Year: 1888

page_text: I, OTTO FLEISCHHAUER, Architect, in care of Ulr. R. Maerz of 67 Leipzigerstrasse,
Berlin, S. W. in the Empire of Germany, do hereby declare the nature of this
invention, to be as follows:-
This invention relates to that class of scales or weighing machines in which a
weighted arm is raised by the load until the moments of the weighted arm and of the
load equalize one another. The weight of load corresponding thereto being indicated
on a dial.
The accompanying drawing shows the improved weighing machine. h is the arm
having the weight g thereon and pivoted by its knife edge p on a stationary bearing.
The arm carries also the knife edge r supporting a bearing fixed to the frames to
which the weighing pan is attached, the said frame being provided also with the
bearing supported by a knife 7' on the frame m-The frame m is supported by knife
edge p. The bearings at rp r'plare so arranged as to form a parallelogram of
which the side rp or pl preferably forms an angle of about 20° to the horizon
when the scale pan is not loaded. By such arrangement of the bearings the scale pan
is always vertically sustained and the machine is rendered very sensitive for small
loads, while also able to weigh heavy loads. The rack u connected to an extension of
the arm meshes with the pinion t on the shaft of the indicator whereby the weight
is shown on the dial on the face of the machine.
Dated this 16th day of March 1888.
HERBERT & Co.,
18, Buckingham Street, W.C.,
Agents for Applicant.

page_text: Improvements in Weighing Machines.
1 OTTO FLEISCHIAUER architect in care of U. R. Maerz of 67 Leipzigerstrasse,
Berlin in the Empire of Germany, 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 that class of scales or weighing machines in which a
weighted arm is raised by the load until the moments of the weighted arm and of the
load equalize one another, the weight of load corresponding thereto being indicated on
a dial.
The drawing filed with my provisional specification shows the improved weighing
machine, is the arm having the weight g thereon and pivoted by its knife edge > on
a stationary bearing.
The arm carries also the knife edge supporting a bearing fixed to the frame s
to which the weighing pan is attached, the said frame being provided also with the
bearing supported by a knife on the frame m. The frame m is supported by knife
edge p. The bearings at ppl are so arranged as to form a parallelogram of
which the side por pl preferably forms an angle of about 20° to the horizon
when the scale pan is not loaded. By such arrangement of the bearings the scale
pan is always vertically sustained and the machine is rendered very sensitive for small
loads while also able to weigh heavy loads.
The rack connected to an extension of the arm meshes with the pinion on the
shaft of the indicator whereby the weight is shown on the dial or face of the
machine. It is important that the load placed on the basin be so distributed on
the suspended shafts and that the pressure produced on the shaft is always
directed towards the bearing in this shaft in the parallel piece m., thus pressing the
bearings and knife edges against each other so that the bearings and edges are kept
together by the force.
?"
For this purpose the centre of gravity of the charge must always be lodged
laterally from the suspended shaft in the direction towards the shaft p, the basin v
must therefore be correspondingly arranged on its support s.
For the knife edges pr and p the double bearings are provided, one on each side
of the central plane a in plan Fig. 2.
On the knife edge there is but one bearing and of course situated in the plane xx
the basin is therefore supported by only three points and therefore to be always
securely supported.
The cross bearers consisting of narrow bars of steel with sharpened edges are so
inclined that the pressure of the bearings on them falls with maximum load into the
line of the thickest cross section of the bearers.

page_text: 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.
In weighing machinery.
1. The combination of the weighted arm the parts carrying the scale pan, the
frame m and four bearings forming a parallelogram for connecting and supporting
said parts substantially in the manner set forth.
2. The arrangement of the bearing p at a higher level than the bearing and so
that the plane in which said bearings lie forms an angle of 20° or thereabouts to the
horizon when the scale is not loaded for the purpose set forth.
3. In a machine comprising the combination described in claim 1, the construction
of the knife edges i of flat steel bars arranged to receive the greatest load in the line
of their greatest thickness as illustrated and described.