Improvements in Automatic Weighing Machines.
Year: 1887

page_text: Date of Application, 4th Mar., 1887
Complete Left, 3rd Dec., 1887
Complete Accepted, 6th Jan., 1888
PROVISIONAL SPECIFICATION.
Improvements in Automatic Weighing Machines.
I, JOSEPH ENTWISTLE of 163 Chorley Road, Swinton, Manchester, in the county
of Lancashire, Grocer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to a machine for automatically weighing loose grained
substances, such as rice, sago, tea, coffee, sugar, etc., by the use of which a given
weight of any loose grained substance may be automatically weighed as fast as the
receptacle receiving it can be removed from, and replaced in, or on, the machine,
thus effecting a considerable economy both in labour and time.
I construct my weighing machine as follows:-I take a convenient form of hopper
from the bottom of which runs a pipe or trough to conduct the substance to be
weighed to the weighing apparatus, the pipes being placed at such an angle as will
ensure the substance travelling automatically to its orifice. On the end of the pipe or
trough leading from the hopper I fit a sliding door which closes the mouth of the
pipe or trough, and is kept closed by a suitable spring. In convenient proximity
to this sliding door is a catch which holds the sliding door up when it is lifted, thus
opening the orifice of the pipe or trough. Immediately above the end of the pipe or
trough is suspended a balance carrying two trays, one to carry the weights, and the
other to carry the substance to be weighed; the tray carrying the latter is immediately
under the end of the pipe or trough leading from the hopper. Connected with this
tray or with the end of the arm of the balance that carries it, is an arm or lever
which as the tray descends when the given quantity of the substance being weighed
is delivered, engages with the catch which holds up the sliding door, and releases it,
thus allowing the sliding door to close, and so stop the orifice of the supply pipe or
trough. After the substance is removed from the tray, the sliding door is again
raised, and the apparatus again—and so on continuously-weighs out any given
quantity of the substance.
In any convenient part of the trough or delivery pipe, I provide a suitable damper
to regulate the supply of the substance being weighed.
Instead of using a suspended balance I may use an ordinary self contained pair
of scales or other convenient form of weighing machine.

page_text: When I use a suspended balance weighing machine, I sometimes connect the
sliding door direct with the arm of the balance carrying the tray to receive the
substance to be weighed, so that the door automatically closes as the tray of
the balance descends, and opens as it rises again.
It will be obvious that any number of weighing apparatii may be fed, or supplied,
from one hopper, so long as a separate delivery or feed, pipe or trough is provided
for each apparatus.
1 1007
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer & Patent Agent,
Royal Courts Chambers,
70, 71 & 72, Chancery Lane, London, W.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Automatic Weighing Machines.
I, JOSEPH ENTWISTLE of 163 Chorley Road, Swinton, Manchester in the county of
Lancashire, Grocer, do hereby declare the nature of this invention and in what
manner the saine is to be performed to be particularly described and ascertained in
and by the following statement :-
My invention relates to a machine for automatically weighing loose grained
substances such as rice, sago, tea, coffee, sugar etc., by the use of which a given
weight of any loose grained substance may be automatically weighed as fast as the
receptacle receiving it can be removed from, and replaced in, or on, the machine,
thus effecting a considerable economy both of labour and time.
I construct my improved automatic weighing machine as illustrated in the accom-
panying drawings in which Figure 1 Sheet No. 1 is a sectional elevation of the
machine and Figure 2 Sheet No. 2 a front elevation thereof.
Throughout the views similar parts are marked with like letters of reference.
In a suitable frame or stand A I form a hopper B from the bottom of which runs
one or more pipes or troughs C to conduct the substance to be weighed to the
weighing apparatus, each pipe or trough being placed at such an angle as will ensure
the substance travelling automatically to its orifice. On the end of each pipe or
trough C leading from the hopper B 1 fit a sliding door D which closes the mouth of
the pipe or trough, and is kept closed by suitable springs d, d. In convenient
proximity to the sliding door D is a catch lever E the catch end of which engages

