IMPROVEMENTS IN AUTOMATIC WEIGHING MACHINES FOR WEIGHING GRANULAR AND PULVEROUS SUBSTANCES AND Τοπτης
Year: 1881

page_text: LETTERS PATENT to Carl Reuther, of Hennef, in the Kingdom of Prussia,
Germany, for an Invention of "IMPROVEMENTS IN AUTOMATIC WEIGHING
MACHINES FOR WEIGHING GRANULAR AND PULVEROUS SUBSTANCES AND
Τοπτης "
PROVISIONAL SPECIFICATION left by the said Carl Reuther at the Office
of the Commissioners of Patents on the 16th August 1881.
.
CARL REUTHER, of Hennef, in the Kingdom of Prussia, Germany. " IMPROVE-
MENTS IN AUTOMATIC WEIGHING MACHINES FOR WEIGHING GRANULAR AND
PULVEROUS SUBSTANCES AND LIQUIDS."
This Invention relates to automatic weighing machines for granular or pulverous
substances or liquids which at the same time register the quantities weighed, such
apparatus consisting mainly of a double armed lever or beam having at one end a
receptacle for receiving the substance to be weighed, and at the other end either a
constant weight or a scale for receiving varying weights; secondly, of a feed
mechanism which allows exactly as much of the material to flow into the receptacle
as corresponds to the said weight, and then cuts off the supply, and after removal
of the said charge opens the supply again; lastly, a mechanism for discharging
the said receptacle when filled.
The arrangement of the apparatus for weighing granular or pulverous substances
is as follows:-The beam supported at its fulcrum on knife edges has suspended
on knife edges at its one end a scale for the weights, and at its other end (which is
forked) the receptacle for the grain or other substance to be weighed. Above this
receptacle is fixed a hopper through which the grain is supplied, and whose spout
has two flaps for cutting off the supply; these flaps are situated one below the
other, and are each carried by side arms hung on knife edges as centres, on which
the flaps can swing in a circular path independently of each other, the arms of the
upper flap having however projections that bear against studs on the arms of the
lower flap, so that the movement of the former is governed by that of the latter.
The upper flap has notches in its one edge, and when it is moved so as to cut off
the supply from the shoot, the said edge bears against a surface (by preference a
brush surface) that closes the one side of the space between it and the bottom edge
of the spout, so that the supply aperture is closed, all but the small apertures
formed by the two notches through which the grain continues to flow in two,
611...מ

page_text: thin streams; the second flap then moves down so as to bring its edge over the
lower edge of the brush surface, thus covering the said two notches and entirely
cutting off the supply. For automatically effecting these movements of the flaps
when the receptacle is charged with the exact required quantity of grain, the arms
of the lower flap rests with knife edges upon a rail carried by a lever, that in its
turn rests with knife edges upon a second lever pivotted to the side of the
receptacle and loaded with a weight. The first named, lever has a tail-piece
extending downwards below its fulcrum and connected at its lower end to a link
pivotted to the lower end of the receptacle, which is closed by a hinged bottom.
Assuming both flaps to be open, and the grain to be entering the receptacle from
the hopper, then as the load in the receptacle increases it will sink down somewhat,
thereby lowering the rail on which the knife edges of the lower flap rests. This
will thus be permitted to move down somewhat, and will in its turn allow the
upper flap to approach the closed position, which will be reached shortly before
the receptacle has received its full charge, and on the continued downward motion
of the receptacle the lower flap in its turn closes.
