Improvements in and relating to Weighing-apparatus, chiefly designed for Granular and Pulverulent Materials.
Year: 1894

page_text: Date of Application, 21st June, 1894
Complete Specification Left, 21st Mar., 1895-Accepted, 18th May, 1895
[Communicated from abroad by Louis BERTHON, of 31, Rue de l'Hôtel-de-Ville,
Lyon, in the Republic of France, Gentleman.]
Improvements in and relating to Weighing-apparatus, chiefly
designed for Granular and Pulverulent Materials.
I, HENRY HARRIS LAKE, of the Firm of Haseltine Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby
declare the nature of this invention to be as follows:-
This invention relates to weighing apparatus chiefly designed for granular and
pulverulent materials.
The improved apparatus differs especially from the automatic balances or
weighing apparatus heretofore employed by the independence of its beam which is
never subject to any friction, and by an arrangement of its mechanism which
causes the passage into the scale wherein the weighing takes place of a very large
current of material at the commencement of the operation and a very small current
at the end, which enables the introduction of the material to take place rapidly
at first and to finish in a very delicate manner and with all the desirable precision;
and lastly by the use of an index which enables the exactitude of the operation of
this apparatus to be constantly watched.
:
This apparatus comprises an ordinary balance whose beam having equal arms.
(or 1:10 or 1 100) is supported by a knife-edge suspended from a horizontal
lever. One of its scales designed for the weights carries at its point of suspension
on the beam a ring, and at its lower part a point.
The other scale designed for the material to be weighed constitutes by a box
wherein each weighing operation is effected according to the weight placed in the
other scale before being discharged through its slide into an outlet pipe. This
slide, which must be opened automatically at the end of each weighing operation
in order to allow the box to be emptied and then to be closed again for retaining
the material for the next weighing operation, carries for this purpose upon its
axis a helical spring and two fingers forming a fork which acting in combination
with other parts serve to keep the said slide alternately closed and open.
An index is fixed to the beam of the balance to indicate whether the weighing
operations, which are added up by a counter, are exact.
Two hoppers are placed one in the other and arranged above the said box in
order to let the material flow directly into the same, such material being introduced
through a suitable pipe.
The upper hopper has two openings, the smallest of which is always open and
allows the passage of only a small stream or jet of material which flows continually ;
the other opening is much larger and allows the passage in an intermittent manner
of a large stream or jet of material. These two currents of material differing in
power have the effect of rapidly filling the box by the large jet up to the moment
when the weighing operation is nearly complete, and terminating it by the small
jet with great precision; setting in operation certain parts which serve for the
discharge of this weighed material; and putting back in their place for the next
weighing operation all the parts which have been displaced.
A pivoted valve is provided at the opening which gives the large jet, and one
of its uprights possesses a slot by means of which it is operated.

page_text: A lever suspended from a fixed rod serves to close the said valve which
allows the passage of the large jet. The right-hand arm of this lever carries a
counter-weight, while a rod, suspended near the fulcrum from its other arm,
supports the principal benin of the balance with all its accessories and all its
charges. A knob fixed at its left-hand extremity and adapted to slide in the slot
of the said valve causes it to open every time the lever inclines to the right and
to close when it inclines to the left. Owing to this horizontal lever the sinall jet
can operate alone at the end of each weighing operation.
When the material arrives in the box its weight charges as the same time the
beam and the horizontal lever and tends progressively to raise the weight on their
right-hand arms.
If the resistance of the counter-weight on the lever is less than that of the
weighted scale the former will be raised by the material before the second; the
lever will therefore tremble before the beam, and the pivoted valve, which
suppresses the large jet and which is operated by the said lever, will be closed
before a second pivoted valve which terminates the weighing operation and is
actuated by the beam. It is thus by the power of the counter-weight and by the
position given to it upon the right hand arm of the horizontal lever that the first
valve may be closed at any given moment of the weighing and consequently before
the latter is finished.
