weighing liquids the apparatus contains two weights mounted- loose on a
shaft provided with knife-edges, the upper weight serving to discharge the lower
pivoted receptacle and to push back the upper pivoted vessel sufficiently that the
latter may receive the drops of liquid still flowing in, while the lower weight
serves to act on the upper weight, so as to assist its operation.
Also a lever adapted to stop the upper pivoted vessel, in order to release the
balance and allow it to play. The two pivoted vessels are placed one over the
other, and constructed in such a manner, that the liquid discharged from the upper
vessel enters the lower vessel at the front end, so as to prevent the formation of
scum.
2

page_text: SPECIFICATION in pursuance of the conditions. of the Letters Patent filed
by the said Herbert John Haddan in the Patent Office on the 2nd February
1884.
HERBERT JOHN HADDAN, of Kensington, Middlesex,
"
"IMPROVEMENTS IN
WEIGHING APPARATUS FOR GRANULOUS, PULVERULENT AND LIQUID MATERIALS ;
a communication to me from abroad by Christoph Munnem of Cologne, in the
German empire,
The improved balance has for its object to automatically weigh the material
introduced into it and at the same time to indicate each evacuation on a counting
apparatus connected with it. In the accompanying drawings, which serve to
illustrate the invention, Sheet I shows the arrangements of the balanco used for
finely granulated or powdered substances; Sheet II shows an apparatus for
regulating the entrance or supply for different species of corn so that they may be
weighed with the same balance; Sheets III and IV show the balance for weighing.
liquid. Figs 1. 2. 3. 4 of sheet I are side views of different positions of a balance
for finely granulated or powdered substances. Fig. 5 is a cross section. Fig 6'
illustrates the feed mechanism on a larger scale.
From an shaped scale-beam R. is suspended on one side a vessel B and on the
other side a weight receptacle C heavy enough to koop the vessel B in oquilibrium.
If corn is introduced into the hopper D, it will run through the channel d into
the vessel B first in a thick jet, then growing thinner by the partial closing of a
valve or slide F provided with one or several notches which allow the corn to
drop only slowly, till the exact weight is obtained, after which a second valve G
stops the supply entirely, and the vessel B is emptied.
In Fig. 1 the weight put on has lifted up both valves as far as to open the
channel d entirely. Moreover the beam or weight K which is pivoted at / has
been lifted as far as to be stopped by the detent K¹.
As soon as the vessel B is empty; the excess of weight at C presses the
protruding part of the bearing L against the roller R and raises thereby the
weight I. The bearing L has a second projection which is longer than the first
and presses the weight H back by means of the swelling h.
In consequence of its weight, H carries with it, by means of the neck h¹, the
valve G, and the valve F by means of two pins f' which are fixed to the sides of tho
latter; thereby the channel d is entirely opened.
The working of the balance may be divided into three operations:
Firstly: The weight K presses so long on the roller M of the closing mechanism of
the vessel, until it rests on the stop K³ (fig 2) whereby the scales are relieved of the
weight K. As the roller R presses the bearing L, the weight I, aided by the
gravity of the valves F and G, moves to the left during the introduction of grain,
and takes with it the weight H by means of the arms ii. In consequence of this
motion the valve F has half closed the channel d.
Secondly: The valve F turns round the pivotal bearing g and g¹.
The axle E provided with knife edges, swings in the bearings g, g²-
On this axle E is fixed the outer valve G, while the weights I and H are mounted
looso on tho axle.
Thirdly: A further supply of grain sets the scale again in motion.
The valve F presses now against the brush m secured to the channel d, so that
the grain can only pass through the notches ƒ (Fig. 6), the scales are then relieved
of the weight of this valve F.
The grain drops into the vessel B until the exact weight is attained; then the.