The side arms of the lower flap carry in an angular position beyond their pivots
a weighted arm pivotted thereto and adjustable by a screw thereon, so as in the
open position of the flaps to counter-balance their weight more or less, while when
the lower flap is approaching the closed position the balance weights will have
moved over into such a position relative to the flap's pivots as to have an
increasing tendency to close the flap and maintain it in the closed position. When
the receptacle has received its charge the hinged door thereof is made to open
automatically by means to be presently described, so as to allow the contents to
be discharged, and during such opening a stud on the door comes in contact with
the before mentioned link, to which the tail of the before mentioned lever carrying
the rail is connected, and in throwing the link over into a position beyond its
pivot draws down the lever and rail, so as to bring the latter down away from the
knife edges on the side arms of the lower flap, in which position the lever and rail
are locked, until by the closing motion of the door, after the contents of the
receptacle have been discharged, another stud on the door throws the link over
again into its former position, so that as the receptacle again rises the rail in
bearing against the knife edges of the flap opens this again to allow a fresh charge
to enter the receptacle. For automatically opening the door of the receptacle
when this has received its full charge the door is connected by a link to one arm
of a bell crank lever pivotted to the side of the receptacle, which arm, when the
door is closed, is situated vertically upwards, being held in that position, firstly,
by the other horizontal arm bearing against a stop on the side of the receptacle;
and, secondly, by its connection with the door by means of the link, being such
that a line drawn through the connecting points passes somewhat to that side of
the pivot of the bell-crank on which the horizontal arm is situated, the door being
thus held closed against the weight of the grain resting upon it. When the
receptacle, having received its full charge, descends to a certain point, the hori-
zontal arm of the bell crank comes in contact with a fixed arm, whereby it is
slightly raised, and this motion, in carrying the connection of the vertical arm
with the links holding the door slightly on the other side of the pivot, the door
loses its support, and is forced open by the load of grain, causing the bell crank to
tumble over. When the contents have been discharged a balance weight on the
opposite side of the door's hinge causes the door to close again, thereby bringing
the bell crank back into its original position.
To the one side arm of the lower flap is attached a rod or tappet, which at each
to and fro motion of the flap acts on a counter or registering mechanism of any
suitable known construction, so as to register each charge of grain or other
substance that has been weighed.
It will be seen from the above description that while the receptacle is receiving
its charge it has to bear the downward pressure of the flaps acting against the
supporting rail, but is relieved of this pressure when the filling is completed. The

page_text: object of thus putting an additional load on the receptacle during the filling thereof
is to produce the described downward motion necessary for cutting off the supply
before the full charge has been given, as without this arrangement the balance
would only begin to move when the full charge had already been given, and the
flaps would consequently cut off the supply too late.
The above described construction and action of the weighing machine is modified
as follows for weighing liquids:
The receptacle is divided by a vertical partition into two compartments, and it
rests with horizontal pivots underneath its bottom in a looped suspending rod
hanging upon the balance beam, the receptacle being thus a tumbling one, that is
to say, it is caused to tumble alternately from one side over to the other on its
pivots, thereby alternately presenting the one or other of its compartments to the
charging hopper to be filled, while the other filled compartment empties itself into
a tank below.
The spout of the hopper is closed by two valves, one opening upwards and the
other downwards, both being pivotted to arins on one and the same horizontal
rocking shaft, the partial rotation of which, in one direction or the other, con-
sequently opens or closes both the valves. The rocking shaft carries a horizontal
weighted arm, tending to turn it so as to close the valves, but the arm is arrested
in its descent by a fixed stop, which prevents the valves from being entirely
closed. Below the spout is a pan or scoop arranged and operating in the same
way as the lower flap in the before described arrangement, that is to say, it has an
adjustable balance weight, and its side arms, on which it swings, rest with a knife
edge upon a rail carried by the weighing beam, so that when the beam descends
the rail allows the pan to pass under the spout, and when it ascends it moves it to
one side. The rail also has a stud, which, when the beam is in the raised position,
lifts the before mentioned weighted arm, so as to open the valves, and when it
sinks it allows the arm to nearly close the valves.
