Improvements in Automatic Weighing Machines.
Year: 1895

page_text: Date of Application, 23rd Mar., 1895
Complete Specification Left, 23rd Dec., 1895-Accepted, 7th Mar., 1896
Improvements in Automatic Weighing Machines.
I, HENRY POOLEY Junior, of Albion Foundry, Liverpool, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
The class of weighing machines to which this invention has reference, is that in
which granular, or pulverulent, or similar material is supplied from a constant
source of feed into a receptacle-generally called a weighing hopper-in a stream,
the hopper being carried by a weigh beam; and in which, when the full weight
which is desired to be weighed is approached, by the action of the machine itself,
the rate of feed to the hopper is automatically reduced, and then, finally, when the
complete weight is reached, the residual feed is entirely cut off or stopped, and the
weighed contents of the hopper are discharged, the initial or starting positions of
the parts being automatically resumed immediately after such discharge. That is
to say, the machine is of that class, which from a constant source of feed of
granular or pulverulent material will, entirely automatically, weigh and discharge
intermittently and regularly, charges of the material of a given weight.
The chief object of the present invention is to provide a machine of this kind, or
improvements in connection with machinery of this kind, by which, in the first
place, certainty of action, cr correct action, shall be secured, that is to say, a
machine wherein the automaticity of the parts can be safely relied on; secondly,
that in the case of anything of an abnormal form or condition finding its way into
or arising in the supply or in the vessel or receiver into which the machine
discharges, or otherwise, the action of the machine will cease, and the supply of
material to it withheld; thirdly, simplicity of parts that the attention required to
the machine after being set in action is practically nil.; and fourthly, simplicity and
cheapness of construction.
According to this invention, a machine comprises the usual parts common to this
class of machine, namely:-Weigh-beans, supporting at one-the front-end the
weighing hopper, and at the other, the main weights, both of which are suspended
and supported upon knife edges, the beams themselves being supported upon a
frame at either side; a feed hopper or spout supported from said frames, the spout
having a feed cut off valve or device working in connection with it; and a door at
the bottom of the weighing hopper which is opened and afterwards closed, in the
discharging and filling actions, respectively.
According to this invention, as regards the means connected with the operations
of the weighing hopper discharging door, and of its action upon and in relation
with the feed cut off device, these are as follows:-In connection with the main
weight supporting rods or parts of the machine, is a weighted lever, the weight of
which is controlled by that of the main-weight, that is, when the main weights rise,
this second weight can exert its force and come into action, whilst when the main
weights fall, this weight is raised and held out of action. A third weight is used in
connection with the second weight, it being less than the said second weight, and is
acted upon and moved by the second weight, and in connection with this weight or
a lever or device carrying it, the feed cut off device is connected, and there is used
in connection with it a trigger, which is acted upon by the hopper discharging door.
The action of these parts is, that, when the third weight is free, it holds up and
opens the feed cut off device, and then, when the weighing hopper is nearly full, and

page_text: the weigh-beams moved, the action of the main weights is removed from the second
weight lever which presses or moves the third weight, thereby allowing the feed
device to partially close the feed by its own weight, or a weight adapted to come
into action and close it, and at the same time causing the engagement of the
said weight or its lever with the said trigger which is operated upon by the
discharge door. Then, afterwards, when the weighing hopper is returned and
the main weights fall, the second weight is moved from out of action upon, and
prevented from acting upon, the third weight, and just as the discharge door
actually closes and is engaged by its catch or lock, the said third weight is released
by the trigger holding it being knocked out of action by the closing of the door, as
just specified thereupon the said weight lifts the feed device, and opens it, or
allows it to open, fully.
In one and a convenient arrangement, these parts are arranged with the second
weight on a lever supported by the frame, and its back end acted upon by the rods
or parts carrying the main-weights, this lever acting upon and in conjunction with
an upright or inclined rod or crutch extending between levers or arms at the upper
part of the machine carrying the feed cut-off or regulating device, and a lever below
carrying the third weight. Thus, when this third weight, carried by its lever, is
lifted by the second, the crutch or rod leave the feed device levers or arms and
allow it to fall, and vice versa. The third weight, and the trigger acted by the
discharge door are, in one arrangement, all mounted upon the frame of the
machine.
