Improvements in Automatic Scale Weighing Machines.
Year: 1893

page_text: Date of Application, 16th Nov., 1893
Complete Specification Left, 3rd Feb., 1894-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Automatic Scale Weighing Machines.
I, ERNEST COLLINS CHARD 33 Margaretta Terrace Oakley Street Chelsea
S.W. Artist, do hereby declare the nature of this invention to be as follows:-
This invention relates to automatic scale weighing machines in which the
substance to be weighed such as tea sugar or the like is fed to the scale from a
hopper & the same is carried out as follows.
The scale pan is divided into two or more compartments & is pivotally carried in
a frame attached to the scale beam or arm. This frame carries a door which upon
the descent of the scale pan closes the feeding aperture in the hopper.
The scale pan is retained in position by a catch piece.
The working is as follows
When the desired amount of substance has entered the scale pan, the same
falls & cuts off the supply from the hopper by means of the sliding door &
the movement of the scale pan releases the catch piece & the weight of the
substance causes the scale pan to rotate & deposit the substance in a shoot, under
which a bag may be placed; an empty compartment thus takes the place of the
previous one the scale pan again rising into position and so on. The bottom of the
compartments are so inclined or shaped as to cause the substance to collect at
the desired part thereof in order to insure the rotation of the scale pan when the
same falls.
Suitable mechanism may be employed to control the speed of rotation of the
scale pan such as a brake if found convenient.
Dated this 16th day of November 1893.
COMPLETE SPECIFICATION.
Improvements in Automatic Scale Weighing Machines.
I, ERNEST COLLINS CHARD 33 Margaretta Terrace Oakley Street Chelsea
S.W. Artist 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:-
This invention relates to automatic scale weighing machines in which the
substance to be weighed such as tea sugar or the like is fed to the scale from a
hopper & the same is carried out as follows, reference being had to the annexed
drawings :-
Figure 1. is a elevation showing my arrangement for weighing out predetermined
quantities of solids such as tea, sugar, coffee and the like,
Figure 2. side elevation of same.
Figure 3 detached view of shutter for closing outlet in hopper.
Figure 4. side elevation of a modified arrangement of cut off.
Figures 5 & 6 further modified arrangement for cutting off the supply from the
hopper.
Referring to Figures 1, 2 and 3, a is the hopper in which the substance, such as
tea for example is contained, and is delivered through aperture i in the tube or
chute to the scale pan c. The scale pan c is carried upon the bent rod d. to

page_text: which it is pivoted at e; this rod d, is attached through the rod or lever, f to the
scale arm g and carries the shutter h, which slides in suitable grooves or the like in
the shoot b, and upon the descent of the scale pan c closes the aperture i in the
shoot b. The scale pan is divided into 2 compartments having the slanting
bottom so that the substance will tend to fall towards & accumulate at the lower
end of same.
When the desired amount of substance corresponding to the weight k, has
entered, the scale pan will descend and close the aperture i. through the
medium of the shutter h, the descent of the scale pan causes the catch piece
to be released from the stop piece m, and the scale pan will now tilt on its
axis e, and deliver the substance into a bag or the like placed under the guide n.
The scale pan e will now rise and the catch piece l, will engage on the stop picce m,
the upward movement of the pan c opening the shoot through the medium of the
shutter h, and so on. Referring to Figure 4. Instead of the sliding shutter h, I
may employ the swinging plate o, pivoted at p, to the hopper a. This swinging
plate o is connected at q, to the lever, which is in turn attached to the rod d, at s,
or other suitable part thereof. When the scale pan c falls or descends the swing
plate o, is swung under the end of the shoot b, and thus cuts off the supply of substance
to the scale pan c and upon the scale pau again rising the swinging plate o. assumes
the position shown by the dotted lines t, any substance which may have collected
thereon being deposited in the scale pan c. This plate o may be of any suitable
shape and have a curvature given thereto if desired. In Figures 5 & 6 the cut off
is performed by the spoon or such shaped piece u, closing the end of the shoot b
which in this case is bevelled as shown at 1, the connection to the scale pan being
similar to that described in Figure 4.
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. The combined construction and arrangement of the various parts substantially
as described and illustrated herein.
2. In automatic scale weighing apparatus or machines, in combination, a bent
arm or frame attached to the scale arm of a scale, a shutter attached to and operated
by said bent arm or frame, said shutter sliding in grooves and closing or opening
au aperture in a chute connected to a hopper containing the substance to be weighed
a scale pan having two or more compartments separated by an inclined partition
and being pivoted to said bent arm, or frame aforesaid; catch pieces on said scale
pan engaging with stop pieces attached to a suitable part of said apparatus; a
guide for receiving the weighed substance and conveying it to a desired receptacle.
Dated this 3rd day of February 1894.
E. EATON,
Agent for Applicant.