Thus the action of the apparatus is as follows:-The balance beam being raised
and the valves open the liquid flows from the hopper into one of the compartments
of the tumbling vessel. When this has nearly received its full charge the beam
begins to sink, and thus allows the valves to close, all but a slight opening per-
mitting two thin streams to pass; the beam continuing to sink it then allows the
pan to pass under the hopper, intercepting momentarily the thin streams, while
the tumbling vessel having received the full charge in the one compartment is
made to tumble over into the opposite position, emptying the compartment into
the tank. The beam now rises again, moving the pan to one side, and opening
the valves again to admit liquid into the other compartment.
The tumbling over of the vessel at the exact moment when it has received its
full charge is insured as follows:-The vessel is connected at its vertical centre
line to one end of a toggle, the other end of which is pivotted to the suspension
bar of the vessel. The toggle is of such a length that when the tumbling vessel is
in either extreme position the links of the toggle are stretched out in a nearly
straight horizontal line, the elbow being sunk to a slight extent below that line, in
which position it is prevented from sinking by a stop on the side of the receptacle.
Thus the latter is prevented from tumbling over by the toggle acting as a strut,
until at the moment when the vessel has received its full charge it, in sinking,
causes the elbow of the toggle to come against a stop, whereby it is pushed up
slightly above the straight horizontal line, whereupon the vessel is free to tumble
over to the other position, carrying the toggle over with it, so as to become locked
in such position again until it has received its next charge.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Carl Reuther in the Great Seal Patent Office on the 14th February
1882.
:.
CARL REUTHER, of Hennef, in the Kingdom of Prussia, Germany.
"IMPROVE-
MENTS IN AUTOMATIC WEIGHING MACHINES FOR WEIGHING GRANULAR AND
PULVEROUS SUBSTANCES AND LIQUIDS."
This Invention relates to automatic weighing machines for granular or pulverous
substances or liquids which at the same time register the quantities weighed, such
apparatus consisting mainly of a double armed lever or beam having at one end
a receptacle for receiving the substance to be weighed, and at the other end either
a constant weight or a scale for receiving varying weights; secondly, of a feed
mechanism which allows exactly as much of the material to flow into the receptacle
as corresponds to the said weight and then cuts off the supply, and after removal
of the said charge opens the supply again; lastly, a mechanism for discharging
receptacle when filled.
Sheets I. and II. of the Drawings shew the construction of the automatic
weighing machine for weighing granular and pulverous substances, such as grain.
Fig. I. shews a side view; Fig. II., a front view; Fig. III., a cross section; Figs.
IV., V., and VI. shew three different positions of the supply regulating mechanism;
Fig. VII. shews the position of the entire apparatus when the receptacle is being
emptied.
A is the weighing beam; B, the receptacle for receiving the material, such as
grain; C, the tray for the weights; D, the feed hopper from which the grain
passes through the spout d into the receptacle B. Below the spout d are two
swinging flaps or slides F and G. The flap F has one, two, or more notches f. f, in
its one edge, and serves to reduce the supply of grain at intervals so that it only
flows through the notches f, f; the flap G which swings beneath F effects
periodically the complete cutting off of the grain supply. The flap F swings on
the fixed axis E, and the flap G swings on two knife edges e, e³, formed on E by
means of the steel side plates g, g'. The plate g¹ has a knife edge Z which rests
on the cup h of a rail H, if the rail H is moved up or down the flap G swings to
and fro on the knife edges e, e'. The flap F has a projection y which rests against
a stud on the side plate g³ of the flap G, so that if this is moved upwards by the
rail H the flap F is carried with it. The downward motion of F is limited by a
pin w fixed to the hopper D; if it rests against this pin its lower edge also rests
against a brush surface d' attached to one edge of the spout d, and thus the flow
of grain from the hopper is stopped with the exception of what continues.to flow
through the notches ff. The rail H rests with its lower end on a knife edge i on
a lever I, which is pivotted at v to the receptacle B, and carries a weight u. A
rod K connects the lever I with a lever L which is pivotted loose upon the axis m
of the hinged door M, by the opening of which the receptacle is emptied. The
door M is connected by a link N with a bell crank lever O, which is pivotted at o
to the receptacle. If the door M is closed the link N and lever O have the relative
position shewn at Fig. I. Assuming the receptacle B to be filled, the downward
pressure on the door cannot force this open, as it will be seen that if a straight
line be drawn connecting the lower end n¹ of the link N with the point o, the
upper end n of N will be situated somewhat to that side of the extension of this
line on which the horizontal arm of the bell crank lever O is situated, which arm
is prevented by a stud t from descending; thus it is only when the lever O is
raised from the stud sufficiently to bring the point n to the other side of the line
ny, o, that the pressure upon the door M will be able to force it open, whereby the

page_text: several parts are brought into the position shewn at Fig. VII. The weight of the
door M is overbalanced by a counterweight M², whereby the door is closed again
as soon as the receptacle B is emptied. If the receptacle B is empty and there are
no weights on the tray C, the weighing beam is in balance, which is shown by the
pointer as on the beam, standing opposite the index at (Fig. III.) on the framing.