The parts and actions so far described deal only with the first part of the cutting
off action of the feed, and the subsequent full supply, and there remains therefore
the further mode of and mechanism for effecting the complete cutting off of the
feed, and that or those for the releasing and engaging of the weighing hopper
discharging door in its closing and discharging operations. As regards the
complete closing or stopping of the feed, this is effected by means of a push or
tappet device mounted upon a part extended from the weigh beam; a trigger
mounted upon a hinge actuated thereby; and a lever or an extension of the levers,
arms, or the like, carrying the feed cut off device. The action is, that the trigger
allows the cut off device to fall, or be moved by a weight, to a given point upon the
second weight coming into action and removing the part or device holding it up in
the full feed position, but then, it holds it in a position to give the small final feed,
until the weighing is complete and the beams brought to the horizontal position;
in which movement the trigger is acted upon and pressed away by the tappet or
equivalent part on the beam, and releases said levers, arms, or the like connected
with the feed device, which upon such release, by its own weight, or by a
supplementary weight, as referred to, completes the movement of the device and
shuts off the feed or supply entirely. In this action, furthermore, the catch or
lock (which may be of any suitable kind) used in connection with the discharge door,
is acted upon and releases this door, its actuation being effected by a lever acted
upon by the aforesaid feed cut off device, levers, arms, or the like, in the last closing
action, the motion thereby imparted to it being communicated by a suitable rod to
the discharge door catch, which is withdrawn, and the door opens, allowing the
grain to pass out of the weighing hopper into the suitable receptacle below. After
the contents are discharged, the discharge door is closed by a counter-balance weight
and is caught and held by its catch or hook, and, at the same time, in the act of
being caught, acts through a projection or equivalent means, upon the trigger which
will be engaged with and holding up the third weight above referred to, thereby
allowing the said weight to fall and re-open the feed cut-off device as above
described.
In one form, the feed supply and cut off device may consist of a plate, with a
suitable weight thereon, disposed and working in front of the spout supplying the
hopper, and carried by levers mounted on a support at the opposite side of the spout,
and having extensions on the other side of the fulcrum of the levers which are
engaged by the triggers before described for allowing the device to cut off the final

page_text: feed. The lever, also, for actuating the discharge door catch, may be mounted upon
the said fulcrum, and be acted upon by a pin, projection, or part, on, or of, the feed
device levers or arms, the connection of such lever with the catch being by a rod.
Dated this 22nd day of March 1895.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15 Water Street, Liverpool, Applicant's Patent Agents.
Improvements in Automatic Weighing Machines.
I, HENRY POOLEY, Junior, of Albion Foundry, Liverpool, in the County of
Lancaster, Engineer, 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:-
The class of weighing machines to which this invention has reference, is that in
which granular, or pulverulent, or similar material is supplied from a constant
source of feed into a receptacle--generally called a weighing hopper-in a stream,
the hopper being carried by a weigh beam; and in which, when the full weight
which is desired to be weighed is approached, by the action of the machine itself,
the rate of feed to the hopper is automatically reduced, and then, finally, when the
complete weight is reached, the residual feed is entirely cut off or stopped, and the
weighed contents of the hopper are discharged, the initial or starting positions of
the parts being automatically resumed immediately after such discharge. That is
to say, the machine is of that class, which from a constant source of fe d of granular
or pulverulent material will, entirely automatically, weigh and discharge inter-
mittently and regularly, charges of the material of a given weight.
