IMPROVEMENTS IN WEIGHING APPARATUS
Year: 1885

page_text: I, ALFRED GEORGE BROOKES of the firm of Wm Brookes & Son of 55 & 56
Chancery Lane in the County of Middlesex Fellow of the Institute of Patent
Agents, do hereby declare the nature of my invention for IMPROVEMENTS IN
WEIGHING APPARATUS to be as follows:-
The invention relates to improvements in weighing apparatus, which, after
having been filled with a certain charge, stops automatically the further supply of
the material to be weighed and allows further supply only after the first charge
has been unloaded; and the objects of the present improvements are first to open
and close automatically the supply channels; second to provide means for con-
trolling the weighing mechanism; third to facilitate the turning of the weighing
receptacle for discharging; and fourth to retain the raising and descending motion
of the scale-beam.
Beneath the outlet of the supply funnel are two flaps, of which the upper one is
provided with a number of slits, which are closed entirely only by the lower flap.
When the apparatus is ready for use, the upper flap is kept open by a projection
of the weighing receptacle; this projection rests against a counter weight of the
lever supporting the upper flap, while the lower flap is arrested by the ratchet
pawl of a bell crank engaging into a projection of the arm which supports the
lower flap.
The toothed pivots of the weighing receptacle rest in toothed bearings suspended
in edges at one end of the scale-beam. At the other end of the scale-beam, the
inclination of which is indicated by a tongue or pointer, the weight-scale is
suspended.
The material to be weighed, which runs from the supply funnel into the recep-
tacle causes the latter to descend when a quantity filling the receptacle nearly
balances the weight in the scale; thereby the counter weight arresting the upper
flap gets free from the projection of the receptacle; and thus the upper flap is
closed. Now the material to be weighed can run into the receptacle only gradually
in small or fine streams through the slits of the flap.
877

page_text: A second scale-beam, which is placed above the first one, bears instead of a
tongue or needle a weight; one end of this beam is provided with an adjusting
weight, while the other end engages by means of a projection into a slit of a slide-
piece resting by means of a second slit upon the receptacle bearings. As long as
the receptacle does not descend too far, the slide-piece does not charge the second
beam; but as soon as the receptacle has travelled down far enough, the slide piece
charges, when descending further, that arm of the second beam, wherewith it is
fairly coupled and pulls it down. Thereby the weight of the second beam swings
over and therewith the beam, which pushes at the one arm of the crank-lever thus
disengaging the pawl from the lower flap, which now entirely closes the outlet of
the funnel.
The material receptacle, the toothed pivots of which are arranged in such a
manner as to lay below the centre of gravity of the receptacle when filled, is kept
in upright position by a hook, which is jointed to one of the supports of the recep-
tacle and engages into a projection of the receptacle and engages. But as soon as
the receptacle descends so far, that the hook or a projection fixed thereon touches
a suspended hook and thus disengages from the projection, the receptacle tilts over
and thereby is emptied, whereby the toothed pivots roll upon the toothed parts
of the supports. By tilting over and emptying the receptacle that side of the
scale beam, wherewith the receptacle is jointed, has been discharged; consequently
the scale descends entirely, whereby also the upper beam returns into its initial
position being connected by the slide piece.
The empty receptacle is heavier at the part below the pivots than at the part
above them; for adjusting which, a weight may serve.
Thus the receptacle when emptied returns into the upright position, whereby its
projection takes along the arm with the upper flap. As the arms bearing the
lower flap have been resting against the arms of the upper flap, the lower flap also
will be opened and arrested by the hook of the bell crank. Consequently the
apparatus is ready again for receiving new material.
The rolling motion of the toothed pivots facilitates the turning of the same.
In order to effect a slow raising and lowering motion of the main scale-beam
three plates rest by their weight upon the beam, they are guided in slits of
different length by a bolt attached to the hopper. As long as the first flap
governing the supply is open, these three plates. help to depress the scale-beam at
the end, where the receptacle is connected therewith; but when this end gets down
successively, the plates on account of the different length of their slits remain one
by one suspended at the bolt; thereby the plates become free from the beam and
discharge it successively.
A lever serves for controlling the scale, by means of which the hooks disengaging
the arresting hook of the receptacle can be arrested in such a manner as not to
come into contact with this latter hook. Consequently the receptacle does not tilt
over, thus the exact weight of the material contained therein may be precisely
.determined Each tilting over motion of the receptacle is registered by a counting
device by means of a lever influenced by the motion of the receptacle.

