Year: 1887

page_text: Date of Application, 13th Sept., 1887
Specification Accepted, 18th Oct., 1887
I, IDA FRANZISKA CLASEN, of No. 37, Muskauerstrasse, Berlin, in the Empire of
Germany, Merchant, 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 a weighing machine in which the object to be weighed
presses down a vertically guided bar connected with the weighing platform; the
movement of the bar is transmitted by toothed or friction gearing to an invariable
weight pivotted at a fixed point and to an index hand working in front of a dial or
scale.
In the accompanying drawing figure 1 represents a vertical section of a weighing
machine of this construction.
The object to be weighed is placed on the platform a connected with the bar b.
This bar is bent at about its middle part towards one side, and is provided with
vertical slots 6 and 6 which work over two pins or rods c and c¹ secured in the case A
enclosing the apparatus. By this means the bar is caused to move up and down in a
straight line. The part of the bar 6 which is bent towards one side is curved so as to
form a kind of toothed sector 63 which engages in a toothed arm d on the invariable
weight d pivotted on the pin do. The curve of the toothed sector 6* of the bar b
and of the toothed arm d are such that, whatever position the bar b may be moved
into, only one tooth of the sector 6* and arm & will be in engagement at one time and
the friction at this point will be consequently reduced to a minimum.
The lower vertical end of the bar b is toothed on its inner side b* and gears with a
toothed wheel e rotating and supported in the case A of the machine and carrying
the index hand e¹ on its arbor. This index hand works in front of the dial or scale
which will indicate the weight of the body placed on the platform a.
Instead of a toothed sector 6' and arm d as hereinbefore described and shewn in
figure 1 I can employ two toothed eccentrics 6 and d as represented in figure 2
which is a vertical section of my weighing machine illustrating this modification;
the toothed eccentrics are arranged to pivot in the case A of the machine, the
toothed eccentric 63 being connected with the platform bar 6 by a link b³.

page_text: Or, as indicated in figure 3, which is a detailed view of part of the mechanism of
the machine, the toothed eccentrics and d in figure 2 can be replaced by sectors 6*
and d having plain surfaces. The sector d is kept continually pressed against the
other sector 63 by means of the weight d² so that the former is obliged to follow the
movement of the latter. The pivotting pins can advantageously be in the form of
knife edges as represented in figure 3.
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. A weighing machine in which the object to be weighed presses down a bar b
connected with the platform a which bar is provided at about its middle part, which
is bent towards one side, with teeth 63 or is connected by a link 66 with a toothed
eccentric or a sector 63 operating in combination with an arm or a toothed eccentric
or a sector having a plain surface pivotted on the pin and carrying the weight d².
2. The improved weighing machine hereinbefore described by reference to the
several figures of the accompanying drawing.
Dated the 13th day of September 1887
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.