page_text: with a projection d' on the sliding door D and so holds it up when it is lifted, thus
keeping the orifice of the pipe or trough open. The catch lever E is pivotted on a
support adjustably attached to the end of the pipe or trough C so that the sliding
door D may be retained open to any suitable degree. Immediately above the end of
each of the pipes or troughs is suspended a balance F carrying two trays and f,
the former to carry the weight or weights, and the latter to carry the substance to bo
weighed, this latter tray is mounted immediately under the end of the pipe or
trough C leading from the hopper B. Connected with this tray or with the end
of the arm of the balance that carries it as illustrated in the accompanying
drawings is an arm G provided with an adjustable finger or lever g or its
equivalent which, as the tray descends when the given quantity of the substance
being weighed is delivered, engages with the catch E which holds up the sliding
door D and so releases it, thus allowing the sliding door D to close by the action
of the springs d, d and so stop the orifice of the supply pipo or trough. To
enable the position of the tray to be adjusted to any desired position with
respect to the orifice of the supply or feed pipe or trough, the arm or arins of
the balance supporting the tray are made telescopic and the frame A¹ to
receive the tray as it descends is also made adjustable on the frame A. After
the substance is removed from the tray, the sliding door is again raised, and the
apparatus again-and so on continuously-weighs out any given quantity of the
substance.
In any convenient part of each of the delivery pipes or troughs I provide one
or more suitably adjustable sliding doors or dampors H, H to regulate the supply
of the substance being weighed, and on or in connection with each end thereof
I form or fix a spout C to guide the substance being weighed from the delivery
pipe or trough C to the bag or other receptacle for the substance, if one is used.
Instead of using a suspended balance I may use an ordinary self-contained
pair of scales or other convenient form of weighing machine.
When I use a suspended balance weighing machine as illustrated in the accom-
panying drawings I sometimes connect the sliding door D direct with the arm G
of the balance carrying the tray to receive the substance to be weighed, so that
the door automatically closes as the tray of the balance descends, and opens as
it rises again.
It will be obvious that any number of weighing apparatii may be arranged
round, and fed by or from, one hopper, so long as a separate delivery or feed
pipe or trough is provided for each apparatus.
'
I sometimes find it advantageous in weighing certain articles to use a sieve
and stirrer in the hopper, either in combination or separately, but as these devices
present no novel features I lay no claim to them, but having now particularly
described and ascertained the nature of my said Invention and in what manner the
same is to be performed, I declare that what I claim is :-
1. An automatic weighing machine constructed and operating specifically as
hereinbefore described and shown.
2. In an automatic weighing machine, the combination with one hopper of one
or more delivery pipes or troughs each fitted with a sliding door at its orifice
controlled by suitable springs, and arranged to be kept open by a suitable catch
releasable by the movement of a balance or other weighing machine, as set forth.
3. In an automatic weighing machine, the combination with a hopper fitted
with one or more feed or delivery pipes or troughs, of the sliding door con-
trolling the orifice of the said delivery pipe or trough, of springs acting on the
sliding door to close the orifice of the said pipe or trough, of a catch to hold
and keep the said sliding door up to open the orifice of the delivery pipe or trough,
of a balance or pair of scales one pan or tray of which is arranged immediately under
the orifice of the delivery pipe or trough, and of an adjustable arm or its equivalent
mounted on or connected to one arm of the said balance or pair of scales and arranged
to engage with the catch of the sliding door, all arranged and operating as set forth.

page_text: 4. In an automatic weighing machine, the combination with the balance or pair of
scales F, of the arm G fitted with an adjustable finger or lever g, the delivery pipe
or trough C, the sliding door D fitted with springs d, d to keep it closed, and the
catch Epivotted to an adjustable support e, as set forth.
5. In an automatic weighing machine the combination with the balance or pair of
scales F, of the hopper B forming part of a suitable supporting frame A, the delivery
or feed pipe or trough C, the sliding door D fitted with springs d, d to keep it
closed, the catch lever pivotted to an adjustable support e, the arm G provided with
an adjustable finger or lever g arranged to engage with the end of the catch lever E,
and the regulating doors or dampers H H, as set forth.
6. An automatic weighing machine consisting essentially of the hopper B, one or
more feed or supply pipes or troughs C, C etc., and spouts (arranged in a suitable
frame A, one or more sliding doors D controlling the orifices of the feed or delivery
pipes or troughs C, C etc., one or more catches E for holding the said sliding doors up
to keep the orifices of the said pipes or troughs open, one or more adjustable
supports e carrying the said catches, one or more balances or scales F, each carrying
arms G having adjustable fingers or levers g to engage with the catches E, the
regulating doors or dampers H, I, and one or more adjustable supporting frames A¹
all combined, arranged, and operating, as and for the purpose hereinbefore set
forth.
D
1
1 1
1
1
1000
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers,
70, Chancery Lane, London, W.C.,
Agent for the Applicant.