Improvements in Balances.
Year: 1886

page_text: Date of Application, 5th June, 1886.
Complete Left, 4th Mar., 1887.
Complete Accepted, 5th Apr., 1887.
Improvements in Balances.
I MICHAEL EDUARD REISERT, one of the partners of the firm of Hennefer
Maschinenfabrik C. Reuther & Reisert, of Hennef, Germany do hereby declare the
nature of this invention to be as follows:-
The invention relates to improvements in scales or balances, in which the weight of
material passing the same is automatically registered; and the objects of my improve-
ments are first to increase the exactness; second to obtain a short steady and regular
motion of the scale beam; third to secure the working of the balance; fourth to
prevent fraudulent influences from outside; and fifth to provide means for a regular
supply of material during the last equipoise moments.
To attain these objects the balance is provided with a common scale beam, which
can equilibrate when the scales are empty as well as when charged.
Two flaps close the supply funnel. The one flap serves to reduce the supply of the
material to be weighed to fine rays or streams which enter through slots provided in
the flap into the weighing receptacle, before the latter is entirely filled with the
quantity balancing the weight placed upon the weight scale.
The other flap closes entirely the supply funnel as soon as the beam is in the state
of equilibrium.
This second flap serves a double purpose, viz: it has to effect the entire closing of
the supply funnel so soon as ever the material, which drops into the weighing
receptacle when the beam equilibrates, is balanced, and it has to cause the emptying
of the receptacle after the supply has discontinued.
The second flap is attached to a three-armed lever, one arm of which is provided
with a counter-weight, which bears normally against a stop. At one of the arms of
the lever rests temporarily upon a knife-edge a moveable rail, which is connected
either with the bearing rod of the weighing receptacle or with a lever oscillating with
the balance. The counter weight is arranged in such a manner, that in the position,
when the flap is opened it lays to the left hand side of the pivot of the three-armed
lever thus bearing against the said stop. At another arm of the lever is suspended a
forked rail, which causes the emptying of the weighing receptacle by lifting an
arresting hook provided with two noses after the supply funnel has been entirely
closed.
An overcharging lever pivotted upon knife-edges and provided with an adjustable
counterweight presses upon the bearing rod of the weighing receptacle. This lever

page_text: serves to cause the closing of the supply funnel as soon as ever the material filled in is
exactly as heavy as the weight placed upon the scale.
The first flap is provided with a roller, upon which acts a projection attached to the
weighing receptacle thus opening and closing this flap.
The weighing receptacle oscillates around its axis when tilted over for emptying
and when reassuming the filling position.
According to a modification of my invention the second flap is not provided with a
weight above its pivot, the closing of this flap can not be caused by the tilting over of
such weight.
Therefore the second flap is supported by a toggle attached at its lower end to the
mentioned overcharging lever, which presses upon the scale-beam. The one link of the
toggle, the lower one, is provided with a counter-weight which presses the link toward
the overcharging lever. The above mentioned parts are of such proportions as to
require but very little motion and very little pressure of the scale-beam and the
overcharging lever for bending the toggle, whereby the closing of the second flap and
the disengaging of the hook arresting the weighing receptacle is caused.
According to an other modification the roller which is attached to the first flap and
causes the opening of the flaps, is replaced by a lever.
As long as the weighing receptacle is empty, a projection attached thereon presses
upon the latter lever, the lever presses upon a pin of the first flap and the pin presses
upon the second flap; consequently both flaps are opened.
According to a less advantageous construction the closing of the second flap may be
caused by the disengaging of a click, which is disengaged either by the overcharging
lever or directly by the scale-beam. The result of the weighing process is thereby
influenced by the friction caused by the disengaging of the click or hook.
In this construction as well as in that before described the weighing receptacle is
connected with a counter, which indicates the number of discharges of the receptacle.
To prevent the balance being influenced in any way from outside a jacket is
arranged around the mechanism. Nevertheless it is possible to retain or interfere
with important working parts through the openings of supply and of discharge. To
make impossible also such agitations the balance may be provided with a feeding
mechanism, which is mechanically rotated and transports the material to the entry and
from the outlet.
An other part of my invention relates to a device, serving to prevent too light
charges of the weighing receptacle which arise when the supply of the material has
been diminished to such a degree in the last weighing moment as not to fill entirely
the slits in the first flap. The device is formed substantially by a reservoir arranged
above the balance in the supply funnel in combination with a third flap; this reservoir
retains always so much material as is required after the closing of the first flap, thus
supplementing the wanted material. This is effected as follows.
The supply funnel is divided by a partition into two divisions. The material
to be weighed enters at first into the one funnel-shaped division, which is closed at
the bottom by a separate flap, the third one. As soon as this division is filled, the
material runs over the partition through the channel shaped other one into the
weighing receptacle. When the latter is sufficiently charged, it descends thus causing
the first flap to be closed. As the first flap is connected with the third one by a
rod, the third flap has been opened simultaneously with the closing of the first flap.
If now the supply of material would be too little, it is completed from the stock in
the channel shaped division, whereby an equal supply during the equipoising moment
is always secured.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the said Michael Eduard Reisert.

