IMPROVEMENTS IN AUTOMATIC WEIGHING MACHINES FOR WEIGHING GRANULAR AND PULVEROUS SUBSTANCES
Year: 1884

page_text: I CARL REUTHER of Hennef on the Sieg in the German Empire, Manufacturer,
do hereby declare the nature of my invention for IMPROVEMENTS IN AUTOMATIC
WEIGHING MACHINES FOR WEIGHING GRANULAR AND PULVEROUS SUBSTANCES
"
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following stateinent, reference being had to the
accompanying drawings and to the figures and letters marked thereon, that is
to say :-
My invention has reference to automatic weighing apparatus for granular or
pulverous substances for which Letters Patent have been granted to me bearing
date the 16th August 1881 No. 3551, and 3rd April, 1882, No. 1608. In the
construction of apparatus described in the specifications to the said Patents, the
second admission slide G which effects the complete cutting off of the supply of
granular material to the weighing machine is arranged in combination with a
tumbling weight p', and the pressure of both parts together on the scale beam
causes a corresponding cutting off in advance of the supply of material to the
recipient B.
According to the present modification, which is shewn at fig. 1 of the accom-
panying drawings, the tumbling weight pl is separate from the slide G, and is not
in any way in contact therewith, the weighing operation and the closing of the
slide being effected without the aid of this weight. Thus the loading of tho
beam for effecting the cutting off of the supply is only caused by the slide itself.
The tumbling weight resis, during the weighing, against the pin m in such
manner that its centre of gravity is only slightly to the left of its axis. After the
closing of the slide G, so as to cut off the supply, a pin non on the vertical bar H of
the weighing machine comes in contact with the tappet q of the tumbling weight p,
so as to throw the latter to the opposite side, thereby causing it to fall down, and
press the bean downwards on the side of the receptacle, as shewn at the position at
fig. 2, such motion being made to effect the discharge of the receptacle in the
manner described in the before mentioned patents.
In the modification shown at fir. 3, the second slide G is of a different construction,
being arranged to descend vertically in front of the slide F for cutting off the supply

page_text: of material. For this purpose, it rests with knife edges directly upon the scale
beam as shewn, and it is also suspended by links from the end of a balance lever L,
mounted on knife edges or very small pivots, the other end of which carries an
adjustable weight, by means of which the pressure exerted by the slide upon the
scale beam can be accurately adjusted, in a similar manner to that in which the
action of the slide G is regulated by the adjustable weight in my previons patent
No. 1608 of 1882. The lever Land weight V may be omitted in this arrange-
ment as shewn in fig. 4, where the adjustment is effected by adding more or less
weight to the slide, the suspending link of the slide G being in this case provided
with a tray G, at top, into which more or less shot may be introduced for regulating
the downward pressure on the scale beam. In these arrangements, instead of
forming the semicircular notches in the slide F for the issue of the small streams of
the granular substance to be weighed before the supply is entirely cut off by the
slide G, as described in my said former patents, such notches are formed in the
brush surface d. In this case also, a second brush surface d is formed on the edge
of the slide F, against which the slide G closes.
Having thus described the nature of my invention and in what manner the same
is to be performed, I claim in respect of automatic weighing machines of the kind
herein referred to:
First Constructing the second slide G that cuts off the supply of material
separate from the tumbler weight or mechanism that effects the downward motion
of the recipient for discharging its contents, so that the weight of the side alone
effects the cutting off in advance of the supply of material, substantially as herein
described with reference to the accompanying drawings.
:
Second The modified form of the second slide G shewn at figs. 3 and 4, wherein
the slide is arranged vertically and is supported by the scale beam, for effecting the
cutting off of the supply of material in advance.
Third In combination with the slide or equivalent device that effects the
complete cutting off of the supply of material, the use of a balance lever mounted
on knife edges or very small pivois, and having an adjustable weight for regulating
the degree of downward pressure of the slide upon the scale beam.
Fourth The arrangement of balance lever L with adjustable weight V, operating
in combination with the vertical slide G, as and for the purposes herein described
with reference to tig. 3 of the drawings.