Year: 1897

page_text: I JOSEPH ZADE of Köslin in the Kingdom of Prussia, in the German Empire,
Merchant, 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 relates to scaffolds for bricklayers, painters, carpenters and
other artizans, and consists in an improved construction of travelling or transportable
scaffold according to which the scaffold rests upon an underframe forming a waggon
which can be drawn and steered as well as immoveably fixed in position by means.
of hinged supports, and will leave a clear passage underneath the scaffold.
On the accompanying drawings the improved scaffold is represented.
Figure 1 showing a front view and
Figure 2 a side view of the same,
Figure 3 a plan view of the waggon underframe,
Figures 4 to 6 sundry details.
The scaffold rests upon a waggon underframe provided with hind wheels b and fore
wheels c. The latter can turn with the frame d on the bolt e with assistance of the
turntables f and g. The turntable support of the front frame or fore carriage d is by
these means arranged at such a height, that after removal of the longitudinal
draw bar o and the cross beams d¹, room is left underneath the scaffold for a person
to pass under the scaffold between the wheels. This arrangement is very important,
because in many localities there are police regulations requiring the side walks to
remain free for the circulation of foot traffic. This condition is fulfilled by the
improved scaffold.
When the scaffold is transported or carted, it is only put together up to its
first floor or stage while the other parts rest upon the wheeled underframe. By
attaching a horse to the front, the scaffold can be easily transported in this way..
When it has been drawn to a new building or other place of erection,
it is first secured in its position by turning down the hinged supports i which partly
turn on hinges, partly on bolts, in the manner represented by Figures 5 to 5", which
supports rest securely on the ground and fix the underframe of the scaffold
immoveably. Wedges h with clamps are pushed between the cross beams f¹ and g' of
the front frame or fore carriage which prevent the turning of the fore carriage
of the underframe. After the underframe has thus been secured in its position, the
different floors or stages of the scaffold are built up successively as the building
work
progresses or
is to be done at a greater or less height. The
vertical standards are so fixed upon each other that they securely hold the
cross beams or putlogs ¹ between them. The standards / only extend from one floor
or stage to the next and are securely joined together by side plates k².
connections are so arranged that the standards k with side plates 2 and the
staying struts m³ can be shifted in relation to the putlogs k¹, so that the width of
the scaffold can be varied, corresponding to the width of the side walks in
question.
The

page_text: The putlogs are provided with extensions or brackets m which can be turned
upwards on a hinge and serve for supporting planks. Standing on these planks the
workmen if required can approach close to the front of the building and conveniently
carry out their work. Where projections, such as balconies or corners occur in the
building, some of the extensions m can be turned up, and the remaining extensions m
used for putting planks upon. Both sides of the scaffold are made quite symmetrical,
Eo that the scaffold can be used for working on either side of a street without the
necessity of turning the scaffold completely round. The workinen during their
operations usually stand on the planks supported on the putlogs ¹ and are protected
against falling off by the side rails or stretchers l.
As the scaffold can easily be drawn along when the supports i have been turned
into the positions shewn in dotted lines on Figure 1, it is not necessary to make
the scaffold very long, but unless work has to be carried on simultaneously along
the whole front of the building, the scaffold can be shifted along the front as required
and the hooks Fig. 5' then withdrawn from the eyes on the supports and the
latter turned upright again.
When the scaffold is no longer required, it is taken to pieces down to the first
floor or stage and the parts are placed on the wheeled underframe, which after
withdrawal of the clamps h and re-attachment of the pole o and cross beams d¹ can
again be drawn along and steered.
To fix the fore carriage immoveably, the uprights are preferably also connected
to the end standards k by means of side plates ². These side plates of course must
be taken off, when the scaffold is to travel.
The erection and taking down of the scaffold requires only a very short time and
the whole when laid together can also conveniently travel across country.
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
1. The construction of a travelling scaffold with a steerable wheeled underframe
and hinged supports for fixing the underframe with scaffold immoveably in position
substantially as hereinbefore described and illustrated by the drawings.
2. In combination with a travelling scaffold constructed as specified in the preceding
claim, the arrangement of hinged external extensions of the cross beams or putlogs
substantially as and for the purpose described and illustrated by the drawings.
3. In a travelling scaffold provided with a wheeled underframe the arrangement
of a fore carriage or frame turning on a pivot and turntable placed at such a height
that after removal of the draw bar and cross beams of the fore carriage a free
passage for foot passengers is left underneath the scaffold, substantially as herein before
described.
4. In a travelling scaffold provided with a wheeled underframe the symmetrical
arrangement of both sides of the scaffold substantially as and for the purpose
described.
R. J. URQUHART,
57, Barton Arcade, Manchester, and 6, Clayton Square, Liverpool,.
Consulting Engineer and Patent Agent.