Improvements in the Method of and in Apparatus for Weighing Granulated Sugar and the like.
Year: 1898

page_text: Improvements in the Method of and in Apparatus for Weighing
Granulated Sugar and the like.
I, JOHN JAMES MARSHALL, of 10, Prince Street, New Wortley, Leeds, in the
County of York, do hereby declare the nature of this invention to be as follows:-
I employ a hopper upon a suitable frame for the reception of the sugar or
other material to be weighed, the hopper is preferably funnel shaped, beneath
the hopper is placed the weighing apparatus consisting of a scale pan upon a
balance lever in suitable pivots and with adjusting weights and a fixed weight.
The lower part of the hopper terminates in a round opening, the bags are
placed upon the scale pan which is provided with a support for the empty bags.
When smaller quantities are required to be weighed different weights are
placed upon the scale pan and have attached thereto supports for the bags, the
weights also raise the bags to the required height.
Near the lower opening of the hopper are two horizontal rods one above the
other in suitable bearings, at one end of each of the rods is a spiral spring, the
rods are arranged to slide within their bearings and the springs have a tendency
to push them forwards towards the funnel opening, upon the top rod is an
incline and catch; above the top rod is a catch or projecting bowl, runner, or
roller carried on a pivotted lever, connected to which are vertical rods passing
down under the balance lever (at the weighted end) and terminating in a stirrup
or cross bar near the fixed stop or rest for the balance lever, connected underneath
the stirrup is a balance lever for regulating the tension or drag of the catch
of the pivotted lever on the top rod, the top rod terminates in a funnel opening,
of smaller diameter than the opening proper of the funnel, which when pushed
under the funnel opening decreases its delivery.
The second horizontal sliding rod terminates in a slide or cut off which when
pushed under the funnel opening, closes it, and stops the delivery, this second
sliding rod has an inclined catch near its side, which engages with a pin on
the second rod, this catch is carried by a lever pivotted and having a counter-
balance at its end, and carries a vertical rod passing downwards and terminating
immediately over the balance lever, and is held in position by a suitable guide,
with a regulating screw for adjustment of catch, so as to make it more or less
sensitive.
The action is as follows:-the sugar or other material passes into the funnel
and from thence into the bags placed upon the scale pan, as the sugar nears the
filling of the weight required in the bag, the scale pan lowers, raising its balance
lever, thereby taking the pressure off the pivotted lever, the spring on the top
rod then pushes it forwards under the funnel and decreases the opening and
delivery, then when the proper amount is in the bag the balance lever comes
in contact with the vertical rod connected to the pivotted catch lever, which
raises the catch clear of the pin on the second sliding rod, so releasing it, and
its spring pushes it forwards and closes the opening from the hopper, the rods

page_text: are then pushed back and this is repeated as required. The working parts are
protected by suitable casings or covers.
To prevent and foreign matter or lumps of sugar passing with the granulated
material, a sieve is placed above the hopper through which all the material is
passed.
Dated this lat
1000
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicant.
Improvements in the Method of and in Apparatus for Weighing
Granulated Sugar and the like.
I, JOHN JAMES MARSHALL, of 10, Prince Street, New Wortley, Leeds; in the
County of York, Grocer, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
***
My invention relates to a machine for automatically weighing sugar or. the
like granular substances into parcels of any given weight.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a side-elevation, partly in section, of my improved weighing machine.
Fig. 2 is a cross-section showing detached the mechanism employed for actuating
the delivery cut-off slides.
Fig. 3 is an enlarged front elevation of adjusting or compensating weight.
In constructing the machine I employ a feed hopper A, upon a suitable
frame B, for the reception of the sugar or other material to be weighed. The
said hopper is preferably funnel shaped, and terminates at its lower end in a
circular opening.
Beneath the hopper is placed the weighing apparatus, which consists of a
scale pan Cupon a balance lever or scale beam D in suitable bearings and with
a preferably fixed weight E, fixed stops H and J, and a suitable adjusting eccentric
weight F.
The bags or other receptacles are placed upon the scale pan C, which is pro-
vided with an arm G for supporting them. When smaller parcels are to be
weighed, suitable counterbalance weights are placed upon the scale pan C, the
said weights preferably having supporting arms and serving also to raise the
smaller bags to within a convenient distance of the feed hopper' A.
Near the lower opening of the feed hopper A are two horizontal rods K, L,
working one above the other in suitable slide bearings in a detachable bracket M.
Towards the ends of the said rods K, L, are spiral springs N, N2, -the said springs
having a tendency to push the rods forward towards the hopper outlet. Upon
the upper rod K is a projecting incline or runner P; which engages with a similar
incline or runner R carried by a pivotted lever S having a supporting link S.
The runners P and R are held in contact, so as to resist the action of the
spring N, by means of vertical rods T, T. (see Fig. 2), which bear against the
top of the lever S and pass down under the scale beam D (at its weighted end),
the said rods T, T, terminating in a stirrup U having a fixed guide V near the
fixed stop H.
Connected beneath the stirrup U I may employ a suitable balance lever to
regulate the resistance or drag of the runner R on the upper rod K but in place

