IMPROVEMENTS IN AUTOMATIC WEIGHING MACHINES to be as follows:-
Year: 1886

page_text: I CLEMENT COLERIDGE CLAWSON of Newark in the County of Essex and State
of New Jersey in the United States of America Manufacturer do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN AUTOMATIC WEIGHING
MACHINES to be as follows:-
"
My invention relates to automatic weighing machines of the kind described in
the specification of Letters Patent N° 14970 dated the 13th day of November
A.D. 1884 and granted to William Thomas Whiteman and my said Invention
consists of the improvements hereinafter described certain of which improvements
are principally applicable to machines of the construction described with reference
to and illustrated in Figures 1, 7 and 8 of the drawings accompanying the said
specification but are also capable of application to automatic weighing machines
of other construction.
The said improvements consist first of the mechanism hereinafter described for
holding down and releasing the scale pan and locking and releasing the supply gate
which controls the passage from the hopper of the matter to be weighed which
mechanism I substitute for the parts marked N. t in the aforesaid drawings the
object of this part of my Invention being to prevent the accidental opening of the
supply gate while a filled case or bag is being removed from the scale pan and to
render the opening of the supply gate at the proper times more certain. The said
mechanism consists of a lever mounted in suitable bearings carried by the frame
or some fixed part of the machine part of which lever lies in the path of motion of
a pin carried by the support of the supply gate and has a tooth formed on it which
engages with the said pin when the scale descends and thus keeps the supply gate
closed until the tooth is disengaged. The said lever is so arranged that one part
of it is in proximity to the delivery spout of the hopper and on an empty bag or
case being placed on the scale pan the supply gate is released by the contact of
such bag or case with the said lever.
The said improvements consist further of the arrangement hereinafter described
of the weight which balances the scale pan and the matter to be weighed which
arrangement I substitute for the notched bar and weight shown in the aforesaid
drawings and for the parts of the machine shown therein marked 5 and 6 the object
of this part of my said Invention being to simplify the construction and use of the
machine. According to the improved arrangement I use one weight only which

page_text: I mount on a pair of rods which project horizontally from the back of the scale
beam and I provide for the adjustment of the weight to the required distance from
the centres on which the beam turns by means of a screwed rod or spindle which
passes through and engages with a screwed hole in the said weight which screwed
rod or spindle passes through a bar connecting the free ends of the aforesaid pair
of rods and is free to rotate therein but is prevented from moving end wise by
means of a fixed collar. By simply turning the said screwed rod or spindle in one
or other direction the weight may be adjusted with the greatest nicety and when
adjusted cannot be accidentally displaced.
The said improvements consist farther of the arrangements hereinafter described
for ensuring regularity in the passage or discharge from the hopper of powdered
or granular matters and of tea and other like matters. According to this part of
my invention I form a chamber below the hopper and above the supply gate the
upper part of which chamber is of the form of a hollow cone and has inclined
openings formed in it and I mount a rotatory shaft vertically above the hopper the
lower part of which shaft carries a tube or socket having screw like vanes formed
on it which vanes work in proximity to the conical upper part of the aforesaid
chamber and have such a configuration that by the rotation of the said shaft the
matters in the hopper are forced by the said vanes through the said inclined
openings into the said chamber the rate of passage of the said matters into the
said chamber being dependent on the speed of the said rotatory shaft which speed
is so regulated according to the speed of action of the machine that the said
chamber may not at any time be completely filled. This arrangement I use in the
case of powdered or granular matters. In the case of tea and like matters
I dispense with the conical upper part of the chamber and the screw like vanes
hereinbefore referred to and in place of the latter I secure a spirally twisted rod to
the aforesaid vertical rotatory shaft which spirally twisted rod works partly within
and partly above the upper end of the said chamber.