page_text: balance moves again, as well as the top mechanism, by means of which the
valve G closes the inlet entirely.
'
The pivot q is fixed on the vessel B, and the pivot s on the arm of the valve N
of the vessel. The two links O and P are connected by means of a pin r.
The pivot r is situated above a straight lino, drawn to connect q with 8. To
prevent r from rising still higher, a pin x is fixed on the vessel. In this position
of the knee-joint the valve of the vessel cannot open, although grain is supplied,
because the weight of the latter tends to press the upbent knee q r & farther up,
which motion is prevented by the pin x.
If the weight of the grain introduced has effected the equilibrium of the scale-
beam, any further grain supply is stopped by G; and as the latter is fixed on the
axle E, the top weight H will be set in motion, fall to the right and press with its
protuberance h on 1, thereby pressing the balance downward.
The roller M of the link O pushes against a stop Q, whereby a down bent
knee gra is formed, and the valve N is caused to open an outlet for the grain.
(Fig. 4).
The vessel B being emptied, the weight put on the scale C presses downward,
and presses the bearing L against the weight H provided with the protuberance h;
the roller M presses against the weight K and puts the valve Ñ back into the
position shown in Fig. 1.
As the weight swings alone until the lower valve is closed, that is to say,
until K is laid against K¹, the supply of grain cannot take place before the total
closure of N. The weight falls back by gravity and thereby opens the inlet.
In Fig. 3 the balance is disengaged by the lever Z, that is to say the top
weight.His stopped; in consequence of which the balance plays freely and may be
tested for its accuracy.
-.
Sheet III, Figs 1 and 2, show the feed-hopper, with an apparatus for weighing
with the same balance materials of different specific weights.
-If substances of different-specific weight are weighed, the lighter substance will
fill the receptacle more completely, and the distance between the material introduced
and the closure is accordingly smaller.
To obtain the exact weight the jets flowing in must bọ larger to balance the
difference.
For this purpose an adjustable double brush m, is applied which turns round the
pivot q3 and is kept in a suitable position by a screw .
Fig. 1 shows the position taken by weighing heavy fruit, in which case the
notches of valve Fare kept small. Fig 2 shows the position for light cereals, in
which case the notches are larger.
In consequence of the above said conditions the double brush can be used to
bring about the equilibrium, that is to say to adjust the balance for an accurato
weight.
Sheets III and IV show the arrangement of an automatic balance for liquids.
Fig. 1 is a side view, Fig. 2 a cross section, Fig 3 another side view and Fig 4
is an axial section.
The balance automatically weighs the liquid poured into its receptacle and
indicates at the same time each evacuation of the receptacles by a special counting
apparatus.
On a shaped symmetrical scale-Leam A is on one side the receptacle B for the
liquids and on the other side the scale C keeping the scale B in equilibrium.
The liquid passes through the feeder D, into the channel &, which may be
opened and closed by means of a throttle valve F; it runs then into the
vessel G through this into the vessel B on the same side on which the liquid
leaves it.
The vessel B has two trunnions b which are pivoted in the hoop L. The centre
of gravity of the vessel B is on the loft side. The weight of C causes the vessel B
to press against the cross bar T by means of the roller № at the same time opening
the feed or inlet mechanismu.

page_text: If liquid enters the vessel B, the latter will pivot on the trunnions band abut
with the neck n against a tooth at the extremity of the lever K, which is adapted
to turn on the pivot & supported by the hoop L of the vessel.
As the roller N continues to press against T, and by means of the above
described stop-arrangement, the balance is relieved of the overweight to the left
of the vessel B, which is now in a horizontal position. (Fig 2.)
The balance has now descended so far that the weight I, pressing on the hoop
of the vessel by means of the roller i will half close the throttlo valve F; by means
of the lever fconnected with the latter.
Weight I has moreover turned the vessel G upward by means of the pin x fixed
to the latter, the vessel being mounted on knife edges e.
The balance continues to descend; the weight I raises the vessel higher, until
at last the liquid trickles out only in a thin jet. As soon as the weight is
accurately obtained, the valve F closes entirely. The weight H, mounted loose
on the axle E, falls down on the pin y of the vessel G, and at the same time with
the nose h on the hoop of the vessol, so as to press down the balance. G is raised
high enough to allow the pin to rest on the lever O; thereby G interrupts the
flow of liquid. By the downmotion of the balance, the lever K pushes against tho
pin and releases the vessel B, which capsizes owing to the position of its centre
of gravity, Fig. 3. The liquid poured out runs into the tank P and raises the
buoy M provided with a stop m; this detent m holds fast the vessel B until the
liquid contained in it has completely run out.
The liquid flows out of the pipe W and allows the buoy M to sink; tho stop
device mp is then liberated, and the weight C begins to act.
Roller N rests against the cross bar T and does not allow the scale-beam to
return into the position shown in Fig. 1, until the vessel B is again in its
upright position. The pin o strikes against the lever O, and thereby releases the
vessel G.
The pin g fixed on the vessel G presses now against the arm f, thereby causing
the throttle valve to an afton which the hole in
CLAIMS
In automatic balances for small granular and powdered substances:
1. The use of a vessel B which hangs on a scale-beam, and contains a single
space adapted to be closed or opened by a valve at the bottom without
requiring any further movable mechanism.
2. The use of two weights, swinging freely on an axle provided with knife
edges; the upper weight H serving to open the inlet valves F and G, but
not before the lower valve N of the vessel is closed, while the lower weight I
serves in conjunction with the valvo G to place the weight H in such a
position that it can fall down, and open the valve N
3. The use of one or several weights K adapted to give the balance a first
inclination and to effect the closing of the valve N.
4. The use of the roller R in order to reduce friction.
5. The special arrangement of the lever Z for setting the balance out of action
and for enabling ono to ascertain at the same time its accuracy.
6. The use of adjustable brushes for automatic balances.
In automatic balances:
7. The use of an adjustable double brush to set the balance to an exact
weight and adapt the same balance for weighing grains of different specific
weight,
8. The use of a vessel B, the aperture of which serves as an inlet and also as
an outlet of the liquid.
9. The use of a lever K for stopping the vessel B, allowing its evacuation, and
reducing the effective weight at the first stage of operation.
10. The use of two weights swinging freely on an axle E provided with

page_text: knife-edges; the upper weight H serving to empty the vessel B and to
push back the vessel G, so far as to enable the same to receive the liquid
which still trickles down, while the lower weight I acts upon H so as to
facilitate the above said operations
11. The use of the lever O for the purpose of stopping the vessel G in order
to disengage the balance and allow it to play.
12. The peculiar arrangement of the two vessels B and G, so that the filling
with liquid is effected at the front side of B, in order to prevent the
formation of froth.
he whole substantially as described and illustrated.
"
witness whereof I, the said Herbert John Haddan have bereunto set my
d and seal this 2nd day of February A.D. 1884.
TT T
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