page_text: of this I preferably employ the coiled spring W with screw adjustment X, the
said spring being placed over the lever S and having a loop bearing on the end
over the runner R.
The rod K terminates in a tapered or funnel opening A' of smaller diameter
than the hopper outlet, so that when pushed forwards under the hopper it
decreases the delivery from the hopper.
The rod L terminates in a slide or cut-off B¹, which when pushed forwards
under the tapered opening A¹ closes it, and stops the delivery from the hopper A.
Suitable shields C, D, E, are provided to prevent loss of sugar at the hopper
outlet.
The rod L has a pin F1 which engages with an inclined catch G¹ carried by
a pivotted lever H¹ working in a guide H².
Connected to the said lever H is a vertical rod J' which passes downwards
through the upper part of the stirrup U (which acts as a guide for same) and
terminates immediately over the scale beam D. A regulating screw K¹ is pro-
vided for adjusting the catch G¹ so as to make it more or less sensitive.
The adjusting weight F bears against a vertical rod L' on the scale pan C,
and has a hook or finger M¹ which engages with an incline P¹ on the rod L
(see Figs. 1 and 3).
The rods K and L are provided with thumb pieces or knobs N', R¹, the upper
knob N¹ having a catch S¹ which operates the lower knob R¹.
Suitable stops T¹, T, T¹, are provided to limit the movement of the rods K
and L.
The action of the machine is as follows:--
The sugar or other substance to be weighed passes into the hopper A and
from thence into the bags placed upon the scale pan C.
As the sugar in the bag approaches the required weight, the spring N over-
comes the resistance of the runner R, and slightly lifts the lever S and scale
beam D. This releases the runner P and the rod K is shot forward by the
spring N, so reducing the delivery from the hopper A.
When the scale pan C contains the required weight the scale beam D rises,
coming into contact with and lifting the rod J; this releases the pin F¹ and
the rod L is also shot forward, so closing the hopper outlet. At the same time
the incline P on the rod L lifts the eccentric weight F clear of the rod I,
allowing the scale beam D to ride at a balance, and so giving a test as to the
correct weight of each parcel.
The working parts of the machine, which are all attached to the bracket M
and are therefore easily removable, are protected by suitable casings or covers
attached in any suitable manner.
The frame B is preferably supported from the stand or bed U¹ by means of
four pillars V1.
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 a machine for automatically weighing sugar or the like granular sub-
stances the employment, in combination with a scale pan, a suitably weighted
scale beam, and a suitable feed hopper, of sliding spring rods for reducing and
stopping the delivery from such hopper, the said rods being successively actuated
from the scale beam by the means and in the manner substantially as shown and
described.
(2.) In a machine for automatically weighing sugar or the like granular sub-
stances the employment, in combination with a sliding spring rod for stopping
the feed, of an adjusting or compensating weight bearing on the scale pan, the
said weight being so arranged as to be lifted clear of the scale pan on each
forward movement of the said sliding rod, substantially as and for the purposes
shown and described.

page_text: (3.) In a machine for automatically weighing sugar or the like granular sub-
stances, the combination with the detachable bracket M (so as to make the whole
easily removable from the frame and the balance mechanism) of the sliding
rods K, L, tapered opening A', slide B¹, shields C¹, D¹, knobs N¹, R', catch S¹,
stops T, T, T¹, runners P, R, lever S, link S, spring W, regulator X,
springs N, N2, pin. I, catch G', lever H¹, guide H2, regulating screw K¹,
rods T, T, rod Ji, stirrup U, adjusting weight F, finger M, and incline P¹, all
arranged and operated substantially as, and for the purposes, shown and described.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicant.