Improvements in Automatic Scale Weighing Machines.
Year: 1892

page_text: Date of Application, 5th ec., 1892
Complete Specification Left, 23rd June, 1893—Accepted, 26th Aug., 1893.
PROVISIONAL SPECIFICATION.
Improvements in Automatic Scale Weighing Machines.
I, CHARLES RICHARD GORRINGE 4 Hornsey Rise Gardens London, N.
Gentleman, do hereby declare the nature of my said invention to be as follows:-
The object of this invention is to automatically weigh out predetermined
quantities of substance supplied in bulk from a hopper.
To carry out my invention I provide a hopper for containing the substance to be
weighed, in connection with this hopper is a feeder consisting of a worm with spiral
blades arranged upon a shaft & revolving therewith when motion is communicated
thereto from driving pulley or pulleys, the revolving of this worm or spiral blades pays
out the substance down a schute into a tilting guide & after the substance passes out of
this guide it deposits itself into a tilting scale pan, or the receiving pan of a pair of
scales. This tilting scale pan is prevented from tilting by an electro magnet in the
circuit of a suitable battery and as soon as the substance in the scale pan has over-
come the weight in the other scale pan the tilting scale pan falls, and in doing so
break the electric circuit and hence the magnet ceases to attract the tilting scale
pan, and it tilts and deposits the substance in a suitable receptacle such as a bag.
The action of the tilting scale, shuts off the schute and no further supply of the
substance being weighted, can escape down the schute until the scale pan is again
ready to receive the charge of substance. If desired I may employ revolving pans,
instead of tilting ones.
Dated this 5th day of December 1892.
E. EATON,
Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Automatic Scale Weighing Machines.
I, CHARLES RICHARD GORRINGE 4 Hornsey Rise Gardens London N.
Gentleman, 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 object of this invention is to automatically weigh out predetermined
quantities of substance supplied in bulk from a hopper.
To carry out my invention I provide a hopper for containing the substance to be
weighed; in connection with this hopper, is a feeder consisting of a worm with
spiral blades arranged upon a shaft and revolving therewith when motion is
communicated thereto from a driving pulley or pulleys. The revolution of this
worm and spiral blades pays out the substance down a shute into a tilting guide
and after the substance passes out of this guide it deposits itself into a tilting
scale pan or the receiving pan of a pair of scales. This tilting scale pan is
prevented from tilting by an electro magnet in the circuit of a suitable battery and
as soon as the substance in the scale pan has overcome the weight in the other
scale pan, the tilting scale pan falls and in doing so breaks the electric circuit, and
hence the magnet ceases to attract the tilting scale pan and it tilts and deposits
the substance in a suitable receptacle such as a bag. The action of the tilting
scale pan shuts off the chute and no further supply of the substance being weighed
can escape from the chute, until the scale pan is again ready to receive the charge
of substance.

page_text: In order that- my-invention may be fully understood Fannex drawings to which
I now refer.
Figure 1. is a sectional side elevation of my invention.
Figure 2. is a sectional elevation of a modified arrangement.
0
Referring to Figure 1. a are the outer supports. 6 is the hopper; e is the
shaft carrying the worm or blades d; c is the chute; ftilting pan or guide pivoted
at i to support g and vibrated by cam . j tilting scale pan pivoted at k and
carrying armature m and electro magnet l, s guide directing the weighed substance
into bags. w, scale balance lever carrying adjustable contact piece which makes
and breaks contact in the mercury pot . q is the battery one pole being connected
to the electro magnet 1, by line wire o¹, the other pole being connected to the
mercury pot p, by line wire o. The contact piece is connected to the other
terminal of the magnet by line wire o². r scale weight pan. u pulley for driving
shaft e.
The action is as follows:-
When the substance to be weighed is fed into the scale panj from the hopper b
and tilting pan f, the lever arm w of the scale pan breaks contact_at P, and
consequently the electro magnet l ceases to attract the armature m and thus the
scale pan tilts and deposits the substance down the guide s. The scale afterwards.
comes back to its normal position, being so weighted as to cause it to do so. When
the scale pan tilts, the tilting pan is raised against the chute c and cuts off the
supply of substance from the hopper. The dotted lines indicate the discharging
position of the scale pan j and tilting pan f.
Referring to Figure 2. In this arrangement the scale pan is released owing to
the armature m which carries a catch piece x being attracted by the electro
magnet; the catch piece x being thus released from the loop y attached to the
scale pan j.
In this case the armature m is attracted by the electro magnet lowing
to the electric circuit being completed by the contacts z and 1 by the descent of the
scale panj, when the desired quantity of material has been deposited therein. The
shoot c is telescopic being made in two sections C and C¹. The section C slidės
upon the section C' and has a slot 2. 3 is a flap or shutter attached to a spindle 4
which has bearings on the section C. A collar 5 carrying a rod 6 is secured in a
desired position on the spindle 4 by a set screw 7. This rod 6 is connected to a
lever 8 by means of an elastic band or spring 9. This lever 8 is pivoted at 10 to
a stud or arm 11 attached to the section C. By this arrangement the position of
the section C may be varied without altering the relative position of the lever 8
and arm 12 on the scale pan j. The action is as follows. When the required
amount of substance has been paid into the scale pan j, the same falls and thus
makes electric contact at z and 1, the electro magnet attracts the armature which
thus releases the scale pan ; which in tipping or tilting raises the lever 8 through
the medium of the arm 12 and thus closes the flap or shutter 3 and cuts off the
supply of substance to the scale pan j until the latter returns to its initial position.
The scale pan is so weighted that when the substance has fallen from same the
scale pan returns to its locked position, the loop y passing over the inclined surface
of the catch piece x.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The combined construction and arrangement of the apparatus substantially as
described.
2. In automatic scale weighing machines, in combination, a tilting scale pan
carrying an armature; an electro magnet in connection therewith in the circuit of
a battery, a contact break and make in connection with the balance lever or arin of
the scale, whereby electric contact or circuit is broken upon the descent of the
scale pan and balance lever or arm, by which means the supply from the hopper
is automatically cut off at a desired moment; a hopper provided with a revolving
worm which feeds the material into the scale pan substantially as described.

page_text: 3. In automatic scale weighing machines in combination, a tilting scale pan,
engaging with and controlled by a catch piece, in connection with the armature of
an electro magnet in the circuit of a battery, a contact make and break in connection
with the balance lever or arm of the scale whereby electric contact is made upon
the descent of the scale pan & balance lever or arm; an arm carried by said scale
pan which operates a lever in connection with a flap or shutter and cuts off the
supply of material when the scale panj tilts, said flap or shutter being attached to
a telescopic chute, a hopper provided with a revolving worm which feeds the
material into the scale pan substantially as described.
Dated this 3rd day of June 1893
E. EATON,
Agent for Applicant.