The chief object of the present invention is to provide a machine of this kind,
or improvements in connection with machinery of this kind, by which, in the first
place, certainty of action, or correct action, shall be secured, that is to say, a
machine wherein the automaticity of the parts can be safely relied on; secondly,
to provide means by which in the case of anything of an abnormal form or condition
finding its way into or arising in the supply, or in the vessel or receiver into which
the machine discharges, or otherwise, the action of the machine will cease, and
the supply of material to it withheld; thirdly, to provide simplicity of parts so
that the attention required to the machine after being set in action is practically nil. ;
and fourthly, simplicity and cheapness of construction.
:-
According to this invention, a machine comprises the usual parts common to
this class of machine, namely Weigh-beams, supporting at one-the front-end
the weighing hopper, and ai the other, the main weights, both of which are
suspended and supported upon knife edges, the beams themselves being supported
upon a frame at either side; a feed hopper or spout supported from said frames,
the spout having a feed cut off valve or device working in connection with it; and
a door at the bottom of the weighing hopper which is opened and afterwards closed,
in the discharging and filling actions, respectively.
According to this invention, as regards the means connected with the operations
of the weighing hopper discharging door, and of its action upon and in relation
with the feed cut off device, these are as follows:-Io connection with the main
weight supporting rod or parts of the machine, is a weighted lever, the weight of
which is controlled by that of the main-weight, that is, when the main weights
rise, this second weight can exert its force and come into action, whilst when the
main weights fall, this weight is raised and held out of action. A third weight is
used in connection with the second weight, it being less than the said second weight,
and is acted upon and moved by the second weight, and in connection with this
weight, or a lever or device carrying it, the feed cut off device is connected, and

page_text: there is used in connection with it, a trigger, which is acted upon by the hopper
discharging door. The action of these parts is, that, when the third weight is
free, it holds up and opens the feed cut off device, and then, when the weighing
hopper is filling, and the weigh-beams moved, the action of the main weights is
removed from the second weight lever which presses or moves the third weight,
thereby allowing the feed device to partially close the feed by its own weight, or a
weight adapted to come into action and close it, and at the same time causing the
engagement of the said weight or its lever with the said trigger which is operated
upon by the discharge door. Then, afterwards, when the weighing hopper is
returned and the main weights fall, the second weight is moved from out of action
upon, and prevented from acting upon, the third weight, and just as the discharge
door actually closes and is engaged by its catch or lock, the said third weight is
released by the trigger holding it being knocked out of action by the closing of
the door, as just specified; thereupon the said weight lifts the feed device, and
opens it, or allows it to open, fully.
In one and a convenient arrangement according to this invention, these parts
are arranged with the second weight on a lever supported by the frame, and its
back end acted upon by the rods or parts carrying the main-weights, this lever
acting upon and in conjunction with an upright or inclined rod or crutch extending
between levers or arms at the upper part of the machine carrying the feed cut-off
or regulating device, and a lever below carrying the third weight. Thus, when
this third weight, carried by its lever, is lifted by the second, the crutch or rod
leave the feed device levers or arms and allow it to fall, and vice versa. The third
weight, and the trigger acted by the discharge door are all mounted upon the
frame of the machine.
The parts and actions so far described deal only with the first part of the
cutting off action of the feed, and the subsequent full supply, and there remains
therefore the further mode of and mechanism for effecting the complete cutting
off of the feed, and that or those for the releasing and engaging of the weighing
hopper discharging door in its closing and discharging operations. As regards the
complete closing or stopping of the feed, this is effected by means of a push or
tappet device mounted upon a part extended from the weigh beam; a trigger
mounted upon a hinge actuated thereby; and a lever or an extension of the levers,
arms, or the like, carrying the feed cut off device. The action is, that the trigger
allows the cut off device to fall, or be moved by a weight, to a given point upou
the second weight coming into action and removing the part or device holding
it up in the full feed position; then, it holds it in a position to give the small
final feed, until the weighing is complete and the beams brought to the horizontal
position; in which movement the trigger is acted upon and pressed away by the
tappet or equivalent part on the beam, and releases said levers, arms, or the like
connected with the feed device, which upon such release, by its own weight, or by
a supplementary weight, as referred to, completes the movement of the device and
shuts off the feed or supply entirely. In this action, furthermore, the catch or
lock (which may be of any suitable kind) used in connection with the discharge
door, is acted upon and releases this door, its actuation being effected by a lever
acted upon by the aforesaid feed cut off device, levers, arms, or the like, in the
last closing action, the motion thereby imparted to it being communicated by a
suitable rod to the discharge door catch, which is withdrawn, and the door opens,
allowing the grain to pass out of the weighing hopper into a suitable receptacle
below. After the contents are discharged, the discharge door is closed by a
counter-balance weight and is caught and held by its catch or hook, and, at the
same time, in the act of being caught, acts through a projection or equivalent
means, upon the trigger which will be engaged with and holding up the third
weight above referred to, thereby allowing the said weight to fall and re-open the
feed cut-off device as above described.