000

page_text: I CLEMENT COLERIDGE CLAWSON of Newark in the County of Essex and State
of New Jersey in the United States of America Manufacturer 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:-
My invention relates to automatic weighing machines of the kind described in
the specification of Letters Patent N° 14970 dated the 13th day of November
A.D. 1884 and granted to William Thomas Whiteman and my said Invention
consists of the improvements hereinafter described certain of which improvements
are especially applicable to machines of the construction described with reference
to and illustrated in Figures 1, 7 and 8 of the drawings accompanying the said
specification but are also capable of application to automatic weighing machines
of other construction.
The said improvements consist first of the mechanism hereinafter described for
holding down and releasing the scale pan and locking and releasing the supply
gate which controls the passage from the hopper of the matter to be weighed which
mechanism I substitute for the parts marked N, t in the aforesaid drawings the
object of this part of my invention being to prevent the accidental opening of the
supply gate while a filled case or bag is being removed from the scale pan and to
render the opening of the supply gate at the proper times more certain. The said
mechanism consists of a lever mounted in suitable bearings carried by the frame
or some fixed part of the machine part of which lever lies in the path of motion of
a pin carried by the support of the supply gate and has a notch or tooth formed in
or on it which engages with the said pin when the scale descends and thus keeps
the supply gate closed until the tooth is disengaged. The said lever is so arranged
that one part of it is in proximity to the delivery spout of the hopper and on an
empty bag or case being placed on the scale pan the supply gate is released by the
contact of such bag or case with the said lever.
The said improvements consist further of the arrangement hereinafter described
of the weight which balances the scale pan and the matter to be weighed which
arrangement I substitute for the notched bar and weight shown in the aforesaid
drawings and for the parts of the machine shown therein marked 5 and the
object of this part of my said invention being to simplify the construction and
use of the machine. According to the improved arrangement I use one weight
only which I mount on a pair of rods which project horizontally from the back of
the scale beam and I provide for the adjustment of the weight to the required
distance from the centres on which the beam turns by means of a screwed rod or
spindle which passes through and engages with a screwed hole in the said weight
which screwed rod or spindle passes through a bar connecting the free or outer
ends of the aforesaid pair of rods and is free to rotate therein but is prevented
from moving endwise by means of a fixed collar. By simply turning the said
screwed rod or spindle in one or other direction the weight may be adjusted with
the greatest nicety and when adjusted cannot be accidentally displaced.
The said improvements consist further of the arrangements hereinafter described
for ensuring regularity in the passage or discharge from the hopper of powdered
or granular matters and of tea and other like matters. According to this part of

page_text: my invention I form or arrange a chamber below the hopper and above the supply
gate the upper part of which chamber is of the form of a hollow cone and has
inclined openings formed in it and I mount a rotatory shaft vertically above the
hopper the lower part of which shaft carries a stirrer consisting of a tube or
socket having screw like vanes or arms formed on it which vanes or arms work in
proximity to the conical upper part of the aforesaid chamber and have such a
configuration that by the rotation of the said shaft the matters in the hopper are
forced by the said vanes or arms through the said inclined openings into the said
chamber the rate of passage of the said matters into the said chamber being
dependent on the speed of the said rotatory shaft which speed is so regulated
according to the speed of action of the machine that the said chamber may not at
any time be completely filled. This arrangement I use in the case of powdered
or granular matters. In the case of tea and like matters the conical upper part
of the chamber and the stirrer herein before described having screw like vanes may
be dispensed with and in place of the said stirrer a spirally twisted rod may be
secured to the aforesaid vertical rotatory shaft so as to work partly within and
partly above the upper end of the said chamber.
Having thus described the nature of this invention I will proceed to describe
the manner in which it is to be or may be performed reference being had to the
accompanying Drawings and to the letters and figures marked thereon. The same
letters and figures of reference indicate the same parts in each of the Figures of the
said Drawings.
Figure 1 of the accompanying drawings is an elevation partly in section of an
automatic weighing machine constructed substantially as described in the aforesaid
specification and having the improvements herein before described applied thereto.