If the receptacle B is empty and the tray C loaded with weights the beam will
sink on the weight side until the tray rests on the base plate; in this position,
assuming the lever I to be in the position at Fig. I., the bar H presses with its
cup h upwards against the knife edge Z of the flap G so as to hold both this and
the flap F in the open position, as shewn at Fig. IV. The spout & being now open
the grain flows into the receptacle B; as the latter becomes filled the beam will
begin to move before the vessel has received its full charge, corresponding to the
weights on the tray, because the receptacle is loaded with the additional weight of
the flaps F, G, resting with the knife edge Z upon the bar H. The beam with the
receptacle will descend until the flap F rests against the stud w, as at Fig. V.,
whereupon the receptacle and beam will be relieved of the weight of this flap, the
weight of G however still bearing upon them; in this position the flow of grain is
cut off, all but the small streams issuing through the notches f,f, and this continued
small flow will cause the receptacle and beam to sink still further, whereupon the
flap G will also descend so as to pass with its edge over the edge of the brush
surface d, and thus entirely intercept the flow of grain, as shewn at Fig. VI. To
the side plate g, is pivotted at p a bell crank lever P having a weight pl; this
lever P is so arranged that while the small streams are issuing through the
notches ff, the centre of gravity of the flap G with all its connections is situated
above the knife edges e, e¹, and only slightly to the right of the vertical line passing
through e; by this means, as the flap G moves down to cut off the supply, its
action upon the weighing beam will become increased, as the leverage of the
centre of gravity of the flap increases during its motion so as to impart rapid
downward motion to the beam on the side of the receptacle. As the receptacle
sinks the horizontal arm of the bell crank lever O comes in contact with an arm or
stop on the framing of the machine, whereby it is raised, bringing the point n
to the right of the line passing through n₁, o, and the door M being now free to
yield to the pressure of the contents of B the latter will become emptied.
The door M has two studs 1 and 2, of which the former presses on the opening
of the door against the lever L, thereby throwing it together with the rod K,
lever I, and rod h into the position shewn at Fig. VII. In this position the several
parts remain until the receptacle is emptied, whereupon the door M in closing
causes the stud l to bear against the lever L, so as to throw it over into its former
position, thereby allowing the weight u to bring the parts H, I, K, and L into the
position shewn at Fig. I. If in the position at Fig. VII. a straight line be drawn
through k, k', this line will pass slightly to the right of the pivot m of the door M,
so that the weight O tends to move the point K still further to the right, this being
however prevented by the lever L bearing against a stud t. As soon as the
receptacle B is emptied, the weighing bean being freed from the weight of the
charge of grain will at once swing back into its original position. The opening
of the two supply flaps will however not take place until the pin l' has thrown
the lever Lover again, that is, until the door M has closed the receptacle, because
by the bringing of the parts into the position at Fig. VIL, on the opening of the
door, the bar B with its cup h is moved down a greater distance than that through
which the beam passes in ascending. It should be noted that the weight on the
lever I is sufficiently heavy to overcome the resistance which the flaps F and G
offer to the upward or opening movement. The beam A has all the properties of a
regulation weighing beam. The two arms are perfectly equal; the double knife
edges a¹, a, and a lie in one and the same plane; the centre of gravity of the
beam is situated below the line connecting the two knife edges. If therefore the
empty receptacle is of the same weight as the empty weight tray, the tongue a³ of .