In one form, the feed supply and cut off device may consist of a plate, with a
suitable weight thereon, disposed and working in front of the spout supplying the

page_text: hopper, and carried by levers mounted on a support at the opposite side of the
spout, and having extensions on the other side of the fulcrum of the levers which
are engaged to cut off the final feed. The lever, also, for actuating the discharge
door catch, may be mounted upon the said fulcrum, and be acted upon by
projection, or part, on, or of, the feed device levers or arms, the connection of
such lever with the catch being by a rod.
pin,
The invention is illustrated in the accompanying drawings, in which, Figure 1
is a side elevation, and Figure an end view.
Figures 3 and 4 are elevation and plan of details of the upper operative
paris of the machine.
Figures 5 and 6 are side elevation and front view of a modification of the
lower parts of the machine.
Referring to the drawings, a are the weigh-beams carrying at the front ends
by the bars a', the weighing hopper or receptacle b, and at the other, by a
suspension bar a², the main weight c, the beams a being supported at either side
upon the frame d by knife edges in the usual way. e is the feed hopper or
spout supported from the side frames d, to which the material being weighed is
fed or conducted; this hopper being extended, if desired, to any suitable size.
On the spout e¹ of this hopper, a feed cut off valve f is provided, the said valve
being carried by arms f¹ supported and adapted to oscillate upon a shaft f2 carried
by the frame d. g is the discharge door at the bottom of the receptacle b, said
door being mounted and working on a hinge pin g¹ carried by the receptacle b,
and the closing action of which is automatically effected by a counterbalance
weight g², connected with said door by the arms g³.
The means connected with the operation of the weighing receptacle b and the
discharge door g, and the action thereof upon and in relation with the feed cut off
valve f, are as follows:-Connected with the weight rod a² is a weighted lever h
of which is the weight, and the fulcrum, the connection of with a² being
by a pin a on a², on the under side of which the end 3 of the lever h normally
bears. The weight being less than c, it is always controlled by such weight c;
that is, when the weight c rises, the weight ¹ can exert its force and come into
action, whilst when c falls, ¹ is raised by the pin a3 and is held out of action.
Another weighted lever i is used in connection with the weight h', of which is
the weight, and the fulcrum. This weight is less than the weight h, and it is
acted upon and moved by it. With this weighted lever i, the feed cut off valve f
is connected, the connection being the vertical rod 3, the upper end of which
bears on the under side of the pin f³ of the arm f¹; and on one end of it also
there is a trigger * which is acted upon and works in connection with the receptacle
door g.
The action of these parts is, that when the weight is freed, it holds up by
means of the rod the valve f, and so opens the feeding spout e', and then, when
the weighing receptacle 6 is nearly full, and the weigh-beams a move and raise
the weight c, the action and weight of the main weight is removed from the second
weight lever by the pin a³ leaving such lever, whereupon the weight h' exerts
its force, and its lever à being passed through a slot in the rod 3, it comes as it
descends on to the bottom of the slot, and therefore presses the rod i³ downwards,
and so acts upon the third weight lever and weight it, and being greater than ",
lifts it, and so removes the support from the cut off valve arms f¹, and so the
valve is allowed to and does fall and partially cut off the feed by closing the
spout el to the receptacle 6 (or this action may release a weight which is adapted
to come into action and move and close the valve f); and in this same action,
by the downward movement of the rod 3, the catch is brought into action and
engagement with the trigger of the lever j, and so held in this downward
position, the lever being pressed back about its hinge j' (mounted on the frame d)
by in the descent thereof. The lever j is acted upon as hereafter described by
the door g.
