Improvements in Automatic Weighing Machines.
Year: 1899

page_text: Date of Application, 9th Dec., 1899
Complete Specification Left, 6th Sept., 1900-Accepted, 24th Nov., 1900
PROVID
Improvements in Automatic Weighing Machines.
I, MICHAEL EDUARD REISERT, of Hennef on the Seig, in the Empire of Ger-
many, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to automatic weighing machines or scales, and more
particularly to the arrangement for opening and closing the valves or flaps of
the feed-hopper.
Upon the suspension bars, or hangers of the scale-beam, there is supported by
means of knife edges the weighing scoop or receptacle which
open at the top
and capable of being reversed or tilted while to the other end of the scale beam
the weight pan is secured.
Above the opening of the weighing scoop or receptacle for the reception of
the material is located the feed-hopper, under the discharge opening of which
oscillate against a stationary brush attached to the discharge channel of the feed
hopper two flaps or cut-off gates. The upper gate or flap being slotted in its
front part serves for cutting off the main supply of the material from the hopper
just before the correct weight is reached so as to reduce shortly before the dis-
charge of the receptacle the supply opening of the hopper to the small slits
arranged in the said flap and to permit but a small quantity of material to pass
through the said slits, while the lower gate or flap finally cuts off entirely the
supply from the hopper to the receptacle.
These gates or flaps are connected with and operated by the receptacle in the
following manner.
The upper flap suitably pivoted to the scale frame by means of arms, rests by
means of rollers upon the upwardly projecting ends of the suspension-bars or
hangers carrying the receptacle. Furthermore to one of the arms carrying the
upper flap or to one of the journals of the said arms respectively is fixed a
lever-arm in the path of which is arranged a pin or stud on the lower gate or
flap a tappet or projection on the weighing scoop or receptacle being also
adapted to engage with the said arm adapted to oscillate in accordance with
0 the upper flap.
These parts, in combination with the other mechanism of the scale, used in
particular for weighing grain, which is well known and of ordinary construction
operate in the following manner.
While the receptacle is empty the weight in the weight pan causes the said
5 receptacle to present its inlet opening below the discharge opening of the hopper.
In this position of the receptacle both gates or flaps are open, that is to say,
they are retained in a raised lateral position. This is effected by the upper ends

page_text: of the suspension-bars or hangers which act against the rollers of the slotted
flap and by the lever arm fixed to the pivot-journal of the said flap and acting
against the lower flap or cut-off gate by pressing against the pin or stud of this
latter, such lever-arm being supported or retained in its elevated position by the
projection of the receptacle. Thus the material to be weighed can flow uninter-
rupted from the hopper into the receptacle.
When nearly sufficient material has passed into the receptacle to nearly
balance the weight in the opposite scale pan, the weight of the upper flap which
rests on the suspension bars or hangers of the scoop or receptacle, presses the
weighted receptacle downward and allows the upper flap to close the discharge
opening of the hopper so that only a small quantity of the material can then
flow into the receptacle, through the slits of the said flap. At the same time
the tappet or projection of the receptacle is disengaged from the lever-arm and
this latter releases the pin of the lower cut-off gate which latter however will
not change its position owing to a toggle lever being kept in a straight position
such toggle-levers are well known in the construction of automatic scales and
need therefore no further description.
While the upper flap after being closed rests against the brush and thus
relieves the receptacle of the weight of the flap, a small additional discharge of
material into the receptacle takes place through the slits of the flap until the
correct balance of the scale is established so as to equipoise the scale beam and
to set it in motion again. By this renewed motion of the scale beam a pin on
an arm in connection with the scale beam is caused to bend the toggle lever
whereby the cut-off gate looses its support, drops and thus entirely stops the
supply of material. At the same time the toggle lever is bent and the cut-off
gate closes an arm rigidly connected with the arm carrying the cut-off gate will
disengage by means of a rod or the like a suitable hook pivoted to the hanger
from a projection or catch of the receptacle, thus causing the latter to tilt over
in well known manner and to pour out or discharge its contents through a
door or the like provided in the lower part of the front side of the receptacle.
The moment the receptacle becomes lighter by discharging its contents it
swings back by the pull of the weight in the weight pan and open's at the same
time the upper flap while the lower cut-off gate still remains closed until the
empty receptacle, by reason of a proper distribution of its own weight, has
re-assumed its upright position. When the receptacle returns into its upright
position its discharging door closes automatically, whilst its tappet presses against
the lever arm which acting against the pin of the cut-off gate, raises or opens
the latter. The raising cut-off gate at the same time straighten's or stretches
the toggle lever and allows the hook pivoted to the hanger to engage the catch
or projection of the receptacle in order to arrest the receptacle in the upright
position.