page_text: .
the beam will be exactly in the central position. If weights are placed in the tray,
and the receptacle B is filled to such an extent with grain as is equal to the
weights, the tongue a³ will also be accurately central. The complete cutting off
of the supply to the receptacle B must not take place only at the moment when
the weight of the charge is exactly equal to the weights on the tray, because in
that case an incorrect result would be obtained, that is, the supply of grain to each
charge would be too great, because, firstly, the cutting off cannot take place
instantaneously, but always requires an appreciable amount of time, during which
grain will continue to flow down into the weighed quantity in the receptacle; and,
secondly, even after the cutting off is completed a stream of grain is still falling
through the space between the flap G and the surface of the grain in the receptacle,
which also goes to increase the weight of the charge. The complete cutting off of
the supply must therefore be effected before a complete balance has been effected,
and this must be exactly so much in advance as is necessary for the receptacle B
to receive the exact charge equal to the weights on the balance. As already stated,
the receptacle B is loaded during the small supply through the openings f, f, with
the pressure exerted by the flap G upon the cup by the knife edge Z. The
beam will consequently commence to sink on the receptacle side before having
received the full charge, and this exactly as much sooner as corresponds to the
extra-weight put upon it by the flap G. This pressure must be capable of being
readily increased or decreased in order that the weighing machine may be rapidly
adjusted, so that each complete charge shall be exactly equal to the weights on the
tray. The adjustment of this pressure is effected by altering the position of the
weight P relatively to the flap G, whereby of course the position of the centre of
gravity of the whole, namely, the flap G and the weight p₁ is altered. For this
purpose the lever P is cranked, the lower arm having a screw nut p³ pivotted to it,
through which passes a screw p³ carried in lugs g², g³, fixed to the plate g' on each
side of the arm of P. Thus by turning the screw p³ in one direction or the other
une weight p' will be adjusted in position relatively to the flap G. The catch S
serves to put the machine out of aciiuu. If, namely, this catch be moved into the
dotted position, Fig. VII., it catches on the lever I, and consequently although the
door M may be closed the lever I and bar H with cup h cannot return to the
position, Fig. I., and the supply therefore remains cut off. The beam A can now
oscillate with its tongue as playing to either side of the index a* without causing
the cup h to touch the knife edge Z.
If it is desired to ascertain whether the machine is in proper order for weighing
accurately, the beam must be allowed to play, as above described, with the
receptacle B and tray Cempty, the catch being made to hold the lever I, as described,
so that the beam with receptacle and weight tray are free to play to and fro
without coming in contact with the other parts. If it be desired to ascertain
whether the grain charged automatically into the receptacle B is accurately of the
same weight as the weights on the tray C, the arm or stop Q must first be turned
to one side, so as to prevent the bell crank lever O from coming in contact there-
with so as to open the door; also I must be secured by the catch S. If the charge
of grain is exactly equal to the weights, the tongue a³ will stand accurately at the
index a. If this is not the case, the screw p³ must be turned so as to alter the
pressure of the flap G on the beam A, the pressure being increased if the charge of
grain is too heavy (in order that supply inay be cut off sooner), and decreased if
the charge is too light. In the first case therefore the weight p₁ must be moved
more to the right, and in the second case more to the left. By the loading of the
beam with the weight of the flap G no friction produced, as the flap hangs in
knife edges e, e¹, and rests with its weight upon the cup also by means of the
knife edge Z, while the bar H which receives the pressure also rests with the knife
edge on the lever I. The flap is not in contact with any other parts while the
grain is flowing through the openings f, f, and on completion of the charge it
swings freely beneath the brush surface d', and thus intercepts the small streams

page_text: of grain falling throug the openings f. f. If therefore after correct adjustment of
the weight p, the weighing machine is in proper order, so that it correctly fills and
weights one charge, every other subsequent charge will be correct.