Then afterwards, when the weighing receptacle b rises in its return action, and

page_text: the main weight e falls, the second weight ¹ is raised by the pin a³ acting upon
the lever h, so moving it out of action upon the weight i', and thereby freeing the
lever i and weight, and permitting its action to take place when the trigger is
removed from the point i, which is done by the closing action of the door y. The
result of which release is that the weight lifts the rod 3 and the cut off valve
through its arms f¹ and pin fƒ³.
The parts and actions above described concern only the first part of the cutting
off action of the valve f, and the subsequent full supply. The further mode of and
means for effecting the complete cut off of the feed, and those for the release and
engagement of the door g in its closing and discharging operation, will now be
described.
The complete stopping of the feed by the valve f is effected by a tappet k
mounted upon the arm or bracket k² fixed upon the upper side of one of the beams a
a trigger ; and an arm 1x adapted to be engaged by said trigger, and connected
with and operated simultaneously with the arm f' and valve. The parts are so
arranged and their action is, that the trigger allows the arms f' and valve fto
fall to a given point when the second weight comes into action, and depresses
the rod and raises the weight 2, but holds the valve f as soon as the arm fix
comes into contact with the detaining portion of the trigger 1; this action
however does not take place until the bulk of a charge or quantity of material has
been fed into the receptacle b, and the beam a moved to such au extent as to have
removed the pin a³ from the lever h, so allowing the weight to come into action.
The trigger holds the valve in this position to give the small final feed until the
weighing is complete, and the beams a brought to the horizontal position. In this
coming to the horizontal position, the tappet k comes into contact with the upper end
of the trigger 1, and presses it back and withdraws the detent portion from the
arm fx connected with the valve f, whereupon the valve.f falls, and closes entirely
the spout e', and so shuts off the feed completely. This action also effects the
release of the door g, and that door opens instantly upon the closing of the spout e
by the valve. The means or devices connected with this release, and also the
locking of the door g and their modes of operation are as follows:-Mounted on
the shaft (which carries also the parts above described connected with the cut
off valve f) there is a loosely mounted arm m, which at its end supports a vertical
rod n, and this rod operates upon, at its lower end, a trigger lever o, having a
trigger o, and fulcrummed at oon the receptacle b. Then, in connection with this
trigger o', there is a bell crank lever p fixed on a shaft q carried by the receptacle b,
the upper end of which lever operates in connection with the trigger o'; whilst at
the end of the other member there is a pin which works in connection with the
lever j above referred to, which is used for controlling the action of the valve f.
On the shaft there are also fixed arms r, the lower ends of which serve as a lock
and catch, to hold the door g closed during the filling action of the receptacle b, and
release it on becoming charged with the full weight of material being weighed.
The action of these parts is, that upon the release of the arm fix by the trigger 1
as above described, the arm m is depressed by the weight of the valve f and its
arms coming on the bent round end thereof, and so lifts the rod n, and the end
of o being disposed within the slot in the end of n, this lever o is raised when the
metal at the end of such slot comes in contact with the underside of the end of the
lever o, and lifts it, by which action, the trigger o¹ is removed from the upper end
of the bell crank lever p, thereby releasing it and effecting the freedom of the
shaft upon which it, and the arms r, are both fixed. Thereupon, by the weight
of the material resting on the bottom of the door g, the door g forces them back
and flies open, and the contents of the receptacle 6 discharge themselves into the
receptacle or space below. By this, of course, the weight on the receptacle b is
removed, and thereby the main weight c falls and raises the vessel b; and in so
doing lifts the weight h¹ and removes it from action upon the weighted lever i,
which however, having become engaged and held by the trigger 1 in the feed
cutting off action when the lever tip was pressed down by the weight h', cannot

page_text: 9:
yet be moved by its weight , and so the feed is still held off by the valve f. As.
