Improvements in Elevators for Loading and Unloading Goods.
Year: 1895

page_text: Date of Application, 7th Nov., 1895-Accepted, 7th Dec., 1895
Improvements in Elevators for Loading and Unloading Goods.
I, LEONHARD HOPMANN, of Cologne-Etrenfeld in the Empire of Germany,
Manufacturer, 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 :-
My invention relates to elevators for loading and unloading goods. As compared
with other apparatus used for the same purpose the apparatus constructed according
to my said invention possesses advantages of convenient manipulation and simple
construction.
In the accompanying drawings-
Figure 1 is a diagram showing a side elevation of the elevator.
Figure 2 represents a front view of a portion of the chains, a bucket being
tipped over.
Figure 3 is a side view of the arrangement shown in Figure 2.
g
In carrying my invention into practice I provide upon a stationary, portable or
if necessary rotating frame a two arms b and c made of equal length and supported
upon parallel shafts d and e which are placed one above the other. The ends of
the arms and c are connected by joints with parallel hanging legs f, the bolts
and g used for this purpose being at the same distance from each other as the
shafts d and e so that the arms b and c constitute in conjunction with the hanging
legs fa jointed parallelogram which if necessary may be turned about the shafts d
and e the hanging legs being always kept in a vertical position.
To the hanging legs fI fix preferably at 9' draw chains which are guided
round rollers supported on the frame a. These draw chains / may be actuated
by a windlass of any desired construction, so as to move one or the other side of
the parallelogram upwards or downwards.
By way of example I have indicated in Figure 1 by dotted lines a position in
which the hanging leg on the left hand side has been lowered and the hanging leg
on the right hand side has been raised.
At the ends of the arm 6 I support pairs of guide rollers & and, at the lower
ends of the hanging legs f similar pairs of guide rollers and on each side of the
arme is supported a third pair of rollers m. Above these rollers are guided two
parallel endless chains n, connected by bolts J. From the bolts g the buckets are
suspended above their centre of gravity, while sliding collars o' furnished on the
axes o of the rollers are adapted to be fixed by means of adjusting screws or
wedges. On one side of the buckets I provide stops q' which strike against the
collars o'. In this manner the buckets on arriving at the pair of rollers as shown
in Figure 3, are tipped over and emptied. By adjusting the rings o' on the
spindle o I am thus enabled to effect at will the filling or emptying on one or the
other side of the arm. The movement of the chain n is effected by driving
wheels sarranged upon the shafts and e driven by transmitting gear or any
desired motor. In order that the chains shall not be able to leave the driving
rollers in an elevated position of the arms, and that the path of the chain shall
remain practically unchanged, I arrange above the rollers s the counter-rollers t
which hold the chaius iu the driving rollers. In order to compensate for the
unavoidable differences in the length of the path the rollers are supported in
slots. In case the weight of the buckets and chain is not sufficient for the
tension, the bearings of the shaft o are pressed down by means of springs.

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―
1. An elevator in which two pivoted arms b and c are connected by means of
hanging legs to form a parallelogram, the said arms in conjunction with the
hanging legs f carrying the guide rollers k. l. and m for the transporting chain n.
2. An elevator in which the arms adapted to turn about the middle shafts d
and carry supporting rollers at the upper pivots g, the terminal points of the
hanging legs f, and on the side of the pivots g', and driving rollers on the
shafts d and e for the endless chains.
3. An elevator in which sliding rings or similar devices are arranged upon
the shafts o and stops q' upon the buckets p, for the purpose of enabling the filling
or emptying of the buckets to be effected on any desired side according to the
position of the rings o¹.
4. An elevator in which counter rollers t are arranged above the chain driving
rollers s, for the purpose of maintaining the chains n in engagement with the
driving wheels in any position of the arms.
Duted this 7th day of November 1805
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.