The counter T counts each discharge of the receptacle B by being actuated by a
rod or arm attached to the flap G, this connection being however such that no
friction takes place, the arm being made only to come in contact with the counter.
when the flap has cut off the supply. The construction of the weighing machine
shewn on Sheet II. of the Drawings is that intended for weighing fluids.
Fig. I. is a cross section, and Fig. II. a side view of the machine; Fig. III. shews
the position of all the parts during the emptying of the receptacle; Fig. IV. shews
a plan. A is the weighing beam; B, the receptacle for the liquid; C, the weight
tray; D and D¹ two valves; and G, a dished flap or pan, the last three parts
serving to control the passage of the liquid into the receptacle; F is the feed hopper ;
and H, a tank into which the liquid is discharged from the receptacle B, and
whence it flows off through the spout I. The valve D is placed above and the
valve D' below the plate K; both valves are connected to a lever L on an axis
passing through the spout of the hopper and provided outside with a lever N
having a weight u. If the lever N be raised the valves D, D³, are both opened, if
it be lowered they are closed all but a small aperture, determined by the height of
the stop O upon which the lever N rests. If the valves D, D', are open as at
Fig. I. the liquid flows in a strong stream from the hopper F into the receptacle B;
if the lever N rests on the stop O, the valves being slightly open, as described,.
a small stream of liquid will continue to pass through them into the receptacle B.
By placing the valve D above and the, valve D' below the plate K, the pressure of
the liquid upon them and on the lever N is balanced, so that this pressure has no
effect on the action of the machine. The pan G has for its object to intercept
momentarily the small streams issuing through the partly closed valves, namely,
during the time that the partition of the receptacle is passing from the one.
position to the other, as the receptacle tumbles over. The pan G has the same
arrangement as the flap G of the first described machine; it swings upon the knife
edges e, e¹, and it rests with a knife edge Z upon the bar H, which transmits the
pressure to the knife edge i of the beam A. The receptacle D hangs by means of
its axis b in the looned suspension frame P which hangs from the beam A. The
receptacle is divided by a partition a into two perfectly equal compartments, and
it assumes during the operation of the machine alternately two opposite symetrical.
positions, as shewn in Fig. 1. While the one compartment is being filled the other
is being emptied. The receptacle is held in the two positions by means of the
toggle R, S, of which the link R is pivotted by a bolt r to the receptacle, while S
is pivotted by the bolts to the frame P, the two links being connected by a pin v.
The one compartment being filled the receptacle has the tendency to tumble over
to that side; but it is prevented from doing so until the beam has sunk so far as
to cause the projection won the toggle S to come in contact with the stud t on the
bar T, so that by the further descent of the beam the toggle r, v, s, is bent upwards.