The second valve is placed at the opening of the lower hopper through which
the large and small jets pass, and which is closed at the moment when the weighing
is finished. This second valve carries near its pivot a nut with two notches; the
upper notch serves to keep the valve open while the weighing is effected, and the
lower notch is designed to keep the valve closed while the balance is in equilibrium
or while the box is emptied. The closing of this valve takes place by the aid of n
pawl which is constantly pushed by a spring against the lower tooth of the nut of
this second valve in order to engage with it at the desired moment. This valve
carries a square which extending from its axis is articulated at its opposite
extremity to a rod serving to actunte it.
n
A horizontal rod sliding in two supports terminates on the right in a head and
on the left in a hook engaging with the upper notch in the nut of the second valve.
A spring constantly tends to move the said rod back to the right, so that the hook
of the rod will keep the valve open.
A horizontal cage open on the left is suspended by a stirrup from the frame of
the apparatus. This enge, which terminates on the right in a rod traversing the
ring at the top of the suspension ring of the scale for the weights, can make small
oscillatory movements limited above and below by stops.
In this cage is enclosed a metallic ball adapted to roll freely from one to the
other of its extremities each time the cage changes ita inclination. When the
latter inclines to the right the ball remains at rest, that is to say at the right-hand
el of the cage, but when it inclines to the lett the ball rolls in this direction and
strikes the head of the rod, thereby disengaging the second valve and causing it
to be closed.
its
A nut placed upon this rod serves to put the cage nearly in equilibrium upon
axes of suspension so that the ball has a slight tendency to roll to the left as soon
as the aforesaid rod is left to itself.
The disengagement of the second valve effected by the shock of the hall against
The head of the rod may likewise be produced by the aid of a hammer terminating
in a square which like the said rod engages with the suspension ring of the scale
in order to be operated in the same manier by the displacement of this ring.
For automatically opening or closing the before-mentioned slide of the box use
is made of a vertical" rod pivoted upon an axis fixed to the box. This rod
terminates at its upper part in a fork the two points of which are bent horizontally
at a right angle. At its lower part this vertical rod has two notches with
which engages alternately one or the other of the before-mentioned fingers on the
slide,

page_text: In the second hopper is a semicircular box formed of two distinct troughs connected
together by the bottom. These two troughs which make half a revolution round
an axis traversing the said hopper have each on the side opposite to their bottom an
opening designed to receive alternately the material from the small jet according
as one or the other is at this moment at the top. On the outside of the hopper
is fixed upon the said axis a hammer which is carried away and which turns.
alternately to the right and to the left in each half revolution of the box with
troughs.
A butterfly or metallic plate which, being pivoted upon au axis, inclines
alternately to the right or left and has for its object, according to the direction of
its inclination, to direct the small jet running upon it through the opening in the
bottom of the upper hopper, now into the lower hopper and now into one or the
other trough of the before-mentioned semicircular box.
At the extremity of each horizontal branch of a large T-shaped piece pivoted
at its upper part is provided a head upon which a hammer strikes alternately in
each half revolution of the box with troughs.
Two small springs placed below each head cause the long arm of this T-shaped
piece to return to the vertical position after each blow of the said hammer. Two other
vertical springs fixed to the before-mentioned box move the said pivoted rod back
to the vertical position in order to isolate its two points from the lower arm of
the large T-shaped piece at the moment when the weighing is finished and to
prevent this operation from disturbing the oscillation of the principal beam of the
balance.
This T-shaped piece carries also upon its vertical arm a knob designed to act
upon the before mentioned pawl in order to disengage it.
As the vertical rod of this T-shaped piece is displaced between the two bent
branches of the pivoted rod it will repeat alternatively upon one or the other of
these branches the shock which one of its horizontal branches has received from
the hammer, which shock being transmitted to the lower part of the pivoted rod
causes the opening or closing of the slide.
A lung curved rod is fixed to a spring and articulated to the square of the
second valve and to the extremity of the said butterfly; then it is prolonged for
actuating a counter placed upon the apparatus to register the number of weighing
operations.
A spring fixed to this curved rod has for its object to raise the crank of the
counter, the right-hand wing of the butterfly and the square of the valve.