soon as the receptacle 6 is empty, the door g will be closed by its counterbalance
weight 92, and in the closing action, the door, by a projection 9 on one of the side
lips thereof, strikes the underside of the lower member of the bell crank lever p,.
and thereby brings the arms r under the inclined end piece g* of the door and.
moves the upper member of p backward so as to engage with the trigger o¹ (in which
action it first lifts o up), aud at the same time removing the trigger 1 from the
lever catch or point, by the pin pl coming in contact with the underside of the
lever j. By this actuation of the trigger j', the lever i is released and the weight 2¹
falls, lifting thereby the rod 3, and so opening fully the feed valve f. This.
completes the cycle of operations of all the parts and the whole machine,
bringing back the parts to the position they take during the filling action of
the machine.
By the modes of action, and the constructions described, the operations and work
or effort required to be exerted in the operations of making, first, the first or partial
cut off action of the valve, and then the final and full movement thereof, and also
that of releasing the door, is extremely small, being merely the releasing of triggers,.
so that the amount of work which has to be performed by the weighing parts of
the machine to effect these purposes is correspondingly very small, and therefore
renders the machine capable of weighing goods with little or practically no error..
Practically, the work of effecting the actuation of these parts is wholly performed
by the main weight c when falling, upon the discharge of the contents of th
receptacle b, as in that fall it raises weights, namely the weight and so stores.
power or energy, which is subsequently used as described without interfering with
or acting on the weighing parts of the machinery in any way, or detracting from.
its delicacy as regards weighing qualities when the beam comes to a poise, at which
time, the weighing parts should, if delicacy and great accuracy of high weighing.
qualities are to be obtained, have no work to perform. Furthermore, by arranging
the weights or weighted parts by which the actions of the trigger mechanisms and
other moving parts are performed on the frame of the machine, that is, not on the
receptacle in which the material is weighed or parts connected with it, accurate and
continuously accurate weighing of material, is assured.
Further, by the door locking parts, and the different releasing mechanisms,.
namely, the triggers and their catches or detents, being made as described and
shown, and having a rubbing action one upon the other in their operations, the..
accumulation of dust on these parts is rendered practically impossible, and
therefore after the machine is set in action, the actions and operations and perfect..
automaticity of the machinery cannot be detrimentally affected by collections or
accumulations of dust on the different parts, as frequently happens in machinery of
this type now used.
Also in.
In the modification shewn in Figures 5 and 6, the lever o by which the door
g is.
alternately released and held, itself serves as a catch or lock to the door, its end or
trigger of being adapted to engage with the catch or detent gx of the door
and.
9:
disengage therefrom, without the intervention of other levers or trigger
mechanisms as set forth with reference to and shewn in Figures 1 and 2.
this case there is provided below the door g a platform t, inclined as shewn, and so
arranged in relation to the door and outlet for material, that the grain or material
strikes the platform and flows down it in a stream. The platform is supported from.
the weighing receptacle 6 by the side plates and bars t¹. The purpose of this...
platform is to keep a sufficient pressure or weight upon the door 9 during the
whole of the discharging operation, so that all liability of premature closing.
during this action is obviated, and by it, the flow of grain or material is such that
the required weight and resistance of this premature closing is afforded by governing
and diverting the direction of flow of the material from the machine. The lever j
(which locks and releases a weighted lever 1, as set forth with reference to
Figures 1 to 4) is actuated, i.e. pressed backwards, by the pin p', which, in this..