A is the hopper which is supported by a standard B secured to a base C D is the
scale pan or plate E is the scale beam F is the rod or arm carried thereby on the
upper end of which is the supply gate G and H is the delivery spout. The parts
of the mechanism bereinbefore referred to being in all essential respects similar in
construction arrangement and action to corresponding parts described with reference
to and illustrated in Figures 1. 7 and 8 of the drawings accompanying the aforesaid
specification need no further description.
The mechanism for locking and releasing the supply gate G is hereinafter
described. I is the lever by which the said supply gate is locked is the tooth
formed thereon and f¹ is the pin carried by the rod or arm F with which pin the
said tooth engages when the supply gate is closed by the tilting of the scale
beam. The said lever I is mounted and works on centres carried by a bracket i²
secured to the standard B and is so balanced that when in its normal position its
lower end bears against the rib b¹ of the standard B as shown in the Drawing the
part on which the tooth is formed being then in the path of motion of the said
pin f. The part of the said lever which is in proximity to the delivery spout H
is marked 3. The action of this arrangement is as follows. When the scale
descends and the supply gate advances to close the delivery spout the pin fl on the
rod F lifts the upper arm of the lever I and when the supply gate has advanced
far enough to fully close the delivery spout the said pin fi has passed under the
notch in the said lever I which then falls the said notch engaging with the said
pin and preventing the accidental opening of the said supply gate. When an
empty bag or case is being placed on the scale pan the upper edge of the said bag
or case comes in contact with the part 3 of the said lever and raises it thus
disengaging the notch from the pin f' and liberating the rod or arm F and the
scale beam and parts carried by it which consequently return to the positions
shown in the drawing. The delivery spout being then unobstructed the matters
contained in the hopper descend into the empty bag or case which has been placed
on the scale pan and continue to descend and pass into the bag until the scale
descends and the supply gate is again closed and locked as herein before described.
The arrangement of the weight which balances the scale pan and the matter
to be weighed is hereinafter described with reference to the said Figure 1 and to

page_text: Figure 2 of the accompanying drawings which latter Figure is a plan of the scale
beam and parts formed thereon or secured thereto shown separately from the other
parts of the machine the rod or arm F being in section J is the said weight KK
are the rods on which it is mounted which rods are secured at one end to the
scale beam and form a prolongation thereof. L is the screwed rod which passes
through and engages with a screwed hole in the said weight and is the bar
which connects the outer ends of the rods K K through and in a hole in which bar
the screwed rod L is passed and rotates is the collar secured to the said rod by,
which it is prevented from moving endwise in the said bar 12 is a milled head on
the end of the screwed rod L which projects beyond the bar by means of which
milled head the said rod L is turned in one or other direction in order to adjust
the position of the weight J which is moved either towards or from the centre of
the scale beam according as the scale is required to turn with a lighter or heavier
weight. The upward motion of the scale pan is limited by the contact of a
projection ² formed on the underside of the bar k¹ with the upper end of a rod M
secured to the base C of the machine.
i
The arrangement for ensuring regularity in the passage or discharge from the
hopper of powdered or granular matters is hereinafter described with reference to
the said Figure 1 and to Figures 3. 4. 5. 6. 7. 8. 9 and 10 of the accompanying
drawings which represent portions of the said arrangement drawn to a larger scale
than that of Figure 1.
N is the chamber formed below the hopper and above the delivery spout. The
said chamber consists of a tube having a flange n' formed at its lower end by
which it is secured to the upper part of the arm be of the standard and having
a conical flange n² formed at its upper end to which the hopper A is secured O is
the conical upper part of the chamber N and o¹, o¹ are the inclined openings
therein. The form of the part O is clearly shown in the said Figures 3. 4. 5 and 6
Figure 3 being a central vertical section of the chamber N and of the conical
upper part thereof and of a portion of the hopper A Figures 4 and 5 respectively
a plan and an elevation of the said part O shown separately and Figure 6 a section
thereof taken on the line X Figure 5.