page_text: I ALFRED GEORGE BROOKES of the firm of Wm Brookes & Son of 55 & 56
Chancery Lane in the County of Middlesex Fellow of the Institute of Patent
Agents, 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 invention relates to improvements in weighing apparatus, which, after
having been filled with a certain charge, stops automatically the further supply of
the material to be weighed and allows the further supply only after the first charge
has been unloaded; and the objects of my improvements are first to cause to open
and close automatically the supply channels; second, to provide means for con-
trolling the weighing mechanisin; third to facilitate the turning of the weighing
receptacle for discharging; and fourth to retain the raising and descending motion
of the scale-beam.
I attain these objects by the mechanism illustrated in the accompanying drawing
in which.
Figure 1 is a side elevation of the apparatus ready for use, and fig. 2 a side,
elevation of the same charged for controlling; fig. 3 is an end view of fig. 1; fig. 4
is a side elevation of the apparatus when discharging the weighed material;
figs. 5. and 6 are details on an enlarged scale.
Similar letters refer to similar parts throughout the several views.
Beneath the outlet of the funnel E are two flaps n and o, of which the upper
one n is provided with a number of slits, which are closed entirely only by the
lower flap o.
When the apparatus is ready for use (fig. 1) the flap n suspended
at the levers n' is kept open by the projection 9 of the weighing receptacle B;.
this projection rests against a counter weight n of the lever n', while the flap o is
arrested by the ratchet pawl 7 of the bell crank l m engaging into the projection o³
of the arm of supporting the flap.
The toothed pivots d of the weighing receptacle B rest in the toothed bearing a
suspended in edges at one end of the scale-beam A. At the other end of the
scale-beam, the inclination of which is indicated by the tongue w, the weight-
scale C is suspended.
The material to be weighed, which runs from the funnel E into the receptacle B
causes the latter to descend when a quantity filling the receptacle nearly balances
the weight in the scale C; thereby the counter-weight n gets free from the
projection ; the lever n¹ drops into the vertical position and closes the flap n.
Now the material to be weighed can run into the receptacle B only in fine streams
or rays through the slits of the flap n.
1
1

page_text: A second scale-beam p, which is placed above the first one A, bears instead of a
tongue or needle a weight D guided by the bowy; one end of the beam p is
provided with an adjusting weight b, while the other end engages by means of a
projection into a elit ¹ of the slide-piece r resting by means of a second slit upon
the pin of the support a. As long as the receptacle B did not descend too far,
the pin supports freely the slide-piece thus not charging the beam ; but as
soon as the receptacle B has travelled down far enough, the slide piece or rail r
charges when descending further the arm of the beam p, wherewith it is fairly
coupled and pulls it down. Thereby the weight D swings over and therewith
the beam p; the projection 8 pushes at the arm m of the crank-lever 7m thus
disengaging the pawl from the flap o, which now entirely closes the outlet of the
funnel E.
The receptacle B, the toothed pivots d of which are arranged in such a manner
as to lay below the centre of gravity of the receptacle when filled, is kept in
upright position by the hook e, which is jointed to one of the supports a and
engages into a projection k of the receptacle. But as soon as the receptacle has
descended so far, that the hook e or a projection fixed thereon touches a hook f
jointed to the shaft F and thus.disengages from the projection k, the receptacle B
tilts over and thereby is emptied, whereby the toothed pivots d roll upon the
toothed parts of the supports a. By tilting over and emptying the receptacle B
that side of the scale beam A, wherewith the receptacle B is jointed, has been
discharged consequently the scale C descends entirely, whereby also the upper
beam p returns into its initial position as being connected by the rail - (ug: ).
The empty receptacle B is heavier at the part below the pivots a than at the
part above them; for adjusting may serve a weight h. Thus the receptacle B
when emptied returns into the upright position, whereby the projection q takes
along the weight n³ and the arm n¹ with the flap n. As the arms o¹ bearing the
flap o have been resting against the arms n¹, the flap o also will be opened and
arrested by the hook of arm l. Consequently the apparatus is ready again for
receiving new material. The rolling motion of the toothed pivots & facilitates
the turning of the same.
In order to effect a slow raising and lowering motion of the scale-beam A three
plates 1, 2, 3, rest by their weight upon a support a, which are guided in slits of
different length by the bolt t attached to the hopper E. As long as the first flap
governing the supply is open, these three plates help to depress the scale-beam
at the end, where the receptacle B is connected therewith; but when this end
gets down successively, the plates 1, 2, 3 on account of the different length of their
slits remain one by one suspended at the bolt t; thereby the plates become free
from the support a and discharge it successively.
A lever g serves for controlling the scale by means of which the hooks f can be
arrested in such a manner as not to come into contact with the hook e (fig. 2).
Consequently the receptacle B does not tilt over, thus the exact weight of the
material contained in the receptacle B may be exactly determined Each tilting
over motion of the receptacle is registered by a counting device by means of the
lever influenced by a pin u attached to B.
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. In weighing apparatus the combination of the receptacle B and the projec-
tion with the flaps n and o, the arms n¹ and o¹ and the weight n², substantially
as and for the purpose specified.
2. In weighing apparatus the combination of the supports a, the slide-piece r
provided with slits and i, the beam p and the pins with the bell crank lm,
projection o³, arms o' and flap o, substantially as set forth.
2

page_text: 3. In weighing apparatus the combination of the lever g and the hook f with
the pivoted receptacle B, the hook e, the scale-beam A and the scale pan C,
substantially as and for the purpose specified.
4. In weighing apparatus the combination of the toothed pivots d of the
receptacle B with the toothed part of the supports a, substantially as and for the
purpose specified.
5. In weighing apparatus the combination of the slotted plates 1, 2, 3 and
the bolt t with the scale-beam A, substantially as and for the purpose specified.
Dated this 10th day of June 1886.
W BROOKES & SON,
Agents for the said Alfred George Brookes,