Year: 1888

page_text: I, CARL RÖMER BACHE of Kiborg in the Kingdom of Denmark, Traffic Inspector of
the Government Railways, 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 :-
The characteristics of the waggon weighing machine are as follows:-
1. It is movable, so that it may be placed among the trucks which are to be
weighed.
2. The weighing machine for this purpose may be placed upon a two wheeled vehicle
which can be moved by a man.
3. The weight of the truck to be weighed is ascertained by bringing the weighing
machine first under one and then under the other axle which need only be raised
sufficiently high for the wheels to just not touch the rails.
4. The weighing machine only requires sufficient room for it to be brought under
the axle, so that it can be placed without great difficulty between two trucks coupled
together, and thereupon each may be weighed separately.
5. Each weighing can be performed by a skilful workman in about 3 minutes.
The principle of the truck weighing machine is as follows
←
The load is carried by a ram and the pressure on this is transmitted through a liquid
for example glycerine to a pressure guage when the pair of wheels under the axle of
which the weighing machine is brought, ceases by reason of its being lifted to touch
the rails, the pointer of the pressure gauge shows the weight with which the pair of
wheels are laden, and therefore that of one end of the truck.
In the accompanying drawings a truck weighing machine constructed according to
this invention is shown.
Figure 1 is an elevation, Figure 2 a plan, Figure 3 a vertical section of the
same.
a is the ram, b the hydraulic cylinder containing the ram a, c the pressure gauge.
The ram a forms a nut for the screw d on the upper end of which the beam or cradle e
placed. This beam which can turn on the head of the screw is brought beneath the
[ Price fd7

page_text: axle and then the screw, by means of the lever fand ratchet is screwed up and the
truck lifted so that the weight of the truck is brought to bear on the ram. In Figure 1
the beam is shown in a section taken through its centre.
The pressure guage is adjusted to weigh up to 10,000 kilos. The smallest division
shows 100 kilos and therefore if the pointer stops between two such divisions it is
easily seen whether it is 50, 25 or 75 kilos, so that the the weight of a railway truck
can be ascertained correctly within 50 kilos. As the wheels of the railway truck are
only raised from the rails till it just conses to touch them the weight of the truck may
be ascertained by this method, by first weighing one and then the other end of the
truck. The result of these two weighings, is the gross weight of the truck, even
when the truck load is unequally distributed. on the two pairs of wheels, as
although a theoretical error occurs in lifting the wheels from the rails, in practise
there is none.
Figures 1 and 2 show besides the truck weighing machine itself the carriage on
which it is moved.
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 :-
The wagon weighing apparatus consisting of a ram a, whose top forms a nut for the
screw d, by turning which the load is raised, the ram a working in a cylinder b filled
with liquid, which carries the pressure caused by the lifting of the load to a pressure
guage.