page_text: Improvements in Balances.
MICHAEL EDUARD REISERT, one of the partners of the firm of Hennefer
Maschinenfabrik C. Reuther & Reisert of Hennef, Germany, 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 improvements in weighing apparatus, which weigh
automatically the material filled therein and register the weight thus stated and the
object of my improvements is to secure the greatest correctness in weighing and the
exact working of the apparatus.
I attain this object by the mechanism illustrated in the accompanying drawings,
which show side elevations partly in section of a weighing apparatus constructed
according to my invention and indicate different positions of the mechanism more
particularly referred to hereafter.
Similar letters refer to similar parts throughout the several views, wherever they
occur.
A is the scale beam, B the receptacle for receiving the material to be weighed,
C the weight scale. The material to be weighed enters through the hopper D into
the receptacle B, which when exactly filled empties itself automatically. The number
of discharges of the receptacle B are registered by the counter X.
Beneath the hopper D oscillate two flaps F and G. The upper one F serves to
reduce shortly before the discharge of the receptacle B the supply openings to small
slits arranged in the said flap. The lower one G stops entirely the supply of
material.
リ
The filled receptacle is emptied by tilting over. When the receptacle returns into
the upright position the projection attached thereon presses upon the arm R, which
presses upon the pin S of the flap F; as the latter presses upon the arm of the
flap G, both flaps F and G will be opened by the returning receptacle. The bracket k
of the receptacle engages into the hook pivoted to the suspension rod b thus
arresting the receptacle in the upright position. The flap G is connected with an
arm W and this arm with a toggle LMP, which is stretched by the raising flap G
and bent by the influence of the counterweights p towards the right hand side so far
as the stop m will allow it.
A lever I pivoted upon knife edges either engages by the knife edge under the
scale C (figures 1, 2 and 4) or overbears by the knife edge i the suspension rod of
the receptacle B (figure 3) and is provided at the other end with the counterweight H
which is suspended from and pivoted at a pine attached to the frame of the apparatus.
The arm of the counterweight H presses by means of the roller ¹ upon the
lever I.
The above described position of the working paris is illustrated by Figure 1. In
this position the matters entering through the channel d and the lever I borne upon