P is the rotatory shaft mounted above the hopper A in bearings Q. R is the
body of the stirrer which is secured to the lower part of the said shaft and µª¹µª²
are the screw like vanes or arms which work in the hopper A in proximity to the
part of the chamber N. The form of the stirrer is clearly shown in Figures 7.
8. 9 and 10 of the accompanying drawings which are separate views thereof.
Figure 7 being a plan Figures 8 and 9 elevations taken at right angles to each
other and Figure 10 a section taken on the line Z Figure 7. A recess r² is formed
in the axis of the lower part of the body of the stirrer which recess fits over a
cylindrical boss o² formed on the conical top O of the chamber N on which boss
the said stirrer bears the vanes or arms 71, 71 of the said stirrer being thus kept
out of contact with the hopper A and top O of the chamber N. By the rotation
of the shaft P the screw 'like vanes or arms r¹, r¹ are caused to stir the matters in
the hopper and force them downward therein and discharge them through the
inclined openings o', o' into the chamber N.
In using the machine the matters to be weighed are supplied to the hopper A at
such a rate that the said hopper is kept constantly charged without overflowing
and the speed of rotation of the shaft P is so regulated according to the speed of
action of the machine that the chamber N may be kept partly charged and only
partly charged with the matter passing from the hopper.
The arrangement hereinbefore described which may be used in place of the
stirrer having vanes or arms when the machine is required to be used for weighing
tea and like matters is illustrated in Figure 11 of the accompanying drawings
which Figure represents a vertical section of the hopper A and chamber N and the
lower part of the shaft P S being the spirally twisted rod which I use for assisting
the descent of such matters from the hopper into the said chamber. When the

page_text: machine is in action the shaft P to which the said twisted rod S is secured is
caused to rotate as in the arrangement hereinbefore described.
The arrangement herein before described for locking the supply gate is especially
applicable to machines of the kind described with reference to and illustrated in
Figures 1, 7 and 8 of the drawings accompanying the aforesaid specification.
The arrangement of the weight and the arrangements for stirring the matters in
the hopper and for discharging them therefrom are capable of application to the
said machines and are also applicable to automatic weighing machines of the other
constructions described in the aforesaid specification and to other automatic
weighing machines.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be or may be performed I wish it
to be understood that I do not limit myself to the precise details hereinbefore
described and illustrated in the accompanying Drawings as the same may be
varied without departing from the nature of my invention but I declare that
I claim as my said invention
First. The arrangement herein before described and illustrated in Figure 1 of
the accompanying drawings for locking the mechanism by which the passage from
the delivery spout of the matters to be weighed is interrupted on the descent of the
scale pan the said arrangement consisting essentially of a lever which engages
with the rod carrying the supply gate when the said gate is in position to close
the delivery spout the said lever being so arranged as to be actuated in order to
release the supply gate by contact with an empty bag or receptacle while it is
being placed on the scale pan.
Secondly. The arrangement herein before described and illustrated in Figures 1
and 2 of the accompanying drawings of the weight by which the scale pan and
the matter to be weighed are balanced the said arrangement consisting of guides
secured to or forming part of the scale beam and carrying a screw with which
guides and screw the said weight is so connected as to be capable of being adjusted
to balance the required weight on the scale pan the adjustment of the said weight
as required being effected by turning the said screw in one or other direction.
Thirdly. The arrangement herein before described and illustrated in the accom-
panying drawings for ensuring regularity in the passage from the delivery spout
of powdered or granular matters the said arrangement consisting essentially of a
chamber formed between the hopper and the delivery spout and having a conical
top in which openings are formed and of a rotatory stirrer working in the hopper
and above and around the conical top of the said chamber the said stirrer being so
formed as to force the matters contained in the hopper to pass downward therein
and through the openings in the conical top of the said chamber.
W. T. WHITEMAN,
Agent for the Applicant.