page_text: case, is fixed on the upwardly projecting side plates o³ of the door
contact with said lever j upon being closed and locked by the lever o.
and comes in
Although the invention as above set forth has been described as applied to
automatic weighing machines in which the weighing receptacle consists of a simple
hopper with a discharge door at the bottom, it is to be stated that the improvements
hereunder are not restricted to this type of weighing receptacle, as this may be
applied to machines in which the receptacles are of the tumbling or rotary type. In
such a case the receptacle would be held in the filling by a detent equivalent to o',
and the detent or trigger 1 or its equivalent would be actuated by a suitable
provision on the receptacle or part connected therewith, when the receptacle
resumes its complete normal and held filling or charging position.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
"set
1. A weighing machine having a weighing receptacle with main weights and
supports of the kind herein referred to, and a weight or weighted parts by which
the release or actuation of the feed.cut off and discharge is effected, arranged or
disposed upon the frame, i.e. free from the weighing receptacle, said weight or
weighted parts being raised or
in the return action of the weighing
machine by the greater main weight: substantially as and for the purposes set
forth.
2. The improvement herein described in weighing machines of the type herein
referred to, consisting of a weight on the frame connected with the feed cut off
mechanism and held out of action during the emptying of the receptacle, and
adapted at the completion of the discharge to be automatically released and to
open the feed mechanism or door: for the purposes specified.
3. In a weighing machine of the type herein referred to, a weight arranged and
supported by the frame, that is free of the weighing receptacle, and raised or set by
the return action or movement of the main weights and allowed to fall as the
main weights are raised in the weighing action, and adapted in such fall
to partially close the feed against the counteraction of a weight which normally
tends to hold the feed open: operating substantially as and for the purposes
described.
4. In a weighing machine of the kind herein referred to, a weight arranged on or
supported by the frame, i.e. free of the weighing receptacle, and raised by the
return action or movement of the main weight, and allowed to fall as the main
weights are raised in the weighing action, a second weight connected with the feed
supply and adapted to be raised by said weight when it is allowed to fall on the
raising of the main weight and cut off the supply or feed, and a detent mechanism
working in connection with the discharge door of the weighing receptacle, or with
such receptacle, by which said second weight is held up and the supply kept closed
during the discharge action and so long as the door is open, or the receptacle is not
completely ready to receive a fresh charge, and which is actuated by the door when
it is closed and locked, or by the receptacle when ready to receive such fresh charge,
and releases said weight, whereby the supply is then again opened; operating
substantially as and for the purposes set forth.
5. In a weighing machine of the type herein described having a feed cut off
valve working in connection with a feed spout e', a trigger mechanism by which
the final fall and cutting off action of the valve is effected by a tappet supported on
the weigh beams a and the elevation of which valve is effected by a weight whose
action is controlled and effected by another weight: substantially as and for the
purposes set forth.
6. In a
weighing machine of the type herein referred to, the employment in
connection with the discharge door of the weighing receptacle of a trigger
mechanism for releasing same, the action of which is effected through the fall

page_text: and closing of the cut off valve, or a weight, such valve or weight being
released by a trigger device operated by or from the weigh beams; arranged,
constructed and adapted to operate, substantially as set forth with reference to
the drawings.
7. In a weighing machine of the type herein referred to, the employment in con-
nection with the feed cut off valve of the weight, the action of which is controlled
by a larger weight h', and the trigger lever ; and door releasing mechanism
operating in connection with such lever, by which the action of the valve fis
controlled and partly effected; operating and arranged substantially as set forth
with reference to and shewn in the drawings.
8. A machine of the type herein described, having in combination a weight h
controlled by the main weight c, a weight i' for controlling and effecting the action
of the cut off valve f and controlled itself by the larger weight h¹, trigger mechanism
connected with the valvef for its final closing action, and door releasing trigger
mechanism also connected with said valve f, and a trigger lever j connected with
the weight lever i, and operating in connection with the door releasing mechanism;
all combined and co-acting in the manner set forth with reference to and as shewn
in the drawings.
9. The weighing machine having its parts arranged, combined, and adapted
set forth with reference to and as shewn in the
to operate particularly as
drawings.
Dated this 21st day of December 1895.
CHEESBROUGH & ROYSTON,
15 Water Street, Liverpool, Applicant's Patent Agents.