For facilitating the explanation of its mode of operation the apparatus is
supposed to be at the commencement of an operation, that is to say before any
weight is placed in the balance, and then the scale for the weights and the box
constituting the balance are in equilibrium; the cage is inclined to the left and
its ball rests against the head of the push rod; the slide at the bottom of the box
is closed by the aid of its spring and one of its fingers which engages with the
right-hand notch in the vertical lever, the two valves of the upper and lower
hoppers are then open, the first being kept in this position by the counter-weight
on the horizontal lever, and the second by the look of the horizontal rod pushed
to the right by its spring; the hammer is on the right of its axis; while the
butterfly is inclined from left to right.
All these parts being in the before-mentioned position, if the weight corre-
sponding to the material to be weighed is placed in the scale it will immediately
lower the beam to the right, carrying away in its descent the ring which oscillates
the cage, thereby bringing the ball to the right against the end of its cage.
By reason of the descent of the scale its appendix or projection bearing upon the
curved rod gives to the square of the second valve a tendency to descend as soon as
its nut is disengaged from the hook on the push rod.
In these conditions the apparatus is ready to operate. If then the material to
be weighed is caused to arrive through the inlet pipe in the upper hopper it flows
simultaneously through the small opening which gives the small jet and through

page_text: the tube which gives the large jet. These two jets of material meet at the bottom
of the lower hopper where they fall, one directly and the other after having
struck against the butterfly which throws it back to the right, and causes it to
avoid the upper trough of the semi-circular box.
The second valve being open the box is filled rapidly, but when the material
has reached the weight at which the large jet shall cense to flow and which has
Been regulated beforehand by means of the counter-weight on the left arm of the
horizontal lever this arm is lowered, and the knob fixed at its extremity as it is
displaced in the slot of the first valve will close the latter, thus stopping entirely
the large jet.
From this moment the small jet flows alone until the material has its final weight.
As soon as this weight is reached the box is set in equilibrium with the weighted
scale. In this movement the right arm of the beam is raised, the ring liberates
the oscillating rod of the cage which by its natural tendency then inclines to the
left, which causes the ball to roll to the same side. Then the latter strikes the
head of the push rod and the shock causes the nut to unhook from the second
valve which, by its weight and with the aid of the spring which raises its square
and the curved rod, turns and closes the orifice at the bottom of the lower hopper,
thereby abruptly interrupting the arrival of any material in the box.
Вис
The weighing is then terminated and if it is accurate the two scales, being in
perfect equilibrium, begin to oscillate like those of an ordinary balance.
there comes a time for the stoppage which enables the index to be observed.
When the scale for the weights is raised by the material and when its projection
ceases to bear upon the curved rod, the latter, being raised by the action of its
spring, causes the butterfly to incline from right to left, which has the effect of
directing the small jet into the trough whose opening is then turned upwards.
Now while this trough fills and before the hammer has opened the slide at the
buttom of the box some seconds pass during which the index has time to show
whether the weight of the material is exact.
As the curved rod moves upwards it also raises the square of the second valve,
thus bringing the lower tooth of its nut in engagement with that of the pawl; on
the other hand its prolongation which joins the counter raises the pawl of an
interior ratchet one tooth and causes the counter to advance one unit when the
curved rod is lowered again,
The material weighed being completed in the box as explained it has now to be
discharged by the slide. At the moment when the balance commences to operate,
the hammer is on the right of its axis and the box with troughs on the left, while
as the curved rod rises at the moment when the scale for the weights censés to press
thereon it has caused the butterfly to turn from right to left. In this position the
trough is turned upwards and the butterfly directs into its opening the small jet
which flows without interruption.
When this trough is sufficiently filled for enabling its load to raise the hammer
it makes half a revolution upon its axis, which has the effect of discharging the
material contained in the lower hopper and then turning upwards the hammer which
will strike the left head of the T-shaped piece which by this shock causes its
lower branch to incline from left to right. In this inclining movement the said
lower branch strikes on the right hand point of the vertical lever, the lower notch
of which abandons the right finger which kept the slide closed. The weight
of the grain which bears upon this slide then causes the spring to yield and
the grain flows into the pipe placed below and designed to discharge the weighed
material.
