Apes a other Purposes.
Year: 1888

page_text: Date of Application, 1st June, 1888
Specification Accepted, 10th Aug., 1888
Apes a
other Purposes.
I JOHANN ADAM STAHL, of Nurnberg in the Empire of Germany, 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 refers to the construction of a portable ladder with a frame rest
mounted on wheels for the purpose of transport. This portable ladder consists of the
sides L, L, L' L' which are connected at the bottom by the piece L². The shoe I³
serves to keep the lower part weighted for the purpose of balancing the ladder when
being transported.
The lateral parts L L are connected by the cross piece S. The cross piece S is
firmly secured to the axle O by the bolt T.
This arrangement allows the ladder and the axle O to be turned and brought as
required into a more or less vertical position or into a horizontal position for
transport. To the axle O is fixed the arm R fitted at the lower part with the tapped
eye R¹.
A screw U provided with a hand wheel U fits into this eye. The screw U is
secured against shifting, and is situated in the shoe in the lower part of the ladder
where it can turn.
By turning the hand wheel in one or the other direction, the ladder turning on the
bolt T can be shifted.
The ladder is provided with a frame rest of peculiar construction. The frame rest
consists of the two bent side pieces A, A, connected by the cross piece D in which a
fork C turns.
The wheel B is fitted so as to turn in the fork C.
.
The fork C can be turned by the handle E, and thus the wheel B can be made to
assume such a position as is shown by the full and dotted lines in Figure 2, that is,
the ladder can be turned and also pushed backwards and forwards.
In order to fix the ladder in a certain position, use is made of the two male
screws F, on either side of the same, which work in the tapped bosses carried on
Price 6d 1

page_text: the frame F and plant themselves firmly in the ground with their lower splayed
and sharply pointed feet, and thus prevent the ladder from turning further by
itself.
The frame A, A, D, formed by the side pieces A, A turns on two pivots J in the
sides of the ladder LL. These pivots are only visible on Figure 2. In Figure 1
they are concealed by the angular pieces K, K. by which the ladder when raised rests
against the parts A. A.
When the ladder stands up very straight so that the angle a between the sides L
and the plumb line m, n is small, there is danger of the ladder tipping backwards.
This is prevented by the screw bolts W, W, which work in the tapped holes of the
angular pieces K, and are pressed against the frame rest A, A, and thus hold the ladder
firmly.
In order to raise the ladder more or less upright,-that is more or less to the right
(Fig. 2) the angular pieces K, K, which serve as supports, are set higher or lower on
the part of the ladder L. For this purpose the parts K, K are fastened on the
frame G, which is provided with a nut at G¹ and can be moved on the parts. of the
ladder LL by turning the male screw H. The male screw turns in the part Y
fastened to L'. The handle E serves to guide or drive the ladder when set up. When
the ladder is in a horizontal position the frame rest A A lies down at Z on the side of
the shoe Lafter the pins WW have freed the connection between A and L. The
weighted wheel B acts here as a counterpoise to the ladder when lying in a horizontal
position and thus facilitates its-being-raised.-
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 :-
First A portable ladder with the ladder frame capable of turning-on-the-axlo-0-
and swinging in bolts T, the said frame being weighted by the shoe L³, in combination
with the frame rest A, A, which serves as a support when the ladder is erect, and as a
counterpoise when it is being raised, substantially as described and illustrated in the
accompanying drawings.
Second-In a portable ladder the wheel B, capable. of being moved by the
handle E, and secured by male screws on the frame rest A. A. and the simultaneous
arrangement on the latter, of the frame G, which can be shifted by the male screw H,
and whose angular pieces K, K abut on the frame rest A, A, substantially as described
and illustrated in the accompanying drawings.
Dated this 1st day of June 1888. .
POPPLEWELL, COLTON & Co.,
17 & 18, Southampton Buildings, London, W.C.,
Agents for the Applicant.