Improvements in or connected with Weighing Apparatus.
Year: 1899

page_text: Date of Application, 8th Dec., 1899-Accepted, 20th Jan., 1900
COMPLETE SPECIFICATION.
Improvements in or connected with Weighing Apparatus.
We, WALTHER TIMMERMANN, of 15, Alsterufer, Hamburg, in the Empire of
Germany, Merchant, and HEINRICH DELLSCHAFFT, of 34, Albendrothstrasse, Ham-
burg aforesaid, Office Messenger, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention has reference to apparatus for indicating the weights of
material lifted by lifting gear, as cranes, etcetera, and has for its object to pro-
vide a mechanism which shall be accurate, and which will register in a distinct
and clear manner both the separate weights lifted, and also the sum total of
the weights lifted, whilst, at the same time, the mechanism is simple in con-
struction and cheaply manufactured.
The most convenient position for disposing of the whole mechanism is
within the block or balancing weight to which the hook from which the load is
suspended is attached, so that the mechanism will not interfere with the ordi-
nary working of the lifting gear.
The invention is illustrated in the annexed drawings, in which
Figure 1 shews the indicating mechanism disposed within the block or
balancing weight of a crane or other lifting apparatus.
Figure 2 represents a front view of the indicating mechanism, on an enlarged
scale, and
Figure 3 is the sectional side elevation at a a Figure 2.
Figure 4 is a detail, and-
Figure 5 is a plan of the guide for the grooved spindle shewn in Figure 1.
The apparatus is constructed in the following manner :-
The hook a from which the load is suspended, as an extension reaching into
the weight, carries two columns a supporting a turning plate b. Between
these columns a¹ a spring ² of suitable strength is disposed. This spring will
vary in strength as the maximum weight to be lifted.
In the turning plate b, as shewn in Figure 5, a projection is arranged,
which projection gears into the groove c¹ of the vertical spindle c, so that when
a load is suspended frem the hook a, the projection 61 in moving downwards
slides along the groove c¹, which is arranged in the spindle somewhat like a
screw thread, and thus causes the spindle to be turned.
On the vertical spindle c there is a bevel wheel & gearing into another bevel
wheel d¹ on the indicating appliance proper, so that the turning of the spindle c
also produces the turning of the shaft of the indicating appliance. As will
be seen from Figure 1, the shaft i leads into the space w, in which the indicating
appliance, represented on an enlarged scale in Figures 2, 3, and 4, is disposed.
The entire indicating and registering mechanism may be suitably placed
behind a pane of glass, and the weight lifted easily be read off the dial e.
A short pointer f is firmly attached to the shaft i, and upon the latter turning,
moves round the dial e, and thus accurately indicates the weight lifted.

page_text: In case a greater load is lifted, than the pointer f in moving once round the
dial will indicate, (which in the present case, as shewn by the drawings, would
exceed 200 kilograms) a projection f¹ arranged on the short pointer carries
along with it a second longer pointer g which is loose on the shaft, so that any
weight up to 400 kilograms may be read off the dial.
In case it is required to lift still heavier loads, the indicating of the weight
may be carried out by arranging a third pointer in such a manner that a pro-
jection on the pointer g will carry along the third pointer when the weight
reading 400 kilogrammes has been reached, or further pointers may be used in
the same manner, if required.
In order to obtain the sum total of the weights lifted, a toothed wheel his
disposed loosely on the shaft i, and gearing with a larger toothed wheel k, the
proportions of same, of course, depending upon the size of the dial e.
The large
toothed wheel k is suitably marked with figures by which, as in the case of the
dial e, the weights lifted may be indicated, ¹ being a hole through which the
readings are seen.
The toothed wheel is not permanently in connection with the shaft i, but
only when a load is suspended from the hook a, the movement of being
obtained by means of a ratchet wheel m, gearing with smaller toothed wheel h,
and a pawl firmly attached to the shaft i.
When the load is removed from the hook, the pawl slides over the ratchet
wheel m as the shaft i returns to its former position, the large cog wheel k re-
maining stationary; and when the hook is again loaded, an additional weight
is added to that first indicated by k, and the total weight which has been lifted
may be read off through the hole ¹.
In the case illustrated by the drawings, weights aggregating 1000 kilograms
may be registered by k, so that if no further registration of a total weight of
above 1000 kilogrammes were possible, the figures could be read off only up to
the last mentioned total.
In order that greater weights may be registered than is capable of being indi-
cated by k, a third spindle is arranged below the shaft i, which indicates in the
case illustrated weights above 1000 kilograms.
A toothed wheel n is disposed on a spindle n which in turn is connected
with a pointer. *The toothed wheel n is not turned continuously, but a projec-
tion on the large toothed wheel carries the wheel along with it for some
distance, at every complete revolution of the large wheel, and this distance is
exactly equal to the intervals on the dial p. This latter arrangement, in con-
nection with the previously described indicating appliance, shews the exact
result of the addition of the weights.
The points of the lower dial 2, which is actuated by means of the wheel k, indi-
cates the number of thousands of kilograms lifted, whilst the reading through
hole indicates the fraction which is continually being registered by the indi-
cating mechanism.
Of the pointers f and g, which indicate the weight of each separate "lift"
on the dial e, the hand f, being firmly attached to shaft i, will be caused to
return each time to zero after the hook has been relieved of its load, by means
of the spring 2, and the pointer 9 when released by the projection f¹, that is,
after the hook has been relieved, is also turned back to its zero position, by
means of a spiral spring placed within its casing g¹.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed we declare that what
we claim is:-
1. Weighing apparatus for lifting gear, comprising a pointer, as f, con-
nected with a shaft i, of the indicating mechanism, which pointer after one
revolution carries with it a second pointer, as g, by means of a projection f¹,

page_text: whereby the weights are indicated on the dial e marked with a double scale, a
pawl lever, ratchet wheel m, and toothed wheel h, actuating a toothed wheel k,
provided with a dial, which toothed wheel in each revolution actuates a pointer
attached to a spindle n of the toothed wheel n, whereby the pointer is moved
over the dial p; substantially as and for the purposes set forth.
2. The weighing apparatus particularly as shewn in and described with
reference to the drawings.
Dated this 7th day of December 1800.
WALTHER TIMMERMANN.
HEINRICH DELLSCHAFFT.
By Cheesbrough & Royston,
Agents for the Applicants, 15, Water Street, Liverpool.