As the box discharges its material the scale for the weights is pressed down
by the whole force of the latter. In this movement the suspension ring bears
again проп the
cage rod and inclines the cage to the right, which brings the ball
10 the right in order that it may be ready to depart again when the cage is inclined
to the left; the appendix or projection on the scale for the weights rests again
upon the curved rod for raising the second valve as soon as the hook may abandon

page_text: :
it the horizontal lever whose short arm has been freed from the whole weight of
the material is lowered to the right under the action of the counter-weight,
which consequently raises the left arm of this lever whose knob then slides in
the slot of the first valve and raises it automatically.
For continuing the work and effecting a second weighing operation it will be
understood that it is necessary to close the slide at the bottom of the box. This
is obtained by means of the small jet. This jet has not ceased to flow and at the
end of the weighing operation just finished the butterfly has changed its position,
having been inclined from right to left. In order to open the slide the system of
troughs and of the hammer has made half a revolution; in this movement the
opening of one trough is placed directly below the butterfly which then diverts the
material into the same. From this it follows that as soon as this trough is
sufficiently charged it turns a second time upon itself, is emptied and by its hammer
strikes the right head of the T-piece, the lower branch of which then strikes the
bent left point of the forked vertical lever. This shock disengages the lower finger
which kept the slide open, and the latter by the action of its spring rises, is closed
and its finger engaging with the right hand notch in the vertical rod prevents it
from yielding to the material which arrives.
By the same blow of the hammer the vertical branch of the T-piece by its knob
pushes the shaft of the pawl to the left whose tooth is disengaged from the nut of
the second valve. The latter becoming free rises and opens under the action
of the curved rod; in this movement the other notch in the nut is again caused
to engage with the hook of the push rod until the latter is again struck by
the ball.
After all these movements the two valves and slide, the butterfly and the
hammer have again taken their original position and the material recommencing
to flow into the box, a second weighing operation takes place and is registered
by the counter, a third succeeds it, then a fourth and so on without the least
interruption.
This apparatus is enclosed in a box of sheet metal which is locked with a key
and protects it from unauthorized handling; a window enables the operation of
the index to be watched.
By slightly modifying this apparatus it may also be used for liquids.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in and relating to Weighing-apparatus, chiefly
designed for Granular and Pulverulent Materials.
1, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, 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 weighing apparatus chiefly designed for granular and
Fulverulent materials.
The improved apparatus differs especially from the automatic balances or
weighing apparatus heretofore employed by the independence of its beam which
is never subject to any friction, and by an arrangement of its mechanism which
causes the passage into the scale wherein the weighing takes place of a very large
stream or jet of material at the commencement of the operation and a very small
stream or jet at the end, which enables the introduction of the material to take

page_text: place rapidly at first and to finish in a very delicate manner and with all the
desirable precision; and lastly by the use of an index which enables the exactitude
of the operation of this apparatus to be constantly watched.
In the accompanying drawing
Figure 1 represents a side elevation of my improved weighing apparatus.
Figure 2 is a section of two hoppers.
Figure 3 shows a hammer mechanism.
This weighing apparatus comprises an ordinary balance whose beam 1 having
equal arms (ar 1:10 or 1:100) is supported by a knife-edge 2 suspended at 3'
from a lever 4. One of its scales 5 designed for the weights carries above its
point of suspension on the beam a ring 6 and at its lower part a point or projection 7
the use of which will be hereinafter stated.
The other scale designed for the material to be weighed constitutes a box a
wherein each weighing operation is effected according to the weight placed in the
other scale 5 before being discharged through its valve C into an outlet pipe.
This valve C, which must be opened automatically at the end of each weighing
operation in order to allow the box 5 to be emptied and then to be closed again
for retaining the material for the next weighing operation, carries for this purpose
upon its axis a helical spring 28 and two fingers forming a fork 29 and 29'
which acting in combination with other parts hereinafter described serve to keep
the said valve alternately closed and open.
An index 1' is fixed to the beam of the balance to indicate whether the weighing
operations, which are added up by a counter 43, are exact.
