Improvements in Weighing Machines for Letters and the like.
Year: 1899

page_text: Date of Application, 19th June, 1899-Accepted, 5th May, 1900
COMPLETE SPECIFICATION.
Improvements in Weighing Machines for Letters and the like.
I, KARL LUDWIG KRAUSSE, of 12, Wettinstrasse, Kamenz, in the Kingdom of
Saxony, Bookbinder, 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:-
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This invention relates to a weighing machine with suspended scale the essential
feature thereof being that the heaviness of letters is ascertained by means of a
weight on a beam which weight in its normal position balances the same, whilst
for determining the heaviness of other objects additional ordinary weights are
arranged, the same being laid on the object in the scale and which is to be
weighed.
In order that the deflection of the beam may be determined a graduated scale
is placed on the back part of the weighing machine and over this moves a
pointer situated at the end of the beam.
The invention is illustrated in the accompanying drawing, in which:
Figure 1, is a side view, and
Figure 2, a plan of the machine.
serves
(1) represents a support, the upper end (3) of which is formed as a bearing
for the purpose of receiving the beam (4) of a weighing machine resting on
circular steel points. The beam has two arms, the front short arm
for carrying the scale pan (2) whilst the back and longer arm is marked with
divisions. On this arm is a movable weight (6) which can be placed firmly in
the particular position by means of a binding screw. At the end of the weighing
machine is a pointer (9) which enables the said beam to be deflected and
adjusted.
On the upper end of a vertical rod (7) situated at the back of the weighing
machine is a small plate (8) furnished with a graduated scale over which the said
pointer moves.
The action of the apparatus is as follows:-
:-
If for example a letter is to be weighed it is sufficient to place the machine on
a horizontal surface and adjust the weight accordingly. If the weight of the
letter is heavier the pointer will be deflected upward, but not so when the letter
is lighter, whilst if the weight of the letter corresponds with the adjustment of
the weight the weighing beam assumes its normal horizontal position of rest.
If other objects are to be weighed the weight is pushed forward and placed in
the first division, whereby the weighing beam is balanced, so that it becomes
adjusted and the pointer points to the mil or zero division of the scale (8). Here-
upon the object to be weighed is put into the weighing scale and by the addition
of the necessary weights the weight is brought up to the next highest to the
limit indicated on the beam.
If for example
an object of 17 "weight parts" is to be weighed, according
to the foregoing the sliding weight (6) is placed on the first division of the
beam (4) that is on (0) so that the pointer (9) points to the division (0) of the
scale (8). If now the object to be weighed be laid on the scale pan (2) there will

page_text: or
naturally be a deflection of the beam, which deflection, by moving the sliding
weight (6) is carried to the next highest weight limit, in this particular case
to 20. In order that the thus approximately determined weight of the object
to be weighed may be precisely determined to fractions of." weight-parts
in other words, that the beam (4) which, after the shifting of the sliding
weight (6) is too much deflected may be brought to the next highest weight limit,
in this case to (0) again or beyond (0), ordinary weights are placed in the weighing-
scale. In the present instance, after the addition of a weight of one
66 weight-
part" a weight of two such "weight-parts" results. As the lever or beam (4)
in the above example is adjusted to beyond (0) and the two added weights
weigh 2 or otherwise one "weight-part" the weight of the object is 20 "weight-
parts "3" weight-parts' 17 weight-parts." If an object be heavier than
20weight-parts" the next limit, 50 "weight-parts,” is taken and weights added
to the object until 50 is attained.
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33.
=
For adjusting the machine to a completely horizontal position an adjusting
screw (10) at the bottom of the support is employed and which can be screwed
in, or out, according to requirements.
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:-
A weighing machine for letters and the like the distinguishing feature of
which is that by means of a weight which is movable on the longer arm of a
weighing-beam and in its normal position balances the latter the weight of letters
can be ascertained further weights being arranged for determining the heaviness
of other objects the deflection of the beam being determined and the balance
adjusted by a pointer placed at the end of the weighing-beam and moving over
a scale.
Total 1. 1011
1000
W. D. ROWLINSON,
7, Quality Court, Chancery Lane, London, W.C.,
Agent for the Applicant.