The links R, S, rest either upon the pin y or the pin y¹, consequently the toggle
cannot sink downwards. If a straight line be drawn through rand s the point will
be slightly below the line, consequently the filled compartment cannot move over to
the opposite position so as to become emptied until the toggle r, v, 8, is bent upwards
beyond the straight line by coming in contact with the stud t. This being done
the receptacle, together with the links R and S, will move over to the opposite
position. The links R and S can only move over, as described, if they are made
according to certain exact proportions, namely, if a circular arc be struck from b
with a radius b,r, and from s an arc with the radius 8, v, the former arc will
intersect the vertical line passing through and s in the point a, and the last
named one will intersect at the point B. It will be seen that the links can only
move over from one side to the other as the receptacle B oscillates if the length r, v, '
is equal to the length a B, as only in this case can the link R pass the central
position. The receptacle B being empty, and weights being placed on the tray C,

page_text: the knife edge i will press upon the bar H, which will lift the lever N by means
of the pin n and also the pan G by the knife edge Z, and the valves D, D¹, being
moved from their seats the liquid will begin to flow into the one compartment of
the receptacle. Just as in the first arrangement the weighing beam begins to sink
before the full charge has been delivered into the receptacle, the lever N being
free to sink on to the stop O then closes the valves, all but a slight opening
allowing a small stream of the liquid to pass. Immediately afterwards the further
sinking of the beam causes the pan G to move under the spout so as to intercept
this stream. As in the first arrangement the pressure of the pan G+ accelerates the
downward motion of the beam until the projection of the toggle comes in contact
with the stop't, which bends the toggle upwards, and the receptacle then tumbles
over into the opposite position, so as to empty its full compartment. The instant
this takes place the receptacle with the beam begins to rise again, and moving first
the pan G aside and then raising the lever N the liquid at once begins to flow into
the other compartment.
If it be desired to test the machine, this is effected both in the filled and in the
empty condition as follows:-The rail T is moved to one side, so that its stop t
shall not come in contact with the projection w of the toggle, so that this cannot
be bent upwards, thereby preventing the falling over and emptying of the
receptacle. The stop O is also turned to one side, allowing the arm N to completely
close the valves D, D¹, and lastly, the bar H is raised off the knife edges z and i
and is hung on to the beam.
The arrangement of the counter and index of the machine is the same as
described with reference to the first machine.
Having thus described the nature of my Invention, and in what manner the
same is to be performed, I claim,—
First. The use in weighing machines of the kinds above referred to of the flap
or pan G swinging on knife edges e, e¹, and pressing with a knife edge Z upon the
weighing beam.
Second. The use in weighing machines of the kinds above referred to of a
flap or pan G, provided with a weight p or equivalent device for causing the cutting
off of the supply of material to the receptacle B to take place so much in
advance as is required to compensate for the quantity of the material which
falls into the receptacle after the balance of the machine has been established,
as described.
Third. In weighing machines of the kinds above referred to the use of the
flap or pan G for imparting to the beam after the cutting off of the supply the
accelerated motion required for effecting the opening or emptying of the
receptacle.
Fourth. The use in combination with the flap or pan G of the adjustable
tumbling weight p₁ for regulating the exact quantity of material supplied to each
charge of the machine.
Fifth. In combination with the supply flaps of the machine for weighing
granular or pulverous substances the lever I pivotted to the receptacle B and
loaded with a weight u, whereby the opening of the flaps is not directly effected
by the upward motion of the beam, but is made dependent upon the position of
the lever I.
Sixth. In the weighing machine for granular and pulverous substances the
peculiar combination of the bell crank lever O and rod N with the door M for
controlling the opening of the latter.
Seventh. In the weighing machine for granular and pulverous substances the
peculiar combination and action of the bar K and levers I and L operating together
with the studs and ', whereby the lever I and consequently the bar H that
operates on flaps are brought into and maintained in the lowered position while the
door M is open.
Eighth. In the machine for weighing liquids the peculiar arrangement..of the

page_text: two supply valves D, D¹, one above and the other below the feed opening in the
plate K, for the purpose described.
Ninth. In the machine for weighing liquids the use of a receptacle B formed
with two compartments suspended from the weighing beam and arranged to tumble
over into two opposite positions, so that as the one compartment is being filled the
other is being emptied.
Tenth. The use in combination with the tumbling receptacle B of the toggle R, S,
proportioned and operating as described, so that one and the same toggle is capable
of serving for both positions of the receptacle.
In witness whereof, I, the said Carl Reuther, have hereunto set my hand and
seal, this Tenth day of February, in the year of our Lord One thousand
eight hundred and eighty-two.
CARL REUTHER. (L.S.)