Two hoppers 9 and 10 are placed one in the other and arranged above the
said box 5 in order to let the material flow directly into the same, such material
being introduced through a pipe 46.
The upper hopper 9 has two openings, the smallest of which 9' is always open
and allows the passage of only a small stream or jet of material which flows
continually the other opening 911 is much larger and allows the passage in an
intermittent manner of a large stream or jet of material. These two jets of
material differing in power have the effect of rapidly filling the box by the large
jet up to the moment when the weighing operation is nearly complete, and
terminating it by the small jet with great precision; setting in operation certain
parts hereinafter described which serve for the discharge of this weighed material;
and returning all the parts which have been displaced to their original positions
ready for the next weighing operation.
A pivoted valve A is provided at the opening which gives the large jet, and
one of its uprights possesses a slot by means of which it is operated as hereinafter
set forth.
A lever 4 suspended from a fixed rod 24 surves to close the valve A which
controls the passage of the large jet. The right-hand arm of this lever carries a
counter-weight 25, while a rod 26, suspended near the fulcrum from its other
arm, supports the principal beam of the balance with all its accessories and all
its charges. A knob or pin 27 fixed at its left-hand extremity and adapted to
slide in the slot of the valve A causes it to open every time the lever inclines to
the right and to close when it inclines to the left. Owing to this horizontal lever
the small jet can operate alone at the end of each weighing operation.
When the material arrives in the box 5 its weight charges at the same time
the bean and the lever 4 and tends progressively to raise the weight on their
right-hand arms.
If the resistance of the counter-weight 25 on the lever is less than that of the
weighted senle 5 the former will be raised by the material before the second; the
lever will therefore tremble before the bean and the pivoted valve A which
suppresses the large jet and which is operated by the said lever 4, will be closed
before the second pivoted valve B which terminates the weighing operation and is
actuated by the beam 1. It is thus by the power of the counter weight 25 and by
the position given to it upon the right hand arm of the horizontal lever + that the

page_text: first valve A may be closed at any given moment of the weighing and consequently
before the latter is finished.
The second valve B is placed at the opening of the lower hopper 10 through
which the large and small jets pass, and which is closed at the moment when the
weighing is finished. This second valve carries near its pivot a nut or disc 17¹
with two notches; the upper notch serves to keep the valve open while the weighing
is effected, and the lower notch is designed to keep the valve closed while the
balance is in equilibrium or while the box is emptied. The closing of this valve
takes place by the aid of a pawl 18 which, being pivoted at 181, is constantly pushed
by a spring 19 against the lower tooth of the disc of this second valve B in order
to engage with it at the desired moment. This valve B carries a lever which
extending from its axis is articulated at its opposite extremity 42 to a rod 8 serving
to actuate it as hereinafter stated.
1
An horizontal rod 15 sliding in two supports 16 terminates on the right in
head 15 and on the left in a hook 17 engaging with the upper notch 171 of the
disc 17 of the second valve B. A spring 22 constantly tends to move the said
rod 15 back to the right, so that the hook of the rod will keep the valve open as in
the position indicated in Figure 1.
An horizontal cage 13 open on the left is suspended by a stirrup 14 from the
frame of the apparatus. This cage, which terminates on the right in a rod 20
traversing the ring 6 at the top of the suspension ring of the scale, for the
weights, can make small oscillatory movements limited above and below by
stops 47 and 48.
In this cage is enclosed a metallic ball 12 adapted to roll freely from one to the
other of its extremities cach time the cage changes its inclination. When the latter
inclines to the right the ball remains at rest, that is to say at the right-hand end of
the cage 13, but when it inclines to the left the ball rolls in this direction and
strikes the head 15 of the rod 15, thereby disengaging the second valve B and
causing it to be closed.
A nut 21 placed upon this rod 20 serves to put the cage nearly in equilibrium
upon its axes of suspension so that the ball has a slight tendency to roll to the
left as soon as the rod 20 is left to itself.
The disengagement of the second valve B effected as first stated by the shock of
the ball 12 against the head of the rod 15', may likewise be produced as shown in
Figure 3 by the aid of a hammer 49 articulated at 49' and terminating in a
lever 50 which like the said rod 20 engages with the ring 6 of the scale in order
to be operated in the same manner by the displacement of this ring.