In this arrangement the scale is caused to exercise a direct influence upon the
upper flap. This is also the reason why it is possible, in an inverse manner, to
enable the weight of the upper flap to act upon the scale and cause this latter
fo swing or move in order to allow the said flap to close thus rendering the
application as heretofore of a special starting or counter weight unnecessary.
This however is but rendered possible with the present arrangement by preventing
the receptacle, during its upward or return motion, from at once opening the
lower flap or cut-off gate so as to keep the supply of material entirely cut-off
Ly this gate until the weighing-scoop or receptacle has reached its upright
position and is ready for a fresh supply of material.
Dated 41 0th dor of Dasomber 1800.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Improvements in Automatic weighing
I, MICHAEL EDUARD REISERT, of Hennef-on-the-Sieg, in the Empire of Ger-
any, Engineer, do hereby declare the nature of this invention and in what
anner the same is to be performed, to be particularly described and ascertained
and by the following statement:
This invention relates to automatic weighing machines or scales, and more
articularly to the arrangement for opening and closing the valves or flaps of
he feed-hopper, that is to say the supply reducing flap and the cut-off gate
f the feed hopper.
The object of the invention is to provide means whereby the opening and the
losing of the flap which serves to reduce the supply opening of the hopper to
mall slits in the said flap and to permit but a small quantity of material to
pass through the slits into the receptacle, is effected by a direct influence of the
scale, and whereby the opening of the second gate which cuts off entirely the
supply from the hopper to the receptacle is caused by the return or upward
motion of the said receptacle as soon as the latter has reached its proper upright
position and is ready for a fresh supply of material.
I attain the said object by the
drawings, in which
means illustrated in the accompanying
Figure 1 is a side elevation of the improved weighing machine, with the
parts in the position they occupy when the reducing flap and the cut-off gate
are open and grain or the like is being fed into the receptacle:
Figure 2 is a similar view showing the parts in the position they occupy just
before the cut-off gate is closed; the reducing flap being already closed;
Figure 3 is a similar side elevation showing the parts in the position they
occupy when the cut-off gate is also closed and the receptacle is tilted over for
discharging its contents;
Figure 4 is a front view of Figure 2; the hook for arresting the receptacle
in its upright position and the means for operating such arresting hook are
not shown for sake of simplicity; the brush in front of the reducing flap being
partly broken away in order to show the slits of the reducing flap.
Similar letters of reference indicate like parts throughout the several figures.
Upon the suspension bars or hangers a of the scale-beam 6 there is supported
by means of knife edges c the weighing scoop or receptacle d which is open
at the top and capable of being reversed or tilted, while to the other end of the
scale beam the weight pane is secured.
Above the opening of the weighing scoop or receptacle d for the reception
of the material is located the feed-hopper f under the discharge opening of
which oscillate, against a stationary brush i attached to the discharge channel
of the feed hopper, two flaps or cut-off gates g and h. The upper gate or flap
O being slotted in its front part at gl serves for cutting off the main supply of the
material from the hopper f just before the correct weight is reached so as to
reduce shortly before the discharge of the receptacle d the supply opening of
the hopper to the small slits g' arranged in the said flap and to permit but a
small quantity of material to pass through the slits g', while the lower gate or
5 flap h finally cuts off entirely the supply from the hopper to the receptacle.
These gates or flaps are connected with and operated by the receptacle in the
following manner.
The upper flap g suitably pivoted at k to the scale frame A by means of arms

page_text: rests by means of rollers carried by sidewardly projecting studs l² of the arms &,
upon the upwardly projecting ends a¹ of the suspension-bars or hangers a
carrying the receptacle d. Furthermore to one of the journals of the arms
is loosely mounted or pivoted a lever-arm m in the path of which is arranged a
pin or stud n on the lower gate or flap h; a tappet or projection on the
weighing scoop or receptacle being also adapted to engage with the said lever-
arm.
These parts, in combination with the other mechanism of the scale, used in
particular for weighing grain, which is well known and of ordinary construction,
operate in the following manner.
While the receptacle is empty the weight p in the weight pan e causes the
said receptacle to present its inlet opening below the discharge opening of the
hopper (Figure 1). In this position of the receptacle both gates or flaps g
and h are open, that is to say, they are retained in a raised lateral position.
This is effected by the upper ends a¹ of the suspension-bars or hangers a which
act against the rollers of the slotted flap g and by the lever arm m fixed to
one of the pivot-journals of the said flap 9 and acting against the lower flap
or cut-off gate h by pressing against the pin or stud n of this latter, such lever-
arm being supported or retained in its elevated position by the projection o of
the receptacle d. Thus the material to be weighed can flow uninterrupted from
the hopper f into the receptacle d.
