AN IMPROVED INDICATOR WEIGHING MACHINE
Year: 1886

page_text: Date of Application, 6th Dec., 1886.
Complete Left, 1st Jan., 1887.
Complete Accepted, 1st Feb., 1887.
We, EDUARD MORGENROTH, RUDOLPH HOLZMÜLLER, and OTTO HOLZMÜLLER, of
Potsdamerstrasse, Berlin, in the German Empire, Merchants do hereby declare the
nature of said invention for "AN IMPROVED INDICATOR WEIGHING MACHINE," to be as
follows:-
This invention has reference to a weighing machine in which the goods to be
weighed act by their weight upon a series of rods and levers, the motion caused
thereby being transferred through a toothed rack and pinion to a pointer which
indicates the weight upon a dial or scale.
The stand or vessel on, or in, which the goods to be weighed are placed is firmly
connected through a vertical rod to a horizontal plate, rivetted at both ends respectively
to a square cross bar, these two square bars being provided with steel bearing points
for bearing upon knife edges, carried by two cross frames one on each side of the
machine. The cross frames consist each of two oppositely placed plates between which
are cross stays, and are further provided with knife edges which may oscillate on cor-
responding bearing points. Those latter are also carried by square bars bolted to the
body of the machine. The distance between the two knife edges of each of the two
sets thereof is precisely alike. To one of the cross stays is suspended vertically a rod
or lever which at its lower end carries a weight box. The weight of this latter serves
for weighing on a small scale, say, up to five Kilogrammes-for greater weights,
additional weight has to be placed in the weight box. The vertical weight rod or
lever is connected through a horizontal link to a vertical lever fixed to the opposite
cross frame so as to cause both of the cross frames to take part in each others move-
ments. Displaceable weights on levers fixed to one of the cross stays serve to balance
the weight of the stand, frames, etcetera. To one of the cross frames is jointed a
toothed rack so as to be capable of oscillating thereon. It engages in a pinion on
the spindle of which is also mounted a pointer for indicating on a dial the weight of
goods in course of being weighed.

page_text: Thus, when the stand is pressed down by a load it carries with it the horizontal
plate and the first two mentioned square bars. By the same pressure the cross frames are
caused to oscillate on one of the two aforesaid sets of Knife edges, the bearing points
of which are supported on the two second mentioned square bars. By this movement
of the cross frames the rack which is jointed to one of them is raised thereby causing
the pinion and with it the pointer to turn on a centre and indicate the weight of
the good.
According as the vertical weight rod or lever is loaded so in proportion will be the
travel of the pointer for indicating a given weight.
CAPITAINE & VON HERTLING,
89, Chancery Lane, London, W.C.,
Agents for the Applicants.
1

page_text: We, EDUARD MORGENROTH, RUDOLPH HOLZMÜLLER and OTTO HOLZMÜLLER of
Potsdamerstrasse, Berlin, in the German Empire, Merchants, do hereby declare the
nature of said invention for "AN IMPROVED INDICATOR WEIGHING MACHINE" and in
what manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
This invention has reference to a double lever weighing machine in which the goods
to be weighed act by their weight upon a series of rods and levers, the motion caused
thereby being transferred through a toothed rack and pinion to a pointer which
indicates the weight upon a dial.
Figs. 1, 2, 3 of the accompanying drawing are respectively a back, a side, and a
front view of the weighing machine of this invention.
The stand or vessel A on or in which the goods to be weighed are placed is firmly
connected to the plate B rivetted at each of its ends to square bars b, b, these latter
being provided with steel bearing parts c, c, for bearing on the knife edges d, d, carried
by two cross frames one on each side of the machine. Each of these cross frames
consist of two oppositely placed plates e, e, and cross stays e¹, e², e³. It is further
pro-
vide with a knife edged plate d¹ which oscillates on the bearing c. The bearings c¹, c¹,
rest on the square bars b', 6', which are firmly screwed to the body of the machine.
The distance apart of the knife edges d, d, is precisely the same as that of the knife
edges d', d. They are bevilled on one side only which adds considerably to the sensi-
tiveness of the machine. To one of the cross stays ea is suspended the lever g which
at its lower end carries a weight box G. The weight of this latter serves for weighing
on a small scale, say up to five Kilogrammes for greater weights an additional
weight G¹ has to be placed in the weight box. The weight lever g is connected with
the lever & suspended to the other cross stay e³ by a rod i which is linked to both
levers so as to compel the one frame to take part in the motion of the othor. The
weights k,, which are displaceable on the levers l, m, fixed to the left hand cross
stay e serve to balance the weight of the stand A frames e, e, etcetera. The movement
of the cross frames and with them of the weight G to the right or left is circumscribed
by the plate B striking against the bars b, b, or the cross stay e¹. To one of the cross
frames, in this case the left hand one-by an arm n is jointed a toothed rack o so as
to be capable of oscillating thereon. It engages a pinion o¹ on the spindle of which is
also mounted a pointer p for indicating on a dial fixed to the body of the machine
the weight of the goods in course of being weighed. Thus, when the stand A is
pressed downwards by a load it carries with it the plate B and this latter the two
bars b, b, vertically downwards (in the direction shown by the arrows). By the same
pressure the cross frames e are caused to oscillate upon the bearing points of the knife
edges d², d³, in the bearings c c. By this movement of the cross frames the rack o is
raised thereby causing the pinion o' and with it the pointer p to turn on a centre.
The extent of this movement of oscillation of the cross frames is in proportion to the
weight on g the resistance of which has to be overcome by them. When on the lever g

page_text: there is only the weight of the box G the pointer p will indicate on the dial C the exact
weight of the goods in course of being weighed, say 190 grammes as shewn in the
drawing. But supposing the weight G to be doubled by the addition of weight G¹,
then the pointer would indicate on the dial only one half the weight of the goods, and
to know the right weight the indicated weight would have to be doubled, which in the
present case would make the weight of the goods 380 grammes.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :
1. In double lever weighing machines with weighing and weight levers the appli-
cation of the weight G or G' to the lever g, substantially as described and shewn.
2. In weighing machines of the kind referred to the adjustable balance weights k³, k²,
to counterbalance the weight of the stand A plate B and cross frames and increase the
divisions of the dial in size towards the end of the same substantially as described and
shewn.
3. The arrangement of the plate B in combination with the cross stays e¹, e', and
the bars 6, 61, in the manner that the movement of the machine upwards when empty
is limited and when loaded the movement of the weight lever 7 is limited substantially
as described and shewn.
4. In a weighing machine of the kind referred to the bevilling of the knife edge
plates on one side only substantially as described and shewn.
CAPITAINE & VON HERTLING,
89, Chancery Lane, London, W.C.,
Agents for the Inventors.