For automatically opening or closing the before-mentioned valve C of the box 5,
use is made of a vertical rod 30 pivoted at 30' upon an axis fixed to the box. 5.
This rod terminates at its upper part in a fork the two points 31 and 31' of which
are bent horizontally at a right angle. At its lower part this vertical rod 30 has
two notches with which engages alternately in the manner hereinafter set forth one
or the other of the before-mentioned fingers 29 29' on the valve C.
In the second hopper 10 is a semicircular box formed of two distinct
troughs 38, 35 connected together by the bottom. These two troughs which make
half a revolution round an axis 39 traversing the said hopper 10 have each on the
side opposite to their bottom an opening designed to receive alternately the material
from the small jet according as one or the other is at this moment at the top. On
the outside of the hopper 10 is fixed upon the said axis 39 a hammer 34 which is
carried away and which turus alternately to the right and to the left in each half
revolution of the box with troughs.
A butterfly or metallic plate 40 is pivoted upon an axis 40', inclines alternately
to the right or left and has for its object, according to the direction of its inclination
to direct the small jet running upon it through the opening 91 in the bottom of
the upper hopper now into the lower hopper 10 as indicated by dotted lines in
Figure 1 and now into one or the other trough of the before-mentioned semicircular
box as indicated in Figure 2.

page_text: At the extremity of each horizontal branch of a large T-shaped piece 32 pivoted
at its upper part 32 is provided a head 33 33' upon which the aforesaid hammer 34
strikes alternately in each half revolution of the box.
Two small springs 35 placed below each head 33 33' cause the long arm of this
Tshaped piece 32 to return to the vertical position after each blow of the said
hammer 34. Two other vertical springs 36 fixed to the box 5 by the axis 30'
move the said pivoted rod 30 back to the vertical position in order to isolate its
two points from the lower arm of the large T shaped piece 32 at the moment when
the weighing is finished and to prevent this operation from disturbing the oscillation
of the principal beam 1 of the balance.
This T-shaped piece 32 carries also upon its vertical arm a knob 44 designed to
net upon the beforementioned pawl 18 in order to disengage it.
As the vertical rod of this T-shaped piece is displaced between the two hent
branches 31 31 of the pivoted rod it will repeat alternatively upon one or the other
of these branches the shock which one of its horizontal branches has received from
the hammer 34, which shock being transmitted to the lower part of the pivoted
rod 30 causes the opening or closing of the valve C.
A long curved rod S is fixed to a spring 41 and articulated at 42 to the lever of
the second valve B. and to the extremity of the butterfly 40; then it is prolonged
for netuating a counter 43 placed upon the apparatus to register the number of
weighing operations.
The spring 41 fixed to this rod 8 has for its object to raise the crank of the
counter, the right-hand wing of the butterfly 40 and the lever of the valve B.
For facilitating the explanation of its mode of operation the position of the parts
are supposed to be at the commencement of an operation, as indicated in Figure 1
that is to say before any weight is placed in the balance, and then the scale 5' for
the weights and the box 5 constituting the balance are in equilibrium: the cage 13
is inclined to the left and its ball 12 rests against the head 15 of the push rod 15;
the valve at the bottom of the box 5 is closed by the aid of its spring 28 and one
of its fingers 29 which engages with the right-hand notch in the vertical lever 30,
the two valves A and B of the upper and lower hoppers 9 and 10 are then open.
the first being kept in this position by the counter-weight 25 on the horizontal
lever 4, and the second by the hook 17 of the horizontal rod 15 pushed to the right
by its spring 22; the hammer 34 is on the right of its axis; while the butterfly 40
is inclined from left to right.
All these parts being in the before-mentioned position, if the weight corresponding
to the material to be weighed is placed in the scale it will immediately lower the
beam to the right, carrying away in its descent the ring 6 which oscillates the
cage 13, thereby bringing the ball 12 to the right against the end of its cage.
By reason of the descent of the scale 5 its appendix or projection 7 bearing upon
the curved rod 8, gives to the lever of the second valve B a tendency to descend
as soon as its nut is disengaged from the hook 17 on the push rod.