page_text: by the weight H influences the scale beam A. After sufficient material has been
introduced into the receptacle B to equipoise the balance, the receptacle B descends
until the arm of the weight H rests upon the pin t. By this motion the projection
becomes free from the lever R thus allowing the flap to drop, while the flap G is
maintained still in open position by the toggle LM. P. During the described
movement of the scale beam the counterweight H rotates around the pivot e. The
centre of gravity of the counterweight H being already in the position of Figure 1
beneath the horizontal line drawn through the axis of the pivot e, the effect of the
counterweight upon the lever I and thereby upon the scale beam will successively
decrease during the rotation, as the actual length of the lever bearing the counter-
weight His reduced proportionally to the descending counterweight.
This effect will decrease so much the more as the actual length of the arm h
pressing upon the lever I increases during the rotation as it is shown in the drawings.
The position of the counterweight H is such that its pressure upon the scale beam
remains partly in action even after it rests on the stud A, until by further supply of
material through the slits of the flap F the seale beam is in equipoise again. The
consequence of the described decreasing pressure of the counterweight H upon the
scale beam, which is obtained by the special arrangement of the pivoted counterweight,
is a steady movement of the beam from the position shown in Figure 1 until the next
position of rest is attained as shown in Figure 2; thus the beam is protected against
the impact of entering material, which otherwise might cause the beam to fail correctly
to adjust itself in the position of rest as shown in Figure 2.
The weight H then stops to act on the scale C thus discharging the latter of its weight.
The balance comes to a rest again when the weight H is supported by the pin t.
But during this short motion the projection has become free of the lever R, thus
allowing the said lever and the flap F resting thereon by the pin S¹ to drop and bar
the supply opening up to the slits in the flap F (Figure 2).
Through the slits of flap Fnow enters only so much of the material into the
receptacle B as to equipoise the scale beam and to set it in motion again. At this
repeated motion of the scale beam the pin a attached to the band Z of the beam
pushes the arm of the toggle piece MP and thereby causes the toggle LMP to
bend towards the left hand side, whereby the flap G looses its support, drops and thus
stops entirely the supply of material.
With the arm W and the flap G is rigidly connected the arm W₁, whereto the
rail N is suspended. As the arm Wis raised rapidly when the toggle joint LMP is
bent, the rail N lifts the hook O from the projection of the receptacle thus causing
the latter to tilt over and to pour out its contents (Figure 3).
As before described the counterweight H rests upon the pin after the upper supply
flap F has been closed. Now when through the slits f of the flap I so much material
has entered the receptacle B as to put the scale beam in equipose again, the influence
of the weight H upon the balance ceases, and there only remains the influence of the
lever I. This action of the lever I upon the balance is very important, as will be
understood from the following.
The arms of the scale beam A are of equal length, the receptacle B and the scale C
are of an equal weight, and the charges of the receptacle are to be exactly as heavy as
the weights placed on the scale C. For the purpose of securing that the material,
which is on the way between the supply hopper and the receptacle B after the hopper
has been entirely closed, shall not form a surplus but an integral part of the quantity
of material balancing the weight of the scale C, either the receptacle B is counter-
weighted by the arrangement of the lever I (fig. 3) or the scale C is discharged in a
similar manner (fig. 1 and 2).
For this purpose the lever I is pivoted upon knife edges and provided with an
adjustable counterweight V, which is placed thereon according to the description of
material to be weighed. In the construction according to fig. 3 the lever I partly
balanced by the counterweight presses by means of the knife edge upon the
projection arranged at the receptacle B and thereby counterbalances this side of
the scale in correspondance with the position of the weight V.

page_text: In the other construction a like effect is obtained by the rear arm of the lever I
bearing under the scale arm of the beam by means of the knife edge and thus
discharging the front arm by the pressure of the weight V. In both constructions
the action of the lever I upon the beam should be sufficient as to overcome the
resistance caused by the arm u against the pin a of the beam during the bending
motion of the toggle joint L M P and to produce the bending of the toggle joint so
prematurely as to balance the material, which drops upon the material filled into the
receptacle B after the scale beam becomes in equipoise.
For controlling the correctness of the charges of the receptacle B corresponding
with the weight in the scale C, the pin o attached to the hook C is turned upwards
thus preventing the lift of the hook N and the emptying of the receptacle B after it
has been filled, and the lover I and the weight H are supported by the up turning of
the crank Y consequently then the scale beam will be out of contact with all
mechanisms and therefore the hands can indicate freely. When in such case the
hands do not balance exactly, the weigh V of the lever I is adjusted correspondingly
and the next charge is then controlled again.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same has to be performed, I declare that what I claim is
1. In automatic weighing apparatus the combination of the scale beam A and the
supply flap G with the toggle joint or articulated lever LMP, substantially acting as
described, for the purpose of supporting and closing the second supply flap G.
2. In automatic weighing apparatus the combination of the scale beam A the toggle
joint or articulated lever L M P and the supply flap G with the lever I for the purpose
of closing the flap G so as to balance or compensate for the material which drops
upon the material already filled into the receptacle after the scale beam equipoises.
3. In automatic weighing apparatus the combination of the scale beam A with the
toggle joint LMP and the arms W and W₁ for the purpose of disengaging the
arresting device of the weighing receptacle and of causing the latter to be emptied
thereby.
4. In automatic weighing apparatus the combination of the pivoted counterweight H
with the scale beam A for the purpose of steadying the movement of the scale beam
during the closing of the first supply flap F.
1007
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.