Year: 1887

page_text: Date of Application, 23rd June, 1887
Complete Left, 27th Dec., 1837
Complete Accepted, 17th Feb., 1888
We EDUARD STEINFELDT and FERDINAND KOCH of Hannover in the Kingdom of
Prussia, German Empire, Manufacturers, do hereby declare the nature of this invention
to be as follows
The invention concerns that class of balances which are called danish or swedish
balances and which possess two or more scales for marking the upper and underweight
of which the latter is given automatically. Heretofore the scale for the sliding-weight
had to be divided empirically, because the weighing-beam consisted in an irregular
body and the manners of adjusting these scales were very difficult and took much
time and the weighing done with these balances was besides that, not satisfactory in
point of accuracy.
All these deficiencies are avoided in our new balance which is
shown in fig. 1 and 2 in side view resp. in a plan and in which the weighing-beam
consists out of two adjustable parts. a is the frame in which the weighing-beam gh
rests in sockets on the taps c. The weighing-beam carries at d the saucer e and is
connected with the index-finger z, and it consists out of the two parts, g and h, of
which the part g possesses two taps c and d and the adjusting screws p and q. The
latter part serves as a rail for the sliding-weight / having for its better management
two handles, ii, of which the lower one possesses the pawl with the spring f, and
which serves to stop the weight by catching in the toothed lower side of the beam.
The upper weights for the loads to be weighed can be read from the scales on the
sliding-rail at the marking-finger o (see fig. 2) whilst the lower weights are
automatically indicated on the scale s by the index-arm z.
By our improvement it is made possible to give a certain inclination to the straight
on which the centre of gravity of the weight is moving with regard to a straight laid
through the cores c and d of the taps, and consequently the empirical division of the
scale in question is avoided, the intersections ou the scale being all equal. The work
of adjusting the balance will hereafter consist only in the adjustment of the angle a,
as shown in fig. 1 and 4, and the weighing can be done to the desired accuracy.

page_text: To produce the fixed inclination between the two straights already mentioned, the
construction in regard to the adjusting device can undergo many varities as long as
the weighing-beam consists out of two parts, that are hinged together; it may be
regulated by a pin x and screws p and q, as shown in fig. 1 and 2, or by a stationary
position of the core d by screws p and q, or it may be done by the regulation of the 5
tube m, being pivoted at o, by means of the screw p and the respective position of the
core k, as it is the case in those balances in which the rack-back can be shifted.
Dated this 21st day of June 1887.

page_text: We EDUARD STEINFELDT and FERDINAND KOCH of Hannover in the Kingdom of
Prussia, German Empire, Manufacturers, 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:-
Our invention relates to those scales, known as danish or swedish scales or balances,
which are provided with one graduated scale or more on the weighing or scale beam
on which the sliding-weight glides. The graduations on the weighing-beam had
heretofore to be divided in the empirical manner, this being very difficult, inaccurate
and also expensive as it took a comparatively long time.
The object of our invention is to avoid these deficiencies by constructing the
weighing-beam of two parts which are hinged together and which can be adjusted by
screws or in any suitable manner.
The invention is illustrated on the annexed drawings in which fig. 1 is a side-view
of a scale, fig. 2 is a top-view of the same, fig. 3 is the side view of a modification of
the adjusting device, fig. 4 shows another modification; fig. 5 is a modification of the
scales in which the weighing-beam slides and the upper weight is fixed on it and
fig. 6 is a top view of fig. 5.
a is the frame on which the weighing beam gh, carrying the index-finger rests
with the knife edges c in bearings c¹. The two parts gh of the weighing-beam are
connected or hinged together by means of a pin x, the part g being provided with
knife edges c&d. The reason for thus constructing the weighing-beam in two parts
is because the beam does not have a regular shape and therefore the line which is laid
through the centre of gravity of the sliding weight and through the knife edges c & d
is not a straight one but inclines from the fulcrum c towards the fulcrum d and
consequently the graduations on the weighing-beam had to be found by trying or in
the empirical way.
C
All these inconveniences are avoided by the present construction in which the
adjustment of the graduations is executed by means of the screws p & g; i.e. the
distance between line ẞc & ac is adjusted by the last mentioned screws (fig. 1). e is
the saucer for the load to be weighed and is swinging in the knife edge à on the front
part g of the weighing-beam; the index-finger is connected to the end of 9 and
leads to the graduated-plate s. 7 is the sliding-weight being provided with levers i i¹,
to secure an easier moving of the same; the lever i has on the one end a spring fand
its other end is constructed like a pawl & which engages with the teeth of the toothed
under-side of the weighing beam h, as shown in fig. 1 & 3.
In the construction shown in fig. 1 & 2 the adjusting screws p & q are arranged
opposite each other and knife edge d is firmly connected with the weighing-beam.
In fig. 3 the tap d is connected with a separate lever, which has its fulcrum in r¹ and
the screws p & are arranged in a horizontal line at the under part of the lever, only

page_text: screw p being for adjusting purposes. Fig. 4 shows a similar arrangement in which
the screws are screwed from above into the lever and on to g.
In some kinds of scales the weight is fixed on the lever and is represented in fig. 5.
In this construction the weighing-beam h rests on a knife edge which is fixed to the
front part g of the weighing-beam, and the weighing-beam is adjusted only by
screw p pressing on tube m, through which the heamh glides.
Each of the aforesaid scales will be provided with regularly divided graduations on
their weighing-beam h, the adjustment of the graduations will only consist in the
adjustment of the adjusting screws. By these means a scale is obtained which will
work more accurately then any scale heretofore known.
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 scales with a sliding weight on their weighing-beam, said weighing-beam
being constructed out of two parts hinged together, the application of an adjusting
device for lifting and lowering the beam in order to get a regular division of the
graduations on the weighing-beam as also to give the beam a certain inclination
towards the straight line going through the knife edges as hereinbefore described.
2) In scales described in claim 1 the application of the adjusting device, shown in
fig. 5 & 6 for the purpose as above.
3) In scales with a moveable weighing beam and a fixed weight at the end of the
same the construction of the beam out of two parts, which are hinged together in
combination with the adjusting device shown in fig. 5 and 6 for the purpose as above.
Dated this 23rd day of December 1887.
EDUARD STEINFELDT.
FERDINAND KOCH.
By A. Kuhnt & R. Deissier,
38, Alexander Str. Berlin,
Germany.