In these conditions the apparatus is ready to operate. If then the material to
he weighed is caused to arrive through the inlet pipe 46 in the upper hopper 9 it
flows simultaneously through the small opening 9 which gives the small jet and
through the tube 9 which gives the large jet. These two jets of material meet at
the bottom of the lower hopper 10 where they fall, one directly and the other after
having struck against the butterfly 40 which throws it back to the right, and causes
it.10 avoid the upper trough 38 of the semi-circular box as shown in Figure 1.
The second valve B being open the box 5 is filled rapidly, but when the material
has reached the weight at which the large jet shall cease to flow and which has
been regulated beforehand by means of the counter weight 25, the left arm of the
horizontal lever 4 is lowered, and the knob or pin 27 fixed at its extremity as it is
displaced in the slot of the valve A will close the latter, thus stopping entirely the
large jet.
From this moment the small jet flows alone until the material has its final weight.
As soon as this weight is reached the box 5 is set in equilibrium with the weighted

page_text: scale 5. In this movement the right arm of the beam 1 is raised the ring 6
liberates the oscillating rod 20 of the cage which by its natural tendency then
inclines to the left, which causes the ball to roll to the same side. Then the latter
strikes the head 15¹ of the push rod 15 and the shock causes the tooth of the nut
or disc to unhook from the second valve B which, by its weight and with the aid
of the spring which raises its lever and the curved rod 8, turns and closes the
orifice at the bottom of the lower hopper 10, thereby abruptly interrupting the
arrival of any material into the box 5.
The weighing is then terminated and if it is accurate the two scales, 5 and 51
being in perfect equilibrium, begin to oscillate like those of an ordinary balance
and when such oscillation is finished it enables the index 1' to be observed.
When the scale for the weights is raised by the material and when its projection 7
ceases to bear upon the curved rod 8, the latter being raised by the action of its
spring, causes the butterfly to incline from right to left, which has the effect of
directing the small jet into the trough 38 whose opening is then turned upwards.
Now while this trough fills and before the hammer has opened the valve Ċ at the
bottom of the box some seconds pass during which the index has time to show
whether the weight of the material is exact.
As the curved rod 8 moves upwards it also raises the lever of the second valve B,
thus bringing the lower tooth of its disc in engagement with that of the pawl 18;
on the other hand its prolongation which joins the counter 43 raises the pawl of an
interior ratchet one tooth and causes the counter to advance one unit when the
curved rod 8 is lowered again.
The material weighed being completed in the box 5 as explained it has now to
be discharged by the valve C. At the moment when the balance commences to
operate, the hammer 34 is on the right of its axis and the box with troughs on the
left, while as the curved rod 8 rises at the moment when the scale for the weights
ceases to press thereon it has caused the butterfly to turn from right to left.
this position the trough 38 is turned upwards and the butterfly directs into its
opening the small jet which flows without interruption see Figure 2.
In
When this trough is sufficiently filled for enabling its load to raise the hammer 34
it makes half a revolution upon its axis, which has the effect of discharging the
material contained in the lower hopper 10 and then turning upwards the hammer
which will strike the left head 33 of the T-shaped piece 32 which by this shock
causes its lower branch to incline from left to right. In this inclining movement
the said lower branch strikes on the right hand point 31' of the vertical lever 30
the lower notch of which abandons the right finger 29 which kept the valve C
closed. The weight of the grain which bears upon this valve then causes the
spring 28 to yield and the grain flows into the pipe placed below and designed to
discharge the weighed material.
As the box 5 discharges its material the scale 5' for the weights is pressed down
by the whole force of the latter. In this movement the suspension ring 6 bears
again upon the
cage rod 20 and inclines the cage to the right, which brings the
ball to the right in order that it may be ready to act again when the cage is
inclined to the left; the appendix or projection 7 on the scale 5' for the weights
rests again upon the curved rod 8 for raising the valve B as soon as the hook 17
may abandon it; the horizontal lever 4 whose short arm has been freed from the
whole weight of the material is lowered to the right under the action of the counter-
weight 25, which consequently raises the left arm of this lever whose knob or
pin 27 then slides in the slot of the valve A and raises it automatically.