page_text: This Specification was, upon the 19th day of August 1886, amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
I CLEMENT COLERIDGE CLAWSON of Newark in the County of Essex and State
of New Jersey in the United States of America Manufacturer do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN AUTOMATIC WEIGHING
MACHINES to be as follows:-
"
My invention relates to automatic weighing machines of the kind described in
the specification of Letters Patent No 14970 dated the 13th day of November
A.D. 1884 and granted to William Thomas Whiteman and my said Invention
consists of the improvements hereinafter described certain of which improvements
are principally applicable to machines of the construction described with reference
to and illustrated in Figures 1, 7 and 8 of the drawings accompanying the said
specification but are also capable of application to automatic weighing machines
of other construction.
The said improvements consist first of the mechanism hereinafter described for
holding down and releasing the scale pan and locking and releasing the supply gate
which controls the passage from the hopper of the matter to be weighed which
mechanism I substitute for the parts marked N. t in the aforesaid drawings the
object of this part of my Invention being to prevent the accidental opening of the
supply gate while a filled case or bag is being removed from the scale pan and to
render the opening of the supply gate at the proper times more certain. The said
mechanism consists of a lever mounted in suitable bearings carried by the frame
or some fixed part of the machine part of which lever lies in the path of motion of
a pin carried by the support of the supply gate and has a tooth formed on it which
engages with the said pin when the scale descends and thus keeps the supply gate
closed until the tooth is disengaged. The said lever is so arranged that one part
of it is in proximity to the delivery spout of the hopper and on an empty bag or
case being placed on the scale pan the supply gate is released by the contact of
such bag or case with the said lever.
The said improvements consist further of the arrangement hereinafter described
of the weight which balances the scale pan and the matter to be weighed which
arrangement I substitute for the notched bar and weight shown in the aforesaid
drawings and for the parts of the machine shown therein marked 5 and 6 the object
of this part of my said Invention being to simplify the construction and use of the
machine. According to the improved arrangement I use one weight only which

page_text: I mount on a pair of rods which project horizontally from the back of the scale
beam and I provide for the adjustment of the weight to the required distance from
the centres on which the beam turns by means of a screwed rod or spindle which
passes through and engages with a screwed hole in the said weight which screwed
rod or spindle passes through a bar connecting the free ends of the aforesaid pair
of rods and is free to rotate therein but is prevented from moving end wise by
means of a fixed collar. By simply turning the said screwed rod or spindle in one
or other direction the weight may be adjusted with the greatest nicety and when
adjusted cannot be accidentally displaced.
The said improvements consist further of the arrangements hereinafter described
for ensuring regularity in the passage or discharge from the hopper of powdered
or granular matters and of tea and other like matters. According to this part of
my invention I form a chamber below the hopper and above the supply gate the
upper part of which chamber is of the form of a hollow cone and has inclined
openings formed in it and I mount a rotatory shaft vertically above the hopper the
lower part of which shaft carries a tube or socket having screw like vanes formed
on it which vanes work in proximity to the conical upper part of the aforesaid
chamber and have such a configuration that by the rotation of the said shaft the
matters in the hopper are forced by the said vanes through the said inclined
openings into the said chamber the rate of passage of the said matters into the
said chamber being dependent on the speed of the said rotatory shaft which speed
is so regulated according to the speed of action of the machine that the said
chamber may not at any time be completely filled. This arrangement I use in the
case of powdered or granular matters. In the case of tea and like matters
I dispense with the conical upper part of the chamber and the screw like vanes
herein before referred to and in place of the latter I secure a spirally twisted rod to
the aforesaid vertical rotatory shaft which spirally twisted rod works partly within
and partly above the upper end of the said chamber.

page_text: I CLEMENT COLERIDGE CLAWSON of Newark in the County of Essex and State
of New Jersey in the United States of America Manufacturer 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:-
My invention relates to automatic weighing machines of the kind described in
the specification of Letters Patent No 14970 dated the 13th day of November
A.D. 1884 and granted to William Thomas Whiteman and my said Invention
consists of the improvements hereinafter described certain of which improvements
are especially applicable to machines of the construction described with reference
to and illustrated in Figures 1, 7 and 8 of the drawings accompanying the said
specification but are also capable of application to automatic weighing machines
of other construction.