When nearly sufficient material has passed into the receptacle to nearly
balance the weight in the opposite scale pan, the weight of the upper flap which
rests on the upper ends a¹ of the suspension bars or hangers a of the scoop or
receptacle d, presses the weighted receptacle downward and allows the upper
flap to close the discharge opening of the hopper f so that only a small quantity
of the material can then flow into the receptacle, through the slits g of the
said flap g (Figures 2 and 4). At the same time the tappet or projection o of
the receptacle is disengaged from the lever-arm m and this latter releases
the pin n of the lower cut-off gate which latter however will not change its
position owing to a toggle lever s being kept in a straight position such toggle-
lever's are well known in the construction of automatic scales and needs therefore
no further description; vide for instance British Patents No. 7554 (1886) and
No. 19887 (1894).
While the upper flap g after being closed rests against the brush and thus
relieves the receptacle d of the weight of the flap 9, a small additional discharge
of material into the receptacle takes place through the slits g₁ of the flap g
until the correct balance of the scale is established so as to equipoise the scale
beam and to set it in motion again. By this renewed motion of the scale
beam a pin 2 on an arm 6' in connection with the scale beam 3 is caused to bend the
toggle levers whereby the cut-off gate h loses its support, drops and thus
entirely stops the supply of material (Figure 3). At the same time that the
toggle lever is bent and the cut-off gate closed, an arm 2 rigidly connected with
the arm carrying the cut-off gate disengages by means of a rod v or the
like a suitable hook u pivoted to the hanger a from a projection or catch w of
the receptacle d, thus causing the latter to tilt over in well known manner and
to pour out or discharge its contents through a door or the like provided in
the lower part of the front side of the receptacle d; Figure 3.
The moment the receptacle becomes lighter by discharging its contents it
swings back by the pull of the weight in the weight pan and opens at the same
time the upper flap g while the lower cut-off gate h still remains closed until
the empty receptacle d, by reason of a proper distribution of its own weight,
has re-assumed its upright position. When the receptacle returns into its upright
position its discharging door closes automatically, whilst its tappeto presses
against the lever arm m which acting against the pin n of the cut-off gate h,
raises or opens the latter. The rising cut-off gate h at the same time straightens
or stretches the toggle lever rs by means of the arm h¹ and allows the hook u

page_text: pivoted to the hanger a to engage the catch or projection of the receptacle
in order to arrest said receptacle in the upright position, Figure 1.
In this arrangement the scale is caused to exercise a direct influence upon the
upper flap g. This is also the reason why it is possible, in an inverse manner, to
enable the weight of the upper flap to act upon the scale and cause this latter
to swing or move in order to allow the said flap to close thus rendering the
application as heretofore of a special starting or counter weight unnecessary.
This however is but rendered possible with the present arrangement by preventing
the receptacle, during its upward or return notion, from at once opening the
lower flap or cut-off gate so as to keep the supply of material entirely cut-off
by this gate until the weighing-scoop or receptacle has reached its upright
position and is ready for a fresh supply of material.
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 is:
1. In automatic weighing machines the improved means for opening and
closing respectively the reducing flap and cut-off gate of the feed hopper, con-
structed, arranged and operating, substantially as and for the purpose set forth.
2. In automatic weighing machines the combination and arrangement of the
supply reducing flap and the cut-off gate of the feed hopper with the scale beam
and material-receptacle in such a manner, that the supply reducing flap is closed
or opened directly by the downward or upward motion of the scale or scale-
beam respectively, whilst the opening of the cut-off gate is effected by the return
motion of the emptied receptacle, substantially as and for the purpose set
forth.
3. In automatic weighing machines of the class herein described the com-
bination of a supply reducing flap resting upon or being supported by the scale
beam or suitable arms of the hangers of the receptacle and adapted to be closed
and opened directly by the downward or upward motion of the scale beam or
the said hangers, and of a cut-off gate adapted to be opened by means of a lever
arm operated by the return motion of the emptied receptacle, substantially as
and for the purpose set forth.
4. In automatic weighing machines the combination of a supply reducing
flap (g) provided with bearing or friction rollers () of hangers (a) having
arms (a) provided with suitable bearing or supporting faces for the said friction
rollers, of a cut-off gate (h) provided with a pin (a) or the like, of a lever-arm (m)
adapted to work or act against the said pin, and of a projection (o) or the like
attached to the receptacle and adapted to engage the said lever-arm, substantially
as and for the purpose set forth.
Dated this (th day of Cintawhan 1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.