For continuing the work and effecting a second weighing operation it will be
understood that it is necessary to close the valve C at the bottom of the box, which
is obtained by means of the small jet. This jet has not ceased to flow and at the
end of the weighing operation just finished the butterfly 40 has changed its position,
having been inclined from right to left. In order to open the valve C the system
of troughs and of the hammer has made a half revolution; in this movement the
opening of one trough 35 is placed directly below the butterfly 40 which then
B

page_text: This
diverts the material into the same. From this it follows that as soon as this
trough 38 is sufficiently charged it turns a second time upon itself, is emptied and
by its hammer strikes the right head 33' of the T-piece 32, the lower branch of
which then strikes the bent left point 31 of the forked vertical lever 30.
shock disengages the lower finger 291 which kept the valve C open, and the latter
by the action of its spring 28 rises, is closed and its finger 29 engaging with the
right hand notch in the vertical rod 30 prevents it from yielding to the material
which arrives.
By the same blow of the hammer the vertical branch of the T-piece 32 by its
knob 44 pushes the shaft of the pawl 18 to the left, whose tooth is disengaged from
the dise of the valve B. The latter becoming free rises, and opens under the
action of the curved rod 8; in this movement the other notch in the not is again
caused to engage with the hook 17 of the push 10d 15 until the latter is again
struck by the ball 12.
After all these movements the two valves A, B and valve slide C, the butterfly 40
and the hammer 34 have again taken their original position and the material
recommencing to How into the box 5, a second weighing operation takes place and
is registered by the counter, in the saine manner.
This apparatus is enclosed in a box of sheet metal which is locked with a key
and protects it from unauthorized handling; a window enables the operation of the
index to be watched.
By slightly modifying this apparatus it may also be used for liquids.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
First. In weighing apparatus the arrangement of a hopper receiving the material
to be weighed and discharging it through two openings of different dimensions, the
largest opening being designed for rapidly introducing the bulk of the material,
and the smallest opening for adding the complement in a delicate manner, and for
actuating the mechanical parts which serve for discharging the material and
causing these parts to return to the position suitable for a fresh weighing operation,
substantially ns herein set forth.
Second. In weighing apparatus the arrangement of a special valve A, closing
before the end of each weighing operation, diminishes and regulates the fall of the
product and enables the operation to be terminated with extreme delicacy,
substantially as herein set forth.
Third. In weighing apparatus the arrangement serving to render the beam of
the weighing apparatus entirely independent of the automatic mechanism, which
arrangement consists especially in the employment either of a ball which is
displaced in the manner set forth or of a hammer (Figure 3) which will strike the
hend 15 at the moment when the beam abandons its point of support and
put in
equilibrium, these modifications having both for their object to close the valve B
through which the material flows and to terminate the weighing operation,
substantially as herein set forth.
Fourth. In weighing apparatus the combination, with the beam. of an index
serving to constantly verify, during the course of a series of weighing operations,
the accuracy of each of them without any interruption of the work, substantially
as herein set forth.
Fifth. In weighing apparatus the arrangement, for effecting the discharge of the
weighed material of the butterfly 40, two troughs 38 and 38' and the hammer 31
acting in the manner set forth conjointly with the T shaped piece 32 and the
lever 3 upon the valve C of the box 5 enclosing the weighed material, substantially
as berein set forth.
Sixth. In weighing apparatus the arrangement of a lever 4 which, being carried
by a fixed rod 24, holds suspended near its point of support a rod 26 supporting
the principal beam of the weighing apparatus, the said lever 4 actunting moreover

page_text: by means of a counterweight 25 the valve through which the large jet escapes,
substantially as herein set forth.
Seventh. In weighing apparatus the arrangement of a bent rod 8 upon which
bears when once loaded, the scale 5' of the weighing apparatus, this rod having for
its object to close the valve B, to incline the butterfly 40 to the right or left, and
to actuate the counter, substantially as herein set forth.
Dated this 21st day of March 1895.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.