The said improvements consist first of the mechanism hereinafter described for
holding down and releasing the scale pan and locking and releasing the supply
gate which controls the passage from the hopper of the matter to be weighed which
mechanism I substitute for the parts marked N, t in the aforesaid drawings the
object of this part of my invention being to prevent the accidental opening of the
supply gate while a filled case or bag is being removed from the scale pan and to
render the opening of the supply gate at the proper times more certain. The said
mechanism consists of a lever mounted in suitable bearings carried by the frame
or some fixed part of the machine part of which lever lies in the path of notion of
a pin carried by the support of the supply gate and bas a notch or tooth formed in
or on it which engages with the said pin when the scale descends and thus keeps
the supply gate closed until the tooth is disengaged. The said lever is so arranged
that one part of it is in proximity to the delivery spout of the hopper and on an
empty bag or case being placed on the scale pan the supply gate is released by the
contact of such bag or case with the said lever.
The-said-improvements consist further-of-the-arrangement-bereinafter-described
of the weight which balances the seale-pan-and-the-matter to-be-weighed-which
arrangement-I-substitute for the notched bar and weight shown in the aforesaid
drawings and for the parts of the machine shown therein marked 5 and 6 the
object of this part of my said invention being to simplify the construction-and
use of the machine. According to the an improved arrangement which I have
illustrated in connection with my other improvements, but to which I make no
claim, I use one weight only which I mount on a pair of rods which project
horizontally from the back of the scale beam and I provide for the adjustment of
the weight to the required distance from the centres on which the beam turns by
means of a screwed rod or spindle which passes through and engages with a
screwed hole in the said weight which screwed rod or spindle passes through a
bar connecting the free or outer ends of the aforesaid pair of rods and is free to
rotate therein but is prevented from moving end wise by means of a fixed collar.
By simply turning the said screwed rod or spindle in one or other direction the

page_text: weight may be adjusted with the greatest nicety and when adjusted cannot be
accidentally displaced.
The said improvements consist further of the arrangements hereinafter described
for ensuring regularity in the passage or discharge from the hopper of powdered
or granular matters and of tea and other like matters. According to this part of
my invention I form or arrange a chamber below the hopper and above the supply
gate the upper part of which chamber is of the form of a hollow cone and has
inclined openings formed in it and I mount a rotatory shaft vertically above the
hopper the lower part of which shaft carries a stirrer consisting of a tube or
socket having screw like vanes or arms formed on it which vanes or arms work in
proximity to the conical upper part of the aforesaid chamber and have such a
configuration that by the rotation of the said shaft the matters in the hopper are
forced by the said vanes or arms through the said inclined openings into the said
chamber the rate of passage of the said matters into the said chamber being
dependent on the speed of the said rotatory shaft which speed is so regulated
according to the speed of action of the machine that the said chamber may not at
any time be completely filled. This arrangement I use in the case of powdered
or granular matters. In the case of tea and like matters the conical upper part
of the chamber and the stirrer herein before described having screw like vanes may
be dispensed with and in place of the said stirrer a spirally twisted rod may be
secured to the aforesaid vertical rotatory shaft so as to work partly within and
partly above the upper end of the said chamber.
Having thus described the nature of this invention I will proceed to describe
the manner in which it is to be or may be performed reference being had to the
accompanying Drawings and to the letters and figures marked thereon. The same
letters and figures of reference indicate the same parts in each of the Figures of the
said Drawings.
Figure 1 of the accompanying drawings is an elevation partly in section of an
automatic weighing machine constructed substantially as described in the aforesaid
specification and having the improvements herein before described applied thereto.
A is the hopper which is supported by a standard B secured to a base C D is the
scale pan or plate E is the scale beam F is the rod or arm carried thereby on the
upper end of which is the supply gate G and H is the delivery spout. The parts
of the mechanism hereinbefore referred to being in all essential respects similar in
construction arrangement and action to corresponding parts described with reference
to and illustrated in Figures 1. 7 and 8 of the drawings accompanying the aforesaid
specification need no further description.
The mechanism for locking and releasing the supply gate C is hereinafter
described. I is the lever by which the said supply gate is locked is the tooth
formed thereon and f¹ is the pin carried by the rod or arm F with which pin the
said tooth engages when the supply gate is closed by the tilting of the scale
beam The said lever I is mounted and works on centres carried by a bracket ³
secured to the standard B and is so balanced that when in its normal position its
lower end bears against the rib b¹ of the standard B as shown in the Drawing the
part on which the tooth is formed being then in the path of motion of the said
pin. The part of the said lever which is in proximity to the delivery spout H
is marked The action of this arrangement is as follows. When the scale
descends and the supply gate advances to close the delivery spout the pin f¹ on the
rod F lifts the upper arm of the lever I and when the supply gate has advanced
far enough to fully close the delivery spout the said pin fi has passed under the
notch in the said lever I which then falls the said notch engaging with the said
pin and preventing the accidental opening of the said supply gate. When an
empty bag or case is being placed on the scale pan the upper edge of the said bag
or case comes in contact with the part of the said lever and raises it thus
disengaging the notch from the pin f1 and liberating the rod or arm F and the
scale beam and parts carried by it which consequently return to the positions
shown in the drawing. The delivery spout being then unobstructed the matters

page_text: contained in the hopper descend into the empty bag or case which has been placed
on the scale pan and continue to descend and pass into the bag until the scale
descends and the supply gate is again closed and locked as herein before described.
The arrangement of the weight which balances the scale pan and the matter
to be weighed is hereinafter described with reference to the said Figure 1 and to
Figure 2 of the accompanying drawings which latter Figure is a plan of the scale
beam and parts formed thereon or secured thereto shown separately, from the other
parts of the machine the rod or arm F being in section J is the said weight KK
are the rods on which it is mounted which rods are secured at one end to the
scale bean and form a prolongation thereof. L is the screwed rod which passes
through and engages with a screwed hole in the said weight and ¹ is the bar
which connects the outer ends of the rods K K through and in a hole in which bar
the screwed rod L is passed and rotates is the collar secured to the said rod by
which it is prevented from moving endwise in the said bar is a milled head on
the end of the screwed rod L which projects beyond the bar k¹ by means of which
milled head the said rod L is turned in one or other direction in order to adjust
the position of the weight J which is moved either towards or from the centre of
the scale beam according as the scale is required to turn with a lighter or heavier
weight. The upward motion of the scale pan is limited by the contact of a
projection forined on the underside of the bar k¹ with the upper end of a rod M
secured to the base C of the machine.
The arrangement for ensuring regularity in the passage or discharge from the
hopper of powdered or granular matters is heroinafter described with reference to
the said Figure 1 and to Figures 3. 4. 5. 6. 7. 8. 9 and 10 of the accompanying
drawings which represent portions of the said arrangement drawn to a larger scale
than that of Figure 1.
N is the chamber formed below the hopper and above the delivery spout. The
said chamber consists of a tube having a flange n¹ formed at its lower end by
which it is secured to the upper part of the arm 62 of the standard B and having
a conical flange n² formed at its upper end to which the hopper A is secured O is
the conical upper part of the chamber N and o', o' are the inclined openings
therein. The form of the part O is clearly shown in the said Figures 3. 4. 5 and 6
Figure 3 being a central vertical section of the chamber N and of the conical
upper part O thereof and of a portion of the hopper A Figures 4 and 5 respectively
a plan and an elevation of the said part O shown separately and Figure 6 a section
thereof taken on the line X Figure 5.
P is the rotatory shaft mounted above the hopper A in bearings Q. R is the
body of the stirrer which is secured to the lower part of the said shaft and l pol
are the screw like vanes or arms which work in the hopper A in proximity to the
part O of the chamber N. The form of the stirrer is clearly shown in Figures 7.
8. 9 and 10 of the accompanying drawings which are separate views thereof.
Figure 7 being a plan Figures 8 and 9 elevations taken at right angles to each
other and Figure 10 a section taken on the line Z Figure 7. A recess r² is formed
in the axis of the lower part of the body of the stirrer which recess fits over a
cylindrical boss o² formed on the conical top O of the chamber N on which boss
the said stirrer bears the vanes or arms r, 1 of the said stirrer being thus kept
out of contact with the hopper A and top O of the chamber N. By the rotation
of the shaft P the screw like vanes or arms 71, 71 are caused to stir the matters in
the hopper and force them downward therein and discharge them through the
inclined openings o¹, o' into the chamber N.
In using the machine the matters to be weighed are supplied to the hopper A. at
such a rate that the said hopper is kept constantly charged without overflowing
and the speed of rotation of the shaft P is so regulated according to the speed of
action of the machine that the chamber N may be kept partly charged and only
partly charged with the matter passing from the hopper.
The arrangement hereinbefore described which may be used in place of the
stirrer having vanes or arms when the machine is required to be used for weighing

page_text: tea and like matters is illustrated in Figure 11 of the accompanying drawings
which Figure represents a vertical section of the hopper A and chamber N and the
lower part of the shaft PS being the spirally twisted rod which I use for assisting
the descent of such matters from the hopper into the said chamber. When the
machine is in action the shaft P to which the said twisted rod S is secured is
caused to rotate as in the arrangement hereinbefore described.
The arrangement hereinbefore described for locking the supply gate is especially
applicable to machines of the kind described with reference to and illustrated in
Figures 1, 7 and 8 of the drawings accompanying the aforesaid specification.
The arrangement-of-the-weight-and-the arrangements for stirring the matters in
the hopper and for discharging them therefrom are capable of application to the
said machines and are also applicable to automatic weighing machines of the other
constructions described in the aforesaid specification and to other automatic
weighing machines.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be or may be performed I wish it
to be understood that I do not limit myself to the precise details hereinbefore
described and illustrated in the accompanying Drawings as the same may be
varied without departing from the nature of my invention but I declare that
I claim as my said invention
First. The arrangement hereinbefore described and illustrated in Figure 1 of
the accompanying drawings for locking the mechanism by which the passage from
the delivery spout of the matters to be weighed is interrupted on the descent of the
scale pan the said arrangement consisting essentially of a lever which engages
with the rod carrying the supply gate when the said gate is in position to close
the delivery spout the said lever being so arranged as to be actuated in order to
release the supply gate by contact with an empty bag or receptacle while it is
being placed on the scale pan.
Secondly. The-arrangement hereinbefore described and illustrated in Figures-+
and-2-of-the-accompanying drawings-of-the-weight by which the seale-pan-and
the matter to be-weighed are-balanced the said arrangement-consisting of guides
secured to or forming part of the seale beam and-carrying a serew-with-which
guides-and-serew the-said weight-is-so-connected-as-to-be-capable of being adjusted
to-balance-the-required-weight-on-the-seale-pan-the-adjustment-of-the-said-weight
as-required-being-effected-by-turning-the--said-screw-in-one-or-other-direction.
Thirdly. Second-The arrangement herein before described and illustrated in
the accompanying drawings for ensuring regularity in the passage from the
delivery spout of powdered or granular matters the said arrangement consisting
essentially of a chamber formed between the hopper and the delivery spout and
having a conical top in which openings are formed and of a rotatory stirrer
working in the hopper and above and around the conical top of the said chamber
the said stirrer being so formed as to force the matters contained in the hopper to
pass downward therein and through the openings in the conical top of the said
chamber.
W. T. WHITEMAN,
Agent for the Applicant.